File Content: autocomplete.js /*! * jQuery UI Autocomplete 1.12.1 * 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", "./core" ], factory ); } else { // Browser globals factory( jQuery ); } }( function( $ ) { $.widget( "ui.autocomplete", { version: "1.12.1", 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._isContentEditable( this.element ); 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" ); } } ); }, 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 = $( "<div>", { 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(); } }, _isEventTargetInWidget: function( event ) { var menuElement = this.menu.element[ 0 ]; return event.target === this.element[ 0 ] || event.target === menuElement || $.contains( menuElement, event.target ); }, _closeOnClickOutside: function( event ) { if ( !this._isEventTargetInWidget( event ) ) { this.close(); } }, _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 ) { // Remove the handler that closes the menu on outside clicks this._off( this.document, "mousedown" ); 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(); } // Listen for interactions outside of the widget (#6642) this._on( this.document, { mousedown: "_closeOnClickOutside" } ); }, _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(); } }, // Support: Chrome <=50 // We should be able to just use this.element.prop( "isContentEditable" ) // but hidden elements always report false in Chrome. // https://code.google.com/p/chromium/issues/detail?id=313082 _isContentEditable: function( element ) { if ( !element.length ) { return false; } var editable = element.prop( "contentEditable" ); if ( editable === "inherit" ) { return this._isContentEditable( element.parent() ); } return editable === "true"; } } ); $.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; } ) ); Submit