--- a/busui/js/jquery.ui.autocomplete.js +++ b/busui/js/jquery.ui.autocomplete.js @@ -1,1 +1,426 @@ - +/* + * jQuery UI Autocomplete @VERSION + * + * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about) + * Dual licensed under the MIT or GPL Version 2 licenses. + * http://jquery.org/license + * + * http://docs.jquery.com/UI/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", { + defaultElement: "<input>", + options: { + appendTo: "body", + delay: 300, + minLength: 1, + position: { + my: "left top", + at: "left bottom", + collision: "none" + }, + source: null + }, + + pending: 0, + + _create: function() { + var self = this, + doc = this.element[ 0 ].ownerDocument, + suppressKeyPress; + + this.element + .addClass( "ui-autocomplete-input" ) + .attr( "autocomplete", "off" ) + // TODO verify these actually work as intended + .attr({ + role: "textbox", + "aria-autocomplete": "list", + "aria-haspopup": "true" + }) + .bind( "keydown.autocomplete", function( event ) { + if ( self.options.disabled || self.element.attr( "readonly" ) ) { + return; + } + + suppressKeyPress = false; + var keyCode = $.ui.keyCode; + switch( event.keyCode ) { + case keyCode.PAGE_UP: + self._move( "previousPage", event ); + break; + case keyCode.PAGE_DOWN: + self._move( "nextPage", event ); + break; + case keyCode.UP: + self._move( "previous", event ); + // prevent moving cursor to beginning of text field in some browsers + event.preventDefault(); + break; + case keyCode.DOWN: + self._move( "next", event ); + // prevent moving cursor to end of text field in some browsers + event.preventDefault(); + break; + case keyCode.ENTER: + case keyCode.NUMPAD_ENTER: + // when menu is open and has focus + if ( self.menu.active ) { + // #6055 - Opera still allows the keypress to occur + // which causes forms to submit + suppressKeyPress = true; + event.preventDefault(); + } + //passthrough - ENTER and TAB both select the current element + case keyCode.TAB: + if ( !self.menu.active ) { + return; + } + self.menu.select( event ); + break; + case keyCode.ESCAPE: + self.element.val( self.term ); + self.close( event ); + break; + default: + // keypress is triggered before the input value is changed + clearTimeout( self.searching ); + self.searching = setTimeout(function() { + // only search if the value has changed + if ( self.term != self.element.val() ) { + self.selectedItem = null; + self.search( null, event ); + } + }, self.options.delay ); + break; + } + }) + .bind( "keypress.autocomplete", function( event ) { + if ( suppressKeyPress ) { + suppressKeyPress = false; + event.preventDefault(); + } + }) + .bind( "focus.autocomplete", function() { + if ( self.options.disabled ) { + return; + } + + self.selectedItem = null; + self.previous = self.element.val(); + }) + .bind( "blur.autocomplete", function( event ) { + if ( self.options.disabled ) { + return; + } + + clearTimeout( self.searching ); + // clicks on the menu (or a button to trigger a search) will cause a blur event + self.closing = setTimeout(function() { + self.close( event ); + self._change( event ); + }, 150 ); + }); + this._initSource(); + this.response = function() { + return self._response.apply( self, arguments ); + }; + this.menu = $( "<ul></ul>" ) + .addClass( "ui-autocomplete" ) + .appendTo( $( this.options.appendTo || "body", doc )[0] ) + // prevent the close-on-blur in case of a "slow" click on the menu (long mousedown) + .mousedown(function( event ) { + // clicking on the scrollbar causes focus to shift to the body + // but we can't detect a mouseup or a click immediately afterward + // so we have to track the next mousedown and close the menu if + // the user clicks somewhere outside of the autocomplete + var menuElement = self.menu.element[ 0 ]; + if ( !$( event.target ).closest( ".ui-menu-item" ).length ) { + setTimeout(function() { + $( document ).one( 'mousedown', function( event ) { + if ( event.target !== self.element[ 0 ] && + event.target !== menuElement && + !$.contains( menuElement, event.target ) ) { + self.close(); + } + }); + }, 1 ); + } + + // use another timeout to make sure the blur-event-handler on the input was already triggered + setTimeout(function() { + clearTimeout( self.closing ); + }, 13); + }) + .menu({ + // custom key handling for now + input: $(), + focus: function( event, ui ) { + var item = ui.item.data( "item.autocomplete" ); + if ( false !== self._trigger( "focus", event, { item: item } ) ) { + // use value to match what will end up in the input, if it was a key event + if ( /^key/.test(event.originalEvent.type) ) { + self.element.val( item.value ); + } + } + }, + select: function( event, ui ) { + var item = ui.item.data( "item.autocomplete" ), + previous = self.previous; + + // only trigger when focus was lost (click on menu) + if ( self.element[0] !== doc.activeElement ) { + self.element.focus(); + self.previous = previous; + // #6109 - IE triggers two focus events and the second + // is asynchronous, so we need to reset the previous + // term synchronously and asynchronously :-( + setTimeout(function() { + self.previous = previous; + self.selectedItem = item; + }, 1); + } + + if ( false !== self._trigger( "select", event, { item: item } ) ) { + self.element.val( item.value ); + } + // reset the term after the select event + // this allows custom select handling to work properly + self.term = self.element.val(); + + self.close( event ); + self.selectedItem = item; + }, + blur: function( event, ui ) { + // don't set the value of the text field if it's already correct + // this prevents moving the cursor unnecessarily + if ( self.menu.element.is(":visible") && + ( self.element.val() !== self.term ) ) { + self.element.val( self.term ); + } + } + }) + .zIndex( this.element.zIndex() + 1 ) + .hide() + .data( "menu" ); + if ( $.fn.bgiframe ) { + this.menu.element.bgiframe(); + } + }, + + _destroy: function() { + this.element + .removeClass( "ui-autocomplete-input" ) + .removeAttr( "autocomplete" ) + .removeAttr( "role" ) + .removeAttr( "aria-autocomplete" ) + .removeAttr( "aria-haspopup" ); + this.menu.element.remove(); + }, + + _setOption: function( key, value ) { + this._super( "_setOption", key, value ); + if ( key === "source" ) { + this._initSource(); + } + if ( key === "appendTo" ) { + this.menu.element.appendTo( $( value || "body", this.element[0].ownerDocument )[0] ) + } + if ( key === "disabled" && value && this.xhr ) { + this.xhr.abort(); + } + }, + + _initSource: function() { + var self = this, + array, + url; + 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 ( self.xhr ) { + self.xhr.abort(); + } + self.xhr = $.ajax({ + url: url, + data: request, + dataType: "json", + autocompleteRequest: ++requestIndex, + success: function( data, status ) { + if ( this.autocompleteRequest === requestIndex ) { + response( data ); + } + }, + error: function() { + if ( this.autocompleteRequest === requestIndex ) { + response( [] ); + } + } + }); + }; + } else { + this.source = this.options.source; + } + }, + + search: function( value, event ) { + value = value != null ? value : this.element.val(); + + // always save the actual value, not the one passed as an argument + this.term = this.element.val(); + + if ( value.length < this.options.minLength ) { + return this.close( event ); + } + + clearTimeout( this.closing ); + if ( this._trigger( "search", event ) === false ) { + return; + } + + return this._search( value ); + }, + + _search: function( value ) { + this.pending++; + this.element.addClass( "ui-autocomplete-loading" ); + + this.source( { term: value }, this.response ); + }, + + _response: function( content ) { + if ( !this.options.disabled && content && content.length ) { + content = this._normalize( content ); + this._suggest( content ); + this._trigger( "open" ); + } else { + this.close(); + } + this.pending--; + if ( !this.pending ) { + this.element.removeClass( "ui-autocomplete-loading" ); + } + }, + + close: function( event ) { + clearTimeout( this.closing ); + if ( this.menu.element.is(":visible") ) { + this.menu.element.hide(); + this.menu.deactivate(); + this._trigger( "close", event ); + } + }, + + _change: function( event ) { + if ( this.previous !== this.element.val() ) { + 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 ); + // TODO refresh should check if the active item is still in the dom, removing the need for a manual deactivate + this.menu.deactivate(); + this.menu.refresh(); + + // size and position menu + ul.show(); + this._resizeMenu(); + ul.position( $.extend({ + of: this.element + }, this.options.position )); + }, + + _resizeMenu: function() { + var ul = this.menu.element; + ul.outerWidth( Math.max( + ul.width( "" ).outerWidth(), + this.element.outerWidth() + ) ); + }, + + _renderMenu: function( ul, items ) { + var self = this; + $.each( items, function( index, item ) { + self._renderItem( ul, item ); + }); + }, + + _renderItem: function( ul, item) { + return $( "<li></li>" ) + .data( "item.autocomplete", item ) + .append( $( "<a></a>" ).text( item.label ) ) + .appendTo( ul ); + }, + + _move: function( direction, event ) { + if ( !this.menu.element.is(":visible") ) { + this.search( null, event ); + return; + } + if ( this.menu.first() && /^previous/.test(direction) || + this.menu.last() && /^next/.test(direction) ) { + this.element.val( this.term ); + this.menu.deactivate(); + return; + } + this.menu[ direction ]( event ); + }, + + widget: function() { + return this.menu.element; + } +}); + +$.extend( $.ui.autocomplete, { + version: "@VERSION", + 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 ); + }); + } +}); + +}( jQuery )); +