Use a NumericStepper control to edit the Price column of a DataGrid control.
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<!-- itemRenderers\events\BeginEditEventAccessEditor.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx">
<fx:Script>
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}
]);
// Handle the itemEditBegin event.
private function modifyEditedData(event:DataGridEvent):void {
// Get the name of the column being editted.
var colName:String = myDataGrid.columns[event.columnIndex].dataField;
if(colName=="Price"){
// Handle the event here.
event.preventDefault();
// Creates an item editor.
myDataGrid.createItemEditor(event.columnIndex,event.rowIndex);
// All item editors must implement the IDropInListItemRenderer interface
// and the listData property.
// Initialize the listData property of the editor.
IDropInListItemRenderer(myDataGrid.itemEditorInstance).listData =
IDropInListItemRenderer(myDataGrid.editedItemRenderer).listData;
// Copy the cell value to the NumericStepper control.
myDataGrid.itemEditorInstance.data = myDataGrid.editedItemRenderer.data;
// Add 20 percent to the current price.
NumericStepper(myDataGrid.itemEditorInstance).value +=0.2 * NumericStepper(myDataGrid.itemEditorInstance).value;
}
}
</fx:Script>
<mx:DataGrid id="myDataGrid" dataProvider="{myDP}"
editable="true" itemEditBegin="modifyEditedData(event);" rowHeight="60">
<mx:columns>
<mx:DataGridColumn dataField="Artist" />
<mx:DataGridColumn dataField="Album" width="130" />
<mx:DataGridColumn dataField="Price"
editorDataField="value">
<mx:itemEditor>
<fx:Component>
<mx:NumericStepper stepSize="0.01" maximum="500" />
</fx:Component>
</mx:itemEditor>
</mx:DataGridColumn>
</mx:columns>
</mx:DataGrid>
</s:Application>
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