Andreas Niekler created FLEX-33577:
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Summary: scrollToIndex produces errors if the index to scroll to
is not visible in AdvancedDataGrid
Key: FLEX-33577
URL: https://issues.apache.org/jira/browse/FLEX-33577
Project: Apache Flex
Issue Type: Bug
Components: Advanced Data Grid
Affects Versions: Apache Flex 4.9.0
Environment: FlashBuilder 4.6
Reporter: Andreas Niekler
Hello,
i created a custom column ADG where i import new data via BlazeDS. Normally the
backing list contains 50 elements. All those Elements represent a dataset which
i can load into a data view and than do some edits. For a better workflow i
added a "done, save & next" button which changes the selected index to the next
element of the ADG and loads it. To follow the selected item in the ADG i
implemented the scrollToIndex function within that process. Now the behavior:
The scrollToIndex function does nothing while the slected indexes are in the
visible part of the ADG. Once i reach an index of an element that is not
visible yet the selectedIndex = selectedIndex + 1 produces the MinInteger Value
because this next element isn't rendered yet. I made a workaround by forwarding
the verticalScrolling by 1 element to surly render the next element but the
scrollToIndex function produces massive errors (FlashPlayer produces 4GB memory
usage and crashes the OS, shows exclamation mark error) when using it with that
invalid index.
Is there a solution to render the next n elements in advance or to deactivate
lazy rendering in ADG's.
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