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https://issues.apache.org/jira/browse/FLEX-34247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Harui resolved FLEX-34247.
-------------------------------
Resolution: Fixed
in 592b45fa219af46592f30ad712b739ac606ed296
Added a ContainerController flag "startComposeFromBeginning" in case some
scenario really needs to compose from the beginning, but 700+ mustella tests
passed without composing from the beginning (with no failures).
> Performance with TextArea using TLF
> ------------------------------------
>
> Key: FLEX-34247
> URL: https://issues.apache.org/jira/browse/FLEX-34247
> Project: Apache Flex
> Issue Type: Bug
> Components: Spark: TextArea
> Affects Versions: Apache Flex 4.12.0
> Environment: Win 7 64 Bit, FP 13
> Reporter: Benjamin Ludwig
> Assignee: Alex Harui
> Labels: regression
>
> I run into performance issues with TextArea with Apache Flex 4.12.
> After pasting a text of approx. 400000 chars into TextArea, it freezes for
> some time but becomes responsive again. Then I noticed the follwing:
> In Flex 4.6: I can enter chars into TextArea at any speed without any
> problems.
> In 4.12: the FlashPlayer freezes on each char entered for some time,
> rendering TextArea for long texts unsable.
> I know there is much effort in TLF, but this feels like a downgrade, because
> handling huge texts in a very fast way was my reason to choose TLF, but this
> was about 2 years ago.
> Do I now have to stay on tlf 1.0 for handling huge texts? Would be sad :(
> regards
> benny
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