Roland Zwaga created FLEX-33156:
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Summary: focusInHandler() in spark Scroller doesn't null check
focusManager property before using
Key: FLEX-33156
URL: https://issues.apache.org/jira/browse/FLEX-33156
Project: Apache Flex
Issue Type: Bug
Components: Spark: Scroller
Affects Versions: Adobe Flex SDK 4.6 (Release)
Reporter: Roland Zwaga
Fix For: Adobe Flex SDK Next
the focusHandler() method wrongfully assumes that the focusManager is always a
valid instance. When checking the focusManager property in UIComponent it is
clear that in certain cases this property can return a null value.
So in some cases this can lead to an RTE. I have encountered this once in my
current project but find it very hard to reproduce. Basically a Scroller
instance that was displayed in a popup window gave this RTE after the popup was
removed.
Reproducable or not, I believe the null check should be added seeing the fact
that the focusManager property explicitly returns null in some cases.
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