perfect-scrollbar.js
1325 lines
| 1 | /*! |
| 2 | * perfect-scrollbar v1.4.0 |
| 3 | * (c) 2018 Hyunje Jun |
| 4 | * @license MIT |
| 5 | */ |
| 6 | (function (global, factory) { |
| 7 | typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : |
| 8 | typeof define === 'function' && define.amd ? define(factory) : |
| 9 | (global.PerfectScrollbar = factory()); |
| 10 | }(this, (function () { 'use strict'; |
| 11 | |
| 12 | function get(element) { |
| 13 | return getComputedStyle(element); |
| 14 | } |
| 15 | |
| 16 | function set(element, obj) { |
| 17 | for (var key in obj) { |
| 18 | var val = obj[key]; |
| 19 | if (typeof val === 'number') { |
| 20 | val = val + "px"; |
| 21 | } |
| 22 | element.style[key] = val; |
| 23 | } |
| 24 | return element; |
| 25 | } |
| 26 | |
| 27 | function div(className) { |
| 28 | var div = document.createElement('div'); |
| 29 | div.className = className; |
| 30 | return div; |
| 31 | } |
| 32 | |
| 33 | var elMatches = |
| 34 | typeof Element !== 'undefined' && |
| 35 | (Element.prototype.matches || |
| 36 | Element.prototype.webkitMatchesSelector || |
| 37 | Element.prototype.mozMatchesSelector || |
| 38 | Element.prototype.msMatchesSelector); |
| 39 | |
| 40 | function matches(element, query) { |
| 41 | if (!elMatches) { |
| 42 | throw new Error('No element matching method supported'); |
| 43 | } |
| 44 | |
| 45 | return elMatches.call(element, query); |
| 46 | } |
| 47 | |
| 48 | function remove(element) { |
| 49 | if (element.remove) { |
| 50 | element.remove(); |
| 51 | } else { |
| 52 | if (element.parentNode) { |
| 53 | element.parentNode.removeChild(element); |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | function queryChildren(element, selector) { |
| 59 | return Array.prototype.filter.call(element.children, function (child) { return matches(child, selector); } |
| 60 | ); |
| 61 | } |
| 62 | |
| 63 | var cls = { |
| 64 | main: 'ps', |
| 65 | element: { |
| 66 | thumb: function (x) { return ("ps__thumb-" + x); }, |
| 67 | rail: function (x) { return ("ps__rail-" + x); }, |
| 68 | consuming: 'ps__child--consume', |
| 69 | }, |
| 70 | state: { |
| 71 | focus: 'ps--focus', |
| 72 | clicking: 'ps--clicking', |
| 73 | active: function (x) { return ("ps--active-" + x); }, |
| 74 | scrolling: function (x) { return ("ps--scrolling-" + x); }, |
| 75 | }, |
| 76 | }; |
| 77 | |
| 78 | /* |
| 79 | * Helper methods |
| 80 | */ |
| 81 | var scrollingClassTimeout = { x: null, y: null }; |
| 82 | |
| 83 | function addScrollingClass(i, x) { |
| 84 | var classList = i.element.classList; |
| 85 | var className = cls.state.scrolling(x); |
| 86 | |
| 87 | if (classList.contains(className)) { |
| 88 | clearTimeout(scrollingClassTimeout[x]); |
| 89 | } else { |
| 90 | classList.add(className); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | function removeScrollingClass(i, x) { |
| 95 | scrollingClassTimeout[x] = setTimeout( |
| 96 | function () { return i.isAlive && i.element.classList.remove(cls.state.scrolling(x)); }, |
| 97 | i.settings.scrollingThreshold |
| 98 | ); |
| 99 | } |
| 100 | |
| 101 | function setScrollingClassInstantly(i, x) { |
| 102 | addScrollingClass(i, x); |
| 103 | removeScrollingClass(i, x); |
| 104 | } |
| 105 | |
| 106 | var EventElement = function EventElement(element) { |
| 107 | this.element = element; |
| 108 | this.handlers = {}; |
| 109 | }; |
| 110 | |
| 111 | var prototypeAccessors = { isEmpty: { configurable: true } }; |
| 112 | |
| 113 | EventElement.prototype.bind = function bind (eventName, handler) { |
| 114 | if (typeof this.handlers[eventName] === 'undefined') { |
| 115 | this.handlers[eventName] = []; |
| 116 | } |
| 117 | this.handlers[eventName].push(handler); |
| 118 | this.element.addEventListener(eventName, handler, false); |
| 119 | }; |
| 120 | |
| 121 | EventElement.prototype.unbind = function unbind (eventName, target) { |
| 122 | var this$1 = this; |
| 123 | |
| 124 | this.handlers[eventName] = this.handlers[eventName].filter(function (handler) { |
| 125 | if (target && handler !== target) { |
| 126 | return true; |
| 127 | } |
| 128 | this$1.element.removeEventListener(eventName, handler, false); |
| 129 | return false; |
| 130 | }); |
| 131 | }; |
| 132 | |
| 133 | EventElement.prototype.unbindAll = function unbindAll () { |
| 134 | var this$1 = this; |
| 135 | |
| 136 | for (var name in this$1.handlers) { |
| 137 | this$1.unbind(name); |
| 138 | } |
| 139 | }; |
| 140 | |
| 141 | prototypeAccessors.isEmpty.get = function () { |
| 142 | var this$1 = this; |
| 143 | |
| 144 | return Object.keys(this.handlers).every( |
| 145 | function (key) { return this$1.handlers[key].length === 0; } |
| 146 | ); |
| 147 | }; |
| 148 | |
| 149 | Object.defineProperties( EventElement.prototype, prototypeAccessors ); |
| 150 | |
| 151 | var EventManager = function EventManager() { |
| 152 | this.eventElements = []; |
| 153 | }; |
| 154 | |
| 155 | EventManager.prototype.eventElement = function eventElement (element) { |
| 156 | var ee = this.eventElements.filter(function (ee) { return ee.element === element; })[0]; |
| 157 | if (!ee) { |
| 158 | ee = new EventElement(element); |
| 159 | this.eventElements.push(ee); |
| 160 | } |
| 161 | return ee; |
| 162 | }; |
| 163 | |
| 164 | EventManager.prototype.bind = function bind (element, eventName, handler) { |
| 165 | this.eventElement(element).bind(eventName, handler); |
| 166 | }; |
| 167 | |
| 168 | EventManager.prototype.unbind = function unbind (element, eventName, handler) { |
| 169 | var ee = this.eventElement(element); |
| 170 | ee.unbind(eventName, handler); |
| 171 | |
| 172 | if (ee.isEmpty) { |
| 173 | // remove |
| 174 | this.eventElements.splice(this.eventElements.indexOf(ee), 1); |
| 175 | } |
| 176 | }; |
| 177 | |
| 178 | EventManager.prototype.unbindAll = function unbindAll () { |
| 179 | this.eventElements.forEach(function (e) { return e.unbindAll(); }); |
| 180 | this.eventElements = []; |
| 181 | }; |
| 182 | |
| 183 | EventManager.prototype.once = function once (element, eventName, handler) { |
| 184 | var ee = this.eventElement(element); |
| 185 | var onceHandler = function (evt) { |
| 186 | ee.unbind(eventName, onceHandler); |
| 187 | handler(evt); |
| 188 | }; |
| 189 | ee.bind(eventName, onceHandler); |
| 190 | }; |
| 191 | |
| 192 | function createEvent(name) { |
| 193 | if (typeof window.CustomEvent === 'function') { |
| 194 | return new CustomEvent(name); |
| 195 | } else { |
| 196 | var evt = document.createEvent('CustomEvent'); |
| 197 | evt.initCustomEvent(name, false, false, undefined); |
| 198 | return evt; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | var processScrollDiff = function( |
| 203 | i, |
| 204 | axis, |
| 205 | diff, |
| 206 | useScrollingClass, |
| 207 | forceFireReachEvent |
| 208 | ) { |
| 209 | if ( useScrollingClass === void 0 ) useScrollingClass = true; |
| 210 | if ( forceFireReachEvent === void 0 ) forceFireReachEvent = false; |
| 211 | |
| 212 | var fields; |
| 213 | if (axis === 'top') { |
| 214 | fields = [ |
| 215 | 'contentHeight', |
| 216 | 'containerHeight', |
| 217 | 'scrollTop', |
| 218 | 'y', |
| 219 | 'up', |
| 220 | 'down' ]; |
| 221 | } else if (axis === 'left') { |
| 222 | fields = [ |
| 223 | 'contentWidth', |
| 224 | 'containerWidth', |
| 225 | 'scrollLeft', |
| 226 | 'x', |
| 227 | 'left', |
| 228 | 'right' ]; |
| 229 | } else { |
| 230 | throw new Error('A proper axis should be provided'); |
| 231 | } |
| 232 | |
| 233 | processScrollDiff$1(i, diff, fields, useScrollingClass, forceFireReachEvent); |
| 234 | }; |
| 235 | |
| 236 | function processScrollDiff$1( |
| 237 | i, |
| 238 | diff, |
| 239 | ref, |
| 240 | useScrollingClass, |
| 241 | forceFireReachEvent |
| 242 | ) { |
| 243 | var contentHeight = ref[0]; |
| 244 | var containerHeight = ref[1]; |
| 245 | var scrollTop = ref[2]; |
| 246 | var y = ref[3]; |
| 247 | var up = ref[4]; |
| 248 | var down = ref[5]; |
| 249 | if ( useScrollingClass === void 0 ) useScrollingClass = true; |
| 250 | if ( forceFireReachEvent === void 0 ) forceFireReachEvent = false; |
| 251 | |
| 252 | var element = i.element; |
| 253 | |
| 254 | // reset reach |
| 255 | i.reach[y] = null; |
| 256 | |
| 257 | // 1 for subpixel rounding |
| 258 | if (element[scrollTop] < 1) { |
| 259 | i.reach[y] = 'start'; |
| 260 | } |
| 261 | |
| 262 | // 1 for subpixel rounding |
| 263 | if (element[scrollTop] > i[contentHeight] - i[containerHeight] - 1) { |
| 264 | i.reach[y] = 'end'; |
| 265 | } |
| 266 | |
| 267 | if (diff) { |
| 268 | element.dispatchEvent(createEvent(("ps-scroll-" + y))); |
| 269 | |
| 270 | if (diff < 0) { |
| 271 | element.dispatchEvent(createEvent(("ps-scroll-" + up))); |
| 272 | } else if (diff > 0) { |
| 273 | element.dispatchEvent(createEvent(("ps-scroll-" + down))); |
| 274 | } |
| 275 | |
| 276 | if (useScrollingClass) { |
| 277 | setScrollingClassInstantly(i, y); |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | if (i.reach[y] && (diff || forceFireReachEvent)) { |
| 282 | element.dispatchEvent(createEvent(("ps-" + y + "-reach-" + (i.reach[y])))); |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | function toInt(x) { |
| 287 | return parseInt(x, 10) || 0; |
| 288 | } |
| 289 | |
| 290 | function isEditable(el) { |
| 291 | return ( |
| 292 | matches(el, 'input,[contenteditable]') || |
| 293 | matches(el, 'select,[contenteditable]') || |
| 294 | matches(el, 'textarea,[contenteditable]') || |
| 295 | matches(el, 'button,[contenteditable]') |
| 296 | ); |
| 297 | } |
| 298 | |
| 299 | function outerWidth(element) { |
| 300 | var styles = get(element); |
| 301 | return ( |
| 302 | toInt(styles.width) + |
| 303 | toInt(styles.paddingLeft) + |
| 304 | toInt(styles.paddingRight) + |
| 305 | toInt(styles.borderLeftWidth) + |
| 306 | toInt(styles.borderRightWidth) |
| 307 | ); |
| 308 | } |
| 309 | |
| 310 | var env = { |
| 311 | isWebKit: |
| 312 | typeof document !== 'undefined' && |
| 313 | 'WebkitAppearance' in document.documentElement.style, |
| 314 | supportsTouch: |
| 315 | typeof window !== 'undefined' && |
| 316 | ('ontouchstart' in window || |
| 317 | (window.DocumentTouch && document instanceof window.DocumentTouch)), |
| 318 | supportsIePointer: |
| 319 | typeof navigator !== 'undefined' && navigator.msMaxTouchPoints, |
| 320 | isChrome: |
| 321 | typeof navigator !== 'undefined' && |
| 322 | /Chrome/i.test(navigator && navigator.userAgent), |
| 323 | }; |
| 324 | |
| 325 | var updateGeometry = function(i) { |
| 326 | var element = i.element; |
| 327 | var roundedScrollTop = Math.floor(element.scrollTop); |
| 328 | |
| 329 | i.containerWidth = element.clientWidth; |
| 330 | i.containerHeight = element.clientHeight; |
| 331 | i.contentWidth = element.scrollWidth; |
| 332 | i.contentHeight = element.scrollHeight; |
| 333 | |
| 334 | if (!element.contains(i.scrollbarXRail)) { |
| 335 | // clean up and append |
| 336 | queryChildren(element, cls.element.rail('x')).forEach(function (el) { return remove(el); } |
| 337 | ); |
| 338 | element.appendChild(i.scrollbarXRail); |
| 339 | } |
| 340 | if (!element.contains(i.scrollbarYRail)) { |
| 341 | // clean up and append |
| 342 | queryChildren(element, cls.element.rail('y')).forEach(function (el) { return remove(el); } |
| 343 | ); |
| 344 | element.appendChild(i.scrollbarYRail); |
| 345 | } |
| 346 | |
| 347 | if ( |
| 348 | !i.settings.suppressScrollX && |
| 349 | i.containerWidth + i.settings.scrollXMarginOffset < i.contentWidth |
| 350 | ) { |
| 351 | i.scrollbarXActive = true; |
| 352 | i.railXWidth = i.containerWidth - i.railXMarginWidth; |
| 353 | i.railXRatio = i.containerWidth / i.railXWidth; |
| 354 | i.scrollbarXWidth = getThumbSize( |
| 355 | i, |
| 356 | toInt(i.railXWidth * i.containerWidth / i.contentWidth) |
| 357 | ); |
| 358 | i.scrollbarXLeft = toInt( |
| 359 | (i.negativeScrollAdjustment + element.scrollLeft) * |
| 360 | (i.railXWidth - i.scrollbarXWidth) / |
| 361 | (i.contentWidth - i.containerWidth) |
| 362 | ); |
| 363 | } else { |
| 364 | i.scrollbarXActive = false; |
| 365 | } |
| 366 | |
| 367 | if ( |
| 368 | !i.settings.suppressScrollY && |
| 369 | i.containerHeight + i.settings.scrollYMarginOffset < i.contentHeight |
| 370 | ) { |
| 371 | i.scrollbarYActive = true; |
| 372 | i.railYHeight = i.containerHeight - i.railYMarginHeight; |
| 373 | i.railYRatio = i.containerHeight / i.railYHeight; |
| 374 | i.scrollbarYHeight = getThumbSize( |
| 375 | i, |
| 376 | toInt(i.railYHeight * i.containerHeight / i.contentHeight) |
| 377 | ); |
| 378 | i.scrollbarYTop = toInt( |
| 379 | roundedScrollTop * |
| 380 | (i.railYHeight - i.scrollbarYHeight) / |
| 381 | (i.contentHeight - i.containerHeight) |
| 382 | ); |
| 383 | } else { |
| 384 | i.scrollbarYActive = false; |
| 385 | } |
| 386 | |
| 387 | if (i.scrollbarXLeft >= i.railXWidth - i.scrollbarXWidth) { |
| 388 | i.scrollbarXLeft = i.railXWidth - i.scrollbarXWidth; |
| 389 | } |
| 390 | if (i.scrollbarYTop >= i.railYHeight - i.scrollbarYHeight) { |
| 391 | i.scrollbarYTop = i.railYHeight - i.scrollbarYHeight; |
| 392 | } |
| 393 | |
| 394 | updateCss(element, i); |
| 395 | |
| 396 | if (i.scrollbarXActive) { |
| 397 | element.classList.add(cls.state.active('x')); |
| 398 | } else { |
| 399 | element.classList.remove(cls.state.active('x')); |
| 400 | i.scrollbarXWidth = 0; |
| 401 | i.scrollbarXLeft = 0; |
| 402 | element.scrollLeft = 0; |
| 403 | } |
| 404 | if (i.scrollbarYActive) { |
| 405 | element.classList.add(cls.state.active('y')); |
| 406 | } else { |
| 407 | element.classList.remove(cls.state.active('y')); |
| 408 | i.scrollbarYHeight = 0; |
| 409 | i.scrollbarYTop = 0; |
| 410 | element.scrollTop = 0; |
| 411 | } |
| 412 | }; |
| 413 | |
| 414 | function getThumbSize(i, thumbSize) { |
| 415 | if (i.settings.minScrollbarLength) { |
| 416 | thumbSize = Math.max(thumbSize, i.settings.minScrollbarLength); |
| 417 | } |
| 418 | if (i.settings.maxScrollbarLength) { |
| 419 | thumbSize = Math.min(thumbSize, i.settings.maxScrollbarLength); |
| 420 | } |
| 421 | return thumbSize; |
| 422 | } |
| 423 | |
| 424 | function updateCss(element, i) { |
| 425 | var xRailOffset = { width: i.railXWidth }; |
| 426 | var roundedScrollTop = Math.floor(element.scrollTop); |
| 427 | |
| 428 | if (i.isRtl) { |
| 429 | xRailOffset.left = |
| 430 | i.negativeScrollAdjustment + |
| 431 | element.scrollLeft + |
| 432 | i.containerWidth - |
| 433 | i.contentWidth; |
| 434 | } else { |
| 435 | xRailOffset.left = element.scrollLeft; |
| 436 | } |
| 437 | if (i.isScrollbarXUsingBottom) { |
| 438 | xRailOffset.bottom = i.scrollbarXBottom - roundedScrollTop; |
| 439 | } else { |
| 440 | xRailOffset.top = i.scrollbarXTop + roundedScrollTop; |
| 441 | } |
| 442 | set(i.scrollbarXRail, xRailOffset); |
| 443 | |
| 444 | var yRailOffset = { top: roundedScrollTop, height: i.railYHeight }; |
| 445 | if (i.isScrollbarYUsingRight) { |
| 446 | if (i.isRtl) { |
| 447 | yRailOffset.right = |
| 448 | i.contentWidth - |
| 449 | (i.negativeScrollAdjustment + element.scrollLeft) - |
| 450 | i.scrollbarYRight - |
| 451 | i.scrollbarYOuterWidth; |
| 452 | } else { |
| 453 | yRailOffset.right = i.scrollbarYRight - element.scrollLeft; |
| 454 | } |
| 455 | } else { |
| 456 | if (i.isRtl) { |
| 457 | yRailOffset.left = |
| 458 | i.negativeScrollAdjustment + |
| 459 | element.scrollLeft + |
| 460 | i.containerWidth * 2 - |
| 461 | i.contentWidth - |
| 462 | i.scrollbarYLeft - |
| 463 | i.scrollbarYOuterWidth; |
| 464 | } else { |
| 465 | yRailOffset.left = i.scrollbarYLeft + element.scrollLeft; |
| 466 | } |
| 467 | } |
| 468 | set(i.scrollbarYRail, yRailOffset); |
| 469 | |
| 470 | set(i.scrollbarX, { |
| 471 | left: i.scrollbarXLeft, |
| 472 | width: i.scrollbarXWidth - i.railBorderXWidth, |
| 473 | }); |
| 474 | set(i.scrollbarY, { |
| 475 | top: i.scrollbarYTop, |
| 476 | height: i.scrollbarYHeight - i.railBorderYWidth, |
| 477 | }); |
| 478 | } |
| 479 | |
| 480 | var clickRail = function(i) { |
| 481 | i.event.bind(i.scrollbarY, 'mousedown', function (e) { return e.stopPropagation(); }); |
| 482 | i.event.bind(i.scrollbarYRail, 'mousedown', function (e) { |
| 483 | var positionTop = |
| 484 | e.pageY - |
| 485 | window.pageYOffset - |
| 486 | i.scrollbarYRail.getBoundingClientRect().top; |
| 487 | var direction = positionTop > i.scrollbarYTop ? 1 : -1; |
| 488 | |
| 489 | i.element.scrollTop += direction * i.containerHeight; |
| 490 | updateGeometry(i); |
| 491 | |
| 492 | e.stopPropagation(); |
| 493 | }); |
| 494 | |
| 495 | i.event.bind(i.scrollbarX, 'mousedown', function (e) { return e.stopPropagation(); }); |
| 496 | i.event.bind(i.scrollbarXRail, 'mousedown', function (e) { |
| 497 | var positionLeft = |
| 498 | e.pageX - |
| 499 | window.pageXOffset - |
| 500 | i.scrollbarXRail.getBoundingClientRect().left; |
| 501 | var direction = positionLeft > i.scrollbarXLeft ? 1 : -1; |
| 502 | |
| 503 | i.element.scrollLeft += direction * i.containerWidth; |
| 504 | updateGeometry(i); |
| 505 | |
| 506 | e.stopPropagation(); |
| 507 | }); |
| 508 | }; |
| 509 | |
| 510 | var dragThumb = function(i) { |
| 511 | bindMouseScrollHandler(i, [ |
| 512 | 'containerWidth', |
| 513 | 'contentWidth', |
| 514 | 'pageX', |
| 515 | 'railXWidth', |
| 516 | 'scrollbarX', |
| 517 | 'scrollbarXWidth', |
| 518 | 'scrollLeft', |
| 519 | 'x', |
| 520 | 'scrollbarXRail' ]); |
| 521 | bindMouseScrollHandler(i, [ |
| 522 | 'containerHeight', |
| 523 | 'contentHeight', |
| 524 | 'pageY', |
| 525 | 'railYHeight', |
| 526 | 'scrollbarY', |
| 527 | 'scrollbarYHeight', |
| 528 | 'scrollTop', |
| 529 | 'y', |
| 530 | 'scrollbarYRail' ]); |
| 531 | }; |
| 532 | |
| 533 | function bindMouseScrollHandler( |
| 534 | i, |
| 535 | ref |
| 536 | ) { |
| 537 | var containerHeight = ref[0]; |
| 538 | var contentHeight = ref[1]; |
| 539 | var pageY = ref[2]; |
| 540 | var railYHeight = ref[3]; |
| 541 | var scrollbarY = ref[4]; |
| 542 | var scrollbarYHeight = ref[5]; |
| 543 | var scrollTop = ref[6]; |
| 544 | var y = ref[7]; |
| 545 | var scrollbarYRail = ref[8]; |
| 546 | |
| 547 | var element = i.element; |
| 548 | |
| 549 | var startingScrollTop = null; |
| 550 | var startingMousePageY = null; |
| 551 | var scrollBy = null; |
| 552 | |
| 553 | function mouseMoveHandler(e) { |
| 554 | element[scrollTop] = |
| 555 | startingScrollTop + scrollBy * (e[pageY] - startingMousePageY); |
| 556 | addScrollingClass(i, y); |
| 557 | updateGeometry(i); |
| 558 | |
| 559 | e.stopPropagation(); |
| 560 | e.preventDefault(); |
| 561 | } |
| 562 | |
| 563 | function mouseUpHandler() { |
| 564 | removeScrollingClass(i, y); |
| 565 | i[scrollbarYRail].classList.remove(cls.state.clicking); |
| 566 | i.event.unbind(i.ownerDocument, 'mousemove', mouseMoveHandler); |
| 567 | } |
| 568 | |
| 569 | i.event.bind(i[scrollbarY], 'mousedown', function (e) { |
| 570 | startingScrollTop = element[scrollTop]; |
| 571 | startingMousePageY = e[pageY]; |
| 572 | scrollBy = |
| 573 | (i[contentHeight] - i[containerHeight]) / |
| 574 | (i[railYHeight] - i[scrollbarYHeight]); |
| 575 | |
| 576 | i.event.bind(i.ownerDocument, 'mousemove', mouseMoveHandler); |
| 577 | i.event.once(i.ownerDocument, 'mouseup', mouseUpHandler); |
| 578 | |
| 579 | i[scrollbarYRail].classList.add(cls.state.clicking); |
| 580 | |
| 581 | e.stopPropagation(); |
| 582 | e.preventDefault(); |
| 583 | }); |
| 584 | } |
| 585 | |
| 586 | var keyboard = function(i) { |
| 587 | var element = i.element; |
| 588 | |
| 589 | var elementHovered = function () { return matches(element, ':hover'); }; |
| 590 | var scrollbarFocused = function () { return matches(i.scrollbarX, ':focus') || matches(i.scrollbarY, ':focus'); }; |
| 591 | |
| 592 | function shouldPreventDefault(deltaX, deltaY) { |
| 593 | var scrollTop = Math.floor(element.scrollTop); |
| 594 | if (deltaX === 0) { |
| 595 | if (!i.scrollbarYActive) { |
| 596 | return false; |
| 597 | } |
| 598 | if ( |
| 599 | (scrollTop === 0 && deltaY > 0) || |
| 600 | (scrollTop >= i.contentHeight - i.containerHeight && deltaY < 0) |
| 601 | ) { |
| 602 | return !i.settings.wheelPropagation; |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | var scrollLeft = element.scrollLeft; |
| 607 | if (deltaY === 0) { |
| 608 | if (!i.scrollbarXActive) { |
| 609 | return false; |
| 610 | } |
| 611 | if ( |
| 612 | (scrollLeft === 0 && deltaX < 0) || |
| 613 | (scrollLeft >= i.contentWidth - i.containerWidth && deltaX > 0) |
| 614 | ) { |
| 615 | return !i.settings.wheelPropagation; |
| 616 | } |
| 617 | } |
| 618 | return true; |
| 619 | } |
| 620 | |
| 621 | i.event.bind(i.ownerDocument, 'keydown', function (e) { |
| 622 | if ( |
| 623 | (e.isDefaultPrevented && e.isDefaultPrevented()) || |
| 624 | e.defaultPrevented |
| 625 | ) { |
| 626 | return; |
| 627 | } |
| 628 | |
| 629 | if (!elementHovered() && !scrollbarFocused()) { |
| 630 | return; |
| 631 | } |
| 632 | |
| 633 | var activeElement = document.activeElement |
| 634 | ? document.activeElement |
| 635 | : i.ownerDocument.activeElement; |
| 636 | if (activeElement) { |
| 637 | if (activeElement.tagName === 'IFRAME') { |
| 638 | activeElement = activeElement.contentDocument.activeElement; |
| 639 | } else { |
| 640 | // go deeper if element is a webcomponent |
| 641 | while (activeElement.shadowRoot) { |
| 642 | activeElement = activeElement.shadowRoot.activeElement; |
| 643 | } |
| 644 | } |
| 645 | if (isEditable(activeElement)) { |
| 646 | return; |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | var deltaX = 0; |
| 651 | var deltaY = 0; |
| 652 | |
| 653 | switch (e.which) { |
| 654 | case 37: // left |
| 655 | if (e.metaKey) { |
| 656 | deltaX = -i.contentWidth; |
| 657 | } else if (e.altKey) { |
| 658 | deltaX = -i.containerWidth; |
| 659 | } else { |
| 660 | deltaX = -30; |
| 661 | } |
| 662 | break; |
| 663 | case 38: // up |
| 664 | if (e.metaKey) { |
| 665 | deltaY = i.contentHeight; |
| 666 | } else if (e.altKey) { |
| 667 | deltaY = i.containerHeight; |
| 668 | } else { |
| 669 | deltaY = 30; |
| 670 | } |
| 671 | break; |
| 672 | case 39: // right |
| 673 | if (e.metaKey) { |
| 674 | deltaX = i.contentWidth; |
| 675 | } else if (e.altKey) { |
| 676 | deltaX = i.containerWidth; |
| 677 | } else { |
| 678 | deltaX = 30; |
| 679 | } |
| 680 | break; |
| 681 | case 40: // down |
| 682 | if (e.metaKey) { |
| 683 | deltaY = -i.contentHeight; |
| 684 | } else if (e.altKey) { |
| 685 | deltaY = -i.containerHeight; |
| 686 | } else { |
| 687 | deltaY = -30; |
| 688 | } |
| 689 | break; |
| 690 | case 32: // space bar |
| 691 | if (e.shiftKey) { |
| 692 | deltaY = i.containerHeight; |
| 693 | } else { |
| 694 | deltaY = -i.containerHeight; |
| 695 | } |
| 696 | break; |
| 697 | case 33: // page up |
| 698 | deltaY = i.containerHeight; |
| 699 | break; |
| 700 | case 34: // page down |
| 701 | deltaY = -i.containerHeight; |
| 702 | break; |
| 703 | case 36: // home |
| 704 | deltaY = i.contentHeight; |
| 705 | break; |
| 706 | case 35: // end |
| 707 | deltaY = -i.contentHeight; |
| 708 | break; |
| 709 | default: |
| 710 | return; |
| 711 | } |
| 712 | |
| 713 | if (i.settings.suppressScrollX && deltaX !== 0) { |
| 714 | return; |
| 715 | } |
| 716 | if (i.settings.suppressScrollY && deltaY !== 0) { |
| 717 | return; |
| 718 | } |
| 719 | |
| 720 | element.scrollTop -= deltaY; |
| 721 | element.scrollLeft += deltaX; |
| 722 | updateGeometry(i); |
| 723 | |
| 724 | if (shouldPreventDefault(deltaX, deltaY)) { |
| 725 | e.preventDefault(); |
| 726 | } |
| 727 | }); |
| 728 | }; |
| 729 | |
| 730 | var wheel = function(i) { |
| 731 | var element = i.element; |
| 732 | |
| 733 | function shouldPreventDefault(deltaX, deltaY) { |
| 734 | var roundedScrollTop = Math.floor(element.scrollTop); |
| 735 | var isTop = element.scrollTop === 0; |
| 736 | var isBottom = |
| 737 | roundedScrollTop + element.offsetHeight === element.scrollHeight; |
| 738 | var isLeft = element.scrollLeft === 0; |
| 739 | var isRight = |
| 740 | element.scrollLeft + element.offsetWidth === element.scrollWidth; |
| 741 | |
| 742 | var hitsBound; |
| 743 | |
| 744 | // pick axis with primary direction |
| 745 | if (Math.abs(deltaY) > Math.abs(deltaX)) { |
| 746 | hitsBound = isTop || isBottom; |
| 747 | } else { |
| 748 | hitsBound = isLeft || isRight; |
| 749 | } |
| 750 | |
| 751 | return hitsBound ? !i.settings.wheelPropagation : true; |
| 752 | } |
| 753 | |
| 754 | function getDeltaFromEvent(e) { |
| 755 | var deltaX = e.deltaX; |
| 756 | var deltaY = -1 * e.deltaY; |
| 757 | |
| 758 | if (typeof deltaX === 'undefined' || typeof deltaY === 'undefined') { |
| 759 | // OS X Safari |
| 760 | deltaX = -1 * e.wheelDeltaX / 6; |
| 761 | deltaY = e.wheelDeltaY / 6; |
| 762 | } |
| 763 | |
| 764 | if (e.deltaMode && e.deltaMode === 1) { |
| 765 | // Firefox in deltaMode 1: Line scrolling |
| 766 | deltaX *= 10; |
| 767 | deltaY *= 10; |
| 768 | } |
| 769 | |
| 770 | if (deltaX !== deltaX && deltaY !== deltaY /* NaN checks */) { |
| 771 | // IE in some mouse drivers |
| 772 | deltaX = 0; |
| 773 | deltaY = e.wheelDelta; |
| 774 | } |
| 775 | |
| 776 | if (e.shiftKey) { |
| 777 | // reverse axis with shift key |
| 778 | return [-deltaY, -deltaX]; |
| 779 | } |
| 780 | return [deltaX, deltaY]; |
| 781 | } |
| 782 | |
| 783 | function shouldBeConsumedByChild(target, deltaX, deltaY) { |
| 784 | // FIXME: this is a workaround for <select> issue in FF and IE #571 |
| 785 | if (!env.isWebKit && element.querySelector('select:focus')) { |
| 786 | return true; |
| 787 | } |
| 788 | |
| 789 | if (!element.contains(target)) { |
| 790 | return false; |
| 791 | } |
| 792 | |
| 793 | var cursor = target; |
| 794 | |
| 795 | while (cursor && cursor !== element) { |
| 796 | if (cursor.classList.contains(cls.element.consuming)) { |
| 797 | return true; |
| 798 | } |
| 799 | |
| 800 | var style = get(cursor); |
| 801 | var overflow = [style.overflow, style.overflowX, style.overflowY].join( |
| 802 | '' |
| 803 | ); |
| 804 | |
| 805 | // if scrollable |
| 806 | if (overflow.match(/(scroll|auto)/)) { |
| 807 | var maxScrollTop = cursor.scrollHeight - cursor.clientHeight; |
| 808 | if (maxScrollTop > 0) { |
| 809 | if ( |
| 810 | !(cursor.scrollTop === 0 && deltaY > 0) && |
| 811 | !(cursor.scrollTop === maxScrollTop && deltaY < 0) |
| 812 | ) { |
| 813 | return true; |
| 814 | } |
| 815 | } |
| 816 | var maxScrollLeft = cursor.scrollWidth - cursor.clientWidth; |
| 817 | if (maxScrollLeft > 0) { |
| 818 | if ( |
| 819 | !(cursor.scrollLeft === 0 && deltaX < 0) && |
| 820 | !(cursor.scrollLeft === maxScrollLeft && deltaX > 0) |
| 821 | ) { |
| 822 | return true; |
| 823 | } |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | cursor = cursor.parentNode; |
| 828 | } |
| 829 | |
| 830 | return false; |
| 831 | } |
| 832 | |
| 833 | function mousewheelHandler(e) { |
| 834 | var ref = getDeltaFromEvent(e); |
| 835 | var deltaX = ref[0]; |
| 836 | var deltaY = ref[1]; |
| 837 | |
| 838 | if (shouldBeConsumedByChild(e.target, deltaX, deltaY)) { |
| 839 | return; |
| 840 | } |
| 841 | |
| 842 | var shouldPrevent = false; |
| 843 | if (!i.settings.useBothWheelAxes) { |
| 844 | // deltaX will only be used for horizontal scrolling and deltaY will |
| 845 | // only be used for vertical scrolling - this is the default |
| 846 | element.scrollTop -= deltaY * i.settings.wheelSpeed; |
| 847 | element.scrollLeft += deltaX * i.settings.wheelSpeed; |
| 848 | } else if (i.scrollbarYActive && !i.scrollbarXActive) { |
| 849 | // only vertical scrollbar is active and useBothWheelAxes option is |
| 850 | // active, so let's scroll vertical bar using both mouse wheel axes |
| 851 | if (deltaY) { |
| 852 | element.scrollTop -= deltaY * i.settings.wheelSpeed; |
| 853 | } else { |
| 854 | element.scrollTop += deltaX * i.settings.wheelSpeed; |
| 855 | } |
| 856 | shouldPrevent = true; |
| 857 | } else if (i.scrollbarXActive && !i.scrollbarYActive) { |
| 858 | // useBothWheelAxes and only horizontal bar is active, so use both |
| 859 | // wheel axes for horizontal bar |
| 860 | if (deltaX) { |
| 861 | element.scrollLeft += deltaX * i.settings.wheelSpeed; |
| 862 | } else { |
| 863 | element.scrollLeft -= deltaY * i.settings.wheelSpeed; |
| 864 | } |
| 865 | shouldPrevent = true; |
| 866 | } |
| 867 | |
| 868 | updateGeometry(i); |
| 869 | |
| 870 | shouldPrevent = shouldPrevent || shouldPreventDefault(deltaX, deltaY); |
| 871 | if (shouldPrevent && !e.ctrlKey) { |
| 872 | e.stopPropagation(); |
| 873 | e.preventDefault(); |
| 874 | } |
| 875 | } |
| 876 | |
| 877 | if (typeof window.onwheel !== 'undefined') { |
| 878 | i.event.bind(element, 'wheel', mousewheelHandler); |
| 879 | } else if (typeof window.onmousewheel !== 'undefined') { |
| 880 | i.event.bind(element, 'mousewheel', mousewheelHandler); |
| 881 | } |
| 882 | }; |
| 883 | |
| 884 | var touch = function(i) { |
| 885 | if (!env.supportsTouch && !env.supportsIePointer) { |
| 886 | return; |
| 887 | } |
| 888 | |
| 889 | var element = i.element; |
| 890 | |
| 891 | function shouldPrevent(deltaX, deltaY) { |
| 892 | var scrollTop = Math.floor(element.scrollTop); |
| 893 | var scrollLeft = element.scrollLeft; |
| 894 | var magnitudeX = Math.abs(deltaX); |
| 895 | var magnitudeY = Math.abs(deltaY); |
| 896 | |
| 897 | if (magnitudeY > magnitudeX) { |
| 898 | // user is perhaps trying to swipe up/down the page |
| 899 | |
| 900 | if ( |
| 901 | (deltaY < 0 && scrollTop === i.contentHeight - i.containerHeight) || |
| 902 | (deltaY > 0 && scrollTop === 0) |
| 903 | ) { |
| 904 | // set prevent for mobile Chrome refresh |
| 905 | return window.scrollY === 0 && deltaY > 0 && env.isChrome; |
| 906 | } |
| 907 | } else if (magnitudeX > magnitudeY) { |
| 908 | // user is perhaps trying to swipe left/right across the page |
| 909 | |
| 910 | if ( |
| 911 | (deltaX < 0 && scrollLeft === i.contentWidth - i.containerWidth) || |
| 912 | (deltaX > 0 && scrollLeft === 0) |
| 913 | ) { |
| 914 | return true; |
| 915 | } |
| 916 | } |
| 917 | |
| 918 | return true; |
| 919 | } |
| 920 | |
| 921 | function applyTouchMove(differenceX, differenceY) { |
| 922 | element.scrollTop -= differenceY; |
| 923 | element.scrollLeft -= differenceX; |
| 924 | |
| 925 | updateGeometry(i); |
| 926 | } |
| 927 | |
| 928 | var startOffset = {}; |
| 929 | var startTime = 0; |
| 930 | var speed = {}; |
| 931 | var easingLoop = null; |
| 932 | |
| 933 | function getTouch(e) { |
| 934 | if (e.targetTouches) { |
| 935 | return e.targetTouches[0]; |
| 936 | } else { |
| 937 | // Maybe IE pointer |
| 938 | return e; |
| 939 | } |
| 940 | } |
| 941 | |
| 942 | function shouldHandle(e) { |
| 943 | if (e.pointerType && e.pointerType === 'pen' && e.buttons === 0) { |
| 944 | return false; |
| 945 | } |
| 946 | if (e.targetTouches && e.targetTouches.length === 1) { |
| 947 | return true; |
| 948 | } |
| 949 | if ( |
| 950 | e.pointerType && |
| 951 | e.pointerType !== 'mouse' && |
| 952 | e.pointerType !== e.MSPOINTER_TYPE_MOUSE |
| 953 | ) { |
| 954 | return true; |
| 955 | } |
| 956 | return false; |
| 957 | } |
| 958 | |
| 959 | function touchStart(e) { |
| 960 | if (!shouldHandle(e)) { |
| 961 | return; |
| 962 | } |
| 963 | |
| 964 | var touch = getTouch(e); |
| 965 | |
| 966 | startOffset.pageX = touch.pageX; |
| 967 | startOffset.pageY = touch.pageY; |
| 968 | |
| 969 | startTime = new Date().getTime(); |
| 970 | |
| 971 | if (easingLoop !== null) { |
| 972 | clearInterval(easingLoop); |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | function shouldBeConsumedByChild(target, deltaX, deltaY) { |
| 977 | if (!element.contains(target)) { |
| 978 | return false; |
| 979 | } |
| 980 | |
| 981 | var cursor = target; |
| 982 | |
| 983 | while (cursor && cursor !== element) { |
| 984 | if (cursor.classList.contains(cls.element.consuming)) { |
| 985 | return true; |
| 986 | } |
| 987 | |
| 988 | var style = get(cursor); |
| 989 | var overflow = [style.overflow, style.overflowX, style.overflowY].join( |
| 990 | '' |
| 991 | ); |
| 992 | |
| 993 | // if scrollable |
| 994 | if (overflow.match(/(scroll|auto)/)) { |
| 995 | var maxScrollTop = cursor.scrollHeight - cursor.clientHeight; |
| 996 | if (maxScrollTop > 0) { |
| 997 | if ( |
| 998 | !(cursor.scrollTop === 0 && deltaY > 0) && |
| 999 | !(cursor.scrollTop === maxScrollTop && deltaY < 0) |
| 1000 | ) { |
| 1001 | return true; |
| 1002 | } |
| 1003 | } |
| 1004 | var maxScrollLeft = cursor.scrollLeft - cursor.clientWidth; |
| 1005 | if (maxScrollLeft > 0) { |
| 1006 | if ( |
| 1007 | !(cursor.scrollLeft === 0 && deltaX < 0) && |
| 1008 | !(cursor.scrollLeft === maxScrollLeft && deltaX > 0) |
| 1009 | ) { |
| 1010 | return true; |
| 1011 | } |
| 1012 | } |
| 1013 | } |
| 1014 | |
| 1015 | cursor = cursor.parentNode; |
| 1016 | } |
| 1017 | |
| 1018 | return false; |
| 1019 | } |
| 1020 | |
| 1021 | function touchMove(e) { |
| 1022 | if (shouldHandle(e)) { |
| 1023 | var touch = getTouch(e); |
| 1024 | |
| 1025 | var currentOffset = { pageX: touch.pageX, pageY: touch.pageY }; |
| 1026 | |
| 1027 | var differenceX = currentOffset.pageX - startOffset.pageX; |
| 1028 | var differenceY = currentOffset.pageY - startOffset.pageY; |
| 1029 | |
| 1030 | if (shouldBeConsumedByChild(e.target, differenceX, differenceY)) { |
| 1031 | return; |
| 1032 | } |
| 1033 | |
| 1034 | applyTouchMove(differenceX, differenceY); |
| 1035 | startOffset = currentOffset; |
| 1036 | |
| 1037 | var currentTime = new Date().getTime(); |
| 1038 | |
| 1039 | var timeGap = currentTime - startTime; |
| 1040 | if (timeGap > 0) { |
| 1041 | speed.x = differenceX / timeGap; |
| 1042 | speed.y = differenceY / timeGap; |
| 1043 | startTime = currentTime; |
| 1044 | } |
| 1045 | |
| 1046 | if (shouldPrevent(differenceX, differenceY)) { |
| 1047 | e.preventDefault(); |
| 1048 | } |
| 1049 | } |
| 1050 | } |
| 1051 | function touchEnd() { |
| 1052 | if (i.settings.swipeEasing) { |
| 1053 | clearInterval(easingLoop); |
| 1054 | easingLoop = setInterval(function() { |
| 1055 | if (i.isInitialized) { |
| 1056 | clearInterval(easingLoop); |
| 1057 | return; |
| 1058 | } |
| 1059 | |
| 1060 | if (!speed.x && !speed.y) { |
| 1061 | clearInterval(easingLoop); |
| 1062 | return; |
| 1063 | } |
| 1064 | |
| 1065 | if (Math.abs(speed.x) < 0.01 && Math.abs(speed.y) < 0.01) { |
| 1066 | clearInterval(easingLoop); |
| 1067 | return; |
| 1068 | } |
| 1069 | |
| 1070 | applyTouchMove(speed.x * 30, speed.y * 30); |
| 1071 | |
| 1072 | speed.x *= 0.8; |
| 1073 | speed.y *= 0.8; |
| 1074 | }, 10); |
| 1075 | } |
| 1076 | } |
| 1077 | |
| 1078 | if (env.supportsTouch) { |
| 1079 | i.event.bind(element, 'touchstart', touchStart); |
| 1080 | i.event.bind(element, 'touchmove', touchMove); |
| 1081 | i.event.bind(element, 'touchend', touchEnd); |
| 1082 | } else if (env.supportsIePointer) { |
| 1083 | if (window.PointerEvent) { |
| 1084 | i.event.bind(element, 'pointerdown', touchStart); |
| 1085 | i.event.bind(element, 'pointermove', touchMove); |
| 1086 | i.event.bind(element, 'pointerup', touchEnd); |
| 1087 | } else if (window.MSPointerEvent) { |
| 1088 | i.event.bind(element, 'MSPointerDown', touchStart); |
| 1089 | i.event.bind(element, 'MSPointerMove', touchMove); |
| 1090 | i.event.bind(element, 'MSPointerUp', touchEnd); |
| 1091 | } |
| 1092 | } |
| 1093 | }; |
| 1094 | |
| 1095 | var defaultSettings = function () { return ({ |
| 1096 | handlers: ['click-rail', 'drag-thumb', 'keyboard', 'wheel', 'touch'], |
| 1097 | maxScrollbarLength: null, |
| 1098 | minScrollbarLength: null, |
| 1099 | scrollingThreshold: 1000, |
| 1100 | scrollXMarginOffset: 0, |
| 1101 | scrollYMarginOffset: 0, |
| 1102 | suppressScrollX: false, |
| 1103 | suppressScrollY: false, |
| 1104 | swipeEasing: true, |
| 1105 | useBothWheelAxes: false, |
| 1106 | wheelPropagation: true, |
| 1107 | wheelSpeed: 1, |
| 1108 | }); }; |
| 1109 | |
| 1110 | var handlers = { |
| 1111 | 'click-rail': clickRail, |
| 1112 | 'drag-thumb': dragThumb, |
| 1113 | keyboard: keyboard, |
| 1114 | wheel: wheel, |
| 1115 | touch: touch, |
| 1116 | }; |
| 1117 | |
| 1118 | var PerfectScrollbar = function PerfectScrollbar(element, userSettings) { |
| 1119 | var this$1 = this; |
| 1120 | if ( userSettings === void 0 ) userSettings = {}; |
| 1121 | |
| 1122 | if (typeof element === 'string') { |
| 1123 | element = document.querySelector(element); |
| 1124 | } |
| 1125 | |
| 1126 | if (!element || !element.nodeName) { |
| 1127 | throw new Error('no element is specified to initialize PerfectScrollbar'); |
| 1128 | } |
| 1129 | |
| 1130 | this.element = element; |
| 1131 | |
| 1132 | element.classList.add(cls.main); |
| 1133 | |
| 1134 | this.settings = defaultSettings(); |
| 1135 | for (var key in userSettings) { |
| 1136 | this$1.settings[key] = userSettings[key]; |
| 1137 | } |
| 1138 | |
| 1139 | this.containerWidth = null; |
| 1140 | this.containerHeight = null; |
| 1141 | this.contentWidth = null; |
| 1142 | this.contentHeight = null; |
| 1143 | |
| 1144 | var focus = function () { return element.classList.add(cls.state.focus); }; |
| 1145 | var blur = function () { return element.classList.remove(cls.state.focus); }; |
| 1146 | |
| 1147 | this.isRtl = get(element).direction === 'rtl'; |
| 1148 | this.isNegativeScroll = (function () { |
| 1149 | var originalScrollLeft = element.scrollLeft; |
| 1150 | var result = null; |
| 1151 | element.scrollLeft = -1; |
| 1152 | result = element.scrollLeft < 0; |
| 1153 | element.scrollLeft = originalScrollLeft; |
| 1154 | return result; |
| 1155 | })(); |
| 1156 | this.negativeScrollAdjustment = this.isNegativeScroll |
| 1157 | ? element.scrollWidth - element.clientWidth |
| 1158 | : 0; |
| 1159 | this.event = new EventManager(); |
| 1160 | this.ownerDocument = element.ownerDocument || document; |
| 1161 | |
| 1162 | this.scrollbarXRail = div(cls.element.rail('x')); |
| 1163 | element.appendChild(this.scrollbarXRail); |
| 1164 | this.scrollbarX = div(cls.element.thumb('x')); |
| 1165 | this.scrollbarXRail.appendChild(this.scrollbarX); |
| 1166 | this.scrollbarX.setAttribute('tabindex', 0); |
| 1167 | this.event.bind(this.scrollbarX, 'focus', focus); |
| 1168 | this.event.bind(this.scrollbarX, 'blur', blur); |
| 1169 | this.scrollbarXActive = null; |
| 1170 | this.scrollbarXWidth = null; |
| 1171 | this.scrollbarXLeft = null; |
| 1172 | var railXStyle = get(this.scrollbarXRail); |
| 1173 | this.scrollbarXBottom = parseInt(railXStyle.bottom, 10); |
| 1174 | if (isNaN(this.scrollbarXBottom)) { |
| 1175 | this.isScrollbarXUsingBottom = false; |
| 1176 | this.scrollbarXTop = toInt(railXStyle.top); |
| 1177 | } else { |
| 1178 | this.isScrollbarXUsingBottom = true; |
| 1179 | } |
| 1180 | this.railBorderXWidth = |
| 1181 | toInt(railXStyle.borderLeftWidth) + toInt(railXStyle.borderRightWidth); |
| 1182 | // Set rail to display:block to calculate margins |
| 1183 | set(this.scrollbarXRail, { display: 'block' }); |
| 1184 | this.railXMarginWidth = |
| 1185 | toInt(railXStyle.marginLeft) + toInt(railXStyle.marginRight); |
| 1186 | set(this.scrollbarXRail, { display: '' }); |
| 1187 | this.railXWidth = null; |
| 1188 | this.railXRatio = null; |
| 1189 | |
| 1190 | this.scrollbarYRail = div(cls.element.rail('y')); |
| 1191 | element.appendChild(this.scrollbarYRail); |
| 1192 | this.scrollbarY = div(cls.element.thumb('y')); |
| 1193 | this.scrollbarYRail.appendChild(this.scrollbarY); |
| 1194 | this.scrollbarY.setAttribute('tabindex', 0); |
| 1195 | this.event.bind(this.scrollbarY, 'focus', focus); |
| 1196 | this.event.bind(this.scrollbarY, 'blur', blur); |
| 1197 | this.scrollbarYActive = null; |
| 1198 | this.scrollbarYHeight = null; |
| 1199 | this.scrollbarYTop = null; |
| 1200 | var railYStyle = get(this.scrollbarYRail); |
| 1201 | this.scrollbarYRight = parseInt(railYStyle.right, 10); |
| 1202 | if (isNaN(this.scrollbarYRight)) { |
| 1203 | this.isScrollbarYUsingRight = false; |
| 1204 | this.scrollbarYLeft = toInt(railYStyle.left); |
| 1205 | } else { |
| 1206 | this.isScrollbarYUsingRight = true; |
| 1207 | } |
| 1208 | this.scrollbarYOuterWidth = this.isRtl ? outerWidth(this.scrollbarY) : null; |
| 1209 | this.railBorderYWidth = |
| 1210 | toInt(railYStyle.borderTopWidth) + toInt(railYStyle.borderBottomWidth); |
| 1211 | set(this.scrollbarYRail, { display: 'block' }); |
| 1212 | this.railYMarginHeight = |
| 1213 | toInt(railYStyle.marginTop) + toInt(railYStyle.marginBottom); |
| 1214 | set(this.scrollbarYRail, { display: '' }); |
| 1215 | this.railYHeight = null; |
| 1216 | this.railYRatio = null; |
| 1217 | |
| 1218 | this.reach = { |
| 1219 | x: |
| 1220 | element.scrollLeft <= 0 |
| 1221 | ? 'start' |
| 1222 | : element.scrollLeft >= this.contentWidth - this.containerWidth |
| 1223 | ? 'end' |
| 1224 | : null, |
| 1225 | y: |
| 1226 | element.scrollTop <= 0 |
| 1227 | ? 'start' |
| 1228 | : element.scrollTop >= this.contentHeight - this.containerHeight |
| 1229 | ? 'end' |
| 1230 | : null, |
| 1231 | }; |
| 1232 | |
| 1233 | this.isAlive = true; |
| 1234 | |
| 1235 | this.settings.handlers.forEach(function (handlerName) { return handlers[handlerName](this$1); }); |
| 1236 | |
| 1237 | this.lastScrollTop = Math.floor(element.scrollTop); // for onScroll only |
| 1238 | this.lastScrollLeft = element.scrollLeft; // for onScroll only |
| 1239 | this.event.bind(this.element, 'scroll', function (e) { return this$1.onScroll(e); }); |
| 1240 | updateGeometry(this); |
| 1241 | }; |
| 1242 | |
| 1243 | PerfectScrollbar.prototype.update = function update () { |
| 1244 | if (!this.isAlive) { |
| 1245 | return; |
| 1246 | } |
| 1247 | |
| 1248 | // Recalcuate negative scrollLeft adjustment |
| 1249 | this.negativeScrollAdjustment = this.isNegativeScroll |
| 1250 | ? this.element.scrollWidth - this.element.clientWidth |
| 1251 | : 0; |
| 1252 | |
| 1253 | // Recalculate rail margins |
| 1254 | set(this.scrollbarXRail, { display: 'block' }); |
| 1255 | set(this.scrollbarYRail, { display: 'block' }); |
| 1256 | this.railXMarginWidth = |
| 1257 | toInt(get(this.scrollbarXRail).marginLeft) + |
| 1258 | toInt(get(this.scrollbarXRail).marginRight); |
| 1259 | this.railYMarginHeight = |
| 1260 | toInt(get(this.scrollbarYRail).marginTop) + |
| 1261 | toInt(get(this.scrollbarYRail).marginBottom); |
| 1262 | |
| 1263 | // Hide scrollbars not to affect scrollWidth and scrollHeight |
| 1264 | set(this.scrollbarXRail, { display: 'none' }); |
| 1265 | set(this.scrollbarYRail, { display: 'none' }); |
| 1266 | |
| 1267 | updateGeometry(this); |
| 1268 | |
| 1269 | processScrollDiff(this, 'top', 0, false, true); |
| 1270 | processScrollDiff(this, 'left', 0, false, true); |
| 1271 | |
| 1272 | set(this.scrollbarXRail, { display: '' }); |
| 1273 | set(this.scrollbarYRail, { display: '' }); |
| 1274 | }; |
| 1275 | |
| 1276 | PerfectScrollbar.prototype.onScroll = function onScroll (e) { |
| 1277 | if (!this.isAlive) { |
| 1278 | return; |
| 1279 | } |
| 1280 | |
| 1281 | updateGeometry(this); |
| 1282 | processScrollDiff(this, 'top', this.element.scrollTop - this.lastScrollTop); |
| 1283 | processScrollDiff( |
| 1284 | this, |
| 1285 | 'left', |
| 1286 | this.element.scrollLeft - this.lastScrollLeft |
| 1287 | ); |
| 1288 | |
| 1289 | this.lastScrollTop = Math.floor(this.element.scrollTop); |
| 1290 | this.lastScrollLeft = this.element.scrollLeft; |
| 1291 | }; |
| 1292 | |
| 1293 | PerfectScrollbar.prototype.destroy = function destroy () { |
| 1294 | if (!this.isAlive) { |
| 1295 | return; |
| 1296 | } |
| 1297 | |
| 1298 | this.event.unbindAll(); |
| 1299 | remove(this.scrollbarX); |
| 1300 | remove(this.scrollbarY); |
| 1301 | remove(this.scrollbarXRail); |
| 1302 | remove(this.scrollbarYRail); |
| 1303 | this.removePsClasses(); |
| 1304 | |
| 1305 | // unset elements |
| 1306 | this.element = null; |
| 1307 | this.scrollbarX = null; |
| 1308 | this.scrollbarY = null; |
| 1309 | this.scrollbarXRail = null; |
| 1310 | this.scrollbarYRail = null; |
| 1311 | |
| 1312 | this.isAlive = false; |
| 1313 | }; |
| 1314 | |
| 1315 | PerfectScrollbar.prototype.removePsClasses = function removePsClasses () { |
| 1316 | this.element.className = this.element.className |
| 1317 | .split(' ') |
| 1318 | .filter(function (name) { return !name.match(/^ps([-_].+|)$/); }) |
| 1319 | .join(' '); |
| 1320 | }; |
| 1321 | |
| 1322 | return PerfectScrollbar; |
| 1323 | |
| 1324 | }))); |
| 1325 |