miguelfreitas
10 years ago
12 changed files with 158 additions and 725 deletions
@ -1,554 +0,0 @@
@@ -1,554 +0,0 @@
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/*! |
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* jQuery.textcomplete.js |
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* |
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* Repositiory: https://github.com/yuku-t/jquery-textcomplete
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* License: MIT |
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* Author: Yuku Takahashi |
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*/ |
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;(function ($) { |
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'use strict'; |
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/** |
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* Exclusive execution control utility. |
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*/ |
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var lock = function (func) { |
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var free, locked; |
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free = function () { locked = false; }; |
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return function () { |
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var args; |
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if (locked) return; |
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locked = true; |
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args = toArray(arguments); |
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args.unshift(free); |
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func.apply(this, args); |
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}; |
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}; |
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/** |
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* Convert arguments into a real array. |
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*/ |
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var toArray = function (args) { |
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var result; |
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result = Array.prototype.slice.call(args); |
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return result; |
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}; |
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/** |
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* Get the styles of any element from property names. |
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*/ |
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var getStyles = (function () { |
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var color; |
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color = $('<div></div>').css(['color']).color; |
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if (typeof color !== 'undefined') { |
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return function ($el, properties) { |
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return $el.css(properties); |
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}; |
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} else { // for jQuery 1.8 or below
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return function ($el, properties) { |
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var styles; |
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styles = {}; |
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$.each(properties, function (i, property) { |
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styles[property] = $el.css(property); |
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}); |
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return styles; |
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}; |
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} |
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})(); |
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/** |
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* Default template function. |
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*/ |
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var identity = function (obj) { return obj; }; |
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/** |
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* Memoize a search function. |
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*/ |
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var memoize = function (func) { |
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var memo = {}; |
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return function (term, callback) { |
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if (memo[term]) { |
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callback(memo[term]); |
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} else { |
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func.call(this, term, function (data) { |
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memo[term] = (memo[term] || []).concat(data); |
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callback.apply(null, arguments); |
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}); |
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} |
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}; |
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}; |
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/** |
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* Determine if the array contains a given value. |
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*/ |
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var include = function (array, value) { |
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var i, l; |
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if (array.indexOf) return array.indexOf(value) != -1; |
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for (i = 0, l = array.length; i < l; i++) { |
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if (array[i] === value) return true; |
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} |
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return false; |
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}; |
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/** |
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* Textarea manager class. |
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*/ |
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var Completer = (function () { |
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var html, css, $baseWrapper, $baseList, _id; |
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html = { |
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wrapper: '<div class="textcomplete-wrapper"></div>', |
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list: '<ul class="dropdown-menu"></ul>' |
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}; |
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css = { |
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wrapper: { |
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position: 'relative' |
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}, |
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list: { |
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position: 'absolute', |
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top: 0, |
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left: 0, |
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zIndex: '100', |
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display: 'none' |
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} |
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}; |
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$baseWrapper = $(html.wrapper).css(css.wrapper); |
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$baseList = $(html.list).css(css.list); |
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_id = 0; |
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function Completer($el) { |
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var focus; |
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this.el = $el.get(0); // textarea element
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focus = this.el === document.activeElement; |
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// Cannot wrap $el at initialize method lazily due to Firefox's behavior.
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this.$el = wrapElement($el); // Focus is lost
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this.id = 'textComplete' + _id++; |
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this.strategies = []; |
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if (focus) { |
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this.initialize(); |
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this.$el.focus(); |
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} else { |
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this.$el.one('focus.textComplete', $.proxy(this.initialize, this)); |
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} |
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} |
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/** |
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* Completer's public methods |
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*/ |
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$.extend(Completer.prototype, { |
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/** |
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* Prepare ListView and bind events. |
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*/ |
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initialize: function () { |
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var $list, globalEvents; |
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$list = $baseList.clone(); |
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this.listView = new ListView($list, this); |
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this.$el |
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.before($list) |
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.on({ |
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'keyup.textComplete': $.proxy(this.onKeyup, this), |
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'keydown.textComplete': $.proxy(this.listView.onKeydown, |
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this.listView) |
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}); |
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globalEvents = {}; |
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globalEvents['click.' + this.id] = $.proxy(this.onClickDocument, this); |
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globalEvents['keyup.' + this.id] = $.proxy(this.onKeyupDocument, this); |
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$(document).on(globalEvents); |
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}, |
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/** |
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* Register strategies to the completer. |
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*/ |
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register: function (strategies) { |
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this.strategies = this.strategies.concat(strategies); |
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}, |
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/** |
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* Show autocomplete list next to the caret. |
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*/ |
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renderList: function (data) { |
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if (this.clearAtNext) { |
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this.listView.clear(); |
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this.clearAtNext = false; |
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} |
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if (data.length) { |
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if (!this.listView.shown) { |
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this.listView |
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.setPosition(this.getCaretPosition()) |
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.clear() |
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.activate(); |
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this.listView.strategy = this.strategy; |
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} |
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data = data.slice(0, this.strategy.maxCount); |
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this.listView.render(data); |
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} |
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if (!this.listView.data.length && this.listView.shown) { |
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this.listView.deactivate(); |
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} |
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}, |
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searchCallbackFactory: function (free) { |
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var self = this; |
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return function (data, keep) { |
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self.renderList(data); |
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if (!keep) { |
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// This is the last callback for this search.
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free(); |
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self.clearAtNext = true; |
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} |
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}; |
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}, |
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/** |
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* Keyup event handler. |
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*/ |
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onKeyup: function (e) { |
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var searchQuery, term; |
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if (this.skipSearch(e)) { return; } |
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searchQuery = this.extractSearchQuery(this.getTextFromHeadToCaret()); |
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if (searchQuery.length) { |
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term = searchQuery[1]; |
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if (this.term === term) return; // Ignore shift-key or something.
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this.term = term; |
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this.search(searchQuery); |
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} else { |
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this.term = null; |
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this.listView.deactivate(); |
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} |
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}, |
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/** |
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* Suppress searching if it returns true. |
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*/ |
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skipSearch: function (e) { |
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if (this.skipNextKeyup) { |
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this.skipNextKeyup = false; |
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return true; |
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} |
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switch (e.keyCode) { |
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case 40: |
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case 38: |
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return true; |
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} |
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}, |
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onSelect: function (value) { |
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var pre, post, newSubStr; |
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pre = this.getTextFromHeadToCaret(); |
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post = this.el.value.substring(this.el.selectionEnd); |
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newSubStr = this.strategy.replace(value); |
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if ($.isArray(newSubStr)) { |
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post = newSubStr[1] + post; |
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newSubStr = newSubStr[0]; |
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} |
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pre = pre.replace(this.strategy.match, newSubStr); |
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this.$el.val(pre + post) |
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.trigger('change') |
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.trigger('textComplete:select', value); |
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this.el.focus(); |
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this.el.selectionStart = this.el.selectionEnd = pre.length; |
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this.skipNextKeyup = true; |
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}, |
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/** |
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* Global click event handler. |
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*/ |
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onClickDocument: function (e) { |
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if (e.originalEvent && !e.originalEvent.keepTextCompleteDropdown) { |
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this.listView.deactivate(); |
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} |
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}, |
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/** |
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* Global keyup event handler. |
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*/ |
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onKeyupDocument: function (e) { |
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if (this.listView.shown && e.keyCode === 27) { // ESC
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this.listView.deactivate(); |
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this.$el.focus(); |
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} |
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}, |
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/** |
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* Remove all event handlers and the wrapper element. |
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*/ |
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destroy: function () { |
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var $wrapper; |
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this.$el.off('.textComplete'); |
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$(document).off('.' + this.id); |
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if (this.listView) { this.listView.destroy(); } |
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$wrapper = this.$el.parent(); |
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$wrapper.after(this.$el).remove(); |
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this.$el.data('textComplete', void 0); |
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this.$el = null; |
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}, |
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// Helper methods
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// ==============
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/** |
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* Returns caret's relative coordinates from textarea's left top corner. |
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*/ |
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getCaretPosition: function () { |
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// Browser native API does not provide the way to know the position of
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// caret in pixels, so that here we use a kind of hack to accomplish
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// the aim. First of all it puts a div element and completely copies
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// the textarea's style to the element, then it inserts the text and a
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// span element into the textarea.
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// Consequently, the span element's position is the thing what we want.
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if (this.el.selectionEnd === 0) return; |
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var properties, css, $div, $span, position, dir; |
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dir = this.$el.attr('dir') || this.$el.css('direction'); |
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properties = ['border-width', 'font-family', 'font-size', 'font-style', |
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'font-variant', 'font-weight', 'height', 'letter-spacing', |
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'word-spacing', 'line-height', 'text-decoration', 'text-align', |
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'width', 'padding-top', 'padding-right', 'padding-bottom', |
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'padding-left', 'margin-top', 'margin-right', 'margin-bottom', |
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'margin-left' |
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]; |
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css = $.extend({ |
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position: 'absolute', |
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overflow: 'auto', |
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'white-space': 'pre-wrap', |
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top: 0, |
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left: -9999, |
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direction: dir |
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}, getStyles(this.$el, properties)); |
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$div = $('<div></div>').css(css).text(this.getTextFromHeadToCaret()); |
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$span = $('<span></span>').text('.').appendTo($div); |
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this.$el.before($div); |
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position = $span.position(); |
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position.top += $span.height() - this.$el.scrollTop(); |
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if (dir === 'rtl') { position.left -= this.listView.$el.width(); } |
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$div.remove(); |
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return position; |
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}, |
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getTextFromHeadToCaret: function () { |
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var text, selectionEnd, range; |
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selectionEnd = this.el.selectionEnd; |
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if (typeof selectionEnd === 'number') { |
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text = this.el.value.substring(0, selectionEnd); |
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} else if (document.selection) { |
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range = this.el.createTextRange(); |
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range.moveStart('character', 0); |
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range.moveEnd('textedit'); |
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text = range.text; |
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} |
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return text; |
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}, |
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/** |
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* Parse the value of textarea and extract search query. |
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*/ |
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extractSearchQuery: function (text) { |
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// If a search query found, it returns used strategy and the query
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// term. If the caret is currently in a code block or search query does
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// not found, it returns an empty array.
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var i, l, strategy, match; |
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for (i = 0, l = this.strategies.length; i < l; i++) { |
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strategy = this.strategies[i]; |
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match = text.match(strategy.match); |
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if (match) { return [strategy, match[strategy.index]]; } |
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} |
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return []; |
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}, |
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search: lock(function (free, searchQuery) { |
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var term; |
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this.strategy = searchQuery[0]; |
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term = searchQuery[1]; |
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this.strategy.search(term, this.searchCallbackFactory(free)); |
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}) |
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}); |
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/** |
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* Completer's private functions |
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*/ |
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var wrapElement = function ($el) { |
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return $el.wrap($baseWrapper.clone().css('display', $el.css('display'))); |
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}; |
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return Completer; |
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})(); |
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/** |
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* Dropdown menu manager class. |
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*/ |
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var ListView = (function () { |
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function ListView($el, completer) { |
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this.data = []; |
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this.$el = $el; |
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this.index = 0; |
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this.completer = completer; |
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this.$el.on('click.textComplete', 'li.textcomplete-item', |
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$.proxy(this.onClick, this)); |
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} |
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$.extend(ListView.prototype, { |
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shown: false, |
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render: function (data) { |
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var html, i, l, index, val; |
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html = ''; |
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for (i = 0, l = data.length; i < l; i++) { |
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val = data[i]; |
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if (include(this.data, val)) continue; |
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index = this.data.length; |
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this.data.push(val); |
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html += '<li class="textcomplete-item" data-index="' + index + '"><a>'; |
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html += this.strategy.template(val); |
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html += '</a></li>'; |
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if (this.data.length === this.strategy.maxCount) break; |
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} |
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this.$el.append(html); |
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if (!this.data.length) { |
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this.deactivate(); |
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} else { |
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this.activateIndexedItem(); |
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} |
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}, |
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clear: function () { |
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this.data = []; |
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this.$el.html(''); |
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this.index = 0; |
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return this; |
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}, |
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activateIndexedItem: function () { |
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this.$el.find('.active').removeClass('active'); |
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this.getActiveItem().addClass('active'); |
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}, |
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getActiveItem: function () { |
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return $(this.$el.children().get(this.index)); |
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}, |
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activate: function () { |
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if (!this.shown) { |
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this.$el.show(); |
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this.completer.$el.trigger('textComplete:show'); |
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this.shown = true; |
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} |
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return this; |
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}, |
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deactivate: function () { |
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if (this.shown) { |
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this.$el.hide(); |
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this.completer.$el.trigger('textComplete:hide'); |
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this.shown = false; |
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this.data = this.index = null; |
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} |
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return this; |
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}, |
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setPosition: function (position) { |
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this.$el.css(position); |
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return this; |
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}, |
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select: function (index) { |
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var self = this; |
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this.completer.onSelect(this.data[index]); |
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// Deactive at next tick to allow other event handlers to know whether
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// the dropdown has been shown or not.
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setTimeout(function () { self.deactivate(); }, 0); |
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}, |
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onKeydown: function (e) { |
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if (!this.shown) return; |
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if (e.keyCode === 38) { // UP
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e.preventDefault(); |
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if (this.index === 0) { |
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this.index = this.data.length-1; |
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} else { |
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this.index -= 1; |
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} |
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this.activateIndexedItem(); |
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} else if (e.keyCode === 40) { // DOWN
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e.preventDefault(); |
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if (this.index === this.data.length - 1) { |
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this.index = 0; |
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} else { |
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this.index += 1; |
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} |
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this.activateIndexedItem(); |
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} else if (e.keyCode === 13 || e.keyCode === 9) { // ENTER or TAB
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e.preventDefault(); |
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this.select(parseInt(this.getActiveItem().data('index'), 10)); |
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} |
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}, |
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onClick: function (e) { |
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var $e = $(e.target); |
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e.originalEvent.keepTextCompleteDropdown = true; |
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if (!$e.hasClass('textcomplete-item')) { |
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$e = $e.parents('li.textcomplete-item'); |
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} |
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this.select(parseInt($e.data('index'), 10)); |
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}, |
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destroy: function () { |
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this.deactivate(); |
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this.$el.off('click.textComplete').remove(); |
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this.$el = null; |
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} |
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}); |
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return ListView; |
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})(); |
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$.fn.textcomplete = function (strategies) { |
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var i, l, strategy, dataKey; |
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dataKey = 'textComplete'; |
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if (strategies === 'destroy') { |
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return this.each(function () { |
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var completer = $(this).data(dataKey); |
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if (completer) { completer.destroy(); } |
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}); |
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} |
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for (i = 0, l = strategies.length; i < l; i++) { |
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strategy = strategies[i]; |
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if (!strategy.template) { |
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strategy.template = identity; |
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} |
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if (strategy.index == null) { |
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strategy.index = 2; |
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} |
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if (strategy.cache) { |
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strategy.search = memoize(strategy.search); |
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} |
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strategy.maxCount || (strategy.maxCount = 10); |
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} |
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return this.each(function () { |
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var $this, completer; |
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$this = $(this); |
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completer = $this.data(dataKey); |
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if (!completer) { |
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completer = new Completer($this); |
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$this.data(dataKey, completer); |
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} |
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completer.register(strategies); |
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}); |
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}; |
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})(window.jQuery || window.Zepto); |
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