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(function() { |
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"use strict"; |
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|
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CodeMirror.showHint = function(cm, getHints, options) { |
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// We want a single cursor position. |
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if (cm.somethingSelected()) return; |
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if (getHints == null) getHints = cm.getHelper(cm.getCursor(), "hint"); |
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if (getHints == null) return; |
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|
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if (cm.state.completionActive) cm.state.completionActive.close(); |
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|
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var completion = cm.state.completionActive = new Completion(cm, getHints, options || {}); |
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CodeMirror.signal(cm, "startCompletion", cm); |
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if (completion.options.async) |
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getHints(cm, function(hints) { completion.showHints(hints); }, completion.options); |
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else |
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return completion.showHints(getHints(cm, completion.options)); |
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}; |
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|
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function Completion(cm, getHints, options) { |
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this.cm = cm; |
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this.getHints = getHints; |
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this.options = options; |
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this.widget = this.onClose = null; |
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} |
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|
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Completion.prototype = { |
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close: function() { |
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if (!this.active()) return; |
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this.cm.state.completionActive = null; |
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|
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if (this.widget) this.widget.close(); |
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if (this.onClose) this.onClose(); |
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CodeMirror.signal(this.cm, "endCompletion", this.cm); |
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}, |
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|
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active: function() { |
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return this.cm.state.completionActive == this; |
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}, |
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|
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pick: function(data, i) { |
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var completion = data.list[i]; |
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if (completion.hint) completion.hint(this.cm, data, completion); |
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else this.cm.replaceRange(getText(completion), data.from, data.to); |
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this.close(); |
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}, |
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|
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showHints: function(data) { |
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if (!data || !data.list.length || !this.active()) return this.close(); |
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|
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if (this.options.completeSingle != false && data.list.length == 1) |
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this.pick(data, 0); |
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else |
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this.showWidget(data); |
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}, |
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|
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showWidget: function(data) { |
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this.widget = new Widget(this, data); |
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CodeMirror.signal(data, "shown"); |
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|
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var debounce = null, completion = this, finished; |
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var closeOn = this.options.closeCharacters || /[\s()\[\]{};:>,]/; |
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var startPos = this.cm.getCursor(), startLen = this.cm.getLine(startPos.line).length; |
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|
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function done() { |
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if (finished) return; |
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finished = true; |
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completion.close(); |
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completion.cm.off("cursorActivity", activity); |
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if (data) CodeMirror.signal(data, "close"); |
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} |
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|
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function update() { |
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if (finished) return; |
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CodeMirror.signal(data, "update"); |
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if (completion.options.async) |
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completion.getHints(completion.cm, finishUpdate, completion.options); |
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else |
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finishUpdate(completion.getHints(completion.cm, completion.options)); |
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} |
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function finishUpdate(data_) { |
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data = data_; |
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if (finished) return; |
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if (!data || !data.list.length) return done(); |
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completion.widget = new Widget(completion, data); |
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} |
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|
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function activity() { |
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clearTimeout(debounce); |
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var pos = completion.cm.getCursor(), line = completion.cm.getLine(pos.line); |
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if (pos.line != startPos.line || line.length - pos.ch != startLen - startPos.ch || |
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pos.ch < startPos.ch || completion.cm.somethingSelected() || |
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(pos.ch && closeOn.test(line.charAt(pos.ch - 1)))) { |
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completion.close(); |
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} else { |
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debounce = setTimeout(update, 170); |
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if (completion.widget) completion.widget.close(); |
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} |
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} |
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this.cm.on("cursorActivity", activity); |
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this.onClose = done; |
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} |
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}; |
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|
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function getText(completion) { |
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if (typeof completion == "string") return completion; |
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else return completion.text; |
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} |
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|
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function buildKeyMap(options, handle) { |
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var baseMap = { |
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Up: function() {handle.moveFocus(-1);}, |
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Down: function() {handle.moveFocus(1);}, |
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PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);}, |
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PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);}, |
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Home: function() {handle.setFocus(0);}, |
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End: function() {handle.setFocus(handle.length - 1);}, |
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Enter: handle.pick, |
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Tab: handle.pick, |
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Esc: handle.close |
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}; |
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var ourMap = options.customKeys ? {} : baseMap; |
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function addBinding(key, val) { |
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var bound; |
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if (typeof val != "string") |
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bound = function(cm) { return val(cm, handle); }; |
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// This mechanism is deprecated |
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else if (baseMap.hasOwnProperty(val)) |
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bound = baseMap[val]; |
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else |
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bound = val; |
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ourMap[key] = bound; |
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} |
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if (options.customKeys) |
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for (var key in options.customKeys) if (options.customKeys.hasOwnProperty(key)) |
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addBinding(key, options.customKeys[key]); |
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if (options.extraKeys) |
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for (var key in options.extraKeys) if (options.extraKeys.hasOwnProperty(key)) |
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addBinding(key, options.extraKeys[key]); |
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return ourMap; |
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} |
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|
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function Widget(completion, data) { |
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this.completion = completion; |
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this.data = data; |
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var widget = this, cm = completion.cm, options = completion.options; |
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|
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var hints = this.hints = document.createElement("ul"); |
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hints.className = "CodeMirror-hints"; |
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this.selectedHint = 0; |
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|
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var completions = data.list; |
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for (var i = 0; i < completions.length; ++i) { |
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var elt = hints.appendChild(document.createElement("li")), cur = completions[i]; |
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var className = "CodeMirror-hint" + (i ? "" : " CodeMirror-hint-active"); |
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if (cur.className != null) className = cur.className + " " + className; |
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elt.className = className; |
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if (cur.render) cur.render(elt, data, cur); |
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else elt.appendChild(document.createTextNode(cur.displayText || getText(cur))); |
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elt.hintId = i; |
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} |
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|
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var pos = cm.cursorCoords(options.alignWithWord !== false ? data.from : null); |
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var left = pos.left, top = pos.bottom, below = true; |
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hints.style.left = left + "px"; |
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hints.style.top = top + "px"; |
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// If we're at the edge of the screen, then we want the menu to appear on the left of the cursor. |
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var winW = window.innerWidth || Math.max(document.body.offsetWidth, document.documentElement.offsetWidth); |
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var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight); |
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(options.container || document.body).appendChild(hints); |
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var box = hints.getBoundingClientRect(); |
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var overlapX = box.right - winW, overlapY = box.bottom - winH; |
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if (overlapX > 0) { |
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if (box.right - box.left > winW) { |
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hints.style.width = (winW - 5) + "px"; |
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overlapX -= (box.right - box.left) - winW; |
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} |
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hints.style.left = (left = pos.left - overlapX) + "px"; |
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} |
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if (overlapY > 0) { |
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var height = box.bottom - box.top; |
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if (box.top - (pos.bottom - pos.top) - height > 0) { |
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overlapY = height + (pos.bottom - pos.top); |
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below = false; |
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} else if (height > winH) { |
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hints.style.height = (winH - 5) + "px"; |
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overlapY -= height - winH; |
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} |
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hints.style.top = (top = pos.bottom - overlapY) + "px"; |
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} |
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|
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cm.addKeyMap(this.keyMap = buildKeyMap(options, { |
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moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); }, |
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setFocus: function(n) { widget.changeActive(n); }, |
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menuSize: function() { return widget.screenAmount(); }, |
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length: completions.length, |
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close: function() { completion.close(); }, |
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pick: function() { widget.pick(); } |
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})); |
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|
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if (options.closeOnUnfocus !== false) { |
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var closingOnBlur; |
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cm.on("blur", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); }); |
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cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); }); |
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} |
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|
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var startScroll = cm.getScrollInfo(); |
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cm.on("scroll", this.onScroll = function() { |
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var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect(); |
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var newTop = top + startScroll.top - curScroll.top; |
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var point = newTop - (window.pageYOffset || (document.documentElement || document.body).scrollTop); |
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if (!below) point += hints.offsetHeight; |
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if (point <= editor.top || point >= editor.bottom) return completion.close(); |
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hints.style.top = newTop + "px"; |
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hints.style.left = (left + startScroll.left - curScroll.left) + "px"; |
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}); |
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|
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CodeMirror.on(hints, "dblclick", function(e) { |
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var t = e.target || e.srcElement; |
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if (t.hintId != null) {widget.changeActive(t.hintId); widget.pick();} |
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}); |
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CodeMirror.on(hints, "click", function(e) { |
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var t = e.target || e.srcElement; |
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if (t.hintId != null) widget.changeActive(t.hintId); |
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}); |
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CodeMirror.on(hints, "mousedown", function() { |
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setTimeout(function(){cm.focus();}, 20); |
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}); |
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|
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CodeMirror.signal(data, "select", completions[0], hints.firstChild); |
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return true; |
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} |
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|
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Widget.prototype = { |
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close: function() { |
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if (this.completion.widget != this) return; |
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this.completion.widget = null; |
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this.hints.parentNode.removeChild(this.hints); |
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this.completion.cm.removeKeyMap(this.keyMap); |
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|
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var cm = this.completion.cm; |
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if (this.completion.options.closeOnUnfocus !== false) { |
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cm.off("blur", this.onBlur); |
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cm.off("focus", this.onFocus); |
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} |
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cm.off("scroll", this.onScroll); |
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}, |
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|
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pick: function() { |
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this.completion.pick(this.data, this.selectedHint); |
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}, |
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|
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changeActive: function(i, avoidWrap) { |
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if (i >= this.data.list.length) |
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i = avoidWrap ? this.data.list.length - 1 : 0; |
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else if (i < 0) |
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i = avoidWrap ? 0 : this.data.list.length - 1; |
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if (this.selectedHint == i) return; |
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var node = this.hints.childNodes[this.selectedHint]; |
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node.className = node.className.replace(" CodeMirror-hint-active", ""); |
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node = this.hints.childNodes[this.selectedHint = i]; |
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node.className += " CodeMirror-hint-active"; |
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if (node.offsetTop < this.hints.scrollTop) |
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this.hints.scrollTop = node.offsetTop - 3; |
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else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight) |
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this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3; |
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CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node); |
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}, |
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|
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screenAmount: function() { |
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return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1; |
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} |
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}; |
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})(); |
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|
