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flex Datagrid checkboxȫѡ

Datagrid headerRenderer checkbox to select checkboxes in the row
flex Datagrid checkboxȫѡ
Cookbooks
Ô­ÎÄ£ºhttp://cookbooks.adobe.com/post_Datagrid_headerRenderer_checkbox_to_select_checkbo-7262.html
ÏÂÔØ £ºsrc1.zip
CheckBoxHeaderColumn.as
package
{
import mx.controls.dataGridClasses.DataGridColumn;

[Event(name="click", type="flash.events.MouseEvent")]
public class CheckBoxHeaderColumn extends DataGridColumn
{
public function CheckBoxHeaderColumn(columnName:String=null)
{
super(columnName);
}
/**is the checkbox selected**/
public var selected:Boolean = false;

}
}  
CheckBoxHeaderRenderer.as
package
{


import flash.events.MouseEvent;

import mx.controls.CheckBox;
import mx.controls.DataGrid;
import mx.events.DataGridEvent;
public class CheckBoxHeaderRenderer extends CheckBox
{



public function CheckBoxHeaderRenderer()
{
super();
//addEventListener("click", clickHandler);
}
private var _data:CheckBoxHeaderColumn;
override public function get data():Object
{
return _data;
}

override public function set data(value:Object):void
{
_data = value as CheckBoxHeaderColumn;
DataGrid(listData.owner).addEventListener(DataGridEvent.HEADER_RELEASE, sortEventHandler);
selected = _data.selected;
}
private function sortEventHandler(event:DataGridEvent):void
{
if (event.itemRenderer == this)
event.preventDefault();
}
override protected function clickHandler(event:MouseEvent):void
{
super.clickHandler(event);
data.selected = selected;
data.dispatchEvent(event);
}



}
}  
CheckBoxItemRenderer.as
package
{
import flash.events.MouseEvent;

import mx.controls.Alert;
import mx.controls.CheckBox;
import mx.controls.DataGrid;
public class CheckBoxItemRenderer extends CheckBox
{
public function CheckBoxItemRenderer()
{
super();

}
override public function validateProperties():void
{


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