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https://issues.apache.org/jira/browse/FLEX-33398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581328#comment-13581328
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João Fernandes commented on FLEX-33398:
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Alex the problem is that collection is ICollectionView so we don't have many
options to find the current selected object and in my opinion the combobox
shouldn't reset the current selected item just because there was a refresh in
it's dataProvider. If the selectedItem still exists in the new dataProvider, I
think the selection should be maintained.
> ComboBox loses selectedItem when dataProvider dispatch reset event
> ------------------------------------------------------------------
>
> Key: FLEX-33398
> URL: https://issues.apache.org/jira/browse/FLEX-33398
> Project: Apache Flex
> Issue Type: Bug
> Components: mx: ComboBox
> Reporter: João Fernandes
> Original Estimate: 1m
> Remaining Estimate: 1m
>
> During a reset Event, combobox does reset the selectedItem but doesn't
> respect the fact the current selectedItem might be included in the new source.
> What I propose is to change
> else if (ce.kind == CollectionEventKind.RESET)
> {
> collectionChanged = true;
> if (!selectedIndexChanged && !selectedItemChanged)
> selectedIndex = prompt ? -1 : 0;
> invalidateProperties();
> }
> to
> else if (ce.kind == CollectionEventKind.RESET)
> {
> collectionChanged = true;
> if (!selectedIndexChanged && !selectedItemChanged &&
> !collection.contains(selectedItem))
> selectedIndex = prompt ? -1 : 0;
> invalidateProperties();
> }
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