flex3 comboBox 变身可输入可过滤搜索下拉选项，实例代码片段

矫情吗；* 2022-06-16 10:39 154阅读 0赞

<fx:Script>
    		<![CDATA[
     			...............
    			private var enterpriseInfoRO:RemoteObject=ServiceLocator.getInstance().getRemoteObject("enterpriseInfo_RO_ID") as RemoteObject;
    			private var reportRO:RemoteObject=ServiceLocator.getInstance().getRemoteObject("reportRO") as RemoteObject;
    
    
    			[Bindable]
    			private var enterprise_info:Array=[];
    			[Bindable] 
    			public var inputEStr:String;
    			
    			private var checkBox:CheckBox;
    			[Event(name="onDocumentLoadedError", type="flash.events.ErrorEvent")]
    			
    			............
    
    			//加载企业信息
    			public function loadEnterpriseInfo():void
    			{
    				enterpriseInfoRO.getEnterprisesListByTID(cityInfo_CB_ID.selectedItem.value);
    				enterpriseInfoRO.addEventListener(ResultEvent.RESULT, enterpriseInfo_Handle);
    			}
    
    			public function enterpriseInfo_Handle(e:ResultEvent):void
    			{
    				enterpriseInfoRO.removeEventListener(ResultEvent.RESULT, enterpriseInfo_Handle);
    				if (e.result != null)
    				{
    					/**********返回列表*************/
    					var tempList:ArrayCollection=e.result as ArrayCollection;
    					var arr:Array=tempList.toArray();
    					enterprise_info=[];
    					for (var a in arr)
    					{
    						enterprise_info.push({label: arr[a][1], value: arr[a][0]});
    					}
    					enterpriseInfo_CB_ID.selectedIndex=0;
    					//flag=true;
    					loadReport();
    				}
    			}
    
    			//加载报表信息
    			public function loadReport():void
    			{
    				currentState='state1';
    				inputEStr=enterpriseInfo_CB_ID.text;
    				if (enterpriseInfo_CB_ID.selectedItem != null)
    				{
    
    					reportRO.getReportInfo(enterpriseInfo_CB_ID.selectedItem.value, time_ID.getTime_flag(), time_ID.getDate());
    					reportRO.addEventListener(ResultEvent.RESULT, reportInfo_Handle);
    				}
    			}
    			
    			protected function search_keyUpHandler(event:KeyboardEvent):void
    			{
    				if(event.keyCode.toString()=='32'||event.keyCode.toString()=='13'||event.keyCode.toString()=='8'){
    					inputEStr=enterpriseInfo_CB_ID.text;
    					enterpriseInfoRO.getEnterprisesListByValue(cityInfo_CB_ID.selectedItem.value,StringUtil.trim(inputEStr));
    					enterpriseInfoRO.addEventListener(ResultEvent.RESULT,_result_enterprise_bySearch); 
    				}
    			}
    			
    			private  function _result_enterprise_bySearch(e:ResultEvent):void{
    				enterpriseInfoRO.removeEventListener(ResultEvent.RESULT,_result_enterprise_bySearch);
    				if(e.result != null){
    					/**********返回列表*************/
    					var tempList: ArrayCollection = e.result as ArrayCollection;
    					var arr: Array = tempList.toArray();
    					var index:int=0;
    					enterprise_info=[]; 
    					for(var a in arr)
    					{
    						enterprise_info.push({label:arr[a][0],value:int(arr[a][1])});
    						index++
    					}
    
    					enterpriseInfo_CB_ID.text=inputEStr;
    					enterpriseInfo_CB_ID.open();
    				}
    				
    			}
    			public function reportInfo_Handle(e:ResultEvent):void
    			{
    				reportRO.removeEventListener(ResultEvent.RESULT, reportInfo_Handle);
    				report_group_id.removeAllElements();
    				if (e.result != null)
    				{
    					/**********返回列表*************/
    					var tempList:ArrayCollection=e.result as ArrayCollection;
    					var arr:Array=tempList.toArray();
    					for (var a in arr)
    					{
    						var vGroup:VGroup=new VGroup();
    						
    						var image:Image=new Image();
    						image.source=(String(arr[a][3]) == "0" ? "assets/png/report.png" : "assets/png/report2.png");
    						image.name=String(arr[a][2]);
    						image.useHandCursor="false";
    						image.buttonMode="true";
    						image.mouseChildren="false";
    						image.addEventListener(MouseEvent.CLICK, reportDetail);
    						
    						vGroup.addElement(image);
    						
    						var hGroup:HGroup=new HGroup();
    						
    						var label:Label=new Label();
    						label.text="表" + arr[a][1];
    						
    						var cb:CheckBox=new CheckBox();
    						cb.label="审核";
    						cb.selected=(String(arr[a][3]) == "0" ? false : true);
    						cb.id=String(arr[a][0])+"##"+String(arr[a][2]);
    						cb.addEventListener(Event.CHANGE,cb_change);
    						
    						hGroup.addElement(label);
    						hGroup.addElement(cb);
    						vGroup.addElement(hGroup);
    						report_group_id.addElement(vGroup);
    						
    					}
    					enterpriseInfo_CB_ID.text=inputEStr;
    				}
    			}
    
    		
    
    
    
    		]]>
    	</fx:Script>
    
    
    
    	<s:BorderContainer width="100%"
    				..............		
    				<mx:FormItem label="企业:"
    							 indicatorGap="0">
    					<mx:ComboBox id="enterpriseInfo_CB_ID"
    								 dataProvider="{enterprise_info}"
    								 selectedIndex="0"
    								 editable="true"
    								 minWidth="100"
    								 change="loadReport()"
    								 keyUp="search_keyUpHandler(event)"
    								 width="200"/>
    				</mx:FormItem>
    
    				..............
    	</s:BorderContainer>