That error indicates a recycling problem. Does it happen if you use the default renderer instead of your custom renderer? Could your custom renderer be changing the name property of the renderer? Can you reproduce it in a simple test case?
Alex Harui Flex SDK Developer Adobe Systems Inc.<http://www.adobe.com/> Blog: http://blogs.adobe.com/aharui From: [email protected] [mailto:[email protected]] On Behalf Of Simon Bailey Sent: Thursday, March 12, 2009 4:46 AM To: [email protected] Subject: Re: [flexcoders] ListBase error Here is the debug trace: ypeError: Error #1010: A term is undefined and has no properties. at mx.controls.listClasses::ListBase/shiftRow()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:6975] at mx.controls.dataGridClasses::DataGridBase/shiftRow()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\dataGridClasses\DataGridBase.as:2170] at mx.controls.listClasses::ListBase/scrollVertically()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:6677] at mx.controls::DataGrid/scrollVertically()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\DataGrid.as:5098] at mx.controls.listClasses::ListBase/set verticalScrollPosition()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:1314] at mx.controls::DataGrid/set verticalScrollPosition()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\DataGrid.as:906] at mx.controls::DataGrid/scrollHandler()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\! DataGrid.as:1942] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.core::UIComponent/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:9298] at mx.controls.scrollClasses::ScrollBar/http://www.adobe.com/2006/flex/mx/internal::dispatchScrollEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\scrollClasses\ScrollBar.as:1261] at mx.controls.scrollCla! sses::ScrollThumb/mouseMoveHandler()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\scrollClasses\ScrollThumb.as:206] On 12 Mar 2009, at 11:35, Simon Bailey wrote: Hi all, Any ideas why on scroll of a datagrid the #1010 error is firing from the ListBase class on this line of code: rowMap[r.name].rowIndex = newIndex! ; I have seen this problem in the past with Flex 2 and funnily enough have not seen it since, now its rearing its head again. Using the below code (love the comments by the Adobe team) and digging in the debugger I see that r.name (CustomGridRenderer3134) is not showing in list of items on the rowMap hence the error being thrown? protected function shiftRow(oldIndex:int, newIndex:int, numCols:int, shiftItems:Boolean):void { var r:IListItemRenderer; for (var j:int = 0; j < numCols; j++) { r = listItems[oldIndex][j]; if (shiftItems) { listItems[newIndex][j] = r; rowMap[r.name].rowIndex = newIndex; } // this is sort of a hack to a! ccomodate the fact that // scrolling down does a splice which throws off these values. // probably better to call shiftRow with different parameters? else rowMap[r.name].rowIndex = oldIndex; } if (shiftItems) rowInfo[newIndex] = rowInfo[oldIndex]; } Cheers, Simon
