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-/*!
- * jQuery UI Autocomplete 1.10.3
- * http://jqueryui.com
- *
- * Copyright 2013 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: "1.10.3",
- 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
- },
-
- 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";
-
- this.isMultiLine =
- // Textareas are always multi-line
- isTextarea ? true :
- // Inputs are always single-line, even if inside a contentEditable element
- // IE also treats inputs as contentEditable
- isInput ? false :
- // All other element types are determined by whether or not they're contentEditable
- this.element.prop( "isContentEditable" );
-
- this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
- this.isNewMenu = true;
-
- this.element
- .addClass( "ui-autocomplete-input" )
- .attr( "autocomplete", "off" );
-
- this._on( this.element, {
- keydown: function( event ) {
- /*jshint maxcomplexity:15*/
- 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;
- 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 = $( "<ul>" )
- .addClass( "ui-autocomplete ui-front" )
- .appendTo( this._appendTo() )
- .menu({
- // disable ARIA support, the live region takes care of that
- role: null
- })
- .hide()
- .data( "ui-menu" );
-
- this._on( this.menu.element, {
- mousedown: function( event ) {
- // prevent moving focus out of the text field
- event.preventDefault();
-
- // IE doesn't prevent moving focus even with event.preventDefault()
- // so we set a flag to know when we should ignore the blur event
- this.cancelBlur = true;
- this._delay(function() {
- delete this.cancelBlur;
- });
-
- // clicking on the scrollbar causes focus to shift to the body
- // but we can't detect a mouseup or a click immediately afterward
- // so we have to track the next mousedown and close the menu if
- // the user clicks somewhere outside of the autocomplete
- var menuElement = this.menu.element[ 0 ];
- if ( !$( 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 ) {
- // 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;
- }
- }
-
- var 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 );
- }
- } 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 ) {
- var item = ui.item.data( "ui-autocomplete-item" ),
- 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" )
- .insertBefore( this.element );
-
- // 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._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 = this.element.closest( ".ui-front" );
- }
-
- 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() {
- // 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();
- 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( $( "<a>" ).text( item.label ) )
- .appendTo( ul );
- },
-
- _move: function( direction, event ) {
- if ( !this.menu.element.is( ":visible" ) ) {
- this.search( null, event );
- return;
- }
- if ( this.menu.isFirstItem() && /^previous/.test( direction ) ||
- this.menu.isLastItem() && /^next/.test( direction ) ) {
- this._value( this.term );
- this.menu.blur();
- return;
- }
- this.menu[ direction ]( event );
- },
-
- widget: function() {
- return this.menu.element;
- },
-
- _value: function() {
- return this.valueMethod.apply( this.element, arguments );
- },
-
- _keyEvent: function( keyEvent, event ) {
- if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
- this._move( keyEvent, event );
-
- // prevents moving cursor to beginning/end of the text field in some browsers
- event.preventDefault();
- }
- }
-});
-
-$.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 ));
Copyright © 2017-2018 Aaron LI. All Rights Reserved.