> Issue: > In TreeTableView, in case of Multiple selection mode, if nested items are > selected, then TreeTableView does not > retain/update the selection correctly when the tree items are permuted(either > by `sort()` or by reordering using > `setAll()`). Cause: > > 1. For permutation, the current implementation uses `TreeModificationEvent` > to update the selection. > 2. The indices from these TreeModificationEvents are not reliable. > 3. It uses the non public `TreeTablePosition` constructor to create > intermediate `TreeItem` positions, this constructor > results in another unexpected TreeModificationEvent while one for sorting is > already being processed. 4. In case of > sorting, there can be multiple intermediate TreeModificationEvents generated, > and for each TreeModificationEvent, the > selection gets updated and results in selection change events being > generated. 5. Each time a TreeItem is expanded or > collapsed, the selection must be shifted, but shifting is not necessary in > case of permutation. All these issues > combine in wrong update of the selection. Fix: > > 1. On each TreeModificationEvent for permutation, for updating the selection, > use index of TreeItem from the > TreeTableView but not from the TreeModificationEvent. 2. Added a new non > public TreeTablePosition constructor, which is > almost a copy constructor but accepts a different row. 3. In case of sorting, > send out the set of selection change > events only once after the sorting is over. 4. In case of setAll, send out > the set of selection change events same as > before.(setAll results in only one TreeModificationEvent, which effectively > results in only one set of selection change > events). `shiftSelection()` should not be called in case of permutation i.e. > call `if (shift != 0)` > Verification: > The change is very limited to updating of selection of TreeTableView items > when the TreeItems are permuted, so the > change should not cause any other failures. Added unit tests which fail > before and pass after the fix.
Ambarish Rapte has updated the pull request incrementally with one additional commit since the last revision: Change isSortingInProgress to package scope ------------- Changes: - all: https://git.openjdk.java.net/jfx/pull/244/files - new: https://git.openjdk.java.net/jfx/pull/244/files/d6376dfc..44052f35 Webrevs: - full: https://webrevs.openjdk.java.net/jfx/244/webrev.01 - incr: https://webrevs.openjdk.java.net/jfx/244/webrev.00-01 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jfx/pull/244.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/244/head:pull/244 PR: https://git.openjdk.java.net/jfx/pull/244
