codemirror.js
7923 lines
| 1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others |
| 2 | // Distributed under an MIT license: http://codemirror.net/LICENSE |
| 3 | |
| 4 | // This is CodeMirror (http://codemirror.net), a code editor |
| 5 | // implemented in JavaScript on top of the browser's DOM. |
| 6 | // |
| 7 | // You can find some technical background for some of the code below |
| 8 | // at http://marijnhaverbeke.nl/blog/#cm-internals . |
| 9 | |
| 10 | (function(mod) { |
| 11 | if (typeof exports == "object" && typeof module == "object") // CommonJS |
| 12 | module.exports = mod(); |
| 13 | else if (typeof define == "function" && define.amd) // AMD |
| 14 | return define([], mod); |
| 15 | else // Plain browser env |
| 16 | this.CodeMirror = mod(); |
| 17 | })(function() { |
| 18 | "use strict"; |
| 19 | |
| 20 | // BROWSER SNIFFING |
| 21 | |
| 22 | // Kludges for bugs and behavior differences that can't be feature |
| 23 | // detected are enabled based on userAgent etc sniffing. |
| 24 | |
| 25 | var gecko = /gecko\/\d/i.test(navigator.userAgent); |
| 26 | // ie_uptoN means Internet Explorer version N or lower |
| 27 | var ie_upto10 = /MSIE \d/.test(navigator.userAgent); |
| 28 | var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(navigator.userAgent); |
| 29 | var ie = ie_upto10 || ie_11up; |
| 30 | var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1]); |
| 31 | var webkit = /WebKit\//.test(navigator.userAgent); |
| 32 | var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); |
| 33 | var chrome = /Chrome\//.test(navigator.userAgent); |
| 34 | var presto = /Opera\//.test(navigator.userAgent); |
| 35 | var safari = /Apple Computer/.test(navigator.vendor); |
| 36 | var khtml = /KHTML\//.test(navigator.userAgent); |
| 37 | var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent); |
| 38 | var phantom = /PhantomJS/.test(navigator.userAgent); |
| 39 | |
| 40 | var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); |
| 41 | // This is woefully incomplete. Suggestions for alternative methods welcome. |
| 42 | var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent); |
| 43 | var mac = ios || /Mac/.test(navigator.platform); |
| 44 | var windows = /win/i.test(navigator.platform); |
| 45 | |
| 46 | var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/); |
| 47 | if (presto_version) presto_version = Number(presto_version[1]); |
| 48 | if (presto_version && presto_version >= 15) { presto = false; webkit = true; } |
| 49 | // Some browsers use the wrong event properties to signal cmd/ctrl on OS X |
| 50 | var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11)); |
| 51 | var captureRightClick = gecko || (ie && ie_version >= 9); |
| 52 | |
| 53 | // Optimize some code when these features are not used. |
| 54 | var sawReadOnlySpans = false, sawCollapsedSpans = false; |
| 55 | |
| 56 | // EDITOR CONSTRUCTOR |
| 57 | |
| 58 | // A CodeMirror instance represents an editor. This is the object |
| 59 | // that user code is usually dealing with. |
| 60 | |
| 61 | function CodeMirror(place, options) { |
| 62 | if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); |
| 63 | |
| 64 | this.options = options = options ? copyObj(options) : {}; |
| 65 | // Determine effective options based on given values and defaults. |
| 66 | copyObj(defaults, options, false); |
| 67 | setGuttersForLineNumbers(options); |
| 68 | |
| 69 | var doc = options.value; |
| 70 | if (typeof doc == "string") doc = new Doc(doc, options.mode); |
| 71 | this.doc = doc; |
| 72 | |
| 73 | var display = this.display = new Display(place, doc); |
| 74 | display.wrapper.CodeMirror = this; |
| 75 | updateGutters(this); |
| 76 | themeChanged(this); |
| 77 | if (options.lineWrapping) |
| 78 | this.display.wrapper.className += " CodeMirror-wrap"; |
| 79 | if (options.autofocus && !mobile) focusInput(this); |
| 80 | |
| 81 | this.state = { |
| 82 | keyMaps: [], // stores maps added by addKeyMap |
| 83 | overlays: [], // highlighting overlays, as added by addOverlay |
| 84 | modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info |
| 85 | overwrite: false, focused: false, |
| 86 | suppressEdits: false, // used to disable editing during key handlers when in readOnly mode |
| 87 | pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput |
| 88 | draggingText: false, |
| 89 | highlight: new Delayed(), // stores highlight worker timeout |
| 90 | keySeq: null // Unfinished key sequence |
| 91 | }; |
| 92 | |
| 93 | // Override magic textarea content restore that IE sometimes does |
| 94 | // on our hidden textarea on reload |
| 95 | if (ie && ie_version < 11) setTimeout(bind(resetInput, this, true), 20); |
| 96 | |
| 97 | registerEventHandlers(this); |
| 98 | ensureGlobalHandlers(); |
| 99 | |
| 100 | startOperation(this); |
| 101 | this.curOp.forceUpdate = true; |
| 102 | attachDoc(this, doc); |
| 103 | |
| 104 | if ((options.autofocus && !mobile) || activeElt() == display.input) |
| 105 | setTimeout(bind(onFocus, this), 20); |
| 106 | else |
| 107 | onBlur(this); |
| 108 | |
| 109 | for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt)) |
| 110 | optionHandlers[opt](this, options[opt], Init); |
| 111 | maybeUpdateLineNumberWidth(this); |
| 112 | for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); |
| 113 | endOperation(this); |
| 114 | } |
| 115 | |
| 116 | // DISPLAY CONSTRUCTOR |
| 117 | |
| 118 | // The display handles the DOM integration, both for input reading |
| 119 | // and content drawing. It holds references to DOM nodes and |
| 120 | // display-related state. |
| 121 | |
| 122 | function Display(place, doc) { |
| 123 | var d = this; |
| 124 | |
| 125 | // The semihidden textarea that is focused when the editor is |
| 126 | // focused, and receives input. |
| 127 | var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none"); |
| 128 | // The textarea is kept positioned near the cursor to prevent the |
| 129 | // fact that it'll be scrolled into view on input from scrolling |
| 130 | // our fake cursor out of view. On webkit, when wrap=off, paste is |
| 131 | // very slow. So make the area wide instead. |
| 132 | if (webkit) input.style.width = "1000px"; |
| 133 | else input.setAttribute("wrap", "off"); |
| 134 | // If border: 0; -- iOS fails to open keyboard (issue #1287) |
| 135 | if (ios) input.style.border = "1px solid black"; |
| 136 | input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false"); |
| 137 | |
| 138 | // Wraps and hides input textarea |
| 139 | d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); |
| 140 | // The fake scrollbar elements. |
| 141 | d.scrollbarH = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar"); |
| 142 | d.scrollbarV = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar"); |
| 143 | // Covers bottom-right square when both scrollbars are present. |
| 144 | d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); |
| 145 | // Covers bottom of gutter when coverGutterNextToScrollbar is on |
| 146 | // and h scrollbar is present. |
| 147 | d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); |
| 148 | // Will contain the actual code, positioned to cover the viewport. |
| 149 | d.lineDiv = elt("div", null, "CodeMirror-code"); |
| 150 | // Elements are added to these to represent selection and cursors. |
| 151 | d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); |
| 152 | d.cursorDiv = elt("div", null, "CodeMirror-cursors"); |
| 153 | // A visibility: hidden element used to find the size of things. |
| 154 | d.measure = elt("div", null, "CodeMirror-measure"); |
| 155 | // When lines outside of the viewport are measured, they are drawn in this. |
| 156 | d.lineMeasure = elt("div", null, "CodeMirror-measure"); |
| 157 | // Wraps everything that needs to exist inside the vertically-padded coordinate system |
| 158 | d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], |
| 159 | null, "position: relative; outline: none"); |
| 160 | // Moved around its parent to cover visible view. |
| 161 | d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); |
| 162 | // Set to the height of the document, allowing scrolling. |
| 163 | d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); |
| 164 | // Behavior of elts with overflow: auto and padding is |
| 165 | // inconsistent across browsers. This is used to ensure the |
| 166 | // scrollable area is big enough. |
| 167 | d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;"); |
| 168 | // Will contain the gutters, if any. |
| 169 | d.gutters = elt("div", null, "CodeMirror-gutters"); |
| 170 | d.lineGutter = null; |
| 171 | // Actual scrollable element. |
| 172 | d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); |
| 173 | d.scroller.setAttribute("tabIndex", "-1"); |
| 174 | // The element in which the editor lives. |
| 175 | d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV, |
| 176 | d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); |
| 177 | |
| 178 | // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) |
| 179 | if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } |
| 180 | // Needed to hide big blue blinking cursor on Mobile Safari |
| 181 | if (ios) input.style.width = "0px"; |
| 182 | if (!webkit) d.scroller.draggable = true; |
| 183 | // Needed to handle Tab key in KHTML |
| 184 | if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; } |
| 185 | // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). |
| 186 | if (ie && ie_version < 8) d.scrollbarH.style.minHeight = d.scrollbarV.style.minWidth = "18px"; |
| 187 | |
| 188 | if (place) { |
| 189 | if (place.appendChild) place.appendChild(d.wrapper); |
| 190 | else place(d.wrapper); |
| 191 | } |
| 192 | |
| 193 | // Current rendered range (may be bigger than the view window). |
| 194 | d.viewFrom = d.viewTo = doc.first; |
| 195 | // Information about the rendered lines. |
| 196 | d.view = []; |
| 197 | // Holds info about a single rendered line when it was rendered |
| 198 | // for measurement, while not in view. |
| 199 | d.externalMeasured = null; |
| 200 | // Empty space (in pixels) above the view |
| 201 | d.viewOffset = 0; |
| 202 | d.lastWrapHeight = d.lastWrapWidth = 0; |
| 203 | d.updateLineNumbers = null; |
| 204 | |
| 205 | // Used to only resize the line number gutter when necessary (when |
| 206 | // the amount of lines crosses a boundary that makes its width change) |
| 207 | d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; |
| 208 | // See readInput and resetInput |
| 209 | d.prevInput = ""; |
| 210 | // Set to true when a non-horizontal-scrolling line widget is |
| 211 | // added. As an optimization, line widget aligning is skipped when |
| 212 | // this is false. |
| 213 | d.alignWidgets = false; |
| 214 | // Flag that indicates whether we expect input to appear real soon |
| 215 | // now (after some event like 'keypress' or 'input') and are |
| 216 | // polling intensively. |
| 217 | d.pollingFast = false; |
| 218 | // Self-resetting timeout for the poller |
| 219 | d.poll = new Delayed(); |
| 220 | |
| 221 | d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; |
| 222 | |
| 223 | // Tracks when resetInput has punted to just putting a short |
| 224 | // string into the textarea instead of the full selection. |
| 225 | d.inaccurateSelection = false; |
| 226 | |
| 227 | // Tracks the maximum line length so that the horizontal scrollbar |
| 228 | // can be kept static when scrolling. |
| 229 | d.maxLine = null; |
| 230 | d.maxLineLength = 0; |
| 231 | d.maxLineChanged = false; |
| 232 | |
| 233 | // Used for measuring wheel scrolling granularity |
| 234 | d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; |
| 235 | |
| 236 | // True when shift is held down. |
| 237 | d.shift = false; |
| 238 | |
| 239 | // Used to track whether anything happened since the context menu |
| 240 | // was opened. |
| 241 | d.selForContextMenu = null; |
| 242 | } |
| 243 | |
| 244 | // STATE UPDATES |
| 245 | |
| 246 | // Used to get the editor into a consistent state again when options change. |
| 247 | |
| 248 | function loadMode(cm) { |
| 249 | cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption); |
| 250 | resetModeState(cm); |
| 251 | } |
| 252 | |
| 253 | function resetModeState(cm) { |
| 254 | cm.doc.iter(function(line) { |
| 255 | if (line.stateAfter) line.stateAfter = null; |
| 256 | if (line.styles) line.styles = null; |
| 257 | }); |
| 258 | cm.doc.frontier = cm.doc.first; |
| 259 | startWorker(cm, 100); |
| 260 | cm.state.modeGen++; |
| 261 | if (cm.curOp) regChange(cm); |
| 262 | } |
| 263 | |
| 264 | function wrappingChanged(cm) { |
| 265 | if (cm.options.lineWrapping) { |
| 266 | addClass(cm.display.wrapper, "CodeMirror-wrap"); |
| 267 | cm.display.sizer.style.minWidth = ""; |
| 268 | } else { |
| 269 | rmClass(cm.display.wrapper, "CodeMirror-wrap"); |
| 270 | findMaxLine(cm); |
| 271 | } |
| 272 | estimateLineHeights(cm); |
| 273 | regChange(cm); |
| 274 | clearCaches(cm); |
| 275 | setTimeout(function(){updateScrollbars(cm);}, 100); |
| 276 | } |
| 277 | |
| 278 | // Returns a function that estimates the height of a line, to use as |
| 279 | // first approximation until the line becomes visible (and is thus |
| 280 | // properly measurable). |
| 281 | function estimateHeight(cm) { |
| 282 | var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; |
| 283 | var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); |
| 284 | return function(line) { |
| 285 | if (lineIsHidden(cm.doc, line)) return 0; |
| 286 | |
| 287 | var widgetsHeight = 0; |
| 288 | if (line.widgets) for (var i = 0; i < line.widgets.length; i++) { |
| 289 | if (line.widgets[i].height) widgetsHeight += line.widgets[i].height; |
| 290 | } |
| 291 | |
| 292 | if (wrapping) |
| 293 | return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th; |
| 294 | else |
| 295 | return widgetsHeight + th; |
| 296 | }; |
| 297 | } |
| 298 | |
| 299 | function estimateLineHeights(cm) { |
| 300 | var doc = cm.doc, est = estimateHeight(cm); |
| 301 | doc.iter(function(line) { |
| 302 | var estHeight = est(line); |
| 303 | if (estHeight != line.height) updateLineHeight(line, estHeight); |
| 304 | }); |
| 305 | } |
| 306 | |
| 307 | function themeChanged(cm) { |
| 308 | cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + |
| 309 | cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); |
| 310 | clearCaches(cm); |
| 311 | } |
| 312 | |
| 313 | function guttersChanged(cm) { |
| 314 | updateGutters(cm); |
| 315 | regChange(cm); |
| 316 | setTimeout(function(){alignHorizontally(cm);}, 20); |
| 317 | } |
| 318 | |
| 319 | // Rebuild the gutter elements, ensure the margin to the left of the |
| 320 | // code matches their width. |
| 321 | function updateGutters(cm) { |
| 322 | var gutters = cm.display.gutters, specs = cm.options.gutters; |
| 323 | removeChildren(gutters); |
| 324 | for (var i = 0; i < specs.length; ++i) { |
| 325 | var gutterClass = specs[i]; |
| 326 | var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); |
| 327 | if (gutterClass == "CodeMirror-linenumbers") { |
| 328 | cm.display.lineGutter = gElt; |
| 329 | gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; |
| 330 | } |
| 331 | } |
| 332 | gutters.style.display = i ? "" : "none"; |
| 333 | updateGutterSpace(cm); |
| 334 | } |
| 335 | |
| 336 | function updateGutterSpace(cm) { |
| 337 | var width = cm.display.gutters.offsetWidth; |
| 338 | cm.display.sizer.style.marginLeft = width + "px"; |
| 339 | cm.display.scrollbarH.style.left = cm.options.fixedGutter ? width + "px" : 0; |
| 340 | } |
| 341 | |
| 342 | // Compute the character length of a line, taking into account |
| 343 | // collapsed ranges (see markText) that might hide parts, and join |
| 344 | // other lines onto it. |
| 345 | function lineLength(line) { |
| 346 | if (line.height == 0) return 0; |
| 347 | var len = line.text.length, merged, cur = line; |
| 348 | while (merged = collapsedSpanAtStart(cur)) { |
| 349 | var found = merged.find(0, true); |
| 350 | cur = found.from.line; |
| 351 | len += found.from.ch - found.to.ch; |
| 352 | } |
| 353 | cur = line; |
| 354 | while (merged = collapsedSpanAtEnd(cur)) { |
| 355 | var found = merged.find(0, true); |
| 356 | len -= cur.text.length - found.from.ch; |
| 357 | cur = found.to.line; |
| 358 | len += cur.text.length - found.to.ch; |
| 359 | } |
| 360 | return len; |
| 361 | } |
| 362 | |
| 363 | // Find the longest line in the document. |
| 364 | function findMaxLine(cm) { |
| 365 | var d = cm.display, doc = cm.doc; |
| 366 | d.maxLine = getLine(doc, doc.first); |
| 367 | d.maxLineLength = lineLength(d.maxLine); |
| 368 | d.maxLineChanged = true; |
| 369 | doc.iter(function(line) { |
| 370 | var len = lineLength(line); |
| 371 | if (len > d.maxLineLength) { |
| 372 | d.maxLineLength = len; |
| 373 | d.maxLine = line; |
| 374 | } |
| 375 | }); |
| 376 | } |
| 377 | |
| 378 | // Make sure the gutters options contains the element |
| 379 | // "CodeMirror-linenumbers" when the lineNumbers option is true. |
| 380 | function setGuttersForLineNumbers(options) { |
| 381 | var found = indexOf(options.gutters, "CodeMirror-linenumbers"); |
| 382 | if (found == -1 && options.lineNumbers) { |
| 383 | options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]); |
| 384 | } else if (found > -1 && !options.lineNumbers) { |
| 385 | options.gutters = options.gutters.slice(0); |
| 386 | options.gutters.splice(found, 1); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | // SCROLLBARS |
| 391 | |
| 392 | function hScrollbarTakesSpace(cm) { |
| 393 | return cm.display.scroller.clientHeight - cm.display.wrapper.clientHeight < scrollerCutOff - 3; |
| 394 | } |
| 395 | |
| 396 | // Prepare DOM reads needed to update the scrollbars. Done in one |
| 397 | // shot to minimize update/measure roundtrips. |
| 398 | function measureForScrollbars(cm) { |
| 399 | var scroll = cm.display.scroller; |
| 400 | return { |
| 401 | clientHeight: scroll.clientHeight, |
| 402 | barHeight: cm.display.scrollbarV.clientHeight, |
| 403 | scrollWidth: scroll.scrollWidth, clientWidth: scroll.clientWidth, |
| 404 | hScrollbarTakesSpace: hScrollbarTakesSpace(cm), |
| 405 | barWidth: cm.display.scrollbarH.clientWidth, |
| 406 | docHeight: Math.round(cm.doc.height + paddingVert(cm.display)) |
| 407 | }; |
| 408 | } |
| 409 | |
| 410 | // Re-synchronize the fake scrollbars with the actual size of the |
| 411 | // content. |
| 412 | function updateScrollbars(cm, measure) { |
| 413 | if (!measure) measure = measureForScrollbars(cm); |
| 414 | var d = cm.display, sWidth = scrollbarWidth(d.measure); |
| 415 | var scrollHeight = measure.docHeight + scrollerCutOff; |
| 416 | var needsH = measure.scrollWidth > measure.clientWidth; |
| 417 | if (needsH && measure.scrollWidth <= measure.clientWidth + 1 && |
| 418 | sWidth > 0 && !measure.hScrollbarTakesSpace) |
| 419 | needsH = false; // (Issue #2562) |
| 420 | var needsV = scrollHeight > measure.clientHeight; |
| 421 | |
| 422 | if (needsV) { |
| 423 | d.scrollbarV.style.display = "block"; |
| 424 | d.scrollbarV.style.bottom = needsH ? sWidth + "px" : "0"; |
| 425 | // A bug in IE8 can cause this value to be negative, so guard it. |
| 426 | d.scrollbarV.firstChild.style.height = |
| 427 | Math.max(0, scrollHeight - measure.clientHeight + (measure.barHeight || d.scrollbarV.clientHeight)) + "px"; |
| 428 | } else { |
| 429 | d.scrollbarV.style.display = ""; |
| 430 | d.scrollbarV.firstChild.style.height = "0"; |
| 431 | } |
| 432 | if (needsH) { |
| 433 | d.scrollbarH.style.display = "block"; |
| 434 | d.scrollbarH.style.right = needsV ? sWidth + "px" : "0"; |
| 435 | d.scrollbarH.firstChild.style.width = |
| 436 | (measure.scrollWidth - measure.clientWidth + (measure.barWidth || d.scrollbarH.clientWidth)) + "px"; |
| 437 | } else { |
| 438 | d.scrollbarH.style.display = ""; |
| 439 | d.scrollbarH.firstChild.style.width = "0"; |
| 440 | } |
| 441 | if (needsH && needsV) { |
| 442 | d.scrollbarFiller.style.display = "block"; |
| 443 | d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = sWidth + "px"; |
| 444 | } else d.scrollbarFiller.style.display = ""; |
| 445 | if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { |
| 446 | d.gutterFiller.style.display = "block"; |
| 447 | d.gutterFiller.style.height = sWidth + "px"; |
| 448 | d.gutterFiller.style.width = d.gutters.offsetWidth + "px"; |
| 449 | } else d.gutterFiller.style.display = ""; |
| 450 | |
| 451 | if (!cm.state.checkedOverlayScrollbar && measure.clientHeight > 0) { |
| 452 | if (sWidth === 0) { |
| 453 | var w = mac && !mac_geMountainLion ? "12px" : "18px"; |
| 454 | d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = w; |
| 455 | var barMouseDown = function(e) { |
| 456 | if (e_target(e) != d.scrollbarV && e_target(e) != d.scrollbarH) |
| 457 | operation(cm, onMouseDown)(e); |
| 458 | }; |
| 459 | on(d.scrollbarV, "mousedown", barMouseDown); |
| 460 | on(d.scrollbarH, "mousedown", barMouseDown); |
| 461 | } |
| 462 | cm.state.checkedOverlayScrollbar = true; |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | // Compute the lines that are visible in a given viewport (defaults |
| 467 | // the the current scroll position). viewport may contain top, |
| 468 | // height, and ensure (see op.scrollToPos) properties. |
| 469 | function visibleLines(display, doc, viewport) { |
| 470 | var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop; |
| 471 | top = Math.floor(top - paddingTop(display)); |
| 472 | var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight; |
| 473 | |
| 474 | var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom); |
| 475 | // Ensure is a {from: {line, ch}, to: {line, ch}} object, and |
| 476 | // forces those lines into the viewport (if possible). |
| 477 | if (viewport && viewport.ensure) { |
| 478 | var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line; |
| 479 | if (ensureFrom < from) |
| 480 | return {from: ensureFrom, |
| 481 | to: lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight)}; |
| 482 | if (Math.min(ensureTo, doc.lastLine()) >= to) |
| 483 | return {from: lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight), |
| 484 | to: ensureTo}; |
| 485 | } |
| 486 | return {from: from, to: Math.max(to, from + 1)}; |
| 487 | } |
| 488 | |
| 489 | // LINE NUMBERS |
| 490 | |
| 491 | // Re-align line numbers and gutter marks to compensate for |
| 492 | // horizontal scrolling. |
| 493 | function alignHorizontally(cm) { |
| 494 | var display = cm.display, view = display.view; |
| 495 | if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return; |
| 496 | var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft; |
| 497 | var gutterW = display.gutters.offsetWidth, left = comp + "px"; |
| 498 | for (var i = 0; i < view.length; i++) if (!view[i].hidden) { |
| 499 | if (cm.options.fixedGutter && view[i].gutter) |
| 500 | view[i].gutter.style.left = left; |
| 501 | var align = view[i].alignable; |
| 502 | if (align) for (var j = 0; j < align.length; j++) |
| 503 | align[j].style.left = left; |
| 504 | } |
| 505 | if (cm.options.fixedGutter) |
| 506 | display.gutters.style.left = (comp + gutterW) + "px"; |
| 507 | } |
| 508 | |
| 509 | // Used to ensure that the line number gutter is still the right |
| 510 | // size for the current document size. Returns true when an update |
| 511 | // is needed. |
| 512 | function maybeUpdateLineNumberWidth(cm) { |
| 513 | if (!cm.options.lineNumbers) return false; |
| 514 | var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display; |
| 515 | if (last.length != display.lineNumChars) { |
| 516 | var test = display.measure.appendChild(elt("div", [elt("div", last)], |
| 517 | "CodeMirror-linenumber CodeMirror-gutter-elt")); |
| 518 | var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; |
| 519 | display.lineGutter.style.width = ""; |
| 520 | display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding); |
| 521 | display.lineNumWidth = display.lineNumInnerWidth + padding; |
| 522 | display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; |
| 523 | display.lineGutter.style.width = display.lineNumWidth + "px"; |
| 524 | updateGutterSpace(cm); |
| 525 | return true; |
| 526 | } |
| 527 | return false; |
| 528 | } |
| 529 | |
| 530 | function lineNumberFor(options, i) { |
| 531 | return String(options.lineNumberFormatter(i + options.firstLineNumber)); |
| 532 | } |
| 533 | |
| 534 | // Computes display.scroller.scrollLeft + display.gutters.offsetWidth, |
| 535 | // but using getBoundingClientRect to get a sub-pixel-accurate |
| 536 | // result. |
| 537 | function compensateForHScroll(display) { |
| 538 | return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left; |
| 539 | } |
| 540 | |
| 541 | // DISPLAY DRAWING |
| 542 | |
| 543 | function DisplayUpdate(cm, viewport, force) { |
| 544 | var display = cm.display; |
| 545 | |
| 546 | this.viewport = viewport; |
| 547 | // Store some values that we'll need later (but don't want to force a relayout for) |
| 548 | this.visible = visibleLines(display, cm.doc, viewport); |
| 549 | this.editorIsHidden = !display.wrapper.offsetWidth; |
| 550 | this.wrapperHeight = display.wrapper.clientHeight; |
| 551 | this.wrapperWidth = display.wrapper.clientWidth; |
| 552 | this.oldViewFrom = display.viewFrom; this.oldViewTo = display.viewTo; |
| 553 | this.oldScrollerWidth = display.scroller.clientWidth; |
| 554 | this.force = force; |
| 555 | this.dims = getDimensions(cm); |
| 556 | } |
| 557 | |
| 558 | // Does the actual updating of the line display. Bails out |
| 559 | // (returning false) when there is nothing to be done and forced is |
| 560 | // false. |
| 561 | function updateDisplayIfNeeded(cm, update) { |
| 562 | var display = cm.display, doc = cm.doc; |
| 563 | if (update.editorIsHidden) { |
| 564 | resetView(cm); |
| 565 | return false; |
| 566 | } |
| 567 | |
| 568 | // Bail out if the visible area is already rendered and nothing changed. |
| 569 | if (!update.force && |
| 570 | update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo && |
| 571 | (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) && |
| 572 | countDirtyView(cm) == 0) |
| 573 | return false; |
| 574 | |
| 575 | if (maybeUpdateLineNumberWidth(cm)) { |
| 576 | resetView(cm); |
| 577 | update.dims = getDimensions(cm); |
| 578 | } |
| 579 | |
| 580 | // Compute a suitable new viewport (from & to) |
| 581 | var end = doc.first + doc.size; |
| 582 | var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first); |
| 583 | var to = Math.min(end, update.visible.to + cm.options.viewportMargin); |
| 584 | if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom); |
| 585 | if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo); |
| 586 | if (sawCollapsedSpans) { |
| 587 | from = visualLineNo(cm.doc, from); |
| 588 | to = visualLineEndNo(cm.doc, to); |
| 589 | } |
| 590 | |
| 591 | var different = from != display.viewFrom || to != display.viewTo || |
| 592 | display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth; |
| 593 | adjustView(cm, from, to); |
| 594 | |
| 595 | display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom)); |
| 596 | // Position the mover div to align with the current scroll position |
| 597 | cm.display.mover.style.top = display.viewOffset + "px"; |
| 598 | |
| 599 | var toUpdate = countDirtyView(cm); |
| 600 | if (!different && toUpdate == 0 && !update.force && |
| 601 | (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo)) |
| 602 | return false; |
| 603 | |
| 604 | // For big changes, we hide the enclosing element during the |
| 605 | // update, since that speeds up the operations on most browsers. |
| 606 | var focused = activeElt(); |
| 607 | if (toUpdate > 4) display.lineDiv.style.display = "none"; |
| 608 | patchDisplay(cm, display.updateLineNumbers, update.dims); |
| 609 | if (toUpdate > 4) display.lineDiv.style.display = ""; |
| 610 | // There might have been a widget with a focused element that got |
| 611 | // hidden or updated, if so re-focus it. |
| 612 | if (focused && activeElt() != focused && focused.offsetHeight) focused.focus(); |
| 613 | |
| 614 | // Prevent selection and cursors from interfering with the scroll |
| 615 | // width. |
| 616 | removeChildren(display.cursorDiv); |
| 617 | removeChildren(display.selectionDiv); |
| 618 | |
| 619 | if (different) { |
| 620 | display.lastWrapHeight = update.wrapperHeight; |
| 621 | display.lastWrapWidth = update.wrapperWidth; |
| 622 | startWorker(cm, 400); |
| 623 | } |
| 624 | |
| 625 | display.updateLineNumbers = null; |
| 626 | |
| 627 | return true; |
| 628 | } |
| 629 | |
| 630 | function postUpdateDisplay(cm, update) { |
| 631 | var force = update.force, viewport = update.viewport; |
| 632 | for (var first = true;; first = false) { |
| 633 | if (first && cm.options.lineWrapping && update.oldScrollerWidth != cm.display.scroller.clientWidth) { |
| 634 | force = true; |
| 635 | } else { |
| 636 | force = false; |
| 637 | // Clip forced viewport to actual scrollable area. |
| 638 | if (viewport && viewport.top != null) |
| 639 | viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - scrollerCutOff - |
| 640 | cm.display.scroller.clientHeight, viewport.top)}; |
| 641 | // Updated line heights might result in the drawn area not |
| 642 | // actually covering the viewport. Keep looping until it does. |
| 643 | update.visible = visibleLines(cm.display, cm.doc, viewport); |
| 644 | if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) |
| 645 | break; |
| 646 | } |
| 647 | if (!updateDisplayIfNeeded(cm, update)) break; |
| 648 | updateHeightsInViewport(cm); |
| 649 | var barMeasure = measureForScrollbars(cm); |
| 650 | updateSelection(cm); |
| 651 | setDocumentHeight(cm, barMeasure); |
| 652 | updateScrollbars(cm, barMeasure); |
| 653 | } |
| 654 | |
| 655 | signalLater(cm, "update", cm); |
| 656 | if (cm.display.viewFrom != update.oldViewFrom || cm.display.viewTo != update.oldViewTo) |
| 657 | signalLater(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo); |
| 658 | } |
| 659 | |
| 660 | function updateDisplaySimple(cm, viewport) { |
| 661 | var update = new DisplayUpdate(cm, viewport); |
| 662 | if (updateDisplayIfNeeded(cm, update)) { |
| 663 | updateHeightsInViewport(cm); |
| 664 | postUpdateDisplay(cm, update); |
| 665 | var barMeasure = measureForScrollbars(cm); |
| 666 | updateSelection(cm); |
| 667 | setDocumentHeight(cm, barMeasure); |
| 668 | updateScrollbars(cm, barMeasure); |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | function setDocumentHeight(cm, measure) { |
| 673 | cm.display.sizer.style.minHeight = cm.display.heightForcer.style.top = measure.docHeight + "px"; |
| 674 | cm.display.gutters.style.height = Math.max(measure.docHeight, measure.clientHeight - scrollerCutOff) + "px"; |
| 675 | } |
| 676 | |
| 677 | function checkForWebkitWidthBug(cm, measure) { |
| 678 | // Work around Webkit bug where it sometimes reserves space for a |
| 679 | // non-existing phantom scrollbar in the scroller (Issue #2420) |
| 680 | if (cm.display.sizer.offsetWidth + cm.display.gutters.offsetWidth < cm.display.scroller.clientWidth - 1) { |
| 681 | cm.display.sizer.style.minHeight = cm.display.heightForcer.style.top = "0px"; |
| 682 | cm.display.gutters.style.height = measure.docHeight + "px"; |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | // Read the actual heights of the rendered lines, and update their |
| 687 | // stored heights to match. |
| 688 | function updateHeightsInViewport(cm) { |
| 689 | var display = cm.display; |
| 690 | var prevBottom = display.lineDiv.offsetTop; |
| 691 | for (var i = 0; i < display.view.length; i++) { |
| 692 | var cur = display.view[i], height; |
| 693 | if (cur.hidden) continue; |
| 694 | if (ie && ie_version < 8) { |
| 695 | var bot = cur.node.offsetTop + cur.node.offsetHeight; |
| 696 | height = bot - prevBottom; |
| 697 | prevBottom = bot; |
| 698 | } else { |
| 699 | var box = cur.node.getBoundingClientRect(); |
| 700 | height = box.bottom - box.top; |
| 701 | } |
| 702 | var diff = cur.line.height - height; |
| 703 | if (height < 2) height = textHeight(display); |
| 704 | if (diff > .001 || diff < -.001) { |
| 705 | updateLineHeight(cur.line, height); |
| 706 | updateWidgetHeight(cur.line); |
| 707 | if (cur.rest) for (var j = 0; j < cur.rest.length; j++) |
| 708 | updateWidgetHeight(cur.rest[j]); |
| 709 | } |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | // Read and store the height of line widgets associated with the |
| 714 | // given line. |
| 715 | function updateWidgetHeight(line) { |
| 716 | if (line.widgets) for (var i = 0; i < line.widgets.length; ++i) |
| 717 | line.widgets[i].height = line.widgets[i].node.offsetHeight; |
| 718 | } |
| 719 | |
| 720 | // Do a bulk-read of the DOM positions and sizes needed to draw the |
| 721 | // view, so that we don't interleave reading and writing to the DOM. |
| 722 | function getDimensions(cm) { |
| 723 | var d = cm.display, left = {}, width = {}; |
| 724 | var gutterLeft = d.gutters.clientLeft; |
| 725 | for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { |
| 726 | left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft; |
| 727 | width[cm.options.gutters[i]] = n.clientWidth; |
| 728 | } |
| 729 | return {fixedPos: compensateForHScroll(d), |
| 730 | gutterTotalWidth: d.gutters.offsetWidth, |
| 731 | gutterLeft: left, |
| 732 | gutterWidth: width, |
| 733 | wrapperWidth: d.wrapper.clientWidth}; |
| 734 | } |
| 735 | |
| 736 | // Sync the actual display DOM structure with display.view, removing |
| 737 | // nodes for lines that are no longer in view, and creating the ones |
| 738 | // that are not there yet, and updating the ones that are out of |
| 739 | // date. |
| 740 | function patchDisplay(cm, updateNumbersFrom, dims) { |
| 741 | var display = cm.display, lineNumbers = cm.options.lineNumbers; |
| 742 | var container = display.lineDiv, cur = container.firstChild; |
| 743 | |
| 744 | function rm(node) { |
| 745 | var next = node.nextSibling; |
| 746 | // Works around a throw-scroll bug in OS X Webkit |
| 747 | if (webkit && mac && cm.display.currentWheelTarget == node) |
| 748 | node.style.display = "none"; |
| 749 | else |
| 750 | node.parentNode.removeChild(node); |
| 751 | return next; |
| 752 | } |
| 753 | |
| 754 | var view = display.view, lineN = display.viewFrom; |
| 755 | // Loop over the elements in the view, syncing cur (the DOM nodes |
| 756 | // in display.lineDiv) with the view as we go. |
| 757 | for (var i = 0; i < view.length; i++) { |
| 758 | var lineView = view[i]; |
| 759 | if (lineView.hidden) { |
| 760 | } else if (!lineView.node) { // Not drawn yet |
| 761 | var node = buildLineElement(cm, lineView, lineN, dims); |
| 762 | container.insertBefore(node, cur); |
| 763 | } else { // Already drawn |
| 764 | while (cur != lineView.node) cur = rm(cur); |
| 765 | var updateNumber = lineNumbers && updateNumbersFrom != null && |
| 766 | updateNumbersFrom <= lineN && lineView.lineNumber; |
| 767 | if (lineView.changes) { |
| 768 | if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false; |
| 769 | updateLineForChanges(cm, lineView, lineN, dims); |
| 770 | } |
| 771 | if (updateNumber) { |
| 772 | removeChildren(lineView.lineNumber); |
| 773 | lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN))); |
| 774 | } |
| 775 | cur = lineView.node.nextSibling; |
| 776 | } |
| 777 | lineN += lineView.size; |
| 778 | } |
| 779 | while (cur) cur = rm(cur); |
| 780 | } |
| 781 | |
| 782 | // When an aspect of a line changes, a string is added to |
| 783 | // lineView.changes. This updates the relevant part of the line's |
| 784 | // DOM structure. |
| 785 | function updateLineForChanges(cm, lineView, lineN, dims) { |
| 786 | for (var j = 0; j < lineView.changes.length; j++) { |
| 787 | var type = lineView.changes[j]; |
| 788 | if (type == "text") updateLineText(cm, lineView); |
| 789 | else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims); |
| 790 | else if (type == "class") updateLineClasses(lineView); |
| 791 | else if (type == "widget") updateLineWidgets(lineView, dims); |
| 792 | } |
| 793 | lineView.changes = null; |
| 794 | } |
| 795 | |
| 796 | // Lines with gutter elements, widgets or a background class need to |
| 797 | // be wrapped, and have the extra elements added to the wrapper div |
| 798 | function ensureLineWrapped(lineView) { |
| 799 | if (lineView.node == lineView.text) { |
| 800 | lineView.node = elt("div", null, null, "position: relative"); |
| 801 | if (lineView.text.parentNode) |
| 802 | lineView.text.parentNode.replaceChild(lineView.node, lineView.text); |
| 803 | lineView.node.appendChild(lineView.text); |
| 804 | if (ie && ie_version < 8) lineView.node.style.zIndex = 2; |
| 805 | } |
| 806 | return lineView.node; |
| 807 | } |
| 808 | |
| 809 | function updateLineBackground(lineView) { |
| 810 | var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass; |
| 811 | if (cls) cls += " CodeMirror-linebackground"; |
| 812 | if (lineView.background) { |
| 813 | if (cls) lineView.background.className = cls; |
| 814 | else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; } |
| 815 | } else if (cls) { |
| 816 | var wrap = ensureLineWrapped(lineView); |
| 817 | lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild); |
| 818 | } |
| 819 | } |
| 820 | |
| 821 | // Wrapper around buildLineContent which will reuse the structure |
| 822 | // in display.externalMeasured when possible. |
| 823 | function getLineContent(cm, lineView) { |
| 824 | var ext = cm.display.externalMeasured; |
| 825 | if (ext && ext.line == lineView.line) { |
| 826 | cm.display.externalMeasured = null; |
| 827 | lineView.measure = ext.measure; |
| 828 | return ext.built; |
| 829 | } |
| 830 | return buildLineContent(cm, lineView); |
| 831 | } |
| 832 | |
| 833 | // Redraw the line's text. Interacts with the background and text |
| 834 | // classes because the mode may output tokens that influence these |
| 835 | // classes. |
| 836 | function updateLineText(cm, lineView) { |
| 837 | var cls = lineView.text.className; |
| 838 | var built = getLineContent(cm, lineView); |
| 839 | if (lineView.text == lineView.node) lineView.node = built.pre; |
| 840 | lineView.text.parentNode.replaceChild(built.pre, lineView.text); |
| 841 | lineView.text = built.pre; |
| 842 | if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) { |
| 843 | lineView.bgClass = built.bgClass; |
| 844 | lineView.textClass = built.textClass; |
| 845 | updateLineClasses(lineView); |
| 846 | } else if (cls) { |
| 847 | lineView.text.className = cls; |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | function updateLineClasses(lineView) { |
| 852 | updateLineBackground(lineView); |
| 853 | if (lineView.line.wrapClass) |
| 854 | ensureLineWrapped(lineView).className = lineView.line.wrapClass; |
| 855 | else if (lineView.node != lineView.text) |
| 856 | lineView.node.className = ""; |
| 857 | var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass; |
| 858 | lineView.text.className = textClass || ""; |
| 859 | } |
| 860 | |
| 861 | function updateLineGutter(cm, lineView, lineN, dims) { |
| 862 | if (lineView.gutter) { |
| 863 | lineView.node.removeChild(lineView.gutter); |
| 864 | lineView.gutter = null; |
| 865 | } |
| 866 | var markers = lineView.line.gutterMarkers; |
| 867 | if (cm.options.lineNumbers || markers) { |
| 868 | var wrap = ensureLineWrapped(lineView); |
| 869 | var gutterWrap = lineView.gutter = |
| 870 | wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "left: " + |
| 871 | (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + |
| 872 | "px; width: " + dims.gutterTotalWidth + "px"), |
| 873 | lineView.text); |
| 874 | if (lineView.line.gutterClass) |
| 875 | gutterWrap.className += " " + lineView.line.gutterClass; |
| 876 | if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) |
| 877 | lineView.lineNumber = gutterWrap.appendChild( |
| 878 | elt("div", lineNumberFor(cm.options, lineN), |
| 879 | "CodeMirror-linenumber CodeMirror-gutter-elt", |
| 880 | "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " |
| 881 | + cm.display.lineNumInnerWidth + "px")); |
| 882 | if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) { |
| 883 | var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]; |
| 884 | if (found) |
| 885 | gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " + |
| 886 | dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px")); |
| 887 | } |
| 888 | } |
| 889 | } |
| 890 | |
| 891 | function updateLineWidgets(lineView, dims) { |
| 892 | if (lineView.alignable) lineView.alignable = null; |
| 893 | for (var node = lineView.node.firstChild, next; node; node = next) { |
| 894 | var next = node.nextSibling; |
| 895 | if (node.className == "CodeMirror-linewidget") |
| 896 | lineView.node.removeChild(node); |
| 897 | } |
| 898 | insertLineWidgets(lineView, dims); |
| 899 | } |
| 900 | |
| 901 | // Build a line's DOM representation from scratch |
| 902 | function buildLineElement(cm, lineView, lineN, dims) { |
| 903 | var built = getLineContent(cm, lineView); |
| 904 | lineView.text = lineView.node = built.pre; |
| 905 | if (built.bgClass) lineView.bgClass = built.bgClass; |
| 906 | if (built.textClass) lineView.textClass = built.textClass; |
| 907 | |
| 908 | updateLineClasses(lineView); |
| 909 | updateLineGutter(cm, lineView, lineN, dims); |
| 910 | insertLineWidgets(lineView, dims); |
| 911 | return lineView.node; |
| 912 | } |
| 913 | |
| 914 | // A lineView may contain multiple logical lines (when merged by |
| 915 | // collapsed spans). The widgets for all of them need to be drawn. |
| 916 | function insertLineWidgets(lineView, dims) { |
| 917 | insertLineWidgetsFor(lineView.line, lineView, dims, true); |
| 918 | if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++) |
| 919 | insertLineWidgetsFor(lineView.rest[i], lineView, dims, false); |
| 920 | } |
| 921 | |
| 922 | function insertLineWidgetsFor(line, lineView, dims, allowAbove) { |
| 923 | if (!line.widgets) return; |
| 924 | var wrap = ensureLineWrapped(lineView); |
| 925 | for (var i = 0, ws = line.widgets; i < ws.length; ++i) { |
| 926 | var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); |
| 927 | if (!widget.handleMouseEvents) node.ignoreEvents = true; |
| 928 | positionLineWidget(widget, node, lineView, dims); |
| 929 | if (allowAbove && widget.above) |
| 930 | wrap.insertBefore(node, lineView.gutter || lineView.text); |
| 931 | else |
| 932 | wrap.appendChild(node); |
| 933 | signalLater(widget, "redraw"); |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | function positionLineWidget(widget, node, lineView, dims) { |
| 938 | if (widget.noHScroll) { |
| 939 | (lineView.alignable || (lineView.alignable = [])).push(node); |
| 940 | var width = dims.wrapperWidth; |
| 941 | node.style.left = dims.fixedPos + "px"; |
| 942 | if (!widget.coverGutter) { |
| 943 | width -= dims.gutterTotalWidth; |
| 944 | node.style.paddingLeft = dims.gutterTotalWidth + "px"; |
| 945 | } |
| 946 | node.style.width = width + "px"; |
| 947 | } |
| 948 | if (widget.coverGutter) { |
| 949 | node.style.zIndex = 5; |
| 950 | node.style.position = "relative"; |
| 951 | if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px"; |
| 952 | } |
| 953 | } |
| 954 | |
| 955 | // POSITION OBJECT |
| 956 | |
| 957 | // A Pos instance represents a position within the text. |
| 958 | var Pos = CodeMirror.Pos = function(line, ch) { |
| 959 | if (!(this instanceof Pos)) return new Pos(line, ch); |
| 960 | this.line = line; this.ch = ch; |
| 961 | }; |
| 962 | |
| 963 | // Compare two positions, return 0 if they are the same, a negative |
| 964 | // number when a is less, and a positive number otherwise. |
| 965 | var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; }; |
| 966 | |
| 967 | function copyPos(x) {return Pos(x.line, x.ch);} |
| 968 | function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; } |
| 969 | function minPos(a, b) { return cmp(a, b) < 0 ? a : b; } |
| 970 | |
| 971 | // SELECTION / CURSOR |
| 972 | |
| 973 | // Selection objects are immutable. A new one is created every time |
| 974 | // the selection changes. A selection is one or more non-overlapping |
| 975 | // (and non-touching) ranges, sorted, and an integer that indicates |
| 976 | // which one is the primary selection (the one that's scrolled into |
| 977 | // view, that getCursor returns, etc). |
| 978 | function Selection(ranges, primIndex) { |
| 979 | this.ranges = ranges; |
| 980 | this.primIndex = primIndex; |
| 981 | } |
| 982 | |
| 983 | Selection.prototype = { |
| 984 | primary: function() { return this.ranges[this.primIndex]; }, |
| 985 | equals: function(other) { |
| 986 | if (other == this) return true; |
| 987 | if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false; |
| 988 | for (var i = 0; i < this.ranges.length; i++) { |
| 989 | var here = this.ranges[i], there = other.ranges[i]; |
| 990 | if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false; |
| 991 | } |
| 992 | return true; |
| 993 | }, |
| 994 | deepCopy: function() { |
| 995 | for (var out = [], i = 0; i < this.ranges.length; i++) |
| 996 | out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head)); |
| 997 | return new Selection(out, this.primIndex); |
| 998 | }, |
| 999 | somethingSelected: function() { |
| 1000 | for (var i = 0; i < this.ranges.length; i++) |
| 1001 | if (!this.ranges[i].empty()) return true; |
| 1002 | return false; |
| 1003 | }, |
| 1004 | contains: function(pos, end) { |
| 1005 | if (!end) end = pos; |
| 1006 | for (var i = 0; i < this.ranges.length; i++) { |
| 1007 | var range = this.ranges[i]; |
| 1008 | if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) |
| 1009 | return i; |
| 1010 | } |
| 1011 | return -1; |
| 1012 | } |
| 1013 | }; |
| 1014 | |
| 1015 | function Range(anchor, head) { |
| 1016 | this.anchor = anchor; this.head = head; |
| 1017 | } |
| 1018 | |
| 1019 | Range.prototype = { |
| 1020 | from: function() { return minPos(this.anchor, this.head); }, |
| 1021 | to: function() { return maxPos(this.anchor, this.head); }, |
| 1022 | empty: function() { |
| 1023 | return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch; |
| 1024 | } |
| 1025 | }; |
| 1026 | |
| 1027 | // Take an unsorted, potentially overlapping set of ranges, and |
| 1028 | // build a selection out of it. 'Consumes' ranges array (modifying |
| 1029 | // it). |
| 1030 | function normalizeSelection(ranges, primIndex) { |
| 1031 | var prim = ranges[primIndex]; |
| 1032 | ranges.sort(function(a, b) { return cmp(a.from(), b.from()); }); |
| 1033 | primIndex = indexOf(ranges, prim); |
| 1034 | for (var i = 1; i < ranges.length; i++) { |
| 1035 | var cur = ranges[i], prev = ranges[i - 1]; |
| 1036 | if (cmp(prev.to(), cur.from()) >= 0) { |
| 1037 | var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to()); |
| 1038 | var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head; |
| 1039 | if (i <= primIndex) --primIndex; |
| 1040 | ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to)); |
| 1041 | } |
| 1042 | } |
| 1043 | return new Selection(ranges, primIndex); |
| 1044 | } |
| 1045 | |
| 1046 | function simpleSelection(anchor, head) { |
| 1047 | return new Selection([new Range(anchor, head || anchor)], 0); |
| 1048 | } |
| 1049 | |
| 1050 | // Most of the external API clips given positions to make sure they |
| 1051 | // actually exist within the document. |
| 1052 | function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));} |
| 1053 | function clipPos(doc, pos) { |
| 1054 | if (pos.line < doc.first) return Pos(doc.first, 0); |
| 1055 | var last = doc.first + doc.size - 1; |
| 1056 | if (pos.line > last) return Pos(last, getLine(doc, last).text.length); |
| 1057 | return clipToLen(pos, getLine(doc, pos.line).text.length); |
| 1058 | } |
| 1059 | function clipToLen(pos, linelen) { |
| 1060 | var ch = pos.ch; |
| 1061 | if (ch == null || ch > linelen) return Pos(pos.line, linelen); |
| 1062 | else if (ch < 0) return Pos(pos.line, 0); |
| 1063 | else return pos; |
| 1064 | } |
| 1065 | function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;} |
| 1066 | function clipPosArray(doc, array) { |
| 1067 | for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]); |
| 1068 | return out; |
| 1069 | } |
| 1070 | |
| 1071 | // SELECTION UPDATES |
| 1072 | |
| 1073 | // The 'scroll' parameter given to many of these indicated whether |
| 1074 | // the new cursor position should be scrolled into view after |
| 1075 | // modifying the selection. |
| 1076 | |
| 1077 | // If shift is held or the extend flag is set, extends a range to |
| 1078 | // include a given position (and optionally a second position). |
| 1079 | // Otherwise, simply returns the range between the given positions. |
| 1080 | // Used for cursor motion and such. |
| 1081 | function extendRange(doc, range, head, other) { |
| 1082 | if (doc.cm && doc.cm.display.shift || doc.extend) { |
| 1083 | var anchor = range.anchor; |
| 1084 | if (other) { |
| 1085 | var posBefore = cmp(head, anchor) < 0; |
| 1086 | if (posBefore != (cmp(other, anchor) < 0)) { |
| 1087 | anchor = head; |
| 1088 | head = other; |
| 1089 | } else if (posBefore != (cmp(head, other) < 0)) { |
| 1090 | head = other; |
| 1091 | } |
| 1092 | } |
| 1093 | return new Range(anchor, head); |
| 1094 | } else { |
| 1095 | return new Range(other || head, head); |
| 1096 | } |
| 1097 | } |
| 1098 | |
| 1099 | // Extend the primary selection range, discard the rest. |
| 1100 | function extendSelection(doc, head, other, options) { |
| 1101 | setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options); |
| 1102 | } |
| 1103 | |
| 1104 | // Extend all selections (pos is an array of selections with length |
| 1105 | // equal the number of selections) |
| 1106 | function extendSelections(doc, heads, options) { |
| 1107 | for (var out = [], i = 0; i < doc.sel.ranges.length; i++) |
| 1108 | out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null); |
| 1109 | var newSel = normalizeSelection(out, doc.sel.primIndex); |
| 1110 | setSelection(doc, newSel, options); |
| 1111 | } |
| 1112 | |
| 1113 | // Updates a single range in the selection. |
| 1114 | function replaceOneSelection(doc, i, range, options) { |
| 1115 | var ranges = doc.sel.ranges.slice(0); |
| 1116 | ranges[i] = range; |
| 1117 | setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options); |
| 1118 | } |
| 1119 | |
| 1120 | // Reset the selection to a single range. |
| 1121 | function setSimpleSelection(doc, anchor, head, options) { |
| 1122 | setSelection(doc, simpleSelection(anchor, head), options); |
| 1123 | } |
| 1124 | |
| 1125 | // Give beforeSelectionChange handlers a change to influence a |
| 1126 | // selection update. |
| 1127 | function filterSelectionChange(doc, sel) { |
| 1128 | var obj = { |
| 1129 | ranges: sel.ranges, |
| 1130 | update: function(ranges) { |
| 1131 | this.ranges = []; |
| 1132 | for (var i = 0; i < ranges.length; i++) |
| 1133 | this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor), |
| 1134 | clipPos(doc, ranges[i].head)); |
| 1135 | } |
| 1136 | }; |
| 1137 | signal(doc, "beforeSelectionChange", doc, obj); |
| 1138 | if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj); |
| 1139 | if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1); |
| 1140 | else return sel; |
| 1141 | } |
| 1142 | |
| 1143 | function setSelectionReplaceHistory(doc, sel, options) { |
| 1144 | var done = doc.history.done, last = lst(done); |
| 1145 | if (last && last.ranges) { |
| 1146 | done[done.length - 1] = sel; |
| 1147 | setSelectionNoUndo(doc, sel, options); |
| 1148 | } else { |
| 1149 | setSelection(doc, sel, options); |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | // Set a new selection. |
| 1154 | function setSelection(doc, sel, options) { |
| 1155 | setSelectionNoUndo(doc, sel, options); |
| 1156 | addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options); |
| 1157 | } |
| 1158 | |
| 1159 | function setSelectionNoUndo(doc, sel, options) { |
| 1160 | if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) |
| 1161 | sel = filterSelectionChange(doc, sel); |
| 1162 | |
| 1163 | var bias = options && options.bias || |
| 1164 | (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1); |
| 1165 | setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true)); |
| 1166 | |
| 1167 | if (!(options && options.scroll === false) && doc.cm) |
| 1168 | ensureCursorVisible(doc.cm); |
| 1169 | } |
| 1170 | |
| 1171 | function setSelectionInner(doc, sel) { |
| 1172 | if (sel.equals(doc.sel)) return; |
| 1173 | |
| 1174 | doc.sel = sel; |
| 1175 | |
| 1176 | if (doc.cm) { |
| 1177 | doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true; |
| 1178 | signalCursorActivity(doc.cm); |
| 1179 | } |
| 1180 | signalLater(doc, "cursorActivity", doc); |
| 1181 | } |
| 1182 | |
| 1183 | // Verify that the selection does not partially select any atomic |
| 1184 | // marked ranges. |
| 1185 | function reCheckSelection(doc) { |
| 1186 | setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll); |
| 1187 | } |
| 1188 | |
| 1189 | // Return a selection that does not partially select any atomic |
| 1190 | // ranges. |
| 1191 | function skipAtomicInSelection(doc, sel, bias, mayClear) { |
| 1192 | var out; |
| 1193 | for (var i = 0; i < sel.ranges.length; i++) { |
| 1194 | var range = sel.ranges[i]; |
| 1195 | var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear); |
| 1196 | var newHead = skipAtomic(doc, range.head, bias, mayClear); |
| 1197 | if (out || newAnchor != range.anchor || newHead != range.head) { |
| 1198 | if (!out) out = sel.ranges.slice(0, i); |
| 1199 | out[i] = new Range(newAnchor, newHead); |
| 1200 | } |
| 1201 | } |
| 1202 | return out ? normalizeSelection(out, sel.primIndex) : sel; |
| 1203 | } |
| 1204 | |
| 1205 | // Ensure a given position is not inside an atomic range. |
| 1206 | function skipAtomic(doc, pos, bias, mayClear) { |
| 1207 | var flipped = false, curPos = pos; |
| 1208 | var dir = bias || 1; |
| 1209 | doc.cantEdit = false; |
| 1210 | search: for (;;) { |
| 1211 | var line = getLine(doc, curPos.line); |
| 1212 | if (line.markedSpans) { |
| 1213 | for (var i = 0; i < line.markedSpans.length; ++i) { |
| 1214 | var sp = line.markedSpans[i], m = sp.marker; |
| 1215 | if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && |
| 1216 | (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { |
| 1217 | if (mayClear) { |
| 1218 | signal(m, "beforeCursorEnter"); |
| 1219 | if (m.explicitlyCleared) { |
| 1220 | if (!line.markedSpans) break; |
| 1221 | else {--i; continue;} |
| 1222 | } |
| 1223 | } |
| 1224 | if (!m.atomic) continue; |
| 1225 | var newPos = m.find(dir < 0 ? -1 : 1); |
| 1226 | if (cmp(newPos, curPos) == 0) { |
| 1227 | newPos.ch += dir; |
| 1228 | if (newPos.ch < 0) { |
| 1229 | if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1)); |
| 1230 | else newPos = null; |
| 1231 | } else if (newPos.ch > line.text.length) { |
| 1232 | if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0); |
| 1233 | else newPos = null; |
| 1234 | } |
| 1235 | if (!newPos) { |
| 1236 | if (flipped) { |
| 1237 | // Driven in a corner -- no valid cursor position found at all |
| 1238 | // -- try again *with* clearing, if we didn't already |
| 1239 | if (!mayClear) return skipAtomic(doc, pos, bias, true); |
| 1240 | // Otherwise, turn off editing until further notice, and return the start of the doc |
| 1241 | doc.cantEdit = true; |
| 1242 | return Pos(doc.first, 0); |
| 1243 | } |
| 1244 | flipped = true; newPos = pos; dir = -dir; |
| 1245 | } |
| 1246 | } |
| 1247 | curPos = newPos; |
| 1248 | continue search; |
| 1249 | } |
| 1250 | } |
| 1251 | } |
| 1252 | return curPos; |
| 1253 | } |
| 1254 | } |
| 1255 | |
| 1256 | // SELECTION DRAWING |
| 1257 | |
| 1258 | // Redraw the selection and/or cursor |
| 1259 | function drawSelection(cm) { |
| 1260 | var display = cm.display, doc = cm.doc, result = {}; |
| 1261 | var curFragment = result.cursors = document.createDocumentFragment(); |
| 1262 | var selFragment = result.selection = document.createDocumentFragment(); |
| 1263 | |
| 1264 | for (var i = 0; i < doc.sel.ranges.length; i++) { |
| 1265 | var range = doc.sel.ranges[i]; |
| 1266 | var collapsed = range.empty(); |
| 1267 | if (collapsed || cm.options.showCursorWhenSelecting) |
| 1268 | drawSelectionCursor(cm, range, curFragment); |
| 1269 | if (!collapsed) |
| 1270 | drawSelectionRange(cm, range, selFragment); |
| 1271 | } |
| 1272 | |
| 1273 | // Move the hidden textarea near the cursor to prevent scrolling artifacts |
| 1274 | if (cm.options.moveInputWithCursor) { |
| 1275 | var headPos = cursorCoords(cm, doc.sel.primary().head, "div"); |
| 1276 | var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect(); |
| 1277 | result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10, |
| 1278 | headPos.top + lineOff.top - wrapOff.top)); |
| 1279 | result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10, |
| 1280 | headPos.left + lineOff.left - wrapOff.left)); |
| 1281 | } |
| 1282 | |
| 1283 | return result; |
| 1284 | } |
| 1285 | |
| 1286 | function showSelection(cm, drawn) { |
| 1287 | removeChildrenAndAdd(cm.display.cursorDiv, drawn.cursors); |
| 1288 | removeChildrenAndAdd(cm.display.selectionDiv, drawn.selection); |
| 1289 | if (drawn.teTop != null) { |
| 1290 | cm.display.inputDiv.style.top = drawn.teTop + "px"; |
| 1291 | cm.display.inputDiv.style.left = drawn.teLeft + "px"; |
| 1292 | } |
| 1293 | } |
| 1294 | |
| 1295 | function updateSelection(cm) { |
| 1296 | showSelection(cm, drawSelection(cm)); |
| 1297 | } |
| 1298 | |
| 1299 | // Draws a cursor for the given range |
| 1300 | function drawSelectionCursor(cm, range, output) { |
| 1301 | var pos = cursorCoords(cm, range.head, "div", null, null, !cm.options.singleCursorHeightPerLine); |
| 1302 | |
| 1303 | var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor")); |
| 1304 | cursor.style.left = pos.left + "px"; |
| 1305 | cursor.style.top = pos.top + "px"; |
| 1306 | cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; |
| 1307 | |
| 1308 | if (pos.other) { |
| 1309 | // Secondary cursor, shown when on a 'jump' in bi-directional text |
| 1310 | var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor")); |
| 1311 | otherCursor.style.display = ""; |
| 1312 | otherCursor.style.left = pos.other.left + "px"; |
| 1313 | otherCursor.style.top = pos.other.top + "px"; |
| 1314 | otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; |
| 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | // Draws the given range as a highlighted selection |
| 1319 | function drawSelectionRange(cm, range, output) { |
| 1320 | var display = cm.display, doc = cm.doc; |
| 1321 | var fragment = document.createDocumentFragment(); |
| 1322 | var padding = paddingH(cm.display), leftSide = padding.left, rightSide = display.lineSpace.offsetWidth - padding.right; |
| 1323 | |
| 1324 | function add(left, top, width, bottom) { |
| 1325 | if (top < 0) top = 0; |
| 1326 | top = Math.round(top); |
| 1327 | bottom = Math.round(bottom); |
| 1328 | fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + |
| 1329 | "px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) + |
| 1330 | "px; height: " + (bottom - top) + "px")); |
| 1331 | } |
| 1332 | |
| 1333 | function drawForLine(line, fromArg, toArg) { |
| 1334 | var lineObj = getLine(doc, line); |
| 1335 | var lineLen = lineObj.text.length; |
| 1336 | var start, end; |
| 1337 | function coords(ch, bias) { |
| 1338 | return charCoords(cm, Pos(line, ch), "div", lineObj, bias); |
| 1339 | } |
| 1340 | |
| 1341 | iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { |
| 1342 | var leftPos = coords(from, "left"), rightPos, left, right; |
| 1343 | if (from == to) { |
| 1344 | rightPos = leftPos; |
| 1345 | left = right = leftPos.left; |
| 1346 | } else { |
| 1347 | rightPos = coords(to - 1, "right"); |
| 1348 | if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; } |
| 1349 | left = leftPos.left; |
| 1350 | right = rightPos.right; |
| 1351 | } |
| 1352 | if (fromArg == null && from == 0) left = leftSide; |
| 1353 | if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part |
| 1354 | add(left, leftPos.top, null, leftPos.bottom); |
| 1355 | left = leftSide; |
| 1356 | if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); |
| 1357 | } |
| 1358 | if (toArg == null && to == lineLen) right = rightSide; |
| 1359 | if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left) |
| 1360 | start = leftPos; |
| 1361 | if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right) |
| 1362 | end = rightPos; |
| 1363 | if (left < leftSide + 1) left = leftSide; |
| 1364 | add(left, rightPos.top, right - left, rightPos.bottom); |
| 1365 | }); |
| 1366 | return {start: start, end: end}; |
| 1367 | } |
| 1368 | |
| 1369 | var sFrom = range.from(), sTo = range.to(); |
| 1370 | if (sFrom.line == sTo.line) { |
| 1371 | drawForLine(sFrom.line, sFrom.ch, sTo.ch); |
| 1372 | } else { |
| 1373 | var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line); |
| 1374 | var singleVLine = visualLine(fromLine) == visualLine(toLine); |
| 1375 | var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end; |
| 1376 | var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start; |
| 1377 | if (singleVLine) { |
| 1378 | if (leftEnd.top < rightStart.top - 2) { |
| 1379 | add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); |
| 1380 | add(leftSide, rightStart.top, rightStart.left, rightStart.bottom); |
| 1381 | } else { |
| 1382 | add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); |
| 1383 | } |
| 1384 | } |
| 1385 | if (leftEnd.bottom < rightStart.top) |
| 1386 | add(leftSide, leftEnd.bottom, null, rightStart.top); |
| 1387 | } |
| 1388 | |
| 1389 | output.appendChild(fragment); |
| 1390 | } |
| 1391 | |
| 1392 | // Cursor-blinking |
| 1393 | function restartBlink(cm) { |
| 1394 | if (!cm.state.focused) return; |
| 1395 | var display = cm.display; |
| 1396 | clearInterval(display.blinker); |
| 1397 | var on = true; |
| 1398 | display.cursorDiv.style.visibility = ""; |
| 1399 | if (cm.options.cursorBlinkRate > 0) |
| 1400 | display.blinker = setInterval(function() { |
| 1401 | display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; |
| 1402 | }, cm.options.cursorBlinkRate); |
| 1403 | else if (cm.options.cursorBlinkRate < 0) |
| 1404 | display.cursorDiv.style.visibility = "hidden"; |
| 1405 | } |
| 1406 | |
| 1407 | // HIGHLIGHT WORKER |
| 1408 | |
| 1409 | function startWorker(cm, time) { |
| 1410 | if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo) |
| 1411 | cm.state.highlight.set(time, bind(highlightWorker, cm)); |
| 1412 | } |
| 1413 | |
| 1414 | function highlightWorker(cm) { |
| 1415 | var doc = cm.doc; |
| 1416 | if (doc.frontier < doc.first) doc.frontier = doc.first; |
| 1417 | if (doc.frontier >= cm.display.viewTo) return; |
| 1418 | var end = +new Date + cm.options.workTime; |
| 1419 | var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); |
| 1420 | var changedLines = []; |
| 1421 | |
| 1422 | doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) { |
| 1423 | if (doc.frontier >= cm.display.viewFrom) { // Visible |
| 1424 | var oldStyles = line.styles; |
| 1425 | var highlighted = highlightLine(cm, line, state, true); |
| 1426 | line.styles = highlighted.styles; |
| 1427 | var oldCls = line.styleClasses, newCls = highlighted.classes; |
| 1428 | if (newCls) line.styleClasses = newCls; |
| 1429 | else if (oldCls) line.styleClasses = null; |
| 1430 | var ischange = !oldStyles || oldStyles.length != line.styles.length || |
| 1431 | oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass); |
| 1432 | for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]; |
| 1433 | if (ischange) changedLines.push(doc.frontier); |
| 1434 | line.stateAfter = copyState(doc.mode, state); |
| 1435 | } else { |
| 1436 | processLine(cm, line.text, state); |
| 1437 | line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null; |
| 1438 | } |
| 1439 | ++doc.frontier; |
| 1440 | if (+new Date > end) { |
| 1441 | startWorker(cm, cm.options.workDelay); |
| 1442 | return true; |
| 1443 | } |
| 1444 | }); |
| 1445 | if (changedLines.length) runInOp(cm, function() { |
| 1446 | for (var i = 0; i < changedLines.length; i++) |
| 1447 | regLineChange(cm, changedLines[i], "text"); |
| 1448 | }); |
| 1449 | } |
| 1450 | |
| 1451 | // Finds the line to start with when starting a parse. Tries to |
| 1452 | // find a line with a stateAfter, so that it can start with a |
| 1453 | // valid state. If that fails, it returns the line with the |
| 1454 | // smallest indentation, which tends to need the least context to |
| 1455 | // parse correctly. |
| 1456 | function findStartLine(cm, n, precise) { |
| 1457 | var minindent, minline, doc = cm.doc; |
| 1458 | var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100); |
| 1459 | for (var search = n; search > lim; --search) { |
| 1460 | if (search <= doc.first) return doc.first; |
| 1461 | var line = getLine(doc, search - 1); |
| 1462 | if (line.stateAfter && (!precise || search <= doc.frontier)) return search; |
| 1463 | var indented = countColumn(line.text, null, cm.options.tabSize); |
| 1464 | if (minline == null || minindent > indented) { |
| 1465 | minline = search - 1; |
| 1466 | minindent = indented; |
| 1467 | } |
| 1468 | } |
| 1469 | return minline; |
| 1470 | } |
| 1471 | |
| 1472 | function getStateBefore(cm, n, precise) { |
| 1473 | var doc = cm.doc, display = cm.display; |
| 1474 | if (!doc.mode.startState) return true; |
| 1475 | var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter; |
| 1476 | if (!state) state = startState(doc.mode); |
| 1477 | else state = copyState(doc.mode, state); |
| 1478 | doc.iter(pos, n, function(line) { |
| 1479 | processLine(cm, line.text, state); |
| 1480 | var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo; |
| 1481 | line.stateAfter = save ? copyState(doc.mode, state) : null; |
| 1482 | ++pos; |
| 1483 | }); |
| 1484 | if (precise) doc.frontier = pos; |
| 1485 | return state; |
| 1486 | } |
| 1487 | |
| 1488 | // POSITION MEASUREMENT |
| 1489 | |
| 1490 | function paddingTop(display) {return display.lineSpace.offsetTop;} |
| 1491 | function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;} |
| 1492 | function paddingH(display) { |
| 1493 | if (display.cachedPaddingH) return display.cachedPaddingH; |
| 1494 | var e = removeChildrenAndAdd(display.measure, elt("pre", "x")); |
| 1495 | var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle; |
| 1496 | var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)}; |
| 1497 | if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data; |
| 1498 | return data; |
| 1499 | } |
| 1500 | |
| 1501 | // Ensure the lineView.wrapping.heights array is populated. This is |
| 1502 | // an array of bottom offsets for the lines that make up a drawn |
| 1503 | // line. When lineWrapping is on, there might be more than one |
| 1504 | // height. |
| 1505 | function ensureLineHeights(cm, lineView, rect) { |
| 1506 | var wrapping = cm.options.lineWrapping; |
| 1507 | var curWidth = wrapping && cm.display.scroller.clientWidth; |
| 1508 | if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) { |
| 1509 | var heights = lineView.measure.heights = []; |
| 1510 | if (wrapping) { |
| 1511 | lineView.measure.width = curWidth; |
| 1512 | var rects = lineView.text.firstChild.getClientRects(); |
| 1513 | for (var i = 0; i < rects.length - 1; i++) { |
| 1514 | var cur = rects[i], next = rects[i + 1]; |
| 1515 | if (Math.abs(cur.bottom - next.bottom) > 2) |
| 1516 | heights.push((cur.bottom + next.top) / 2 - rect.top); |
| 1517 | } |
| 1518 | } |
| 1519 | heights.push(rect.bottom - rect.top); |
| 1520 | } |
| 1521 | } |
| 1522 | |
| 1523 | // Find a line map (mapping character offsets to text nodes) and a |
| 1524 | // measurement cache for the given line number. (A line view might |
| 1525 | // contain multiple lines when collapsed ranges are present.) |
| 1526 | function mapFromLineView(lineView, line, lineN) { |
| 1527 | if (lineView.line == line) |
| 1528 | return {map: lineView.measure.map, cache: lineView.measure.cache}; |
| 1529 | for (var i = 0; i < lineView.rest.length; i++) |
| 1530 | if (lineView.rest[i] == line) |
| 1531 | return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]}; |
| 1532 | for (var i = 0; i < lineView.rest.length; i++) |
| 1533 | if (lineNo(lineView.rest[i]) > lineN) |
| 1534 | return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true}; |
| 1535 | } |
| 1536 | |
| 1537 | // Render a line into the hidden node display.externalMeasured. Used |
| 1538 | // when measurement is needed for a line that's not in the viewport. |
| 1539 | function updateExternalMeasurement(cm, line) { |
| 1540 | line = visualLine(line); |
| 1541 | var lineN = lineNo(line); |
| 1542 | var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN); |
| 1543 | view.lineN = lineN; |
| 1544 | var built = view.built = buildLineContent(cm, view); |
| 1545 | view.text = built.pre; |
| 1546 | removeChildrenAndAdd(cm.display.lineMeasure, built.pre); |
| 1547 | return view; |
| 1548 | } |
| 1549 | |
| 1550 | // Get a {top, bottom, left, right} box (in line-local coordinates) |
| 1551 | // for a given character. |
| 1552 | function measureChar(cm, line, ch, bias) { |
| 1553 | return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias); |
| 1554 | } |
| 1555 | |
| 1556 | // Find a line view that corresponds to the given line number. |
| 1557 | function findViewForLine(cm, lineN) { |
| 1558 | if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) |
| 1559 | return cm.display.view[findViewIndex(cm, lineN)]; |
| 1560 | var ext = cm.display.externalMeasured; |
| 1561 | if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) |
| 1562 | return ext; |
| 1563 | } |
| 1564 | |
| 1565 | // Measurement can be split in two steps, the set-up work that |
| 1566 | // applies to the whole line, and the measurement of the actual |
| 1567 | // character. Functions like coordsChar, that need to do a lot of |
| 1568 | // measurements in a row, can thus ensure that the set-up work is |
| 1569 | // only done once. |
| 1570 | function prepareMeasureForLine(cm, line) { |
| 1571 | var lineN = lineNo(line); |
| 1572 | var view = findViewForLine(cm, lineN); |
| 1573 | if (view && !view.text) |
| 1574 | view = null; |
| 1575 | else if (view && view.changes) |
| 1576 | updateLineForChanges(cm, view, lineN, getDimensions(cm)); |
| 1577 | if (!view) |
| 1578 | view = updateExternalMeasurement(cm, line); |
| 1579 | |
| 1580 | var info = mapFromLineView(view, line, lineN); |
| 1581 | return { |
| 1582 | line: line, view: view, rect: null, |
| 1583 | map: info.map, cache: info.cache, before: info.before, |
| 1584 | hasHeights: false |
| 1585 | }; |
| 1586 | } |
| 1587 | |
| 1588 | // Given a prepared measurement object, measures the position of an |
| 1589 | // actual character (or fetches it from the cache). |
| 1590 | function measureCharPrepared(cm, prepared, ch, bias, varHeight) { |
| 1591 | if (prepared.before) ch = -1; |
| 1592 | var key = ch + (bias || ""), found; |
| 1593 | if (prepared.cache.hasOwnProperty(key)) { |
| 1594 | found = prepared.cache[key]; |
| 1595 | } else { |
| 1596 | if (!prepared.rect) |
| 1597 | prepared.rect = prepared.view.text.getBoundingClientRect(); |
| 1598 | if (!prepared.hasHeights) { |
| 1599 | ensureLineHeights(cm, prepared.view, prepared.rect); |
| 1600 | prepared.hasHeights = true; |
| 1601 | } |
| 1602 | found = measureCharInner(cm, prepared, ch, bias); |
| 1603 | if (!found.bogus) prepared.cache[key] = found; |
| 1604 | } |
| 1605 | return {left: found.left, right: found.right, |
| 1606 | top: varHeight ? found.rtop : found.top, |
| 1607 | bottom: varHeight ? found.rbottom : found.bottom}; |
| 1608 | } |
| 1609 | |
| 1610 | var nullRect = {left: 0, right: 0, top: 0, bottom: 0}; |
| 1611 | |
| 1612 | function measureCharInner(cm, prepared, ch, bias) { |
| 1613 | var map = prepared.map; |
| 1614 | |
| 1615 | var node, start, end, collapse; |
| 1616 | // First, search the line map for the text node corresponding to, |
| 1617 | // or closest to, the target character. |
| 1618 | for (var i = 0; i < map.length; i += 3) { |
| 1619 | var mStart = map[i], mEnd = map[i + 1]; |
| 1620 | if (ch < mStart) { |
| 1621 | start = 0; end = 1; |
| 1622 | collapse = "left"; |
| 1623 | } else if (ch < mEnd) { |
| 1624 | start = ch - mStart; |
| 1625 | end = start + 1; |
| 1626 | } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) { |
| 1627 | end = mEnd - mStart; |
| 1628 | start = end - 1; |
| 1629 | if (ch >= mEnd) collapse = "right"; |
| 1630 | } |
| 1631 | if (start != null) { |
| 1632 | node = map[i + 2]; |
| 1633 | if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) |
| 1634 | collapse = bias; |
| 1635 | if (bias == "left" && start == 0) |
| 1636 | while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) { |
| 1637 | node = map[(i -= 3) + 2]; |
| 1638 | collapse = "left"; |
| 1639 | } |
| 1640 | if (bias == "right" && start == mEnd - mStart) |
| 1641 | while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) { |
| 1642 | node = map[(i += 3) + 2]; |
| 1643 | collapse = "right"; |
| 1644 | } |
| 1645 | break; |
| 1646 | } |
| 1647 | } |
| 1648 | |
| 1649 | var rect; |
| 1650 | if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates. |
| 1651 | for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned |
| 1652 | while (start && isExtendingChar(prepared.line.text.charAt(mStart + start))) --start; |
| 1653 | while (mStart + end < mEnd && isExtendingChar(prepared.line.text.charAt(mStart + end))) ++end; |
| 1654 | if (ie && ie_version < 9 && start == 0 && end == mEnd - mStart) { |
| 1655 | rect = node.parentNode.getBoundingClientRect(); |
| 1656 | } else if (ie && cm.options.lineWrapping) { |
| 1657 | var rects = range(node, start, end).getClientRects(); |
| 1658 | if (rects.length) |
| 1659 | rect = rects[bias == "right" ? rects.length - 1 : 0]; |
| 1660 | else |
| 1661 | rect = nullRect; |
| 1662 | } else { |
| 1663 | rect = range(node, start, end).getBoundingClientRect() || nullRect; |
| 1664 | } |
| 1665 | if (rect.left || rect.right || start == 0) break; |
| 1666 | end = start; |
| 1667 | start = start - 1; |
| 1668 | collapse = "right"; |
| 1669 | } |
| 1670 | if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect); |
| 1671 | } else { // If it is a widget, simply get the box for the whole widget. |
| 1672 | if (start > 0) collapse = bias = "right"; |
| 1673 | var rects; |
| 1674 | if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) |
| 1675 | rect = rects[bias == "right" ? rects.length - 1 : 0]; |
| 1676 | else |
| 1677 | rect = node.getBoundingClientRect(); |
| 1678 | } |
| 1679 | if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) { |
| 1680 | var rSpan = node.parentNode.getClientRects()[0]; |
| 1681 | if (rSpan) |
| 1682 | rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; |
| 1683 | else |
| 1684 | rect = nullRect; |
| 1685 | } |
| 1686 | |
| 1687 | var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top; |
| 1688 | var mid = (rtop + rbot) / 2; |
| 1689 | var heights = prepared.view.measure.heights; |
| 1690 | for (var i = 0; i < heights.length - 1; i++) |
| 1691 | if (mid < heights[i]) break; |
| 1692 | var top = i ? heights[i - 1] : 0, bot = heights[i]; |
| 1693 | var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left, |
| 1694 | right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left, |
| 1695 | top: top, bottom: bot}; |
| 1696 | if (!rect.left && !rect.right) result.bogus = true; |
| 1697 | if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; } |
| 1698 | |
| 1699 | return result; |
| 1700 | } |
| 1701 | |
| 1702 | // Work around problem with bounding client rects on ranges being |
| 1703 | // returned incorrectly when zoomed on IE10 and below. |
| 1704 | function maybeUpdateRectForZooming(measure, rect) { |
| 1705 | if (!window.screen || screen.logicalXDPI == null || |
| 1706 | screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure)) |
| 1707 | return rect; |
| 1708 | var scaleX = screen.logicalXDPI / screen.deviceXDPI; |
| 1709 | var scaleY = screen.logicalYDPI / screen.deviceYDPI; |
| 1710 | return {left: rect.left * scaleX, right: rect.right * scaleX, |
| 1711 | top: rect.top * scaleY, bottom: rect.bottom * scaleY}; |
| 1712 | } |
| 1713 | |
| 1714 | function clearLineMeasurementCacheFor(lineView) { |
| 1715 | if (lineView.measure) { |
| 1716 | lineView.measure.cache = {}; |
| 1717 | lineView.measure.heights = null; |
| 1718 | if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++) |
| 1719 | lineView.measure.caches[i] = {}; |
| 1720 | } |
| 1721 | } |
| 1722 | |
| 1723 | function clearLineMeasurementCache(cm) { |
| 1724 | cm.display.externalMeasure = null; |
| 1725 | removeChildren(cm.display.lineMeasure); |
| 1726 | for (var i = 0; i < cm.display.view.length; i++) |
| 1727 | clearLineMeasurementCacheFor(cm.display.view[i]); |
| 1728 | } |
| 1729 | |
| 1730 | function clearCaches(cm) { |
| 1731 | clearLineMeasurementCache(cm); |
| 1732 | cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null; |
| 1733 | if (!cm.options.lineWrapping) cm.display.maxLineChanged = true; |
| 1734 | cm.display.lineNumChars = null; |
| 1735 | } |
| 1736 | |
| 1737 | function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; } |
| 1738 | function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; } |
| 1739 | |
| 1740 | // Converts a {top, bottom, left, right} box from line-local |
| 1741 | // coordinates into another coordinate system. Context may be one of |
| 1742 | // "line", "div" (display.lineDiv), "local"/null (editor), or "page". |
| 1743 | function intoCoordSystem(cm, lineObj, rect, context) { |
| 1744 | if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) { |
| 1745 | var size = widgetHeight(lineObj.widgets[i]); |
| 1746 | rect.top += size; rect.bottom += size; |
| 1747 | } |
| 1748 | if (context == "line") return rect; |
| 1749 | if (!context) context = "local"; |
| 1750 | var yOff = heightAtLine(lineObj); |
| 1751 | if (context == "local") yOff += paddingTop(cm.display); |
| 1752 | else yOff -= cm.display.viewOffset; |
| 1753 | if (context == "page" || context == "window") { |
| 1754 | var lOff = cm.display.lineSpace.getBoundingClientRect(); |
| 1755 | yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); |
| 1756 | var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); |
| 1757 | rect.left += xOff; rect.right += xOff; |
| 1758 | } |
| 1759 | rect.top += yOff; rect.bottom += yOff; |
| 1760 | return rect; |
| 1761 | } |
| 1762 | |
| 1763 | // Coverts a box from "div" coords to another coordinate system. |
| 1764 | // Context may be "window", "page", "div", or "local"/null. |
| 1765 | function fromCoordSystem(cm, coords, context) { |
| 1766 | if (context == "div") return coords; |
| 1767 | var left = coords.left, top = coords.top; |
| 1768 | // First move into "page" coordinate system |
| 1769 | if (context == "page") { |
| 1770 | left -= pageScrollX(); |
| 1771 | top -= pageScrollY(); |
| 1772 | } else if (context == "local" || !context) { |
| 1773 | var localBox = cm.display.sizer.getBoundingClientRect(); |
| 1774 | left += localBox.left; |
| 1775 | top += localBox.top; |
| 1776 | } |
| 1777 | |
| 1778 | var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect(); |
| 1779 | return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}; |
| 1780 | } |
| 1781 | |
| 1782 | function charCoords(cm, pos, context, lineObj, bias) { |
| 1783 | if (!lineObj) lineObj = getLine(cm.doc, pos.line); |
| 1784 | return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context); |
| 1785 | } |
| 1786 | |
| 1787 | // Returns a box for a given cursor position, which may have an |
| 1788 | // 'other' property containing the position of the secondary cursor |
| 1789 | // on a bidi boundary. |
| 1790 | function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) { |
| 1791 | lineObj = lineObj || getLine(cm.doc, pos.line); |
| 1792 | if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj); |
| 1793 | function get(ch, right) { |
| 1794 | var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight); |
| 1795 | if (right) m.left = m.right; else m.right = m.left; |
| 1796 | return intoCoordSystem(cm, lineObj, m, context); |
| 1797 | } |
| 1798 | function getBidi(ch, partPos) { |
| 1799 | var part = order[partPos], right = part.level % 2; |
| 1800 | if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) { |
| 1801 | part = order[--partPos]; |
| 1802 | ch = bidiRight(part) - (part.level % 2 ? 0 : 1); |
| 1803 | right = true; |
| 1804 | } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) { |
| 1805 | part = order[++partPos]; |
| 1806 | ch = bidiLeft(part) - part.level % 2; |
| 1807 | right = false; |
| 1808 | } |
| 1809 | if (right && ch == part.to && ch > part.from) return get(ch - 1); |
| 1810 | return get(ch, right); |
| 1811 | } |
| 1812 | var order = getOrder(lineObj), ch = pos.ch; |
| 1813 | if (!order) return get(ch); |
| 1814 | var partPos = getBidiPartAt(order, ch); |
| 1815 | var val = getBidi(ch, partPos); |
| 1816 | if (bidiOther != null) val.other = getBidi(ch, bidiOther); |
| 1817 | return val; |
| 1818 | } |
| 1819 | |
| 1820 | // Used to cheaply estimate the coordinates for a position. Used for |
| 1821 | // intermediate scroll updates. |
| 1822 | function estimateCoords(cm, pos) { |
| 1823 | var left = 0, pos = clipPos(cm.doc, pos); |
| 1824 | if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch; |
| 1825 | var lineObj = getLine(cm.doc, pos.line); |
| 1826 | var top = heightAtLine(lineObj) + paddingTop(cm.display); |
| 1827 | return {left: left, right: left, top: top, bottom: top + lineObj.height}; |
| 1828 | } |
| 1829 | |
| 1830 | // Positions returned by coordsChar contain some extra information. |
| 1831 | // xRel is the relative x position of the input coordinates compared |
| 1832 | // to the found position (so xRel > 0 means the coordinates are to |
| 1833 | // the right of the character position, for example). When outside |
| 1834 | // is true, that means the coordinates lie outside the line's |
| 1835 | // vertical range. |
| 1836 | function PosWithInfo(line, ch, outside, xRel) { |
| 1837 | var pos = Pos(line, ch); |
| 1838 | pos.xRel = xRel; |
| 1839 | if (outside) pos.outside = true; |
| 1840 | return pos; |
| 1841 | } |
| 1842 | |
| 1843 | // Compute the character position closest to the given coordinates. |
| 1844 | // Input must be lineSpace-local ("div" coordinate system). |
| 1845 | function coordsChar(cm, x, y) { |
| 1846 | var doc = cm.doc; |
| 1847 | y += cm.display.viewOffset; |
| 1848 | if (y < 0) return PosWithInfo(doc.first, 0, true, -1); |
| 1849 | var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1; |
| 1850 | if (lineN > last) |
| 1851 | return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1); |
| 1852 | if (x < 0) x = 0; |
| 1853 | |
| 1854 | var lineObj = getLine(doc, lineN); |
| 1855 | for (;;) { |
| 1856 | var found = coordsCharInner(cm, lineObj, lineN, x, y); |
| 1857 | var merged = collapsedSpanAtEnd(lineObj); |
| 1858 | var mergedPos = merged && merged.find(0, true); |
| 1859 | if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0)) |
| 1860 | lineN = lineNo(lineObj = mergedPos.to.line); |
| 1861 | else |
| 1862 | return found; |
| 1863 | } |
| 1864 | } |
| 1865 | |
| 1866 | function coordsCharInner(cm, lineObj, lineNo, x, y) { |
| 1867 | var innerOff = y - heightAtLine(lineObj); |
| 1868 | var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; |
| 1869 | var preparedMeasure = prepareMeasureForLine(cm, lineObj); |
| 1870 | |
| 1871 | function getX(ch) { |
| 1872 | var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure); |
| 1873 | wrongLine = true; |
| 1874 | if (innerOff > sp.bottom) return sp.left - adjust; |
| 1875 | else if (innerOff < sp.top) return sp.left + adjust; |
| 1876 | else wrongLine = false; |
| 1877 | return sp.left; |
| 1878 | } |
| 1879 | |
| 1880 | var bidi = getOrder(lineObj), dist = lineObj.text.length; |
| 1881 | var from = lineLeft(lineObj), to = lineRight(lineObj); |
| 1882 | var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine; |
| 1883 | |
| 1884 | if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1); |
| 1885 | // Do a binary search between these bounds. |
| 1886 | for (;;) { |
| 1887 | if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { |
| 1888 | var ch = x < fromX || x - fromX <= toX - x ? from : to; |
| 1889 | var xDiff = x - (ch == from ? fromX : toX); |
| 1890 | while (isExtendingChar(lineObj.text.charAt(ch))) ++ch; |
| 1891 | var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside, |
| 1892 | xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0); |
| 1893 | return pos; |
| 1894 | } |
| 1895 | var step = Math.ceil(dist / 2), middle = from + step; |
| 1896 | if (bidi) { |
| 1897 | middle = from; |
| 1898 | for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1); |
| 1899 | } |
| 1900 | var middleX = getX(middle); |
| 1901 | if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;} |
| 1902 | else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;} |
| 1903 | } |
| 1904 | } |
| 1905 | |
| 1906 | var measureText; |
| 1907 | // Compute the default text height. |
| 1908 | function textHeight(display) { |
| 1909 | if (display.cachedTextHeight != null) return display.cachedTextHeight; |
| 1910 | if (measureText == null) { |
| 1911 | measureText = elt("pre"); |
| 1912 | // Measure a bunch of lines, for browsers that compute |
| 1913 | // fractional heights. |
| 1914 | for (var i = 0; i < 49; ++i) { |
| 1915 | measureText.appendChild(document.createTextNode("x")); |
| 1916 | measureText.appendChild(elt("br")); |
| 1917 | } |
| 1918 | measureText.appendChild(document.createTextNode("x")); |
| 1919 | } |
| 1920 | removeChildrenAndAdd(display.measure, measureText); |
| 1921 | var height = measureText.offsetHeight / 50; |
| 1922 | if (height > 3) display.cachedTextHeight = height; |
| 1923 | removeChildren(display.measure); |
| 1924 | return height || 1; |
| 1925 | } |
| 1926 | |
| 1927 | // Compute the default character width. |
| 1928 | function charWidth(display) { |
| 1929 | if (display.cachedCharWidth != null) return display.cachedCharWidth; |
| 1930 | var anchor = elt("span", "xxxxxxxxxx"); |
| 1931 | var pre = elt("pre", [anchor]); |
| 1932 | removeChildrenAndAdd(display.measure, pre); |
| 1933 | var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10; |
| 1934 | if (width > 2) display.cachedCharWidth = width; |
| 1935 | return width || 10; |
| 1936 | } |
| 1937 | |
| 1938 | // OPERATIONS |
| 1939 | |
| 1940 | // Operations are used to wrap a series of changes to the editor |
| 1941 | // state in such a way that each change won't have to update the |
| 1942 | // cursor and display (which would be awkward, slow, and |
| 1943 | // error-prone). Instead, display updates are batched and then all |
| 1944 | // combined and executed at once. |
| 1945 | |
| 1946 | var operationGroup = null; |
| 1947 | |
| 1948 | var nextOpId = 0; |
| 1949 | // Start a new operation. |
| 1950 | function startOperation(cm) { |
| 1951 | cm.curOp = { |
| 1952 | cm: cm, |
| 1953 | viewChanged: false, // Flag that indicates that lines might need to be redrawn |
| 1954 | startHeight: cm.doc.height, // Used to detect need to update scrollbar |
| 1955 | forceUpdate: false, // Used to force a redraw |
| 1956 | updateInput: null, // Whether to reset the input textarea |
| 1957 | typing: false, // Whether this reset should be careful to leave existing text (for compositing) |
| 1958 | changeObjs: null, // Accumulated changes, for firing change events |
| 1959 | cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on |
| 1960 | cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already |
| 1961 | selectionChanged: false, // Whether the selection needs to be redrawn |
| 1962 | updateMaxLine: false, // Set when the widest line needs to be determined anew |
| 1963 | scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet |
| 1964 | scrollToPos: null, // Used to scroll to a specific position |
| 1965 | id: ++nextOpId // Unique ID |
| 1966 | }; |
| 1967 | if (operationGroup) { |
| 1968 | operationGroup.ops.push(cm.curOp); |
| 1969 | } else { |
| 1970 | cm.curOp.ownsGroup = operationGroup = { |
| 1971 | ops: [cm.curOp], |
| 1972 | delayedCallbacks: [] |
| 1973 | }; |
| 1974 | } |
| 1975 | } |
| 1976 | |
| 1977 | function fireCallbacksForOps(group) { |
| 1978 | // Calls delayed callbacks and cursorActivity handlers until no |
| 1979 | // new ones appear |
| 1980 | var callbacks = group.delayedCallbacks, i = 0; |
| 1981 | do { |
| 1982 | for (; i < callbacks.length; i++) |
| 1983 | callbacks[i](); |
| 1984 | for (var j = 0; j < group.ops.length; j++) { |
| 1985 | var op = group.ops[j]; |
| 1986 | if (op.cursorActivityHandlers) |
| 1987 | while (op.cursorActivityCalled < op.cursorActivityHandlers.length) |
| 1988 | op.cursorActivityHandlers[op.cursorActivityCalled++](op.cm); |
| 1989 | } |
| 1990 | } while (i < callbacks.length); |
| 1991 | } |
| 1992 | |
| 1993 | // Finish an operation, updating the display and signalling delayed events |
| 1994 | function endOperation(cm) { |
| 1995 | var op = cm.curOp, group = op.ownsGroup; |
| 1996 | if (!group) return; |
| 1997 | |
| 1998 | try { fireCallbacksForOps(group); } |
| 1999 | finally { |
| 2000 | operationGroup = null; |
| 2001 | for (var i = 0; i < group.ops.length; i++) |
| 2002 | group.ops[i].cm.curOp = null; |
| 2003 | endOperations(group); |
| 2004 | } |
| 2005 | } |
| 2006 | |
| 2007 | // The DOM updates done when an operation finishes are batched so |
| 2008 | // that the minimum number of relayouts are required. |
| 2009 | function endOperations(group) { |
| 2010 | var ops = group.ops; |
| 2011 | for (var i = 0; i < ops.length; i++) // Read DOM |
| 2012 | endOperation_R1(ops[i]); |
| 2013 | for (var i = 0; i < ops.length; i++) // Write DOM (maybe) |
| 2014 | endOperation_W1(ops[i]); |
| 2015 | for (var i = 0; i < ops.length; i++) // Read DOM |
| 2016 | endOperation_R2(ops[i]); |
| 2017 | for (var i = 0; i < ops.length; i++) // Write DOM (maybe) |
| 2018 | endOperation_W2(ops[i]); |
| 2019 | for (var i = 0; i < ops.length; i++) // Read DOM |
| 2020 | endOperation_finish(ops[i]); |
| 2021 | } |
| 2022 | |
| 2023 | function endOperation_R1(op) { |
| 2024 | var cm = op.cm, display = cm.display; |
| 2025 | if (op.updateMaxLine) findMaxLine(cm); |
| 2026 | |
| 2027 | op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null || |
| 2028 | op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom || |
| 2029 | op.scrollToPos.to.line >= display.viewTo) || |
| 2030 | display.maxLineChanged && cm.options.lineWrapping; |
| 2031 | op.update = op.mustUpdate && |
| 2032 | new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate); |
| 2033 | } |
| 2034 | |
| 2035 | function endOperation_W1(op) { |
| 2036 | op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update); |
| 2037 | } |
| 2038 | |
| 2039 | function endOperation_R2(op) { |
| 2040 | var cm = op.cm, display = cm.display; |
| 2041 | if (op.updatedDisplay) updateHeightsInViewport(cm); |
| 2042 | |
| 2043 | op.barMeasure = measureForScrollbars(cm); |
| 2044 | |
| 2045 | // If the max line changed since it was last measured, measure it, |
| 2046 | // and ensure the document's width matches it. |
| 2047 | // updateDisplay_W2 will use these properties to do the actual resizing |
| 2048 | if (display.maxLineChanged && !cm.options.lineWrapping) { |
| 2049 | op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3; |
| 2050 | op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo + |
| 2051 | scrollerCutOff - display.scroller.clientWidth); |
| 2052 | } |
| 2053 | |
| 2054 | if (op.updatedDisplay || op.selectionChanged) |
| 2055 | op.newSelectionNodes = drawSelection(cm); |
| 2056 | } |
| 2057 | |
| 2058 | function endOperation_W2(op) { |
| 2059 | var cm = op.cm; |
| 2060 | |
| 2061 | if (op.adjustWidthTo != null) { |
| 2062 | cm.display.sizer.style.minWidth = op.adjustWidthTo + "px"; |
| 2063 | if (op.maxScrollLeft < cm.doc.scrollLeft) |
| 2064 | setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); |
| 2065 | cm.display.maxLineChanged = false; |
| 2066 | } |
| 2067 | |
| 2068 | if (op.newSelectionNodes) |
| 2069 | showSelection(cm, op.newSelectionNodes); |
| 2070 | if (op.updatedDisplay) |
| 2071 | setDocumentHeight(cm, op.barMeasure); |
| 2072 | if (op.updatedDisplay || op.startHeight != cm.doc.height) |
| 2073 | updateScrollbars(cm, op.barMeasure); |
| 2074 | |
| 2075 | if (op.selectionChanged) restartBlink(cm); |
| 2076 | |
| 2077 | if (cm.state.focused && op.updateInput) |
| 2078 | resetInput(cm, op.typing); |
| 2079 | } |
| 2080 | |
| 2081 | function endOperation_finish(op) { |
| 2082 | var cm = op.cm, display = cm.display, doc = cm.doc; |
| 2083 | |
| 2084 | if (op.adjustWidthTo != null && Math.abs(op.barMeasure.scrollWidth - cm.display.scroller.scrollWidth) > 1) |
| 2085 | updateScrollbars(cm); |
| 2086 | |
| 2087 | if (op.updatedDisplay) postUpdateDisplay(cm, op.update); |
| 2088 | |
| 2089 | // Abort mouse wheel delta measurement, when scrolling explicitly |
| 2090 | if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos)) |
| 2091 | display.wheelStartX = display.wheelStartY = null; |
| 2092 | |
| 2093 | // Propagate the scroll position to the actual DOM scroller |
| 2094 | if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) { |
| 2095 | var top = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop)); |
| 2096 | display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = top; |
| 2097 | } |
| 2098 | if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) { |
| 2099 | var left = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, op.scrollLeft)); |
| 2100 | display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = left; |
| 2101 | alignHorizontally(cm); |
| 2102 | } |
| 2103 | // If we need to scroll a specific position into view, do so. |
| 2104 | if (op.scrollToPos) { |
| 2105 | var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from), |
| 2106 | clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin); |
| 2107 | if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords); |
| 2108 | } |
| 2109 | |
| 2110 | // Fire events for markers that are hidden/unidden by editing or |
| 2111 | // undoing |
| 2112 | var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; |
| 2113 | if (hidden) for (var i = 0; i < hidden.length; ++i) |
| 2114 | if (!hidden[i].lines.length) signal(hidden[i], "hide"); |
| 2115 | if (unhidden) for (var i = 0; i < unhidden.length; ++i) |
| 2116 | if (unhidden[i].lines.length) signal(unhidden[i], "unhide"); |
| 2117 | |
| 2118 | if (display.wrapper.offsetHeight) |
| 2119 | doc.scrollTop = cm.display.scroller.scrollTop; |
| 2120 | |
| 2121 | // Apply workaround for two webkit bugs |
| 2122 | if (op.updatedDisplay && webkit) { |
| 2123 | if (cm.options.lineWrapping) |
| 2124 | checkForWebkitWidthBug(cm, op.barMeasure); // (Issue #2420) |
| 2125 | if (op.barMeasure.scrollWidth > op.barMeasure.clientWidth && |
| 2126 | op.barMeasure.scrollWidth < op.barMeasure.clientWidth + 1 && |
| 2127 | !hScrollbarTakesSpace(cm)) |
| 2128 | updateScrollbars(cm); // (Issue #2562) |
| 2129 | } |
| 2130 | |
| 2131 | // Fire change events, and delayed event handlers |
| 2132 | if (op.changeObjs) |
| 2133 | signal(cm, "changes", cm, op.changeObjs); |
| 2134 | } |
| 2135 | |
| 2136 | // Run the given function in an operation |
| 2137 | function runInOp(cm, f) { |
| 2138 | if (cm.curOp) return f(); |
| 2139 | startOperation(cm); |
| 2140 | try { return f(); } |
| 2141 | finally { endOperation(cm); } |
| 2142 | } |
| 2143 | // Wraps a function in an operation. Returns the wrapped function. |
| 2144 | function operation(cm, f) { |
| 2145 | return function() { |
| 2146 | if (cm.curOp) return f.apply(cm, arguments); |
| 2147 | startOperation(cm); |
| 2148 | try { return f.apply(cm, arguments); } |
| 2149 | finally { endOperation(cm); } |
| 2150 | }; |
| 2151 | } |
| 2152 | // Used to add methods to editor and doc instances, wrapping them in |
| 2153 | // operations. |
| 2154 | function methodOp(f) { |
| 2155 | return function() { |
| 2156 | if (this.curOp) return f.apply(this, arguments); |
| 2157 | startOperation(this); |
| 2158 | try { return f.apply(this, arguments); } |
| 2159 | finally { endOperation(this); } |
| 2160 | }; |
| 2161 | } |
| 2162 | function docMethodOp(f) { |
| 2163 | return function() { |
| 2164 | var cm = this.cm; |
| 2165 | if (!cm || cm.curOp) return f.apply(this, arguments); |
| 2166 | startOperation(cm); |
| 2167 | try { return f.apply(this, arguments); } |
| 2168 | finally { endOperation(cm); } |
| 2169 | }; |
| 2170 | } |
| 2171 | |
| 2172 | // VIEW TRACKING |
| 2173 | |
| 2174 | // These objects are used to represent the visible (currently drawn) |
| 2175 | // part of the document. A LineView may correspond to multiple |
| 2176 | // logical lines, if those are connected by collapsed ranges. |
| 2177 | function LineView(doc, line, lineN) { |
| 2178 | // The starting line |
| 2179 | this.line = line; |
| 2180 | // Continuing lines, if any |
| 2181 | this.rest = visualLineContinued(line); |
| 2182 | // Number of logical lines in this visual line |
| 2183 | this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1; |
| 2184 | this.node = this.text = null; |
| 2185 | this.hidden = lineIsHidden(doc, line); |
| 2186 | } |
| 2187 | |
| 2188 | // Create a range of LineView objects for the given lines. |
| 2189 | function buildViewArray(cm, from, to) { |
| 2190 | var array = [], nextPos; |
| 2191 | for (var pos = from; pos < to; pos = nextPos) { |
| 2192 | var view = new LineView(cm.doc, getLine(cm.doc, pos), pos); |
| 2193 | nextPos = pos + view.size; |
| 2194 | array.push(view); |
| 2195 | } |
| 2196 | return array; |
| 2197 | } |
| 2198 | |
| 2199 | // Updates the display.view data structure for a given change to the |
| 2200 | // document. From and to are in pre-change coordinates. Lendiff is |
| 2201 | // the amount of lines added or subtracted by the change. This is |
| 2202 | // used for changes that span multiple lines, or change the way |
| 2203 | // lines are divided into visual lines. regLineChange (below) |
| 2204 | // registers single-line changes. |
| 2205 | function regChange(cm, from, to, lendiff) { |
| 2206 | if (from == null) from = cm.doc.first; |
| 2207 | if (to == null) to = cm.doc.first + cm.doc.size; |
| 2208 | if (!lendiff) lendiff = 0; |
| 2209 | |
| 2210 | var display = cm.display; |
| 2211 | if (lendiff && to < display.viewTo && |
| 2212 | (display.updateLineNumbers == null || display.updateLineNumbers > from)) |
| 2213 | display.updateLineNumbers = from; |
| 2214 | |
| 2215 | cm.curOp.viewChanged = true; |
| 2216 | |
| 2217 | if (from >= display.viewTo) { // Change after |
| 2218 | if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) |
| 2219 | resetView(cm); |
| 2220 | } else if (to <= display.viewFrom) { // Change before |
| 2221 | if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) { |
| 2222 | resetView(cm); |
| 2223 | } else { |
| 2224 | display.viewFrom += lendiff; |
| 2225 | display.viewTo += lendiff; |
| 2226 | } |
| 2227 | } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap |
| 2228 | resetView(cm); |
| 2229 | } else if (from <= display.viewFrom) { // Top overlap |
| 2230 | var cut = viewCuttingPoint(cm, to, to + lendiff, 1); |
| 2231 | if (cut) { |
| 2232 | display.view = display.view.slice(cut.index); |
| 2233 | display.viewFrom = cut.lineN; |
| 2234 | display.viewTo += lendiff; |
| 2235 | } else { |
| 2236 | resetView(cm); |
| 2237 | } |
| 2238 | } else if (to >= display.viewTo) { // Bottom overlap |
| 2239 | var cut = viewCuttingPoint(cm, from, from, -1); |
| 2240 | if (cut) { |
| 2241 | display.view = display.view.slice(0, cut.index); |
| 2242 | display.viewTo = cut.lineN; |
| 2243 | } else { |
| 2244 | resetView(cm); |
| 2245 | } |
| 2246 | } else { // Gap in the middle |
| 2247 | var cutTop = viewCuttingPoint(cm, from, from, -1); |
| 2248 | var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1); |
| 2249 | if (cutTop && cutBot) { |
| 2250 | display.view = display.view.slice(0, cutTop.index) |
| 2251 | .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN)) |
| 2252 | .concat(display.view.slice(cutBot.index)); |
| 2253 | display.viewTo += lendiff; |
| 2254 | } else { |
| 2255 | resetView(cm); |
| 2256 | } |
| 2257 | } |
| 2258 | |
| 2259 | var ext = display.externalMeasured; |
| 2260 | if (ext) { |
| 2261 | if (to < ext.lineN) |
| 2262 | ext.lineN += lendiff; |
| 2263 | else if (from < ext.lineN + ext.size) |
| 2264 | display.externalMeasured = null; |
| 2265 | } |
| 2266 | } |
| 2267 | |
| 2268 | // Register a change to a single line. Type must be one of "text", |
| 2269 | // "gutter", "class", "widget" |
| 2270 | function regLineChange(cm, line, type) { |
| 2271 | cm.curOp.viewChanged = true; |
| 2272 | var display = cm.display, ext = cm.display.externalMeasured; |
| 2273 | if (ext && line >= ext.lineN && line < ext.lineN + ext.size) |
| 2274 | display.externalMeasured = null; |
| 2275 | |
| 2276 | if (line < display.viewFrom || line >= display.viewTo) return; |
| 2277 | var lineView = display.view[findViewIndex(cm, line)]; |
| 2278 | if (lineView.node == null) return; |
| 2279 | var arr = lineView.changes || (lineView.changes = []); |
| 2280 | if (indexOf(arr, type) == -1) arr.push(type); |
| 2281 | } |
| 2282 | |
| 2283 | // Clear the view. |
| 2284 | function resetView(cm) { |
| 2285 | cm.display.viewFrom = cm.display.viewTo = cm.doc.first; |
| 2286 | cm.display.view = []; |
| 2287 | cm.display.viewOffset = 0; |
| 2288 | } |
| 2289 | |
| 2290 | // Find the view element corresponding to a given line. Return null |
| 2291 | // when the line isn't visible. |
| 2292 | function findViewIndex(cm, n) { |
| 2293 | if (n >= cm.display.viewTo) return null; |
| 2294 | n -= cm.display.viewFrom; |
| 2295 | if (n < 0) return null; |
| 2296 | var view = cm.display.view; |
| 2297 | for (var i = 0; i < view.length; i++) { |
| 2298 | n -= view[i].size; |
| 2299 | if (n < 0) return i; |
| 2300 | } |
| 2301 | } |
| 2302 | |
| 2303 | function viewCuttingPoint(cm, oldN, newN, dir) { |
| 2304 | var index = findViewIndex(cm, oldN), diff, view = cm.display.view; |
| 2305 | if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size) |
| 2306 | return {index: index, lineN: newN}; |
| 2307 | for (var i = 0, n = cm.display.viewFrom; i < index; i++) |
| 2308 | n += view[i].size; |
| 2309 | if (n != oldN) { |
| 2310 | if (dir > 0) { |
| 2311 | if (index == view.length - 1) return null; |
| 2312 | diff = (n + view[index].size) - oldN; |
| 2313 | index++; |
| 2314 | } else { |
| 2315 | diff = n - oldN; |
| 2316 | } |
| 2317 | oldN += diff; newN += diff; |
| 2318 | } |
| 2319 | while (visualLineNo(cm.doc, newN) != newN) { |
| 2320 | if (index == (dir < 0 ? 0 : view.length - 1)) return null; |
| 2321 | newN += dir * view[index - (dir < 0 ? 1 : 0)].size; |
| 2322 | index += dir; |
| 2323 | } |
| 2324 | return {index: index, lineN: newN}; |
| 2325 | } |
| 2326 | |
| 2327 | // Force the view to cover a given range, adding empty view element |
| 2328 | // or clipping off existing ones as needed. |
| 2329 | function adjustView(cm, from, to) { |
| 2330 | var display = cm.display, view = display.view; |
| 2331 | if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) { |
| 2332 | display.view = buildViewArray(cm, from, to); |
| 2333 | display.viewFrom = from; |
| 2334 | } else { |
| 2335 | if (display.viewFrom > from) |
| 2336 | display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); |
| 2337 | else if (display.viewFrom < from) |
| 2338 | display.view = display.view.slice(findViewIndex(cm, from)); |
| 2339 | display.viewFrom = from; |
| 2340 | if (display.viewTo < to) |
| 2341 | display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); |
| 2342 | else if (display.viewTo > to) |
| 2343 | display.view = display.view.slice(0, findViewIndex(cm, to)); |
| 2344 | } |
| 2345 | display.viewTo = to; |
| 2346 | } |
| 2347 | |
| 2348 | // Count the number of lines in the view whose DOM representation is |
| 2349 | // out of date (or nonexistent). |
| 2350 | function countDirtyView(cm) { |
| 2351 | var view = cm.display.view, dirty = 0; |
| 2352 | for (var i = 0; i < view.length; i++) { |
| 2353 | var lineView = view[i]; |
| 2354 | if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty; |
| 2355 | } |
| 2356 | return dirty; |
| 2357 | } |
| 2358 | |
| 2359 | // INPUT HANDLING |
| 2360 | |
| 2361 | // Poll for input changes, using the normal rate of polling. This |
| 2362 | // runs as long as the editor is focused. |
| 2363 | function slowPoll(cm) { |
| 2364 | if (cm.display.pollingFast) return; |
| 2365 | cm.display.poll.set(cm.options.pollInterval, function() { |
| 2366 | readInput(cm); |
| 2367 | if (cm.state.focused) slowPoll(cm); |
| 2368 | }); |
| 2369 | } |
| 2370 | |
| 2371 | // When an event has just come in that is likely to add or change |
| 2372 | // something in the input textarea, we poll faster, to ensure that |
| 2373 | // the change appears on the screen quickly. |
| 2374 | function fastPoll(cm) { |
| 2375 | var missed = false; |
| 2376 | cm.display.pollingFast = true; |
| 2377 | function p() { |
| 2378 | var changed = readInput(cm); |
| 2379 | if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);} |
| 2380 | else {cm.display.pollingFast = false; slowPoll(cm);} |
| 2381 | } |
| 2382 | cm.display.poll.set(20, p); |
| 2383 | } |
| 2384 | |
| 2385 | // This will be set to an array of strings when copying, so that, |
| 2386 | // when pasting, we know what kind of selections the copied text |
| 2387 | // was made out of. |
| 2388 | var lastCopied = null; |
| 2389 | |
| 2390 | // Read input from the textarea, and update the document to match. |
| 2391 | // When something is selected, it is present in the textarea, and |
| 2392 | // selected (unless it is huge, in which case a placeholder is |
| 2393 | // used). When nothing is selected, the cursor sits after previously |
| 2394 | // seen text (can be empty), which is stored in prevInput (we must |
| 2395 | // not reset the textarea when typing, because that breaks IME). |
| 2396 | function readInput(cm) { |
| 2397 | var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc; |
| 2398 | // Since this is called a *lot*, try to bail out as cheaply as |
| 2399 | // possible when it is clear that nothing happened. hasSelection |
| 2400 | // will be the case when there is a lot of text in the textarea, |
| 2401 | // in which case reading its value would be expensive. |
| 2402 | if (!cm.state.focused || (hasSelection(input) && !prevInput) || isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq) |
| 2403 | return false; |
| 2404 | // See paste handler for more on the fakedLastChar kludge |
| 2405 | if (cm.state.pasteIncoming && cm.state.fakedLastChar) { |
| 2406 | input.value = input.value.substring(0, input.value.length - 1); |
| 2407 | cm.state.fakedLastChar = false; |
| 2408 | } |
| 2409 | var text = input.value; |
| 2410 | // If nothing changed, bail. |
| 2411 | if (text == prevInput && !cm.somethingSelected()) return false; |
| 2412 | // Work around nonsensical selection resetting in IE9/10, and |
| 2413 | // inexplicable appearance of private area unicode characters on |
| 2414 | // some key combos in Mac (#2689). |
| 2415 | if (ie && ie_version >= 9 && cm.display.inputHasSelection === text || |
| 2416 | mac && /[\uf700-\uf7ff]/.test(text)) { |
| 2417 | resetInput(cm); |
| 2418 | return false; |
| 2419 | } |
| 2420 | |
| 2421 | var withOp = !cm.curOp; |
| 2422 | if (withOp) startOperation(cm); |
| 2423 | cm.display.shift = false; |
| 2424 | |
| 2425 | if (text.charCodeAt(0) == 0x200b && doc.sel == cm.display.selForContextMenu && !prevInput) |
| 2426 | prevInput = "\u200b"; |
| 2427 | // Find the part of the input that is actually new |
| 2428 | var same = 0, l = Math.min(prevInput.length, text.length); |
| 2429 | while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same; |
| 2430 | var inserted = text.slice(same), textLines = splitLines(inserted); |
| 2431 | |
| 2432 | // When pasing N lines into N selections, insert one line per selection |
| 2433 | var multiPaste = null; |
| 2434 | if (cm.state.pasteIncoming && doc.sel.ranges.length > 1) { |
| 2435 | if (lastCopied && lastCopied.join("\n") == inserted) |
| 2436 | multiPaste = doc.sel.ranges.length % lastCopied.length == 0 && map(lastCopied, splitLines); |
| 2437 | else if (textLines.length == doc.sel.ranges.length) |
| 2438 | multiPaste = map(textLines, function(l) { return [l]; }); |
| 2439 | } |
| 2440 | |
| 2441 | // Normal behavior is to insert the new text into every selection |
| 2442 | for (var i = doc.sel.ranges.length - 1; i >= 0; i--) { |
| 2443 | var range = doc.sel.ranges[i]; |
| 2444 | var from = range.from(), to = range.to(); |
| 2445 | // Handle deletion |
| 2446 | if (same < prevInput.length) |
| 2447 | from = Pos(from.line, from.ch - (prevInput.length - same)); |
| 2448 | // Handle overwrite |
| 2449 | else if (cm.state.overwrite && range.empty() && !cm.state.pasteIncoming) |
| 2450 | to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); |
| 2451 | var updateInput = cm.curOp.updateInput; |
| 2452 | var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines, |
| 2453 | origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"}; |
| 2454 | makeChange(cm.doc, changeEvent); |
| 2455 | signalLater(cm, "inputRead", cm, changeEvent); |
| 2456 | // When an 'electric' character is inserted, immediately trigger a reindent |
| 2457 | if (inserted && !cm.state.pasteIncoming && cm.options.electricChars && |
| 2458 | cm.options.smartIndent && range.head.ch < 100 && |
| 2459 | (!i || doc.sel.ranges[i - 1].head.line != range.head.line)) { |
| 2460 | var mode = cm.getModeAt(range.head); |
| 2461 | var end = changeEnd(changeEvent); |
| 2462 | if (mode.electricChars) { |
| 2463 | for (var j = 0; j < mode.electricChars.length; j++) |
| 2464 | if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) { |
| 2465 | indentLine(cm, end.line, "smart"); |
| 2466 | break; |
| 2467 | } |
| 2468 | } else if (mode.electricInput) { |
| 2469 | if (mode.electricInput.test(getLine(doc, end.line).text.slice(0, end.ch))) |
| 2470 | indentLine(cm, end.line, "smart"); |
| 2471 | } |
| 2472 | } |
| 2473 | } |
| 2474 | ensureCursorVisible(cm); |
| 2475 | cm.curOp.updateInput = updateInput; |
| 2476 | cm.curOp.typing = true; |
| 2477 | |
| 2478 | // Don't leave long text in the textarea, since it makes further polling slow |
| 2479 | if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = ""; |
| 2480 | else cm.display.prevInput = text; |
| 2481 | if (withOp) endOperation(cm); |
| 2482 | cm.state.pasteIncoming = cm.state.cutIncoming = false; |
| 2483 | return true; |
| 2484 | } |
| 2485 | |
| 2486 | // Reset the input to correspond to the selection (or to be empty, |
| 2487 | // when not typing and nothing is selected) |
| 2488 | function resetInput(cm, typing) { |
| 2489 | var minimal, selected, doc = cm.doc; |
| 2490 | if (cm.somethingSelected()) { |
| 2491 | cm.display.prevInput = ""; |
| 2492 | var range = doc.sel.primary(); |
| 2493 | minimal = hasCopyEvent && |
| 2494 | (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000); |
| 2495 | var content = minimal ? "-" : selected || cm.getSelection(); |
| 2496 | cm.display.input.value = content; |
| 2497 | if (cm.state.focused) selectInput(cm.display.input); |
| 2498 | if (ie && ie_version >= 9) cm.display.inputHasSelection = content; |
| 2499 | } else if (!typing) { |
| 2500 | cm.display.prevInput = cm.display.input.value = ""; |
| 2501 | if (ie && ie_version >= 9) cm.display.inputHasSelection = null; |
| 2502 | } |
| 2503 | cm.display.inaccurateSelection = minimal; |
| 2504 | } |
| 2505 | |
| 2506 | function focusInput(cm) { |
| 2507 | if (cm.options.readOnly != "nocursor" && (!mobile || activeElt() != cm.display.input)) |
| 2508 | cm.display.input.focus(); |
| 2509 | } |
| 2510 | |
| 2511 | function ensureFocus(cm) { |
| 2512 | if (!cm.state.focused) { focusInput(cm); onFocus(cm); } |
| 2513 | } |
| 2514 | |
| 2515 | function isReadOnly(cm) { |
| 2516 | return cm.options.readOnly || cm.doc.cantEdit; |
| 2517 | } |
| 2518 | |
| 2519 | // EVENT HANDLERS |
| 2520 | |
| 2521 | // Attach the necessary event handlers when initializing the editor |
| 2522 | function registerEventHandlers(cm) { |
| 2523 | var d = cm.display; |
| 2524 | on(d.scroller, "mousedown", operation(cm, onMouseDown)); |
| 2525 | // Older IE's will not fire a second mousedown for a double click |
| 2526 | if (ie && ie_version < 11) |
| 2527 | on(d.scroller, "dblclick", operation(cm, function(e) { |
| 2528 | if (signalDOMEvent(cm, e)) return; |
| 2529 | var pos = posFromMouse(cm, e); |
| 2530 | if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return; |
| 2531 | e_preventDefault(e); |
| 2532 | var word = cm.findWordAt(pos); |
| 2533 | extendSelection(cm.doc, word.anchor, word.head); |
| 2534 | })); |
| 2535 | else |
| 2536 | on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); }); |
| 2537 | // Prevent normal selection in the editor (we handle our own) |
| 2538 | on(d.lineSpace, "selectstart", function(e) { |
| 2539 | if (!eventInWidget(d, e)) e_preventDefault(e); |
| 2540 | }); |
| 2541 | // Some browsers fire contextmenu *after* opening the menu, at |
| 2542 | // which point we can't mess with it anymore. Context menu is |
| 2543 | // handled in onMouseDown for these browsers. |
| 2544 | if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); |
| 2545 | |
| 2546 | // Sync scrolling between fake scrollbars and real scrollable |
| 2547 | // area, ensure viewport is updated when scrolling. |
| 2548 | on(d.scroller, "scroll", function() { |
| 2549 | if (d.scroller.clientHeight) { |
| 2550 | setScrollTop(cm, d.scroller.scrollTop); |
| 2551 | setScrollLeft(cm, d.scroller.scrollLeft, true); |
| 2552 | signal(cm, "scroll", cm); |
| 2553 | } |
| 2554 | }); |
| 2555 | on(d.scrollbarV, "scroll", function() { |
| 2556 | if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop); |
| 2557 | }); |
| 2558 | on(d.scrollbarH, "scroll", function() { |
| 2559 | if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft); |
| 2560 | }); |
| 2561 | |
| 2562 | // Listen to wheel events in order to try and update the viewport on time. |
| 2563 | on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); |
| 2564 | on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); |
| 2565 | |
| 2566 | // Prevent clicks in the scrollbars from killing focus |
| 2567 | function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); } |
| 2568 | on(d.scrollbarH, "mousedown", reFocus); |
| 2569 | on(d.scrollbarV, "mousedown", reFocus); |
| 2570 | // Prevent wrapper from ever scrolling |
| 2571 | on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); |
| 2572 | |
| 2573 | on(d.input, "keyup", function(e) { onKeyUp.call(cm, e); }); |
| 2574 | on(d.input, "input", function() { |
| 2575 | if (ie && ie_version >= 9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null; |
| 2576 | fastPoll(cm); |
| 2577 | }); |
| 2578 | on(d.input, "keydown", operation(cm, onKeyDown)); |
| 2579 | on(d.input, "keypress", operation(cm, onKeyPress)); |
| 2580 | on(d.input, "focus", bind(onFocus, cm)); |
| 2581 | on(d.input, "blur", bind(onBlur, cm)); |
| 2582 | |
| 2583 | function drag_(e) { |
| 2584 | if (!signalDOMEvent(cm, e)) e_stop(e); |
| 2585 | } |
| 2586 | if (cm.options.dragDrop) { |
| 2587 | on(d.scroller, "dragstart", function(e){onDragStart(cm, e);}); |
| 2588 | on(d.scroller, "dragenter", drag_); |
| 2589 | on(d.scroller, "dragover", drag_); |
| 2590 | on(d.scroller, "drop", operation(cm, onDrop)); |
| 2591 | } |
| 2592 | on(d.scroller, "paste", function(e) { |
| 2593 | if (eventInWidget(d, e)) return; |
| 2594 | cm.state.pasteIncoming = true; |
| 2595 | focusInput(cm); |
| 2596 | fastPoll(cm); |
| 2597 | }); |
| 2598 | on(d.input, "paste", function() { |
| 2599 | // Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206 |
| 2600 | // Add a char to the end of textarea before paste occur so that |
| 2601 | // selection doesn't span to the end of textarea. |
| 2602 | if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) { |
| 2603 | var start = d.input.selectionStart, end = d.input.selectionEnd; |
| 2604 | d.input.value += "$"; |
| 2605 | // The selection end needs to be set before the start, otherwise there |
| 2606 | // can be an intermediate non-empty selection between the two, which |
| 2607 | // can override the middle-click paste buffer on linux and cause the |
| 2608 | // wrong thing to get pasted. |
| 2609 | d.input.selectionEnd = end; |
| 2610 | d.input.selectionStart = start; |
| 2611 | cm.state.fakedLastChar = true; |
| 2612 | } |
| 2613 | cm.state.pasteIncoming = true; |
| 2614 | fastPoll(cm); |
| 2615 | }); |
| 2616 | |
| 2617 | function prepareCopyCut(e) { |
| 2618 | if (cm.somethingSelected()) { |
| 2619 | lastCopied = cm.getSelections(); |
| 2620 | if (d.inaccurateSelection) { |
| 2621 | d.prevInput = ""; |
| 2622 | d.inaccurateSelection = false; |
| 2623 | d.input.value = lastCopied.join("\n"); |
| 2624 | selectInput(d.input); |
| 2625 | } |
| 2626 | } else { |
| 2627 | var text = [], ranges = []; |
| 2628 | for (var i = 0; i < cm.doc.sel.ranges.length; i++) { |
| 2629 | var line = cm.doc.sel.ranges[i].head.line; |
| 2630 | var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)}; |
| 2631 | ranges.push(lineRange); |
| 2632 | text.push(cm.getRange(lineRange.anchor, lineRange.head)); |
| 2633 | } |
| 2634 | if (e.type == "cut") { |
| 2635 | cm.setSelections(ranges, null, sel_dontScroll); |
| 2636 | } else { |
| 2637 | d.prevInput = ""; |
| 2638 | d.input.value = text.join("\n"); |
| 2639 | selectInput(d.input); |
| 2640 | } |
| 2641 | lastCopied = text; |
| 2642 | } |
| 2643 | if (e.type == "cut") cm.state.cutIncoming = true; |
| 2644 | } |
| 2645 | on(d.input, "cut", prepareCopyCut); |
| 2646 | on(d.input, "copy", prepareCopyCut); |
| 2647 | |
| 2648 | // Needed to handle Tab key in KHTML |
| 2649 | if (khtml) on(d.sizer, "mouseup", function() { |
| 2650 | if (activeElt() == d.input) d.input.blur(); |
| 2651 | focusInput(cm); |
| 2652 | }); |
| 2653 | } |
| 2654 | |
| 2655 | // Called when the window resizes |
| 2656 | function onResize(cm) { |
| 2657 | var d = cm.display; |
| 2658 | if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth) |
| 2659 | return; |
| 2660 | // Might be a text scaling operation, clear size caches. |
| 2661 | d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; |
| 2662 | cm.setSize(); |
| 2663 | } |
| 2664 | |
| 2665 | // MOUSE EVENTS |
| 2666 | |
| 2667 | // Return true when the given mouse event happened in a widget |
| 2668 | function eventInWidget(display, e) { |
| 2669 | for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { |
| 2670 | if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true; |
| 2671 | } |
| 2672 | } |
| 2673 | |
| 2674 | // Given a mouse event, find the corresponding position. If liberal |
| 2675 | // is false, it checks whether a gutter or scrollbar was clicked, |
| 2676 | // and returns null if it was. forRect is used by rectangular |
| 2677 | // selections, and tries to estimate a character position even for |
| 2678 | // coordinates beyond the right of the text. |
| 2679 | function posFromMouse(cm, e, liberal, forRect) { |
| 2680 | var display = cm.display; |
| 2681 | if (!liberal) { |
| 2682 | var target = e_target(e); |
| 2683 | if (target == display.scrollbarH || target == display.scrollbarV || |
| 2684 | target == display.scrollbarFiller || target == display.gutterFiller) return null; |
| 2685 | } |
| 2686 | var x, y, space = display.lineSpace.getBoundingClientRect(); |
| 2687 | // Fails unpredictably on IE[67] when mouse is dragged around quickly. |
| 2688 | try { x = e.clientX - space.left; y = e.clientY - space.top; } |
| 2689 | catch (e) { return null; } |
| 2690 | var coords = coordsChar(cm, x, y), line; |
| 2691 | if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) { |
| 2692 | var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length; |
| 2693 | coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff)); |
| 2694 | } |
| 2695 | return coords; |
| 2696 | } |
| 2697 | |
| 2698 | // A mouse down can be a single click, double click, triple click, |
| 2699 | // start of selection drag, start of text drag, new cursor |
| 2700 | // (ctrl-click), rectangle drag (alt-drag), or xwin |
| 2701 | // middle-click-paste. Or it might be a click on something we should |
| 2702 | // not interfere with, such as a scrollbar or widget. |
| 2703 | function onMouseDown(e) { |
| 2704 | if (signalDOMEvent(this, e)) return; |
| 2705 | var cm = this, display = cm.display; |
| 2706 | display.shift = e.shiftKey; |
| 2707 | |
| 2708 | if (eventInWidget(display, e)) { |
| 2709 | if (!webkit) { |
| 2710 | // Briefly turn off draggability, to allow widgets to do |
| 2711 | // normal dragging things. |
| 2712 | display.scroller.draggable = false; |
| 2713 | setTimeout(function(){display.scroller.draggable = true;}, 100); |
| 2714 | } |
| 2715 | return; |
| 2716 | } |
| 2717 | if (clickInGutter(cm, e)) return; |
| 2718 | var start = posFromMouse(cm, e); |
| 2719 | window.focus(); |
| 2720 | |
| 2721 | switch (e_button(e)) { |
| 2722 | case 1: |
| 2723 | if (start) |
| 2724 | leftButtonDown(cm, e, start); |
| 2725 | else if (e_target(e) == display.scroller) |
| 2726 | e_preventDefault(e); |
| 2727 | break; |
| 2728 | case 2: |
| 2729 | if (webkit) cm.state.lastMiddleDown = +new Date; |
| 2730 | if (start) extendSelection(cm.doc, start); |
| 2731 | setTimeout(bind(focusInput, cm), 20); |
| 2732 | e_preventDefault(e); |
| 2733 | break; |
| 2734 | case 3: |
| 2735 | if (captureRightClick) onContextMenu(cm, e); |
| 2736 | break; |
| 2737 | } |
| 2738 | } |
| 2739 | |
| 2740 | var lastClick, lastDoubleClick; |
| 2741 | function leftButtonDown(cm, e, start) { |
| 2742 | setTimeout(bind(ensureFocus, cm), 0); |
| 2743 | |
| 2744 | var now = +new Date, type; |
| 2745 | if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) { |
| 2746 | type = "triple"; |
| 2747 | } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) { |
| 2748 | type = "double"; |
| 2749 | lastDoubleClick = {time: now, pos: start}; |
| 2750 | } else { |
| 2751 | type = "single"; |
| 2752 | lastClick = {time: now, pos: start}; |
| 2753 | } |
| 2754 | |
| 2755 | var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey; |
| 2756 | if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && |
| 2757 | type == "single" && sel.contains(start) > -1 && sel.somethingSelected()) |
| 2758 | leftButtonStartDrag(cm, e, start, modifier); |
| 2759 | else |
| 2760 | leftButtonSelect(cm, e, start, type, modifier); |
| 2761 | } |
| 2762 | |
| 2763 | // Start a text drag. When it ends, see if any dragging actually |
| 2764 | // happen, and treat as a click if it didn't. |
| 2765 | function leftButtonStartDrag(cm, e, start, modifier) { |
| 2766 | var display = cm.display; |
| 2767 | var dragEnd = operation(cm, function(e2) { |
| 2768 | if (webkit) display.scroller.draggable = false; |
| 2769 | cm.state.draggingText = false; |
| 2770 | off(document, "mouseup", dragEnd); |
| 2771 | off(display.scroller, "drop", dragEnd); |
| 2772 | if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { |
| 2773 | e_preventDefault(e2); |
| 2774 | if (!modifier) |
| 2775 | extendSelection(cm.doc, start); |
| 2776 | focusInput(cm); |
| 2777 | // Work around unexplainable focus problem in IE9 (#2127) |
| 2778 | if (ie && ie_version == 9) |
| 2779 | setTimeout(function() {document.body.focus(); focusInput(cm);}, 20); |
| 2780 | } |
| 2781 | }); |
| 2782 | // Let the drag handler handle this. |
| 2783 | if (webkit) display.scroller.draggable = true; |
| 2784 | cm.state.draggingText = dragEnd; |
| 2785 | // IE's approach to draggable |
| 2786 | if (display.scroller.dragDrop) display.scroller.dragDrop(); |
| 2787 | on(document, "mouseup", dragEnd); |
| 2788 | on(display.scroller, "drop", dragEnd); |
| 2789 | } |
| 2790 | |
| 2791 | // Normal selection, as opposed to text dragging. |
| 2792 | function leftButtonSelect(cm, e, start, type, addNew) { |
| 2793 | var display = cm.display, doc = cm.doc; |
| 2794 | e_preventDefault(e); |
| 2795 | |
| 2796 | var ourRange, ourIndex, startSel = doc.sel; |
| 2797 | if (addNew && !e.shiftKey) { |
| 2798 | ourIndex = doc.sel.contains(start); |
| 2799 | if (ourIndex > -1) |
| 2800 | ourRange = doc.sel.ranges[ourIndex]; |
| 2801 | else |
| 2802 | ourRange = new Range(start, start); |
| 2803 | } else { |
| 2804 | ourRange = doc.sel.primary(); |
| 2805 | } |
| 2806 | |
| 2807 | if (e.altKey) { |
| 2808 | type = "rect"; |
| 2809 | if (!addNew) ourRange = new Range(start, start); |
| 2810 | start = posFromMouse(cm, e, true, true); |
| 2811 | ourIndex = -1; |
| 2812 | } else if (type == "double") { |
| 2813 | var word = cm.findWordAt(start); |
| 2814 | if (cm.display.shift || doc.extend) |
| 2815 | ourRange = extendRange(doc, ourRange, word.anchor, word.head); |
| 2816 | else |
| 2817 | ourRange = word; |
| 2818 | } else if (type == "triple") { |
| 2819 | var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0))); |
| 2820 | if (cm.display.shift || doc.extend) |
| 2821 | ourRange = extendRange(doc, ourRange, line.anchor, line.head); |
| 2822 | else |
| 2823 | ourRange = line; |
| 2824 | } else { |
| 2825 | ourRange = extendRange(doc, ourRange, start); |
| 2826 | } |
| 2827 | |
| 2828 | if (!addNew) { |
| 2829 | ourIndex = 0; |
| 2830 | setSelection(doc, new Selection([ourRange], 0), sel_mouse); |
| 2831 | startSel = doc.sel; |
| 2832 | } else if (ourIndex > -1) { |
| 2833 | replaceOneSelection(doc, ourIndex, ourRange, sel_mouse); |
| 2834 | } else { |
| 2835 | ourIndex = doc.sel.ranges.length; |
| 2836 | setSelection(doc, normalizeSelection(doc.sel.ranges.concat([ourRange]), ourIndex), |
| 2837 | {scroll: false, origin: "*mouse"}); |
| 2838 | } |
| 2839 | |
| 2840 | var lastPos = start; |
| 2841 | function extendTo(pos) { |
| 2842 | if (cmp(lastPos, pos) == 0) return; |
| 2843 | lastPos = pos; |
| 2844 | |
| 2845 | if (type == "rect") { |
| 2846 | var ranges = [], tabSize = cm.options.tabSize; |
| 2847 | var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize); |
| 2848 | var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize); |
| 2849 | var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol); |
| 2850 | for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line)); |
| 2851 | line <= end; line++) { |
| 2852 | var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize); |
| 2853 | if (left == right) |
| 2854 | ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); |
| 2855 | else if (text.length > leftPos) |
| 2856 | ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); |
| 2857 | } |
| 2858 | if (!ranges.length) ranges.push(new Range(start, start)); |
| 2859 | setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), |
| 2860 | {origin: "*mouse", scroll: false}); |
| 2861 | cm.scrollIntoView(pos); |
| 2862 | } else { |
| 2863 | var oldRange = ourRange; |
| 2864 | var anchor = oldRange.anchor, head = pos; |
| 2865 | if (type != "single") { |
| 2866 | if (type == "double") |
| 2867 | var range = cm.findWordAt(pos); |
| 2868 | else |
| 2869 | var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0))); |
| 2870 | if (cmp(range.anchor, anchor) > 0) { |
| 2871 | head = range.head; |
| 2872 | anchor = minPos(oldRange.from(), range.anchor); |
| 2873 | } else { |
| 2874 | head = range.anchor; |
| 2875 | anchor = maxPos(oldRange.to(), range.head); |
| 2876 | } |
| 2877 | } |
| 2878 | var ranges = startSel.ranges.slice(0); |
| 2879 | ranges[ourIndex] = new Range(clipPos(doc, anchor), head); |
| 2880 | setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse); |
| 2881 | } |
| 2882 | } |
| 2883 | |
| 2884 | var editorSize = display.wrapper.getBoundingClientRect(); |
| 2885 | // Used to ensure timeout re-tries don't fire when another extend |
| 2886 | // happened in the meantime (clearTimeout isn't reliable -- at |
| 2887 | // least on Chrome, the timeouts still happen even when cleared, |
| 2888 | // if the clear happens after their scheduled firing time). |
| 2889 | var counter = 0; |
| 2890 | |
| 2891 | function extend(e) { |
| 2892 | var curCount = ++counter; |
| 2893 | var cur = posFromMouse(cm, e, true, type == "rect"); |
| 2894 | if (!cur) return; |
| 2895 | if (cmp(cur, lastPos) != 0) { |
| 2896 | ensureFocus(cm); |
| 2897 | extendTo(cur); |
| 2898 | var visible = visibleLines(display, doc); |
| 2899 | if (cur.line >= visible.to || cur.line < visible.from) |
| 2900 | setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); |
| 2901 | } else { |
| 2902 | var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; |
| 2903 | if (outside) setTimeout(operation(cm, function() { |
| 2904 | if (counter != curCount) return; |
| 2905 | display.scroller.scrollTop += outside; |
| 2906 | extend(e); |
| 2907 | }), 50); |
| 2908 | } |
| 2909 | } |
| 2910 | |
| 2911 | function done(e) { |
| 2912 | counter = Infinity; |
| 2913 | e_preventDefault(e); |
| 2914 | focusInput(cm); |
| 2915 | off(document, "mousemove", move); |
| 2916 | off(document, "mouseup", up); |
| 2917 | doc.history.lastSelOrigin = null; |
| 2918 | } |
| 2919 | |
| 2920 | var move = operation(cm, function(e) { |
| 2921 | if (!e_button(e)) done(e); |
| 2922 | else extend(e); |
| 2923 | }); |
| 2924 | var up = operation(cm, done); |
| 2925 | on(document, "mousemove", move); |
| 2926 | on(document, "mouseup", up); |
| 2927 | } |
| 2928 | |
| 2929 | // Determines whether an event happened in the gutter, and fires the |
| 2930 | // handlers for the corresponding event. |
| 2931 | function gutterEvent(cm, e, type, prevent, signalfn) { |
| 2932 | try { var mX = e.clientX, mY = e.clientY; } |
| 2933 | catch(e) { return false; } |
| 2934 | if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false; |
| 2935 | if (prevent) e_preventDefault(e); |
| 2936 | |
| 2937 | var display = cm.display; |
| 2938 | var lineBox = display.lineDiv.getBoundingClientRect(); |
| 2939 | |
| 2940 | if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e); |
| 2941 | mY -= lineBox.top - display.viewOffset; |
| 2942 | |
| 2943 | for (var i = 0; i < cm.options.gutters.length; ++i) { |
| 2944 | var g = display.gutters.childNodes[i]; |
| 2945 | if (g && g.getBoundingClientRect().right >= mX) { |
| 2946 | var line = lineAtHeight(cm.doc, mY); |
| 2947 | var gutter = cm.options.gutters[i]; |
| 2948 | signalfn(cm, type, cm, line, gutter, e); |
| 2949 | return e_defaultPrevented(e); |
| 2950 | } |
| 2951 | } |
| 2952 | } |
| 2953 | |
| 2954 | function clickInGutter(cm, e) { |
| 2955 | return gutterEvent(cm, e, "gutterClick", true, signalLater); |
| 2956 | } |
| 2957 | |
| 2958 | // Kludge to work around strange IE behavior where it'll sometimes |
| 2959 | // re-fire a series of drag-related events right after the drop (#1551) |
| 2960 | var lastDrop = 0; |
| 2961 | |
| 2962 | function onDrop(e) { |
| 2963 | var cm = this; |
| 2964 | if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) |
| 2965 | return; |
| 2966 | e_preventDefault(e); |
| 2967 | if (ie) lastDrop = +new Date; |
| 2968 | var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; |
| 2969 | if (!pos || isReadOnly(cm)) return; |
| 2970 | // Might be a file drop, in which case we simply extract the text |
| 2971 | // and insert it. |
| 2972 | if (files && files.length && window.FileReader && window.File) { |
| 2973 | var n = files.length, text = Array(n), read = 0; |
| 2974 | var loadFile = function(file, i) { |
| 2975 | var reader = new FileReader; |
| 2976 | reader.onload = operation(cm, function() { |
| 2977 | text[i] = reader.result; |
| 2978 | if (++read == n) { |
| 2979 | pos = clipPos(cm.doc, pos); |
| 2980 | var change = {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}; |
| 2981 | makeChange(cm.doc, change); |
| 2982 | setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change))); |
| 2983 | } |
| 2984 | }); |
| 2985 | reader.readAsText(file); |
| 2986 | }; |
| 2987 | for (var i = 0; i < n; ++i) loadFile(files[i], i); |
| 2988 | } else { // Normal drop |
| 2989 | // Don't do a replace if the drop happened inside of the selected text. |
| 2990 | if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) { |
| 2991 | cm.state.draggingText(e); |
| 2992 | // Ensure the editor is re-focused |
| 2993 | setTimeout(bind(focusInput, cm), 20); |
| 2994 | return; |
| 2995 | } |
| 2996 | try { |
| 2997 | var text = e.dataTransfer.getData("Text"); |
| 2998 | if (text) { |
| 2999 | if (cm.state.draggingText && !(mac ? e.metaKey : e.ctrlKey)) |
| 3000 | var selected = cm.listSelections(); |
| 3001 | setSelectionNoUndo(cm.doc, simpleSelection(pos, pos)); |
| 3002 | if (selected) for (var i = 0; i < selected.length; ++i) |
| 3003 | replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag"); |
| 3004 | cm.replaceSelection(text, "around", "paste"); |
| 3005 | focusInput(cm); |
| 3006 | } |
| 3007 | } |
| 3008 | catch(e){} |
| 3009 | } |
| 3010 | } |
| 3011 | |
| 3012 | function onDragStart(cm, e) { |
| 3013 | if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; } |
| 3014 | if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return; |
| 3015 | |
| 3016 | e.dataTransfer.setData("Text", cm.getSelection()); |
| 3017 | |
| 3018 | // Use dummy image instead of default browsers image. |
| 3019 | // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. |
| 3020 | if (e.dataTransfer.setDragImage && !safari) { |
| 3021 | var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); |
| 3022 | img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="; |
| 3023 | if (presto) { |
| 3024 | img.width = img.height = 1; |
| 3025 | cm.display.wrapper.appendChild(img); |
| 3026 | // Force a relayout, or Opera won't use our image for some obscure reason |
| 3027 | img._top = img.offsetTop; |
| 3028 | } |
| 3029 | e.dataTransfer.setDragImage(img, 0, 0); |
| 3030 | if (presto) img.parentNode.removeChild(img); |
| 3031 | } |
| 3032 | } |
| 3033 | |
| 3034 | // SCROLL EVENTS |
| 3035 | |
| 3036 | // Sync the scrollable area and scrollbars, ensure the viewport |
| 3037 | // covers the visible area. |
| 3038 | function setScrollTop(cm, val) { |
| 3039 | if (Math.abs(cm.doc.scrollTop - val) < 2) return; |
| 3040 | cm.doc.scrollTop = val; |
| 3041 | if (!gecko) updateDisplaySimple(cm, {top: val}); |
| 3042 | if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; |
| 3043 | if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val; |
| 3044 | if (gecko) updateDisplaySimple(cm); |
| 3045 | startWorker(cm, 100); |
| 3046 | } |
| 3047 | // Sync scroller and scrollbar, ensure the gutter elements are |
| 3048 | // aligned. |
| 3049 | function setScrollLeft(cm, val, isScroller) { |
| 3050 | if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return; |
| 3051 | val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth); |
| 3052 | cm.doc.scrollLeft = val; |
| 3053 | alignHorizontally(cm); |
| 3054 | if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val; |
| 3055 | if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val; |
| 3056 | } |
| 3057 | |
| 3058 | // Since the delta values reported on mouse wheel events are |
| 3059 | // unstandardized between browsers and even browser versions, and |
| 3060 | // generally horribly unpredictable, this code starts by measuring |
| 3061 | // the scroll effect that the first few mouse wheel events have, |
| 3062 | // and, from that, detects the way it can convert deltas to pixel |
| 3063 | // offsets afterwards. |
| 3064 | // |
| 3065 | // The reason we want to know the amount a wheel event will scroll |
| 3066 | // is that it gives us a chance to update the display before the |
| 3067 | // actual scrolling happens, reducing flickering. |
| 3068 | |
| 3069 | var wheelSamples = 0, wheelPixelsPerUnit = null; |
| 3070 | // Fill in a browser-detected starting value on browsers where we |
| 3071 | // know one. These don't have to be accurate -- the result of them |
| 3072 | // being wrong would just be a slight flicker on the first wheel |
| 3073 | // scroll (if it is large enough). |
| 3074 | if (ie) wheelPixelsPerUnit = -.53; |
| 3075 | else if (gecko) wheelPixelsPerUnit = 15; |
| 3076 | else if (chrome) wheelPixelsPerUnit = -.7; |
| 3077 | else if (safari) wheelPixelsPerUnit = -1/3; |
| 3078 | |
| 3079 | function onScrollWheel(cm, e) { |
| 3080 | var dx = e.wheelDeltaX, dy = e.wheelDeltaY; |
| 3081 | if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; |
| 3082 | if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; |
| 3083 | else if (dy == null) dy = e.wheelDelta; |
| 3084 | |
| 3085 | var display = cm.display, scroll = display.scroller; |
| 3086 | // Quit if there's nothing to scroll here |
| 3087 | if (!(dx && scroll.scrollWidth > scroll.clientWidth || |
| 3088 | dy && scroll.scrollHeight > scroll.clientHeight)) return; |
| 3089 | |
| 3090 | // Webkit browsers on OS X abort momentum scrolls when the target |
| 3091 | // of the scroll event is removed from the scrollable element. |
| 3092 | // This hack (see related code in patchDisplay) makes sure the |
| 3093 | // element is kept around. |
| 3094 | if (dy && mac && webkit) { |
| 3095 | outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) { |
| 3096 | for (var i = 0; i < view.length; i++) { |
| 3097 | if (view[i].node == cur) { |
| 3098 | cm.display.currentWheelTarget = cur; |
| 3099 | break outer; |
| 3100 | } |
| 3101 | } |
| 3102 | } |
| 3103 | } |
| 3104 | |
| 3105 | // On some browsers, horizontal scrolling will cause redraws to |
| 3106 | // happen before the gutter has been realigned, causing it to |
| 3107 | // wriggle around in a most unseemly way. When we have an |
| 3108 | // estimated pixels/delta value, we just handle horizontal |
| 3109 | // scrolling entirely here. It'll be slightly off from native, but |
| 3110 | // better than glitching out. |
| 3111 | if (dx && !gecko && !presto && wheelPixelsPerUnit != null) { |
| 3112 | if (dy) |
| 3113 | setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); |
| 3114 | setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); |
| 3115 | e_preventDefault(e); |
| 3116 | display.wheelStartX = null; // Abort measurement, if in progress |
| 3117 | return; |
| 3118 | } |
| 3119 | |
| 3120 | // 'Project' the visible viewport to cover the area that is being |
| 3121 | // scrolled into view (if we know enough to estimate it). |
| 3122 | if (dy && wheelPixelsPerUnit != null) { |
| 3123 | var pixels = dy * wheelPixelsPerUnit; |
| 3124 | var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; |
| 3125 | if (pixels < 0) top = Math.max(0, top + pixels - 50); |
| 3126 | else bot = Math.min(cm.doc.height, bot + pixels + 50); |
| 3127 | updateDisplaySimple(cm, {top: top, bottom: bot}); |
| 3128 | } |
| 3129 | |
| 3130 | if (wheelSamples < 20) { |
| 3131 | if (display.wheelStartX == null) { |
| 3132 | display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; |
| 3133 | display.wheelDX = dx; display.wheelDY = dy; |
| 3134 | setTimeout(function() { |
| 3135 | if (display.wheelStartX == null) return; |
| 3136 | var movedX = scroll.scrollLeft - display.wheelStartX; |
| 3137 | var movedY = scroll.scrollTop - display.wheelStartY; |
| 3138 | var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || |
| 3139 | (movedX && display.wheelDX && movedX / display.wheelDX); |
| 3140 | display.wheelStartX = display.wheelStartY = null; |
| 3141 | if (!sample) return; |
| 3142 | wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); |
| 3143 | ++wheelSamples; |
| 3144 | }, 200); |
| 3145 | } else { |
| 3146 | display.wheelDX += dx; display.wheelDY += dy; |
| 3147 | } |
| 3148 | } |
| 3149 | } |
| 3150 | |
| 3151 | // KEY EVENTS |
| 3152 | |
| 3153 | // Run a handler that was bound to a key. |
| 3154 | function doHandleBinding(cm, bound, dropShift) { |
| 3155 | if (typeof bound == "string") { |
| 3156 | bound = commands[bound]; |
| 3157 | if (!bound) return false; |
| 3158 | } |
| 3159 | // Ensure previous input has been read, so that the handler sees a |
| 3160 | // consistent view of the document |
| 3161 | if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false; |
| 3162 | var prevShift = cm.display.shift, done = false; |
| 3163 | try { |
| 3164 | if (isReadOnly(cm)) cm.state.suppressEdits = true; |
| 3165 | if (dropShift) cm.display.shift = false; |
| 3166 | done = bound(cm) != Pass; |
| 3167 | } finally { |
| 3168 | cm.display.shift = prevShift; |
| 3169 | cm.state.suppressEdits = false; |
| 3170 | } |
| 3171 | return done; |
| 3172 | } |
| 3173 | |
| 3174 | function lookupKeyForEditor(cm, name, handle) { |
| 3175 | for (var i = 0; i < cm.state.keyMaps.length; i++) { |
| 3176 | var result = lookupKey(name, cm.state.keyMaps[i], handle); |
| 3177 | if (result) return result; |
| 3178 | } |
| 3179 | return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle)) |
| 3180 | || lookupKey(name, cm.options.keyMap, handle); |
| 3181 | } |
| 3182 | |
| 3183 | var stopSeq = new Delayed; |
| 3184 | function dispatchKey(cm, name, e, handle) { |
| 3185 | var seq = cm.state.keySeq; |
| 3186 | if (seq) { |
| 3187 | if (isModifierKey(name)) return "handled"; |
| 3188 | stopSeq.set(50, function() { |
| 3189 | if (cm.state.keySeq == seq) { |
| 3190 | cm.state.keySeq = null; |
| 3191 | resetInput(cm); |
| 3192 | } |
| 3193 | }); |
| 3194 | name = seq + " " + name; |
| 3195 | } |
| 3196 | var result = lookupKeyForEditor(cm, name, handle); |
| 3197 | |
| 3198 | if (result == "multi") |
| 3199 | cm.state.keySeq = name; |
| 3200 | if (result == "handled") |
| 3201 | signalLater(cm, "keyHandled", cm, name, e); |
| 3202 | |
| 3203 | if (result == "handled" || result == "multi") { |
| 3204 | e_preventDefault(e); |
| 3205 | restartBlink(cm); |
| 3206 | } |
| 3207 | |
| 3208 | if (seq && !result && /\'$/.test(name)) { |
| 3209 | e_preventDefault(e); |
| 3210 | return true; |
| 3211 | } |
| 3212 | return !!result; |
| 3213 | } |
| 3214 | |
| 3215 | // Handle a key from the keydown event. |
| 3216 | function handleKeyBinding(cm, e) { |
| 3217 | var name = keyName(e, true); |
| 3218 | if (!name) return false; |
| 3219 | |
| 3220 | if (e.shiftKey && !cm.state.keySeq) { |
| 3221 | // First try to resolve full name (including 'Shift-'). Failing |
| 3222 | // that, see if there is a cursor-motion command (starting with |
| 3223 | // 'go') bound to the keyname without 'Shift-'. |
| 3224 | return dispatchKey(cm, "Shift-" + name, e, function(b) {return doHandleBinding(cm, b, true);}) |
| 3225 | || dispatchKey(cm, name, e, function(b) { |
| 3226 | if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) |
| 3227 | return doHandleBinding(cm, b); |
| 3228 | }); |
| 3229 | } else { |
| 3230 | return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); }); |
| 3231 | } |
| 3232 | } |
| 3233 | |
| 3234 | // Handle a key from the keypress event |
| 3235 | function handleCharBinding(cm, e, ch) { |
| 3236 | return dispatchKey(cm, "'" + ch + "'", e, |
| 3237 | function(b) { return doHandleBinding(cm, b, true); }); |
| 3238 | } |
| 3239 | |
| 3240 | var lastStoppedKey = null; |
| 3241 | function onKeyDown(e) { |
| 3242 | var cm = this; |
| 3243 | ensureFocus(cm); |
| 3244 | if (signalDOMEvent(cm, e)) return; |
| 3245 | // IE does strange things with escape. |
| 3246 | if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false; |
| 3247 | var code = e.keyCode; |
| 3248 | cm.display.shift = code == 16 || e.shiftKey; |
| 3249 | var handled = handleKeyBinding(cm, e); |
| 3250 | if (presto) { |
| 3251 | lastStoppedKey = handled ? code : null; |
| 3252 | // Opera has no cut event... we try to at least catch the key combo |
| 3253 | if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) |
| 3254 | cm.replaceSelection("", null, "cut"); |
| 3255 | } |
| 3256 | |
| 3257 | // Turn mouse into crosshair when Alt is held on Mac. |
| 3258 | if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) |
| 3259 | showCrossHair(cm); |
| 3260 | } |
| 3261 | |
| 3262 | function showCrossHair(cm) { |
| 3263 | var lineDiv = cm.display.lineDiv; |
| 3264 | addClass(lineDiv, "CodeMirror-crosshair"); |
| 3265 | |
| 3266 | function up(e) { |
| 3267 | if (e.keyCode == 18 || !e.altKey) { |
| 3268 | rmClass(lineDiv, "CodeMirror-crosshair"); |
| 3269 | off(document, "keyup", up); |
| 3270 | off(document, "mouseover", up); |
| 3271 | } |
| 3272 | } |
| 3273 | on(document, "keyup", up); |
| 3274 | on(document, "mouseover", up); |
| 3275 | } |
| 3276 | |
| 3277 | function onKeyUp(e) { |
| 3278 | if (e.keyCode == 16) this.doc.sel.shift = false; |
| 3279 | signalDOMEvent(this, e); |
| 3280 | } |
| 3281 | |
| 3282 | function onKeyPress(e) { |
| 3283 | var cm = this; |
| 3284 | if (signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return; |
| 3285 | var keyCode = e.keyCode, charCode = e.charCode; |
| 3286 | if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} |
| 3287 | if (((presto && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return; |
| 3288 | var ch = String.fromCharCode(charCode == null ? keyCode : charCode); |
| 3289 | if (handleCharBinding(cm, e, ch)) return; |
| 3290 | if (ie && ie_version >= 9) cm.display.inputHasSelection = null; |
| 3291 | fastPoll(cm); |
| 3292 | } |
| 3293 | |
| 3294 | // FOCUS/BLUR EVENTS |
| 3295 | |
| 3296 | function onFocus(cm) { |
| 3297 | if (cm.options.readOnly == "nocursor") return; |
| 3298 | if (!cm.state.focused) { |
| 3299 | signal(cm, "focus", cm); |
| 3300 | cm.state.focused = true; |
| 3301 | addClass(cm.display.wrapper, "CodeMirror-focused"); |
| 3302 | // The prevInput test prevents this from firing when a context |
| 3303 | // menu is closed (since the resetInput would kill the |
| 3304 | // select-all detection hack) |
| 3305 | if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) { |
| 3306 | resetInput(cm); |
| 3307 | if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730 |
| 3308 | } |
| 3309 | } |
| 3310 | slowPoll(cm); |
| 3311 | restartBlink(cm); |
| 3312 | } |
| 3313 | function onBlur(cm) { |
| 3314 | if (cm.state.focused) { |
| 3315 | signal(cm, "blur", cm); |
| 3316 | cm.state.focused = false; |
| 3317 | rmClass(cm.display.wrapper, "CodeMirror-focused"); |
| 3318 | } |
| 3319 | clearInterval(cm.display.blinker); |
| 3320 | setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150); |
| 3321 | } |
| 3322 | |
| 3323 | // CONTEXT MENU HANDLING |
| 3324 | |
| 3325 | // To make the context menu work, we need to briefly unhide the |
| 3326 | // textarea (making it as unobtrusive as possible) to let the |
| 3327 | // right-click take effect on it. |
| 3328 | function onContextMenu(cm, e) { |
| 3329 | if (signalDOMEvent(cm, e, "contextmenu")) return; |
| 3330 | var display = cm.display; |
| 3331 | if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return; |
| 3332 | |
| 3333 | var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; |
| 3334 | if (!pos || presto) return; // Opera is difficult. |
| 3335 | |
| 3336 | // Reset the current text selection only if the click is done outside of the selection |
| 3337 | // and 'resetSelectionOnContextMenu' option is true. |
| 3338 | var reset = cm.options.resetSelectionOnContextMenu; |
| 3339 | if (reset && cm.doc.sel.contains(pos) == -1) |
| 3340 | operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); |
| 3341 | |
| 3342 | var oldCSS = display.input.style.cssText; |
| 3343 | display.inputDiv.style.position = "absolute"; |
| 3344 | display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + |
| 3345 | "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " + |
| 3346 | (ie ? "rgba(255, 255, 255, .05)" : "transparent") + |
| 3347 | "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);"; |
| 3348 | if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712) |
| 3349 | focusInput(cm); |
| 3350 | if (webkit) window.scrollTo(null, oldScrollY); |
| 3351 | resetInput(cm); |
| 3352 | // Adds "Select all" to context menu in FF |
| 3353 | if (!cm.somethingSelected()) display.input.value = display.prevInput = " "; |
| 3354 | display.selForContextMenu = cm.doc.sel; |
| 3355 | clearTimeout(display.detectingSelectAll); |
| 3356 | |
| 3357 | // Select-all will be greyed out if there's nothing to select, so |
| 3358 | // this adds a zero-width space so that we can later check whether |
| 3359 | // it got selected. |
| 3360 | function prepareSelectAllHack() { |
| 3361 | if (display.input.selectionStart != null) { |
| 3362 | var selected = cm.somethingSelected(); |
| 3363 | var extval = display.input.value = "\u200b" + (selected ? display.input.value : ""); |
| 3364 | display.prevInput = selected ? "" : "\u200b"; |
| 3365 | display.input.selectionStart = 1; display.input.selectionEnd = extval.length; |
| 3366 | // Re-set this, in case some other handler touched the |
| 3367 | // selection in the meantime. |
| 3368 | display.selForContextMenu = cm.doc.sel; |
| 3369 | } |
| 3370 | } |
| 3371 | function rehide() { |
| 3372 | display.inputDiv.style.position = "relative"; |
| 3373 | display.input.style.cssText = oldCSS; |
| 3374 | if (ie && ie_version < 9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; |
| 3375 | slowPoll(cm); |
| 3376 | |
| 3377 | // Try to detect the user choosing select-all |
| 3378 | if (display.input.selectionStart != null) { |
| 3379 | if (!ie || (ie && ie_version < 9)) prepareSelectAllHack(); |
| 3380 | var i = 0, poll = function() { |
| 3381 | if (display.selForContextMenu == cm.doc.sel && display.input.selectionStart == 0) |
| 3382 | operation(cm, commands.selectAll)(cm); |
| 3383 | else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500); |
| 3384 | else resetInput(cm); |
| 3385 | }; |
| 3386 | display.detectingSelectAll = setTimeout(poll, 200); |
| 3387 | } |
| 3388 | } |
| 3389 | |
| 3390 | if (ie && ie_version >= 9) prepareSelectAllHack(); |
| 3391 | if (captureRightClick) { |
| 3392 | e_stop(e); |
| 3393 | var mouseup = function() { |
| 3394 | off(window, "mouseup", mouseup); |
| 3395 | setTimeout(rehide, 20); |
| 3396 | }; |
| 3397 | on(window, "mouseup", mouseup); |
| 3398 | } else { |
| 3399 | setTimeout(rehide, 50); |
| 3400 | } |
| 3401 | } |
| 3402 | |
| 3403 | function contextMenuInGutter(cm, e) { |
| 3404 | if (!hasHandler(cm, "gutterContextMenu")) return false; |
| 3405 | return gutterEvent(cm, e, "gutterContextMenu", false, signal); |
| 3406 | } |
| 3407 | |
| 3408 | // UPDATING |
| 3409 | |
| 3410 | // Compute the position of the end of a change (its 'to' property |
| 3411 | // refers to the pre-change end). |
| 3412 | var changeEnd = CodeMirror.changeEnd = function(change) { |
| 3413 | if (!change.text) return change.to; |
| 3414 | return Pos(change.from.line + change.text.length - 1, |
| 3415 | lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)); |
| 3416 | }; |
| 3417 | |
| 3418 | // Adjust a position to refer to the post-change position of the |
| 3419 | // same text, or the end of the change if the change covers it. |
| 3420 | function adjustForChange(pos, change) { |
| 3421 | if (cmp(pos, change.from) < 0) return pos; |
| 3422 | if (cmp(pos, change.to) <= 0) return changeEnd(change); |
| 3423 | |
| 3424 | var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; |
| 3425 | if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch; |
| 3426 | return Pos(line, ch); |
| 3427 | } |
| 3428 | |
| 3429 | function computeSelAfterChange(doc, change) { |
| 3430 | var out = []; |
| 3431 | for (var i = 0; i < doc.sel.ranges.length; i++) { |
| 3432 | var range = doc.sel.ranges[i]; |
| 3433 | out.push(new Range(adjustForChange(range.anchor, change), |
| 3434 | adjustForChange(range.head, change))); |
| 3435 | } |
| 3436 | return normalizeSelection(out, doc.sel.primIndex); |
| 3437 | } |
| 3438 | |
| 3439 | function offsetPos(pos, old, nw) { |
| 3440 | if (pos.line == old.line) |
| 3441 | return Pos(nw.line, pos.ch - old.ch + nw.ch); |
| 3442 | else |
| 3443 | return Pos(nw.line + (pos.line - old.line), pos.ch); |
| 3444 | } |
| 3445 | |
| 3446 | // Used by replaceSelections to allow moving the selection to the |
| 3447 | // start or around the replaced test. Hint may be "start" or "around". |
| 3448 | function computeReplacedSel(doc, changes, hint) { |
| 3449 | var out = []; |
| 3450 | var oldPrev = Pos(doc.first, 0), newPrev = oldPrev; |
| 3451 | for (var i = 0; i < changes.length; i++) { |
| 3452 | var change = changes[i]; |
| 3453 | var from = offsetPos(change.from, oldPrev, newPrev); |
| 3454 | var to = offsetPos(changeEnd(change), oldPrev, newPrev); |
| 3455 | oldPrev = change.to; |
| 3456 | newPrev = to; |
| 3457 | if (hint == "around") { |
| 3458 | var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0; |
| 3459 | out[i] = new Range(inv ? to : from, inv ? from : to); |
| 3460 | } else { |
| 3461 | out[i] = new Range(from, from); |
| 3462 | } |
| 3463 | } |
| 3464 | return new Selection(out, doc.sel.primIndex); |
| 3465 | } |
| 3466 | |
| 3467 | // Allow "beforeChange" event handlers to influence a change |
| 3468 | function filterChange(doc, change, update) { |
| 3469 | var obj = { |
| 3470 | canceled: false, |
| 3471 | from: change.from, |
| 3472 | to: change.to, |
| 3473 | text: change.text, |
| 3474 | origin: change.origin, |
| 3475 | cancel: function() { this.canceled = true; } |
| 3476 | }; |
| 3477 | if (update) obj.update = function(from, to, text, origin) { |
| 3478 | if (from) this.from = clipPos(doc, from); |
| 3479 | if (to) this.to = clipPos(doc, to); |
| 3480 | if (text) this.text = text; |
| 3481 | if (origin !== undefined) this.origin = origin; |
| 3482 | }; |
| 3483 | signal(doc, "beforeChange", doc, obj); |
| 3484 | if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj); |
| 3485 | |
| 3486 | if (obj.canceled) return null; |
| 3487 | return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}; |
| 3488 | } |
| 3489 | |
| 3490 | // Apply a change to a document, and add it to the document's |
| 3491 | // history, and propagating it to all linked documents. |
| 3492 | function makeChange(doc, change, ignoreReadOnly) { |
| 3493 | if (doc.cm) { |
| 3494 | if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly); |
| 3495 | if (doc.cm.state.suppressEdits) return; |
| 3496 | } |
| 3497 | |
| 3498 | if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { |
| 3499 | change = filterChange(doc, change, true); |
| 3500 | if (!change) return; |
| 3501 | } |
| 3502 | |
| 3503 | // Possibly split or suppress the update based on the presence |
| 3504 | // of read-only spans in its range. |
| 3505 | var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); |
| 3506 | if (split) { |
| 3507 | for (var i = split.length - 1; i >= 0; --i) |
| 3508 | makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text}); |
| 3509 | } else { |
| 3510 | makeChangeInner(doc, change); |
| 3511 | } |
| 3512 | } |
| 3513 | |
| 3514 | function makeChangeInner(doc, change) { |
| 3515 | if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return; |
| 3516 | var selAfter = computeSelAfterChange(doc, change); |
| 3517 | addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); |
| 3518 | |
| 3519 | makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); |
| 3520 | var rebased = []; |
| 3521 | |
| 3522 | linkedDocs(doc, function(doc, sharedHist) { |
| 3523 | if (!sharedHist && indexOf(rebased, doc.history) == -1) { |
| 3524 | rebaseHist(doc.history, change); |
| 3525 | rebased.push(doc.history); |
| 3526 | } |
| 3527 | makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); |
| 3528 | }); |
| 3529 | } |
| 3530 | |
| 3531 | // Revert a change stored in a document's history. |
| 3532 | function makeChangeFromHistory(doc, type, allowSelectionOnly) { |
| 3533 | if (doc.cm && doc.cm.state.suppressEdits) return; |
| 3534 | |
| 3535 | var hist = doc.history, event, selAfter = doc.sel; |
| 3536 | var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done; |
| 3537 | |
| 3538 | // Verify that there is a useable event (so that ctrl-z won't |
| 3539 | // needlessly clear selection events) |
| 3540 | for (var i = 0; i < source.length; i++) { |
| 3541 | event = source[i]; |
| 3542 | if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) |
| 3543 | break; |
| 3544 | } |
| 3545 | if (i == source.length) return; |
| 3546 | hist.lastOrigin = hist.lastSelOrigin = null; |
| 3547 | |
| 3548 | for (;;) { |
| 3549 | event = source.pop(); |
| 3550 | if (event.ranges) { |
| 3551 | pushSelectionToHistory(event, dest); |
| 3552 | if (allowSelectionOnly && !event.equals(doc.sel)) { |
| 3553 | setSelection(doc, event, {clearRedo: false}); |
| 3554 | return; |
| 3555 | } |
| 3556 | selAfter = event; |
| 3557 | } |
| 3558 | else break; |
| 3559 | } |
| 3560 | |
| 3561 | // Build up a reverse change object to add to the opposite history |
| 3562 | // stack (redo when undoing, and vice versa). |
| 3563 | var antiChanges = []; |
| 3564 | pushSelectionToHistory(selAfter, dest); |
| 3565 | dest.push({changes: antiChanges, generation: hist.generation}); |
| 3566 | hist.generation = event.generation || ++hist.maxGeneration; |
| 3567 | |
| 3568 | var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); |
| 3569 | |
| 3570 | for (var i = event.changes.length - 1; i >= 0; --i) { |
| 3571 | var change = event.changes[i]; |
| 3572 | change.origin = type; |
| 3573 | if (filter && !filterChange(doc, change, false)) { |
| 3574 | source.length = 0; |
| 3575 | return; |
| 3576 | } |
| 3577 | |
| 3578 | antiChanges.push(historyChangeFromChange(doc, change)); |
| 3579 | |
| 3580 | var after = i ? computeSelAfterChange(doc, change) : lst(source); |
| 3581 | makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); |
| 3582 | if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); |
| 3583 | var rebased = []; |
| 3584 | |
| 3585 | // Propagate to the linked documents |
| 3586 | linkedDocs(doc, function(doc, sharedHist) { |
| 3587 | if (!sharedHist && indexOf(rebased, doc.history) == -1) { |
| 3588 | rebaseHist(doc.history, change); |
| 3589 | rebased.push(doc.history); |
| 3590 | } |
| 3591 | makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); |
| 3592 | }); |
| 3593 | } |
| 3594 | } |
| 3595 | |
| 3596 | // Sub-views need their line numbers shifted when text is added |
| 3597 | // above or below them in the parent document. |
| 3598 | function shiftDoc(doc, distance) { |
| 3599 | if (distance == 0) return; |
| 3600 | doc.first += distance; |
| 3601 | doc.sel = new Selection(map(doc.sel.ranges, function(range) { |
| 3602 | return new Range(Pos(range.anchor.line + distance, range.anchor.ch), |
| 3603 | Pos(range.head.line + distance, range.head.ch)); |
| 3604 | }), doc.sel.primIndex); |
| 3605 | if (doc.cm) { |
| 3606 | regChange(doc.cm, doc.first, doc.first - distance, distance); |
| 3607 | for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) |
| 3608 | regLineChange(doc.cm, l, "gutter"); |
| 3609 | } |
| 3610 | } |
| 3611 | |
| 3612 | // More lower-level change function, handling only a single document |
| 3613 | // (not linked ones). |
| 3614 | function makeChangeSingleDoc(doc, change, selAfter, spans) { |
| 3615 | if (doc.cm && !doc.cm.curOp) |
| 3616 | return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans); |
| 3617 | |
| 3618 | if (change.to.line < doc.first) { |
| 3619 | shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); |
| 3620 | return; |
| 3621 | } |
| 3622 | if (change.from.line > doc.lastLine()) return; |
| 3623 | |
| 3624 | // Clip the change to the size of this doc |
| 3625 | if (change.from.line < doc.first) { |
| 3626 | var shift = change.text.length - 1 - (doc.first - change.from.line); |
| 3627 | shiftDoc(doc, shift); |
| 3628 | change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), |
| 3629 | text: [lst(change.text)], origin: change.origin}; |
| 3630 | } |
| 3631 | var last = doc.lastLine(); |
| 3632 | if (change.to.line > last) { |
| 3633 | change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), |
| 3634 | text: [change.text[0]], origin: change.origin}; |
| 3635 | } |
| 3636 | |
| 3637 | change.removed = getBetween(doc, change.from, change.to); |
| 3638 | |
| 3639 | if (!selAfter) selAfter = computeSelAfterChange(doc, change); |
| 3640 | if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans); |
| 3641 | else updateDoc(doc, change, spans); |
| 3642 | setSelectionNoUndo(doc, selAfter, sel_dontScroll); |
| 3643 | } |
| 3644 | |
| 3645 | // Handle the interaction of a change to a document with the editor |
| 3646 | // that this document is part of. |
| 3647 | function makeChangeSingleDocInEditor(cm, change, spans) { |
| 3648 | var doc = cm.doc, display = cm.display, from = change.from, to = change.to; |
| 3649 | |
| 3650 | var recomputeMaxLength = false, checkWidthStart = from.line; |
| 3651 | if (!cm.options.lineWrapping) { |
| 3652 | checkWidthStart = lineNo(visualLine(getLine(doc, from.line))); |
| 3653 | doc.iter(checkWidthStart, to.line + 1, function(line) { |
| 3654 | if (line == display.maxLine) { |
| 3655 | recomputeMaxLength = true; |
| 3656 | return true; |
| 3657 | } |
| 3658 | }); |
| 3659 | } |
| 3660 | |
| 3661 | if (doc.sel.contains(change.from, change.to) > -1) |
| 3662 | signalCursorActivity(cm); |
| 3663 | |
| 3664 | updateDoc(doc, change, spans, estimateHeight(cm)); |
| 3665 | |
| 3666 | if (!cm.options.lineWrapping) { |
| 3667 | doc.iter(checkWidthStart, from.line + change.text.length, function(line) { |
| 3668 | var len = lineLength(line); |
| 3669 | if (len > display.maxLineLength) { |
| 3670 | display.maxLine = line; |
| 3671 | display.maxLineLength = len; |
| 3672 | display.maxLineChanged = true; |
| 3673 | recomputeMaxLength = false; |
| 3674 | } |
| 3675 | }); |
| 3676 | if (recomputeMaxLength) cm.curOp.updateMaxLine = true; |
| 3677 | } |
| 3678 | |
| 3679 | // Adjust frontier, schedule worker |
| 3680 | doc.frontier = Math.min(doc.frontier, from.line); |
| 3681 | startWorker(cm, 400); |
| 3682 | |
| 3683 | var lendiff = change.text.length - (to.line - from.line) - 1; |
| 3684 | // Remember that these lines changed, for updating the display |
| 3685 | if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) |
| 3686 | regLineChange(cm, from.line, "text"); |
| 3687 | else |
| 3688 | regChange(cm, from.line, to.line + 1, lendiff); |
| 3689 | |
| 3690 | var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change"); |
| 3691 | if (changeHandler || changesHandler) { |
| 3692 | var obj = { |
| 3693 | from: from, to: to, |
| 3694 | text: change.text, |
| 3695 | removed: change.removed, |
| 3696 | origin: change.origin |
| 3697 | }; |
| 3698 | if (changeHandler) signalLater(cm, "change", cm, obj); |
| 3699 | if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); |
| 3700 | } |
| 3701 | cm.display.selForContextMenu = null; |
| 3702 | } |
| 3703 | |
| 3704 | function replaceRange(doc, code, from, to, origin) { |
| 3705 | if (!to) to = from; |
| 3706 | if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; } |
| 3707 | if (typeof code == "string") code = splitLines(code); |
| 3708 | makeChange(doc, {from: from, to: to, text: code, origin: origin}); |
| 3709 | } |
| 3710 | |
| 3711 | // SCROLLING THINGS INTO VIEW |
| 3712 | |
| 3713 | // If an editor sits on the top or bottom of the window, partially |
| 3714 | // scrolled out of view, this ensures that the cursor is visible. |
| 3715 | function maybeScrollWindow(cm, coords) { |
| 3716 | if (signalDOMEvent(cm, "scrollCursorIntoView")) return; |
| 3717 | |
| 3718 | var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null; |
| 3719 | if (coords.top + box.top < 0) doScroll = true; |
| 3720 | else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; |
| 3721 | if (doScroll != null && !phantom) { |
| 3722 | var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " + |
| 3723 | (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " + |
| 3724 | (coords.bottom - coords.top + scrollerCutOff) + "px; left: " + |
| 3725 | coords.left + "px; width: 2px;"); |
| 3726 | cm.display.lineSpace.appendChild(scrollNode); |
| 3727 | scrollNode.scrollIntoView(doScroll); |
| 3728 | cm.display.lineSpace.removeChild(scrollNode); |
| 3729 | } |
| 3730 | } |
| 3731 | |
| 3732 | // Scroll a given position into view (immediately), verifying that |
| 3733 | // it actually became visible (as line heights are accurately |
| 3734 | // measured, the position of something may 'drift' during drawing). |
| 3735 | function scrollPosIntoView(cm, pos, end, margin) { |
| 3736 | if (margin == null) margin = 0; |
| 3737 | for (var limit = 0; limit < 5; limit++) { |
| 3738 | var changed = false, coords = cursorCoords(cm, pos); |
| 3739 | var endCoords = !end || end == pos ? coords : cursorCoords(cm, end); |
| 3740 | var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left), |
| 3741 | Math.min(coords.top, endCoords.top) - margin, |
| 3742 | Math.max(coords.left, endCoords.left), |
| 3743 | Math.max(coords.bottom, endCoords.bottom) + margin); |
| 3744 | var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; |
| 3745 | if (scrollPos.scrollTop != null) { |
| 3746 | setScrollTop(cm, scrollPos.scrollTop); |
| 3747 | if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true; |
| 3748 | } |
| 3749 | if (scrollPos.scrollLeft != null) { |
| 3750 | setScrollLeft(cm, scrollPos.scrollLeft); |
| 3751 | if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true; |
| 3752 | } |
| 3753 | if (!changed) return coords; |
| 3754 | } |
| 3755 | } |
| 3756 | |
| 3757 | // Scroll a given set of coordinates into view (immediately). |
| 3758 | function scrollIntoView(cm, x1, y1, x2, y2) { |
| 3759 | var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); |
| 3760 | if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); |
| 3761 | if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); |
| 3762 | } |
| 3763 | |
| 3764 | // Calculate a new scroll position needed to scroll the given |
| 3765 | // rectangle into view. Returns an object with scrollTop and |
| 3766 | // scrollLeft properties. When these are undefined, the |
| 3767 | // vertical/horizontal position does not need to be adjusted. |
| 3768 | function calculateScrollPos(cm, x1, y1, x2, y2) { |
| 3769 | var display = cm.display, snapMargin = textHeight(cm.display); |
| 3770 | if (y1 < 0) y1 = 0; |
| 3771 | var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop; |
| 3772 | var screen = display.scroller.clientHeight - scrollerCutOff, result = {}; |
| 3773 | if (y2 - y1 > screen) y2 = y1 + screen; |
| 3774 | var docBottom = cm.doc.height + paddingVert(display); |
| 3775 | var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin; |
| 3776 | if (y1 < screentop) { |
| 3777 | result.scrollTop = atTop ? 0 : y1; |
| 3778 | } else if (y2 > screentop + screen) { |
| 3779 | var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen); |
| 3780 | if (newTop != screentop) result.scrollTop = newTop; |
| 3781 | } |
| 3782 | |
| 3783 | var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft; |
| 3784 | var screenw = display.scroller.clientWidth - scrollerCutOff - display.gutters.offsetWidth; |
| 3785 | var tooWide = x2 - x1 > screenw; |
| 3786 | if (tooWide) x2 = x1 + screenw; |
| 3787 | if (x1 < 10) |
| 3788 | result.scrollLeft = 0; |
| 3789 | else if (x1 < screenleft) |
| 3790 | result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10)); |
| 3791 | else if (x2 > screenw + screenleft - 3) |
| 3792 | result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw; |
| 3793 | |
| 3794 | return result; |
| 3795 | } |
| 3796 | |
| 3797 | // Store a relative adjustment to the scroll position in the current |
| 3798 | // operation (to be applied when the operation finishes). |
| 3799 | function addToScrollPos(cm, left, top) { |
| 3800 | if (left != null || top != null) resolveScrollToPos(cm); |
| 3801 | if (left != null) |
| 3802 | cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left; |
| 3803 | if (top != null) |
| 3804 | cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top; |
| 3805 | } |
| 3806 | |
| 3807 | // Make sure that at the end of the operation the current cursor is |
| 3808 | // shown. |
| 3809 | function ensureCursorVisible(cm) { |
| 3810 | resolveScrollToPos(cm); |
| 3811 | var cur = cm.getCursor(), from = cur, to = cur; |
| 3812 | if (!cm.options.lineWrapping) { |
| 3813 | from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur; |
| 3814 | to = Pos(cur.line, cur.ch + 1); |
| 3815 | } |
| 3816 | cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true}; |
| 3817 | } |
| 3818 | |
| 3819 | // When an operation has its scrollToPos property set, and another |
| 3820 | // scroll action is applied before the end of the operation, this |
| 3821 | // 'simulates' scrolling that position into view in a cheap way, so |
| 3822 | // that the effect of intermediate scroll commands is not ignored. |
| 3823 | function resolveScrollToPos(cm) { |
| 3824 | var range = cm.curOp.scrollToPos; |
| 3825 | if (range) { |
| 3826 | cm.curOp.scrollToPos = null; |
| 3827 | var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to); |
| 3828 | var sPos = calculateScrollPos(cm, Math.min(from.left, to.left), |
| 3829 | Math.min(from.top, to.top) - range.margin, |
| 3830 | Math.max(from.right, to.right), |
| 3831 | Math.max(from.bottom, to.bottom) + range.margin); |
| 3832 | cm.scrollTo(sPos.scrollLeft, sPos.scrollTop); |
| 3833 | } |
| 3834 | } |
| 3835 | |
| 3836 | // API UTILITIES |
| 3837 | |
| 3838 | // Indent the given line. The how parameter can be "smart", |
| 3839 | // "add"/null, "subtract", or "prev". When aggressive is false |
| 3840 | // (typically set to true for forced single-line indents), empty |
| 3841 | // lines are not indented, and places where the mode returns Pass |
| 3842 | // are left alone. |
| 3843 | function indentLine(cm, n, how, aggressive) { |
| 3844 | var doc = cm.doc, state; |
| 3845 | if (how == null) how = "add"; |
| 3846 | if (how == "smart") { |
| 3847 | // Fall back to "prev" when the mode doesn't have an indentation |
| 3848 | // method. |
| 3849 | if (!doc.mode.indent) how = "prev"; |
| 3850 | else state = getStateBefore(cm, n); |
| 3851 | } |
| 3852 | |
| 3853 | var tabSize = cm.options.tabSize; |
| 3854 | var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); |
| 3855 | if (line.stateAfter) line.stateAfter = null; |
| 3856 | var curSpaceString = line.text.match(/^\s*/)[0], indentation; |
| 3857 | if (!aggressive && !/\S/.test(line.text)) { |
| 3858 | indentation = 0; |
| 3859 | how = "not"; |
| 3860 | } else if (how == "smart") { |
| 3861 | indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); |
| 3862 | if (indentation == Pass || indentation > 150) { |
| 3863 | if (!aggressive) return; |
| 3864 | how = "prev"; |
| 3865 | } |
| 3866 | } |
| 3867 | if (how == "prev") { |
| 3868 | if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); |
| 3869 | else indentation = 0; |
| 3870 | } else if (how == "add") { |
| 3871 | indentation = curSpace + cm.options.indentUnit; |
| 3872 | } else if (how == "subtract") { |
| 3873 | indentation = curSpace - cm.options.indentUnit; |
| 3874 | } else if (typeof how == "number") { |
| 3875 | indentation = curSpace + how; |
| 3876 | } |
| 3877 | indentation = Math.max(0, indentation); |
| 3878 | |
| 3879 | var indentString = "", pos = 0; |
| 3880 | if (cm.options.indentWithTabs) |
| 3881 | for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} |
| 3882 | if (pos < indentation) indentString += spaceStr(indentation - pos); |
| 3883 | |
| 3884 | if (indentString != curSpaceString) { |
| 3885 | replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); |
| 3886 | } else { |
| 3887 | // Ensure that, if the cursor was in the whitespace at the start |
| 3888 | // of the line, it is moved to the end of that space. |
| 3889 | for (var i = 0; i < doc.sel.ranges.length; i++) { |
| 3890 | var range = doc.sel.ranges[i]; |
| 3891 | if (range.head.line == n && range.head.ch < curSpaceString.length) { |
| 3892 | var pos = Pos(n, curSpaceString.length); |
| 3893 | replaceOneSelection(doc, i, new Range(pos, pos)); |
| 3894 | break; |
| 3895 | } |
| 3896 | } |
| 3897 | } |
| 3898 | line.stateAfter = null; |
| 3899 | } |
| 3900 | |
| 3901 | // Utility for applying a change to a line by handle or number, |
| 3902 | // returning the number and optionally registering the line as |
| 3903 | // changed. |
| 3904 | function changeLine(doc, handle, changeType, op) { |
| 3905 | var no = handle, line = handle; |
| 3906 | if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); |
| 3907 | else no = lineNo(handle); |
| 3908 | if (no == null) return null; |
| 3909 | if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType); |
| 3910 | return line; |
| 3911 | } |
| 3912 | |
| 3913 | // Helper for deleting text near the selection(s), used to implement |
| 3914 | // backspace, delete, and similar functionality. |
| 3915 | function deleteNearSelection(cm, compute) { |
| 3916 | var ranges = cm.doc.sel.ranges, kill = []; |
| 3917 | // Build up a set of ranges to kill first, merging overlapping |
| 3918 | // ranges. |
| 3919 | for (var i = 0; i < ranges.length; i++) { |
| 3920 | var toKill = compute(ranges[i]); |
| 3921 | while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { |
| 3922 | var replaced = kill.pop(); |
| 3923 | if (cmp(replaced.from, toKill.from) < 0) { |
| 3924 | toKill.from = replaced.from; |
| 3925 | break; |
| 3926 | } |
| 3927 | } |
| 3928 | kill.push(toKill); |
| 3929 | } |
| 3930 | // Next, remove those actual ranges. |
| 3931 | runInOp(cm, function() { |
| 3932 | for (var i = kill.length - 1; i >= 0; i--) |
| 3933 | replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete"); |
| 3934 | ensureCursorVisible(cm); |
| 3935 | }); |
| 3936 | } |
| 3937 | |
| 3938 | // Used for horizontal relative motion. Dir is -1 or 1 (left or |
| 3939 | // right), unit can be "char", "column" (like char, but doesn't |
| 3940 | // cross line boundaries), "word" (across next word), or "group" (to |
| 3941 | // the start of next group of word or non-word-non-whitespace |
| 3942 | // chars). The visually param controls whether, in right-to-left |
| 3943 | // text, direction 1 means to move towards the next index in the |
| 3944 | // string, or towards the character to the right of the current |
| 3945 | // position. The resulting position will have a hitSide=true |
| 3946 | // property if it reached the end of the document. |
| 3947 | function findPosH(doc, pos, dir, unit, visually) { |
| 3948 | var line = pos.line, ch = pos.ch, origDir = dir; |
| 3949 | var lineObj = getLine(doc, line); |
| 3950 | var possible = true; |
| 3951 | function findNextLine() { |
| 3952 | var l = line + dir; |
| 3953 | if (l < doc.first || l >= doc.first + doc.size) return (possible = false); |
| 3954 | line = l; |
| 3955 | return lineObj = getLine(doc, l); |
| 3956 | } |
| 3957 | function moveOnce(boundToLine) { |
| 3958 | var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); |
| 3959 | if (next == null) { |
| 3960 | if (!boundToLine && findNextLine()) { |
| 3961 | if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); |
| 3962 | else ch = dir < 0 ? lineObj.text.length : 0; |
| 3963 | } else return (possible = false); |
| 3964 | } else ch = next; |
| 3965 | return true; |
| 3966 | } |
| 3967 | |
| 3968 | if (unit == "char") moveOnce(); |
| 3969 | else if (unit == "column") moveOnce(true); |
| 3970 | else if (unit == "word" || unit == "group") { |
| 3971 | var sawType = null, group = unit == "group"; |
| 3972 | var helper = doc.cm && doc.cm.getHelper(pos, "wordChars"); |
| 3973 | for (var first = true;; first = false) { |
| 3974 | if (dir < 0 && !moveOnce(!first)) break; |
| 3975 | var cur = lineObj.text.charAt(ch) || "\n"; |
| 3976 | var type = isWordChar(cur, helper) ? "w" |
| 3977 | : group && cur == "\n" ? "n" |
| 3978 | : !group || /\s/.test(cur) ? null |
| 3979 | : "p"; |
| 3980 | if (group && !first && !type) type = "s"; |
| 3981 | if (sawType && sawType != type) { |
| 3982 | if (dir < 0) {dir = 1; moveOnce();} |
| 3983 | break; |
| 3984 | } |
| 3985 | |
| 3986 | if (type) sawType = type; |
| 3987 | if (dir > 0 && !moveOnce(!first)) break; |
| 3988 | } |
| 3989 | } |
| 3990 | var result = skipAtomic(doc, Pos(line, ch), origDir, true); |
| 3991 | if (!possible) result.hitSide = true; |
| 3992 | return result; |
| 3993 | } |
| 3994 | |
| 3995 | // For relative vertical movement. Dir may be -1 or 1. Unit can be |
| 3996 | // "page" or "line". The resulting position will have a hitSide=true |
| 3997 | // property if it reached the end of the document. |
| 3998 | function findPosV(cm, pos, dir, unit) { |
| 3999 | var doc = cm.doc, x = pos.left, y; |
| 4000 | if (unit == "page") { |
| 4001 | var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); |
| 4002 | y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); |
| 4003 | } else if (unit == "line") { |
| 4004 | y = dir > 0 ? pos.bottom + 3 : pos.top - 3; |
| 4005 | } |
| 4006 | for (;;) { |
| 4007 | var target = coordsChar(cm, x, y); |
| 4008 | if (!target.outside) break; |
| 4009 | if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; } |
| 4010 | y += dir * 5; |
| 4011 | } |
| 4012 | return target; |
| 4013 | } |
| 4014 | |
| 4015 | // EDITOR METHODS |
| 4016 | |
| 4017 | // The publicly visible API. Note that methodOp(f) means |
| 4018 | // 'wrap f in an operation, performed on its `this` parameter'. |
| 4019 | |
| 4020 | // This is not the complete set of editor methods. Most of the |
| 4021 | // methods defined on the Doc type are also injected into |
| 4022 | // CodeMirror.prototype, for backwards compatibility and |
| 4023 | // convenience. |
| 4024 | |
| 4025 | CodeMirror.prototype = { |
| 4026 | constructor: CodeMirror, |
| 4027 | focus: function(){window.focus(); focusInput(this); fastPoll(this);}, |
| 4028 | |
| 4029 | setOption: function(option, value) { |
| 4030 | var options = this.options, old = options[option]; |
| 4031 | if (options[option] == value && option != "mode") return; |
| 4032 | options[option] = value; |
| 4033 | if (optionHandlers.hasOwnProperty(option)) |
| 4034 | operation(this, optionHandlers[option])(this, value, old); |
| 4035 | }, |
| 4036 | |
| 4037 | getOption: function(option) {return this.options[option];}, |
| 4038 | getDoc: function() {return this.doc;}, |
| 4039 | |
| 4040 | addKeyMap: function(map, bottom) { |
| 4041 | this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map)); |
| 4042 | }, |
| 4043 | removeKeyMap: function(map) { |
| 4044 | var maps = this.state.keyMaps; |
| 4045 | for (var i = 0; i < maps.length; ++i) |
| 4046 | if (maps[i] == map || maps[i].name == map) { |
| 4047 | maps.splice(i, 1); |
| 4048 | return true; |
| 4049 | } |
| 4050 | }, |
| 4051 | |
| 4052 | addOverlay: methodOp(function(spec, options) { |
| 4053 | var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); |
| 4054 | if (mode.startState) throw new Error("Overlays may not be stateful."); |
| 4055 | this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque}); |
| 4056 | this.state.modeGen++; |
| 4057 | regChange(this); |
| 4058 | }), |
| 4059 | removeOverlay: methodOp(function(spec) { |
| 4060 | var overlays = this.state.overlays; |
| 4061 | for (var i = 0; i < overlays.length; ++i) { |
| 4062 | var cur = overlays[i].modeSpec; |
| 4063 | if (cur == spec || typeof spec == "string" && cur.name == spec) { |
| 4064 | overlays.splice(i, 1); |
| 4065 | this.state.modeGen++; |
| 4066 | regChange(this); |
| 4067 | return; |
| 4068 | } |
| 4069 | } |
| 4070 | }), |
| 4071 | |
| 4072 | indentLine: methodOp(function(n, dir, aggressive) { |
| 4073 | if (typeof dir != "string" && typeof dir != "number") { |
| 4074 | if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; |
| 4075 | else dir = dir ? "add" : "subtract"; |
| 4076 | } |
| 4077 | if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); |
| 4078 | }), |
| 4079 | indentSelection: methodOp(function(how) { |
| 4080 | var ranges = this.doc.sel.ranges, end = -1; |
| 4081 | for (var i = 0; i < ranges.length; i++) { |
| 4082 | var range = ranges[i]; |
| 4083 | if (!range.empty()) { |
| 4084 | var from = range.from(), to = range.to(); |
| 4085 | var start = Math.max(end, from.line); |
| 4086 | end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1; |
| 4087 | for (var j = start; j < end; ++j) |
| 4088 | indentLine(this, j, how); |
| 4089 | var newRanges = this.doc.sel.ranges; |
| 4090 | if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0) |
| 4091 | replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); |
| 4092 | } else if (range.head.line > end) { |
| 4093 | indentLine(this, range.head.line, how, true); |
| 4094 | end = range.head.line; |
| 4095 | if (i == this.doc.sel.primIndex) ensureCursorVisible(this); |
| 4096 | } |
| 4097 | } |
| 4098 | }), |
| 4099 | |
| 4100 | // Fetch the parser token for a given character. Useful for hacks |
| 4101 | // that want to inspect the mode state (say, for completion). |
| 4102 | getTokenAt: function(pos, precise) { |
| 4103 | return takeToken(this, pos, precise); |
| 4104 | }, |
| 4105 | |
| 4106 | getLineTokens: function(line, precise) { |
| 4107 | return takeToken(this, Pos(line), precise, true); |
| 4108 | }, |
| 4109 | |
| 4110 | getTokenTypeAt: function(pos) { |
| 4111 | pos = clipPos(this.doc, pos); |
| 4112 | var styles = getLineStyles(this, getLine(this.doc, pos.line)); |
| 4113 | var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; |
| 4114 | var type; |
| 4115 | if (ch == 0) type = styles[2]; |
| 4116 | else for (;;) { |
| 4117 | var mid = (before + after) >> 1; |
| 4118 | if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid; |
| 4119 | else if (styles[mid * 2 + 1] < ch) before = mid + 1; |
| 4120 | else { type = styles[mid * 2 + 2]; break; } |
| 4121 | } |
| 4122 | var cut = type ? type.indexOf("cm-overlay ") : -1; |
| 4123 | return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1); |
| 4124 | }, |
| 4125 | |
| 4126 | getModeAt: function(pos) { |
| 4127 | var mode = this.doc.mode; |
| 4128 | if (!mode.innerMode) return mode; |
| 4129 | return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode; |
| 4130 | }, |
| 4131 | |
| 4132 | getHelper: function(pos, type) { |
| 4133 | return this.getHelpers(pos, type)[0]; |
| 4134 | }, |
| 4135 | |
| 4136 | getHelpers: function(pos, type) { |
| 4137 | var found = []; |
| 4138 | if (!helpers.hasOwnProperty(type)) return helpers; |
| 4139 | var help = helpers[type], mode = this.getModeAt(pos); |
| 4140 | if (typeof mode[type] == "string") { |
| 4141 | if (help[mode[type]]) found.push(help[mode[type]]); |
| 4142 | } else if (mode[type]) { |
| 4143 | for (var i = 0; i < mode[type].length; i++) { |
| 4144 | var val = help[mode[type][i]]; |
| 4145 | if (val) found.push(val); |
| 4146 | } |
| 4147 | } else if (mode.helperType && help[mode.helperType]) { |
| 4148 | found.push(help[mode.helperType]); |
| 4149 | } else if (help[mode.name]) { |
| 4150 | found.push(help[mode.name]); |
| 4151 | } |
| 4152 | for (var i = 0; i < help._global.length; i++) { |
| 4153 | var cur = help._global[i]; |
| 4154 | if (cur.pred(mode, this) && indexOf(found, cur.val) == -1) |
| 4155 | found.push(cur.val); |
| 4156 | } |
| 4157 | return found; |
| 4158 | }, |
| 4159 | |
| 4160 | getStateAfter: function(line, precise) { |
| 4161 | var doc = this.doc; |
| 4162 | line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); |
| 4163 | return getStateBefore(this, line + 1, precise); |
| 4164 | }, |
| 4165 | |
| 4166 | cursorCoords: function(start, mode) { |
| 4167 | var pos, range = this.doc.sel.primary(); |
| 4168 | if (start == null) pos = range.head; |
| 4169 | else if (typeof start == "object") pos = clipPos(this.doc, start); |
| 4170 | else pos = start ? range.from() : range.to(); |
| 4171 | return cursorCoords(this, pos, mode || "page"); |
| 4172 | }, |
| 4173 | |
| 4174 | charCoords: function(pos, mode) { |
| 4175 | return charCoords(this, clipPos(this.doc, pos), mode || "page"); |
| 4176 | }, |
| 4177 | |
| 4178 | coordsChar: function(coords, mode) { |
| 4179 | coords = fromCoordSystem(this, coords, mode || "page"); |
| 4180 | return coordsChar(this, coords.left, coords.top); |
| 4181 | }, |
| 4182 | |
| 4183 | lineAtHeight: function(height, mode) { |
| 4184 | height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; |
| 4185 | return lineAtHeight(this.doc, height + this.display.viewOffset); |
| 4186 | }, |
| 4187 | heightAtLine: function(line, mode) { |
| 4188 | var end = false, last = this.doc.first + this.doc.size - 1; |
| 4189 | if (line < this.doc.first) line = this.doc.first; |
| 4190 | else if (line > last) { line = last; end = true; } |
| 4191 | var lineObj = getLine(this.doc, line); |
| 4192 | return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page").top + |
| 4193 | (end ? this.doc.height - heightAtLine(lineObj) : 0); |
| 4194 | }, |
| 4195 | |
| 4196 | defaultTextHeight: function() { return textHeight(this.display); }, |
| 4197 | defaultCharWidth: function() { return charWidth(this.display); }, |
| 4198 | |
| 4199 | setGutterMarker: methodOp(function(line, gutterID, value) { |
| 4200 | return changeLine(this.doc, line, "gutter", function(line) { |
| 4201 | var markers = line.gutterMarkers || (line.gutterMarkers = {}); |
| 4202 | markers[gutterID] = value; |
| 4203 | if (!value && isEmpty(markers)) line.gutterMarkers = null; |
| 4204 | return true; |
| 4205 | }); |
| 4206 | }), |
| 4207 | |
| 4208 | clearGutter: methodOp(function(gutterID) { |
| 4209 | var cm = this, doc = cm.doc, i = doc.first; |
| 4210 | doc.iter(function(line) { |
| 4211 | if (line.gutterMarkers && line.gutterMarkers[gutterID]) { |
| 4212 | line.gutterMarkers[gutterID] = null; |
| 4213 | regLineChange(cm, i, "gutter"); |
| 4214 | if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; |
| 4215 | } |
| 4216 | ++i; |
| 4217 | }); |
| 4218 | }), |
| 4219 | |
| 4220 | addLineWidget: methodOp(function(handle, node, options) { |
| 4221 | return addLineWidget(this, handle, node, options); |
| 4222 | }), |
| 4223 | |
| 4224 | removeLineWidget: function(widget) { widget.clear(); }, |
| 4225 | |
| 4226 | lineInfo: function(line) { |
| 4227 | if (typeof line == "number") { |
| 4228 | if (!isLine(this.doc, line)) return null; |
| 4229 | var n = line; |
| 4230 | line = getLine(this.doc, line); |
| 4231 | if (!line) return null; |
| 4232 | } else { |
| 4233 | var n = lineNo(line); |
| 4234 | if (n == null) return null; |
| 4235 | } |
| 4236 | return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, |
| 4237 | textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, |
| 4238 | widgets: line.widgets}; |
| 4239 | }, |
| 4240 | |
| 4241 | getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};}, |
| 4242 | |
| 4243 | addWidget: function(pos, node, scroll, vert, horiz) { |
| 4244 | var display = this.display; |
| 4245 | pos = cursorCoords(this, clipPos(this.doc, pos)); |
| 4246 | var top = pos.bottom, left = pos.left; |
| 4247 | node.style.position = "absolute"; |
| 4248 | display.sizer.appendChild(node); |
| 4249 | if (vert == "over") { |
| 4250 | top = pos.top; |
| 4251 | } else if (vert == "above" || vert == "near") { |
| 4252 | var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), |
| 4253 | hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); |
| 4254 | // Default to positioning above (if specified and possible); otherwise default to positioning below |
| 4255 | if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) |
| 4256 | top = pos.top - node.offsetHeight; |
| 4257 | else if (pos.bottom + node.offsetHeight <= vspace) |
| 4258 | top = pos.bottom; |
| 4259 | if (left + node.offsetWidth > hspace) |
| 4260 | left = hspace - node.offsetWidth; |
| 4261 | } |
| 4262 | node.style.top = top + "px"; |
| 4263 | node.style.left = node.style.right = ""; |
| 4264 | if (horiz == "right") { |
| 4265 | left = display.sizer.clientWidth - node.offsetWidth; |
| 4266 | node.style.right = "0px"; |
| 4267 | } else { |
| 4268 | if (horiz == "left") left = 0; |
| 4269 | else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; |
| 4270 | node.style.left = left + "px"; |
| 4271 | } |
| 4272 | if (scroll) |
| 4273 | scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); |
| 4274 | }, |
| 4275 | |
| 4276 | triggerOnKeyDown: methodOp(onKeyDown), |
| 4277 | triggerOnKeyPress: methodOp(onKeyPress), |
| 4278 | triggerOnKeyUp: onKeyUp, |
| 4279 | |
| 4280 | execCommand: function(cmd) { |
| 4281 | if (commands.hasOwnProperty(cmd)) |
| 4282 | return commands[cmd](this); |
| 4283 | }, |
| 4284 | |
| 4285 | findPosH: function(from, amount, unit, visually) { |
| 4286 | var dir = 1; |
| 4287 | if (amount < 0) { dir = -1; amount = -amount; } |
| 4288 | for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { |
| 4289 | cur = findPosH(this.doc, cur, dir, unit, visually); |
| 4290 | if (cur.hitSide) break; |
| 4291 | } |
| 4292 | return cur; |
| 4293 | }, |
| 4294 | |
| 4295 | moveH: methodOp(function(dir, unit) { |
| 4296 | var cm = this; |
| 4297 | cm.extendSelectionsBy(function(range) { |
| 4298 | if (cm.display.shift || cm.doc.extend || range.empty()) |
| 4299 | return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually); |
| 4300 | else |
| 4301 | return dir < 0 ? range.from() : range.to(); |
| 4302 | }, sel_move); |
| 4303 | }), |
| 4304 | |
| 4305 | deleteH: methodOp(function(dir, unit) { |
| 4306 | var sel = this.doc.sel, doc = this.doc; |
| 4307 | if (sel.somethingSelected()) |
| 4308 | doc.replaceSelection("", null, "+delete"); |
| 4309 | else |
| 4310 | deleteNearSelection(this, function(range) { |
| 4311 | var other = findPosH(doc, range.head, dir, unit, false); |
| 4312 | return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}; |
| 4313 | }); |
| 4314 | }), |
| 4315 | |
| 4316 | findPosV: function(from, amount, unit, goalColumn) { |
| 4317 | var dir = 1, x = goalColumn; |
| 4318 | if (amount < 0) { dir = -1; amount = -amount; } |
| 4319 | for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { |
| 4320 | var coords = cursorCoords(this, cur, "div"); |
| 4321 | if (x == null) x = coords.left; |
| 4322 | else coords.left = x; |
| 4323 | cur = findPosV(this, coords, dir, unit); |
| 4324 | if (cur.hitSide) break; |
| 4325 | } |
| 4326 | return cur; |
| 4327 | }, |
| 4328 | |
| 4329 | moveV: methodOp(function(dir, unit) { |
| 4330 | var cm = this, doc = this.doc, goals = []; |
| 4331 | var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected(); |
| 4332 | doc.extendSelectionsBy(function(range) { |
| 4333 | if (collapse) |
| 4334 | return dir < 0 ? range.from() : range.to(); |
| 4335 | var headPos = cursorCoords(cm, range.head, "div"); |
| 4336 | if (range.goalColumn != null) headPos.left = range.goalColumn; |
| 4337 | goals.push(headPos.left); |
| 4338 | var pos = findPosV(cm, headPos, dir, unit); |
| 4339 | if (unit == "page" && range == doc.sel.primary()) |
| 4340 | addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top); |
| 4341 | return pos; |
| 4342 | }, sel_move); |
| 4343 | if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++) |
| 4344 | doc.sel.ranges[i].goalColumn = goals[i]; |
| 4345 | }), |
| 4346 | |
| 4347 | // Find the word at the given position (as returned by coordsChar). |
| 4348 | findWordAt: function(pos) { |
| 4349 | var doc = this.doc, line = getLine(doc, pos.line).text; |
| 4350 | var start = pos.ch, end = pos.ch; |
| 4351 | if (line) { |
| 4352 | var helper = this.getHelper(pos, "wordChars"); |
| 4353 | if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end; |
| 4354 | var startChar = line.charAt(start); |
| 4355 | var check = isWordChar(startChar, helper) |
| 4356 | ? function(ch) { return isWordChar(ch, helper); } |
| 4357 | : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} |
| 4358 | : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; |
| 4359 | while (start > 0 && check(line.charAt(start - 1))) --start; |
| 4360 | while (end < line.length && check(line.charAt(end))) ++end; |
| 4361 | } |
| 4362 | return new Range(Pos(pos.line, start), Pos(pos.line, end)); |
| 4363 | }, |
| 4364 | |
| 4365 | toggleOverwrite: function(value) { |
| 4366 | if (value != null && value == this.state.overwrite) return; |
| 4367 | if (this.state.overwrite = !this.state.overwrite) |
| 4368 | addClass(this.display.cursorDiv, "CodeMirror-overwrite"); |
| 4369 | else |
| 4370 | rmClass(this.display.cursorDiv, "CodeMirror-overwrite"); |
| 4371 | |
| 4372 | signal(this, "overwriteToggle", this, this.state.overwrite); |
| 4373 | }, |
| 4374 | hasFocus: function() { return activeElt() == this.display.input; }, |
| 4375 | |
| 4376 | scrollTo: methodOp(function(x, y) { |
| 4377 | if (x != null || y != null) resolveScrollToPos(this); |
| 4378 | if (x != null) this.curOp.scrollLeft = x; |
| 4379 | if (y != null) this.curOp.scrollTop = y; |
| 4380 | }), |
| 4381 | getScrollInfo: function() { |
| 4382 | var scroller = this.display.scroller, co = scrollerCutOff; |
| 4383 | return {left: scroller.scrollLeft, top: scroller.scrollTop, |
| 4384 | height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, |
| 4385 | clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; |
| 4386 | }, |
| 4387 | |
| 4388 | scrollIntoView: methodOp(function(range, margin) { |
| 4389 | if (range == null) { |
| 4390 | range = {from: this.doc.sel.primary().head, to: null}; |
| 4391 | if (margin == null) margin = this.options.cursorScrollMargin; |
| 4392 | } else if (typeof range == "number") { |
| 4393 | range = {from: Pos(range, 0), to: null}; |
| 4394 | } else if (range.from == null) { |
| 4395 | range = {from: range, to: null}; |
| 4396 | } |
| 4397 | if (!range.to) range.to = range.from; |
| 4398 | range.margin = margin || 0; |
| 4399 | |
| 4400 | if (range.from.line != null) { |
| 4401 | resolveScrollToPos(this); |
| 4402 | this.curOp.scrollToPos = range; |
| 4403 | } else { |
| 4404 | var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left), |
| 4405 | Math.min(range.from.top, range.to.top) - range.margin, |
| 4406 | Math.max(range.from.right, range.to.right), |
| 4407 | Math.max(range.from.bottom, range.to.bottom) + range.margin); |
| 4408 | this.scrollTo(sPos.scrollLeft, sPos.scrollTop); |
| 4409 | } |
| 4410 | }), |
| 4411 | |
| 4412 | setSize: methodOp(function(width, height) { |
| 4413 | var cm = this; |
| 4414 | function interpret(val) { |
| 4415 | return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; |
| 4416 | } |
| 4417 | if (width != null) cm.display.wrapper.style.width = interpret(width); |
| 4418 | if (height != null) cm.display.wrapper.style.height = interpret(height); |
| 4419 | if (cm.options.lineWrapping) clearLineMeasurementCache(this); |
| 4420 | var lineNo = cm.display.viewFrom; |
| 4421 | cm.doc.iter(lineNo, cm.display.viewTo, function(line) { |
| 4422 | if (line.widgets) for (var i = 0; i < line.widgets.length; i++) |
| 4423 | if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, "widget"); break; } |
| 4424 | ++lineNo; |
| 4425 | }); |
| 4426 | cm.curOp.forceUpdate = true; |
| 4427 | signal(cm, "refresh", this); |
| 4428 | }), |
| 4429 | |
| 4430 | operation: function(f){return runInOp(this, f);}, |
| 4431 | |
| 4432 | refresh: methodOp(function() { |
| 4433 | var oldHeight = this.display.cachedTextHeight; |
| 4434 | regChange(this); |
| 4435 | this.curOp.forceUpdate = true; |
| 4436 | clearCaches(this); |
| 4437 | this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop); |
| 4438 | updateGutterSpace(this); |
| 4439 | if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5) |
| 4440 | estimateLineHeights(this); |
| 4441 | signal(this, "refresh", this); |
| 4442 | }), |
| 4443 | |
| 4444 | swapDoc: methodOp(function(doc) { |
| 4445 | var old = this.doc; |
| 4446 | old.cm = null; |
| 4447 | attachDoc(this, doc); |
| 4448 | clearCaches(this); |
| 4449 | resetInput(this); |
| 4450 | this.scrollTo(doc.scrollLeft, doc.scrollTop); |
| 4451 | this.curOp.forceScroll = true; |
| 4452 | signalLater(this, "swapDoc", this, old); |
| 4453 | return old; |
| 4454 | }), |
| 4455 | |
| 4456 | getInputField: function(){return this.display.input;}, |
| 4457 | getWrapperElement: function(){return this.display.wrapper;}, |
| 4458 | getScrollerElement: function(){return this.display.scroller;}, |
| 4459 | getGutterElement: function(){return this.display.gutters;} |
| 4460 | }; |
| 4461 | eventMixin(CodeMirror); |
| 4462 | |
| 4463 | // OPTION DEFAULTS |
| 4464 | |
| 4465 | // The default configuration options. |
| 4466 | var defaults = CodeMirror.defaults = {}; |
| 4467 | // Functions to run when options are changed. |
| 4468 | var optionHandlers = CodeMirror.optionHandlers = {}; |
| 4469 | |
| 4470 | function option(name, deflt, handle, notOnInit) { |
| 4471 | CodeMirror.defaults[name] = deflt; |
| 4472 | if (handle) optionHandlers[name] = |
| 4473 | notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; |
| 4474 | } |
| 4475 | |
| 4476 | // Passed to option handlers when there is no old value. |
| 4477 | var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; |
| 4478 | |
| 4479 | // These two are, on init, called from the constructor because they |
| 4480 | // have to be initialized before the editor can start at all. |
| 4481 | option("value", "", function(cm, val) { |
| 4482 | cm.setValue(val); |
| 4483 | }, true); |
| 4484 | option("mode", null, function(cm, val) { |
| 4485 | cm.doc.modeOption = val; |
| 4486 | loadMode(cm); |
| 4487 | }, true); |
| 4488 | |
| 4489 | option("indentUnit", 2, loadMode, true); |
| 4490 | option("indentWithTabs", false); |
| 4491 | option("smartIndent", true); |
| 4492 | option("tabSize", 4, function(cm) { |
| 4493 | resetModeState(cm); |
| 4494 | clearCaches(cm); |
| 4495 | regChange(cm); |
| 4496 | }, true); |
| 4497 | option("specialChars", /[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g, function(cm, val) { |
| 4498 | cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g"); |
| 4499 | cm.refresh(); |
| 4500 | }, true); |
| 4501 | option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true); |
| 4502 | option("electricChars", true); |
| 4503 | option("rtlMoveVisually", !windows); |
| 4504 | option("wholeLineUpdateBefore", true); |
| 4505 | |
| 4506 | option("theme", "default", function(cm) { |
| 4507 | themeChanged(cm); |
| 4508 | guttersChanged(cm); |
| 4509 | }, true); |
| 4510 | option("keyMap", "default", function(cm, val, old) { |
| 4511 | var next = getKeyMap(val); |
| 4512 | var prev = old != CodeMirror.Init && getKeyMap(old); |
| 4513 | if (prev && prev.detach) prev.detach(cm, next); |
| 4514 | if (next.attach) next.attach(cm, prev || null); |
| 4515 | }); |
| 4516 | option("extraKeys", null); |
| 4517 | |
| 4518 | option("lineWrapping", false, wrappingChanged, true); |
| 4519 | option("gutters", [], function(cm) { |
| 4520 | setGuttersForLineNumbers(cm.options); |
| 4521 | guttersChanged(cm); |
| 4522 | }, true); |
| 4523 | option("fixedGutter", true, function(cm, val) { |
| 4524 | cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; |
| 4525 | cm.refresh(); |
| 4526 | }, true); |
| 4527 | option("coverGutterNextToScrollbar", false, updateScrollbars, true); |
| 4528 | option("lineNumbers", false, function(cm) { |
| 4529 | setGuttersForLineNumbers(cm.options); |
| 4530 | guttersChanged(cm); |
| 4531 | }, true); |
| 4532 | option("firstLineNumber", 1, guttersChanged, true); |
| 4533 | option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); |
| 4534 | option("showCursorWhenSelecting", false, updateSelection, true); |
| 4535 | |
| 4536 | option("resetSelectionOnContextMenu", true); |
| 4537 | |
| 4538 | option("readOnly", false, function(cm, val) { |
| 4539 | if (val == "nocursor") { |
| 4540 | onBlur(cm); |
| 4541 | cm.display.input.blur(); |
| 4542 | cm.display.disabled = true; |
| 4543 | } else { |
| 4544 | cm.display.disabled = false; |
| 4545 | if (!val) resetInput(cm); |
| 4546 | } |
| 4547 | }); |
| 4548 | option("disableInput", false, function(cm, val) {if (!val) resetInput(cm);}, true); |
| 4549 | option("dragDrop", true); |
| 4550 | |
| 4551 | option("cursorBlinkRate", 530); |
| 4552 | option("cursorScrollMargin", 0); |
| 4553 | option("cursorHeight", 1, updateSelection, true); |
| 4554 | option("singleCursorHeightPerLine", true, updateSelection, true); |
| 4555 | option("workTime", 100); |
| 4556 | option("workDelay", 100); |
| 4557 | option("flattenSpans", true, resetModeState, true); |
| 4558 | option("addModeClass", false, resetModeState, true); |
| 4559 | option("pollInterval", 100); |
| 4560 | option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;}); |
| 4561 | option("historyEventDelay", 1250); |
| 4562 | option("viewportMargin", 10, function(cm){cm.refresh();}, true); |
| 4563 | option("maxHighlightLength", 10000, resetModeState, true); |
| 4564 | option("moveInputWithCursor", true, function(cm, val) { |
| 4565 | if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0; |
| 4566 | }); |
| 4567 | |
| 4568 | option("tabindex", null, function(cm, val) { |
| 4569 | cm.display.input.tabIndex = val || ""; |
| 4570 | }); |
| 4571 | option("autofocus", null); |
| 4572 | |
| 4573 | // MODE DEFINITION AND QUERYING |
| 4574 | |
| 4575 | // Known modes, by name and by MIME |
| 4576 | var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; |
| 4577 | |
| 4578 | // Extra arguments are stored as the mode's dependencies, which is |
| 4579 | // used by (legacy) mechanisms like loadmode.js to automatically |
| 4580 | // load a mode. (Preferred mechanism is the require/define calls.) |
| 4581 | CodeMirror.defineMode = function(name, mode) { |
| 4582 | if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; |
| 4583 | if (arguments.length > 2) |
| 4584 | mode.dependencies = Array.prototype.slice.call(arguments, 2); |
| 4585 | modes[name] = mode; |
| 4586 | }; |
| 4587 | |
| 4588 | CodeMirror.defineMIME = function(mime, spec) { |
| 4589 | mimeModes[mime] = spec; |
| 4590 | }; |
| 4591 | |
| 4592 | // Given a MIME type, a {name, ...options} config object, or a name |
| 4593 | // string, return a mode config object. |
| 4594 | CodeMirror.resolveMode = function(spec) { |
| 4595 | if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { |
| 4596 | spec = mimeModes[spec]; |
| 4597 | } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { |
| 4598 | var found = mimeModes[spec.name]; |
| 4599 | if (typeof found == "string") found = {name: found}; |
| 4600 | spec = createObj(found, spec); |
| 4601 | spec.name = found.name; |
| 4602 | } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { |
| 4603 | return CodeMirror.resolveMode("application/xml"); |
| 4604 | } |
| 4605 | if (typeof spec == "string") return {name: spec}; |
| 4606 | else return spec || {name: "null"}; |
| 4607 | }; |
| 4608 | |
| 4609 | // Given a mode spec (anything that resolveMode accepts), find and |
| 4610 | // initialize an actual mode object. |
| 4611 | CodeMirror.getMode = function(options, spec) { |
| 4612 | var spec = CodeMirror.resolveMode(spec); |
| 4613 | var mfactory = modes[spec.name]; |
| 4614 | if (!mfactory) return CodeMirror.getMode(options, "text/plain"); |
| 4615 | var modeObj = mfactory(options, spec); |
| 4616 | if (modeExtensions.hasOwnProperty(spec.name)) { |
| 4617 | var exts = modeExtensions[spec.name]; |
| 4618 | for (var prop in exts) { |
| 4619 | if (!exts.hasOwnProperty(prop)) continue; |
| 4620 | if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; |
| 4621 | modeObj[prop] = exts[prop]; |
| 4622 | } |
| 4623 | } |
| 4624 | modeObj.name = spec.name; |
| 4625 | if (spec.helperType) modeObj.helperType = spec.helperType; |
| 4626 | if (spec.modeProps) for (var prop in spec.modeProps) |
| 4627 | modeObj[prop] = spec.modeProps[prop]; |
| 4628 | |
| 4629 | return modeObj; |
| 4630 | }; |
| 4631 | |
| 4632 | // Minimal default mode. |
| 4633 | CodeMirror.defineMode("null", function() { |
| 4634 | return {token: function(stream) {stream.skipToEnd();}}; |
| 4635 | }); |
| 4636 | CodeMirror.defineMIME("text/plain", "null"); |
| 4637 | |
| 4638 | // This can be used to attach properties to mode objects from |
| 4639 | // outside the actual mode definition. |
| 4640 | var modeExtensions = CodeMirror.modeExtensions = {}; |
| 4641 | CodeMirror.extendMode = function(mode, properties) { |
| 4642 | var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); |
| 4643 | copyObj(properties, exts); |
| 4644 | }; |
| 4645 | |
| 4646 | // EXTENSIONS |
| 4647 | |
| 4648 | CodeMirror.defineExtension = function(name, func) { |
| 4649 | CodeMirror.prototype[name] = func; |
| 4650 | }; |
| 4651 | CodeMirror.defineDocExtension = function(name, func) { |
| 4652 | Doc.prototype[name] = func; |
| 4653 | }; |
| 4654 | CodeMirror.defineOption = option; |
| 4655 | |
| 4656 | var initHooks = []; |
| 4657 | CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; |
| 4658 | |
| 4659 | var helpers = CodeMirror.helpers = {}; |
| 4660 | CodeMirror.registerHelper = function(type, name, value) { |
| 4661 | if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []}; |
| 4662 | helpers[type][name] = value; |
| 4663 | }; |
| 4664 | CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { |
| 4665 | CodeMirror.registerHelper(type, name, value); |
| 4666 | helpers[type]._global.push({pred: predicate, val: value}); |
| 4667 | }; |
| 4668 | |
| 4669 | // MODE STATE HANDLING |
| 4670 | |
| 4671 | // Utility functions for working with state. Exported because nested |
| 4672 | // modes need to do this for their inner modes. |
| 4673 | |
| 4674 | var copyState = CodeMirror.copyState = function(mode, state) { |
| 4675 | if (state === true) return state; |
| 4676 | if (mode.copyState) return mode.copyState(state); |
| 4677 | var nstate = {}; |
| 4678 | for (var n in state) { |
| 4679 | var val = state[n]; |
| 4680 | if (val instanceof Array) val = val.concat([]); |
| 4681 | nstate[n] = val; |
| 4682 | } |
| 4683 | return nstate; |
| 4684 | }; |
| 4685 | |
| 4686 | var startState = CodeMirror.startState = function(mode, a1, a2) { |
| 4687 | return mode.startState ? mode.startState(a1, a2) : true; |
| 4688 | }; |
| 4689 | |
| 4690 | // Given a mode and a state (for that mode), find the inner mode and |
| 4691 | // state at the position that the state refers to. |
| 4692 | CodeMirror.innerMode = function(mode, state) { |
| 4693 | while (mode.innerMode) { |
| 4694 | var info = mode.innerMode(state); |
| 4695 | if (!info || info.mode == mode) break; |
| 4696 | state = info.state; |
| 4697 | mode = info.mode; |
| 4698 | } |
| 4699 | return info || {mode: mode, state: state}; |
| 4700 | }; |
| 4701 | |
| 4702 | // STANDARD COMMANDS |
| 4703 | |
| 4704 | // Commands are parameter-less actions that can be performed on an |
| 4705 | // editor, mostly used for keybindings. |
| 4706 | var commands = CodeMirror.commands = { |
| 4707 | selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);}, |
| 4708 | singleSelection: function(cm) { |
| 4709 | cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); |
| 4710 | }, |
| 4711 | killLine: function(cm) { |
| 4712 | deleteNearSelection(cm, function(range) { |
| 4713 | if (range.empty()) { |
| 4714 | var len = getLine(cm.doc, range.head.line).text.length; |
| 4715 | if (range.head.ch == len && range.head.line < cm.lastLine()) |
| 4716 | return {from: range.head, to: Pos(range.head.line + 1, 0)}; |
| 4717 | else |
| 4718 | return {from: range.head, to: Pos(range.head.line, len)}; |
| 4719 | } else { |
| 4720 | return {from: range.from(), to: range.to()}; |
| 4721 | } |
| 4722 | }); |
| 4723 | }, |
| 4724 | deleteLine: function(cm) { |
| 4725 | deleteNearSelection(cm, function(range) { |
| 4726 | return {from: Pos(range.from().line, 0), |
| 4727 | to: clipPos(cm.doc, Pos(range.to().line + 1, 0))}; |
| 4728 | }); |
| 4729 | }, |
| 4730 | delLineLeft: function(cm) { |
| 4731 | deleteNearSelection(cm, function(range) { |
| 4732 | return {from: Pos(range.from().line, 0), to: range.from()}; |
| 4733 | }); |
| 4734 | }, |
| 4735 | delWrappedLineLeft: function(cm) { |
| 4736 | deleteNearSelection(cm, function(range) { |
| 4737 | var top = cm.charCoords(range.head, "div").top + 5; |
| 4738 | var leftPos = cm.coordsChar({left: 0, top: top}, "div"); |
| 4739 | return {from: leftPos, to: range.from()}; |
| 4740 | }); |
| 4741 | }, |
| 4742 | delWrappedLineRight: function(cm) { |
| 4743 | deleteNearSelection(cm, function(range) { |
| 4744 | var top = cm.charCoords(range.head, "div").top + 5; |
| 4745 | var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"); |
| 4746 | return {from: range.from(), to: rightPos }; |
| 4747 | }); |
| 4748 | }, |
| 4749 | undo: function(cm) {cm.undo();}, |
| 4750 | redo: function(cm) {cm.redo();}, |
| 4751 | undoSelection: function(cm) {cm.undoSelection();}, |
| 4752 | redoSelection: function(cm) {cm.redoSelection();}, |
| 4753 | goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, |
| 4754 | goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, |
| 4755 | goLineStart: function(cm) { |
| 4756 | cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); }, |
| 4757 | {origin: "+move", bias: 1}); |
| 4758 | }, |
| 4759 | goLineStartSmart: function(cm) { |
| 4760 | cm.extendSelectionsBy(function(range) { |
| 4761 | return lineStartSmart(cm, range.head); |
| 4762 | }, {origin: "+move", bias: 1}); |
| 4763 | }, |
| 4764 | goLineEnd: function(cm) { |
| 4765 | cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); }, |
| 4766 | {origin: "+move", bias: -1}); |
| 4767 | }, |
| 4768 | goLineRight: function(cm) { |
| 4769 | cm.extendSelectionsBy(function(range) { |
| 4770 | var top = cm.charCoords(range.head, "div").top + 5; |
| 4771 | return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"); |
| 4772 | }, sel_move); |
| 4773 | }, |
| 4774 | goLineLeft: function(cm) { |
| 4775 | cm.extendSelectionsBy(function(range) { |
| 4776 | var top = cm.charCoords(range.head, "div").top + 5; |
| 4777 | return cm.coordsChar({left: 0, top: top}, "div"); |
| 4778 | }, sel_move); |
| 4779 | }, |
| 4780 | goLineLeftSmart: function(cm) { |
| 4781 | cm.extendSelectionsBy(function(range) { |
| 4782 | var top = cm.charCoords(range.head, "div").top + 5; |
| 4783 | var pos = cm.coordsChar({left: 0, top: top}, "div"); |
| 4784 | if (pos.ch < cm.getLine(pos.line).search(/\S/)) return lineStartSmart(cm, range.head); |
| 4785 | return pos; |
| 4786 | }, sel_move); |
| 4787 | }, |
| 4788 | goLineUp: function(cm) {cm.moveV(-1, "line");}, |
| 4789 | goLineDown: function(cm) {cm.moveV(1, "line");}, |
| 4790 | goPageUp: function(cm) {cm.moveV(-1, "page");}, |
| 4791 | goPageDown: function(cm) {cm.moveV(1, "page");}, |
| 4792 | goCharLeft: function(cm) {cm.moveH(-1, "char");}, |
| 4793 | goCharRight: function(cm) {cm.moveH(1, "char");}, |
| 4794 | goColumnLeft: function(cm) {cm.moveH(-1, "column");}, |
| 4795 | goColumnRight: function(cm) {cm.moveH(1, "column");}, |
| 4796 | goWordLeft: function(cm) {cm.moveH(-1, "word");}, |
| 4797 | goGroupRight: function(cm) {cm.moveH(1, "group");}, |
| 4798 | goGroupLeft: function(cm) {cm.moveH(-1, "group");}, |
| 4799 | goWordRight: function(cm) {cm.moveH(1, "word");}, |
| 4800 | delCharBefore: function(cm) {cm.deleteH(-1, "char");}, |
| 4801 | delCharAfter: function(cm) {cm.deleteH(1, "char");}, |
| 4802 | delWordBefore: function(cm) {cm.deleteH(-1, "word");}, |
| 4803 | delWordAfter: function(cm) {cm.deleteH(1, "word");}, |
| 4804 | delGroupBefore: function(cm) {cm.deleteH(-1, "group");}, |
| 4805 | delGroupAfter: function(cm) {cm.deleteH(1, "group");}, |
| 4806 | indentAuto: function(cm) {cm.indentSelection("smart");}, |
| 4807 | indentMore: function(cm) {cm.indentSelection("add");}, |
| 4808 | indentLess: function(cm) {cm.indentSelection("subtract");}, |
| 4809 | insertTab: function(cm) {cm.replaceSelection("\t");}, |
| 4810 | insertSoftTab: function(cm) { |
| 4811 | var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize; |
| 4812 | for (var i = 0; i < ranges.length; i++) { |
| 4813 | var pos = ranges[i].from(); |
| 4814 | var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize); |
| 4815 | spaces.push(new Array(tabSize - col % tabSize + 1).join(" ")); |
| 4816 | } |
| 4817 | cm.replaceSelections(spaces); |
| 4818 | }, |
| 4819 | defaultTab: function(cm) { |
| 4820 | if (cm.somethingSelected()) cm.indentSelection("add"); |
| 4821 | else cm.execCommand("insertTab"); |
| 4822 | }, |
| 4823 | transposeChars: function(cm) { |
| 4824 | runInOp(cm, function() { |
| 4825 | var ranges = cm.listSelections(), newSel = []; |
| 4826 | for (var i = 0; i < ranges.length; i++) { |
| 4827 | var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text; |
| 4828 | if (line) { |
| 4829 | if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1); |
| 4830 | if (cur.ch > 0) { |
| 4831 | cur = new Pos(cur.line, cur.ch + 1); |
| 4832 | cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2), |
| 4833 | Pos(cur.line, cur.ch - 2), cur, "+transpose"); |
| 4834 | } else if (cur.line > cm.doc.first) { |
| 4835 | var prev = getLine(cm.doc, cur.line - 1).text; |
| 4836 | if (prev) |
| 4837 | cm.replaceRange(line.charAt(0) + "\n" + prev.charAt(prev.length - 1), |
| 4838 | Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), "+transpose"); |
| 4839 | } |
| 4840 | } |
| 4841 | newSel.push(new Range(cur, cur)); |
| 4842 | } |
| 4843 | cm.setSelections(newSel); |
| 4844 | }); |
| 4845 | }, |
| 4846 | newlineAndIndent: function(cm) { |
| 4847 | runInOp(cm, function() { |
| 4848 | var len = cm.listSelections().length; |
| 4849 | for (var i = 0; i < len; i++) { |
| 4850 | var range = cm.listSelections()[i]; |
| 4851 | cm.replaceRange("\n", range.anchor, range.head, "+input"); |
| 4852 | cm.indentLine(range.from().line + 1, null, true); |
| 4853 | ensureCursorVisible(cm); |
| 4854 | } |
| 4855 | }); |
| 4856 | }, |
| 4857 | toggleOverwrite: function(cm) {cm.toggleOverwrite();} |
| 4858 | }; |
| 4859 | |
| 4860 | |
| 4861 | // STANDARD KEYMAPS |
| 4862 | |
| 4863 | var keyMap = CodeMirror.keyMap = {}; |
| 4864 | |
| 4865 | keyMap.basic = { |
| 4866 | "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", |
| 4867 | "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", |
| 4868 | "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", |
| 4869 | "Tab": "defaultTab", "Shift-Tab": "indentAuto", |
| 4870 | "Enter": "newlineAndIndent", "Insert": "toggleOverwrite", |
| 4871 | "Esc": "singleSelection" |
| 4872 | }; |
| 4873 | // Note that the save and find-related commands aren't defined by |
| 4874 | // default. User code or addons can define them. Unknown commands |
| 4875 | // are simply ignored. |
| 4876 | keyMap.pcDefault = { |
| 4877 | "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", |
| 4878 | "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown", |
| 4879 | "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", |
| 4880 | "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", |
| 4881 | "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", |
| 4882 | "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", |
| 4883 | "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection", |
| 4884 | fallthrough: "basic" |
| 4885 | }; |
| 4886 | // Very basic readline/emacs-style bindings, which are standard on Mac. |
| 4887 | keyMap.emacsy = { |
| 4888 | "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", |
| 4889 | "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", |
| 4890 | "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", |
| 4891 | "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" |
| 4892 | }; |
| 4893 | keyMap.macDefault = { |
| 4894 | "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", |
| 4895 | "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", |
| 4896 | "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore", |
| 4897 | "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", |
| 4898 | "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", |
| 4899 | "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight", |
| 4900 | "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd", |
| 4901 | fallthrough: ["basic", "emacsy"] |
| 4902 | }; |
| 4903 | keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; |
| 4904 | |
| 4905 | // KEYMAP DISPATCH |
| 4906 | |
| 4907 | function normalizeKeyName(name) { |
| 4908 | var parts = name.split(/-(?!$)/), name = parts[parts.length - 1]; |
| 4909 | var alt, ctrl, shift, cmd; |
| 4910 | for (var i = 0; i < parts.length - 1; i++) { |
| 4911 | var mod = parts[i]; |
| 4912 | if (/^(cmd|meta|m)$/i.test(mod)) cmd = true; |
| 4913 | else if (/^a(lt)?$/i.test(mod)) alt = true; |
| 4914 | else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true; |
| 4915 | else if (/^s(hift)$/i.test(mod)) shift = true; |
| 4916 | else throw new Error("Unrecognized modifier name: " + mod); |
| 4917 | } |
| 4918 | if (alt) name = "Alt-" + name; |
| 4919 | if (ctrl) name = "Ctrl-" + name; |
| 4920 | if (cmd) name = "Cmd-" + name; |
| 4921 | if (shift) name = "Shift-" + name; |
| 4922 | return name; |
| 4923 | } |
| 4924 | |
| 4925 | // This is a kludge to keep keymaps mostly working as raw objects |
| 4926 | // (backwards compatibility) while at the same time support features |
| 4927 | // like normalization and multi-stroke key bindings. It compiles a |
| 4928 | // new normalized keymap, and then updates the old object to reflect |
| 4929 | // this. |
| 4930 | CodeMirror.normalizeKeyMap = function(keymap) { |
| 4931 | var copy = {}; |
| 4932 | for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) { |
| 4933 | var value = keymap[keyname]; |
| 4934 | if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue; |
| 4935 | if (value == "...") { delete keymap[keyname]; continue; } |
| 4936 | |
| 4937 | var keys = map(keyname.split(" "), normalizeKeyName); |
| 4938 | for (var i = 0; i < keys.length; i++) { |
| 4939 | var val, name; |
| 4940 | if (i == keys.length - 1) { |
| 4941 | name = keyname; |
| 4942 | val = value; |
| 4943 | } else { |
| 4944 | name = keys.slice(0, i + 1).join(" "); |
| 4945 | val = "..."; |
| 4946 | } |
| 4947 | var prev = copy[name]; |
| 4948 | if (!prev) copy[name] = val; |
| 4949 | else if (prev != val) throw new Error("Inconsistent bindings for " + name); |
| 4950 | } |
| 4951 | delete keymap[keyname]; |
| 4952 | } |
| 4953 | for (var prop in copy) keymap[prop] = copy[prop]; |
| 4954 | return keymap; |
| 4955 | }; |
| 4956 | |
| 4957 | var lookupKey = CodeMirror.lookupKey = function(key, map, handle) { |
| 4958 | map = getKeyMap(map); |
| 4959 | var found = map.call ? map.call(key) : map[key]; |
| 4960 | if (found === false) return "nothing"; |
| 4961 | if (found === "...") return "multi"; |
| 4962 | if (found != null && handle(found)) return "handled"; |
| 4963 | |
| 4964 | if (map.fallthrough) { |
| 4965 | if (Object.prototype.toString.call(map.fallthrough) != "[object Array]") |
| 4966 | return lookupKey(key, map.fallthrough, handle); |
| 4967 | for (var i = 0; i < map.fallthrough.length; i++) { |
| 4968 | var result = lookupKey(key, map.fallthrough[i], handle); |
| 4969 | if (result) return result; |
| 4970 | } |
| 4971 | } |
| 4972 | }; |
| 4973 | |
| 4974 | // Modifier key presses don't count as 'real' key presses for the |
| 4975 | // purpose of keymap fallthrough. |
| 4976 | var isModifierKey = CodeMirror.isModifierKey = function(value) { |
| 4977 | var name = typeof value == "string" ? value : keyNames[value.keyCode]; |
| 4978 | return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; |
| 4979 | }; |
| 4980 | |
| 4981 | // Look up the name of a key as indicated by an event object. |
| 4982 | var keyName = CodeMirror.keyName = function(event, noShift) { |
| 4983 | if (presto && event.keyCode == 34 && event["char"]) return false; |
| 4984 | var base = keyNames[event.keyCode], name = base; |
| 4985 | if (name == null || event.altGraphKey) return false; |
| 4986 | if (event.altKey && base != "Alt") name = "Alt-" + name; |
| 4987 | if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name; |
| 4988 | if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name; |
| 4989 | if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name; |
| 4990 | return name; |
| 4991 | }; |
| 4992 | |
| 4993 | function getKeyMap(val) { |
| 4994 | return typeof val == "string" ? keyMap[val] : val; |
| 4995 | } |
| 4996 | |
| 4997 | // FROMTEXTAREA |
| 4998 | |
| 4999 | CodeMirror.fromTextArea = function(textarea, options) { |
| 5000 | if (!options) options = {}; |
| 5001 | options.value = textarea.value; |
| 5002 | if (!options.tabindex && textarea.tabindex) |
| 5003 | options.tabindex = textarea.tabindex; |
| 5004 | if (!options.placeholder && textarea.placeholder) |
| 5005 | options.placeholder = textarea.placeholder; |
| 5006 | // Set autofocus to true if this textarea is focused, or if it has |
| 5007 | // autofocus and no other element is focused. |
| 5008 | if (options.autofocus == null) { |
| 5009 | var hasFocus = activeElt(); |
| 5010 | options.autofocus = hasFocus == textarea || |
| 5011 | textarea.getAttribute("autofocus") != null && hasFocus == document.body; |
| 5012 | } |
| 5013 | |
| 5014 | function save() {textarea.value = cm.getValue();} |
| 5015 | if (textarea.form) { |
| 5016 | on(textarea.form, "submit", save); |
| 5017 | // Deplorable hack to make the submit method do the right thing. |
| 5018 | if (!options.leaveSubmitMethodAlone) { |
| 5019 | var form = textarea.form, realSubmit = form.submit; |
| 5020 | try { |
| 5021 | var wrappedSubmit = form.submit = function() { |
| 5022 | save(); |
| 5023 | form.submit = realSubmit; |
| 5024 | form.submit(); |
| 5025 | form.submit = wrappedSubmit; |
| 5026 | }; |
| 5027 | } catch(e) {} |
| 5028 | } |
| 5029 | } |
| 5030 | |
| 5031 | textarea.style.display = "none"; |
| 5032 | var cm = CodeMirror(function(node) { |
| 5033 | textarea.parentNode.insertBefore(node, textarea.nextSibling); |
| 5034 | }, options); |
| 5035 | cm.save = save; |
| 5036 | cm.getTextArea = function() { return textarea; }; |
| 5037 | cm.toTextArea = function() { |
| 5038 | cm.toTextArea = isNaN; // Prevent this from being ran twice |
| 5039 | save(); |
| 5040 | textarea.parentNode.removeChild(cm.getWrapperElement()); |
| 5041 | textarea.style.display = ""; |
| 5042 | if (textarea.form) { |
| 5043 | off(textarea.form, "submit", save); |
| 5044 | if (typeof textarea.form.submit == "function") |
| 5045 | textarea.form.submit = realSubmit; |
| 5046 | } |
| 5047 | }; |
| 5048 | return cm; |
| 5049 | }; |
| 5050 | |
| 5051 | // STRING STREAM |
| 5052 | |
| 5053 | // Fed to the mode parsers, provides helper functions to make |
| 5054 | // parsers more succinct. |
| 5055 | |
| 5056 | var StringStream = CodeMirror.StringStream = function(string, tabSize) { |
| 5057 | this.pos = this.start = 0; |
| 5058 | this.string = string; |
| 5059 | this.tabSize = tabSize || 8; |
| 5060 | this.lastColumnPos = this.lastColumnValue = 0; |
| 5061 | this.lineStart = 0; |
| 5062 | }; |
| 5063 | |
| 5064 | StringStream.prototype = { |
| 5065 | eol: function() {return this.pos >= this.string.length;}, |
| 5066 | sol: function() {return this.pos == this.lineStart;}, |
| 5067 | peek: function() {return this.string.charAt(this.pos) || undefined;}, |
| 5068 | next: function() { |
| 5069 | if (this.pos < this.string.length) |
| 5070 | return this.string.charAt(this.pos++); |
| 5071 | }, |
| 5072 | eat: function(match) { |
| 5073 | var ch = this.string.charAt(this.pos); |
| 5074 | if (typeof match == "string") var ok = ch == match; |
| 5075 | else var ok = ch && (match.test ? match.test(ch) : match(ch)); |
| 5076 | if (ok) {++this.pos; return ch;} |
| 5077 | }, |
| 5078 | eatWhile: function(match) { |
| 5079 | var start = this.pos; |
| 5080 | while (this.eat(match)){} |
| 5081 | return this.pos > start; |
| 5082 | }, |
| 5083 | eatSpace: function() { |
| 5084 | var start = this.pos; |
| 5085 | while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; |
| 5086 | return this.pos > start; |
| 5087 | }, |
| 5088 | skipToEnd: function() {this.pos = this.string.length;}, |
| 5089 | skipTo: function(ch) { |
| 5090 | var found = this.string.indexOf(ch, this.pos); |
| 5091 | if (found > -1) {this.pos = found; return true;} |
| 5092 | }, |
| 5093 | backUp: function(n) {this.pos -= n;}, |
| 5094 | column: function() { |
| 5095 | if (this.lastColumnPos < this.start) { |
| 5096 | this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); |
| 5097 | this.lastColumnPos = this.start; |
| 5098 | } |
| 5099 | return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); |
| 5100 | }, |
| 5101 | indentation: function() { |
| 5102 | return countColumn(this.string, null, this.tabSize) - |
| 5103 | (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); |
| 5104 | }, |
| 5105 | match: function(pattern, consume, caseInsensitive) { |
| 5106 | if (typeof pattern == "string") { |
| 5107 | var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; |
| 5108 | var substr = this.string.substr(this.pos, pattern.length); |
| 5109 | if (cased(substr) == cased(pattern)) { |
| 5110 | if (consume !== false) this.pos += pattern.length; |
| 5111 | return true; |
| 5112 | } |
| 5113 | } else { |
| 5114 | var match = this.string.slice(this.pos).match(pattern); |
| 5115 | if (match && match.index > 0) return null; |
| 5116 | if (match && consume !== false) this.pos += match[0].length; |
| 5117 | return match; |
| 5118 | } |
| 5119 | }, |
| 5120 | current: function(){return this.string.slice(this.start, this.pos);}, |
| 5121 | hideFirstChars: function(n, inner) { |
| 5122 | this.lineStart += n; |
| 5123 | try { return inner(); } |
| 5124 | finally { this.lineStart -= n; } |
| 5125 | } |
| 5126 | }; |
| 5127 | |
| 5128 | // TEXTMARKERS |
| 5129 | |
| 5130 | // Created with markText and setBookmark methods. A TextMarker is a |
| 5131 | // handle that can be used to clear or find a marked position in the |
| 5132 | // document. Line objects hold arrays (markedSpans) containing |
| 5133 | // {from, to, marker} object pointing to such marker objects, and |
| 5134 | // indicating that such a marker is present on that line. Multiple |
| 5135 | // lines may point to the same marker when it spans across lines. |
| 5136 | // The spans will have null for their from/to properties when the |
| 5137 | // marker continues beyond the start/end of the line. Markers have |
| 5138 | // links back to the lines they currently touch. |
| 5139 | |
| 5140 | var TextMarker = CodeMirror.TextMarker = function(doc, type) { |
| 5141 | this.lines = []; |
| 5142 | this.type = type; |
| 5143 | this.doc = doc; |
| 5144 | }; |
| 5145 | eventMixin(TextMarker); |
| 5146 | |
| 5147 | // Clear the marker. |
| 5148 | TextMarker.prototype.clear = function() { |
| 5149 | if (this.explicitlyCleared) return; |
| 5150 | var cm = this.doc.cm, withOp = cm && !cm.curOp; |
| 5151 | if (withOp) startOperation(cm); |
| 5152 | if (hasHandler(this, "clear")) { |
| 5153 | var found = this.find(); |
| 5154 | if (found) signalLater(this, "clear", found.from, found.to); |
| 5155 | } |
| 5156 | var min = null, max = null; |
| 5157 | for (var i = 0; i < this.lines.length; ++i) { |
| 5158 | var line = this.lines[i]; |
| 5159 | var span = getMarkedSpanFor(line.markedSpans, this); |
| 5160 | if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text"); |
| 5161 | else if (cm) { |
| 5162 | if (span.to != null) max = lineNo(line); |
| 5163 | if (span.from != null) min = lineNo(line); |
| 5164 | } |
| 5165 | line.markedSpans = removeMarkedSpan(line.markedSpans, span); |
| 5166 | if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm) |
| 5167 | updateLineHeight(line, textHeight(cm.display)); |
| 5168 | } |
| 5169 | if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) { |
| 5170 | var visual = visualLine(this.lines[i]), len = lineLength(visual); |
| 5171 | if (len > cm.display.maxLineLength) { |
| 5172 | cm.display.maxLine = visual; |
| 5173 | cm.display.maxLineLength = len; |
| 5174 | cm.display.maxLineChanged = true; |
| 5175 | } |
| 5176 | } |
| 5177 | |
| 5178 | if (min != null && cm && this.collapsed) regChange(cm, min, max + 1); |
| 5179 | this.lines.length = 0; |
| 5180 | this.explicitlyCleared = true; |
| 5181 | if (this.atomic && this.doc.cantEdit) { |
| 5182 | this.doc.cantEdit = false; |
| 5183 | if (cm) reCheckSelection(cm.doc); |
| 5184 | } |
| 5185 | if (cm) signalLater(cm, "markerCleared", cm, this); |
| 5186 | if (withOp) endOperation(cm); |
| 5187 | if (this.parent) this.parent.clear(); |
| 5188 | }; |
| 5189 | |
| 5190 | // Find the position of the marker in the document. Returns a {from, |
| 5191 | // to} object by default. Side can be passed to get a specific side |
| 5192 | // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the |
| 5193 | // Pos objects returned contain a line object, rather than a line |
| 5194 | // number (used to prevent looking up the same line twice). |
| 5195 | TextMarker.prototype.find = function(side, lineObj) { |
| 5196 | if (side == null && this.type == "bookmark") side = 1; |
| 5197 | var from, to; |
| 5198 | for (var i = 0; i < this.lines.length; ++i) { |
| 5199 | var line = this.lines[i]; |
| 5200 | var span = getMarkedSpanFor(line.markedSpans, this); |
| 5201 | if (span.from != null) { |
| 5202 | from = Pos(lineObj ? line : lineNo(line), span.from); |
| 5203 | if (side == -1) return from; |
| 5204 | } |
| 5205 | if (span.to != null) { |
| 5206 | to = Pos(lineObj ? line : lineNo(line), span.to); |
| 5207 | if (side == 1) return to; |
| 5208 | } |
| 5209 | } |
| 5210 | return from && {from: from, to: to}; |
| 5211 | }; |
| 5212 | |
| 5213 | // Signals that the marker's widget changed, and surrounding layout |
| 5214 | // should be recomputed. |
| 5215 | TextMarker.prototype.changed = function() { |
| 5216 | var pos = this.find(-1, true), widget = this, cm = this.doc.cm; |
| 5217 | if (!pos || !cm) return; |
| 5218 | runInOp(cm, function() { |
| 5219 | var line = pos.line, lineN = lineNo(pos.line); |
| 5220 | var view = findViewForLine(cm, lineN); |
| 5221 | if (view) { |
| 5222 | clearLineMeasurementCacheFor(view); |
| 5223 | cm.curOp.selectionChanged = cm.curOp.forceUpdate = true; |
| 5224 | } |
| 5225 | cm.curOp.updateMaxLine = true; |
| 5226 | if (!lineIsHidden(widget.doc, line) && widget.height != null) { |
| 5227 | var oldHeight = widget.height; |
| 5228 | widget.height = null; |
| 5229 | var dHeight = widgetHeight(widget) - oldHeight; |
| 5230 | if (dHeight) |
| 5231 | updateLineHeight(line, line.height + dHeight); |
| 5232 | } |
| 5233 | }); |
| 5234 | }; |
| 5235 | |
| 5236 | TextMarker.prototype.attachLine = function(line) { |
| 5237 | if (!this.lines.length && this.doc.cm) { |
| 5238 | var op = this.doc.cm.curOp; |
| 5239 | if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) |
| 5240 | (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); |
| 5241 | } |
| 5242 | this.lines.push(line); |
| 5243 | }; |
| 5244 | TextMarker.prototype.detachLine = function(line) { |
| 5245 | this.lines.splice(indexOf(this.lines, line), 1); |
| 5246 | if (!this.lines.length && this.doc.cm) { |
| 5247 | var op = this.doc.cm.curOp; |
| 5248 | (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); |
| 5249 | } |
| 5250 | }; |
| 5251 | |
| 5252 | // Collapsed markers have unique ids, in order to be able to order |
| 5253 | // them, which is needed for uniquely determining an outer marker |
| 5254 | // when they overlap (they may nest, but not partially overlap). |
| 5255 | var nextMarkerId = 0; |
| 5256 | |
| 5257 | // Create a marker, wire it up to the right lines, and |
| 5258 | function markText(doc, from, to, options, type) { |
| 5259 | // Shared markers (across linked documents) are handled separately |
| 5260 | // (markTextShared will call out to this again, once per |
| 5261 | // document). |
| 5262 | if (options && options.shared) return markTextShared(doc, from, to, options, type); |
| 5263 | // Ensure we are in an operation. |
| 5264 | if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); |
| 5265 | |
| 5266 | var marker = new TextMarker(doc, type), diff = cmp(from, to); |
| 5267 | if (options) copyObj(options, marker, false); |
| 5268 | // Don't connect empty markers unless clearWhenEmpty is false |
| 5269 | if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) |
| 5270 | return marker; |
| 5271 | if (marker.replacedWith) { |
| 5272 | // Showing up as a widget implies collapsed (widget replaces text) |
| 5273 | marker.collapsed = true; |
| 5274 | marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget"); |
| 5275 | if (!options.handleMouseEvents) marker.widgetNode.ignoreEvents = true; |
| 5276 | if (options.insertLeft) marker.widgetNode.insertLeft = true; |
| 5277 | } |
| 5278 | if (marker.collapsed) { |
| 5279 | if (conflictingCollapsedRange(doc, from.line, from, to, marker) || |
| 5280 | from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) |
| 5281 | throw new Error("Inserting collapsed marker partially overlapping an existing one"); |
| 5282 | sawCollapsedSpans = true; |
| 5283 | } |
| 5284 | |
| 5285 | if (marker.addToHistory) |
| 5286 | addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN); |
| 5287 | |
| 5288 | var curLine = from.line, cm = doc.cm, updateMaxLine; |
| 5289 | doc.iter(curLine, to.line + 1, function(line) { |
| 5290 | if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) |
| 5291 | updateMaxLine = true; |
| 5292 | if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0); |
| 5293 | addMarkedSpan(line, new MarkedSpan(marker, |
| 5294 | curLine == from.line ? from.ch : null, |
| 5295 | curLine == to.line ? to.ch : null)); |
| 5296 | ++curLine; |
| 5297 | }); |
| 5298 | // lineIsHidden depends on the presence of the spans, so needs a second pass |
| 5299 | if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) { |
| 5300 | if (lineIsHidden(doc, line)) updateLineHeight(line, 0); |
| 5301 | }); |
| 5302 | |
| 5303 | if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); }); |
| 5304 | |
| 5305 | if (marker.readOnly) { |
| 5306 | sawReadOnlySpans = true; |
| 5307 | if (doc.history.done.length || doc.history.undone.length) |
| 5308 | doc.clearHistory(); |
| 5309 | } |
| 5310 | if (marker.collapsed) { |
| 5311 | marker.id = ++nextMarkerId; |
| 5312 | marker.atomic = true; |
| 5313 | } |
| 5314 | if (cm) { |
| 5315 | // Sync editor state |
| 5316 | if (updateMaxLine) cm.curOp.updateMaxLine = true; |
| 5317 | if (marker.collapsed) |
| 5318 | regChange(cm, from.line, to.line + 1); |
| 5319 | else if (marker.className || marker.title || marker.startStyle || marker.endStyle) |
| 5320 | for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text"); |
| 5321 | if (marker.atomic) reCheckSelection(cm.doc); |
| 5322 | signalLater(cm, "markerAdded", cm, marker); |
| 5323 | } |
| 5324 | return marker; |
| 5325 | } |
| 5326 | |
| 5327 | // SHARED TEXTMARKERS |
| 5328 | |
| 5329 | // A shared marker spans multiple linked documents. It is |
| 5330 | // implemented as a meta-marker-object controlling multiple normal |
| 5331 | // markers. |
| 5332 | var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) { |
| 5333 | this.markers = markers; |
| 5334 | this.primary = primary; |
| 5335 | for (var i = 0; i < markers.length; ++i) |
| 5336 | markers[i].parent = this; |
| 5337 | }; |
| 5338 | eventMixin(SharedTextMarker); |
| 5339 | |
| 5340 | SharedTextMarker.prototype.clear = function() { |
| 5341 | if (this.explicitlyCleared) return; |
| 5342 | this.explicitlyCleared = true; |
| 5343 | for (var i = 0; i < this.markers.length; ++i) |
| 5344 | this.markers[i].clear(); |
| 5345 | signalLater(this, "clear"); |
| 5346 | }; |
| 5347 | SharedTextMarker.prototype.find = function(side, lineObj) { |
| 5348 | return this.primary.find(side, lineObj); |
| 5349 | }; |
| 5350 | |
| 5351 | function markTextShared(doc, from, to, options, type) { |
| 5352 | options = copyObj(options); |
| 5353 | options.shared = false; |
| 5354 | var markers = [markText(doc, from, to, options, type)], primary = markers[0]; |
| 5355 | var widget = options.widgetNode; |
| 5356 | linkedDocs(doc, function(doc) { |
| 5357 | if (widget) options.widgetNode = widget.cloneNode(true); |
| 5358 | markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); |
| 5359 | for (var i = 0; i < doc.linked.length; ++i) |
| 5360 | if (doc.linked[i].isParent) return; |
| 5361 | primary = lst(markers); |
| 5362 | }); |
| 5363 | return new SharedTextMarker(markers, primary); |
| 5364 | } |
| 5365 | |
| 5366 | function findSharedMarkers(doc) { |
| 5367 | return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), |
| 5368 | function(m) { return m.parent; }); |
| 5369 | } |
| 5370 | |
| 5371 | function copySharedMarkers(doc, markers) { |
| 5372 | for (var i = 0; i < markers.length; i++) { |
| 5373 | var marker = markers[i], pos = marker.find(); |
| 5374 | var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to); |
| 5375 | if (cmp(mFrom, mTo)) { |
| 5376 | var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type); |
| 5377 | marker.markers.push(subMark); |
| 5378 | subMark.parent = marker; |
| 5379 | } |
| 5380 | } |
| 5381 | } |
| 5382 | |
| 5383 | function detachSharedMarkers(markers) { |
| 5384 | for (var i = 0; i < markers.length; i++) { |
| 5385 | var marker = markers[i], linked = [marker.primary.doc];; |
| 5386 | linkedDocs(marker.primary.doc, function(d) { linked.push(d); }); |
| 5387 | for (var j = 0; j < marker.markers.length; j++) { |
| 5388 | var subMarker = marker.markers[j]; |
| 5389 | if (indexOf(linked, subMarker.doc) == -1) { |
| 5390 | subMarker.parent = null; |
| 5391 | marker.markers.splice(j--, 1); |
| 5392 | } |
| 5393 | } |
| 5394 | } |
| 5395 | } |
| 5396 | |
| 5397 | // TEXTMARKER SPANS |
| 5398 | |
| 5399 | function MarkedSpan(marker, from, to) { |
| 5400 | this.marker = marker; |
| 5401 | this.from = from; this.to = to; |
| 5402 | } |
| 5403 | |
| 5404 | // Search an array of spans for a span matching the given marker. |
| 5405 | function getMarkedSpanFor(spans, marker) { |
| 5406 | if (spans) for (var i = 0; i < spans.length; ++i) { |
| 5407 | var span = spans[i]; |
| 5408 | if (span.marker == marker) return span; |
| 5409 | } |
| 5410 | } |
| 5411 | // Remove a span from an array, returning undefined if no spans are |
| 5412 | // left (we don't store arrays for lines without spans). |
| 5413 | function removeMarkedSpan(spans, span) { |
| 5414 | for (var r, i = 0; i < spans.length; ++i) |
| 5415 | if (spans[i] != span) (r || (r = [])).push(spans[i]); |
| 5416 | return r; |
| 5417 | } |
| 5418 | // Add a span to a line. |
| 5419 | function addMarkedSpan(line, span) { |
| 5420 | line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; |
| 5421 | span.marker.attachLine(line); |
| 5422 | } |
| 5423 | |
| 5424 | // Used for the algorithm that adjusts markers for a change in the |
| 5425 | // document. These functions cut an array of spans at a given |
| 5426 | // character position, returning an array of remaining chunks (or |
| 5427 | // undefined if nothing remains). |
| 5428 | function markedSpansBefore(old, startCh, isInsert) { |
| 5429 | if (old) for (var i = 0, nw; i < old.length; ++i) { |
| 5430 | var span = old[i], marker = span.marker; |
| 5431 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); |
| 5432 | if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { |
| 5433 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); |
| 5434 | (nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to)); |
| 5435 | } |
| 5436 | } |
| 5437 | return nw; |
| 5438 | } |
| 5439 | function markedSpansAfter(old, endCh, isInsert) { |
| 5440 | if (old) for (var i = 0, nw; i < old.length; ++i) { |
| 5441 | var span = old[i], marker = span.marker; |
| 5442 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); |
| 5443 | if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { |
| 5444 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); |
| 5445 | (nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh, |
| 5446 | span.to == null ? null : span.to - endCh)); |
| 5447 | } |
| 5448 | } |
| 5449 | return nw; |
| 5450 | } |
| 5451 | |
| 5452 | // Given a change object, compute the new set of marker spans that |
| 5453 | // cover the line in which the change took place. Removes spans |
| 5454 | // entirely within the change, reconnects spans belonging to the |
| 5455 | // same marker that appear on both sides of the change, and cuts off |
| 5456 | // spans partially within the change. Returns an array of span |
| 5457 | // arrays with one element for each line in (after) the change. |
| 5458 | function stretchSpansOverChange(doc, change) { |
| 5459 | var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; |
| 5460 | var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; |
| 5461 | if (!oldFirst && !oldLast) return null; |
| 5462 | |
| 5463 | var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0; |
| 5464 | // Get the spans that 'stick out' on both sides |
| 5465 | var first = markedSpansBefore(oldFirst, startCh, isInsert); |
| 5466 | var last = markedSpansAfter(oldLast, endCh, isInsert); |
| 5467 | |
| 5468 | // Next, merge those two ends |
| 5469 | var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); |
| 5470 | if (first) { |
| 5471 | // Fix up .to properties of first |
| 5472 | for (var i = 0; i < first.length; ++i) { |
| 5473 | var span = first[i]; |
| 5474 | if (span.to == null) { |
| 5475 | var found = getMarkedSpanFor(last, span.marker); |
| 5476 | if (!found) span.to = startCh; |
| 5477 | else if (sameLine) span.to = found.to == null ? null : found.to + offset; |
| 5478 | } |
| 5479 | } |
| 5480 | } |
| 5481 | if (last) { |
| 5482 | // Fix up .from in last (or move them into first in case of sameLine) |
| 5483 | for (var i = 0; i < last.length; ++i) { |
| 5484 | var span = last[i]; |
| 5485 | if (span.to != null) span.to += offset; |
| 5486 | if (span.from == null) { |
| 5487 | var found = getMarkedSpanFor(first, span.marker); |
| 5488 | if (!found) { |
| 5489 | span.from = offset; |
| 5490 | if (sameLine) (first || (first = [])).push(span); |
| 5491 | } |
| 5492 | } else { |
| 5493 | span.from += offset; |
| 5494 | if (sameLine) (first || (first = [])).push(span); |
| 5495 | } |
| 5496 | } |
| 5497 | } |
| 5498 | // Make sure we didn't create any zero-length spans |
| 5499 | if (first) first = clearEmptySpans(first); |
| 5500 | if (last && last != first) last = clearEmptySpans(last); |
| 5501 | |
| 5502 | var newMarkers = [first]; |
| 5503 | if (!sameLine) { |
| 5504 | // Fill gap with whole-line-spans |
| 5505 | var gap = change.text.length - 2, gapMarkers; |
| 5506 | if (gap > 0 && first) |
| 5507 | for (var i = 0; i < first.length; ++i) |
| 5508 | if (first[i].to == null) |
| 5509 | (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null)); |
| 5510 | for (var i = 0; i < gap; ++i) |
| 5511 | newMarkers.push(gapMarkers); |
| 5512 | newMarkers.push(last); |
| 5513 | } |
| 5514 | return newMarkers; |
| 5515 | } |
| 5516 | |
| 5517 | // Remove spans that are empty and don't have a clearWhenEmpty |
| 5518 | // option of false. |
| 5519 | function clearEmptySpans(spans) { |
| 5520 | for (var i = 0; i < spans.length; ++i) { |
| 5521 | var span = spans[i]; |
| 5522 | if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) |
| 5523 | spans.splice(i--, 1); |
| 5524 | } |
| 5525 | if (!spans.length) return null; |
| 5526 | return spans; |
| 5527 | } |
| 5528 | |
| 5529 | // Used for un/re-doing changes from the history. Combines the |
| 5530 | // result of computing the existing spans with the set of spans that |
| 5531 | // existed in the history (so that deleting around a span and then |
| 5532 | // undoing brings back the span). |
| 5533 | function mergeOldSpans(doc, change) { |
| 5534 | var old = getOldSpans(doc, change); |
| 5535 | var stretched = stretchSpansOverChange(doc, change); |
| 5536 | if (!old) return stretched; |
| 5537 | if (!stretched) return old; |
| 5538 | |
| 5539 | for (var i = 0; i < old.length; ++i) { |
| 5540 | var oldCur = old[i], stretchCur = stretched[i]; |
| 5541 | if (oldCur && stretchCur) { |
| 5542 | spans: for (var j = 0; j < stretchCur.length; ++j) { |
| 5543 | var span = stretchCur[j]; |
| 5544 | for (var k = 0; k < oldCur.length; ++k) |
| 5545 | if (oldCur[k].marker == span.marker) continue spans; |
| 5546 | oldCur.push(span); |
| 5547 | } |
| 5548 | } else if (stretchCur) { |
| 5549 | old[i] = stretchCur; |
| 5550 | } |
| 5551 | } |
| 5552 | return old; |
| 5553 | } |
| 5554 | |
| 5555 | // Used to 'clip' out readOnly ranges when making a change. |
| 5556 | function removeReadOnlyRanges(doc, from, to) { |
| 5557 | var markers = null; |
| 5558 | doc.iter(from.line, to.line + 1, function(line) { |
| 5559 | if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) { |
| 5560 | var mark = line.markedSpans[i].marker; |
| 5561 | if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) |
| 5562 | (markers || (markers = [])).push(mark); |
| 5563 | } |
| 5564 | }); |
| 5565 | if (!markers) return null; |
| 5566 | var parts = [{from: from, to: to}]; |
| 5567 | for (var i = 0; i < markers.length; ++i) { |
| 5568 | var mk = markers[i], m = mk.find(0); |
| 5569 | for (var j = 0; j < parts.length; ++j) { |
| 5570 | var p = parts[j]; |
| 5571 | if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue; |
| 5572 | var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to); |
| 5573 | if (dfrom < 0 || !mk.inclusiveLeft && !dfrom) |
| 5574 | newParts.push({from: p.from, to: m.from}); |
| 5575 | if (dto > 0 || !mk.inclusiveRight && !dto) |
| 5576 | newParts.push({from: m.to, to: p.to}); |
| 5577 | parts.splice.apply(parts, newParts); |
| 5578 | j += newParts.length - 1; |
| 5579 | } |
| 5580 | } |
| 5581 | return parts; |
| 5582 | } |
| 5583 | |
| 5584 | // Connect or disconnect spans from a line. |
| 5585 | function detachMarkedSpans(line) { |
| 5586 | var spans = line.markedSpans; |
| 5587 | if (!spans) return; |
| 5588 | for (var i = 0; i < spans.length; ++i) |
| 5589 | spans[i].marker.detachLine(line); |
| 5590 | line.markedSpans = null; |
| 5591 | } |
| 5592 | function attachMarkedSpans(line, spans) { |
| 5593 | if (!spans) return; |
| 5594 | for (var i = 0; i < spans.length; ++i) |
| 5595 | spans[i].marker.attachLine(line); |
| 5596 | line.markedSpans = spans; |
| 5597 | } |
| 5598 | |
| 5599 | // Helpers used when computing which overlapping collapsed span |
| 5600 | // counts as the larger one. |
| 5601 | function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; } |
| 5602 | function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; } |
| 5603 | |
| 5604 | // Returns a number indicating which of two overlapping collapsed |
| 5605 | // spans is larger (and thus includes the other). Falls back to |
| 5606 | // comparing ids when the spans cover exactly the same range. |
| 5607 | function compareCollapsedMarkers(a, b) { |
| 5608 | var lenDiff = a.lines.length - b.lines.length; |
| 5609 | if (lenDiff != 0) return lenDiff; |
| 5610 | var aPos = a.find(), bPos = b.find(); |
| 5611 | var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b); |
| 5612 | if (fromCmp) return -fromCmp; |
| 5613 | var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b); |
| 5614 | if (toCmp) return toCmp; |
| 5615 | return b.id - a.id; |
| 5616 | } |
| 5617 | |
| 5618 | // Find out whether a line ends or starts in a collapsed span. If |
| 5619 | // so, return the marker for that span. |
| 5620 | function collapsedSpanAtSide(line, start) { |
| 5621 | var sps = sawCollapsedSpans && line.markedSpans, found; |
| 5622 | if (sps) for (var sp, i = 0; i < sps.length; ++i) { |
| 5623 | sp = sps[i]; |
| 5624 | if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && |
| 5625 | (!found || compareCollapsedMarkers(found, sp.marker) < 0)) |
| 5626 | found = sp.marker; |
| 5627 | } |
| 5628 | return found; |
| 5629 | } |
| 5630 | function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); } |
| 5631 | function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); } |
| 5632 | |
| 5633 | // Test whether there exists a collapsed span that partially |
| 5634 | // overlaps (covers the start or end, but not both) of a new span. |
| 5635 | // Such overlap is not allowed. |
| 5636 | function conflictingCollapsedRange(doc, lineNo, from, to, marker) { |
| 5637 | var line = getLine(doc, lineNo); |
| 5638 | var sps = sawCollapsedSpans && line.markedSpans; |
| 5639 | if (sps) for (var i = 0; i < sps.length; ++i) { |
| 5640 | var sp = sps[i]; |
| 5641 | if (!sp.marker.collapsed) continue; |
| 5642 | var found = sp.marker.find(0); |
| 5643 | var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker); |
| 5644 | var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker); |
| 5645 | if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue; |
| 5646 | if (fromCmp <= 0 && (cmp(found.to, from) > 0 || (sp.marker.inclusiveRight && marker.inclusiveLeft)) || |
| 5647 | fromCmp >= 0 && (cmp(found.from, to) < 0 || (sp.marker.inclusiveLeft && marker.inclusiveRight))) |
| 5648 | return true; |
| 5649 | } |
| 5650 | } |
| 5651 | |
| 5652 | // A visual line is a line as drawn on the screen. Folding, for |
| 5653 | // example, can cause multiple logical lines to appear on the same |
| 5654 | // visual line. This finds the start of the visual line that the |
| 5655 | // given line is part of (usually that is the line itself). |
| 5656 | function visualLine(line) { |
| 5657 | var merged; |
| 5658 | while (merged = collapsedSpanAtStart(line)) |
| 5659 | line = merged.find(-1, true).line; |
| 5660 | return line; |
| 5661 | } |
| 5662 | |
| 5663 | // Returns an array of logical lines that continue the visual line |
| 5664 | // started by the argument, or undefined if there are no such lines. |
| 5665 | function visualLineContinued(line) { |
| 5666 | var merged, lines; |
| 5667 | while (merged = collapsedSpanAtEnd(line)) { |
| 5668 | line = merged.find(1, true).line; |
| 5669 | (lines || (lines = [])).push(line); |
| 5670 | } |
| 5671 | return lines; |
| 5672 | } |
| 5673 | |
| 5674 | // Get the line number of the start of the visual line that the |
| 5675 | // given line number is part of. |
| 5676 | function visualLineNo(doc, lineN) { |
| 5677 | var line = getLine(doc, lineN), vis = visualLine(line); |
| 5678 | if (line == vis) return lineN; |
| 5679 | return lineNo(vis); |
| 5680 | } |
| 5681 | // Get the line number of the start of the next visual line after |
| 5682 | // the given line. |
| 5683 | function visualLineEndNo(doc, lineN) { |
| 5684 | if (lineN > doc.lastLine()) return lineN; |
| 5685 | var line = getLine(doc, lineN), merged; |
| 5686 | if (!lineIsHidden(doc, line)) return lineN; |
| 5687 | while (merged = collapsedSpanAtEnd(line)) |
| 5688 | line = merged.find(1, true).line; |
| 5689 | return lineNo(line) + 1; |
| 5690 | } |
| 5691 | |
| 5692 | // Compute whether a line is hidden. Lines count as hidden when they |
| 5693 | // are part of a visual line that starts with another line, or when |
| 5694 | // they are entirely covered by collapsed, non-widget span. |
| 5695 | function lineIsHidden(doc, line) { |
| 5696 | var sps = sawCollapsedSpans && line.markedSpans; |
| 5697 | if (sps) for (var sp, i = 0; i < sps.length; ++i) { |
| 5698 | sp = sps[i]; |
| 5699 | if (!sp.marker.collapsed) continue; |
| 5700 | if (sp.from == null) return true; |
| 5701 | if (sp.marker.widgetNode) continue; |
| 5702 | if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) |
| 5703 | return true; |
| 5704 | } |
| 5705 | } |
| 5706 | function lineIsHiddenInner(doc, line, span) { |
| 5707 | if (span.to == null) { |
| 5708 | var end = span.marker.find(1, true); |
| 5709 | return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker)); |
| 5710 | } |
| 5711 | if (span.marker.inclusiveRight && span.to == line.text.length) |
| 5712 | return true; |
| 5713 | for (var sp, i = 0; i < line.markedSpans.length; ++i) { |
| 5714 | sp = line.markedSpans[i]; |
| 5715 | if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to && |
| 5716 | (sp.to == null || sp.to != span.from) && |
| 5717 | (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && |
| 5718 | lineIsHiddenInner(doc, line, sp)) return true; |
| 5719 | } |
| 5720 | } |
| 5721 | |
| 5722 | // LINE WIDGETS |
| 5723 | |
| 5724 | // Line widgets are block elements displayed above or below a line. |
| 5725 | |
| 5726 | var LineWidget = CodeMirror.LineWidget = function(cm, node, options) { |
| 5727 | if (options) for (var opt in options) if (options.hasOwnProperty(opt)) |
| 5728 | this[opt] = options[opt]; |
| 5729 | this.cm = cm; |
| 5730 | this.node = node; |
| 5731 | }; |
| 5732 | eventMixin(LineWidget); |
| 5733 | |
| 5734 | function adjustScrollWhenAboveVisible(cm, line, diff) { |
| 5735 | if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop)) |
| 5736 | addToScrollPos(cm, null, diff); |
| 5737 | } |
| 5738 | |
| 5739 | LineWidget.prototype.clear = function() { |
| 5740 | var cm = this.cm, ws = this.line.widgets, line = this.line, no = lineNo(line); |
| 5741 | if (no == null || !ws) return; |
| 5742 | for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1); |
| 5743 | if (!ws.length) line.widgets = null; |
| 5744 | var height = widgetHeight(this); |
| 5745 | runInOp(cm, function() { |
| 5746 | adjustScrollWhenAboveVisible(cm, line, -height); |
| 5747 | regLineChange(cm, no, "widget"); |
| 5748 | updateLineHeight(line, Math.max(0, line.height - height)); |
| 5749 | }); |
| 5750 | }; |
| 5751 | LineWidget.prototype.changed = function() { |
| 5752 | var oldH = this.height, cm = this.cm, line = this.line; |
| 5753 | this.height = null; |
| 5754 | var diff = widgetHeight(this) - oldH; |
| 5755 | if (!diff) return; |
| 5756 | runInOp(cm, function() { |
| 5757 | cm.curOp.forceUpdate = true; |
| 5758 | adjustScrollWhenAboveVisible(cm, line, diff); |
| 5759 | updateLineHeight(line, line.height + diff); |
| 5760 | }); |
| 5761 | }; |
| 5762 | |
| 5763 | function widgetHeight(widget) { |
| 5764 | if (widget.height != null) return widget.height; |
| 5765 | if (!contains(document.body, widget.node)) { |
| 5766 | var parentStyle = "position: relative;"; |
| 5767 | if (widget.coverGutter) |
| 5768 | parentStyle += "margin-left: -" + widget.cm.getGutterElement().offsetWidth + "px;"; |
| 5769 | removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, parentStyle)); |
| 5770 | } |
| 5771 | return widget.height = widget.node.offsetHeight; |
| 5772 | } |
| 5773 | |
| 5774 | function addLineWidget(cm, handle, node, options) { |
| 5775 | var widget = new LineWidget(cm, node, options); |
| 5776 | if (widget.noHScroll) cm.display.alignWidgets = true; |
| 5777 | changeLine(cm.doc, handle, "widget", function(line) { |
| 5778 | var widgets = line.widgets || (line.widgets = []); |
| 5779 | if (widget.insertAt == null) widgets.push(widget); |
| 5780 | else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); |
| 5781 | widget.line = line; |
| 5782 | if (!lineIsHidden(cm.doc, line)) { |
| 5783 | var aboveVisible = heightAtLine(line) < cm.doc.scrollTop; |
| 5784 | updateLineHeight(line, line.height + widgetHeight(widget)); |
| 5785 | if (aboveVisible) addToScrollPos(cm, null, widget.height); |
| 5786 | cm.curOp.forceUpdate = true; |
| 5787 | } |
| 5788 | return true; |
| 5789 | }); |
| 5790 | return widget; |
| 5791 | } |
| 5792 | |
| 5793 | // LINE DATA STRUCTURE |
| 5794 | |
| 5795 | // Line objects. These hold state related to a line, including |
| 5796 | // highlighting info (the styles array). |
| 5797 | var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) { |
| 5798 | this.text = text; |
| 5799 | attachMarkedSpans(this, markedSpans); |
| 5800 | this.height = estimateHeight ? estimateHeight(this) : 1; |
| 5801 | }; |
| 5802 | eventMixin(Line); |
| 5803 | Line.prototype.lineNo = function() { return lineNo(this); }; |
| 5804 | |
| 5805 | // Change the content (text, markers) of a line. Automatically |
| 5806 | // invalidates cached information and tries to re-estimate the |
| 5807 | // line's height. |
| 5808 | function updateLine(line, text, markedSpans, estimateHeight) { |
| 5809 | line.text = text; |
| 5810 | if (line.stateAfter) line.stateAfter = null; |
| 5811 | if (line.styles) line.styles = null; |
| 5812 | if (line.order != null) line.order = null; |
| 5813 | detachMarkedSpans(line); |
| 5814 | attachMarkedSpans(line, markedSpans); |
| 5815 | var estHeight = estimateHeight ? estimateHeight(line) : 1; |
| 5816 | if (estHeight != line.height) updateLineHeight(line, estHeight); |
| 5817 | } |
| 5818 | |
| 5819 | // Detach a line from the document tree and its markers. |
| 5820 | function cleanUpLine(line) { |
| 5821 | line.parent = null; |
| 5822 | detachMarkedSpans(line); |
| 5823 | } |
| 5824 | |
| 5825 | function extractLineClasses(type, output) { |
| 5826 | if (type) for (;;) { |
| 5827 | var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/); |
| 5828 | if (!lineClass) break; |
| 5829 | type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length); |
| 5830 | var prop = lineClass[1] ? "bgClass" : "textClass"; |
| 5831 | if (output[prop] == null) |
| 5832 | output[prop] = lineClass[2]; |
| 5833 | else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop])) |
| 5834 | output[prop] += " " + lineClass[2]; |
| 5835 | } |
| 5836 | return type; |
| 5837 | } |
| 5838 | |
| 5839 | function callBlankLine(mode, state) { |
| 5840 | if (mode.blankLine) return mode.blankLine(state); |
| 5841 | if (!mode.innerMode) return; |
| 5842 | var inner = CodeMirror.innerMode(mode, state); |
| 5843 | if (inner.mode.blankLine) return inner.mode.blankLine(inner.state); |
| 5844 | } |
| 5845 | |
| 5846 | function readToken(mode, stream, state, inner) { |
| 5847 | for (var i = 0; i < 10; i++) { |
| 5848 | if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode; |
| 5849 | var style = mode.token(stream, state); |
| 5850 | if (stream.pos > stream.start) return style; |
| 5851 | } |
| 5852 | throw new Error("Mode " + mode.name + " failed to advance stream."); |
| 5853 | } |
| 5854 | |
| 5855 | // Utility for getTokenAt and getLineTokens |
| 5856 | function takeToken(cm, pos, precise, asArray) { |
| 5857 | function getObj(copy) { |
| 5858 | return {start: stream.start, end: stream.pos, |
| 5859 | string: stream.current(), |
| 5860 | type: style || null, |
| 5861 | state: copy ? copyState(doc.mode, state) : state}; |
| 5862 | } |
| 5863 | |
| 5864 | var doc = cm.doc, mode = doc.mode, style; |
| 5865 | pos = clipPos(doc, pos); |
| 5866 | var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise); |
| 5867 | var stream = new StringStream(line.text, cm.options.tabSize), tokens; |
| 5868 | if (asArray) tokens = []; |
| 5869 | while ((asArray || stream.pos < pos.ch) && !stream.eol()) { |
| 5870 | stream.start = stream.pos; |
| 5871 | style = readToken(mode, stream, state); |
| 5872 | if (asArray) tokens.push(getObj(true)); |
| 5873 | } |
| 5874 | return asArray ? tokens : getObj(); |
| 5875 | } |
| 5876 | |
| 5877 | // Run the given mode's parser over a line, calling f for each token. |
| 5878 | function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) { |
| 5879 | var flattenSpans = mode.flattenSpans; |
| 5880 | if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; |
| 5881 | var curStart = 0, curStyle = null; |
| 5882 | var stream = new StringStream(text, cm.options.tabSize), style; |
| 5883 | var inner = cm.options.addModeClass && [null]; |
| 5884 | if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses); |
| 5885 | while (!stream.eol()) { |
| 5886 | if (stream.pos > cm.options.maxHighlightLength) { |
| 5887 | flattenSpans = false; |
| 5888 | if (forceToEnd) processLine(cm, text, state, stream.pos); |
| 5889 | stream.pos = text.length; |
| 5890 | style = null; |
| 5891 | } else { |
| 5892 | style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses); |
| 5893 | } |
| 5894 | if (inner) { |
| 5895 | var mName = inner[0].name; |
| 5896 | if (mName) style = "m-" + (style ? mName + " " + style : mName); |
| 5897 | } |
| 5898 | if (!flattenSpans || curStyle != style) { |
| 5899 | if (curStart < stream.start) f(stream.start, curStyle); |
| 5900 | curStart = stream.start; curStyle = style; |
| 5901 | } |
| 5902 | stream.start = stream.pos; |
| 5903 | } |
| 5904 | while (curStart < stream.pos) { |
| 5905 | // Webkit seems to refuse to render text nodes longer than 57444 characters |
| 5906 | var pos = Math.min(stream.pos, curStart + 50000); |
| 5907 | f(pos, curStyle); |
| 5908 | curStart = pos; |
| 5909 | } |
| 5910 | } |
| 5911 | |
| 5912 | // Compute a style array (an array starting with a mode generation |
| 5913 | // -- for invalidation -- followed by pairs of end positions and |
| 5914 | // style strings), which is used to highlight the tokens on the |
| 5915 | // line. |
| 5916 | function highlightLine(cm, line, state, forceToEnd) { |
| 5917 | // A styles array always starts with a number identifying the |
| 5918 | // mode/overlays that it is based on (for easy invalidation). |
| 5919 | var st = [cm.state.modeGen], lineClasses = {}; |
| 5920 | // Compute the base array of styles |
| 5921 | runMode(cm, line.text, cm.doc.mode, state, function(end, style) { |
| 5922 | st.push(end, style); |
| 5923 | }, lineClasses, forceToEnd); |
| 5924 | |
| 5925 | // Run overlays, adjust style array. |
| 5926 | for (var o = 0; o < cm.state.overlays.length; ++o) { |
| 5927 | var overlay = cm.state.overlays[o], i = 1, at = 0; |
| 5928 | runMode(cm, line.text, overlay.mode, true, function(end, style) { |
| 5929 | var start = i; |
| 5930 | // Ensure there's a token end at the current position, and that i points at it |
| 5931 | while (at < end) { |
| 5932 | var i_end = st[i]; |
| 5933 | if (i_end > end) |
| 5934 | st.splice(i, 1, end, st[i+1], i_end); |
| 5935 | i += 2; |
| 5936 | at = Math.min(end, i_end); |
| 5937 | } |
| 5938 | if (!style) return; |
| 5939 | if (overlay.opaque) { |
| 5940 | st.splice(start, i - start, end, "cm-overlay " + style); |
| 5941 | i = start + 2; |
| 5942 | } else { |
| 5943 | for (; start < i; start += 2) { |
| 5944 | var cur = st[start+1]; |
| 5945 | st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style; |
| 5946 | } |
| 5947 | } |
| 5948 | }, lineClasses); |
| 5949 | } |
| 5950 | |
| 5951 | return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}; |
| 5952 | } |
| 5953 | |
| 5954 | function getLineStyles(cm, line, updateFrontier) { |
| 5955 | if (!line.styles || line.styles[0] != cm.state.modeGen) { |
| 5956 | var result = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); |
| 5957 | line.styles = result.styles; |
| 5958 | if (result.classes) line.styleClasses = result.classes; |
| 5959 | else if (line.styleClasses) line.styleClasses = null; |
| 5960 | if (updateFrontier === cm.doc.frontier) cm.doc.frontier++; |
| 5961 | } |
| 5962 | return line.styles; |
| 5963 | } |
| 5964 | |
| 5965 | // Lightweight form of highlight -- proceed over this line and |
| 5966 | // update state, but don't save a style array. Used for lines that |
| 5967 | // aren't currently visible. |
| 5968 | function processLine(cm, text, state, startAt) { |
| 5969 | var mode = cm.doc.mode; |
| 5970 | var stream = new StringStream(text, cm.options.tabSize); |
| 5971 | stream.start = stream.pos = startAt || 0; |
| 5972 | if (text == "") callBlankLine(mode, state); |
| 5973 | while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { |
| 5974 | readToken(mode, stream, state); |
| 5975 | stream.start = stream.pos; |
| 5976 | } |
| 5977 | } |
| 5978 | |
| 5979 | // Convert a style as returned by a mode (either null, or a string |
| 5980 | // containing one or more styles) to a CSS style. This is cached, |
| 5981 | // and also looks for line-wide styles. |
| 5982 | var styleToClassCache = {}, styleToClassCacheWithMode = {}; |
| 5983 | function interpretTokenStyle(style, options) { |
| 5984 | if (!style || /^\s*$/.test(style)) return null; |
| 5985 | var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache; |
| 5986 | return cache[style] || |
| 5987 | (cache[style] = style.replace(/\S+/g, "cm-$&")); |
| 5988 | } |
| 5989 | |
| 5990 | // Render the DOM representation of the text of a line. Also builds |
| 5991 | // up a 'line map', which points at the DOM nodes that represent |
| 5992 | // specific stretches of text, and is used by the measuring code. |
| 5993 | // The returned object contains the DOM node, this map, and |
| 5994 | // information about line-wide styles that were set by the mode. |
| 5995 | function buildLineContent(cm, lineView) { |
| 5996 | // The padding-right forces the element to have a 'border', which |
| 5997 | // is needed on Webkit to be able to get line-level bounding |
| 5998 | // rectangles for it (in measureChar). |
| 5999 | var content = elt("span", null, null, webkit ? "padding-right: .1px" : null); |
| 6000 | var builder = {pre: elt("pre", [content]), content: content, col: 0, pos: 0, cm: cm}; |
| 6001 | lineView.measure = {}; |
| 6002 | |
| 6003 | // Iterate over the logical lines that make up this visual line. |
| 6004 | for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) { |
| 6005 | var line = i ? lineView.rest[i - 1] : lineView.line, order; |
| 6006 | builder.pos = 0; |
| 6007 | builder.addToken = buildToken; |
| 6008 | // Optionally wire in some hacks into the token-rendering |
| 6009 | // algorithm, to deal with browser quirks. |
| 6010 | if ((ie || webkit) && cm.getOption("lineWrapping")) |
| 6011 | builder.addToken = buildTokenSplitSpaces(builder.addToken); |
| 6012 | if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line))) |
| 6013 | builder.addToken = buildTokenBadBidi(builder.addToken, order); |
| 6014 | builder.map = []; |
| 6015 | var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line); |
| 6016 | insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate)); |
| 6017 | if (line.styleClasses) { |
| 6018 | if (line.styleClasses.bgClass) |
| 6019 | builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || ""); |
| 6020 | if (line.styleClasses.textClass) |
| 6021 | builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || ""); |
| 6022 | } |
| 6023 | |
| 6024 | // Ensure at least a single node is present, for measuring. |
| 6025 | if (builder.map.length == 0) |
| 6026 | builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); |
| 6027 | |
| 6028 | // Store the map and a cache object for the current logical line |
| 6029 | if (i == 0) { |
| 6030 | lineView.measure.map = builder.map; |
| 6031 | lineView.measure.cache = {}; |
| 6032 | } else { |
| 6033 | (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map); |
| 6034 | (lineView.measure.caches || (lineView.measure.caches = [])).push({}); |
| 6035 | } |
| 6036 | } |
| 6037 | |
| 6038 | // See issue #2901 |
| 6039 | if (webkit && /\bcm-tab\b/.test(builder.content.lastChild.className)) |
| 6040 | builder.content.className = "cm-tab-wrap-hack"; |
| 6041 | |
| 6042 | signal(cm, "renderLine", cm, lineView.line, builder.pre); |
| 6043 | if (builder.pre.className) |
| 6044 | builder.textClass = joinClasses(builder.pre.className, builder.textClass || ""); |
| 6045 | |
| 6046 | return builder; |
| 6047 | } |
| 6048 | |
| 6049 | function defaultSpecialCharPlaceholder(ch) { |
| 6050 | var token = elt("span", "\u2022", "cm-invalidchar"); |
| 6051 | token.title = "\\u" + ch.charCodeAt(0).toString(16); |
| 6052 | return token; |
| 6053 | } |
| 6054 | |
| 6055 | // Build up the DOM representation for a single token, and add it to |
| 6056 | // the line map. Takes care to render special characters separately. |
| 6057 | function buildToken(builder, text, style, startStyle, endStyle, title) { |
| 6058 | if (!text) return; |
| 6059 | var special = builder.cm.options.specialChars, mustWrap = false; |
| 6060 | if (!special.test(text)) { |
| 6061 | builder.col += text.length; |
| 6062 | var content = document.createTextNode(text); |
| 6063 | builder.map.push(builder.pos, builder.pos + text.length, content); |
| 6064 | if (ie && ie_version < 9) mustWrap = true; |
| 6065 | builder.pos += text.length; |
| 6066 | } else { |
| 6067 | var content = document.createDocumentFragment(), pos = 0; |
| 6068 | while (true) { |
| 6069 | special.lastIndex = pos; |
| 6070 | var m = special.exec(text); |
| 6071 | var skipped = m ? m.index - pos : text.length - pos; |
| 6072 | if (skipped) { |
| 6073 | var txt = document.createTextNode(text.slice(pos, pos + skipped)); |
| 6074 | if (ie && ie_version < 9) content.appendChild(elt("span", [txt])); |
| 6075 | else content.appendChild(txt); |
| 6076 | builder.map.push(builder.pos, builder.pos + skipped, txt); |
| 6077 | builder.col += skipped; |
| 6078 | builder.pos += skipped; |
| 6079 | } |
| 6080 | if (!m) break; |
| 6081 | pos += skipped + 1; |
| 6082 | if (m[0] == "\t") { |
| 6083 | var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; |
| 6084 | var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); |
| 6085 | builder.col += tabWidth; |
| 6086 | } else { |
| 6087 | var txt = builder.cm.options.specialCharPlaceholder(m[0]); |
| 6088 | if (ie && ie_version < 9) content.appendChild(elt("span", [txt])); |
| 6089 | else content.appendChild(txt); |
| 6090 | builder.col += 1; |
| 6091 | } |
| 6092 | builder.map.push(builder.pos, builder.pos + 1, txt); |
| 6093 | builder.pos++; |
| 6094 | } |
| 6095 | } |
| 6096 | if (style || startStyle || endStyle || mustWrap) { |
| 6097 | var fullStyle = style || ""; |
| 6098 | if (startStyle) fullStyle += startStyle; |
| 6099 | if (endStyle) fullStyle += endStyle; |
| 6100 | var token = elt("span", [content], fullStyle); |
| 6101 | if (title) token.title = title; |
| 6102 | return builder.content.appendChild(token); |
| 6103 | } |
| 6104 | builder.content.appendChild(content); |
| 6105 | } |
| 6106 | |
| 6107 | function buildTokenSplitSpaces(inner) { |
| 6108 | function split(old) { |
| 6109 | var out = " "; |
| 6110 | for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; |
| 6111 | out += " "; |
| 6112 | return out; |
| 6113 | } |
| 6114 | return function(builder, text, style, startStyle, endStyle, title) { |
| 6115 | inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title); |
| 6116 | }; |
| 6117 | } |
| 6118 | |
| 6119 | // Work around nonsense dimensions being reported for stretches of |
| 6120 | // right-to-left text. |
| 6121 | function buildTokenBadBidi(inner, order) { |
| 6122 | return function(builder, text, style, startStyle, endStyle, title) { |
| 6123 | style = style ? style + " cm-force-border" : "cm-force-border"; |
| 6124 | var start = builder.pos, end = start + text.length; |
| 6125 | for (;;) { |
| 6126 | // Find the part that overlaps with the start of this text |
| 6127 | for (var i = 0; i < order.length; i++) { |
| 6128 | var part = order[i]; |
| 6129 | if (part.to > start && part.from <= start) break; |
| 6130 | } |
| 6131 | if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title); |
| 6132 | inner(builder, text.slice(0, part.to - start), style, startStyle, null, title); |
| 6133 | startStyle = null; |
| 6134 | text = text.slice(part.to - start); |
| 6135 | start = part.to; |
| 6136 | } |
| 6137 | }; |
| 6138 | } |
| 6139 | |
| 6140 | function buildCollapsedSpan(builder, size, marker, ignoreWidget) { |
| 6141 | var widget = !ignoreWidget && marker.widgetNode; |
| 6142 | if (widget) { |
| 6143 | builder.map.push(builder.pos, builder.pos + size, widget); |
| 6144 | builder.content.appendChild(widget); |
| 6145 | } |
| 6146 | builder.pos += size; |
| 6147 | } |
| 6148 | |
| 6149 | // Outputs a number of spans to make up a line, taking highlighting |
| 6150 | // and marked text into account. |
| 6151 | function insertLineContent(line, builder, styles) { |
| 6152 | var spans = line.markedSpans, allText = line.text, at = 0; |
| 6153 | if (!spans) { |
| 6154 | for (var i = 1; i < styles.length; i+=2) |
| 6155 | builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options)); |
| 6156 | return; |
| 6157 | } |
| 6158 | |
| 6159 | var len = allText.length, pos = 0, i = 1, text = "", style; |
| 6160 | var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed; |
| 6161 | for (;;) { |
| 6162 | if (nextChange == pos) { // Update current marker set |
| 6163 | spanStyle = spanEndStyle = spanStartStyle = title = ""; |
| 6164 | collapsed = null; nextChange = Infinity; |
| 6165 | var foundBookmarks = []; |
| 6166 | for (var j = 0; j < spans.length; ++j) { |
| 6167 | var sp = spans[j], m = sp.marker; |
| 6168 | if (sp.from <= pos && (sp.to == null || sp.to > pos)) { |
| 6169 | if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } |
| 6170 | if (m.className) spanStyle += " " + m.className; |
| 6171 | if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; |
| 6172 | if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; |
| 6173 | if (m.title && !title) title = m.title; |
| 6174 | if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) |
| 6175 | collapsed = sp; |
| 6176 | } else if (sp.from > pos && nextChange > sp.from) { |
| 6177 | nextChange = sp.from; |
| 6178 | } |
| 6179 | if (m.type == "bookmark" && sp.from == pos && m.widgetNode) foundBookmarks.push(m); |
| 6180 | } |
| 6181 | if (collapsed && (collapsed.from || 0) == pos) { |
| 6182 | buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos, |
| 6183 | collapsed.marker, collapsed.from == null); |
| 6184 | if (collapsed.to == null) return; |
| 6185 | } |
| 6186 | if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j) |
| 6187 | buildCollapsedSpan(builder, 0, foundBookmarks[j]); |
| 6188 | } |
| 6189 | if (pos >= len) break; |
| 6190 | |
| 6191 | var upto = Math.min(len, nextChange); |
| 6192 | while (true) { |
| 6193 | if (text) { |
| 6194 | var end = pos + text.length; |
| 6195 | if (!collapsed) { |
| 6196 | var tokenText = end > upto ? text.slice(0, upto - pos) : text; |
| 6197 | builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, |
| 6198 | spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title); |
| 6199 | } |
| 6200 | if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} |
| 6201 | pos = end; |
| 6202 | spanStartStyle = ""; |
| 6203 | } |
| 6204 | text = allText.slice(at, at = styles[i++]); |
| 6205 | style = interpretTokenStyle(styles[i++], builder.cm.options); |
| 6206 | } |
| 6207 | } |
| 6208 | } |
| 6209 | |
| 6210 | // DOCUMENT DATA STRUCTURE |
| 6211 | |
| 6212 | // By default, updates that start and end at the beginning of a line |
| 6213 | // are treated specially, in order to make the association of line |
| 6214 | // widgets and marker elements with the text behave more intuitive. |
| 6215 | function isWholeLineUpdate(doc, change) { |
| 6216 | return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && |
| 6217 | (!doc.cm || doc.cm.options.wholeLineUpdateBefore); |
| 6218 | } |
| 6219 | |
| 6220 | // Perform a change on the document data structure. |
| 6221 | function updateDoc(doc, change, markedSpans, estimateHeight) { |
| 6222 | function spansFor(n) {return markedSpans ? markedSpans[n] : null;} |
| 6223 | function update(line, text, spans) { |
| 6224 | updateLine(line, text, spans, estimateHeight); |
| 6225 | signalLater(line, "change", line, change); |
| 6226 | } |
| 6227 | |
| 6228 | var from = change.from, to = change.to, text = change.text; |
| 6229 | var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); |
| 6230 | var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; |
| 6231 | |
| 6232 | // Adjust the line structure |
| 6233 | if (isWholeLineUpdate(doc, change)) { |
| 6234 | // This is a whole-line replace. Treated specially to make |
| 6235 | // sure line objects move the way they are supposed to. |
| 6236 | for (var i = 0, added = []; i < text.length - 1; ++i) |
| 6237 | added.push(new Line(text[i], spansFor(i), estimateHeight)); |
| 6238 | update(lastLine, lastLine.text, lastSpans); |
| 6239 | if (nlines) doc.remove(from.line, nlines); |
| 6240 | if (added.length) doc.insert(from.line, added); |
| 6241 | } else if (firstLine == lastLine) { |
| 6242 | if (text.length == 1) { |
| 6243 | update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); |
| 6244 | } else { |
| 6245 | for (var added = [], i = 1; i < text.length - 1; ++i) |
| 6246 | added.push(new Line(text[i], spansFor(i), estimateHeight)); |
| 6247 | added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); |
| 6248 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); |
| 6249 | doc.insert(from.line + 1, added); |
| 6250 | } |
| 6251 | } else if (text.length == 1) { |
| 6252 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); |
| 6253 | doc.remove(from.line + 1, nlines); |
| 6254 | } else { |
| 6255 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); |
| 6256 | update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); |
| 6257 | for (var i = 1, added = []; i < text.length - 1; ++i) |
| 6258 | added.push(new Line(text[i], spansFor(i), estimateHeight)); |
| 6259 | if (nlines > 1) doc.remove(from.line + 1, nlines - 1); |
| 6260 | doc.insert(from.line + 1, added); |
| 6261 | } |
| 6262 | |
| 6263 | signalLater(doc, "change", doc, change); |
| 6264 | } |
| 6265 | |
| 6266 | // The document is represented as a BTree consisting of leaves, with |
| 6267 | // chunk of lines in them, and branches, with up to ten leaves or |
| 6268 | // other branch nodes below them. The top node is always a branch |
| 6269 | // node, and is the document object itself (meaning it has |
| 6270 | // additional methods and properties). |
| 6271 | // |
| 6272 | // All nodes have parent links. The tree is used both to go from |
| 6273 | // line numbers to line objects, and to go from objects to numbers. |
| 6274 | // It also indexes by height, and is used to convert between height |
| 6275 | // and line object, and to find the total height of the document. |
| 6276 | // |
| 6277 | // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html |
| 6278 | |
| 6279 | function LeafChunk(lines) { |
| 6280 | this.lines = lines; |
| 6281 | this.parent = null; |
| 6282 | for (var i = 0, height = 0; i < lines.length; ++i) { |
| 6283 | lines[i].parent = this; |
| 6284 | height += lines[i].height; |
| 6285 | } |
| 6286 | this.height = height; |
| 6287 | } |
| 6288 | |
| 6289 | LeafChunk.prototype = { |
| 6290 | chunkSize: function() { return this.lines.length; }, |
| 6291 | // Remove the n lines at offset 'at'. |
| 6292 | removeInner: function(at, n) { |
| 6293 | for (var i = at, e = at + n; i < e; ++i) { |
| 6294 | var line = this.lines[i]; |
| 6295 | this.height -= line.height; |
| 6296 | cleanUpLine(line); |
| 6297 | signalLater(line, "delete"); |
| 6298 | } |
| 6299 | this.lines.splice(at, n); |
| 6300 | }, |
| 6301 | // Helper used to collapse a small branch into a single leaf. |
| 6302 | collapse: function(lines) { |
| 6303 | lines.push.apply(lines, this.lines); |
| 6304 | }, |
| 6305 | // Insert the given array of lines at offset 'at', count them as |
| 6306 | // having the given height. |
| 6307 | insertInner: function(at, lines, height) { |
| 6308 | this.height += height; |
| 6309 | this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); |
| 6310 | for (var i = 0; i < lines.length; ++i) lines[i].parent = this; |
| 6311 | }, |
| 6312 | // Used to iterate over a part of the tree. |
| 6313 | iterN: function(at, n, op) { |
| 6314 | for (var e = at + n; at < e; ++at) |
| 6315 | if (op(this.lines[at])) return true; |
| 6316 | } |
| 6317 | }; |
| 6318 | |
| 6319 | function BranchChunk(children) { |
| 6320 | this.children = children; |
| 6321 | var size = 0, height = 0; |
| 6322 | for (var i = 0; i < children.length; ++i) { |
| 6323 | var ch = children[i]; |
| 6324 | size += ch.chunkSize(); height += ch.height; |
| 6325 | ch.parent = this; |
| 6326 | } |
| 6327 | this.size = size; |
| 6328 | this.height = height; |
| 6329 | this.parent = null; |
| 6330 | } |
| 6331 | |
| 6332 | BranchChunk.prototype = { |
| 6333 | chunkSize: function() { return this.size; }, |
| 6334 | removeInner: function(at, n) { |
| 6335 | this.size -= n; |
| 6336 | for (var i = 0; i < this.children.length; ++i) { |
| 6337 | var child = this.children[i], sz = child.chunkSize(); |
| 6338 | if (at < sz) { |
| 6339 | var rm = Math.min(n, sz - at), oldHeight = child.height; |
| 6340 | child.removeInner(at, rm); |
| 6341 | this.height -= oldHeight - child.height; |
| 6342 | if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } |
| 6343 | if ((n -= rm) == 0) break; |
| 6344 | at = 0; |
| 6345 | } else at -= sz; |
| 6346 | } |
| 6347 | // If the result is smaller than 25 lines, ensure that it is a |
| 6348 | // single leaf node. |
| 6349 | if (this.size - n < 25 && |
| 6350 | (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) { |
| 6351 | var lines = []; |
| 6352 | this.collapse(lines); |
| 6353 | this.children = [new LeafChunk(lines)]; |
| 6354 | this.children[0].parent = this; |
| 6355 | } |
| 6356 | }, |
| 6357 | collapse: function(lines) { |
| 6358 | for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines); |
| 6359 | }, |
| 6360 | insertInner: function(at, lines, height) { |
| 6361 | this.size += lines.length; |
| 6362 | this.height += height; |
| 6363 | for (var i = 0; i < this.children.length; ++i) { |
| 6364 | var child = this.children[i], sz = child.chunkSize(); |
| 6365 | if (at <= sz) { |
| 6366 | child.insertInner(at, lines, height); |
| 6367 | if (child.lines && child.lines.length > 50) { |
| 6368 | while (child.lines.length > 50) { |
| 6369 | var spilled = child.lines.splice(child.lines.length - 25, 25); |
| 6370 | var newleaf = new LeafChunk(spilled); |
| 6371 | child.height -= newleaf.height; |
| 6372 | this.children.splice(i + 1, 0, newleaf); |
| 6373 | newleaf.parent = this; |
| 6374 | } |
| 6375 | this.maybeSpill(); |
| 6376 | } |
| 6377 | break; |
| 6378 | } |
| 6379 | at -= sz; |
| 6380 | } |
| 6381 | }, |
| 6382 | // When a node has grown, check whether it should be split. |
| 6383 | maybeSpill: function() { |
| 6384 | if (this.children.length <= 10) return; |
| 6385 | var me = this; |
| 6386 | do { |
| 6387 | var spilled = me.children.splice(me.children.length - 5, 5); |
| 6388 | var sibling = new BranchChunk(spilled); |
| 6389 | if (!me.parent) { // Become the parent node |
| 6390 | var copy = new BranchChunk(me.children); |
| 6391 | copy.parent = me; |
| 6392 | me.children = [copy, sibling]; |
| 6393 | me = copy; |
| 6394 | } else { |
| 6395 | me.size -= sibling.size; |
| 6396 | me.height -= sibling.height; |
| 6397 | var myIndex = indexOf(me.parent.children, me); |
| 6398 | me.parent.children.splice(myIndex + 1, 0, sibling); |
| 6399 | } |
| 6400 | sibling.parent = me.parent; |
| 6401 | } while (me.children.length > 10); |
| 6402 | me.parent.maybeSpill(); |
| 6403 | }, |
| 6404 | iterN: function(at, n, op) { |
| 6405 | for (var i = 0; i < this.children.length; ++i) { |
| 6406 | var child = this.children[i], sz = child.chunkSize(); |
| 6407 | if (at < sz) { |
| 6408 | var used = Math.min(n, sz - at); |
| 6409 | if (child.iterN(at, used, op)) return true; |
| 6410 | if ((n -= used) == 0) break; |
| 6411 | at = 0; |
| 6412 | } else at -= sz; |
| 6413 | } |
| 6414 | } |
| 6415 | }; |
| 6416 | |
| 6417 | var nextDocId = 0; |
| 6418 | var Doc = CodeMirror.Doc = function(text, mode, firstLine) { |
| 6419 | if (!(this instanceof Doc)) return new Doc(text, mode, firstLine); |
| 6420 | if (firstLine == null) firstLine = 0; |
| 6421 | |
| 6422 | BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); |
| 6423 | this.first = firstLine; |
| 6424 | this.scrollTop = this.scrollLeft = 0; |
| 6425 | this.cantEdit = false; |
| 6426 | this.cleanGeneration = 1; |
| 6427 | this.frontier = firstLine; |
| 6428 | var start = Pos(firstLine, 0); |
| 6429 | this.sel = simpleSelection(start); |
| 6430 | this.history = new History(null); |
| 6431 | this.id = ++nextDocId; |
| 6432 | this.modeOption = mode; |
| 6433 | |
| 6434 | if (typeof text == "string") text = splitLines(text); |
| 6435 | updateDoc(this, {from: start, to: start, text: text}); |
| 6436 | setSelection(this, simpleSelection(start), sel_dontScroll); |
| 6437 | }; |
| 6438 | |
| 6439 | Doc.prototype = createObj(BranchChunk.prototype, { |
| 6440 | constructor: Doc, |
| 6441 | // Iterate over the document. Supports two forms -- with only one |
| 6442 | // argument, it calls that for each line in the document. With |
| 6443 | // three, it iterates over the range given by the first two (with |
| 6444 | // the second being non-inclusive). |
| 6445 | iter: function(from, to, op) { |
| 6446 | if (op) this.iterN(from - this.first, to - from, op); |
| 6447 | else this.iterN(this.first, this.first + this.size, from); |
| 6448 | }, |
| 6449 | |
| 6450 | // Non-public interface for adding and removing lines. |
| 6451 | insert: function(at, lines) { |
| 6452 | var height = 0; |
| 6453 | for (var i = 0; i < lines.length; ++i) height += lines[i].height; |
| 6454 | this.insertInner(at - this.first, lines, height); |
| 6455 | }, |
| 6456 | remove: function(at, n) { this.removeInner(at - this.first, n); }, |
| 6457 | |
| 6458 | // From here, the methods are part of the public interface. Most |
| 6459 | // are also available from CodeMirror (editor) instances. |
| 6460 | |
| 6461 | getValue: function(lineSep) { |
| 6462 | var lines = getLines(this, this.first, this.first + this.size); |
| 6463 | if (lineSep === false) return lines; |
| 6464 | return lines.join(lineSep || "\n"); |
| 6465 | }, |
| 6466 | setValue: docMethodOp(function(code) { |
| 6467 | var top = Pos(this.first, 0), last = this.first + this.size - 1; |
| 6468 | makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), |
| 6469 | text: splitLines(code), origin: "setValue"}, true); |
| 6470 | setSelection(this, simpleSelection(top)); |
| 6471 | }), |
| 6472 | replaceRange: function(code, from, to, origin) { |
| 6473 | from = clipPos(this, from); |
| 6474 | to = to ? clipPos(this, to) : from; |
| 6475 | replaceRange(this, code, from, to, origin); |
| 6476 | }, |
| 6477 | getRange: function(from, to, lineSep) { |
| 6478 | var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); |
| 6479 | if (lineSep === false) return lines; |
| 6480 | return lines.join(lineSep || "\n"); |
| 6481 | }, |
| 6482 | |
| 6483 | getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, |
| 6484 | |
| 6485 | getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, |
| 6486 | getLineNumber: function(line) {return lineNo(line);}, |
| 6487 | |
| 6488 | getLineHandleVisualStart: function(line) { |
| 6489 | if (typeof line == "number") line = getLine(this, line); |
| 6490 | return visualLine(line); |
| 6491 | }, |
| 6492 | |
| 6493 | lineCount: function() {return this.size;}, |
| 6494 | firstLine: function() {return this.first;}, |
| 6495 | lastLine: function() {return this.first + this.size - 1;}, |
| 6496 | |
| 6497 | clipPos: function(pos) {return clipPos(this, pos);}, |
| 6498 | |
| 6499 | getCursor: function(start) { |
| 6500 | var range = this.sel.primary(), pos; |
| 6501 | if (start == null || start == "head") pos = range.head; |
| 6502 | else if (start == "anchor") pos = range.anchor; |
| 6503 | else if (start == "end" || start == "to" || start === false) pos = range.to(); |
| 6504 | else pos = range.from(); |
| 6505 | return pos; |
| 6506 | }, |
| 6507 | listSelections: function() { return this.sel.ranges; }, |
| 6508 | somethingSelected: function() {return this.sel.somethingSelected();}, |
| 6509 | |
| 6510 | setCursor: docMethodOp(function(line, ch, options) { |
| 6511 | setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options); |
| 6512 | }), |
| 6513 | setSelection: docMethodOp(function(anchor, head, options) { |
| 6514 | setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options); |
| 6515 | }), |
| 6516 | extendSelection: docMethodOp(function(head, other, options) { |
| 6517 | extendSelection(this, clipPos(this, head), other && clipPos(this, other), options); |
| 6518 | }), |
| 6519 | extendSelections: docMethodOp(function(heads, options) { |
| 6520 | extendSelections(this, clipPosArray(this, heads, options)); |
| 6521 | }), |
| 6522 | extendSelectionsBy: docMethodOp(function(f, options) { |
| 6523 | extendSelections(this, map(this.sel.ranges, f), options); |
| 6524 | }), |
| 6525 | setSelections: docMethodOp(function(ranges, primary, options) { |
| 6526 | if (!ranges.length) return; |
| 6527 | for (var i = 0, out = []; i < ranges.length; i++) |
| 6528 | out[i] = new Range(clipPos(this, ranges[i].anchor), |
| 6529 | clipPos(this, ranges[i].head)); |
| 6530 | if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex); |
| 6531 | setSelection(this, normalizeSelection(out, primary), options); |
| 6532 | }), |
| 6533 | addSelection: docMethodOp(function(anchor, head, options) { |
| 6534 | var ranges = this.sel.ranges.slice(0); |
| 6535 | ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor))); |
| 6536 | setSelection(this, normalizeSelection(ranges, ranges.length - 1), options); |
| 6537 | }), |
| 6538 | |
| 6539 | getSelection: function(lineSep) { |
| 6540 | var ranges = this.sel.ranges, lines; |
| 6541 | for (var i = 0; i < ranges.length; i++) { |
| 6542 | var sel = getBetween(this, ranges[i].from(), ranges[i].to()); |
| 6543 | lines = lines ? lines.concat(sel) : sel; |
| 6544 | } |
| 6545 | if (lineSep === false) return lines; |
| 6546 | else return lines.join(lineSep || "\n"); |
| 6547 | }, |
| 6548 | getSelections: function(lineSep) { |
| 6549 | var parts = [], ranges = this.sel.ranges; |
| 6550 | for (var i = 0; i < ranges.length; i++) { |
| 6551 | var sel = getBetween(this, ranges[i].from(), ranges[i].to()); |
| 6552 | if (lineSep !== false) sel = sel.join(lineSep || "\n"); |
| 6553 | parts[i] = sel; |
| 6554 | } |
| 6555 | return parts; |
| 6556 | }, |
| 6557 | replaceSelection: function(code, collapse, origin) { |
| 6558 | var dup = []; |
| 6559 | for (var i = 0; i < this.sel.ranges.length; i++) |
| 6560 | dup[i] = code; |
| 6561 | this.replaceSelections(dup, collapse, origin || "+input"); |
| 6562 | }, |
| 6563 | replaceSelections: docMethodOp(function(code, collapse, origin) { |
| 6564 | var changes = [], sel = this.sel; |
| 6565 | for (var i = 0; i < sel.ranges.length; i++) { |
| 6566 | var range = sel.ranges[i]; |
| 6567 | changes[i] = {from: range.from(), to: range.to(), text: splitLines(code[i]), origin: origin}; |
| 6568 | } |
| 6569 | var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse); |
| 6570 | for (var i = changes.length - 1; i >= 0; i--) |
| 6571 | makeChange(this, changes[i]); |
| 6572 | if (newSel) setSelectionReplaceHistory(this, newSel); |
| 6573 | else if (this.cm) ensureCursorVisible(this.cm); |
| 6574 | }), |
| 6575 | undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}), |
| 6576 | redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}), |
| 6577 | undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}), |
| 6578 | redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}), |
| 6579 | |
| 6580 | setExtending: function(val) {this.extend = val;}, |
| 6581 | getExtending: function() {return this.extend;}, |
| 6582 | |
| 6583 | historySize: function() { |
| 6584 | var hist = this.history, done = 0, undone = 0; |
| 6585 | for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done; |
| 6586 | for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone; |
| 6587 | return {undo: done, redo: undone}; |
| 6588 | }, |
| 6589 | clearHistory: function() {this.history = new History(this.history.maxGeneration);}, |
| 6590 | |
| 6591 | markClean: function() { |
| 6592 | this.cleanGeneration = this.changeGeneration(true); |
| 6593 | }, |
| 6594 | changeGeneration: function(forceSplit) { |
| 6595 | if (forceSplit) |
| 6596 | this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; |
| 6597 | return this.history.generation; |
| 6598 | }, |
| 6599 | isClean: function (gen) { |
| 6600 | return this.history.generation == (gen || this.cleanGeneration); |
| 6601 | }, |
| 6602 | |
| 6603 | getHistory: function() { |
| 6604 | return {done: copyHistoryArray(this.history.done), |
| 6605 | undone: copyHistoryArray(this.history.undone)}; |
| 6606 | }, |
| 6607 | setHistory: function(histData) { |
| 6608 | var hist = this.history = new History(this.history.maxGeneration); |
| 6609 | hist.done = copyHistoryArray(histData.done.slice(0), null, true); |
| 6610 | hist.undone = copyHistoryArray(histData.undone.slice(0), null, true); |
| 6611 | }, |
| 6612 | |
| 6613 | addLineClass: docMethodOp(function(handle, where, cls) { |
| 6614 | return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) { |
| 6615 | var prop = where == "text" ? "textClass" |
| 6616 | : where == "background" ? "bgClass" |
| 6617 | : where == "gutter" ? "gutterClass" : "wrapClass"; |
| 6618 | if (!line[prop]) line[prop] = cls; |
| 6619 | else if (classTest(cls).test(line[prop])) return false; |
| 6620 | else line[prop] += " " + cls; |
| 6621 | return true; |
| 6622 | }); |
| 6623 | }), |
| 6624 | removeLineClass: docMethodOp(function(handle, where, cls) { |
| 6625 | return changeLine(this, handle, "class", function(line) { |
| 6626 | var prop = where == "text" ? "textClass" |
| 6627 | : where == "background" ? "bgClass" |
| 6628 | : where == "gutter" ? "gutterClass" : "wrapClass"; |
| 6629 | var cur = line[prop]; |
| 6630 | if (!cur) return false; |
| 6631 | else if (cls == null) line[prop] = null; |
| 6632 | else { |
| 6633 | var found = cur.match(classTest(cls)); |
| 6634 | if (!found) return false; |
| 6635 | var end = found.index + found[0].length; |
| 6636 | line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; |
| 6637 | } |
| 6638 | return true; |
| 6639 | }); |
| 6640 | }), |
| 6641 | |
| 6642 | markText: function(from, to, options) { |
| 6643 | return markText(this, clipPos(this, from), clipPos(this, to), options, "range"); |
| 6644 | }, |
| 6645 | setBookmark: function(pos, options) { |
| 6646 | var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), |
| 6647 | insertLeft: options && options.insertLeft, |
| 6648 | clearWhenEmpty: false, shared: options && options.shared}; |
| 6649 | pos = clipPos(this, pos); |
| 6650 | return markText(this, pos, pos, realOpts, "bookmark"); |
| 6651 | }, |
| 6652 | findMarksAt: function(pos) { |
| 6653 | pos = clipPos(this, pos); |
| 6654 | var markers = [], spans = getLine(this, pos.line).markedSpans; |
| 6655 | if (spans) for (var i = 0; i < spans.length; ++i) { |
| 6656 | var span = spans[i]; |
| 6657 | if ((span.from == null || span.from <= pos.ch) && |
| 6658 | (span.to == null || span.to >= pos.ch)) |
| 6659 | markers.push(span.marker.parent || span.marker); |
| 6660 | } |
| 6661 | return markers; |
| 6662 | }, |
| 6663 | findMarks: function(from, to, filter) { |
| 6664 | from = clipPos(this, from); to = clipPos(this, to); |
| 6665 | var found = [], lineNo = from.line; |
| 6666 | this.iter(from.line, to.line + 1, function(line) { |
| 6667 | var spans = line.markedSpans; |
| 6668 | if (spans) for (var i = 0; i < spans.length; i++) { |
| 6669 | var span = spans[i]; |
| 6670 | if (!(lineNo == from.line && from.ch > span.to || |
| 6671 | span.from == null && lineNo != from.line|| |
| 6672 | lineNo == to.line && span.from > to.ch) && |
| 6673 | (!filter || filter(span.marker))) |
| 6674 | found.push(span.marker.parent || span.marker); |
| 6675 | } |
| 6676 | ++lineNo; |
| 6677 | }); |
| 6678 | return found; |
| 6679 | }, |
| 6680 | getAllMarks: function() { |
| 6681 | var markers = []; |
| 6682 | this.iter(function(line) { |
| 6683 | var sps = line.markedSpans; |
| 6684 | if (sps) for (var i = 0; i < sps.length; ++i) |
| 6685 | if (sps[i].from != null) markers.push(sps[i].marker); |
| 6686 | }); |
| 6687 | return markers; |
| 6688 | }, |
| 6689 | |
| 6690 | posFromIndex: function(off) { |
| 6691 | var ch, lineNo = this.first; |
| 6692 | this.iter(function(line) { |
| 6693 | var sz = line.text.length + 1; |
| 6694 | if (sz > off) { ch = off; return true; } |
| 6695 | off -= sz; |
| 6696 | ++lineNo; |
| 6697 | }); |
| 6698 | return clipPos(this, Pos(lineNo, ch)); |
| 6699 | }, |
| 6700 | indexFromPos: function (coords) { |
| 6701 | coords = clipPos(this, coords); |
| 6702 | var index = coords.ch; |
| 6703 | if (coords.line < this.first || coords.ch < 0) return 0; |
| 6704 | this.iter(this.first, coords.line, function (line) { |
| 6705 | index += line.text.length + 1; |
| 6706 | }); |
| 6707 | return index; |
| 6708 | }, |
| 6709 | |
| 6710 | copy: function(copyHistory) { |
| 6711 | var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first); |
| 6712 | doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; |
| 6713 | doc.sel = this.sel; |
| 6714 | doc.extend = false; |
| 6715 | if (copyHistory) { |
| 6716 | doc.history.undoDepth = this.history.undoDepth; |
| 6717 | doc.setHistory(this.getHistory()); |
| 6718 | } |
| 6719 | return doc; |
| 6720 | }, |
| 6721 | |
| 6722 | linkedDoc: function(options) { |
| 6723 | if (!options) options = {}; |
| 6724 | var from = this.first, to = this.first + this.size; |
| 6725 | if (options.from != null && options.from > from) from = options.from; |
| 6726 | if (options.to != null && options.to < to) to = options.to; |
| 6727 | var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from); |
| 6728 | if (options.sharedHist) copy.history = this.history; |
| 6729 | (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); |
| 6730 | copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; |
| 6731 | copySharedMarkers(copy, findSharedMarkers(this)); |
| 6732 | return copy; |
| 6733 | }, |
| 6734 | unlinkDoc: function(other) { |
| 6735 | if (other instanceof CodeMirror) other = other.doc; |
| 6736 | if (this.linked) for (var i = 0; i < this.linked.length; ++i) { |
| 6737 | var link = this.linked[i]; |
| 6738 | if (link.doc != other) continue; |
| 6739 | this.linked.splice(i, 1); |
| 6740 | other.unlinkDoc(this); |
| 6741 | detachSharedMarkers(findSharedMarkers(this)); |
| 6742 | break; |
| 6743 | } |
| 6744 | // If the histories were shared, split them again |
| 6745 | if (other.history == this.history) { |
| 6746 | var splitIds = [other.id]; |
| 6747 | linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true); |
| 6748 | other.history = new History(null); |
| 6749 | other.history.done = copyHistoryArray(this.history.done, splitIds); |
| 6750 | other.history.undone = copyHistoryArray(this.history.undone, splitIds); |
| 6751 | } |
| 6752 | }, |
| 6753 | iterLinkedDocs: function(f) {linkedDocs(this, f);}, |
| 6754 | |
| 6755 | getMode: function() {return this.mode;}, |
| 6756 | getEditor: function() {return this.cm;} |
| 6757 | }); |
| 6758 | |
| 6759 | // Public alias. |
| 6760 | Doc.prototype.eachLine = Doc.prototype.iter; |
| 6761 | |
| 6762 | // Set up methods on CodeMirror's prototype to redirect to the editor's document. |
| 6763 | var dontDelegate = "iter insert remove copy getEditor".split(" "); |
| 6764 | for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) |
| 6765 | CodeMirror.prototype[prop] = (function(method) { |
| 6766 | return function() {return method.apply(this.doc, arguments);}; |
| 6767 | })(Doc.prototype[prop]); |
| 6768 | |
| 6769 | eventMixin(Doc); |
| 6770 | |
| 6771 | // Call f for all linked documents. |
| 6772 | function linkedDocs(doc, f, sharedHistOnly) { |
| 6773 | function propagate(doc, skip, sharedHist) { |
| 6774 | if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) { |
| 6775 | var rel = doc.linked[i]; |
| 6776 | if (rel.doc == skip) continue; |
| 6777 | var shared = sharedHist && rel.sharedHist; |
| 6778 | if (sharedHistOnly && !shared) continue; |
| 6779 | f(rel.doc, shared); |
| 6780 | propagate(rel.doc, doc, shared); |
| 6781 | } |
| 6782 | } |
| 6783 | propagate(doc, null, true); |
| 6784 | } |
| 6785 | |
| 6786 | // Attach a document to an editor. |
| 6787 | function attachDoc(cm, doc) { |
| 6788 | if (doc.cm) throw new Error("This document is already in use."); |
| 6789 | cm.doc = doc; |
| 6790 | doc.cm = cm; |
| 6791 | estimateLineHeights(cm); |
| 6792 | loadMode(cm); |
| 6793 | if (!cm.options.lineWrapping) findMaxLine(cm); |
| 6794 | cm.options.mode = doc.modeOption; |
| 6795 | regChange(cm); |
| 6796 | } |
| 6797 | |
| 6798 | // LINE UTILITIES |
| 6799 | |
| 6800 | // Find the line object corresponding to the given line number. |
| 6801 | function getLine(doc, n) { |
| 6802 | n -= doc.first; |
| 6803 | if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document."); |
| 6804 | for (var chunk = doc; !chunk.lines;) { |
| 6805 | for (var i = 0;; ++i) { |
| 6806 | var child = chunk.children[i], sz = child.chunkSize(); |
| 6807 | if (n < sz) { chunk = child; break; } |
| 6808 | n -= sz; |
| 6809 | } |
| 6810 | } |
| 6811 | return chunk.lines[n]; |
| 6812 | } |
| 6813 | |
| 6814 | // Get the part of a document between two positions, as an array of |
| 6815 | // strings. |
| 6816 | function getBetween(doc, start, end) { |
| 6817 | var out = [], n = start.line; |
| 6818 | doc.iter(start.line, end.line + 1, function(line) { |
| 6819 | var text = line.text; |
| 6820 | if (n == end.line) text = text.slice(0, end.ch); |
| 6821 | if (n == start.line) text = text.slice(start.ch); |
| 6822 | out.push(text); |
| 6823 | ++n; |
| 6824 | }); |
| 6825 | return out; |
| 6826 | } |
| 6827 | // Get the lines between from and to, as array of strings. |
| 6828 | function getLines(doc, from, to) { |
| 6829 | var out = []; |
| 6830 | doc.iter(from, to, function(line) { out.push(line.text); }); |
| 6831 | return out; |
| 6832 | } |
| 6833 | |
| 6834 | // Update the height of a line, propagating the height change |
| 6835 | // upwards to parent nodes. |
| 6836 | function updateLineHeight(line, height) { |
| 6837 | var diff = height - line.height; |
| 6838 | if (diff) for (var n = line; n; n = n.parent) n.height += diff; |
| 6839 | } |
| 6840 | |
| 6841 | // Given a line object, find its line number by walking up through |
| 6842 | // its parent links. |
| 6843 | function lineNo(line) { |
| 6844 | if (line.parent == null) return null; |
| 6845 | var cur = line.parent, no = indexOf(cur.lines, line); |
| 6846 | for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { |
| 6847 | for (var i = 0;; ++i) { |
| 6848 | if (chunk.children[i] == cur) break; |
| 6849 | no += chunk.children[i].chunkSize(); |
| 6850 | } |
| 6851 | } |
| 6852 | return no + cur.first; |
| 6853 | } |
| 6854 | |
| 6855 | // Find the line at the given vertical position, using the height |
| 6856 | // information in the document tree. |
| 6857 | function lineAtHeight(chunk, h) { |
| 6858 | var n = chunk.first; |
| 6859 | outer: do { |
| 6860 | for (var i = 0; i < chunk.children.length; ++i) { |
| 6861 | var child = chunk.children[i], ch = child.height; |
| 6862 | if (h < ch) { chunk = child; continue outer; } |
| 6863 | h -= ch; |
| 6864 | n += child.chunkSize(); |
| 6865 | } |
| 6866 | return n; |
| 6867 | } while (!chunk.lines); |
| 6868 | for (var i = 0; i < chunk.lines.length; ++i) { |
| 6869 | var line = chunk.lines[i], lh = line.height; |
| 6870 | if (h < lh) break; |
| 6871 | h -= lh; |
| 6872 | } |
| 6873 | return n + i; |
| 6874 | } |
| 6875 | |
| 6876 | |
| 6877 | // Find the height above the given line. |
| 6878 | function heightAtLine(lineObj) { |
| 6879 | lineObj = visualLine(lineObj); |
| 6880 | |
| 6881 | var h = 0, chunk = lineObj.parent; |
| 6882 | for (var i = 0; i < chunk.lines.length; ++i) { |
| 6883 | var line = chunk.lines[i]; |
| 6884 | if (line == lineObj) break; |
| 6885 | else h += line.height; |
| 6886 | } |
| 6887 | for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { |
| 6888 | for (var i = 0; i < p.children.length; ++i) { |
| 6889 | var cur = p.children[i]; |
| 6890 | if (cur == chunk) break; |
| 6891 | else h += cur.height; |
| 6892 | } |
| 6893 | } |
| 6894 | return h; |
| 6895 | } |
| 6896 | |
| 6897 | // Get the bidi ordering for the given line (and cache it). Returns |
| 6898 | // false for lines that are fully left-to-right, and an array of |
| 6899 | // BidiSpan objects otherwise. |
| 6900 | function getOrder(line) { |
| 6901 | var order = line.order; |
| 6902 | if (order == null) order = line.order = bidiOrdering(line.text); |
| 6903 | return order; |
| 6904 | } |
| 6905 | |
| 6906 | // HISTORY |
| 6907 | |
| 6908 | function History(startGen) { |
| 6909 | // Arrays of change events and selections. Doing something adds an |
| 6910 | // event to done and clears undo. Undoing moves events from done |
| 6911 | // to undone, redoing moves them in the other direction. |
| 6912 | this.done = []; this.undone = []; |
| 6913 | this.undoDepth = Infinity; |
| 6914 | // Used to track when changes can be merged into a single undo |
| 6915 | // event |
| 6916 | this.lastModTime = this.lastSelTime = 0; |
| 6917 | this.lastOp = this.lastSelOp = null; |
| 6918 | this.lastOrigin = this.lastSelOrigin = null; |
| 6919 | // Used by the isClean() method |
| 6920 | this.generation = this.maxGeneration = startGen || 1; |
| 6921 | } |
| 6922 | |
| 6923 | // Create a history change event from an updateDoc-style change |
| 6924 | // object. |
| 6925 | function historyChangeFromChange(doc, change) { |
| 6926 | var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; |
| 6927 | attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); |
| 6928 | linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true); |
| 6929 | return histChange; |
| 6930 | } |
| 6931 | |
| 6932 | // Pop all selection events off the end of a history array. Stop at |
| 6933 | // a change event. |
| 6934 | function clearSelectionEvents(array) { |
| 6935 | while (array.length) { |
| 6936 | var last = lst(array); |
| 6937 | if (last.ranges) array.pop(); |
| 6938 | else break; |
| 6939 | } |
| 6940 | } |
| 6941 | |
| 6942 | // Find the top change event in the history. Pop off selection |
| 6943 | // events that are in the way. |
| 6944 | function lastChangeEvent(hist, force) { |
| 6945 | if (force) { |
| 6946 | clearSelectionEvents(hist.done); |
| 6947 | return lst(hist.done); |
| 6948 | } else if (hist.done.length && !lst(hist.done).ranges) { |
| 6949 | return lst(hist.done); |
| 6950 | } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) { |
| 6951 | hist.done.pop(); |
| 6952 | return lst(hist.done); |
| 6953 | } |
| 6954 | } |
| 6955 | |
| 6956 | // Register a change in the history. Merges changes that are within |
| 6957 | // a single operation, ore are close together with an origin that |
| 6958 | // allows merging (starting with "+") into a single event. |
| 6959 | function addChangeToHistory(doc, change, selAfter, opId) { |
| 6960 | var hist = doc.history; |
| 6961 | hist.undone.length = 0; |
| 6962 | var time = +new Date, cur; |
| 6963 | |
| 6964 | if ((hist.lastOp == opId || |
| 6965 | hist.lastOrigin == change.origin && change.origin && |
| 6966 | ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) || |
| 6967 | change.origin.charAt(0) == "*")) && |
| 6968 | (cur = lastChangeEvent(hist, hist.lastOp == opId))) { |
| 6969 | // Merge this change into the last event |
| 6970 | var last = lst(cur.changes); |
| 6971 | if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) { |
| 6972 | // Optimized case for simple insertion -- don't want to add |
| 6973 | // new changesets for every character typed |
| 6974 | last.to = changeEnd(change); |
| 6975 | } else { |
| 6976 | // Add new sub-event |
| 6977 | cur.changes.push(historyChangeFromChange(doc, change)); |
| 6978 | } |
| 6979 | } else { |
| 6980 | // Can not be merged, start a new event. |
| 6981 | var before = lst(hist.done); |
| 6982 | if (!before || !before.ranges) |
| 6983 | pushSelectionToHistory(doc.sel, hist.done); |
| 6984 | cur = {changes: [historyChangeFromChange(doc, change)], |
| 6985 | generation: hist.generation}; |
| 6986 | hist.done.push(cur); |
| 6987 | while (hist.done.length > hist.undoDepth) { |
| 6988 | hist.done.shift(); |
| 6989 | if (!hist.done[0].ranges) hist.done.shift(); |
| 6990 | } |
| 6991 | } |
| 6992 | hist.done.push(selAfter); |
| 6993 | hist.generation = ++hist.maxGeneration; |
| 6994 | hist.lastModTime = hist.lastSelTime = time; |
| 6995 | hist.lastOp = hist.lastSelOp = opId; |
| 6996 | hist.lastOrigin = hist.lastSelOrigin = change.origin; |
| 6997 | |
| 6998 | if (!last) signal(doc, "historyAdded"); |
| 6999 | } |
| 7000 | |
| 7001 | function selectionEventCanBeMerged(doc, origin, prev, sel) { |
| 7002 | var ch = origin.charAt(0); |
| 7003 | return ch == "*" || |
| 7004 | ch == "+" && |
| 7005 | prev.ranges.length == sel.ranges.length && |
| 7006 | prev.somethingSelected() == sel.somethingSelected() && |
| 7007 | new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500); |
| 7008 | } |
| 7009 | |
| 7010 | // Called whenever the selection changes, sets the new selection as |
| 7011 | // the pending selection in the history, and pushes the old pending |
| 7012 | // selection into the 'done' array when it was significantly |
| 7013 | // different (in number of selected ranges, emptiness, or time). |
| 7014 | function addSelectionToHistory(doc, sel, opId, options) { |
| 7015 | var hist = doc.history, origin = options && options.origin; |
| 7016 | |
| 7017 | // A new event is started when the previous origin does not match |
| 7018 | // the current, or the origins don't allow matching. Origins |
| 7019 | // starting with * are always merged, those starting with + are |
| 7020 | // merged when similar and close together in time. |
| 7021 | if (opId == hist.lastSelOp || |
| 7022 | (origin && hist.lastSelOrigin == origin && |
| 7023 | (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin || |
| 7024 | selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) |
| 7025 | hist.done[hist.done.length - 1] = sel; |
| 7026 | else |
| 7027 | pushSelectionToHistory(sel, hist.done); |
| 7028 | |
| 7029 | hist.lastSelTime = +new Date; |
| 7030 | hist.lastSelOrigin = origin; |
| 7031 | hist.lastSelOp = opId; |
| 7032 | if (options && options.clearRedo !== false) |
| 7033 | clearSelectionEvents(hist.undone); |
| 7034 | } |
| 7035 | |
| 7036 | function pushSelectionToHistory(sel, dest) { |
| 7037 | var top = lst(dest); |
| 7038 | if (!(top && top.ranges && top.equals(sel))) |
| 7039 | dest.push(sel); |
| 7040 | } |
| 7041 | |
| 7042 | // Used to store marked span information in the history. |
| 7043 | function attachLocalSpans(doc, change, from, to) { |
| 7044 | var existing = change["spans_" + doc.id], n = 0; |
| 7045 | doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) { |
| 7046 | if (line.markedSpans) |
| 7047 | (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; |
| 7048 | ++n; |
| 7049 | }); |
| 7050 | } |
| 7051 | |
| 7052 | // When un/re-doing restores text containing marked spans, those |
| 7053 | // that have been explicitly cleared should not be restored. |
| 7054 | function removeClearedSpans(spans) { |
| 7055 | if (!spans) return null; |
| 7056 | for (var i = 0, out; i < spans.length; ++i) { |
| 7057 | if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } |
| 7058 | else if (out) out.push(spans[i]); |
| 7059 | } |
| 7060 | return !out ? spans : out.length ? out : null; |
| 7061 | } |
| 7062 | |
| 7063 | // Retrieve and filter the old marked spans stored in a change event. |
| 7064 | function getOldSpans(doc, change) { |
| 7065 | var found = change["spans_" + doc.id]; |
| 7066 | if (!found) return null; |
| 7067 | for (var i = 0, nw = []; i < change.text.length; ++i) |
| 7068 | nw.push(removeClearedSpans(found[i])); |
| 7069 | return nw; |
| 7070 | } |
| 7071 | |
| 7072 | // Used both to provide a JSON-safe object in .getHistory, and, when |
| 7073 | // detaching a document, to split the history in two |
| 7074 | function copyHistoryArray(events, newGroup, instantiateSel) { |
| 7075 | for (var i = 0, copy = []; i < events.length; ++i) { |
| 7076 | var event = events[i]; |
| 7077 | if (event.ranges) { |
| 7078 | copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event); |
| 7079 | continue; |
| 7080 | } |
| 7081 | var changes = event.changes, newChanges = []; |
| 7082 | copy.push({changes: newChanges}); |
| 7083 | for (var j = 0; j < changes.length; ++j) { |
| 7084 | var change = changes[j], m; |
| 7085 | newChanges.push({from: change.from, to: change.to, text: change.text}); |
| 7086 | if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) { |
| 7087 | if (indexOf(newGroup, Number(m[1])) > -1) { |
| 7088 | lst(newChanges)[prop] = change[prop]; |
| 7089 | delete change[prop]; |
| 7090 | } |
| 7091 | } |
| 7092 | } |
| 7093 | } |
| 7094 | return copy; |
| 7095 | } |
| 7096 | |
| 7097 | // Rebasing/resetting history to deal with externally-sourced changes |
| 7098 | |
| 7099 | function rebaseHistSelSingle(pos, from, to, diff) { |
| 7100 | if (to < pos.line) { |
| 7101 | pos.line += diff; |
| 7102 | } else if (from < pos.line) { |
| 7103 | pos.line = from; |
| 7104 | pos.ch = 0; |
| 7105 | } |
| 7106 | } |
| 7107 | |
| 7108 | // Tries to rebase an array of history events given a change in the |
| 7109 | // document. If the change touches the same lines as the event, the |
| 7110 | // event, and everything 'behind' it, is discarded. If the change is |
| 7111 | // before the event, the event's positions are updated. Uses a |
| 7112 | // copy-on-write scheme for the positions, to avoid having to |
| 7113 | // reallocate them all on every rebase, but also avoid problems with |
| 7114 | // shared position objects being unsafely updated. |
| 7115 | function rebaseHistArray(array, from, to, diff) { |
| 7116 | for (var i = 0; i < array.length; ++i) { |
| 7117 | var sub = array[i], ok = true; |
| 7118 | if (sub.ranges) { |
| 7119 | if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; } |
| 7120 | for (var j = 0; j < sub.ranges.length; j++) { |
| 7121 | rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff); |
| 7122 | rebaseHistSelSingle(sub.ranges[j].head, from, to, diff); |
| 7123 | } |
| 7124 | continue; |
| 7125 | } |
| 7126 | for (var j = 0; j < sub.changes.length; ++j) { |
| 7127 | var cur = sub.changes[j]; |
| 7128 | if (to < cur.from.line) { |
| 7129 | cur.from = Pos(cur.from.line + diff, cur.from.ch); |
| 7130 | cur.to = Pos(cur.to.line + diff, cur.to.ch); |
| 7131 | } else if (from <= cur.to.line) { |
| 7132 | ok = false; |
| 7133 | break; |
| 7134 | } |
| 7135 | } |
| 7136 | if (!ok) { |
| 7137 | array.splice(0, i + 1); |
| 7138 | i = 0; |
| 7139 | } |
| 7140 | } |
| 7141 | } |
| 7142 | |
| 7143 | function rebaseHist(hist, change) { |
| 7144 | var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; |
| 7145 | rebaseHistArray(hist.done, from, to, diff); |
| 7146 | rebaseHistArray(hist.undone, from, to, diff); |
| 7147 | } |
| 7148 | |
| 7149 | // EVENT UTILITIES |
| 7150 | |
| 7151 | // Due to the fact that we still support jurassic IE versions, some |
| 7152 | // compatibility wrappers are needed. |
| 7153 | |
| 7154 | var e_preventDefault = CodeMirror.e_preventDefault = function(e) { |
| 7155 | if (e.preventDefault) e.preventDefault(); |
| 7156 | else e.returnValue = false; |
| 7157 | }; |
| 7158 | var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) { |
| 7159 | if (e.stopPropagation) e.stopPropagation(); |
| 7160 | else e.cancelBubble = true; |
| 7161 | }; |
| 7162 | function e_defaultPrevented(e) { |
| 7163 | return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; |
| 7164 | } |
| 7165 | var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);}; |
| 7166 | |
| 7167 | function e_target(e) {return e.target || e.srcElement;} |
| 7168 | function e_button(e) { |
| 7169 | var b = e.which; |
| 7170 | if (b == null) { |
| 7171 | if (e.button & 1) b = 1; |
| 7172 | else if (e.button & 2) b = 3; |
| 7173 | else if (e.button & 4) b = 2; |
| 7174 | } |
| 7175 | if (mac && e.ctrlKey && b == 1) b = 3; |
| 7176 | return b; |
| 7177 | } |
| 7178 | |
| 7179 | // EVENT HANDLING |
| 7180 | |
| 7181 | // Lightweight event framework. on/off also work on DOM nodes, |
| 7182 | // registering native DOM handlers. |
| 7183 | |
| 7184 | var on = CodeMirror.on = function(emitter, type, f) { |
| 7185 | if (emitter.addEventListener) |
| 7186 | emitter.addEventListener(type, f, false); |
| 7187 | else if (emitter.attachEvent) |
| 7188 | emitter.attachEvent("on" + type, f); |
| 7189 | else { |
| 7190 | var map = emitter._handlers || (emitter._handlers = {}); |
| 7191 | var arr = map[type] || (map[type] = []); |
| 7192 | arr.push(f); |
| 7193 | } |
| 7194 | }; |
| 7195 | |
| 7196 | var off = CodeMirror.off = function(emitter, type, f) { |
| 7197 | if (emitter.removeEventListener) |
| 7198 | emitter.removeEventListener(type, f, false); |
| 7199 | else if (emitter.detachEvent) |
| 7200 | emitter.detachEvent("on" + type, f); |
| 7201 | else { |
| 7202 | var arr = emitter._handlers && emitter._handlers[type]; |
| 7203 | if (!arr) return; |
| 7204 | for (var i = 0; i < arr.length; ++i) |
| 7205 | if (arr[i] == f) { arr.splice(i, 1); break; } |
| 7206 | } |
| 7207 | }; |
| 7208 | |
| 7209 | var signal = CodeMirror.signal = function(emitter, type /*, values...*/) { |
| 7210 | var arr = emitter._handlers && emitter._handlers[type]; |
| 7211 | if (!arr) return; |
| 7212 | var args = Array.prototype.slice.call(arguments, 2); |
| 7213 | for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args); |
| 7214 | }; |
| 7215 | |
| 7216 | var orphanDelayedCallbacks = null; |
| 7217 | |
| 7218 | // Often, we want to signal events at a point where we are in the |
| 7219 | // middle of some work, but don't want the handler to start calling |
| 7220 | // other methods on the editor, which might be in an inconsistent |
| 7221 | // state or simply not expect any other events to happen. |
| 7222 | // signalLater looks whether there are any handlers, and schedules |
| 7223 | // them to be executed when the last operation ends, or, if no |
| 7224 | // operation is active, when a timeout fires. |
| 7225 | function signalLater(emitter, type /*, values...*/) { |
| 7226 | var arr = emitter._handlers && emitter._handlers[type]; |
| 7227 | if (!arr) return; |
| 7228 | var args = Array.prototype.slice.call(arguments, 2), list; |
| 7229 | if (operationGroup) { |
| 7230 | list = operationGroup.delayedCallbacks; |
| 7231 | } else if (orphanDelayedCallbacks) { |
| 7232 | list = orphanDelayedCallbacks; |
| 7233 | } else { |
| 7234 | list = orphanDelayedCallbacks = []; |
| 7235 | setTimeout(fireOrphanDelayed, 0); |
| 7236 | } |
| 7237 | function bnd(f) {return function(){f.apply(null, args);};}; |
| 7238 | for (var i = 0; i < arr.length; ++i) |
| 7239 | list.push(bnd(arr[i])); |
| 7240 | } |
| 7241 | |
| 7242 | function fireOrphanDelayed() { |
| 7243 | var delayed = orphanDelayedCallbacks; |
| 7244 | orphanDelayedCallbacks = null; |
| 7245 | for (var i = 0; i < delayed.length; ++i) delayed[i](); |
| 7246 | } |
| 7247 | |
| 7248 | // The DOM events that CodeMirror handles can be overridden by |
| 7249 | // registering a (non-DOM) handler on the editor for the event name, |
| 7250 | // and preventDefault-ing the event in that handler. |
| 7251 | function signalDOMEvent(cm, e, override) { |
| 7252 | if (typeof e == "string") |
| 7253 | e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; |
| 7254 | signal(cm, override || e.type, cm, e); |
| 7255 | return e_defaultPrevented(e) || e.codemirrorIgnore; |
| 7256 | } |
| 7257 | |
| 7258 | function signalCursorActivity(cm) { |
| 7259 | var arr = cm._handlers && cm._handlers.cursorActivity; |
| 7260 | if (!arr) return; |
| 7261 | var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []); |
| 7262 | for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1) |
| 7263 | set.push(arr[i]); |
| 7264 | } |
| 7265 | |
| 7266 | function hasHandler(emitter, type) { |
| 7267 | var arr = emitter._handlers && emitter._handlers[type]; |
| 7268 | return arr && arr.length > 0; |
| 7269 | } |
| 7270 | |
| 7271 | // Add on and off methods to a constructor's prototype, to make |
| 7272 | // registering events on such objects more convenient. |
| 7273 | function eventMixin(ctor) { |
| 7274 | ctor.prototype.on = function(type, f) {on(this, type, f);}; |
| 7275 | ctor.prototype.off = function(type, f) {off(this, type, f);}; |
| 7276 | } |
| 7277 | |
| 7278 | // MISC UTILITIES |
| 7279 | |
| 7280 | // Number of pixels added to scroller and sizer to hide scrollbar |
| 7281 | var scrollerCutOff = 30; |
| 7282 | |
| 7283 | // Returned or thrown by various protocols to signal 'I'm not |
| 7284 | // handling this'. |
| 7285 | var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; |
| 7286 | |
| 7287 | // Reused option objects for setSelection & friends |
| 7288 | var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"}; |
| 7289 | |
| 7290 | function Delayed() {this.id = null;} |
| 7291 | Delayed.prototype.set = function(ms, f) { |
| 7292 | clearTimeout(this.id); |
| 7293 | this.id = setTimeout(f, ms); |
| 7294 | }; |
| 7295 | |
| 7296 | // Counts the column offset in a string, taking tabs into account. |
| 7297 | // Used mostly to find indentation. |
| 7298 | var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) { |
| 7299 | if (end == null) { |
| 7300 | end = string.search(/[^\s\u00a0]/); |
| 7301 | if (end == -1) end = string.length; |
| 7302 | } |
| 7303 | for (var i = startIndex || 0, n = startValue || 0;;) { |
| 7304 | var nextTab = string.indexOf("\t", i); |
| 7305 | if (nextTab < 0 || nextTab >= end) |
| 7306 | return n + (end - i); |
| 7307 | n += nextTab - i; |
| 7308 | n += tabSize - (n % tabSize); |
| 7309 | i = nextTab + 1; |
| 7310 | } |
| 7311 | }; |
| 7312 | |
| 7313 | // The inverse of countColumn -- find the offset that corresponds to |
| 7314 | // a particular column. |
| 7315 | function findColumn(string, goal, tabSize) { |
| 7316 | for (var pos = 0, col = 0;;) { |
| 7317 | var nextTab = string.indexOf("\t", pos); |
| 7318 | if (nextTab == -1) nextTab = string.length; |
| 7319 | var skipped = nextTab - pos; |
| 7320 | if (nextTab == string.length || col + skipped >= goal) |
| 7321 | return pos + Math.min(skipped, goal - col); |
| 7322 | col += nextTab - pos; |
| 7323 | col += tabSize - (col % tabSize); |
| 7324 | pos = nextTab + 1; |
| 7325 | if (col >= goal) return pos; |
| 7326 | } |
| 7327 | } |
| 7328 | |
| 7329 | var spaceStrs = [""]; |
| 7330 | function spaceStr(n) { |
| 7331 | while (spaceStrs.length <= n) |
| 7332 | spaceStrs.push(lst(spaceStrs) + " "); |
| 7333 | return spaceStrs[n]; |
| 7334 | } |
| 7335 | |
| 7336 | function lst(arr) { return arr[arr.length-1]; } |
| 7337 | |
| 7338 | var selectInput = function(node) { node.select(); }; |
| 7339 | if (ios) // Mobile Safari apparently has a bug where select() is broken. |
| 7340 | selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; |
| 7341 | else if (ie) // Suppress mysterious IE10 errors |
| 7342 | selectInput = function(node) { try { node.select(); } catch(_e) {} }; |
| 7343 | |
| 7344 | function indexOf(array, elt) { |
| 7345 | for (var i = 0; i < array.length; ++i) |
| 7346 | if (array[i] == elt) return i; |
| 7347 | return -1; |
| 7348 | } |
| 7349 | if ([].indexOf) indexOf = function(array, elt) { return array.indexOf(elt); }; |
| 7350 | function map(array, f) { |
| 7351 | var out = []; |
| 7352 | for (var i = 0; i < array.length; i++) out[i] = f(array[i], i); |
| 7353 | return out; |
| 7354 | } |
| 7355 | if ([].map) map = function(array, f) { return array.map(f); }; |
| 7356 | |
| 7357 | function createObj(base, props) { |
| 7358 | var inst; |
| 7359 | if (Object.create) { |
| 7360 | inst = Object.create(base); |
| 7361 | } else { |
| 7362 | var ctor = function() {}; |
| 7363 | ctor.prototype = base; |
| 7364 | inst = new ctor(); |
| 7365 | } |
| 7366 | if (props) copyObj(props, inst); |
| 7367 | return inst; |
| 7368 | }; |
| 7369 | |
| 7370 | function copyObj(obj, target, overwrite) { |
| 7371 | if (!target) target = {}; |
| 7372 | for (var prop in obj) |
| 7373 | if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop))) |
| 7374 | target[prop] = obj[prop]; |
| 7375 | return target; |
| 7376 | } |
| 7377 | |
| 7378 | function bind(f) { |
| 7379 | var args = Array.prototype.slice.call(arguments, 1); |
| 7380 | return function(){return f.apply(null, args);}; |
| 7381 | } |
| 7382 | |
| 7383 | var nonASCIISingleCaseWordChar = /[\u00df\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; |
| 7384 | var isWordCharBasic = CodeMirror.isWordChar = function(ch) { |
| 7385 | return /\w/.test(ch) || ch > "\x80" && |
| 7386 | (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); |
| 7387 | }; |
| 7388 | function isWordChar(ch, helper) { |
| 7389 | if (!helper) return isWordCharBasic(ch); |
| 7390 | if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true; |
| 7391 | return helper.test(ch); |
| 7392 | } |
| 7393 | |
| 7394 | function isEmpty(obj) { |
| 7395 | for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; |
| 7396 | return true; |
| 7397 | } |
| 7398 | |
| 7399 | // Extending unicode characters. A series of a non-extending char + |
| 7400 | // any number of extending chars is treated as a single unit as far |
| 7401 | // as editing and measuring is concerned. This is not fully correct, |
| 7402 | // since some scripts/fonts/browsers also treat other configurations |
| 7403 | // of code points as a group. |
| 7404 | var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/; |
| 7405 | function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); } |
| 7406 | |
| 7407 | // DOM UTILITIES |
| 7408 | |
| 7409 | function elt(tag, content, className, style) { |
| 7410 | var e = document.createElement(tag); |
| 7411 | if (className) e.className = className; |
| 7412 | if (style) e.style.cssText = style; |
| 7413 | if (typeof content == "string") e.appendChild(document.createTextNode(content)); |
| 7414 | else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); |
| 7415 | return e; |
| 7416 | } |
| 7417 | |
| 7418 | var range; |
| 7419 | if (document.createRange) range = function(node, start, end) { |
| 7420 | var r = document.createRange(); |
| 7421 | r.setEnd(node, end); |
| 7422 | r.setStart(node, start); |
| 7423 | return r; |
| 7424 | }; |
| 7425 | else range = function(node, start, end) { |
| 7426 | var r = document.body.createTextRange(); |
| 7427 | try { r.moveToElementText(node.parentNode); } |
| 7428 | catch(e) { return r; } |
| 7429 | r.collapse(true); |
| 7430 | r.moveEnd("character", end); |
| 7431 | r.moveStart("character", start); |
| 7432 | return r; |
| 7433 | }; |
| 7434 | |
| 7435 | function removeChildren(e) { |
| 7436 | for (var count = e.childNodes.length; count > 0; --count) |
| 7437 | e.removeChild(e.firstChild); |
| 7438 | return e; |
| 7439 | } |
| 7440 | |
| 7441 | function removeChildrenAndAdd(parent, e) { |
| 7442 | return removeChildren(parent).appendChild(e); |
| 7443 | } |
| 7444 | |
| 7445 | function contains(parent, child) { |
| 7446 | if (parent.contains) |
| 7447 | return parent.contains(child); |
| 7448 | while (child = child.parentNode) |
| 7449 | if (child == parent) return true; |
| 7450 | } |
| 7451 | |
| 7452 | function activeElt() { return document.activeElement; } |
| 7453 | // Older versions of IE throws unspecified error when touching |
| 7454 | // document.activeElement in some cases (during loading, in iframe) |
| 7455 | if (ie && ie_version < 11) activeElt = function() { |
| 7456 | try { return document.activeElement; } |
| 7457 | catch(e) { return document.body; } |
| 7458 | }; |
| 7459 | |
| 7460 | function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*"); } |
| 7461 | var rmClass = CodeMirror.rmClass = function(node, cls) { |
| 7462 | var current = node.className; |
| 7463 | var match = classTest(cls).exec(current); |
| 7464 | if (match) { |
| 7465 | var after = current.slice(match.index + match[0].length); |
| 7466 | node.className = current.slice(0, match.index) + (after ? match[1] + after : ""); |
| 7467 | } |
| 7468 | }; |
| 7469 | var addClass = CodeMirror.addClass = function(node, cls) { |
| 7470 | var current = node.className; |
| 7471 | if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls; |
| 7472 | }; |
| 7473 | function joinClasses(a, b) { |
| 7474 | var as = a.split(" "); |
| 7475 | for (var i = 0; i < as.length; i++) |
| 7476 | if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i]; |
| 7477 | return b; |
| 7478 | } |
| 7479 | |
| 7480 | // WINDOW-WIDE EVENTS |
| 7481 | |
| 7482 | // These must be handled carefully, because naively registering a |
| 7483 | // handler for each editor will cause the editors to never be |
| 7484 | // garbage collected. |
| 7485 | |
| 7486 | function forEachCodeMirror(f) { |
| 7487 | if (!document.body.getElementsByClassName) return; |
| 7488 | var byClass = document.body.getElementsByClassName("CodeMirror"); |
| 7489 | for (var i = 0; i < byClass.length; i++) { |
| 7490 | var cm = byClass[i].CodeMirror; |
| 7491 | if (cm) f(cm); |
| 7492 | } |
| 7493 | } |
| 7494 | |
| 7495 | var globalsRegistered = false; |
| 7496 | function ensureGlobalHandlers() { |
| 7497 | if (globalsRegistered) return; |
| 7498 | registerGlobalHandlers(); |
| 7499 | globalsRegistered = true; |
| 7500 | } |
| 7501 | function registerGlobalHandlers() { |
| 7502 | // When the window resizes, we need to refresh active editors. |
| 7503 | var resizeTimer; |
| 7504 | on(window, "resize", function() { |
| 7505 | if (resizeTimer == null) resizeTimer = setTimeout(function() { |
| 7506 | resizeTimer = null; |
| 7507 | knownScrollbarWidth = null; |
| 7508 | forEachCodeMirror(onResize); |
| 7509 | }, 100); |
| 7510 | }); |
| 7511 | // When the window loses focus, we want to show the editor as blurred |
| 7512 | on(window, "blur", function() { |
| 7513 | forEachCodeMirror(onBlur); |
| 7514 | }); |
| 7515 | } |
| 7516 | |
| 7517 | // FEATURE DETECTION |
| 7518 | |
| 7519 | // Detect drag-and-drop |
| 7520 | var dragAndDrop = function() { |
| 7521 | // There is *some* kind of drag-and-drop support in IE6-8, but I |
| 7522 | // couldn't get it to work yet. |
| 7523 | if (ie && ie_version < 9) return false; |
| 7524 | var div = elt('div'); |
| 7525 | return "draggable" in div || "dragDrop" in div; |
| 7526 | }(); |
| 7527 | |
| 7528 | var knownScrollbarWidth; |
| 7529 | function scrollbarWidth(measure) { |
| 7530 | if (knownScrollbarWidth != null) return knownScrollbarWidth; |
| 7531 | var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); |
| 7532 | removeChildrenAndAdd(measure, test); |
| 7533 | if (test.offsetWidth) |
| 7534 | knownScrollbarWidth = test.offsetHeight - test.clientHeight; |
| 7535 | return knownScrollbarWidth || 0; |
| 7536 | } |
| 7537 | |
| 7538 | var zwspSupported; |
| 7539 | function zeroWidthElement(measure) { |
| 7540 | if (zwspSupported == null) { |
| 7541 | var test = elt("span", "\u200b"); |
| 7542 | removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); |
| 7543 | if (measure.firstChild.offsetHeight != 0) |
| 7544 | zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); |
| 7545 | } |
| 7546 | if (zwspSupported) return elt("span", "\u200b"); |
| 7547 | else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); |
| 7548 | } |
| 7549 | |
| 7550 | // Feature-detect IE's crummy client rect reporting for bidi text |
| 7551 | var badBidiRects; |
| 7552 | function hasBadBidiRects(measure) { |
| 7553 | if (badBidiRects != null) return badBidiRects; |
| 7554 | var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA")); |
| 7555 | var r0 = range(txt, 0, 1).getBoundingClientRect(); |
| 7556 | if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780) |
| 7557 | var r1 = range(txt, 1, 2).getBoundingClientRect(); |
| 7558 | return badBidiRects = (r1.right - r0.right < 3); |
| 7559 | } |
| 7560 | |
| 7561 | // See if "".split is the broken IE version, if so, provide an |
| 7562 | // alternative way to split lines. |
| 7563 | var splitLines = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { |
| 7564 | var pos = 0, result = [], l = string.length; |
| 7565 | while (pos <= l) { |
| 7566 | var nl = string.indexOf("\n", pos); |
| 7567 | if (nl == -1) nl = string.length; |
| 7568 | var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); |
| 7569 | var rt = line.indexOf("\r"); |
| 7570 | if (rt != -1) { |
| 7571 | result.push(line.slice(0, rt)); |
| 7572 | pos += rt + 1; |
| 7573 | } else { |
| 7574 | result.push(line); |
| 7575 | pos = nl + 1; |
| 7576 | } |
| 7577 | } |
| 7578 | return result; |
| 7579 | } : function(string){return string.split(/\r\n?|\n/);}; |
| 7580 | |
| 7581 | var hasSelection = window.getSelection ? function(te) { |
| 7582 | try { return te.selectionStart != te.selectionEnd; } |
| 7583 | catch(e) { return false; } |
| 7584 | } : function(te) { |
| 7585 | try {var range = te.ownerDocument.selection.createRange();} |
| 7586 | catch(e) {} |
| 7587 | if (!range || range.parentElement() != te) return false; |
| 7588 | return range.compareEndPoints("StartToEnd", range) != 0; |
| 7589 | }; |
| 7590 | |
| 7591 | var hasCopyEvent = (function() { |
| 7592 | var e = elt("div"); |
| 7593 | if ("oncopy" in e) return true; |
| 7594 | e.setAttribute("oncopy", "return;"); |
| 7595 | return typeof e.oncopy == "function"; |
| 7596 | })(); |
| 7597 | |
| 7598 | var badZoomedRects = null; |
| 7599 | function hasBadZoomedRects(measure) { |
| 7600 | if (badZoomedRects != null) return badZoomedRects; |
| 7601 | var node = removeChildrenAndAdd(measure, elt("span", "x")); |
| 7602 | var normal = node.getBoundingClientRect(); |
| 7603 | var fromRange = range(node, 0, 1).getBoundingClientRect(); |
| 7604 | return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1; |
| 7605 | } |
| 7606 | |
| 7607 | // KEY NAMES |
| 7608 | |
| 7609 | var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", |
| 7610 | 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", |
| 7611 | 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", |
| 7612 | 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete", |
| 7613 | 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", |
| 7614 | 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", |
| 7615 | 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"}; |
| 7616 | CodeMirror.keyNames = keyNames; |
| 7617 | (function() { |
| 7618 | // Number keys |
| 7619 | for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i); |
| 7620 | // Alphabetic keys |
| 7621 | for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); |
| 7622 | // Function keys |
| 7623 | for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; |
| 7624 | })(); |
| 7625 | |
| 7626 | // BIDI HELPERS |
| 7627 | |
| 7628 | function iterateBidiSections(order, from, to, f) { |
| 7629 | if (!order) return f(from, to, "ltr"); |
| 7630 | var found = false; |
| 7631 | for (var i = 0; i < order.length; ++i) { |
| 7632 | var part = order[i]; |
| 7633 | if (part.from < to && part.to > from || from == to && part.to == from) { |
| 7634 | f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); |
| 7635 | found = true; |
| 7636 | } |
| 7637 | } |
| 7638 | if (!found) f(from, to, "ltr"); |
| 7639 | } |
| 7640 | |
| 7641 | function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } |
| 7642 | function bidiRight(part) { return part.level % 2 ? part.from : part.to; } |
| 7643 | |
| 7644 | function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } |
| 7645 | function lineRight(line) { |
| 7646 | var order = getOrder(line); |
| 7647 | if (!order) return line.text.length; |
| 7648 | return bidiRight(lst(order)); |
| 7649 | } |
| 7650 | |
| 7651 | function lineStart(cm, lineN) { |
| 7652 | var line = getLine(cm.doc, lineN); |
| 7653 | var visual = visualLine(line); |
| 7654 | if (visual != line) lineN = lineNo(visual); |
| 7655 | var order = getOrder(visual); |
| 7656 | var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); |
| 7657 | return Pos(lineN, ch); |
| 7658 | } |
| 7659 | function lineEnd(cm, lineN) { |
| 7660 | var merged, line = getLine(cm.doc, lineN); |
| 7661 | while (merged = collapsedSpanAtEnd(line)) { |
| 7662 | line = merged.find(1, true).line; |
| 7663 | lineN = null; |
| 7664 | } |
| 7665 | var order = getOrder(line); |
| 7666 | var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); |
| 7667 | return Pos(lineN == null ? lineNo(line) : lineN, ch); |
| 7668 | } |
| 7669 | function lineStartSmart(cm, pos) { |
| 7670 | var start = lineStart(cm, pos.line); |
| 7671 | var line = getLine(cm.doc, start.line); |
| 7672 | var order = getOrder(line); |
| 7673 | if (!order || order[0].level == 0) { |
| 7674 | var firstNonWS = Math.max(0, line.text.search(/\S/)); |
| 7675 | var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch; |
| 7676 | return Pos(start.line, inWS ? 0 : firstNonWS); |
| 7677 | } |
| 7678 | return start; |
| 7679 | } |
| 7680 | |
| 7681 | function compareBidiLevel(order, a, b) { |
| 7682 | var linedir = order[0].level; |
| 7683 | if (a == linedir) return true; |
| 7684 | if (b == linedir) return false; |
| 7685 | return a < b; |
| 7686 | } |
| 7687 | var bidiOther; |
| 7688 | function getBidiPartAt(order, pos) { |
| 7689 | bidiOther = null; |
| 7690 | for (var i = 0, found; i < order.length; ++i) { |
| 7691 | var cur = order[i]; |
| 7692 | if (cur.from < pos && cur.to > pos) return i; |
| 7693 | if ((cur.from == pos || cur.to == pos)) { |
| 7694 | if (found == null) { |
| 7695 | found = i; |
| 7696 | } else if (compareBidiLevel(order, cur.level, order[found].level)) { |
| 7697 | if (cur.from != cur.to) bidiOther = found; |
| 7698 | return i; |
| 7699 | } else { |
| 7700 | if (cur.from != cur.to) bidiOther = i; |
| 7701 | return found; |
| 7702 | } |
| 7703 | } |
| 7704 | } |
| 7705 | return found; |
| 7706 | } |
| 7707 | |
| 7708 | function moveInLine(line, pos, dir, byUnit) { |
| 7709 | if (!byUnit) return pos + dir; |
| 7710 | do pos += dir; |
| 7711 | while (pos > 0 && isExtendingChar(line.text.charAt(pos))); |
| 7712 | return pos; |
| 7713 | } |
| 7714 | |
| 7715 | // This is needed in order to move 'visually' through bi-directional |
| 7716 | // text -- i.e., pressing left should make the cursor go left, even |
| 7717 | // when in RTL text. The tricky part is the 'jumps', where RTL and |
| 7718 | // LTR text touch each other. This often requires the cursor offset |
| 7719 | // to move more than one unit, in order to visually move one unit. |
| 7720 | function moveVisually(line, start, dir, byUnit) { |
| 7721 | var bidi = getOrder(line); |
| 7722 | if (!bidi) return moveLogically(line, start, dir, byUnit); |
| 7723 | var pos = getBidiPartAt(bidi, start), part = bidi[pos]; |
| 7724 | var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); |
| 7725 | |
| 7726 | for (;;) { |
| 7727 | if (target > part.from && target < part.to) return target; |
| 7728 | if (target == part.from || target == part.to) { |
| 7729 | if (getBidiPartAt(bidi, target) == pos) return target; |
| 7730 | part = bidi[pos += dir]; |
| 7731 | return (dir > 0) == part.level % 2 ? part.to : part.from; |
| 7732 | } else { |
| 7733 | part = bidi[pos += dir]; |
| 7734 | if (!part) return null; |
| 7735 | if ((dir > 0) == part.level % 2) |
| 7736 | target = moveInLine(line, part.to, -1, byUnit); |
| 7737 | else |
| 7738 | target = moveInLine(line, part.from, 1, byUnit); |
| 7739 | } |
| 7740 | } |
| 7741 | } |
| 7742 | |
| 7743 | function moveLogically(line, start, dir, byUnit) { |
| 7744 | var target = start + dir; |
| 7745 | if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir; |
| 7746 | return target < 0 || target > line.text.length ? null : target; |
| 7747 | } |
| 7748 | |
| 7749 | // Bidirectional ordering algorithm |
| 7750 | // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm |
| 7751 | // that this (partially) implements. |
| 7752 | |
| 7753 | // One-char codes used for character types: |
| 7754 | // L (L): Left-to-Right |
| 7755 | // R (R): Right-to-Left |
| 7756 | // r (AL): Right-to-Left Arabic |
| 7757 | // 1 (EN): European Number |
| 7758 | // + (ES): European Number Separator |
| 7759 | // % (ET): European Number Terminator |
| 7760 | // n (AN): Arabic Number |
| 7761 | // , (CS): Common Number Separator |
| 7762 | // m (NSM): Non-Spacing Mark |
| 7763 | // b (BN): Boundary Neutral |
| 7764 | // s (B): Paragraph Separator |
| 7765 | // t (S): Segment Separator |
| 7766 | // w (WS): Whitespace |
| 7767 | // N (ON): Other Neutrals |
| 7768 | |
| 7769 | // Returns null if characters are ordered as they appear |
| 7770 | // (left-to-right), or an array of sections ({from, to, level} |
| 7771 | // objects) in the order in which they occur visually. |
| 7772 | var bidiOrdering = (function() { |
| 7773 | // Character types for codepoints 0 to 0xff |
| 7774 | var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN"; |
| 7775 | // Character types for codepoints 0x600 to 0x6ff |
| 7776 | var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm"; |
| 7777 | function charType(code) { |
| 7778 | if (code <= 0xf7) return lowTypes.charAt(code); |
| 7779 | else if (0x590 <= code && code <= 0x5f4) return "R"; |
| 7780 | else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600); |
| 7781 | else if (0x6ee <= code && code <= 0x8ac) return "r"; |
| 7782 | else if (0x2000 <= code && code <= 0x200b) return "w"; |
| 7783 | else if (code == 0x200c) return "b"; |
| 7784 | else return "L"; |
| 7785 | } |
| 7786 | |
| 7787 | var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; |
| 7788 | var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; |
| 7789 | // Browsers seem to always treat the boundaries of block elements as being L. |
| 7790 | var outerType = "L"; |
| 7791 | |
| 7792 | function BidiSpan(level, from, to) { |
| 7793 | this.level = level; |
| 7794 | this.from = from; this.to = to; |
| 7795 | } |
| 7796 | |
| 7797 | return function(str) { |
| 7798 | if (!bidiRE.test(str)) return false; |
| 7799 | var len = str.length, types = []; |
| 7800 | for (var i = 0, type; i < len; ++i) |
| 7801 | types.push(type = charType(str.charCodeAt(i))); |
| 7802 | |
| 7803 | // W1. Examine each non-spacing mark (NSM) in the level run, and |
| 7804 | // change the type of the NSM to the type of the previous |
| 7805 | // character. If the NSM is at the start of the level run, it will |
| 7806 | // get the type of sor. |
| 7807 | for (var i = 0, prev = outerType; i < len; ++i) { |
| 7808 | var type = types[i]; |
| 7809 | if (type == "m") types[i] = prev; |
| 7810 | else prev = type; |
| 7811 | } |
| 7812 | |
| 7813 | // W2. Search backwards from each instance of a European number |
| 7814 | // until the first strong type (R, L, AL, or sor) is found. If an |
| 7815 | // AL is found, change the type of the European number to Arabic |
| 7816 | // number. |
| 7817 | // W3. Change all ALs to R. |
| 7818 | for (var i = 0, cur = outerType; i < len; ++i) { |
| 7819 | var type = types[i]; |
| 7820 | if (type == "1" && cur == "r") types[i] = "n"; |
| 7821 | else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } |
| 7822 | } |
| 7823 | |
| 7824 | // W4. A single European separator between two European numbers |
| 7825 | // changes to a European number. A single common separator between |
| 7826 | // two numbers of the same type changes to that type. |
| 7827 | for (var i = 1, prev = types[0]; i < len - 1; ++i) { |
| 7828 | var type = types[i]; |
| 7829 | if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; |
| 7830 | else if (type == "," && prev == types[i+1] && |
| 7831 | (prev == "1" || prev == "n")) types[i] = prev; |
| 7832 | prev = type; |
| 7833 | } |
| 7834 | |
| 7835 | // W5. A sequence of European terminators adjacent to European |
| 7836 | // numbers changes to all European numbers. |
| 7837 | // W6. Otherwise, separators and terminators change to Other |
| 7838 | // Neutral. |
| 7839 | for (var i = 0; i < len; ++i) { |
| 7840 | var type = types[i]; |
| 7841 | if (type == ",") types[i] = "N"; |
| 7842 | else if (type == "%") { |
| 7843 | for (var end = i + 1; end < len && types[end] == "%"; ++end) {} |
| 7844 | var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"; |
| 7845 | for (var j = i; j < end; ++j) types[j] = replace; |
| 7846 | i = end - 1; |
| 7847 | } |
| 7848 | } |
| 7849 | |
| 7850 | // W7. Search backwards from each instance of a European number |
| 7851 | // until the first strong type (R, L, or sor) is found. If an L is |
| 7852 | // found, then change the type of the European number to L. |
| 7853 | for (var i = 0, cur = outerType; i < len; ++i) { |
| 7854 | var type = types[i]; |
| 7855 | if (cur == "L" && type == "1") types[i] = "L"; |
| 7856 | else if (isStrong.test(type)) cur = type; |
| 7857 | } |
| 7858 | |
| 7859 | // N1. A sequence of neutrals takes the direction of the |
| 7860 | // surrounding strong text if the text on both sides has the same |
| 7861 | // direction. European and Arabic numbers act as if they were R in |
| 7862 | // terms of their influence on neutrals. Start-of-level-run (sor) |
| 7863 | // and end-of-level-run (eor) are used at level run boundaries. |
| 7864 | // N2. Any remaining neutrals take the embedding direction. |
| 7865 | for (var i = 0; i < len; ++i) { |
| 7866 | if (isNeutral.test(types[i])) { |
| 7867 | for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} |
| 7868 | var before = (i ? types[i-1] : outerType) == "L"; |
| 7869 | var after = (end < len ? types[end] : outerType) == "L"; |
| 7870 | var replace = before || after ? "L" : "R"; |
| 7871 | for (var j = i; j < end; ++j) types[j] = replace; |
| 7872 | i = end - 1; |
| 7873 | } |
| 7874 | } |
| 7875 | |
| 7876 | // Here we depart from the documented algorithm, in order to avoid |
| 7877 | // building up an actual levels array. Since there are only three |
| 7878 | // levels (0, 1, 2) in an implementation that doesn't take |
| 7879 | // explicit embedding into account, we can build up the order on |
| 7880 | // the fly, without following the level-based algorithm. |
| 7881 | var order = [], m; |
| 7882 | for (var i = 0; i < len;) { |
| 7883 | if (countsAsLeft.test(types[i])) { |
| 7884 | var start = i; |
| 7885 | for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} |
| 7886 | order.push(new BidiSpan(0, start, i)); |
| 7887 | } else { |
| 7888 | var pos = i, at = order.length; |
| 7889 | for (++i; i < len && types[i] != "L"; ++i) {} |
| 7890 | for (var j = pos; j < i;) { |
| 7891 | if (countsAsNum.test(types[j])) { |
| 7892 | if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j)); |
| 7893 | var nstart = j; |
| 7894 | for (++j; j < i && countsAsNum.test(types[j]); ++j) {} |
| 7895 | order.splice(at, 0, new BidiSpan(2, nstart, j)); |
| 7896 | pos = j; |
| 7897 | } else ++j; |
| 7898 | } |
| 7899 | if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i)); |
| 7900 | } |
| 7901 | } |
| 7902 | if (order[0].level == 1 && (m = str.match(/^\s+/))) { |
| 7903 | order[0].from = m[0].length; |
| 7904 | order.unshift(new BidiSpan(0, 0, m[0].length)); |
| 7905 | } |
| 7906 | if (lst(order).level == 1 && (m = str.match(/\s+$/))) { |
| 7907 | lst(order).to -= m[0].length; |
| 7908 | order.push(new BidiSpan(0, len - m[0].length, len)); |
| 7909 | } |
| 7910 | if (order[0].level != lst(order).level) |
| 7911 | order.push(new BidiSpan(order[0].level, len, len)); |
| 7912 | |
| 7913 | return order; |
| 7914 | }; |
| 7915 | })(); |
| 7916 | |
| 7917 | // THE END |
| 7918 | |
| 7919 | CodeMirror.version = "4.8.0"; |
| 7920 | |
| 7921 | return CodeMirror; |
| 7922 | }); |
| 7923 |