Gary Yang created FLEX-34140:
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Summary: Add oldValue property to Collection event(
CollectionEventKind.REFRESH/CollectionEventKind.RESET )
Key: FLEX-34140
URL: https://issues.apache.org/jira/browse/FLEX-34140
Project: Apache Flex
Issue Type: Task
Components: Collections
Reporter: Gary Yang
For a CollectionEvent, when event kind is
CollectionEventKind.Add REPLACE REMOVE MOVE UPDATE
it is revertable, because for ADD/REMOVE, developers can call REMOVE/ADD, for
MOVE, there's a oldLocation; for REPLACE: the items are PropertyChangeEvent
which has oldValue.
but for CollectionEventKind.REFRESH and RESET, it is NOT revertable!!!
If Flex can add a new oldValue or oldList, ( or depreciated: give developers a
event right before dispatching ), Flex will be better!!!
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