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@@ -0,0 +1,1081 @@
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+/*!
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+ * typeahead.js 0.9.0
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+ * https://github.com/twitter/typeahead
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+ * Copyright 2013 Twitter, Inc. and other contributors; Licensed MIT
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+ */
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+
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+(function($) {
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+ var VERSION = "0.9.0";
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+ var utils = {
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+ isMsie: function() {
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+ var match = /(msie) ([\w.]+)/i.exec(navigator.userAgent);
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+ return match ? parseInt(match[2], 10) : false;
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+ },
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+ isBlankString: function(str) {
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+ return !str || /^\s*$/.test(str);
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+ },
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+ escapeRegExChars: function(str) {
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+ return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
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+ },
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+ isString: function(obj) {
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+ return typeof obj === "string";
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+ },
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+ isNumber: function(obj) {
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+ return typeof obj === "number";
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+ },
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+ isArray: $.isArray,
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+ isFunction: $.isFunction,
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+ isObject: $.isPlainObject,
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+ isUndefined: function(obj) {
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+ return typeof obj === "undefined";
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+ },
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+ bind: $.proxy,
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+ bindAll: function(obj) {
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+ var val;
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+ for (var key in obj) {
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+ $.isFunction(val = obj[key]) && (obj[key] = $.proxy(val, obj));
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+ }
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+ },
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+ indexOf: function(haystack, needle) {
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+ for (var i = 0; i < haystack.length; i++) {
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+ if (haystack[i] === needle) {
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+ return i;
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+ }
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+ }
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+ return -1;
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+ },
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+ each: $.each,
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+ map: $.map,
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+ filter: $.grep,
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+ every: function(obj, test) {
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+ var result = true;
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+ if (!obj) {
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+ return result;
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+ }
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+ $.each(obj, function(key, val) {
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+ if (!(result = test.call(null, val, key, obj))) {
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+ return false;
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+ }
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+ });
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+ return !!result;
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+ },
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+ some: function(obj, test) {
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+ var result = false;
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+ if (!obj) {
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+ return result;
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+ }
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+ $.each(obj, function(key, val) {
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+ if (result = test.call(null, val, key, obj)) {
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+ return false;
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+ }
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+ });
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+ return !!result;
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+ },
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+ mixin: $.extend,
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+ getUniqueId: function() {
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+ var counter = 0;
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+ return function() {
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+ return counter++;
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+ };
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+ }(),
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+ defer: function(fn) {
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+ setTimeout(fn, 0);
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+ },
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+ debounce: function(func, wait, immediate) {
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+ var timeout, result;
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+ return function() {
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+ var context = this, args = arguments, later, callNow;
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+ later = function() {
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+ timeout = null;
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+ if (!immediate) {
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+ result = func.apply(context, args);
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+ }
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+ };
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+ callNow = immediate && !timeout;
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+ clearTimeout(timeout);
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+ timeout = setTimeout(later, wait);
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+ if (callNow) {
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+ result = func.apply(context, args);
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+ }
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+ return result;
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+ };
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+ },
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+ throttle: function(func, wait) {
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+ var context, args, timeout, result, previous, later;
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+ previous = 0;
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+ later = function() {
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+ previous = new Date();
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+ timeout = null;
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+ result = func.apply(context, args);
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+ };
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+ return function() {
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+ var now = new Date(), remaining = wait - (now - previous);
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+ context = this;
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+ args = arguments;
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+ if (remaining <= 0) {
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+ clearTimeout(timeout);
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+ timeout = null;
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+ previous = now;
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+ result = func.apply(context, args);
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+ } else if (!timeout) {
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+ timeout = setTimeout(later, remaining);
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+ }
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+ return result;
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+ };
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+ },
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+ tokenizeQuery: function(str) {
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+ return $.trim(str).toLowerCase().split(/[\s]+/);
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+ },
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+ tokenizeText: function(str) {
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+ return $.trim(str).toLowerCase().split(/[\s\-_]+/);
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+ },
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+ getProtocol: function() {
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+ return location.protocol;
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+ },
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+ noop: function() {}
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+ };
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+ var EventTarget = function() {
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+ var eventSplitter = /\s+/;
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+ return {
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+ on: function(events, callback) {
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+ var event;
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+ if (!callback) {
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+ return this;
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+ }
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+ this._callbacks = this._callbacks || {};
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+ events = events.split(eventSplitter);
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+ while (event = events.shift()) {
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+ this._callbacks[event] = this._callbacks[event] || [];
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+ this._callbacks[event].push(callback);
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+ }
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+ return this;
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+ },
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+ trigger: function(events, data) {
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+ var event, callbacks;
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+ if (!this._callbacks) {
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+ return this;
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+ }
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+ events = events.split(eventSplitter);
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+ while (event = events.shift()) {
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+ if (callbacks = this._callbacks[event]) {
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+ for (var i = 0; i < callbacks.length; i += 1) {
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+ callbacks[i].call(this, {
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+ type: event,
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+ data: data
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+ });
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+ }
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+ }
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+ }
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+ return this;
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+ }
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+ };
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+ }();
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+ var EventBus = function() {
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+ var namespace = "typeahead:";
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+ function EventBus(o) {
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+ if (!o || !o.el) {
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+ $.error("EventBus initialized without el");
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+ }
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+ this.$el = $(o.el);
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+ }
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+ utils.mixin(EventBus.prototype, {
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+ trigger: function(type) {
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+ var args = [].slice.call(arguments, 1);
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+ this.$el.trigger(namespace + type, args);
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+ }
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+ });
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+ return EventBus;
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+ }();
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+ var PersistentStorage = function() {
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+ var ls = window.localStorage, methods;
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+ function PersistentStorage(namespace) {
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+ this.prefix = [ "__", namespace, "__" ].join("");
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+ this.ttlKey = "__ttl__";
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+ this.keyMatcher = new RegExp("^" + this.prefix);
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+ }
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+ if (window.localStorage && window.JSON) {
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+ methods = {
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+ _prefix: function(key) {
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+ return this.prefix + key;
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+ },
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+ _ttlKey: function(key) {
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+ return this._prefix(key) + this.ttlKey;
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+ },
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+ get: function(key) {
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+ if (this.isExpired(key)) {
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+ this.remove(key);
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+ }
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+ return decode(ls.getItem(this._prefix(key)));
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+ },
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+ set: function(key, val, ttl) {
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+ if (utils.isNumber(ttl)) {
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+ ls.setItem(this._ttlKey(key), encode(now() + ttl));
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+ } else {
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+ ls.removeItem(this._ttlKey(key));
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+ }
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+ return ls.setItem(this._prefix(key), encode(val));
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+ },
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+ remove: function(key) {
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+ ls.removeItem(this._ttlKey(key));
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+ ls.removeItem(this._prefix(key));
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+ return this;
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+ },
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+ clear: function() {
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+ var i, key, keys = [], len = ls.length;
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+ for (i = 0; i < len; i++) {
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+ if ((key = ls.key(i)).match(this.keyMatcher)) {
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+ keys.push(key.replace(this.keyMatcher, ""));
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+ }
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+ }
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+ for (i = keys.length; i--; ) {
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+ this.remove(keys[i]);
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+ }
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+ return this;
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+ },
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+ isExpired: function(key) {
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+ var ttl = decode(ls.getItem(this._ttlKey(key)));
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+ return utils.isNumber(ttl) && now() > ttl ? true : false;
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+ }
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+ };
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+ } else {
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+ methods = {
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+ get: utils.noop,
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+ set: utils.noop,
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+ remove: utils.noop,
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+ clear: utils.noop,
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+ isExpired: utils.noop
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+ };
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+ }
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+ utils.mixin(PersistentStorage.prototype, methods);
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+ return PersistentStorage;
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+ function now() {
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+ return new Date().getTime();
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+ }
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+ function encode(val) {
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+ return JSON.stringify(utils.isUndefined(val) ? null : val);
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+ }
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+ function decode(val) {
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+ return JSON.parse(val);
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+ }
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+ }();
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+ var RequestCache = function() {
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+ function RequestCache(o) {
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+ utils.bindAll(this);
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+ o = o || {};
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+ this.sizeLimit = o.sizeLimit || 10;
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+ this.cache = {};
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+ this.cachedKeysByAge = [];
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+ }
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+ utils.mixin(RequestCache.prototype, {
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+ get: function(url) {
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+ return this.cache[url];
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+ },
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+ set: function(url, resp) {
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+ var requestToEvict;
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+ if (this.cachedKeysByAge.length === this.sizeLimit) {
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+ requestToEvict = this.cachedKeysByAge.shift();
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+ delete this.cache[requestToEvict];
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+ }
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+ this.cache[url] = resp;
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+ this.cachedKeysByAge.push(url);
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+ }
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+ });
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+ return RequestCache;
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+ }();
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+ var Transport = function() {
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+ var pendingRequests = 0, maxParallelRequests, requestCache;
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+ function Transport(o) {
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+ utils.bindAll(this);
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+ o = utils.isString(o) ? {
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+ url: o
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+ } : o;
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+ requestCache = requestCache || new RequestCache();
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+ maxParallelRequests = utils.isNumber(o.maxParallelRequests) ? o.maxParallelRequests : maxParallelRequests || 6;
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+ this.url = o.url;
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+ this.wildcard = o.wildcard || "%QUERY";
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+ this.filter = o.filter;
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+ this.replace = o.replace;
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+ this.ajaxSettings = {
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+ type: "get",
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+ cache: o.cache,
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+ timeout: o.timeout,
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+ dataType: o.dataType || "json",
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+ beforeSend: o.beforeSend
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+ };
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+ this.get = (/^throttle$/i.test(o.rateLimitFn) ? utils.throttle : utils.debounce)(this.get, o.rateLimitWait || 300);
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+ }
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+ utils.mixin(Transport.prototype, {
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+ get: function(query, cb) {
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+ var that = this, encodedQuery = encodeURIComponent(query || ""), url, resp;
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+ url = this.replace ? this.replace(this.url, encodedQuery) : this.url.replace(this.wildcard, encodedQuery);
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+ if (resp = requestCache.get(url)) {
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+ cb && cb(resp);
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+ } else if (belowPendingRequestsThreshold()) {
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+ incrementPendingRequests();
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+ $.ajax(url, this.ajaxSettings).done(done).always(always);
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+ } else {
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+ this.onDeckRequestArgs = [].slice.call(arguments, 0);
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+ }
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+ function done(resp) {
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+ resp = that.filter ? that.filter(resp) : resp;
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+ cb && cb(resp);
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+ requestCache.set(url, resp);
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+ }
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+ function always() {
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+ decrementPendingRequests();
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+ if (that.onDeckRequestArgs) {
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+ that.get.apply(that, that.onDeckRequestArgs);
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+ that.onDeckRequestArgs = null;
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+ }
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+ }
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+ }
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+ });
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+ return Transport;
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+ function incrementPendingRequests() {
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+ pendingRequests++;
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+ }
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+ function decrementPendingRequests() {
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+ pendingRequests--;
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+ }
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+ function belowPendingRequestsThreshold() {
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+ return pendingRequests < maxParallelRequests;
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+ }
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+ }();
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+ var Dataset = function() {
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+ function Dataset(o) {
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+ utils.bindAll(this);
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+ if (o.template && !o.engine) {
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+ $.error("no template engine specified");
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+ }
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+ if (!o.local && !o.prefetch && !o.remote) {
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+ $.error("one of local, prefetch, or remote is requried");
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+ }
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+ this.name = o.name || utils.getUniqueId();
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+ this.limit = o.limit || 5;
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+ this.header = o.header;
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+ this.footer = o.footer;
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+ this.valueKey = o.valueKey || "value";
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+ this.template = compileTemplate(o.template, o.engine, this.valueKey);
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+ this.local = o.local;
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+ this.prefetch = o.prefetch;
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+ this.remote = o.remote;
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+ this.keys = {
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+ version: "version",
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+ protocol: "protocol",
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+ itemHash: "itemHash",
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+ adjacencyList: "adjacencyList"
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+ };
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+ this.itemHash = {};
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+ this.adjacencyList = {};
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+ this.storage = o.name ? new PersistentStorage(o.name) : null;
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+ }
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+ utils.mixin(Dataset.prototype, {
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+ _processLocalData: function(data) {
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+ this._mergeProcessedData(this._processData(data));
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+ },
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+ _loadPrefetchData: function(o) {
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+ var that = this, deferred, version, protocol, itemHash, adjacencyList, isExpired;
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+ if (this.storage) {
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+ version = this.storage.get(this.keys.version);
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+ protocol = this.storage.get(this.keys.protocol);
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+ itemHash = this.storage.get(this.keys.itemHash);
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+ adjacencyList = this.storage.get(this.keys.adjacencyList);
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+ isExpired = version !== VERSION || protocol !== utils.getProtocol();
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+ }
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+ o = utils.isString(o) ? {
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+ url: o
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+ } : o;
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+ o.ttl = utils.isNumber(o.ttl) ? o.ttl : 24 * 60 * 60 * 1e3;
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+ if (itemHash && adjacencyList && !isExpired) {
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+ this._mergeProcessedData({
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+ itemHash: itemHash,
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+ adjacencyList: adjacencyList
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+ });
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+ deferred = $.Deferred().resolve();
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+ } else {
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+ deferred = $.getJSON(o.url).done(processPrefetchData);
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+ }
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+ return deferred;
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+ function processPrefetchData(data) {
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+ var filteredData = o.filter ? o.filter(data) : data, processedData = that._processData(filteredData), itemHash = processedData.itemHash, adjacencyList = processedData.adjacencyList;
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+ if (that.storage) {
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+ that.storage.set(that.keys.itemHash, itemHash, o.ttl);
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+ that.storage.set(that.keys.adjacencyList, adjacencyList, o.ttl);
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+ that.storage.set(that.keys.version, VERSION, o.ttl);
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+ that.storage.set(that.keys.protocol, utils.getProtocol(), o.ttl);
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+ }
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+ that._mergeProcessedData(processedData);
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+ }
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+ },
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+ _transformDatum: function(datum) {
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+ var value = utils.isString(datum) ? datum : datum[this.valueKey], tokens = datum.tokens || utils.tokenizeText(value), item = {
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+ value: value,
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+ tokens: tokens
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+ };
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+ if (utils.isString(datum)) {
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+ item.datum = {};
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+ item.datum[this.valueKey] = datum;
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|
|
+ } else {
|
|
|
+ item.datum = datum;
|
|
|
+ }
|
|
|
+ item.tokens = utils.filter(item.tokens, function(token) {
|
|
|
+ return !utils.isBlankString(token);
|
|
|
+ });
|
|
|
+ item.tokens = utils.map(item.tokens, function(token) {
|
|
|
+ return token.toLowerCase();
|
|
|
+ });
|
|
|
+ return item;
|
|
|
+ },
|
|
|
+ _processData: function(data) {
|
|
|
+ var that = this, itemHash = {}, adjacencyList = {};
|
|
|
+ utils.each(data, function(i, datum) {
|
|
|
+ var item = that._transformDatum(datum), id = utils.getUniqueId(item.value);
|
|
|
+ itemHash[id] = item;
|
|
|
+ utils.each(item.tokens, function(i, token) {
|
|
|
+ var character = token.charAt(0), adjacency = adjacencyList[character] || (adjacencyList[character] = [ id ]);
|
|
|
+ !~utils.indexOf(adjacency, id) && adjacency.push(id);
|
|
|
+ });
|
|
|
+ });
|
|
|
+ return {
|
|
|
+ itemHash: itemHash,
|
|
|
+ adjacencyList: adjacencyList
|
|
|
+ };
|
|
|
+ },
|
|
|
+ _mergeProcessedData: function(processedData) {
|
|
|
+ var that = this;
|
|
|
+ utils.mixin(this.itemHash, processedData.itemHash);
|
|
|
+ utils.each(processedData.adjacencyList, function(character, adjacency) {
|
|
|
+ var masterAdjacency = that.adjacencyList[character];
|
|
|
+ that.adjacencyList[character] = masterAdjacency ? masterAdjacency.concat(adjacency) : adjacency;
|
|
|
+ });
|
|
|
+ },
|
|
|
+ _getLocalSuggestions: function(terms) {
|
|
|
+ var that = this, firstChars = [], lists = [], shortestList, suggestions = [];
|
|
|
+ utils.each(terms, function(i, term) {
|
|
|
+ var firstChar = term.charAt(0);
|
|
|
+ !~utils.indexOf(firstChars, firstChar) && firstChars.push(firstChar);
|
|
|
+ });
|
|
|
+ utils.each(firstChars, function(i, firstChar) {
|
|
|
+ var list = that.adjacencyList[firstChar];
|
|
|
+ if (!list) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ lists.push(list);
|
|
|
+ if (!shortestList || list.length < shortestList.length) {
|
|
|
+ shortestList = list;
|
|
|
+ }
|
|
|
+ });
|
|
|
+ if (lists.length < firstChars.length) {
|
|
|
+ return [];
|
|
|
+ }
|
|
|
+ utils.each(shortestList, function(i, id) {
|
|
|
+ var item = that.itemHash[id], isCandidate, isMatch;
|
|
|
+ isCandidate = utils.every(lists, function(list) {
|
|
|
+ return ~utils.indexOf(list, id);
|
|
|
+ });
|
|
|
+ isMatch = isCandidate && utils.every(terms, function(term) {
|
|
|
+ return utils.some(item.tokens, function(token) {
|
|
|
+ return token.indexOf(term) === 0;
|
|
|
+ });
|
|
|
+ });
|
|
|
+ isMatch && suggestions.push(item);
|
|
|
+ });
|
|
|
+ return suggestions;
|
|
|
+ },
|
|
|
+ initialize: function() {
|
|
|
+ var deferred;
|
|
|
+ this.local && this._processLocalData(this.local);
|
|
|
+ this.transport = this.remote ? new Transport(this.remote) : null;
|
|
|
+ deferred = this.prefetch ? this._loadPrefetchData(this.prefetch) : $.Deferred().resolve();
|
|
|
+ this.local = this.prefetch = this.remote = null;
|
|
|
+ this.initialize = function() {
|
|
|
+ return deferred;
|
|
|
+ };
|
|
|
+ return deferred;
|
|
|
+ },
|
|
|
+ getSuggestions: function(query, cb) {
|
|
|
+ var that = this, terms = utils.tokenizeQuery(query), suggestions = this._getLocalSuggestions(terms).slice(0, this.limit);
|
|
|
+ cb && cb(suggestions);
|
|
|
+ if (suggestions.length < this.limit && this.transport) {
|
|
|
+ this.transport.get(query, processRemoteData);
|
|
|
+ }
|
|
|
+ function processRemoteData(data) {
|
|
|
+ suggestions = suggestions.slice(0);
|
|
|
+ utils.each(data, function(i, datum) {
|
|
|
+ var item = that._transformDatum(datum), isDuplicate;
|
|
|
+ isDuplicate = utils.some(suggestions, function(suggestion) {
|
|
|
+ return item.value === suggestion.value;
|
|
|
+ });
|
|
|
+ !isDuplicate && suggestions.push(item);
|
|
|
+ return suggestions.length < that.limit;
|
|
|
+ });
|
|
|
+ cb && cb(suggestions);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ });
|
|
|
+ return Dataset;
|
|
|
+ function compileTemplate(template, engine, valueKey) {
|
|
|
+ var wrapper = '<div class="tt-suggestion">%body</div>', compiledTemplate;
|
|
|
+ if (template) {
|
|
|
+ compiledTemplate = engine.compile(wrapper.replace("%body", template));
|
|
|
+ } else {
|
|
|
+ compiledTemplate = {
|
|
|
+ render: function(context) {
|
|
|
+ return wrapper.replace("%body", "<p>" + context[valueKey] + "</p>");
|
|
|
+ }
|
|
|
+ };
|
|
|
+ }
|
|
|
+ return compiledTemplate;
|
|
|
+ }
|
|
|
+ }();
|
|
|
+ var InputView = function() {
|
|
|
+ function InputView(o) {
|
|
|
+ var that = this;
|
|
|
+ utils.bindAll(this);
|
|
|
+ this.specialKeyCodeMap = {
|
|
|
+ 9: "tab",
|
|
|
+ 27: "esc",
|
|
|
+ 37: "left",
|
|
|
+ 39: "right",
|
|
|
+ 13: "enter",
|
|
|
+ 38: "up",
|
|
|
+ 40: "down"
|
|
|
+ };
|
|
|
+ this.$hint = $(o.hint);
|
|
|
+ this.$input = $(o.input).on("blur.tt", this._handleBlur).on("focus.tt", this._handleFocus).on("keydown.tt", this._handleSpecialKeyEvent);
|
|
|
+ if (!utils.isMsie()) {
|
|
|
+ this.$input.on("input.tt", this._compareQueryToInputValue);
|
|
|
+ } else {
|
|
|
+ this.$input.on("keydown.tt keypress.tt cut.tt paste.tt", function($e) {
|
|
|
+ if (that.specialKeyCodeMap[$e.which || $e.keyCode]) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ utils.defer(that._compareQueryToInputValue);
|
|
|
+ });
|
|
|
+ }
|
|
|
+ this.query = this.$input.val();
|
|
|
+ this.$overflowHelper = buildOverflowHelper(this.$input);
|
|
|
+ }
|
|
|
+ utils.mixin(InputView.prototype, EventTarget, {
|
|
|
+ _handleFocus: function() {
|
|
|
+ this.trigger("focused");
|
|
|
+ },
|
|
|
+ _handleBlur: function() {
|
|
|
+ this.trigger("blured");
|
|
|
+ },
|
|
|
+ _handleSpecialKeyEvent: function($e) {
|
|
|
+ var keyName = this.specialKeyCodeMap[$e.which || $e.keyCode];
|
|
|
+ keyName && this.trigger(keyName + "Keyed", $e);
|
|
|
+ },
|
|
|
+ _compareQueryToInputValue: function() {
|
|
|
+ var inputValue = this.getInputValue(), isSameQuery = compareQueries(this.query, inputValue), isSameQueryExceptWhitespace = isSameQuery ? this.query.length !== inputValue.length : false;
|
|
|
+ if (isSameQueryExceptWhitespace) {
|
|
|
+ this.trigger("whitespaceChanged", {
|
|
|
+ value: this.query
|
|
|
+ });
|
|
|
+ } else if (!isSameQuery) {
|
|
|
+ this.trigger("queryChanged", {
|
|
|
+ value: this.query = inputValue
|
|
|
+ });
|
|
|
+ }
|
|
|
+ },
|
|
|
+ destroy: function() {
|
|
|
+ this.$hint.off(".tt");
|
|
|
+ this.$input.off(".tt");
|
|
|
+ this.$hint = this.$input = this.$overflowHelper = null;
|
|
|
+ },
|
|
|
+ focus: function() {
|
|
|
+ this.$input.focus();
|
|
|
+ },
|
|
|
+ blur: function() {
|
|
|
+ this.$input.blur();
|
|
|
+ },
|
|
|
+ getQuery: function() {
|
|
|
+ return this.query;
|
|
|
+ },
|
|
|
+ getInputValue: function() {
|
|
|
+ return this.$input.val();
|
|
|
+ },
|
|
|
+ setInputValue: function(value, silent) {
|
|
|
+ this.$input.val(value);
|
|
|
+ if (silent !== true) {
|
|
|
+ this._compareQueryToInputValue();
|
|
|
+ }
|
|
|
+ },
|
|
|
+ getHintValue: function() {
|
|
|
+ return this.$hint.val();
|
|
|
+ },
|
|
|
+ setHintValue: function(value) {
|
|
|
+ this.$hint.val(value);
|
|
|
+ },
|
|
|
+ getLanguageDirection: function() {
|
|
|
+ return (this.$input.css("direction") || "ltr").toLowerCase();
|
|
|
+ },
|
|
|
+ isOverflow: function() {
|
|
|
+ this.$overflowHelper.text(this.getInputValue());
|
|
|
+ return this.$overflowHelper.width() > this.$input.width();
|
|
|
+ },
|
|
|
+ isCursorAtEnd: function() {
|
|
|
+ var valueLength = this.$input.val().length, selectionStart = this.$input[0].selectionStart, range;
|
|
|
+ if (utils.isNumber(selectionStart)) {
|
|
|
+ return selectionStart === valueLength;
|
|
|
+ } else if (document.selection) {
|
|
|
+ range = document.selection.createRange();
|
|
|
+ range.moveStart("character", -valueLength);
|
|
|
+ return valueLength === range.text.length;
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ });
|
|
|
+ return InputView;
|
|
|
+ function buildOverflowHelper($input) {
|
|
|
+ return $("<span></span>").css({
|
|
|
+ position: "absolute",
|
|
|
+ left: "-9999px",
|
|
|
+ visibility: "hidden",
|
|
|
+ whiteSpace: "nowrap",
|
|
|
+ fontFamily: $input.css("font-family"),
|
|
|
+ fontSize: $input.css("font-size"),
|
|
|
+ fontStyle: $input.css("font-style"),
|
|
|
+ fontVariant: $input.css("font-variant"),
|
|
|
+ fontWeight: $input.css("font-weight"),
|
|
|
+ wordSpacing: $input.css("word-spacing"),
|
|
|
+ letterSpacing: $input.css("letter-spacing"),
|
|
|
+ textIndent: $input.css("text-indent"),
|
|
|
+ textRendering: $input.css("text-rendering"),
|
|
|
+ textTransform: $input.css("text-transform")
|
|
|
+ }).insertAfter($input);
|
|
|
+ }
|
|
|
+ function compareQueries(a, b) {
|
|
|
+ a = (a || "").replace(/^\s*/g, "").replace(/\s{2,}/g, " ");
|
|
|
+ b = (b || "").replace(/^\s*/g, "").replace(/\s{2,}/g, " ");
|
|
|
+ return a === b;
|
|
|
+ }
|
|
|
+ }();
|
|
|
+ var DropdownView = function() {
|
|
|
+ var html = {
|
|
|
+ suggestionsList: '<span class="tt-suggestions"></span>'
|
|
|
+ }, css = {
|
|
|
+ suggestionsList: {
|
|
|
+ display: "block"
|
|
|
+ },
|
|
|
+ suggestion: {
|
|
|
+ whiteSpace: "nowrap",
|
|
|
+ cursor: "pointer"
|
|
|
+ },
|
|
|
+ suggestionChild: {
|
|
|
+ whiteSpace: "normal"
|
|
|
+ }
|
|
|
+ };
|
|
|
+ function DropdownView(o) {
|
|
|
+ utils.bindAll(this);
|
|
|
+ this.isOpen = false;
|
|
|
+ this.isEmpty = true;
|
|
|
+ this.isMouseOverDropdown = false;
|
|
|
+ this.$menu = $(o.menu).on("mouseenter.tt", this._handleMouseenter).on("mouseleave.tt", this._handleMouseleave).on("click.tt", ".tt-suggestion", this._handleSelection).on("mouseover.tt", ".tt-suggestion", this._handleMouseover);
|
|
|
+ }
|
|
|
+ utils.mixin(DropdownView.prototype, EventTarget, {
|
|
|
+ _handleMouseenter: function() {
|
|
|
+ this.isMouseOverDropdown = true;
|
|
|
+ },
|
|
|
+ _handleMouseleave: function() {
|
|
|
+ this.isMouseOverDropdown = false;
|
|
|
+ },
|
|
|
+ _handleMouseover: function($e) {
|
|
|
+ var $suggestion = $($e.currentTarget);
|
|
|
+ this._getSuggestions().removeClass("tt-is-under-cursor");
|
|
|
+ $suggestion.addClass("tt-is-under-cursor");
|
|
|
+ },
|
|
|
+ _handleSelection: function($e) {
|
|
|
+ var $suggestion = $($e.currentTarget);
|
|
|
+ this.trigger("suggestionSelected", extractSuggestion($suggestion));
|
|
|
+ },
|
|
|
+ _show: function() {
|
|
|
+ this.$menu.css("display", "block");
|
|
|
+ },
|
|
|
+ _hide: function() {
|
|
|
+ this.$menu.hide();
|
|
|
+ },
|
|
|
+ _moveCursor: function(increment) {
|
|
|
+ var $suggestions, $cur, nextIndex, $underCursor;
|
|
|
+ if (!this.isVisible()) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ $suggestions = this._getSuggestions();
|
|
|
+ $cur = $suggestions.filter(".tt-is-under-cursor");
|
|
|
+ $cur.removeClass("tt-is-under-cursor");
|
|
|
+ nextIndex = $suggestions.index($cur) + increment;
|
|
|
+ nextIndex = (nextIndex + 1) % ($suggestions.length + 1) - 1;
|
|
|
+ if (nextIndex === -1) {
|
|
|
+ this.trigger("cursorRemoved");
|
|
|
+ return;
|
|
|
+ } else if (nextIndex < -1) {
|
|
|
+ nextIndex = $suggestions.length - 1;
|
|
|
+ }
|
|
|
+ $underCursor = $suggestions.eq(nextIndex).addClass("tt-is-under-cursor");
|
|
|
+ this.trigger("cursorMoved", extractSuggestion($underCursor));
|
|
|
+ },
|
|
|
+ _getSuggestions: function() {
|
|
|
+ return this.$menu.find(".tt-suggestions > .tt-suggestion");
|
|
|
+ },
|
|
|
+ destroy: function() {
|
|
|
+ this.$menu.off(".tt");
|
|
|
+ this.$menu = null;
|
|
|
+ },
|
|
|
+ isVisible: function() {
|
|
|
+ return this.isOpen && !this.isEmpty;
|
|
|
+ },
|
|
|
+ closeUnlessMouseIsOverDropdown: function() {
|
|
|
+ if (!this.isMouseOverDropdown) {
|
|
|
+ this.close();
|
|
|
+ }
|
|
|
+ },
|
|
|
+ close: function() {
|
|
|
+ if (this.isOpen) {
|
|
|
+ this.isOpen = false;
|
|
|
+ this._hide();
|
|
|
+ this.$menu.find(".tt-suggestions > .tt-suggestion").removeClass("tt-is-under-cursor");
|
|
|
+ this.trigger("closed");
|
|
|
+ }
|
|
|
+ },
|
|
|
+ open: function() {
|
|
|
+ if (!this.isOpen) {
|
|
|
+ this.isOpen = true;
|
|
|
+ !this.isEmpty && this._show();
|
|
|
+ this.trigger("opened");
|
|
|
+ }
|
|
|
+ },
|
|
|
+ setLanguageDirection: function(dir) {
|
|
|
+ var ltrCss = {
|
|
|
+ left: "0",
|
|
|
+ right: "auto"
|
|
|
+ }, rtlCss = {
|
|
|
+ left: "auto",
|
|
|
+ right: " 0"
|
|
|
+ };
|
|
|
+ dir === "ltr" ? this.$menu.css(ltrCss) : this.$menu.css(rtlCss);
|
|
|
+ },
|
|
|
+ moveCursorUp: function() {
|
|
|
+ this._moveCursor(-1);
|
|
|
+ },
|
|
|
+ moveCursorDown: function() {
|
|
|
+ this._moveCursor(+1);
|
|
|
+ },
|
|
|
+ getSuggestionUnderCursor: function() {
|
|
|
+ var $suggestion = this._getSuggestions().filter(".tt-is-under-cursor").first();
|
|
|
+ return $suggestion.length > 0 ? extractSuggestion($suggestion) : null;
|
|
|
+ },
|
|
|
+ getFirstSuggestion: function() {
|
|
|
+ var $suggestion = this._getSuggestions().first();
|
|
|
+ return $suggestion.length > 0 ? extractSuggestion($suggestion) : null;
|
|
|
+ },
|
|
|
+ renderSuggestions: function(dataset, suggestions) {
|
|
|
+ var datasetClassName = "tt-dataset-" + dataset.name, $suggestionsList, $dataset = this.$menu.find("." + datasetClassName), elBuilder, fragment, $el;
|
|
|
+ if ($dataset.length === 0) {
|
|
|
+ $suggestionsList = $(html.suggestionsList).css(css.suggestionsList);
|
|
|
+ $dataset = $("<div></div>").addClass(datasetClassName).append(dataset.header).append($suggestionsList).append(dataset.footer).appendTo(this.$menu);
|
|
|
+ }
|
|
|
+ if (suggestions.length > 0) {
|
|
|
+ this.isEmpty = false;
|
|
|
+ this.isOpen && this._show();
|
|
|
+ elBuilder = document.createElement("div");
|
|
|
+ fragment = document.createDocumentFragment();
|
|
|
+ utils.each(suggestions, function(i, suggestion) {
|
|
|
+ elBuilder.innerHTML = dataset.template.render(suggestion.datum);
|
|
|
+ $el = $(elBuilder.firstChild).css(css.suggestion).data("suggestion", suggestion);
|
|
|
+ $el.children().each(function() {
|
|
|
+ $(this).css(css.suggestionChild);
|
|
|
+ });
|
|
|
+ fragment.appendChild($el[0]);
|
|
|
+ });
|
|
|
+ $dataset.show().find(".tt-suggestions").html(fragment);
|
|
|
+ } else {
|
|
|
+ this.clearSuggestions(dataset.name);
|
|
|
+ }
|
|
|
+ this.trigger("suggestionsRendered");
|
|
|
+ },
|
|
|
+ clearSuggestions: function(datasetName) {
|
|
|
+ var $datasets = datasetName ? this.$menu.find(".tt-dataset-" + datasetName) : this.$menu.find('[class^="tt-dataset-"]'), $suggestions = $datasets.find(".tt-suggestions");
|
|
|
+ $datasets.hide();
|
|
|
+ $suggestions.empty();
|
|
|
+ if (this._getSuggestions().length === 0) {
|
|
|
+ this.isEmpty = true;
|
|
|
+ this._hide();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ });
|
|
|
+ return DropdownView;
|
|
|
+ function extractSuggestion($el) {
|
|
|
+ return $el.data("suggestion");
|
|
|
+ }
|
|
|
+ }();
|
|
|
+ var TypeaheadView = function() {
|
|
|
+ var html = {
|
|
|
+ wrapper: '<span class="twitter-typeahead"></span>',
|
|
|
+ hint: '<input class="tt-hint" type="text" autocomplete="off" spellcheck="off" disabled>',
|
|
|
+ dropdown: '<span class="tt-dropdown-menu"></span>'
|
|
|
+ }, css = {
|
|
|
+ wrapper: {
|
|
|
+ position: "relative",
|
|
|
+ display: "inline-block"
|
|
|
+ },
|
|
|
+ hint: {
|
|
|
+ position: "absolute",
|
|
|
+ top: "0",
|
|
|
+ left: "0",
|
|
|
+ borderColor: "transparent",
|
|
|
+ boxShadow: "none"
|
|
|
+ },
|
|
|
+ query: {
|
|
|
+ position: "relative",
|
|
|
+ verticalAlign: "top",
|
|
|
+ backgroundColor: "transparent"
|
|
|
+ },
|
|
|
+ dropdown: {
|
|
|
+ position: "absolute",
|
|
|
+ top: "100%",
|
|
|
+ left: "0",
|
|
|
+ zIndex: "100",
|
|
|
+ display: "none"
|
|
|
+ }
|
|
|
+ };
|
|
|
+ if (utils.isMsie()) {
|
|
|
+ utils.mixin(css.query, {
|
|
|
+ backgroundImage: "url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)"
|
|
|
+ });
|
|
|
+ }
|
|
|
+ if (utils.isMsie() && utils.isMsie() <= 7) {
|
|
|
+ utils.mixin(css.wrapper, {
|
|
|
+ display: "inline",
|
|
|
+ zoom: "1"
|
|
|
+ });
|
|
|
+ utils.mixin(css.query, {
|
|
|
+ marginTop: "-1px"
|
|
|
+ });
|
|
|
+ }
|
|
|
+ function TypeaheadView(o) {
|
|
|
+ var $menu, $input, $hint;
|
|
|
+ utils.bindAll(this);
|
|
|
+ this.$node = buildDomStructure(o.input);
|
|
|
+ this.datasets = o.datasets;
|
|
|
+ this.dir = null;
|
|
|
+ this.eventBus = o.eventBus;
|
|
|
+ $menu = this.$node.find(".tt-dropdown-menu");
|
|
|
+ $input = this.$node.find(".tt-query");
|
|
|
+ $hint = this.$node.find(".tt-hint");
|
|
|
+ this.dropdownView = new DropdownView({
|
|
|
+ menu: $menu
|
|
|
+ }).on("suggestionSelected", this._handleSelection).on("cursorMoved", this._clearHint).on("cursorMoved", this._setInputValueToSuggestionUnderCursor).on("cursorRemoved", this._setInputValueToQuery).on("cursorRemoved", this._updateHint).on("suggestionsRendered", this._updateHint).on("opened", this._updateHint).on("closed", this._clearHint).on("opened closed", this._propagateEvent);
|
|
|
+ this.inputView = new InputView({
|
|
|
+ input: $input,
|
|
|
+ hint: $hint
|
|
|
+ }).on("focused", this._openDropdown).on("blured", this._closeDropdown).on("blured", this._setInputValueToQuery).on("enterKeyed", this._handleSelection).on("queryChanged", this._clearHint).on("queryChanged", this._clearSuggestions).on("queryChanged", this._getSuggestions).on("whitespaceChanged", this._updateHint).on("queryChanged whitespaceChanged", this._openDropdown).on("queryChanged whitespaceChanged", this._setLanguageDirection).on("escKeyed", this._closeDropdown).on("escKeyed", this._setInputValueToQuery).on("tabKeyed upKeyed downKeyed", this._managePreventDefault).on("upKeyed downKeyed", this._moveDropdownCursor).on("upKeyed downKeyed", this._openDropdown).on("tabKeyed leftKeyed rightKeyed", this._autocomplete);
|
|
|
+ }
|
|
|
+ utils.mixin(TypeaheadView.prototype, EventTarget, {
|
|
|
+ _managePreventDefault: function(e) {
|
|
|
+ var $e = e.data, hint, inputValue, preventDefault = false;
|
|
|
+ switch (e.type) {
|
|
|
+ case "tabKeyed":
|
|
|
+ hint = this.inputView.getHintValue();
|
|
|
+ inputValue = this.inputView.getInputValue();
|
|
|
+ preventDefault = hint && hint !== inputValue;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case "upKeyed":
|
|
|
+ case "downKeyed":
|
|
|
+ preventDefault = !$e.shiftKey && !$e.ctrlKey && !$e.metaKey;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ preventDefault && $e.preventDefault();
|
|
|
+ },
|
|
|
+ _setLanguageDirection: function() {
|
|
|
+ var dir = this.inputView.getLanguageDirection();
|
|
|
+ if (dir !== this.dir) {
|
|
|
+ this.dir = dir;
|
|
|
+ this.$node.css("direction", dir);
|
|
|
+ this.dropdownView.setLanguageDirection(dir);
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _updateHint: function() {
|
|
|
+ var suggestion = this.dropdownView.getFirstSuggestion(), hint = suggestion ? suggestion.value : null, dropdownIsVisible = this.dropdownView.isVisible(), inputHasOverflow = this.inputView.isOverflow(), inputValue, query, escapedQuery, beginsWithQuery, match;
|
|
|
+ if (hint && dropdownIsVisible && !inputHasOverflow) {
|
|
|
+ inputValue = this.inputView.getInputValue();
|
|
|
+ query = inputValue.replace(/\s{2,}/g, " ").replace(/^\s+/g, "");
|
|
|
+ escapedQuery = utils.escapeRegExChars(query);
|
|
|
+ beginsWithQuery = new RegExp("^(?:" + escapedQuery + ")(.*$)", "i");
|
|
|
+ match = beginsWithQuery.exec(hint);
|
|
|
+ this.inputView.setHintValue(inputValue + (match ? match[1] : ""));
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _clearHint: function() {
|
|
|
+ this.inputView.setHintValue("");
|
|
|
+ },
|
|
|
+ _clearSuggestions: function() {
|
|
|
+ this.dropdownView.clearSuggestions();
|
|
|
+ },
|
|
|
+ _setInputValueToQuery: function() {
|
|
|
+ this.inputView.setInputValue(this.inputView.getQuery());
|
|
|
+ },
|
|
|
+ _setInputValueToSuggestionUnderCursor: function(e) {
|
|
|
+ var suggestion = e.data;
|
|
|
+ this.inputView.setInputValue(suggestion.value, true);
|
|
|
+ },
|
|
|
+ _openDropdown: function() {
|
|
|
+ this.dropdownView.open();
|
|
|
+ },
|
|
|
+ _closeDropdown: function(e) {
|
|
|
+ this.dropdownView[e.type === "blured" ? "closeUnlessMouseIsOverDropdown" : "close"]();
|
|
|
+ },
|
|
|
+ _moveDropdownCursor: function(e) {
|
|
|
+ var $e = e.data;
|
|
|
+ if (!$e.shiftKey && !$e.ctrlKey && !$e.metaKey) {
|
|
|
+ this.dropdownView[e.type === "upKeyed" ? "moveCursorUp" : "moveCursorDown"]();
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _handleSelection: function(e) {
|
|
|
+ var byClick = e.type === "suggestionSelected", suggestion = byClick ? e.data : this.dropdownView.getSuggestionUnderCursor();
|
|
|
+ if (suggestion) {
|
|
|
+ this.inputView.setInputValue(suggestion.value);
|
|
|
+ byClick ? this.inputView.focus() : e.data.preventDefault();
|
|
|
+ byClick && utils.isMsie() ? utils.defer(this.dropdownView.close) : this.dropdownView.close();
|
|
|
+ this.eventBus.trigger("selected", suggestion.datum);
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _getSuggestions: function() {
|
|
|
+ var that = this, query = this.inputView.getQuery();
|
|
|
+ if (utils.isBlankString(query)) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ utils.each(this.datasets, function(i, dataset) {
|
|
|
+ dataset.getSuggestions(query, function(suggestions) {
|
|
|
+ if (query === that.inputView.getQuery()) {
|
|
|
+ that.dropdownView.renderSuggestions(dataset, suggestions);
|
|
|
+ }
|
|
|
+ });
|
|
|
+ });
|
|
|
+ },
|
|
|
+ _autocomplete: function(e) {
|
|
|
+ var isCursorAtEnd, ignoreEvent, query, hint, suggestion;
|
|
|
+ if (e.type === "rightKeyed" || e.type === "leftKeyed") {
|
|
|
+ isCursorAtEnd = this.inputView.isCursorAtEnd();
|
|
|
+ ignoreEvent = this.inputView.getLanguageDirection() === "ltr" ? e.type === "leftKeyed" : e.type === "rightKeyed";
|
|
|
+ if (!isCursorAtEnd || ignoreEvent) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ query = this.inputView.getQuery();
|
|
|
+ hint = this.inputView.getHintValue();
|
|
|
+ if (hint !== "" && query !== hint) {
|
|
|
+ suggestion = this.dropdownView.getFirstSuggestion();
|
|
|
+ this.inputView.setInputValue(suggestion.value);
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _propagateEvent: function(e) {
|
|
|
+ this.eventBus.trigger(e.type);
|
|
|
+ },
|
|
|
+ destroy: function() {
|
|
|
+ this.inputView.destroy();
|
|
|
+ this.dropdownView.destroy();
|
|
|
+ destroyDomStructure(this.$node);
|
|
|
+ this.$node = null;
|
|
|
+ }
|
|
|
+ });
|
|
|
+ return TypeaheadView;
|
|
|
+ function buildDomStructure(input) {
|
|
|
+ var $wrapper = $(html.wrapper), $dropdown = $(html.dropdown), $input = $(input), $hint = $(html.hint);
|
|
|
+ $wrapper = $wrapper.css(css.wrapper);
|
|
|
+ $dropdown = $dropdown.css(css.dropdown);
|
|
|
+ $hint.css(css.hint).css({
|
|
|
+ backgroundAttachment: $input.css("background-attachment"),
|
|
|
+ backgroundClip: $input.css("background-clip"),
|
|
|
+ backgroundColor: $input.css("background-color"),
|
|
|
+ backgroundImage: $input.css("background-image"),
|
|
|
+ backgroundOrigin: $input.css("background-origin"),
|
|
|
+ backgroundPosition: $input.css("background-position"),
|
|
|
+ backgroundRepeat: $input.css("background-repeat"),
|
|
|
+ backgroundSize: $input.css("background-size")
|
|
|
+ });
|
|
|
+ $input.data("ttAttrs", {
|
|
|
+ dir: $input.attr("dir"),
|
|
|
+ autocomplete: $input.attr("autocomplete"),
|
|
|
+ spellcheck: $input.attr("spellcheck"),
|
|
|
+ style: $input.attr("style")
|
|
|
+ });
|
|
|
+ $input.addClass("tt-query").attr({
|
|
|
+ autocomplete: "off",
|
|
|
+ spellcheck: false
|
|
|
+ }).css(css.query);
|
|
|
+ try {
|
|
|
+ !$input.attr("dir") && $input.attr("dir", "auto");
|
|
|
+ } catch (e) {}
|
|
|
+ return $input.wrap($wrapper).parent().prepend($hint).append($dropdown);
|
|
|
+ }
|
|
|
+ function destroyDomStructure($node) {
|
|
|
+ var $input = $node.find(".tt-query");
|
|
|
+ utils.each($input.data("ttAttrs"), function(key, val) {
|
|
|
+ utils.isUndefined(val) ? $input.removeAttr(key) : $input.attr(key, val);
|
|
|
+ });
|
|
|
+ $input.detach().removeData("ttAttrs").removeClass("tt-query").insertAfter($node);
|
|
|
+ $node.remove();
|
|
|
+ }
|
|
|
+ }();
|
|
|
+ (function() {
|
|
|
+ var cache = {}, viewKey = "ttView", methods;
|
|
|
+ methods = {
|
|
|
+ initialize: function(datasetDefs) {
|
|
|
+ var datasets;
|
|
|
+ datasetDefs = utils.isArray(datasetDefs) ? datasetDefs : [ datasetDefs ];
|
|
|
+ if (this.length === 0) {
|
|
|
+ $.error("typeahead initialized without DOM element");
|
|
|
+ }
|
|
|
+ if (datasetDefs.length === 0) {
|
|
|
+ $.error("no datasets provided");
|
|
|
+ }
|
|
|
+ datasets = utils.map(datasetDefs, function(o) {
|
|
|
+ var dataset = cache[o.name] ? cache[o.name] : new Dataset(o);
|
|
|
+ if (o.name) {
|
|
|
+ cache[o.name] = dataset;
|
|
|
+ }
|
|
|
+ return dataset;
|
|
|
+ });
|
|
|
+ return this.each(initialize);
|
|
|
+ function initialize() {
|
|
|
+ var $input = $(this), deferreds, eventBus = new EventBus({
|
|
|
+ el: $input
|
|
|
+ });
|
|
|
+ deferreds = utils.map(datasets, function(dataset) {
|
|
|
+ return dataset.initialize();
|
|
|
+ });
|
|
|
+ $input.data(viewKey, new TypeaheadView({
|
|
|
+ input: $input,
|
|
|
+ eventBus: eventBus = new EventBus({
|
|
|
+ el: $input
|
|
|
+ }),
|
|
|
+ datasets: datasets
|
|
|
+ }));
|
|
|
+ $.when.apply($, deferreds).always(function() {
|
|
|
+ utils.defer(function() {
|
|
|
+ eventBus.trigger("initialized");
|
|
|
+ });
|
|
|
+ });
|
|
|
+ }
|
|
|
+ },
|
|
|
+ destroy: function() {
|
|
|
+ this.each(function() {
|
|
|
+ var $this = $(this), view = $this.data(viewKey);
|
|
|
+ if (view) {
|
|
|
+ view.destroy();
|
|
|
+ $this.removeData(viewKey);
|
|
|
+ }
|
|
|
+ });
|
|
|
+ }
|
|
|
+ };
|
|
|
+ jQuery.fn.typeahead = function(method) {
|
|
|
+ if (methods[method]) {
|
|
|
+ return methods[method].apply(this, [].slice.call(arguments, 1));
|
|
|
+ } else {
|
|
|
+ return methods.initialize.apply(this, arguments);
|
|
|
+ }
|
|
|
+ };
|
|
|
+ })();
|
|
|
+})(window.jQuery);
|
