(function( $ ) {
		$.widget( "ui.combobox", {
			options: {
				editable: false,
				ajax: false,// 是否异步请求数据
				datatablelogicid: "",// 表id
				childtarget: "",// 子checkbox控件
				textcolumn: "",// 显示列
				autoload : true, // 自动加载
				valuecolumn: "",// 存储列
				type: "",// 类型（singleselect：单级下拉列表，multiselect：多级下拉列表）
				property: {},// 查询条件应为{key:value}格式的字符串
				id: "",// input 的id
				button: true,
				onselect: function(){},// 选中事件
				afteraddoptions: function(){}// 添加options后事件
			},
			_create: function() {
				var input,
					that = this,
					select = this.element.hide(),
					wrapper = this.wrapper = $( "<div>" )
						.addclass( "ui-combobox" )
						.attr("style", select.attr("style"))
						.show()
						.insertafter( select );
				// 判断是否异步请求
				if(this.options.ajax && this.options.autoload){
					addoptions(select, that, {});
				}
				var selected = select.children( ":selected" ),
				value = selected.val() ? selected.text() : "";
					
				function removeifinvalid(element) {
					var value = $( element ).val(),
						matcher = new regexp( "^" + $.ui.autocomplete.escaperegex( value ) + "$", "i" ),
						valid = false;
					select.children( "option" ).each(function() {
						if ( $( this ).text().match( matcher ) ) {
							this.selected = valid = true;
							return false;
						}
					});
					if ( !valid ) {
						// 如果当前文本框为可编辑状态
						if(that.options.editable){
							var firstoption = select.children( "option" )[0];
							$(firstoption).attr("value", value);
							firstoption.selected = true
							return false;
						}
						// remove invalid value, as it didn't match anything
						$( element )
							.val( "" )
							.attr( "title", value + " 未搜索到匹配项" );
						select.val( "" );
						input.data( "autocomplete" ).term = "";
						return false;
					}
				}

				input = $( "<input>" )
					.appendto( wrapper )
					.val( value )
					.css("height", select.height())
					.attr("id", this.options.id)
					.attr( "title", "" )
					.addclass( "ui-state-default ui-combobox-input" )
					.addclass(select.attr("class"))
					.autocomplete({
						delay: 0,
						minlength: 0,
						source: function( request, response ) {
							var matcher = new regexp( $.ui.autocomplete.escaperegex(request.term), "i" );
							response( select.children( "option" ).map(function() {
								var text = $( this ).text();
								if ( this.value && ( !request.term || matcher.test(text) ) )
									return {
										label: text.replace(
											new regexp(
												"(?![^&;]+;)(?!<[^<>]*)(" +
												$.ui.autocomplete.escaperegex(request.term) +
												")(?![^<>]*>)(?![^&;]+;)", "gi"
											), "<strong>$1</strong>" ),
										value: text,
										option: this
									};
							}) );
							
						},
						select: function( event, ui ) {
							ui.item.option.selected = true;
							if($(ui.item.option).data("bindeddata") != null){
								that.options.onselect($(ui.item.option).data("bindeddata"));
							}else{
								that.options.onselect({
									value:$(ui.item.option).val(),
									text: $(ui.item.option).text()
								});
							}
							if(that.options.type == "multiselect"){
								// 多选情况刷新子集
								if(that.options.childtarget){
									that.options.childtarget.combobox("refresh", {id: $(ui.item.option).attr("id")});
								}
							}
							that._trigger( "selected", event, {
								item: ui.item.option
							});
						},
						change: function( event, ui ) {
							if ( !ui.item )
								return removeifinvalid( this );
						}
					})
					.addclass( "ui-widget ui-widget-content ui-corner-left" );

				input.data( "autocomplete" )._renderitem = function( ul, item ) {
					return $( "<li  style='width: 100px;'>" )
						.data( "item.autocomplete", item )
						.append( "<a style='width: 100px;'><pre>" + item.label + "</pre></a>" )
						.appendto( ul );
				};
				if(that.options.button){
					input.css({
						width: "90%",
						"line-height": input.height() + "px"
							
					});
					$( "<a>" )
					.attr( "tabindex", -1 )
					.attr( "title", "显示所有" )
					.css("height", select.height())
					.appendto( wrapper )
					.button({
						icons: {
							primary: "ui-icon-triangle-1-s"
						},
						text: false
					})
					.removeclass( "ui-corner-all" )
					.addclass( "ui-corner-right ui-combobox-toggle" )
					.click(function() {
						// close if already visible
						if ( input.autocomplete( "widget" ).is( ":visible" ) ) {
							input.autocomplete( "close" );
							removeifinvalid( input );
							return;
						}

						// work around a bug (likely same cause as #5265)
						$( this ).blur();

						// pass empty string as value to search for, displaying all results
						input.autocomplete( "search", "" );
						input.focus();
					});
				}else{
					input.css({
						width: "100%",
						"line-height": input.height() + "px"
							
					});
				}
				this.element.data("input", input);
			},
			setval: function(value) {
				this.element.val(value);
				var input = this.element.data("input");
				input.val(this.element.children(":selected").text());
			},
			refresh: function(data) {
				// 刷新
				var select = this.element;
				
				// 判断是否异步请求
				if(this.options.ajax){
					$(select).empty();
					// 文本框
					var input = this.element.data("input");
					input.val("");
					addoptions(select, this, {selectpid: data.id});
				}
			},
			destroy: function() {
				this.wrapper.remove();
				this.element.show();
				$.widget.prototype.destroy.call( this );
			}
		});
		// 在异步请求的情况下使用ajax添加option
		function addoptions(element, that, property){
			// 添加一个空的option
			 $("<option value=\"\"></option>")
						.appendto(element);
			$.ajax({
				url: contextrootpath + "/release/searchoptionsajax.xhtml",
				type: "post",
				datatype: "json",
				async:false,
				data: {
					"datatablelogicid": that.options.datatablelogicid,
					"property":  json.stringify($.extend(that.options.property, property)),
					"formlogicid": that.options.formlogicid,
					"type": that.options.type,
					"infopathlogicid": that.options.infopathlogicid
					},
				success: function(datas){
					if(datas.error){
						alert(datas.msg);
						return;
					}
					$.each(datas, function(k, data){
						$("<option id=\"" + data["selectlogicid"] + "\" value=\"" + data[that.options.valuecolumn] + "\">"
								+ data[that.options.textcolumn] + "</option>")
								.data("bindeddata",data)
								.appendto(element);
					});
					element.val(that.element.attr("defaultvalue"));
					that.options.afteraddoptions.call(that.element, datas);
				}
			});
			
		}
	})( jquery );