如何使用flex设置行动态的背景?

时间:2010-01-18 15:41:19

标签: actionscript-3 flex3

看看我的来源:

  • 模板:

[代码]

<mx:Script source="ListStatus.as" />

<!-- Template -->
<mx:DataGrid id="grid" width="100%" height="100%" doubleClick="editRecord();">
    <mx:columns  >
        <mx:DataGridColumn width="30" resizable="false" draggable="false">
            <mx:itemRenderer>
                <mx:Component>
                    <mx:LinkButton icon="@Embed('assets/img/delete.png')" click="outerDocument.deleteRecord(event);" />
                </mx:Component>
            </mx:itemRenderer>
        </mx:DataGridColumn>
        <mx:DataGridColumn headerText="Nome" dataField="name" />
        <mx:DataGridColumn headerText="Nome de exibição" dataField="displayName" />
        <mx:DataGridColumn headerText="Cor" dataField="color" />            
    </mx:columns>
</mx:DataGrid>

[/代码]

  • 的ActionScript:

[代码] 进口燃料。阿贾克斯; 进口燃料。模块; import fuel.window.Window;

import mx.controls.Alert; import mx.events.ModuleEvent; import mx.modules.ModuleLoader;

public var win:Window;

/ **  *构造函数  *  *从涡轮齿轮控制器获取数据  * / public function init():void {
    showLoading();     Ajax.requestJSON('/ access / status / getList',{},function(obj:Object):void {         hideLoading();         grid.dataProvider = obj.results;     }); }

/ **  *致电表格编辑记录  * / public function editRecord():void {

try {
    grid.selectedItem.id;                   
} catch(e:Error) {
    Alert.show("Você deve selecionar um registro válido", "Atenção");
    return;
}

var module:ModuleLoader = new ModuleLoader();
module.url = "access/CreateStatus.swf";
module.applicationDomain = ApplicationDomain.currentDomain;
module.addEventListener( ModuleEvent.READY, onModuleReady );

var title_bar:String = "Edição de Status (" + grid.selectedItem.id + ")";

if( this.window ){
    win = this.window.openChild(title_bar, module, 410, 250);
} else {
    win = (parentApplication as Admin).winManager.openWindow(title_bar, module, 410, 250);
}

}

/ **  *呼叫控制器删除记录  * / private function actionDeleteRecord(resp:Object):void {     if(resp.detail == Alert.YES){         grid.enabled = false;

    Ajax.requestJSON( "/access/status/delete", { 'id' : grid.selectedItem.id }, function( obj:Object ):void {
        if (obj.error == false) {
            Alert.show("Registro deletado com sucesso", "Confirmação");
        } else {
            Alert.show(obj.msg, "Erro");
        }

        init();             
    });

    grid.enabled = true;
}

}

/ **  *呼叫删除记录的请求  * / public function deleteRecord(event:Event):void {     Alert.show(“EstaoperaçãoNóopoderásersedesfeita。\ nDeseja mesmo remover o status \”“+ grid.selectedItem.displayName +”\“?”,“Confirmação”,Alert.YES | Alert.NO,this,actionDeleteRecord); }

public function onModuleReady(event:ModuleEvent):void {
    var loader:ModuleLoader = event.target as ModuleLoader;

var m:* = loader.child as IModule;
if( m ) m.addEventListener( Event.RENDER, function runModule(e:Event):void{
    m.setId(grid.selectedItem.id);
    m.window = win;                 
    m.removeEventListener( Event.RENDER, runModule );
});

}; [/代码]

我需要使用colorProvider中存在的颜色值来设置行的背景。

对不起我的无知,这是我的第一个使用flex的项目。

感谢的!

1 个答案:

答案 0 :(得分:0)

解决方案是创建一个扩展DataGrid的类并覆盖drawRowBackground方法,该方法负责在行项后面绘制一个彩色矩形。

The drawRowBackground method传递一个默认颜色,以及当前数据项的索引,因此您可以检索当前项,从中获取自定义颜色属性,并将该颜色传递给super.drawRowBackground ()打电话。

override protected function drawRowBackground(s:Sprite, rowIndex:int, 
                                                y:Number, height:Number,
                                                color:uint, dataIndex:int):void 
{
    if (dataIndex < dataProvider.length && dataProvider[dataIndex])
    {
        color = dataProvider[dataIndex].color;
    }
    super.drawRowBackground(s, rowIndex, y, height, color, dataIndex);
}