Flex--主程序与弹出窗口之间传递数据
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程序代码
<?xml version="1.0" encoding="utf-8"?>
<!-- TitleWindowDataTest.mxml
An application that uses custom pop-up TitleWindowData-->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" horizontalAlign="left" layout="vertical"
initialize="initApp()">
<mx:Script><![CDATA[
import mx.containers.TitleWindow;
import mx.managers.PopUpManager;
import mx.collections.ArrayCollection;
[Bindable]public var gsBindMe:String = "Change me!" ; //
[Bindable]private var acDP2:ArrayCollection;
[Bindable]public var acItemsSelected:ArrayCollection; //set by itemClick
private function initApp():void
{
acDP2 = new ArrayCollection();
acDP2.addItem({artist:"Pink Floyd",price:29.99,album:"Meddle"});
acDP2.addItem({artist:"Pink Floyd",price:29.99,album:"More"});
acDP2.addItem({artist:"Genesis",price:22.99,album:"Trespass"});
acDP2.addItem({artist:"Yes",price:22.99,album:"Close to the Edge"});
acDP2.addItem({artist:"King Crimson",price:21.99,album:"Wake of Posiedon"});
}//
private function showTitleWindow():void
{
var titleWindowInstance:TitleWindowData =
TitleWindowData(PopUpManager.createPopUp(this,
TitleWindowData,
false)); //instantiate and show the title window
PopUpManager.centerPopUp(titleWindowInstance);
titleWindowInstance.title = "Non-Modal Title Window Data";//built-in property
titleWindowInstance.width = 400; //built-in property
titleWindowInstance.height = 450; //built-in property
titleWindowInstance.mainApp = this; //Reference to the main app scope
titleWindowInstance.gnMyNumber = parseFloat(tiMyNumber.text); //Pass a simple value to the popup
}
private function showSelectedItems(event:Event):void
{
acItemsSelected = new ArrayCollection(dg2.selectedItems)
}//
]]></mx:Script>
<mx:Label text="Main App" fontSize="18" />
<mx:Text text="Selected Items will be passed into the pop-up. Select an item and click 'Show Title Window' button" width="300"/>
<mx:DataGrid id="dg2" allowMultipleSelection="true" itemClick="showSelectedItems(event)"
dataProvider="{acDP2}" >
<mx:columns>
<mx:Array>
<mx:DataGridColumn headerText="Artist" dataField="artist" />
<mx:DataGridColumn headerText="Price" dataField="price" editable="true"/>
<mx:DataGridColumn headerText="Album" dataField="album" />
</mx:Array>
</mx:columns>
</mx:DataGrid>
<mx:HBox >
<mx:Label text="MyNumber:" width="100"/>
<mx:TextInput id="tiMyNumber" text="99"/>
</mx:HBox>
<mx:HBox >
<mx:Label text="Bind Me" width="100"/>
<mx:TextInput id="tiBindMe" text="{gsBindMe}"
change="gsBindMe = tiBindMe.text"/>
</mx:HBox>
<mx:Button label="Show Title Window (Non-Modal)" click="showTitleWindow()"/>
<mx:HBox >
<mx:Text text="Final Selection: From item selected in pop-up" width="100"/>
<mx:TextInput id="tiFinalSelection"/>
</mx:HBox>
</mx:Application>
自定义组件:TitleWindowData.mxml
程序代码
<?xml version="1.0" encoding="utf-8"?>
<!-- TitleWindowData.mxml
A sample custom pop-up that extends TitleWindow-->
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical"
creationComplete="initComponent()"
showCloseButton="true"
close="closeWindow()">
<mx:Script><![CDATA[
import mx.managers.PopUpManager;
import mx.collections.ArrayCollection;
[Bindable]public var mainApp:TitleWindowDataTest = null;
[Bindable]public var gsMyString:String;
[Bindable]public var gnMyNumber:Number;
[Bindable]public var acItemsSelected:ArrayCollection;
private function initComponent():void
{
}
private function closeWindow():void
{
PopUpManager.removePopUp(this);
}//closeWindow
private function showFinalSelection(oEvent:Event):void
{
mainApp.tiFinalSelection.text = oEvent.target.selectedItem.album;
}//showFinalSelection
]]></mx:Script>
<mx:Text text="The data grid below shows the selectedItems in the data grid in the Main app. This dataProvider is bound to a local variable which is set by Main App datagrid itemClick. Select additional items(ctrl-click) in Main App, they will display here. Select an item here. It will display in Main App 'Final Selection' control." width="300" />
<mx:DataGrid id="dg2" rowCount="3"
dataProvider="{mainApp.acItemsSelected}"
change="showFinalSelection(event)" >
<mx:columns>
<mx:Array>
<mx:DataGridColumn headerText="Artist" dataField="artist" />
<mx:DataGridColumn headerText="Price" dataField="price" editable="true"/>
<mx:DataGridColumn headerText="Album" dataField="album" />
</mx:Array>
</mx:columns>
</mx:DataGrid>
<mx:HBox >
<mx:Label id="lblMyNumber" text="{gnMyNumber}" width="100"/>
<mx:Text text="Bound to local variable set at pop-up. Changes to Main App control do NOT change this" width="200" />
</mx:HBox>
<mx:HBox >
<mx:Label text="{mainApp.gsBindMe}" width="100"/>
<mx:Text text="Bound to mainApp local variable via passed in reference. Changes in Main App DO change this." width="200" />
</mx:HBox>
</mx:TitleWindow>
本文转自:http://www.51as.com/flex/ZhuChengXuYuTanChuChuangKouZhiJianChuanDiShuJu/
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