Peformance issue rendering Arabic in an Item Renderer

Question

Background- Flash Player 10.2.152.32- SDK 4.5.0.19786- text being displayed in Arabic- DataGrid has 12 columns and displays less than 20,000 rows- using RichTextEditor on a TextArea within an item rendererPerformance Problem- DataGrid population is done is an acceptable timeframe (consistantly populated in less than 10 seconds)- the scrollbar hangs for several seconds when you click on it and drag- "you can’t scroll through the fields at all with any reasonable performance"Testing Done- switching to the Spark component seems to make it worse- limiting the number of rows of data doesn’t help the performance- removing all code within the item renderer (applying a blank item renderer) doesn’t help the performance- removing the item renderer makes the scroll bars work perfectly (it fixes the problem)Issue- need the item renderer for application functionalityAre there any known problems with FTE rendering Arabic?Thanks,Steve

GordonSmith · Answer

> using RichTextEditor on a TextArea within an item renderer

Are you talking about <mx:RichTextEditor> and <mx:TextArea>? As far as I know these don't use FTE/TLF and therefore don't handle Arabic correctly.

> DataGrid has 12 columns and displays less than 20,000 rows

Do you mean that every row displays 12 RichTextEditors? That's a lot of editable text.

You could try using a non-editable item renderer based on FTE/TLF such as <s:Label> or <s:RichText>, and having an item editor that uses <s:RichEditableText> or <s:TextArea>.

Gordon Smith

Adobe Flex SDK Team

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