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anikendra |
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// ----------------------------------------------------------------------------
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//
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// bootstrap-typeahead.js
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//
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// Twitter Bootstrap Typeahead Plugin
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// v1.2.2
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// https://github.com/tcrosen/twitter-bootstrap-typeahead
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//
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//
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// Author
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// ----------
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// Terry Rosen
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// tcrosen@gmail.com | @rerrify | github.com/tcrosen/
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//
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//
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// Description
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// ----------
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// Custom implementation of Twitter's Bootstrap Typeahead Plugin
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// http://twitter.github.com/bootstrap/javascript.html#typeahead
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//
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//
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// Requirements
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// ----------
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// jQuery 1.7+
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// Twitter Bootstrap 2.0+
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//
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// ----------------------------------------------------------------------------
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!
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function ($) {
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"use strict";
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//------------------------------------------------------------------
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//
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// Constructor
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//
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var Typeahead = function (element, options) {
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this.$element = $(element);
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this.options = $.extend(true, {}, $.fn.typeahead.defaults, options);
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this.$menu = $(this.options.menu).appendTo('body');
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this.shown = false;
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// Method overrides
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this.eventSupported = this.options.eventSupported || this.eventSupported;
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this.grepper = this.options.grepper || this.grepper;
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this.highlighter = this.options.highlighter || this.highlighter;
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this.lookup = this.options.lookup || this.lookup;
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this.matcher = this.options.matcher || this.matcher;
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this.render = this.options.render || this.render;
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this.select = this.options.select || this.select;
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this.sorter = this.options.sorter || this.sorter;
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this.source = this.options.source || this.source;
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if (!this.source.length) {
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var ajax = this.options.ajax;
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if (typeof ajax === 'string') {
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this.ajax = $.extend({}, $.fn.typeahead.defaults.ajax, { url: ajax });
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} else {
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this.ajax = $.extend({}, $.fn.typeahead.defaults.ajax, ajax);
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}
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if (!this.ajax.url) {
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this.ajax = null;
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}
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}
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this.listen();
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}
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Typeahead.prototype = {
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constructor: Typeahead,
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//=============================================================================================================
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//
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// Utils
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//
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//=============================================================================================================
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//------------------------------------------------------------------
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//
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// Check if an event is supported by the browser eg. 'keypress'
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// * This was included to handle the "exhaustive deprecation" of jQuery.browser in jQuery 1.8
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//
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eventSupported: function(eventName) {
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var isSupported = (eventName in this.$element);
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if (!isSupported) {
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this.$element.setAttribute(eventName, 'return;');
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isSupported = typeof this.$element[eventName] === 'function';
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}
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return isSupported;
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},
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//=============================================================================================================
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//
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// AJAX
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//
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//=============================================================================================================
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//------------------------------------------------------------------
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//
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// Handle AJAX source
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//
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ajaxer: function () {
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var that = this,
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query = that.$element.val();
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if (query === that.query) {
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return that;
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}
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// Query changed
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that.query = query;
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// Cancel last timer if set
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if (that.ajax.timerId) {
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clearTimeout(that.ajax.timerId);
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that.ajax.timerId = null;
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}
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if (!query || query.length < that.ajax.triggerLength) {
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// Cancel the ajax callback if in progress
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if (that.ajax.xhr) {
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that.ajax.xhr.abort();
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that.ajax.xhr = null;
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that.ajaxToggleLoadClass(false);
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}
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return that.shown ? that.hide() : that;
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}
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// Query is good to send, set a timer
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that.ajax.timerId = setTimeout(function() {
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$.proxy(that.ajaxExecute(query), that)
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}, that.ajax.timeout);
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return that;
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},
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//------------------------------------------------------------------
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//
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// Execute an AJAX request
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//
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ajaxExecute: function(query) {
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this.ajaxToggleLoadClass(true);
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// Cancel last call if already in progress
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if (this.ajax.xhr) this.ajax.xhr.abort();
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var params = this.ajax.preDispatch ? this.ajax.preDispatch(query) : { query : query };
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var jAjax = (this.ajax.method === "post") ? $.post : $.get;
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this.ajax.xhr = jAjax(this.ajax.url, params, $.proxy(this.ajaxLookup, this));
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this.ajax.timerId = null;
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},
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//------------------------------------------------------------------
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//
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// Perform a lookup in the AJAX results
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//
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ajaxLookup: function (data) {
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var items;
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this.ajaxToggleLoadClass(false);
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if (!this.ajax.xhr) return;
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if (this.ajax.preProcess) {
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data = this.ajax.preProcess(data);
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}
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// Save for selection retreival
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this.ajax.data = data;
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items = this.grepper(this.ajax.data);
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if (!items || !items.length) {
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return this.shown ? this.hide() : this;
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}
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this.ajax.xhr = null;
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return this.render(items.slice(0, this.options.items)).show();
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},
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//------------------------------------------------------------------
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//
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// Toggle the loading class
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//
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ajaxToggleLoadClass: function (enable) {
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if (!this.ajax.loadingClass) return;
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this.$element.toggleClass(this.ajax.loadingClass, enable);
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},
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//=============================================================================================================
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//
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// Data manipulation
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//
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//=============================================================================================================
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//------------------------------------------------------------------
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//
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// Search source
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//
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lookup: function (event) {
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var that = this,
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items;
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if (that.ajax) {
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that.ajaxer();
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}
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else {
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that.query = that.$element.val();
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if (!that.query) {
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return that.shown ? that.hide() : that;
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}
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items = that.grepper(that.source);
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if (!items || !items.length) {
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return that.shown ? that.hide() : that;
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}
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return that.render(items.slice(0, that.options.items)).show();
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}
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},
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//------------------------------------------------------------------
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//
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// Filters relevent results
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//
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grepper: function(data) {
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var that = this,
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items;
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if (data && data.length && !data[0].hasOwnProperty(that.options.display)) {
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return null;
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}
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items = $.grep(data, function (item) {
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return that.matcher(item[that.options.display], item);
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});
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return this.sorter(items);
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},
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//------------------------------------------------------------------
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//
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// Looks for a match in the source
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//
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matcher: function (item) {
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return ~item.toLowerCase().indexOf(this.query.toLowerCase());
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},
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//------------------------------------------------------------------
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//
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// Sorts the results
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//
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sorter: function (items) {
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var that = this,
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beginswith = [],
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caseSensitive = [],
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caseInsensitive = [],
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item;
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while (item = items.shift()) {
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if (!item[that.options.display].toLowerCase().indexOf(this.query.toLowerCase())) {
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beginswith.push(item);
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}
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else if (~item[that.options.display].indexOf(this.query)) {
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caseSensitive.push(item);
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}
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else {
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caseInsensitive.push(item);
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}
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}
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return beginswith.concat(caseSensitive, caseInsensitive);
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},
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//=============================================================================================================
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//
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// DOM manipulation
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//
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//=============================================================================================================
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//------------------------------------------------------------------
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//
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// Shows the results list
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//
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show: function () {
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var pos = $.extend({}, this.$element.offset(), {
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height: this.$element[0].offsetHeight
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});
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this.$menu.css({
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top: pos.top + pos.height,
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left: pos.left
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});
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this.$menu.show();
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this.shown = true;
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return this;
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},
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//------------------------------------------------------------------
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//
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// Hides the results list
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//
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hide: function () {
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this.$menu.hide();
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this.shown = false;
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return this;
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},
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//------------------------------------------------------------------
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//
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// Highlights the match(es) within the results
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//
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highlighter: function (item) {
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var query = this.query.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, '\\$&');
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return item.replace(new RegExp('(' + query + ')', 'ig'), function ($1, match) {
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return '<strong>' + match + '</strong>';
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});
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},
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//------------------------------------------------------------------
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//
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// Renders the results list
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//
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render: function (items) {
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var that = this;
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items = $(items).map(function (i, item) {
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i = $(that.options.item).attr('data-value', item[that.options.val]);
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i.find('a').html(that.highlighter(item[that.options.display], item));
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return i[0];
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});
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items.first().addClass('active');
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this.$menu.html(items);
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return this;
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},
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//------------------------------------------------------------------
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//
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// Item is selected
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//
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select: function () {
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var $selectedItem = this.$menu.find('.active');
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this.$element.val($selectedItem.text()).change();
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this.options.itemSelected($selectedItem, $selectedItem.attr('data-value'), $selectedItem.text());
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return this.hide();
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},
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//------------------------------------------------------------------
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//
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// Selects the next result
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//
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next: function (event) {
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var active = this.$menu.find('.active').removeClass('active');
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var next = active.next();
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if (!next.length) {
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next = $(this.$menu.find('li')[0]);
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}
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next.addClass('active');
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},
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//------------------------------------------------------------------
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//
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// Selects the previous result
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//
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prev: function (event) {
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var active = this.$menu.find('.active').removeClass('active');
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var prev = active.prev();
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if (!prev.length) {
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prev = this.$menu.find('li').last();
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}
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prev.addClass('active');
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},
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//=============================================================================================================
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//
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// Events
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394 |
//
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395 |
//=============================================================================================================
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396 |
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//------------------------------------------------------------------
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//
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// Listens for user events
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//
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listen: function () {
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this.$element.on('blur', $.proxy(this.blur, this))
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.on('keyup', $.proxy(this.keyup, this));
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if (this.eventSupported('keydown')) {
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this.$element.on('keydown', $.proxy(this.keypress, this));
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} else {
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408 |
this.$element.on('keypress', $.proxy(this.keypress, this));
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}
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|
410 |
|
|
|
411 |
this.$menu.on('click', $.proxy(this.click, this))
|
|
|
412 |
.on('mouseenter', 'li', $.proxy(this.mouseenter, this));
|
|
|
413 |
},
|
|
|
414 |
|
|
|
415 |
//------------------------------------------------------------------
|
|
|
416 |
//
|
|
|
417 |
// Handles a key being raised up
|
|
|
418 |
//
|
|
|
419 |
keyup: function (e) {
|
|
|
420 |
e.stopPropagation();
|
|
|
421 |
e.preventDefault();
|
|
|
422 |
|
|
|
423 |
switch (e.keyCode) {
|
|
|
424 |
case 40:
|
|
|
425 |
// down arrow
|
|
|
426 |
case 38:
|
|
|
427 |
// up arrow
|
|
|
428 |
break;
|
|
|
429 |
case 9:
|
|
|
430 |
// tab
|
|
|
431 |
case 13:
|
|
|
432 |
// enter
|
|
|
433 |
if (!this.shown) {
|
|
|
434 |
return;
|
|
|
435 |
}
|
|
|
436 |
this.select();
|
|
|
437 |
break;
|
|
|
438 |
case 27:
|
|
|
439 |
// escape
|
|
|
440 |
this.hide();
|
|
|
441 |
break;
|
|
|
442 |
default:
|
|
|
443 |
this.lookup();
|
|
|
444 |
}
|
|
|
445 |
},
|
|
|
446 |
|
|
|
447 |
//------------------------------------------------------------------
|
|
|
448 |
//
|
|
|
449 |
// Handles a key being pressed
|
|
|
450 |
//
|
|
|
451 |
keypress: function (e) {
|
|
|
452 |
e.stopPropagation();
|
|
|
453 |
if (!this.shown) {
|
|
|
454 |
return;
|
|
|
455 |
}
|
|
|
456 |
|
|
|
457 |
switch (e.keyCode) {
|
|
|
458 |
case 9:
|
|
|
459 |
// tab
|
|
|
460 |
case 13:
|
|
|
461 |
// enter
|
|
|
462 |
case 27:
|
|
|
463 |
// escape
|
|
|
464 |
e.preventDefault();
|
|
|
465 |
break;
|
|
|
466 |
case 38:
|
|
|
467 |
// up arrow
|
|
|
468 |
e.preventDefault();
|
|
|
469 |
this.prev();
|
|
|
470 |
break;
|
|
|
471 |
case 40:
|
|
|
472 |
// down arrow
|
|
|
473 |
e.preventDefault();
|
|
|
474 |
this.next();
|
|
|
475 |
break;
|
|
|
476 |
}
|
|
|
477 |
},
|
|
|
478 |
|
|
|
479 |
//------------------------------------------------------------------
|
|
|
480 |
//
|
|
|
481 |
// Handles cursor exiting the textbox
|
|
|
482 |
//
|
|
|
483 |
blur: function (e) {
|
|
|
484 |
var that = this;
|
|
|
485 |
e.stopPropagation();
|
|
|
486 |
e.preventDefault();
|
|
|
487 |
setTimeout(function () {
|
|
|
488 |
if (!that.$menu.is(':focus')) {
|
|
|
489 |
that.hide();
|
|
|
490 |
}
|
|
|
491 |
}, 150)
|
|
|
492 |
},
|
|
|
493 |
|
|
|
494 |
//------------------------------------------------------------------
|
|
|
495 |
//
|
|
|
496 |
// Handles clicking on the results list
|
|
|
497 |
//
|
|
|
498 |
click: function (e) {
|
|
|
499 |
e.stopPropagation();
|
|
|
500 |
e.preventDefault();
|
|
|
501 |
this.select();
|
|
|
502 |
},
|
|
|
503 |
|
|
|
504 |
//------------------------------------------------------------------
|
|
|
505 |
//
|
|
|
506 |
// Handles the mouse entering the results list
|
|
|
507 |
//
|
|
|
508 |
mouseenter: function (e) {
|
|
|
509 |
this.$menu.find('.active').removeClass('active');
|
|
|
510 |
$(e.currentTarget).addClass('active');
|
|
|
511 |
}
|
|
|
512 |
}
|
|
|
513 |
|
|
|
514 |
//------------------------------------------------------------------
|
|
|
515 |
//
|
|
|
516 |
// Plugin definition
|
|
|
517 |
//
|
|
|
518 |
$.fn.typeahead = function (option) {
|
|
|
519 |
return this.each(function () {
|
|
|
520 |
var $this = $(this),
|
|
|
521 |
data = $this.data('typeahead'),
|
|
|
522 |
options = typeof option === 'object' && option;
|
|
|
523 |
|
|
|
524 |
if (!data) {
|
|
|
525 |
$this.data('typeahead', (data = new Typeahead(this, options)));
|
|
|
526 |
}
|
|
|
527 |
|
|
|
528 |
if (typeof option === 'string') {
|
|
|
529 |
data[option]();
|
|
|
530 |
}
|
|
|
531 |
});
|
|
|
532 |
}
|
|
|
533 |
|
|
|
534 |
//------------------------------------------------------------------
|
|
|
535 |
//
|
|
|
536 |
// Defaults
|
|
|
537 |
//
|
|
|
538 |
$.fn.typeahead.defaults = {
|
|
|
539 |
source: [],
|
|
|
540 |
items: 8,
|
|
|
541 |
menu: '<ul class="typeahead dropdown-menu"></ul>',
|
|
|
542 |
item: '<li><a href="#"></a></li>',
|
|
|
543 |
display: 'name',
|
|
|
544 |
val: 'id',
|
|
|
545 |
itemSelected: function () { },
|
|
|
546 |
ajax: {
|
|
|
547 |
url: null,
|
|
|
548 |
timeout: 300,
|
|
|
549 |
method: 'post',
|
|
|
550 |
triggerLength: 3,
|
|
|
551 |
loadingClass: null,
|
|
|
552 |
displayField: null,
|
|
|
553 |
preDispatch: null,
|
|
|
554 |
preProcess: null
|
|
|
555 |
}
|
|
|
556 |
}
|
|
|
557 |
|
|
|
558 |
$.fn.typeahead.Constructor = Typeahead;
|
|
|
559 |
|
|
|
560 |
//------------------------------------------------------------------
|
|
|
561 |
//
|
|
|
562 |
// DOM-ready call for the Data API (no-JS implementation)
|
|
|
563 |
//
|
|
|
564 |
// Note: As of Bootstrap v2.0 this feature may be disabled using $('body').off('.data-api')
|
|
|
565 |
// More info here: https://github.com/twitter/bootstrap/tree/master/js
|
|
|
566 |
//
|
|
|
567 |
$(function () {
|
|
|
568 |
$('body').on('focus.typeahead.data-api', '[data-provide="typeahead"]', function (e) {
|
|
|
569 |
var $this = $(this);
|
|
|
570 |
|
|
|
571 |
if ($this.data('typeahead')) {
|
|
|
572 |
return;
|
|
|
573 |
}
|
|
|
574 |
|
|
|
575 |
e.preventDefault();
|
|
|
576 |
$this.typeahead($this.data());
|
|
|
577 |
})
|
|
|
578 |
});
|
|
|
579 |
|
|
|
580 |
} (window.jQuery);
|