Petteri Tuovila created FLEX-33282:
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Summary: Performance issue with multiple item renderers
Key: FLEX-33282
URL: https://issues.apache.org/jira/browse/FLEX-33282
Project: Apache Flex
Issue Type: Bug
Components: Spark: DataGrid
Affects Versions: Adobe Flex SDK 4.6 (Release)
Environment: At least on mac
Reporter: Petteri Tuovila
The problem is that the ItemRenderer's prepare is called for every visible
ItemRenderer when the mouse is moved over the grid and when starting and
finishing item editing. Of course that prepare function should be called when
the renderers are first brought to stage at the initialization and when you
scroll up or down outside the screen when the renderers are recycled.
We are using datasets that well fit the screen with multiple columns so this
can really make the program a little sluggish to use. When starting to edit
there's easily a second or two delay before editor appears, after the indicator
catches up with the mouse.
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