Question

我创建了一个错误状态的GridItemRenderer，在验证data[column.dataField]内容后显示红色边框线，除了滚动工作之外的所有内容...... 让我们说顶级项目处于错误状态，其他一切都很好，因为data[column.dataField]它只在顶部单元格中为空，然后我向下滚动一行，当新行即将显示时，我的重写getCurrentRendererState被调用，并检查它是否为空，它应该更改为正常状态，但这是事情，此时，data[column.dataField]仍然有顶部的行值，所以在进行验证后，data[column.dataField]仍然是null，即使当前单元格显示当前数据... 那么，我怎样才能获得当前的单元格值？

<fx:Script>
    <![CDATA[
        import custom_events.DataGridValidationEvent;
        private function creationComplete():void{
            owner.parent.parent.addEventListener(DataGridValidationEvent.VALIDATE,doValidation);
        }
        private function doValidation(e:DataGridValidationEvent):void{
            currentState=data[column.dataField]?"normal":"error";
        }
        override public function get label():String{
            return lblCell.text;
        }
        override public function set label(value:String):void{
            currentState=data?data[column.dataField]?"normal":"error":"normal"
            lblCell.text=value;
        }
        override protected function getCurrentRendererState():String{
            return data?data[column.dataField]?"normal":"error":"normal";
        }
    ]]>
</fx:Script>
<s:states>
    <s:State name="normal"/>
    <s:State name="error"/>
</s:states>
<s:Rect left="1" right="0" top="1" bottom="0" includeIn="error">
    <s:stroke>
        <s:SolidColorStroke color="0xFF001A" weight="1"/>
    </s:stroke>
</s:Rect>
<s:Label id="lblCell" width="100%" height="100%" verticalAlign="middle"
         paddingLeft="5" paddingRight="5" paddingTop="3" maxDisplayedLines="1"
         showTruncationTip="true"/>

Answer 1

听取数据更改事件，然后进行验证，现在一切都很好。

<fx:Script>
    <![CDATA[
        import custom_events.DataGridValidationEvent;
        private function creationComplete():void{
                owner.parent.parent.addEventListener(DataGridValidationEvent.VALIDATE,doValidation);
                addEventListener(FlexEvent.DATA_CHANGE,setState);
            }
            private function doValidation(e:DataGridValidationEvent):void{
                currentState=data[column.dataField]?"normal":"error";
            }
            private function setState(e:FlexEvent):void{
                currentState=data[column.dataField]?"normal":"error";
            }
            override public function get label():String{
                return lblCell.text;
            }
            override public function set label(value:String):void{
                currentState=data?data[column.dataField]?"normal":"error":"normal"
                lblCell.text=value;
            }
            override protected function getCurrentRendererState():String{
                return currentState;
            }
    ]]>
</fx:Script>
<s:states>
    <s:State name="normal"/>
    <s:State name="error"/>
</s:states>
<s:Rect left="1" right="0" top="1" bottom="0" includeIn="error">
    <s:stroke>
        <s:SolidColorStroke color="0xFF001A" weight="1"/>
    </s:stroke>
</s:Rect>
<s:Label id="lblCell" width="100%" height="100%" verticalAlign="middle"
         paddingLeft="5" paddingRight="5" paddingTop="3" maxDisplayedLines="1"
         showTruncationTip="true"/>

flex Datagrid itemRenderer重写getCurrentState

1 个答案: