Flex DataGridでは、iteme EditBeginとiteme EditBeginが協力して、正の浮動小数点の入力を検証した例
Flex DataGridでは、iteme EditBeginとiteme EditBeginが協力して、正の浮動小数点の入力を検証した例
thanks:http://blog.csdn.net/newskl/archive/2009/09/11/4542293.aspx
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml ">
<mx:Script>
<![CDATA[
import mx.utils.StringUtil;
import mx.controls.TextInput;
import mx.events.DataGridEventReason;
import mx.events.DataGridEvent;
import mx.controls.NumericStepper;
import mx.collections.ArrayCollection;
import mx.controls.listClasses.IDropInListItemRenderer;
[Bindable]
private var myDP:ArrayCollection = new ArrayCollection([
{Artist:'Pavement', Album:'Slanted and Enchanted', Price:11.99},
{Artist:'Pavement', Album:'Crooked Rain, Crooked Rain', Price:10.99},
{Artist:'Pavement', Album:'Wowee Zowee', Price:12.99},
{Artist:'Pavement', Album:'Brighten the Corners', Price:11.99},
{Artist:'Pavement', Album:'Terror Twilight', Price:11.99}
]);
//
private function validateItem(event:DataGridEvent):void{
//
if (event.reason == DataGridEventReason.CANCELLED){
return;
}
var input:TextInput = TextInput(_Grid.itemEditorInstance);
var newData:String= TextInput(event.currentTarget.itemEditorInstance).text;
if(event.dataField == "Price"){
var pattern:RegExp = /((0+\.[0-9]*[1-9]{1,})|([1-9][0-9]*\.\d)|([1-9]*))$/;
newData = pattern.exec(newData)[0];
if(StringUtil.trim(newData).length<=0){
event.preventDefault();
input.errorString=" !";
return;
}
}
}
//
private function doItemEditBegin(event:DataGridEvent):void{
var colName:String = _Grid.columns[event.columnIndex].dataField;
if(colName=="Price"){
_Grid.createItemEditor(event.columnIndex,event.rowIndex);
_Grid.itemEditorInstance.data = _Grid.editedItemRenderer.data;
TextInput(_Grid.itemEditorInstance).restrict = "0-9\.";
}
}
]]>
</mx:Script>
<mx:DataGrid id="_Grid" dataProvider="{myDP}"
editable="true"
itemEditBegin="doItemEditBegin(event);"
itemEditEnd="validateItem(event)"
>
<mx:columns>
<mx:DataGridColumn dataField="Artist" />
<mx:DataGridColumn dataField="Album" width="130" />
<mx:DataGridColumn dataField="Price" />
</mx:columns>
</mx:DataGrid>
</mx:Application>
thanks:http://blog.csdn.net/newskl/archive/2009/09/11/4542293.aspx