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From hls...@apache.org
Subject [2/3] git commit: Rebuild the Autocomplete mixin around Twitter Typeahead
Date Fri, 23 Aug 2013 23:02:16 GMT
Rebuild the Autocomplete mixin around Twitter Typeahead


Project: http://git-wip-us.apache.org/repos/asf/tapestry-5/repo
Commit: http://git-wip-us.apache.org/repos/asf/tapestry-5/commit/206e25de
Tree: http://git-wip-us.apache.org/repos/asf/tapestry-5/tree/206e25de
Diff: http://git-wip-us.apache.org/repos/asf/tapestry-5/diff/206e25de

Branch: refs/heads/master
Commit: 206e25de446073ea36cf9cc883095fb05e1f071f
Parents: e5e5bcb
Author: Howard M. Lewis Ship <hlship@apache.org>
Authored: Fri Aug 23 15:57:45 2013 -0700
Committer: Howard M. Lewis Ship <hlship@apache.org>
Committed: Fri Aug 23 15:57:45 2013 -0700

----------------------------------------------------------------------
 .../modules/t5/core/autocomplete.coffee         |   23 +-
 .../tapestry5/corelib/mixins/Autocomplete.java  |   17 +-
 .../tapestry5/modules/JavaScriptModule.java     |    6 +
 .../META-INF/assets/core/Autocomplete.css       |   56 +
 .../assets/tapestry5/typeahead-0.9.3.js         | 1139 ++++++++++++++++++
 5 files changed, 1212 insertions(+), 29 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/tapestry-5/blob/206e25de/tapestry-core/src/main/coffeescript/META-INF/modules/t5/core/autocomplete.coffee
----------------------------------------------------------------------
diff --git a/tapestry-core/src/main/coffeescript/META-INF/modules/t5/core/autocomplete.coffee b/tapestry-core/src/main/coffeescript/META-INF/modules/t5/core/autocomplete.coffee
index c86df25..7dbb2da 100644
--- a/tapestry-core/src/main/coffeescript/META-INF/modules/t5/core/autocomplete.coffee
+++ b/tapestry-core/src/main/coffeescript/META-INF/modules/t5/core/autocomplete.coffee
@@ -15,28 +15,17 @@
 # ## t5/core/autocomplete
 #
 # Support for the core/Autocomplete Tapestry mixin.
-define ["./dom", "./ajax", "jquery", "bootstrap"],
-  (dom, ajax, $) ->
-
-    doLookup = ($field, url, query, process) ->
-      $field.addClass "ajax-wait"
-
-      ajax url,
-        data:
-          "t:input": query
-        success: (response) ->
-          $field.removeClass "ajax-wait"
-
-          process response.json.matches
+define ["./dom", "./ajax", "jquery", "./utils", "./typeahead"],
+  (dom, ajax, $, {extendURL}) ->
 
     init = (spec) ->
       $field = $ document.getElementById spec.id
 
       $field.typeahead
         minLength: spec.minChars
-        source: (query, process) ->
-          doLookup $field, spec.url, query, process
-          return
-
+        remote:
+          url: spec.url
+          replace: (uri, query) -> extendURL uri, "t:input": query
+          filter: (response) -> response.matches
 
     exports = init

http://git-wip-us.apache.org/repos/asf/tapestry-5/blob/206e25de/tapestry-core/src/main/java/org/apache/tapestry5/corelib/mixins/Autocomplete.java
----------------------------------------------------------------------
diff --git a/tapestry-core/src/main/java/org/apache/tapestry5/corelib/mixins/Autocomplete.java b/tapestry-core/src/main/java/org/apache/tapestry5/corelib/mixins/Autocomplete.java
index b1a1278..bebf85d 100644
--- a/tapestry-core/src/main/java/org/apache/tapestry5/corelib/mixins/Autocomplete.java
+++ b/tapestry-core/src/main/java/org/apache/tapestry5/corelib/mixins/Autocomplete.java
@@ -1,4 +1,4 @@
-// Copyright 2007, 2008, 2009, 2010, 2011, 2012 The Apache Software Foundation
+// Copyright 2007-2013 The Apache Software Foundation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -28,20 +28,12 @@ import java.util.Collections;
 import java.util.List;
 
 /**
- * A mixin for a text field that allows for autocompletion of text fields. This is based on Prototype's autocompleter
- * control.
- * <p/>
- * The mixin renders an (initially invisible) progress indicator after the field (it will also be after the error icon
- * most fields render). The progress indicator is made visible during the request to the server. The mixin then renders
- * a &lt;div&gt; that will be filled in on the client side with dynamically obtained selections.
- * <p/>
- * Multiple selection on the client is enabled by binding the tokens parameter (however, the mixin doesn't help split
- * multiple selections up on the server, that is still your code's responsibility).
+ * A mixin for a text field that allows for autocompletion of text fields. This is based on
+ * Twttter <a href="http://twitter.github.io/typeahead.js/">typeahead.js</a> version 0.9.3.
  * <p/>
  * The container is responsible for providing an event handler for event "providecompletions". The context will be the
  * partial input string sent from the client. The return value should be an array or list of completions, in
- * presentation order. I.e.
- * <p/>
+ * presentation order. e.g.
  * <p/>
  * <pre>
  * String[] onProvideCompletionsFromMyField(String input)
@@ -110,6 +102,7 @@ public class Autocomplete
         writer.attributes("autocomplete", "off");
     }
 
+    @Import(stylesheet="Autocomplete.css")
     void afterRender()
     {
         Link link = resources.createEventLink(EVENT_NAME);

http://git-wip-us.apache.org/repos/asf/tapestry-5/blob/206e25de/tapestry-core/src/main/java/org/apache/tapestry5/modules/JavaScriptModule.java
----------------------------------------------------------------------
diff --git a/tapestry-core/src/main/java/org/apache/tapestry5/modules/JavaScriptModule.java b/tapestry-core/src/main/java/org/apache/tapestry5/modules/JavaScriptModule.java
index 6807f4f..79ca7d9 100644
--- a/tapestry-core/src/main/java/org/apache/tapestry5/modules/JavaScriptModule.java
+++ b/tapestry-core/src/main/java/org/apache/tapestry5/modules/JavaScriptModule.java
@@ -233,6 +233,9 @@ public class JavaScriptModule
                                         @Path("${tapestry.asset.root}/jquery-1.9.1.js")
                                         Resource jQuery,
 
+                                        @Path("${tapestry.asset.root}/typeahead-0.9.3.js")
+                                        Resource typeahead,
+
                                         @Path("${" + SymbolConstants.BOOTSTRAP_ROOT + "}/js/transition.js")
                                         Resource transition)
     {
@@ -256,6 +259,9 @@ public class JavaScriptModule
         Resource popover = transition.forFile("popover.js");
 
         configuration.add("bootstrap-popover", new JavaScriptModuleConfiguration(popover).dependsOn("bootstrap-tooltip"));
+
+        configuration.add("t5/core/typeahead", new JavaScriptModuleConfiguration(typeahead).dependsOn("jquery"));
+
     }
 
     @Contribute(SymbolProvider.class)

http://git-wip-us.apache.org/repos/asf/tapestry-5/blob/206e25de/tapestry-core/src/main/resources/META-INF/assets/core/Autocomplete.css
----------------------------------------------------------------------
diff --git a/tapestry-core/src/main/resources/META-INF/assets/core/Autocomplete.css b/tapestry-core/src/main/resources/META-INF/assets/core/Autocomplete.css
new file mode 100644
index 0000000..684e6b4
--- /dev/null
+++ b/tapestry-core/src/main/resources/META-INF/assets/core/Autocomplete.css
@@ -0,0 +1,56 @@
+/** From https://gist.github.com/bhays/6140058, and modified */
+
+.twitter-typeahead .tt-query,
+.twitter-typeahead .tt-hint {
+    margin-bottom: 0;
+}
+
+.tt-hint {
+    display: block;
+    width: 100%;
+    height: 34px;
+    padding: 6px 12px;
+    font-size: 14px;
+    line-height: 1.428571429;
+    color: #999;
+    vertical-align: middle;
+    background-color: #ffffff;
+    border: 1px solid #cccccc;
+    border-radius: 4px;
+    -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+    -webkit-transition: border-color ease-in-out 0.15s, box-shadow ease-in-out 0.15s;
+    transition: border-color ease-in-out 0.15s, box-shadow ease-in-out 0.15s;
+}
+
+.tt-dropdown-menu {
+    min-width: 160px;
+    margin-top: 2px;
+    padding: 5px 0;
+    background-color: #ffffff;
+    border: 1px solid #cccccc;
+    border: 1px solid rgba(0, 0, 0, 0.15);
+    border-radius: 4px;
+    -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
+    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
+    background-clip: padding-box;
+
+}
+
+.tt-suggestion {
+    display: block;
+    padding: 3px 20px;
+}
+
+.tt-suggestion.tt-is-under-cursor {
+    color: #fff;
+    background-color: #428bca;
+}
+
+.tt-suggestion.tt-is-under-cursor a {
+    color: #fff;
+}
+
+.tt-suggestion p {
+    margin: 0;
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/tapestry-5/blob/206e25de/tapestry-core/src/main/resources/META-INF/assets/tapestry5/typeahead-0.9.3.js
----------------------------------------------------------------------
diff --git a/tapestry-core/src/main/resources/META-INF/assets/tapestry5/typeahead-0.9.3.js b/tapestry-core/src/main/resources/META-INF/assets/tapestry5/typeahead-0.9.3.js
new file mode 100644
index 0000000..9365bd6
--- /dev/null
+++ b/tapestry-core/src/main/resources/META-INF/assets/tapestry5/typeahead-0.9.3.js
@@ -0,0 +1,1139 @@
+/*!
+ * typeahead.js 0.9.3
+ * https://github.com/twitter/typeahead
+ * Copyright 2013 Twitter, Inc. and other contributors; Licensed MIT
+ */
+
+(function($) {
+    var VERSION = "0.9.3";
+    var utils = {
+        isMsie: function() {
+            var match = /(msie) ([\w.]+)/i.exec(navigator.userAgent);
+            return match ? parseInt(match[2], 10) : false;
+        },
+        isBlankString: function(str) {
+            return !str || /^\s*$/.test(str);
+        },
+        escapeRegExChars: function(str) {
+            return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
+        },
+        isString: function(obj) {
+            return typeof obj === "string";
+        },
+        isNumber: function(obj) {
+            return typeof obj === "number";
+        },
+        isArray: $.isArray,
+        isFunction: $.isFunction,
+        isObject: $.isPlainObject,
+        isUndefined: function(obj) {
+            return typeof obj === "undefined";
+        },
+        bind: $.proxy,
+        bindAll: function(obj) {
+            var val;
+            for (var key in obj) {
+                $.isFunction(val = obj[key]) && (obj[key] = $.proxy(val, obj));
+            }
+        },
+        indexOf: function(haystack, needle) {
+            for (var i = 0; i < haystack.length; i++) {
+                if (haystack[i] === needle) {
+                    return i;
+                }
+            }
+            return -1;
+        },
+        each: $.each,
+        map: $.map,
+        filter: $.grep,
+        every: function(obj, test) {
+            var result = true;
+            if (!obj) {
+                return result;
+            }
+            $.each(obj, function(key, val) {
+                if (!(result = test.call(null, val, key, obj))) {
+                    return false;
+                }
+            });
+            return !!result;
+        },
+        some: function(obj, test) {
+            var result = false;
+            if (!obj) {
+                return result;
+            }
+            $.each(obj, function(key, val) {
+                if (result = test.call(null, val, key, obj)) {
+                    return false;
+                }
+            });
+            return !!result;
+        },
+        mixin: $.extend,
+        getUniqueId: function() {
+            var counter = 0;
+            return function() {
+                return counter++;
+            };
+        }(),
+        defer: function(fn) {
+            setTimeout(fn, 0);
+        },
+        debounce: function(func, wait, immediate) {
+            var timeout, result;
+            return function() {
+                var context = this, args = arguments, later, callNow;
+                later = function() {
+                    timeout = null;
+                    if (!immediate) {
+                        result = func.apply(context, args);
+                    }
+                };
+                callNow = immediate && !timeout;
+                clearTimeout(timeout);
+                timeout = setTimeout(later, wait);
+                if (callNow) {
+                    result = func.apply(context, args);
+                }
+                return result;
+            };
+        },
+        throttle: function(func, wait) {
+            var context, args, timeout, result, previous, later;
+            previous = 0;
+            later = function() {
+                previous = new Date();
+                timeout = null;
+                result = func.apply(context, args);
+            };
+            return function() {
+                var now = new Date(), remaining = wait - (now - previous);
+                context = this;
+                args = arguments;
+                if (remaining <= 0) {
+                    clearTimeout(timeout);
+                    timeout = null;
+                    previous = now;
+                    result = func.apply(context, args);
+                } else if (!timeout) {
+                    timeout = setTimeout(later, remaining);
+                }
+                return result;
+            };
+        },
+        tokenizeQuery: function(str) {
+            return $.trim(str).toLowerCase().split(/[\s]+/);
+        },
+        tokenizeText: function(str) {
+            return $.trim(str).toLowerCase().split(/[\s\-_]+/);
+        },
+        getProtocol: function() {
+            return location.protocol;
+        },
+        noop: function() {}
+    };
+    var EventTarget = function() {
+        var eventSplitter = /\s+/;
+        return {
+            on: function(events, callback) {
+                var event;
+                if (!callback) {
+                    return this;
+                }
+                this._callbacks = this._callbacks || {};
+                events = events.split(eventSplitter);
+                while (event = events.shift()) {
+                    this._callbacks[event] = this._callbacks[event] || [];
+                    this._callbacks[event].push(callback);
+                }
+                return this;
+            },
+            trigger: function(events, data) {
+                var event, callbacks;
+                if (!this._callbacks) {
+                    return this;
+                }
+                events = events.split(eventSplitter);
+                while (event = events.shift()) {
+                    if (callbacks = this._callbacks[event]) {
+                        for (var i = 0; i < callbacks.length; i += 1) {
+                            callbacks[i].call(this, {
+                                type: event,
+                                data: data
+                            });
+                        }
+                    }
+                }
+                return this;
+            }
+        };
+    }();
+    var EventBus = function() {
+        var namespace = "typeahead:";
+        function EventBus(o) {
+            if (!o || !o.el) {
+                $.error("EventBus initialized without el");
+            }
+            this.$el = $(o.el);
+        }
+        utils.mixin(EventBus.prototype, {
+            trigger: function(type) {
+                var args = [].slice.call(arguments, 1);
+                this.$el.trigger(namespace + type, args);
+            }
+        });
+        return EventBus;
+    }();
+    var PersistentStorage = function() {
+        var ls, methods;
+        try {
+            ls = window.localStorage;
+            ls.setItem("~~~", "!");
+            ls.removeItem("~~~");
+        } catch (err) {
+            ls = null;
+        }
+        function PersistentStorage(namespace) {
+            this.prefix = [ "__", namespace, "__" ].join("");
+            this.ttlKey = "__ttl__";
+            this.keyMatcher = new RegExp("^" + this.prefix);
+        }
+        if (ls && window.JSON) {
+            methods = {
+                _prefix: function(key) {
+                    return this.prefix + key;
+                },
+                _ttlKey: function(key) {
+                    return this._prefix(key) + this.ttlKey;
+                },
+                get: function(key) {
+                    if (this.isExpired(key)) {
+                        this.remove(key);
+                    }
+                    return decode(ls.getItem(this._prefix(key)));
+                },
+                set: function(key, val, ttl) {
+                    if (utils.isNumber(ttl)) {
+                        ls.setItem(this._ttlKey(key), encode(now() + ttl));
+                    } else {
+                        ls.removeItem(this._ttlKey(key));
+                    }
+                    return ls.setItem(this._prefix(key), encode(val));
+                },
+                remove: function(key) {
+                    ls.removeItem(this._ttlKey(key));
+                    ls.removeItem(this._prefix(key));
+                    return this;
+                },
+                clear: function() {
+                    var i, key, keys = [], len = ls.length;
+                    for (i = 0; i < len; i++) {
+                        if ((key = ls.key(i)).match(this.keyMatcher)) {
+                            keys.push(key.replace(this.keyMatcher, ""));
+                        }
+                    }
+                    for (i = keys.length; i--; ) {
+                        this.remove(keys[i]);
+                    }
+                    return this;
+                },
+                isExpired: function(key) {
+                    var ttl = decode(ls.getItem(this._ttlKey(key)));
+                    return utils.isNumber(ttl) && now() > ttl ? true : false;
+                }
+            };
+        } else {
+            methods = {
+                get: utils.noop,
+                set: utils.noop,
+                remove: utils.noop,
+                clear: utils.noop,
+                isExpired: utils.noop
+            };
+        }
+        utils.mixin(PersistentStorage.prototype, methods);
+        return PersistentStorage;
+        function now() {
+            return new Date().getTime();
+        }
+        function encode(val) {
+            return JSON.stringify(utils.isUndefined(val) ? null : val);
+        }
+        function decode(val) {
+            return JSON.parse(val);
+        }
+    }();
+    var RequestCache = function() {
+        function RequestCache(o) {
+            utils.bindAll(this);
+            o = o || {};
+            this.sizeLimit = o.sizeLimit || 10;
+            this.cache = {};
+            this.cachedKeysByAge = [];
+        }
+        utils.mixin(RequestCache.prototype, {
+            get: function(url) {
+                return this.cache[url];
+            },
+            set: function(url, resp) {
+                var requestToEvict;
+                if (this.cachedKeysByAge.length === this.sizeLimit) {
+                    requestToEvict = this.cachedKeysByAge.shift();
+                    delete this.cache[requestToEvict];
+                }
+                this.cache[url] = resp;
+                this.cachedKeysByAge.push(url);
+            }
+        });
+        return RequestCache;
+    }();
+    var Transport = function() {
+        var pendingRequestsCount = 0, pendingRequests = {}, maxPendingRequests, requestCache;
+        function Transport(o) {
+            utils.bindAll(this);
+            o = utils.isString(o) ? {
+                url: o
+            } : o;
+            requestCache = requestCache || new RequestCache();
+            maxPendingRequests = utils.isNumber(o.maxParallelRequests) ? o.maxParallelRequests : maxPendingRequests || 6;
+            this.url = o.url;
+            this.wildcard = o.wildcard || "%QUERY";
+            this.filter = o.filter;
+            this.replace = o.replace;
+            this.ajaxSettings = {
+                type: "get",
+                cache: o.cache,
+                timeout: o.timeout,
+                dataType: o.dataType || "json",
+                beforeSend: o.beforeSend
+            };
+            this._get = (/^throttle$/i.test(o.rateLimitFn) ? utils.throttle : utils.debounce)(this._get, o.rateLimitWait || 300);
+        }
+        utils.mixin(Transport.prototype, {
+            _get: function(url, cb) {
+                var that = this;
+                if (belowPendingRequestsThreshold()) {
+                    this._sendRequest(url).done(done);
+                } else {
+                    this.onDeckRequestArgs = [].slice.call(arguments, 0);
+                }
+                function done(resp) {
+                    var data = that.filter ? that.filter(resp) : resp;
+                    cb && cb(data);
+                    requestCache.set(url, resp);
+                }
+            },
+            _sendRequest: function(url) {
+                var that = this, jqXhr = pendingRequests[url];
+                if (!jqXhr) {
+                    incrementPendingRequests();
+                    jqXhr = pendingRequests[url] = $.ajax(url, this.ajaxSettings).always(always);
+                }
+                return jqXhr;
+                function always() {
+                    decrementPendingRequests();
+                    pendingRequests[url] = null;
+                    if (that.onDeckRequestArgs) {
+                        that._get.apply(that, that.onDeckRequestArgs);
+                        that.onDeckRequestArgs = null;
+                    }
+                }
+            },
+            get: function(query, cb) {
+                var that = this, encodedQuery = encodeURIComponent(query || ""), url, resp;
+                cb = cb || utils.noop;
+                url = this.replace ? this.replace(this.url, encodedQuery) : this.url.replace(this.wildcard, encodedQuery);
+                if (resp = requestCache.get(url)) {
+                    utils.defer(function() {
+                        cb(that.filter ? that.filter(resp) : resp);
+                    });
+                } else {
+                    this._get(url, cb);
+                }
+                return !!resp;
+            }
+        });
+        return Transport;
+        function incrementPendingRequests() {
+            pendingRequestsCount++;
+        }
+        function decrementPendingRequests() {
+            pendingRequestsCount--;
+        }
+        function belowPendingRequestsThreshold() {
+            return pendingRequestsCount < maxPendingRequests;
+        }
+    }();
+    var Dataset = function() {
+        var keys = {
+            thumbprint: "thumbprint",
+            protocol: "protocol",
+            itemHash: "itemHash",
+            adjacencyList: "adjacencyList"
+        };
+        function Dataset(o) {
+            utils.bindAll(this);
+            if (utils.isString(o.template) && !o.engine) {
+                $.error("no template engine specified");
+            }
+            if (!o.local && !o.prefetch && !o.remote) {
+                $.error("one of local, prefetch, or remote is required");
+            }
+            this.name = o.name || utils.getUniqueId();
+            this.limit = o.limit || 5;
+            this.minLength = o.minLength || 1;
+            this.header = o.header;
+            this.footer = o.footer;
+            this.valueKey = o.valueKey || "value";
+            this.template = compileTemplate(o.template, o.engine, this.valueKey);
+            this.local = o.local;
+            this.prefetch = o.prefetch;
+            this.remote = o.remote;
+            this.itemHash = {};
+            this.adjacencyList = {};
+            this.storage = o.name ? new PersistentStorage(o.name) : null;
+        }
+        utils.mixin(Dataset.prototype, {
+            _processLocalData: function(data) {
+                this._mergeProcessedData(this._processData(data));
+            },
+            _loadPrefetchData: function(o) {
+                var that = this, thumbprint = VERSION + (o.thumbprint || ""), storedThumbprint, storedProtocol, storedItemHash, storedAdjacencyList, isExpired, deferred;
+                if (this.storage) {
+                    storedThumbprint = this.storage.get(keys.thumbprint);
+                    storedProtocol = this.storage.get(keys.protocol);
+                    storedItemHash = this.storage.get(keys.itemHash);
+                    storedAdjacencyList = this.storage.get(keys.adjacencyList);
+                }
+                isExpired = storedThumbprint !== thumbprint || storedProtocol !== utils.getProtocol();
+                o = utils.isString(o) ? {
+                    url: o
+                } : o;
+                o.ttl = utils.isNumber(o.ttl) ? o.ttl : 24 * 60 * 60 * 1e3;
+                if (storedItemHash && storedAdjacencyList && !isExpired) {
+                    this._mergeProcessedData({
+                        itemHash: storedItemHash,
+                        adjacencyList: storedAdjacencyList
+                    });
+                    deferred = $.Deferred().resolve();
+                } else {
+                    deferred = $.getJSON(o.url).done(processPrefetchData);
+                }
+                return deferred;
+                function processPrefetchData(data) {
+                    var filteredData = o.filter ? o.filter(data) : data, processedData = that._processData(filteredData), itemHash = processedData.itemHash, adjacencyList = processedData.adjacencyList;
+                    if (that.storage) {
+                        that.storage.set(keys.itemHash, itemHash, o.ttl);
+                        that.storage.set(keys.adjacencyList, adjacencyList, o.ttl);
+                        that.storage.set(keys.thumbprint, thumbprint, o.ttl);
+                        that.storage.set(keys.protocol, utils.getProtocol(), o.ttl);
+                    }
+                    that._mergeProcessedData(processedData);
+                }
+            },
+            _transformDatum: function(datum) {
+                var value = utils.isString(datum) ? datum : datum[this.valueKey], tokens = datum.tokens || utils.tokenizeText(value), item = {
+                    value: value,
+                    tokens: tokens
+                };
+                if (utils.isString(datum)) {
+                    item.datum = {};
+                    item.datum[this.valueKey] = datum;
+                } 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, suggestions, cacheHit = false;
+                if (query.length < this.minLength) {
+                    return;
+                }
+                terms = utils.tokenizeQuery(query);
+                suggestions = this._getLocalSuggestions(terms).slice(0, this.limit);
+                if (suggestions.length < this.limit && this.transport) {
+                    cacheHit = this.transport.get(query, processRemoteData);
+                }
+                !cacheHit && cb && cb(suggestions);
+                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 renderFn, compiledTemplate;
+            if (utils.isFunction(template)) {
+                renderFn = template;
+            } else if (utils.isString(template)) {
+                compiledTemplate = engine.compile(template);
+                renderFn = utils.bind(compiledTemplate.render, compiledTemplate);
+            } else {
+                renderFn = function(context) {
+                    return "<p>" + context[valueKey] + "</p>";
+                };
+            }
+            return renderFn;
+        }
+    }();
+    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;
+            },
+            setQuery: function(query) {
+                this.query = query;
+            },
+            getInputValue: function() {
+                return this.$input.val();
+            },
+            setInputValue: function(value, silent) {
+                this.$input.val(value);
+                !silent && 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 = $suggestions.eq(nextIndex).addClass("tt-is-under-cursor");
+                this._ensureVisibility($underCursor);
+                this.trigger("cursorMoved", extractSuggestion($underCursor));
+            },
+            _getSuggestions: function() {
+                return this.$menu.find(".tt-suggestions > .tt-suggestion");
+            },
+            _ensureVisibility: function($el) {
+                var menuHeight = this.$menu.height() + parseInt(this.$menu.css("paddingTop"), 10) + parseInt(this.$menu.css("paddingBottom"), 10), menuScrollTop = this.$menu.scrollTop(), elTop = $el.position().top, elBottom = elTop + $el.outerHeight(true);
+                if (elTop < 0) {
+                    this.$menu.scrollTop(menuScrollTop + elTop);
+                } else if (menuHeight < elBottom) {
+                    this.$menu.scrollTop(menuScrollTop + (elBottom - menuHeight));
+                }
+            },
+            destroy: function() {
+                this.$menu.off(".tt");
+                this.$menu = null;
+            },
+            isVisible: function() {
+                return this.isOpen && !this.isEmpty;
+            },
+            closeUnlessMouseIsOverDropdown: function() {
+                if (!this.isMouseOverDropdown) {
+                    this.close();
+                }
+            },
+            close: function() {
+                if (this.isOpen) {
+                    this.isOpen = false;
+                    this.isMouseOverDropdown = false;
+                    this._hide();
+                    this.$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, wrapper = '<div class="tt-suggestion">%body</div>', compiledHtml, $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) {
+                        suggestion.dataset = dataset.name;
+                        compiledHtml = dataset.template(suggestion.datum);
+                        elBuilder.innerHTML = wrapper.replace("%body", compiledHtml);
+                        $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 tabKeyed", 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, suggestion.dataset);
+                }
+            },
+            _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);
+                    this.eventBus.trigger("autocompleted", suggestion.datum, suggestion.dataset);
+                }
+            },
+            _propagateEvent: function(e) {
+                this.eventBus.trigger(e.type);
+            },
+            destroy: function() {
+                this.inputView.destroy();
+                this.dropdownView.destroy();
+                destroyDomStructure(this.$node);
+                this.$node = null;
+            },
+            setQuery: function(query) {
+                this.inputView.setQuery(query);
+                this.inputView.setInputValue(query);
+                this._clearHint();
+                this._clearSuggestions();
+                this._getSuggestions();
+            }
+        });
+        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 (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() {
+                return this.each(destroy);
+                function destroy() {
+                    var $this = $(this), view = $this.data(viewKey);
+                    if (view) {
+                        view.destroy();
+                        $this.removeData(viewKey);
+                    }
+                }
+            },
+            setQuery: function(query) {
+                return this.each(setQuery);
+                function setQuery() {
+                    var view = $(this).data(viewKey);
+                    view && view.setQuery(query);
+                }
+            }
+        };
+        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);
\ No newline at end of file


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