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/*! * jQuery UI Autocomplete 1.9.2 * http://jqueryui.com * * Copyright 2012 jQuery Foundation and other contributors * Released under the MIT license. * http://jquery.org/license * * http://api.jqueryui.com/autocomplete/ * * Depends: * jquery.ui.core.js * jquery.ui.widget.js * jquery.ui.position.js * jquery.ui.menu.js */ (function( $, undefined ) { // used to prevent race conditions with remote data sources var requestIndex = 0; $.widget( "ui.autocomplete", { version: "1.9.2", defaultElement: "<input>", options: { appendTo: "body", 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 }, 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; this.isMultiLine = this._isMultiLine(); this.valueMethod = this.element[ this.element.is( "input,textarea" ) ? "val" : "text" ]; this.isNewMenu = true; this.element .addClass( "ui-autocomplete-input" ) .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: case keyCode.NUMPAD_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" ) ) { 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; 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>" ) .addClass( "ui-autocomplete" ) .appendTo( this.document.find( this.options.appendTo || "body" )[ 0 ] ) .menu({ // custom key handling for now input: $(), // disable ARIA support, the live region takes care of that role: null }) .zIndex( this.element.zIndex() + 1 ) .hide() .data( "menu" ); this._on( this.menu.element, { mousedown: function( event ) { // prevent moving focus out of the text field event.preventDefault(); // IE doesn't prevent moving focus even with event.preventDefault() // so we set a flag to know when we should ignore the blur event this.cancelBlur = true; this._delay(function() { delete this.cancelBlur; }); // clicking on the scrollbar causes focus to shift to the body // but we can't detect a mouseup or a click immediately afterward // so we have to track the next mousedown and close the menu if // the user clicks somewhere outside of the autocomplete var menuElement = this.menu.element[ 0 ]; if ( !$( 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 ) { // #7024 - Prevent accidental activation of menu items in Firefox 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; } } // back compat for _renderItem using item.autocomplete, via #7810 // TODO remove the fallback, see #8156 var item = ui.item.data( "ui-autocomplete-item" ) || ui.item.data( "item.autocomplete" ); 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 ); } } else { // Normally the input is populated with the item's value as the // menu is navigated, causing screen readers to notice a change and // announce the item. Since the focus event was canceled, this doesn't // happen, so we update the live region so that screen readers can // still notice the change and announce it. this.liveRegion.text( item.value ); } }, menuselect: function( event, ui ) { // back compat for _renderItem using item.autocomplete, via #7810 // TODO remove the fallback, see #8156 var item = ui.item.data( "ui-autocomplete-item" ) || ui.item.data( "item.autocomplete" ), previous = this.previous; // only trigger when focus was lost (click on menu) if ( this.element[0] !== this.document[0].activeElement ) { this.element.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": "polite" }) .addClass( "ui-helper-hidden-accessible" ) .insertAfter( this.element ); if ( $.fn.bgiframe ) { this.menu.element.bgiframe(); } // 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 .removeClass( "ui-autocomplete-input" ) .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.document.find( value || "body" )[0] ); } if ( key === "disabled" && value && this.xhr ) { this.xhr.abort(); } }, _isMultiLine: function() { // Textareas are always multi-line if ( this.element.is( "textarea" ) ) { return true; } // Inputs are always single-line, even if inside a contentEditable element // IE also treats inputs as contentEditable if ( this.element.is( "input" ) ) { return false; } // All other element types are determined by whether or not they're contentEditable return this.element.prop( "isContentEditable" ); }, _initSource: function() { var array, url, that = this; if ( Array.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() { // only search if the value has changed if ( this.term !== this._value() ) { 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.element.addClass( "ui-autocomplete-loading" ); this.cancelSearch = false; this.source( { term: value }, this._response() ); }, _response: function() { var that = this, index = ++requestIndex; return function( content ) { if ( index === requestIndex ) { that.__response( content ); } that.pending--; if ( !that.pending ) { that.element.removeClass( "ui-autocomplete-loading" ); } }; }, __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({ label: item.label || item.value, value: item.value || item.label }, item ); }); }, _suggest: function( items ) { var ul = this.menu.element .empty() .zIndex( this.element.zIndex() + 1 ); this._renderMenu( ul, items ); 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( $( "<a>" ).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 ) ) { 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.text( message ); } }); }( jQuery ));
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