LOL! Your analysis makes perfect sense. My workaround is working fine, so no sweat.
Tracy ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Alex Harui Sent: Wednesday, August 27, 2008 9:21 PM To: [email protected] Subject: RE: [flexcoders] DataGrid change handler: event.selectedItem == true???? w/ CheckBox renderer I think there are times where the DG will pull the data property from the renderer assuming it is the dataprovider item, which in your case it isn't. Maybe we shouldn't do that, but it doesn't matter since Scene7 is going to take over the world :-) From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Tracy Spratt Sent: Wednesday, August 27, 2008 6:13 PM To: [email protected] Subject: [flexcoders] DataGrid change handler: event.selectedItem == true???? w/ CheckBox renderer I have a moderately complex standard DataGrid, using an XMLListCollection dataProvider. In the DG change event handler, I assign a reference to the selectedItem(an XML node) to an instance variabl! e. One column of the DG is a CheckBox ItemRenderer. On the first interaction with the DG, if I directly click the checkbox, without first selecting that row, the event.target.selectedItem is the Booean value, "true", and not the XML node I expect. If I select the row first, then click the CheckBox renderer, the event.target.selectedItem is the xml! node I want. event.target.selectedIndex is reported correctly, so I have a work-around, but does anyone have any suggestions about why this might be happening? I have never seen anything like this before, and have done similar stuff a lot. Obviously, I suspect the CheckBox item renderer is playing a role, and will investigate further, but, any thoughts? The mxml item renderer is pretty short so I'll post it below. Tracy <?xml version="1.0" encoding="utf-8"?> <!-- RendererCheckBox special version, uses Status code (W,A) to set/save value --> <mx:CheckBox xmlns:mx="http://www.adobe.com/2006/mxml <http://www.adobe.com/2006/mxml> " click="onClick()"> <mx:Script><![CDATA[ import mx.controls.dataGridClasses.DataGridListData public var _xmlItem:XML; //holds the current item xml node private var _dgListData:DataGridListData; private var _sDataField:String public var value:String = "W"; //Sets the state of the checkbox to the value of the selected attribute //If there is no selected attribute, create on and set it to false override public function set data(oItem:Object):void { _xmlItem = XML(oItem); _dgListData = DataGridListData(listData); _sDataField = _dgListData.dataField; var sStatusCode:String = _xmlItem[_sDataField]; var bSelected:Boolean = (sStatusCode == "A"); this.selected = bSelected; //set the checkbox state to the local var }//set data /** * center the contentHolder */ override protected function updateDisplayList(w:Number, h:Number):void { super.updateDisplayList(w, h); var n:int = numChildren; for (var i:int = 0; i < n; i++) { var c:DisplayObject = getChildAt(i); if (!(c is TextField)) { c.x = (w - c.width) / 2; c.y = 0; } } } override public function get data():Object { return this.selected; }// //called by click of the checkbox private function onClick():void { if (this.selected) { _xmlItem[_sDataField] = "A"; } else { _xmlItem[_sDataField] = "W"; } dispatchEvent(new Event("IRCbxApprovedClick", true)); } ]]></mx:Script> </mx:CheckBox>
