]> source.dussan.org Git - jquery-ui.git/commitdiff
Autocomplete: Move autocomplete into widgets folder
authorAlexander Schmitz <arschmitz@gmail.com>
Wed, 15 Jul 2015 01:56:36 +0000 (21:56 -0400)
committerAlexander Schmitz <arschmitz@gmail.com>
Sat, 8 Aug 2015 04:29:37 +0000 (00:29 -0400)
Ref #13885

demos/bootstrap.js
tests/unit/autocomplete/common.js
tests/unit/autocomplete/core.js
tests/unit/autocomplete/events.js
tests/unit/autocomplete/methods.js
tests/unit/autocomplete/options.js
ui/autocomplete.js [deleted file]
ui/widgets/autocomplete.js [new file with mode: 0644]

index af9aee13098a7105eeb383cbb8e6d5c97d912a2d..71d2e4ef38af7069e3b504e0bedb2539c925e813 100644 (file)
@@ -25,7 +25,8 @@ var effectsAll = [
        "effect-slide"
 ];
 var widgets = [
-       "accordion"
+       "accordion",
+       "autocomplete"
 ];
 
 function getPath( module ) {
index 5ee7cdda0efa857c5b4e9e87d5c62b7e8157affb..94e98048dcf8fb62c8b071d25c4d3b0da9119041 100644 (file)
@@ -1,6 +1,6 @@
 define( [
        "lib/common",
-       "ui/autocomplete"
+       "ui/widgets/autocomplete"
 ], function( common ) {
 
 common.testWidget( "autocomplete", {
index 184bcdbf423df504e0d004c3edf1c0aaaf625e35..d57f2a980cf51b356bfadaa42ea7bdff70c8af2c 100644 (file)
@@ -1,6 +1,6 @@
 define( [
        "jquery",
-       "ui/autocomplete"
+       "ui/widgets/autocomplete"
 ], function( $ ) {
 
 module( "autocomplete: core" );
index 8f96fb77f1ddba089088d156b31633f64dfecc7c..59d5dd5400f27e1d2db05dbd86bc8be783749c66 100644 (file)
@@ -1,6 +1,6 @@
 define( [
        "jquery",
-       "ui/autocomplete"
+       "ui/widgets/autocomplete"
 ], function( $ ) {
 
 module( "autocomplete: events" );
index 32080207add7cfd86465d41f4c3c7c913c83d0ba..f614c13cd7aa39c5d958447abeb499b5d31d1777 100644 (file)
@@ -1,6 +1,6 @@
 define( [
        "jquery",
-       "ui/autocomplete"
+       "ui/widgets/autocomplete"
 ], function( $ ) {
 
 module( "autocomplete: methods" );
index 06c75722b32d905d6d543cfc5f0382ff58dc8fd6..7d281fb316c083dc8cde94832d7d17a0f2246f0a 100644 (file)
@@ -1,6 +1,6 @@
 define( [
        "jquery",
-       "ui/autocomplete"
+       "ui/widgets/autocomplete"
 ], function( $ ) {
 
 module( "autocomplete: options" );
diff --git a/ui/autocomplete.js b/ui/autocomplete.js
deleted file mode 100644 (file)
index cf95b23..0000000
+++ /dev/null
@@ -1,646 +0,0 @@
-/*!
- * jQuery UI Autocomplete @VERSION
- * http://jqueryui.com
- *
- * Copyright jQuery Foundation and other contributors
- * Released under the MIT license.
- * http://jquery.org/license
- */
-
-//>>label: Autocomplete
-//>>group: Widgets
-//>>description: Lists suggested words as the user is typing.
-//>>docs: http://api.jqueryui.com/autocomplete/
-//>>demos: http://jqueryui.com/autocomplete/
-//>>css.structure: ../themes/base/core.css
-//>>css.structure: ../themes/base/autocomplete.css
-//>>css.theme: ../themes/base/theme.css
-
-( function( factory ) {
-       if ( typeof define === "function" && define.amd ) {
-
-               // AMD. Register as an anonymous module.
-               define( [
-                       "jquery",
-                       "./core",
-                       "./version",
-                       "./keycode",
-                       "./widget",
-                       "./position",
-                       "./menu",
-                       "./safe-active-element"
-               ], factory );
-       } else {
-
-               // Browser globals
-               factory( jQuery );
-       }
-}( function( $ ) {
-
-$.widget( "ui.autocomplete", {
-       version: "@VERSION",
-       defaultElement: "<input>",
-       options: {
-               appendTo: null,
-               autoFocus: false,
-               delay: 300,
-               minLength: 1,
-               position: {
-                       my: "left top",
-                       at: "left bottom",
-                       collision: "none"
-               },
-               source: null,
-
-               // callbacks
-               change: null,
-               close: null,
-               focus: null,
-               open: null,
-               response: null,
-               search: null,
-               select: null
-       },
-
-       requestIndex: 0,
-       pending: 0,
-
-       _create: function() {
-               // Some browsers only repeat keydown events, not keypress events,
-               // so we use the suppressKeyPress flag to determine if we've already
-               // handled the keydown event. #7269
-               // Unfortunately the code for & in keypress is the same as the up arrow,
-               // so we use the suppressKeyPressRepeat flag to avoid handling keypress
-               // events when we know the keydown event was used to modify the
-               // search term. #7799
-               var suppressKeyPress, suppressKeyPressRepeat, suppressInput,
-                       nodeName = this.element[ 0 ].nodeName.toLowerCase(),
-                       isTextarea = nodeName === "textarea",
-                       isInput = nodeName === "input";
-
-               // Textareas are always multi-line
-               // Inputs are always single-line, even if inside a contentEditable element
-               // IE also treats inputs as contentEditable
-               // All other element types are determined by whether or not they're contentEditable
-               this.isMultiLine = isTextarea || !isInput && this.element.prop( "isContentEditable" );
-
-               this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
-               this.isNewMenu = true;
-
-               this._addClass( "ui-autocomplete-input" );
-               this.element.attr( "autocomplete", "off" );
-
-               this._on( this.element, {
-                       keydown: function( event ) {
-                               if ( this.element.prop( "readOnly" ) ) {
-                                       suppressKeyPress = true;
-                                       suppressInput = true;
-                                       suppressKeyPressRepeat = true;
-                                       return;
-                               }
-
-                               suppressKeyPress = false;
-                               suppressInput = false;
-                               suppressKeyPressRepeat = false;
-                               var keyCode = $.ui.keyCode;
-                               switch ( event.keyCode ) {
-                               case keyCode.PAGE_UP:
-                                       suppressKeyPress = true;
-                                       this._move( "previousPage", event );
-                                       break;
-                               case keyCode.PAGE_DOWN:
-                                       suppressKeyPress = true;
-                                       this._move( "nextPage", event );
-                                       break;
-                               case keyCode.UP:
-                                       suppressKeyPress = true;
-                                       this._keyEvent( "previous", event );
-                                       break;
-                               case keyCode.DOWN:
-                                       suppressKeyPress = true;
-                                       this._keyEvent( "next", event );
-                                       break;
-                               case keyCode.ENTER:
-                                       // when menu is open and has focus
-                                       if ( this.menu.active ) {
-                                               // #6055 - Opera still allows the keypress to occur
-                                               // which causes forms to submit
-                                               suppressKeyPress = true;
-                                               event.preventDefault();
-                                               this.menu.select( event );
-                                       }
-                                       break;
-                               case keyCode.TAB:
-                                       if ( this.menu.active ) {
-                                               this.menu.select( event );
-                                       }
-                                       break;
-                               case keyCode.ESCAPE:
-                                       if ( this.menu.element.is( ":visible" ) ) {
-                                               if ( !this.isMultiLine ) {
-                                                       this._value( this.term );
-                                               }
-                                               this.close( event );
-                                               // Different browsers have different default behavior for escape
-                                               // Single press can mean undo or clear
-                                               // Double press in IE means clear the whole form
-                                               event.preventDefault();
-                                       }
-                                       break;
-                               default:
-                                       suppressKeyPressRepeat = true;
-                                       // search timeout should be triggered before the input value is changed
-                                       this._searchTimeout( event );
-                                       break;
-                               }
-                       },
-                       keypress: function( event ) {
-                               if ( suppressKeyPress ) {
-                                       suppressKeyPress = false;
-                                       if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
-                                               event.preventDefault();
-                                       }
-                                       return;
-                               }
-                               if ( suppressKeyPressRepeat ) {
-                                       return;
-                               }
-
-                               // replicate some key handlers to allow them to repeat in Firefox and Opera
-                               var keyCode = $.ui.keyCode;
-                               switch ( event.keyCode ) {
-                               case keyCode.PAGE_UP:
-                                       this._move( "previousPage", event );
-                                       break;
-                               case keyCode.PAGE_DOWN:
-                                       this._move( "nextPage", event );
-                                       break;
-                               case keyCode.UP:
-                                       this._keyEvent( "previous", event );
-                                       break;
-                               case keyCode.DOWN:
-                                       this._keyEvent( "next", event );
-                                       break;
-                               }
-                       },
-                       input: function( event ) {
-                               if ( suppressInput ) {
-                                       suppressInput = false;
-                                       event.preventDefault();
-                                       return;
-                               }
-                               this._searchTimeout( event );
-                       },
-                       focus: function() {
-                               this.selectedItem = null;
-                               this.previous = this._value();
-                       },
-                       blur: function( event ) {
-                               if ( this.cancelBlur ) {
-                                       delete this.cancelBlur;
-                                       return;
-                               }
-
-                               clearTimeout( this.searching );
-                               this.close( event );
-                               this._change( event );
-                       }
-               } );
-
-               this._initSource();
-               this.menu = $( "<ul>" )
-                       .appendTo( this._appendTo() )
-                       .menu( {
-                               // disable ARIA support, the live region takes care of that
-                               role: null
-                       } )
-                       .hide()
-                       .menu( "instance" );
-
-               this._addClass( this.menu.element, "ui-autocomplete", "ui-front" );
-               this._on( this.menu.element, {
-                       mousedown: function( event ) {
-                               // prevent moving focus out of the text field
-                               event.preventDefault();
-
-                               // IE doesn't prevent moving focus even with event.preventDefault()
-                               // so we set a flag to know when we should ignore the blur event
-                               this.cancelBlur = true;
-                               this._delay( function() {
-                                       delete this.cancelBlur;
-
-                                       // Support: IE 8 only
-                                       // Right clicking a menu item or selecting text from the menu items will
-                                       // result in focus moving out of the input. However, we've already received
-                                       // and ignored the blur event because of the cancelBlur flag set above. So
-                                       // we restore focus to ensure that the menu closes properly based on the user's
-                                       // next actions.
-                                       if ( this.element[ 0 ] !== $.ui.safeActiveElement( this.document[ 0 ] ) ) {
-                                               this.element.trigger( "focus" );
-                                       }
-                               } );
-
-                               // clicking on the scrollbar causes focus to shift to the body
-                               // but we can't detect a mouseup or a click immediately afterward
-                               // so we have to track the next mousedown and close the menu if
-                               // the user clicks somewhere outside of the autocomplete
-                               var menuElement = this.menu.element[ 0 ];
-                               if ( !$( event.target ).closest( ".ui-menu-item" ).length ) {
-                                       this._delay( function() {
-                                               var that = this;
-                                               this.document.one( "mousedown", function( event ) {
-                                                       if ( event.target !== that.element[ 0 ] &&
-                                                                       event.target !== menuElement &&
-                                                                       !$.contains( menuElement, event.target ) ) {
-                                                               that.close();
-                                                       }
-                                               } );
-                                       } );
-                               }
-                       },
-                       menufocus: function( event, ui ) {
-                               var label, item;
-                               // support: Firefox
-                               // Prevent accidental activation of menu items in Firefox (#7024 #9118)
-                               if ( this.isNewMenu ) {
-                                       this.isNewMenu = false;
-                                       if ( event.originalEvent && /^mouse/.test( event.originalEvent.type ) ) {
-                                               this.menu.blur();
-
-                                               this.document.one( "mousemove", function() {
-                                                       $( event.target ).trigger( event.originalEvent );
-                                               } );
-
-                                               return;
-                                       }
-                               }
-
-                               item = ui.item.data( "ui-autocomplete-item" );
-                               if ( false !== this._trigger( "focus", event, { item: item } ) ) {
-                                       // use value to match what will end up in the input, if it was a key event
-                                       if ( event.originalEvent && /^key/.test( event.originalEvent.type ) ) {
-                                               this._value( item.value );
-                                       }
-                               }
-
-                               // Announce the value in the liveRegion
-                               label = ui.item.attr( "aria-label" ) || item.value;
-                               if ( label && $.trim( label ).length ) {
-                                       this.liveRegion.children().hide();
-                                       $( "<div>" ).text( label ).appendTo( this.liveRegion );
-                               }
-                       },
-                       menuselect: function( event, ui ) {
-                               var item = ui.item.data( "ui-autocomplete-item" ),
-                                       previous = this.previous;
-
-                               // only trigger when focus was lost (click on menu)
-                               if ( this.element[ 0 ] !== $.ui.safeActiveElement( this.document[ 0 ] ) ) {
-                                       this.element.trigger( "focus" );
-                                       this.previous = previous;
-                                       // #6109 - IE triggers two focus events and the second
-                                       // is asynchronous, so we need to reset the previous
-                                       // term synchronously and asynchronously :-(
-                                       this._delay( function() {
-                                               this.previous = previous;
-                                               this.selectedItem = item;
-                                       } );
-                               }
-
-                               if ( false !== this._trigger( "select", event, { item: item } ) ) {
-                                       this._value( item.value );
-                               }
-                               // reset the term after the select event
-                               // this allows custom select handling to work properly
-                               this.term = this._value();
-
-                               this.close( event );
-                               this.selectedItem = item;
-                       }
-               } );
-
-               this.liveRegion = $( "<span>", {
-                       role: "status",
-                       "aria-live": "assertive",
-                       "aria-relevant": "additions"
-               } )
-                       .appendTo( this.document[ 0 ].body );
-
-               this._addClass( this.liveRegion, null, "ui-helper-hidden-accessible" );
-
-               // turning off autocomplete prevents the browser from remembering the
-               // value when navigating through history, so we re-enable autocomplete
-               // if the page is unloaded before the widget is destroyed. #7790
-               this._on( this.window, {
-                       beforeunload: function() {
-                               this.element.removeAttr( "autocomplete" );
-                       }
-               } );
-       },
-
-       _destroy: function() {
-               clearTimeout( this.searching );
-               this.element.removeAttr( "autocomplete" );
-               this.menu.element.remove();
-               this.liveRegion.remove();
-       },
-
-       _setOption: function( key, value ) {
-               this._super( key, value );
-               if ( key === "source" ) {
-                       this._initSource();
-               }
-               if ( key === "appendTo" ) {
-                       this.menu.element.appendTo( this._appendTo() );
-               }
-               if ( key === "disabled" && value && this.xhr ) {
-                       this.xhr.abort();
-               }
-       },
-
-       _appendTo: function() {
-               var element = this.options.appendTo;
-
-               if ( element ) {
-                       element = element.jquery || element.nodeType ?
-                               $( element ) :
-                               this.document.find( element ).eq( 0 );
-               }
-
-               if ( !element || !element[ 0 ] ) {
-                       element = this.element.closest( ".ui-front, dialog" );
-               }
-
-               if ( !element.length ) {
-                       element = this.document[ 0 ].body;
-               }
-
-               return element;
-       },
-
-       _initSource: function() {
-               var array, url,
-                       that = this;
-               if ( $.isArray( this.options.source ) ) {
-                       array = this.options.source;
-                       this.source = function( request, response ) {
-                               response( $.ui.autocomplete.filter( array, request.term ) );
-                       };
-               } else if ( typeof this.options.source === "string" ) {
-                       url = this.options.source;
-                       this.source = function( request, response ) {
-                               if ( that.xhr ) {
-                                       that.xhr.abort();
-                               }
-                               that.xhr = $.ajax( {
-                                       url: url,
-                                       data: request,
-                                       dataType: "json",
-                                       success: function( data ) {
-                                               response( data );
-                                       },
-                                       error: function() {
-                                               response( [] );
-                                       }
-                               } );
-                       };
-               } else {
-                       this.source = this.options.source;
-               }
-       },
-
-       _searchTimeout: function( event ) {
-               clearTimeout( this.searching );
-               this.searching = this._delay( function() {
-
-                       // Search if the value has changed, or if the user retypes the same value (see #7434)
-                       var equalValues = this.term === this._value(),
-                               menuVisible = this.menu.element.is( ":visible" ),
-                               modifierKey = event.altKey || event.ctrlKey || event.metaKey || event.shiftKey;
-
-                       if ( !equalValues || ( equalValues && !menuVisible && !modifierKey ) ) {
-                               this.selectedItem = null;
-                               this.search( null, event );
-                       }
-               }, this.options.delay );
-       },
-
-       search: function( value, event ) {
-               value = value != null ? value : this._value();
-
-               // always save the actual value, not the one passed as an argument
-               this.term = this._value();
-
-               if ( value.length < this.options.minLength ) {
-                       return this.close( event );
-               }
-
-               if ( this._trigger( "search", event ) === false ) {
-                       return;
-               }
-
-               return this._search( value );
-       },
-
-       _search: function( value ) {
-               this.pending++;
-               this._addClass( "ui-autocomplete-loading" );
-               this.cancelSearch = false;
-
-               this.source( { term: value }, this._response() );
-       },
-
-       _response: function() {
-               var index = ++this.requestIndex;
-
-               return $.proxy( function( content ) {
-                       if ( index === this.requestIndex ) {
-                               this.__response( content );
-                       }
-
-                       this.pending--;
-                       if ( !this.pending ) {
-                               this._removeClass( "ui-autocomplete-loading" );
-                       }
-               }, this );
-       },
-
-       __response: function( content ) {
-               if ( content ) {
-                       content = this._normalize( content );
-               }
-               this._trigger( "response", null, { content: content } );
-               if ( !this.options.disabled && content && content.length && !this.cancelSearch ) {
-                       this._suggest( content );
-                       this._trigger( "open" );
-               } else {
-                       // use ._close() instead of .close() so we don't cancel future searches
-                       this._close();
-               }
-       },
-
-       close: function( event ) {
-               this.cancelSearch = true;
-               this._close( event );
-       },
-
-       _close: function( event ) {
-               if ( this.menu.element.is( ":visible" ) ) {
-                       this.menu.element.hide();
-                       this.menu.blur();
-                       this.isNewMenu = true;
-                       this._trigger( "close", event );
-               }
-       },
-
-       _change: function( event ) {
-               if ( this.previous !== this._value() ) {
-                       this._trigger( "change", event, { item: this.selectedItem } );
-               }
-       },
-
-       _normalize: function( items ) {
-               // assume all items have the right format when the first item is complete
-               if ( items.length && items[ 0 ].label && items[ 0 ].value ) {
-                       return items;
-               }
-               return $.map( items, function( item ) {
-                       if ( typeof item === "string" ) {
-                               return {
-                                       label: item,
-                                       value: item
-                               };
-                       }
-                       return $.extend( {}, item, {
-                               label: item.label || item.value,
-                               value: item.value || item.label
-                       } );
-               } );
-       },
-
-       _suggest: function( items ) {
-               var ul = this.menu.element.empty();
-               this._renderMenu( ul, items );
-               this.isNewMenu = true;
-               this.menu.refresh();
-
-               // size and position menu
-               ul.show();
-               this._resizeMenu();
-               ul.position( $.extend( {
-                       of: this.element
-               }, this.options.position ) );
-
-               if ( this.options.autoFocus ) {
-                       this.menu.next();
-               }
-       },
-
-       _resizeMenu: function() {
-               var ul = this.menu.element;
-               ul.outerWidth( Math.max(
-                       // Firefox wraps long text (possibly a rounding bug)
-                       // so we add 1px to avoid the wrapping (#7513)
-                       ul.width( "" ).outerWidth() + 1,
-                       this.element.outerWidth()
-               ) );
-       },
-
-       _renderMenu: function( ul, items ) {
-               var that = this;
-               $.each( items, function( index, item ) {
-                       that._renderItemData( ul, item );
-               } );
-       },
-
-       _renderItemData: function( ul, item ) {
-               return this._renderItem( ul, item ).data( "ui-autocomplete-item", item );
-       },
-
-       _renderItem: function( ul, item ) {
-               return $( "<li>" )
-                       .append( $( "<div>" ).text( item.label ) )
-                       .appendTo( ul );
-       },
-
-       _move: function( direction, event ) {
-               if ( !this.menu.element.is( ":visible" ) ) {
-                       this.search( null, event );
-                       return;
-               }
-               if ( this.menu.isFirstItem() && /^previous/.test( direction ) ||
-                               this.menu.isLastItem() && /^next/.test( direction ) ) {
-
-                       if ( !this.isMultiLine ) {
-                               this._value( this.term );
-                       }
-
-                       this.menu.blur();
-                       return;
-               }
-               this.menu[ direction ]( event );
-       },
-
-       widget: function() {
-               return this.menu.element;
-       },
-
-       _value: function() {
-               return this.valueMethod.apply( this.element, arguments );
-       },
-
-       _keyEvent: function( keyEvent, event ) {
-               if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
-                       this._move( keyEvent, event );
-
-                       // prevents moving cursor to beginning/end of the text field in some browsers
-                       event.preventDefault();
-               }
-       }
-} );
-
-$.extend( $.ui.autocomplete, {
-       escapeRegex: function( value ) {
-               return value.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" );
-       },
-       filter: function( array, term ) {
-               var matcher = new RegExp( $.ui.autocomplete.escapeRegex( term ), "i" );
-               return $.grep( array, function( value ) {
-                       return matcher.test( value.label || value.value || value );
-               } );
-       }
-} );
-
-// live region extension, adding a `messages` option
-// NOTE: This is an experimental API. We are still investigating
-// a full solution for string manipulation and internationalization.
-$.widget( "ui.autocomplete", $.ui.autocomplete, {
-       options: {
-               messages: {
-                       noResults: "No search results.",
-                       results: function( amount ) {
-                               return amount + ( amount > 1 ? " results are" : " result is" ) +
-                                       " available, use up and down arrow keys to navigate.";
-                       }
-               }
-       },
-
-       __response: function( content ) {
-               var message;
-               this._superApply( arguments );
-               if ( this.options.disabled || this.cancelSearch ) {
-                       return;
-               }
-               if ( content && content.length ) {
-                       message = this.options.messages.results( content.length );
-               } else {
-                       message = this.options.messages.noResults;
-               }
-               this.liveRegion.children().hide();
-               $( "<div>" ).text( message ).appendTo( this.liveRegion );
-       }
-} );
-
-return $.ui.autocomplete;
-
-} ) );
diff --git a/ui/widgets/autocomplete.js b/ui/widgets/autocomplete.js
new file mode 100644 (file)
index 0000000..b91d6f1
--- /dev/null
@@ -0,0 +1,645 @@
+/*!
+ * jQuery UI Autocomplete @VERSION
+ * http://jqueryui.com
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license.
+ * http://jquery.org/license
+ */
+
+//>>label: Autocomplete
+//>>group: Widgets
+//>>description: Lists suggested words as the user is typing.
+//>>docs: http://api.jqueryui.com/autocomplete/
+//>>demos: http://jqueryui.com/autocomplete/
+//>>css.structure: ../themes/base/core.css
+//>>css.structure: ../themes/base/autocomplete.css
+//>>css.theme: ../themes/base/theme.css
+
+( function( factory ) {
+       if ( typeof define === "function" && define.amd ) {
+
+               // AMD. Register as an anonymous module.
+               define( [
+                       "jquery",
+                       "../menu",
+                       "../keycode",
+                       "../position",
+                       "../safe-active-element",
+                       "../version",
+                       "../widget"
+               ], factory );
+       } else {
+
+               // Browser globals
+               factory( jQuery );
+       }
+}( function( $ ) {
+
+$.widget( "ui.autocomplete", {
+       version: "@VERSION",
+       defaultElement: "<input>",
+       options: {
+               appendTo: null,
+               autoFocus: false,
+               delay: 300,
+               minLength: 1,
+               position: {
+                       my: "left top",
+                       at: "left bottom",
+                       collision: "none"
+               },
+               source: null,
+
+               // callbacks
+               change: null,
+               close: null,
+               focus: null,
+               open: null,
+               response: null,
+               search: null,
+               select: null
+       },
+
+       requestIndex: 0,
+       pending: 0,
+
+       _create: function() {
+               // Some browsers only repeat keydown events, not keypress events,
+               // so we use the suppressKeyPress flag to determine if we've already
+               // handled the keydown event. #7269
+               // Unfortunately the code for & in keypress is the same as the up arrow,
+               // so we use the suppressKeyPressRepeat flag to avoid handling keypress
+               // events when we know the keydown event was used to modify the
+               // search term. #7799
+               var suppressKeyPress, suppressKeyPressRepeat, suppressInput,
+                       nodeName = this.element[ 0 ].nodeName.toLowerCase(),
+                       isTextarea = nodeName === "textarea",
+                       isInput = nodeName === "input";
+
+               // Textareas are always multi-line
+               // Inputs are always single-line, even if inside a contentEditable element
+               // IE also treats inputs as contentEditable
+               // All other element types are determined by whether or not they're contentEditable
+               this.isMultiLine = isTextarea || !isInput && this.element.prop( "isContentEditable" );
+
+               this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
+               this.isNewMenu = true;
+
+               this._addClass( "ui-autocomplete-input" );
+               this.element.attr( "autocomplete", "off" );
+
+               this._on( this.element, {
+                       keydown: function( event ) {
+                               if ( this.element.prop( "readOnly" ) ) {
+                                       suppressKeyPress = true;
+                                       suppressInput = true;
+                                       suppressKeyPressRepeat = true;
+                                       return;
+                               }
+
+                               suppressKeyPress = false;
+                               suppressInput = false;
+                               suppressKeyPressRepeat = false;
+                               var keyCode = $.ui.keyCode;
+                               switch ( event.keyCode ) {
+                               case keyCode.PAGE_UP:
+                                       suppressKeyPress = true;
+                                       this._move( "previousPage", event );
+                                       break;
+                               case keyCode.PAGE_DOWN:
+                                       suppressKeyPress = true;
+                                       this._move( "nextPage", event );
+                                       break;
+                               case keyCode.UP:
+                                       suppressKeyPress = true;
+                                       this._keyEvent( "previous", event );
+                                       break;
+                               case keyCode.DOWN:
+                                       suppressKeyPress = true;
+                                       this._keyEvent( "next", event );
+                                       break;
+                               case keyCode.ENTER:
+                                       // when menu is open and has focus
+                                       if ( this.menu.active ) {
+                                               // #6055 - Opera still allows the keypress to occur
+                                               // which causes forms to submit
+                                               suppressKeyPress = true;
+                                               event.preventDefault();
+                                               this.menu.select( event );
+                                       }
+                                       break;
+                               case keyCode.TAB:
+                                       if ( this.menu.active ) {
+                                               this.menu.select( event );
+                                       }
+                                       break;
+                               case keyCode.ESCAPE:
+                                       if ( this.menu.element.is( ":visible" ) ) {
+                                               if ( !this.isMultiLine ) {
+                                                       this._value( this.term );
+                                               }
+                                               this.close( event );
+                                               // Different browsers have different default behavior for escape
+                                               // Single press can mean undo or clear
+                                               // Double press in IE means clear the whole form
+                                               event.preventDefault();
+                                       }
+                                       break;
+                               default:
+                                       suppressKeyPressRepeat = true;
+                                       // search timeout should be triggered before the input value is changed
+                                       this._searchTimeout( event );
+                                       break;
+                               }
+                       },
+                       keypress: function( event ) {
+                               if ( suppressKeyPress ) {
+                                       suppressKeyPress = false;
+                                       if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
+                                               event.preventDefault();
+                                       }
+                                       return;
+                               }
+                               if ( suppressKeyPressRepeat ) {
+                                       return;
+                               }
+
+                               // replicate some key handlers to allow them to repeat in Firefox and Opera
+                               var keyCode = $.ui.keyCode;
+                               switch ( event.keyCode ) {
+                               case keyCode.PAGE_UP:
+                                       this._move( "previousPage", event );
+                                       break;
+                               case keyCode.PAGE_DOWN:
+                                       this._move( "nextPage", event );
+                                       break;
+                               case keyCode.UP:
+                                       this._keyEvent( "previous", event );
+                                       break;
+                               case keyCode.DOWN:
+                                       this._keyEvent( "next", event );
+                                       break;
+                               }
+                       },
+                       input: function( event ) {
+                               if ( suppressInput ) {
+                                       suppressInput = false;
+                                       event.preventDefault();
+                                       return;
+                               }
+                               this._searchTimeout( event );
+                       },
+                       focus: function() {
+                               this.selectedItem = null;
+                               this.previous = this._value();
+                       },
+                       blur: function( event ) {
+                               if ( this.cancelBlur ) {
+                                       delete this.cancelBlur;
+                                       return;
+                               }
+
+                               clearTimeout( this.searching );
+                               this.close( event );
+                               this._change( event );
+                       }
+               } );
+
+               this._initSource();
+               this.menu = $( "<ul>" )
+                       .appendTo( this._appendTo() )
+                       .menu( {
+                               // disable ARIA support, the live region takes care of that
+                               role: null
+                       } )
+                       .hide()
+                       .menu( "instance" );
+
+               this._addClass( this.menu.element, "ui-autocomplete", "ui-front" );
+               this._on( this.menu.element, {
+                       mousedown: function( event ) {
+                               // prevent moving focus out of the text field
+                               event.preventDefault();
+
+                               // IE doesn't prevent moving focus even with event.preventDefault()
+                               // so we set a flag to know when we should ignore the blur event
+                               this.cancelBlur = true;
+                               this._delay( function() {
+                                       delete this.cancelBlur;
+
+                                       // Support: IE 8 only
+                                       // Right clicking a menu item or selecting text from the menu items will
+                                       // result in focus moving out of the input. However, we've already received
+                                       // and ignored the blur event because of the cancelBlur flag set above. So
+                                       // we restore focus to ensure that the menu closes properly based on the user's
+                                       // next actions.
+                                       if ( this.element[ 0 ] !== $.ui.safeActiveElement( this.document[ 0 ] ) ) {
+                                               this.element.trigger( "focus" );
+                                       }
+                               } );
+
+                               // clicking on the scrollbar causes focus to shift to the body
+                               // but we can't detect a mouseup or a click immediately afterward
+                               // so we have to track the next mousedown and close the menu if
+                               // the user clicks somewhere outside of the autocomplete
+                               var menuElement = this.menu.element[ 0 ];
+                               if ( !$( event.target ).closest( ".ui-menu-item" ).length ) {
+                                       this._delay( function() {
+                                               var that = this;
+                                               this.document.one( "mousedown", function( event ) {
+                                                       if ( event.target !== that.element[ 0 ] &&
+                                                                       event.target !== menuElement &&
+                                                                       !$.contains( menuElement, event.target ) ) {
+                                                               that.close();
+                                                       }
+                                               } );
+                                       } );
+                               }
+                       },
+                       menufocus: function( event, ui ) {
+                               var label, item;
+                               // support: Firefox
+                               // Prevent accidental activation of menu items in Firefox (#7024 #9118)
+                               if ( this.isNewMenu ) {
+                                       this.isNewMenu = false;
+                                       if ( event.originalEvent && /^mouse/.test( event.originalEvent.type ) ) {
+                                               this.menu.blur();
+
+                                               this.document.one( "mousemove", function() {
+                                                       $( event.target ).trigger( event.originalEvent );
+                                               } );
+
+                                               return;
+                                       }
+                               }
+
+                               item = ui.item.data( "ui-autocomplete-item" );
+                               if ( false !== this._trigger( "focus", event, { item: item } ) ) {
+                                       // use value to match what will end up in the input, if it was a key event
+                                       if ( event.originalEvent && /^key/.test( event.originalEvent.type ) ) {
+                                               this._value( item.value );
+                                       }
+                               }
+
+                               // Announce the value in the liveRegion
+                               label = ui.item.attr( "aria-label" ) || item.value;
+                               if ( label && $.trim( label ).length ) {
+                                       this.liveRegion.children().hide();
+                                       $( "<div>" ).text( label ).appendTo( this.liveRegion );
+                               }
+                       },
+                       menuselect: function( event, ui ) {
+                               var item = ui.item.data( "ui-autocomplete-item" ),
+                                       previous = this.previous;
+
+                               // only trigger when focus was lost (click on menu)
+                               if ( this.element[ 0 ] !== $.ui.safeActiveElement( this.document[ 0 ] ) ) {
+                                       this.element.trigger( "focus" );
+                                       this.previous = previous;
+                                       // #6109 - IE triggers two focus events and the second
+                                       // is asynchronous, so we need to reset the previous
+                                       // term synchronously and asynchronously :-(
+                                       this._delay( function() {
+                                               this.previous = previous;
+                                               this.selectedItem = item;
+                                       } );
+                               }
+
+                               if ( false !== this._trigger( "select", event, { item: item } ) ) {
+                                       this._value( item.value );
+                               }
+                               // reset the term after the select event
+                               // this allows custom select handling to work properly
+                               this.term = this._value();
+
+                               this.close( event );
+                               this.selectedItem = item;
+                       }
+               } );
+
+               this.liveRegion = $( "<span>", {
+                       role: "status",
+                       "aria-live": "assertive",
+                       "aria-relevant": "additions"
+               } )
+                       .appendTo( this.document[ 0 ].body );
+
+               this._addClass( this.liveRegion, null, "ui-helper-hidden-accessible" );
+
+               // turning off autocomplete prevents the browser from remembering the
+               // value when navigating through history, so we re-enable autocomplete
+               // if the page is unloaded before the widget is destroyed. #7790
+               this._on( this.window, {
+                       beforeunload: function() {
+                               this.element.removeAttr( "autocomplete" );
+                       }
+               } );
+       },
+
+       _destroy: function() {
+               clearTimeout( this.searching );
+               this.element.removeAttr( "autocomplete" );
+               this.menu.element.remove();
+               this.liveRegion.remove();
+       },
+
+       _setOption: function( key, value ) {
+               this._super( key, value );
+               if ( key === "source" ) {
+                       this._initSource();
+               }
+               if ( key === "appendTo" ) {
+                       this.menu.element.appendTo( this._appendTo() );
+               }
+               if ( key === "disabled" && value && this.xhr ) {
+                       this.xhr.abort();
+               }
+       },
+
+       _appendTo: function() {
+               var element = this.options.appendTo;
+
+               if ( element ) {
+                       element = element.jquery || element.nodeType ?
+                               $( element ) :
+                               this.document.find( element ).eq( 0 );
+               }
+
+               if ( !element || !element[ 0 ] ) {
+                       element = this.element.closest( ".ui-front, dialog" );
+               }
+
+               if ( !element.length ) {
+                       element = this.document[ 0 ].body;
+               }
+
+               return element;
+       },
+
+       _initSource: function() {
+               var array, url,
+                       that = this;
+               if ( $.isArray( this.options.source ) ) {
+                       array = this.options.source;
+                       this.source = function( request, response ) {
+                               response( $.ui.autocomplete.filter( array, request.term ) );
+                       };
+               } else if ( typeof this.options.source === "string" ) {
+                       url = this.options.source;
+                       this.source = function( request, response ) {
+                               if ( that.xhr ) {
+                                       that.xhr.abort();
+                               }
+                               that.xhr = $.ajax( {
+                                       url: url,
+                                       data: request,
+                                       dataType: "json",
+                                       success: function( data ) {
+                                               response( data );
+                                       },
+                                       error: function() {
+                                               response( [] );
+                                       }
+                               } );
+                       };
+               } else {
+                       this.source = this.options.source;
+               }
+       },
+
+       _searchTimeout: function( event ) {
+               clearTimeout( this.searching );
+               this.searching = this._delay( function() {
+
+                       // Search if the value has changed, or if the user retypes the same value (see #7434)
+                       var equalValues = this.term === this._value(),
+                               menuVisible = this.menu.element.is( ":visible" ),
+                               modifierKey = event.altKey || event.ctrlKey || event.metaKey || event.shiftKey;
+
+                       if ( !equalValues || ( equalValues && !menuVisible && !modifierKey ) ) {
+                               this.selectedItem = null;
+                               this.search( null, event );
+                       }
+               }, this.options.delay );
+       },
+
+       search: function( value, event ) {
+               value = value != null ? value : this._value();
+
+               // always save the actual value, not the one passed as an argument
+               this.term = this._value();
+
+               if ( value.length < this.options.minLength ) {
+                       return this.close( event );
+               }
+
+               if ( this._trigger( "search", event ) === false ) {
+                       return;
+               }
+
+               return this._search( value );
+       },
+
+       _search: function( value ) {
+               this.pending++;
+               this._addClass( "ui-autocomplete-loading" );
+               this.cancelSearch = false;
+
+               this.source( { term: value }, this._response() );
+       },
+
+       _response: function() {
+               var index = ++this.requestIndex;
+
+               return $.proxy( function( content ) {
+                       if ( index === this.requestIndex ) {
+                               this.__response( content );
+                       }
+
+                       this.pending--;
+                       if ( !this.pending ) {
+                               this._removeClass( "ui-autocomplete-loading" );
+                       }
+               }, this );
+       },
+
+       __response: function( content ) {
+               if ( content ) {
+                       content = this._normalize( content );
+               }
+               this._trigger( "response", null, { content: content } );
+               if ( !this.options.disabled && content && content.length && !this.cancelSearch ) {
+                       this._suggest( content );
+                       this._trigger( "open" );
+               } else {
+                       // use ._close() instead of .close() so we don't cancel future searches
+                       this._close();
+               }
+       },
+
+       close: function( event ) {
+               this.cancelSearch = true;
+               this._close( event );
+       },
+
+       _close: function( event ) {
+               if ( this.menu.element.is( ":visible" ) ) {
+                       this.menu.element.hide();
+                       this.menu.blur();
+                       this.isNewMenu = true;
+                       this._trigger( "close", event );
+               }
+       },
+
+       _change: function( event ) {
+               if ( this.previous !== this._value() ) {
+                       this._trigger( "change", event, { item: this.selectedItem } );
+               }
+       },
+
+       _normalize: function( items ) {
+               // assume all items have the right format when the first item is complete
+               if ( items.length && items[ 0 ].label && items[ 0 ].value ) {
+                       return items;
+               }
+               return $.map( items, function( item ) {
+                       if ( typeof item === "string" ) {
+                               return {
+                                       label: item,
+                                       value: item
+                               };
+                       }
+                       return $.extend( {}, item, {
+                               label: item.label || item.value,
+                               value: item.value || item.label
+                       } );
+               } );
+       },
+
+       _suggest: function( items ) {
+               var ul = this.menu.element.empty();
+               this._renderMenu( ul, items );
+               this.isNewMenu = true;
+               this.menu.refresh();
+
+               // size and position menu
+               ul.show();
+               this._resizeMenu();
+               ul.position( $.extend( {
+                       of: this.element
+               }, this.options.position ) );
+
+               if ( this.options.autoFocus ) {
+                       this.menu.next();
+               }
+       },
+
+       _resizeMenu: function() {
+               var ul = this.menu.element;
+               ul.outerWidth( Math.max(
+                       // Firefox wraps long text (possibly a rounding bug)
+                       // so we add 1px to avoid the wrapping (#7513)
+                       ul.width( "" ).outerWidth() + 1,
+                       this.element.outerWidth()
+               ) );
+       },
+
+       _renderMenu: function( ul, items ) {
+               var that = this;
+               $.each( items, function( index, item ) {
+                       that._renderItemData( ul, item );
+               } );
+       },
+
+       _renderItemData: function( ul, item ) {
+               return this._renderItem( ul, item ).data( "ui-autocomplete-item", item );
+       },
+
+       _renderItem: function( ul, item ) {
+               return $( "<li>" )
+                       .append( $( "<div>" ).text( item.label ) )
+                       .appendTo( ul );
+       },
+
+       _move: function( direction, event ) {
+               if ( !this.menu.element.is( ":visible" ) ) {
+                       this.search( null, event );
+                       return;
+               }
+               if ( this.menu.isFirstItem() && /^previous/.test( direction ) ||
+                               this.menu.isLastItem() && /^next/.test( direction ) ) {
+
+                       if ( !this.isMultiLine ) {
+                               this._value( this.term );
+                       }
+
+                       this.menu.blur();
+                       return;
+               }
+               this.menu[ direction ]( event );
+       },
+
+       widget: function() {
+               return this.menu.element;
+       },
+
+       _value: function() {
+               return this.valueMethod.apply( this.element, arguments );
+       },
+
+       _keyEvent: function( keyEvent, event ) {
+               if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
+                       this._move( keyEvent, event );
+
+                       // prevents moving cursor to beginning/end of the text field in some browsers
+                       event.preventDefault();
+               }
+       }
+} );
+
+$.extend( $.ui.autocomplete, {
+       escapeRegex: function( value ) {
+               return value.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" );
+       },
+       filter: function( array, term ) {
+               var matcher = new RegExp( $.ui.autocomplete.escapeRegex( term ), "i" );
+               return $.grep( array, function( value ) {
+                       return matcher.test( value.label || value.value || value );
+               } );
+       }
+} );
+
+// live region extension, adding a `messages` option
+// NOTE: This is an experimental API. We are still investigating
+// a full solution for string manipulation and internationalization.
+$.widget( "ui.autocomplete", $.ui.autocomplete, {
+       options: {
+               messages: {
+                       noResults: "No search results.",
+                       results: function( amount ) {
+                               return amount + ( amount > 1 ? " results are" : " result is" ) +
+                                       " available, use up and down arrow keys to navigate.";
+                       }
+               }
+       },
+
+       __response: function( content ) {
+               var message;
+               this._superApply( arguments );
+               if ( this.options.disabled || this.cancelSearch ) {
+                       return;
+               }
+               if ( content && content.length ) {
+                       message = this.options.messages.results( content.length );
+               } else {
+                       message = this.options.messages.noResults;
+               }
+               this.liveRegion.children().hide();
+               $( "<div>" ).text( message ).appendTo( this.liveRegion );
+       }
+} );
+
+return $.ui.autocomplete;
+
+} ) );