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// CodeMirror, copyright (c) by Marijn Haverbeke and others |
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// Distributed under an MIT license: https://codemirror.net/LICENSE |
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|
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(function(mod) { |
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if (typeof exports == "object" && typeof module == "object") // CommonJS |
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mod(require("../../lib/codemirror")); |
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else if (typeof define == "function" && define.amd) // AMD |
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define(["../../lib/codemirror"], mod); |
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else // Plain browser env |
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mod(CodeMirror); |
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})(function(CodeMirror) { |
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"use strict"; |
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|
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var HINT_ELEMENT_CLASS = "CodeMirror-hint"; |
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var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active"; |
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|
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// This is the old interface, kept around for now to stay |
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// backwards-compatible. |
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CodeMirror.showHint = function(cm, getHints, options) { |
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if (!getHints) return cm.showHint(options); |
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if (options && options.async) getHints.async = true; |
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var newOpts = {hint: getHints}; |
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if (options) for (var prop in options) newOpts[prop] = options[prop]; |
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return cm.showHint(newOpts); |
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}; |
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|
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CodeMirror.defineExtension("showHint", function(options) { |
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options = parseOptions(this, this.getCursor("start"), options); |
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var selections = this.listSelections() |
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if (selections.length > 1) return; |
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// By default, don't allow completion when something is selected. |
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// A hint function can have a `supportsSelection` property to |
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// indicate that it can handle selections. |
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if (this.somethingSelected()) { |
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if (!options.hint.supportsSelection) return; |
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// Don't try with cross-line selections |
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for (var i = 0; i < selections.length; i++) |
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if (selections[i].head.line != selections[i].anchor.line) return; |
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} |
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|
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if (this.state.completionActive) this.state.completionActive.close(); |
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var completion = this.state.completionActive = new Completion(this, options); |
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if (!completion.options.hint) return; |
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|
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CodeMirror.signal(this, "startCompletion", this); |
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completion.update(true); |
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}); |
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|
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CodeMirror.defineExtension("closeHint", function() { |
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if (this.state.completionActive) this.state.completionActive.close() |
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}) |
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|
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function Completion(cm, options) { |
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this.cm = cm; |
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this.options = options; |
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this.widget = null; |
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this.debounce = 0; |
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this.tick = 0; |
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this.startPos = this.cm.getCursor("start"); |
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this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length; |
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|
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var self = this; |
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cm.on("cursorActivity", this.activityFunc = function() { self.cursorActivity(); }); |
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} |
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|
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var requestAnimationFrame = window.requestAnimationFrame || function(fn) { |
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return setTimeout(fn, 1000/60); |
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}; |
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var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout; |
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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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this.tick = null; |
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this.cm.off("cursorActivity", this.activityFunc); |
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|
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if (this.widget && this.data) CodeMirror.signal(this.data, "close"); |
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if (this.widget) this.widget.close(); |
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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], self = this; |
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this.cm.operation(function() { |
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if (completion.hint) |
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completion.hint(self.cm, data, completion); |
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else |
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self.cm.replaceRange(getText(completion), completion.from || data.from, |
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completion.to || data.to, "complete"); |
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CodeMirror.signal(data, "pick", completion); |
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self.cm.scrollIntoView(); |
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}) |
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this.close(); |
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}, |
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|
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cursorActivity: function() { |
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if (this.debounce) { |
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cancelAnimationFrame(this.debounce); |
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this.debounce = 0; |
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} |
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|
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var identStart = this.startPos; |
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if(this.data) { |
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identStart = this.data.from; |
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} |
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|
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var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line); |
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if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch || |
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pos.ch < identStart.ch || this.cm.somethingSelected() || |
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(!pos.ch || this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) { |
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this.close(); |
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} else { |
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var self = this; |
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this.debounce = requestAnimationFrame(function() {self.update();}); |
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if (this.widget) this.widget.disable(); |
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} |
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}, |
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|
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update: function(first) { |
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if (this.tick == null) return |
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var self = this, myTick = ++this.tick |
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fetchHints(this.options.hint, this.cm, this.options, function(data) { |
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if (self.tick == myTick) self.finishUpdate(data, first) |
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}) |
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}, |
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|
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finishUpdate: function(data, first) { |
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if (this.data) CodeMirror.signal(this.data, "update"); |
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|
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var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle); |
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if (this.widget) this.widget.close(); |
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|
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this.data = data; |
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|
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if (data && data.list.length) { |
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if (picked && data.list.length == 1) { |
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this.pick(data, 0); |
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} else { |
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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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} |
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} |
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}; |
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|
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function parseOptions(cm, pos, options) { |
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var editor = cm.options.hintOptions; |
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var out = {}; |
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for (var prop in defaultOptions) out[prop] = defaultOptions[prop]; |
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if (editor) for (var prop in editor) |
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if (editor[prop] !== undefined) out[prop] = editor[prop]; |
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if (options) for (var prop in options) |
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if (options[prop] !== undefined) out[prop] = options[prop]; |
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if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos) |
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return out; |
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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(completion, 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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|
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var mac = /Mac/.test(navigator.platform); |
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|
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if (mac) { |
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baseMap["Ctrl-P"] = function() {handle.moveFocus(-1);}; |
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baseMap["Ctrl-N"] = function() {handle.moveFocus(1);}; |
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} |
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|
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var custom = completion.options.customKeys; |
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var ourMap = custom ? {} : 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 (custom) |
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for (var key in custom) if (custom.hasOwnProperty(key)) |
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addBinding(key, custom[key]); |
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var extra = completion.options.extraKeys; |
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if (extra) |
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for (var key in extra) if (extra.hasOwnProperty(key)) |
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addBinding(key, extra[key]); |
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return ourMap; |
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} |
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|
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function getHintElement(hintsElement, el) { |
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while (el && el != hintsElement) { |
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if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el; |
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el = el.parentNode; |
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} |
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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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this.picked = false; |
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var widget = this, cm = completion.cm; |
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var ownerDocument = cm.getInputField().ownerDocument; |
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var parentWindow = ownerDocument.defaultView || ownerDocument.parentWindow; |
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|
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var hints = this.hints = ownerDocument.createElement("ul"); |
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var theme = completion.cm.options.theme; |
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hints.className = "CodeMirror-hints " + theme; |
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this.selectedHint = data.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(ownerDocument.createElement("li")), cur = completions[i]; |
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var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS); |
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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(ownerDocument.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 container = completion.options.container || ownerDocument.body; |
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var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null); |
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var left = pos.left, top = pos.bottom, below = true; |
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var offsetLeft = 0, offsetTop = 0; |
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if (container !== ownerDocument.body) { |
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// We offset the cursor position because left and top are relative to the offsetParent's top left corner. |
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var isContainerPositioned = ['absolute', 'relative', 'fixed'].indexOf(parentWindow.getComputedStyle(container).position) !== -1; |
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var offsetParent = isContainerPositioned ? container : container.offsetParent; |
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var offsetParentPosition = offsetParent.getBoundingClientRect(); |
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var bodyPosition = ownerDocument.body.getBoundingClientRect(); |
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offsetLeft = (offsetParentPosition.left - bodyPosition.left - offsetParent.scrollLeft); |
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offsetTop = (offsetParentPosition.top - bodyPosition.top - offsetParent.scrollTop); |
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} |
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hints.style.left = (left - offsetLeft) + "px"; |
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hints.style.top = (top - offsetTop) + "px"; |
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|
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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 = parentWindow.innerWidth || Math.max(ownerDocument.body.offsetWidth, ownerDocument.documentElement.offsetWidth); |
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var winH = parentWindow.innerHeight || Math.max(ownerDocument.body.offsetHeight, ownerDocument.documentElement.offsetHeight); |
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container.appendChild(hints); |
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var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH; |
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var scrolls = hints.scrollHeight > hints.clientHeight + 1 |
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var startScroll = cm.getScrollInfo(); |
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|
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if (overlapY > 0) { |
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var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top); |
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if (curTop - height > 0) { // Fits above cursor |
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hints.style.top = (top = pos.top - height - offsetTop) + "px"; |
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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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hints.style.top = (top = pos.bottom - box.top - offsetTop) + "px"; |
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var cursor = cm.getCursor(); |
| 275 |
if (data.from.ch != cursor.ch) { |
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pos = cm.cursorCoords(cursor); |
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hints.style.left = (left = pos.left - offsetLeft) + "px"; |
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box = hints.getBoundingClientRect(); |
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} |
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} |
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} |
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var overlapX = box.right - winW; |
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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 - offsetLeft) + "px"; |
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} |
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if (scrolls) for (var node = hints.firstChild; node; node = node.nextSibling) |
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node.style.paddingRight = cm.display.nativeBarWidth + "px" |
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|
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cm.addKeyMap(this.keyMap = buildKeyMap(completion, { |
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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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data: data |
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})); |
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|
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if (completion.options.closeOnUnfocus) { |
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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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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 - (parentWindow.pageYOffset || (ownerDocument.documentElement || ownerDocument.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 = getHintElement(hints, e.target || e.srcElement); |
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if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();} |
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}); |
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|
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CodeMirror.on(hints, "click", function(e) { |
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var t = getHintElement(hints, e.target || e.srcElement); |
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if (t && t.hintId != null) { |
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widget.changeActive(t.hintId); |
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if (completion.options.completeOnSingleClick) widget.pick(); |
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} |
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}); |
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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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this.scrollToActive() |
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|
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CodeMirror.signal(data, "select", completions[this.selectedHint], hints.childNodes[this.selectedHint]); |
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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() { |
| 343 |
if (this.completion.widget != this) return; |
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this.completion.widget = null; |
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this.hints.parentNode.removeChild(this.hints); |
| 346 |
this.completion.cm.removeKeyMap(this.keyMap); |
| 347 |
|
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var cm = this.completion.cm; |
| 349 |
if (this.completion.options.closeOnUnfocus) { |
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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); |
| 354 |
}, |
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|
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disable: function() { |
| 357 |
this.completion.cm.removeKeyMap(this.keyMap); |
| 358 |
var widget = this; |
| 359 |
this.keyMap = {Enter: function() { widget.picked = true; }}; |
| 360 |
this.completion.cm.addKeyMap(this.keyMap); |
| 361 |
}, |
| 362 |
|
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pick: function() { |
| 364 |
this.completion.pick(this.data, this.selectedHint); |
| 365 |
}, |
| 366 |
|
| 367 |
changeActive: function(i, avoidWrap) { |
| 368 |
if (i >= this.data.list.length) |
| 369 |
i = avoidWrap ? this.data.list.length - 1 : 0; |
| 370 |
else if (i < 0) |
| 371 |
i = avoidWrap ? 0 : this.data.list.length - 1; |
| 372 |
if (this.selectedHint == i) return; |
| 373 |
var node = this.hints.childNodes[this.selectedHint]; |
| 374 |
if (node) node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, ""); |
| 375 |
node = this.hints.childNodes[this.selectedHint = i]; |
| 376 |
node.className += " " + ACTIVE_HINT_ELEMENT_CLASS; |
| 377 |
this.scrollToActive() |
| 378 |
CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node); |
| 379 |
}, |
| 380 |
|
| 381 |
scrollToActive: function() { |
| 382 |
var margin = this.completion.options.scrollMargin || 0; |
| 383 |
var node1 = this.hints.childNodes[Math.max(0, this.selectedHint - margin)]; |
| 384 |
var node2 = this.hints.childNodes[Math.min(this.data.list.length - 1, this.selectedHint + margin)]; |
| 385 |
var firstNode = this.hints.firstChild; |
| 386 |
if (node1.offsetTop < this.hints.scrollTop) |
| 387 |
this.hints.scrollTop = node1.offsetTop - firstNode.offsetTop; |
| 388 |
else if (node2.offsetTop + node2.offsetHeight > this.hints.scrollTop + this.hints.clientHeight) |
| 389 |
this.hints.scrollTop = node2.offsetTop + node2.offsetHeight - this.hints.clientHeight + firstNode.offsetTop; |
| 390 |
}, |
| 391 |
|
| 392 |
screenAmount: function() { |
| 393 |
return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1; |
| 394 |
} |
| 395 |
}; |
| 396 |
|
| 397 |
function applicableHelpers(cm, helpers) { |
| 398 |
if (!cm.somethingSelected()) return helpers |
| 399 |
var result = [] |
| 400 |
for (var i = 0; i < helpers.length; i++) |
| 401 |
if (helpers[i].supportsSelection) result.push(helpers[i]) |
| 402 |
return result |
| 403 |
} |
| 404 |
|
| 405 |
function fetchHints(hint, cm, options, callback) { |
| 406 |
if (hint.async) { |
| 407 |
hint(cm, callback, options) |
| 408 |
} else { |
| 409 |
var result = hint(cm, options) |
| 410 |
if (result && result.then) result.then(callback) |
| 411 |
else callback(result) |
| 412 |
} |
| 413 |
} |
| 414 |
|
| 415 |
function resolveAutoHints(cm, pos) { |
| 416 |
var helpers = cm.getHelpers(pos, "hint"), words |
| 417 |
if (helpers.length) { |
| 418 |
var resolved = function(cm, callback, options) { |
| 419 |
var app = applicableHelpers(cm, helpers); |
| 420 |
function run(i) { |
| 421 |
if (i == app.length) return callback(null) |
| 422 |
fetchHints(app[i], cm, options, function(result) { |
| 423 |
if (result && result.list.length > 0) callback(result) |
| 424 |
else run(i + 1) |
| 425 |
}) |
| 426 |
} |
| 427 |
run(0) |
| 428 |
} |
| 429 |
resolved.async = true |
| 430 |
resolved.supportsSelection = true |
| 431 |
return resolved |
| 432 |
} else if (words = cm.getHelper(cm.getCursor(), "hintWords")) { |
| 433 |
return function(cm) { return CodeMirror.hint.fromList(cm, {words: words}) } |
| 434 |
} else if (CodeMirror.hint.anyword) { |
| 435 |
return function(cm, options) { return CodeMirror.hint.anyword(cm, options) } |
| 436 |
} else { |
| 437 |
return function() {} |
| 438 |
} |
| 439 |
} |
| 440 |
|
| 441 |
CodeMirror.registerHelper("hint", "auto", { |
| 442 |
resolve: resolveAutoHints |
| 443 |
}); |
| 444 |
|
| 445 |
CodeMirror.registerHelper("hint", "fromList", function(cm, options) { |
| 446 |
var cur = cm.getCursor(), token = cm.getTokenAt(cur) |
| 447 |
var term, from = CodeMirror.Pos(cur.line, token.start), to = cur |
| 448 |
if (token.start < cur.ch && /\w/.test(token.string.charAt(cur.ch - token.start - 1))) { |
| 449 |
term = token.string.substr(0, cur.ch - token.start) |
| 450 |
} else { |
| 451 |
term = "" |
| 452 |
from = cur |
| 453 |
} |
| 454 |
var found = []; |
| 455 |
for (var i = 0; i < options.words.length; i++) { |
| 456 |
var word = options.words[i]; |
| 457 |
if (word.slice(0, term.length) == term) |
| 458 |
found.push(word); |
| 459 |
} |
| 460 |
|
| 461 |
if (found.length) return {list: found, from: from, to: to}; |
| 462 |
}); |
| 463 |
|
| 464 |
CodeMirror.commands.autocomplete = CodeMirror.showHint; |
| 465 |
|
| 466 |
var defaultOptions = { |
| 467 |
hint: CodeMirror.hint.auto, |
| 468 |
completeSingle: true, |
| 469 |
alignWithWord: true, |
| 470 |
closeCharacters: /[\s()\[\]{};:>,]/, |
| 471 |
closeOnUnfocus: true, |
| 472 |
completeOnSingleClick: true, |
| 473 |
container: null, |
| 474 |
customKeys: null, |
| 475 |
extraKeys: null |
| 476 |
}; |
| 477 |
|
| 478 |
CodeMirror.defineOption("hintOptions", null); |
| 479 |
}); |