FLEX-34458 CAUSE: Because HierarchicalCollectionViewCursor uses both relative and absolute bookmarks in the various collections of the hierarchy, there needs to be special treatment for these two cases. Namely, while it works great with absolute bookmarks to call .movePrevious on the bookmark when something is deleted in the same collection before the selected item, it doesn't work well for the relative CursorBookmark.LAST currentChildBookmark value. Because HierarchicalCollectionViewCursor.collectionChangeHandler() did not make any difference between absolute and relative bookmarks, it used to call .movePrevious() on the bookmark even if it was the absolute value CursorBookmark.LAST.
SOLUTION: In this situation we don't need to .movePrevious() when items above are deleted, because CursorBookmark.LAST will always point to the last item in the collection, no matter what changes happened to that collection. Project: http://git-wip-us.apache.org/repos/asf/flex-sdk/repo Commit: http://git-wip-us.apache.org/repos/asf/flex-sdk/commit/2f1b7682 Tree: http://git-wip-us.apache.org/repos/asf/flex-sdk/tree/2f1b7682 Diff: http://git-wip-us.apache.org/repos/asf/flex-sdk/diff/2f1b7682 Branch: refs/heads/develop Commit: 2f1b76827763b32988b1a1ccc73e603d9d7d788a Parents: 979c7a8 Author: Mihai Chira <mih...@apache.org> Authored: Fri Aug 8 15:54:05 2014 +0100 Committer: Mihai Chira <mih...@apache.org> Committed: Fri Aug 8 16:11:59 2014 +0100 ---------------------------------------------------------------------- .../src/mx/collections/HierarchicalCollectionViewCursor.as | 7 +++++++ 1 file changed, 7 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/flex-sdk/blob/2f1b7682/frameworks/projects/advancedgrids/src/mx/collections/HierarchicalCollectionViewCursor.as ---------------------------------------------------------------------- diff --git a/frameworks/projects/advancedgrids/src/mx/collections/HierarchicalCollectionViewCursor.as b/frameworks/projects/advancedgrids/src/mx/collections/HierarchicalCollectionViewCursor.as index ef89479..1f3244d 100644 --- a/frameworks/projects/advancedgrids/src/mx/collections/HierarchicalCollectionViewCursor.as +++ b/frameworks/projects/advancedgrids/src/mx/collections/HierarchicalCollectionViewCursor.as @@ -1261,6 +1261,9 @@ public class HierarchicalCollectionViewCursor extends EventDispatcher if (parentOfChangingNode == parentOfCurrentNode) { + if(currentChildBookmark == CursorBookmark.LAST) + break; + if (changingNodeAndSiblings != null) { changingCollectionCursor = changingNodeAndSiblings.createCursor(); @@ -1285,6 +1288,10 @@ public class HierarchicalCollectionViewCursor extends EventDispatcher changingNodeCollectionBookmarkIndex = parentOfChangingNodeIndex + 1; changingCollectionCursor = changingNodeAndSiblings.createCursor(); bookmarkInChangingCollection = parentBookmarkStack[changingNodeCollectionBookmarkIndex]; + + if(bookmarkInChangingCollection == CursorBookmark.LAST) + break; + try { changingCollectionCursor.seek(bookmarkInChangingCollection);
