Flex中让鼠标移至AdvancedDataGrid的行上不自动修改显示效果

公司项目中出于性能考虑，把mx:Repeater控件换成了mx:AdvancedDataGrid控件来显示。

注意：事实上发现，mx:Repeater控件在数据大的时候性能很差。

但是当换成AdvancedDataGrid发现，鼠标在Grid上移动Flex自动为焦点所在行修改css，为屏蔽该效果，自定义如下控件:

ApmAdvancedDataGrid.as

package com.nauproject.apm.common.custom
{
import flash.events.MouseEvent;

import mx.controls.AdvancedDataGrid;
import mx.core.mx_internal;
use namespace mx_internal;

public class ApmAdvancedDataGrid extends AdvancedDataGrid
{
public function ApmAdvancedDataGrid()
{
super();
}

override protected function mouseOverHandler(event:MouseEvent):void {
}

override protected function mouseDownHandler(event:MouseEvent):void {
}
}
}

ApmAdvancedDataGridColumn.as

package com.nauproject.apm.common.custom
{
import mx.controls.advancedDataGridClasses.AdvancedDataGridColumn;

[DefaultProperty("apmColumn")]

public class ApmAdvancedDataGridColumn extends AdvancedDataGridColumn
{
public function ApmAdvancedDataGridColumn(columnName:String=null)
{
super(columnName);
}

}
}

用法示例：

<custom:ApmAdvancedDataGrid id="reqResearchSeeds" headerHeight="0"
sortableColumns="false"
selectionMode="multipleCells"
alternatingItemColors="[0xccffcc, 0xfafad2]"
variableRowHeight="true"
designViewDataType="flat"
borderStyle="none"
verticalGridLineColor="#FFFFFF"
themeColor="#FFFFFF"
width="100%"
height="100%">
<custom:columns>
<custom:ApmAdvancedDataGridColumn headerText="Album" dataField="album" width="50"/>
<custom:ApmAdvancedDataGridColumn itemRenderer="com.nauproject.apm.common.custom.LabelTextReqRes"/>
</custom:columns>
</custom:ApmAdvancedDataGrid>

注意：LabelTextReqRes.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script>
<!--[CDATA[
import mx.collections.ArrayCollection;
import mx.controls.AdvancedDataGrid;
]]-->
</mx:Script>
<mx:VBox>
<mx:Label id="lab1" text="◆研究テーマ"/>
<mx:Text id="txt1" htmlText="{data.rthema}" width="455" y="{lab1.height}"/>
<mx:Label id="lab2" text="◆キーワード" y="{lab1.height + txt1.height}"/>
<mx:Text id="txt2" htmlText="{data.keyword}" width="455" y="{lab1.height + txt1.height + lab2.height}"/>
<mx:Label id="lab3" text="◆研究の特徴" y="{lab1.height + txt1.height + lab2.height + txt2.height}"/>
<mx:Text id="txt3" htmlText="{data.rtoku}" width="455" y="{lab1.height + txt1.height + lab2.height + txt2.height + lab3.height}"/>
<mx:Label id="lab4" text="◆技術移転の可能性" y="{lab1.height + txt1.height + lab2.height + txt2.height + lab3.height + txt3.height}"/>
<mx:Text id="txt4" htmlText="{data.rkanousei}" width="455" y="{lab1.height + txt1.height + lab2.height + txt2.height + lab3.height + txt3.height + lab4.height}"/>
</mx:VBox>
</mx:Canvas>