问题可以概括为当点击datagrid中的项目时,文本区域显示项目的值,但是这里的组件是独立的,因此需要调度事件。
My mxml component file :
<?xml version="1.0" encoding="utf-8"?>
<mx:DataGrid xmlns:mx="http://www.adobe.com/2006/mxml" itemClick="itemClickEvent(event);" creationComplete="init()">
<mx:Metadata>
[Event(name="IdSelected", type="one.IdEvent")]
</mx:Metadata>
<mx:Script>
<![CDATA[ import genericReport.*;
import crewUtilization.*;
import utils.*;
import studies.*;
import mx.rpc.events.FaultEvent;
import mx.rpc.events.ResultEvent;
import mx.controls.Alert;
import mx.events.ListEvent;
private function itemClickEvent(event:ListEvent):void
{
var _study:Object=event.currentTarget.selectedItem.study;
dispatchEvent(new IDEvent(_ID));
}
]]>
</mx:Script>
<mx:columns>
<mx:DataGridColumn dataField="name" />
<mx:DataGridColumn dataField="userId" />
</mx:columns>
</mx:DataGrid>
/////////////////////////////////////////////// ////////////////
这是我的主要MXML应用程序文件:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:custom="*">
<mx:TitleWindow label="Scenario Creation" xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns:ns1="ccCreation.*">
<mx:Label text="CC CREATION" width="100%" />
<mx:VBox width="100 %" styleName="scenariovboxStyle">
<custom:studySelector id="dg" />
</mx:VBox>
</mx:TitleWindow>
</mx:Application>
答案 0 :(得分:0)
我认为studyId可能更好地引用dataGrid而不是引用studyId的dataGrid。您可以将其添加到主mxml:
<mx:TextArea id="studyId" text="{dataGrid.selectedItem.Study}"/>
这应该有效,因为TextArea.text将响应DataGrid.selectedItem的属性更改事件,因此每当选择更改时它都会更改。
编辑:调度事件:
您可以从代码中的任何位置发送事件,并且听众将能够收听该事件。例如:
<mypackage:MyComponent>
...
private function foo():void
{
dispatchEvent(new MouseEvent(MouseEvent.CLICK)); // Dispatches a mouse event whenever foo is called.
}
现在您可以收听该事件:
<mypackage:MyComponent id="myComponent"/>
...
myComponent.addEventListener(MouseEvent.CLICK, mouseClickHandler);
private function mouseClickHandler(event:MouseEvent):void
{
... // code to handle that event here.
}
希望这有帮助!
<mx:MainComponent creationComplete="init()" ...>
...
private function init(event:Event):void
{
...
customComponent.addEventListener(StudyEvent.STUDYSELECTED, studySelectedListener);
...
}
private function studySelectedListener(event:StudyEvent):void
{
studyid.text = event.study.studyId; // or wherever you store your studyId value
...
}
...
<mx:MainComponent/>
当您从customComponent触发StudyEvent.STUDYSELECTED事件时,会发生什么,它将被您的main函数捕获,并且将调用studySelectedListener。