This bug is 1.5 years old, unless you consider it important based on the
description (which I hope is detailed enough), please feel free to drive
the bug however you decide, thanks. If Unity8 is still using FilterGrid,
I believe it would be worth investigating, but I currently don't have
the capacity to help, I'm sorry :(
** Changed in: unity8 (Ubuntu)
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/1274095
Title:
FilterGrid backed by FilterProxyModel renders wrong
Status in unity8 package in Ubuntu:
New
Bug description:
While working on a different bug I noticed that FilterGrid would
occasionally not render properly when backed by LimitProxyModel.
To give you an example:
$ bzr branch -r657 lp:~unity-team/unity8/unity8-fix-filtergrid
tests/qmltests/Components/tst_FilterGrid
Wraps the fakeModel with LimitProxyModel, and sets that on the filterGrid as
the backing model.
$ make -C builddir tryFilterGrid
Consdering collapsedRowCount: 2, columns: 3, now select "model count limit"
value
4 (4 items shown, 3+1), then
1 (1 item shown), then
4 (*3* items shown, 3+0) -- second row should show one more item.
Note that "rowsWhenCollapsed" displays value of 2, which would be correct
(that would be the actual value of collapsedRowCount).
Now select:
3 (3 items shown), then
4 (*4* items shown, 3+1) -- only now the behavior is correct!
In other words, items displayed on the second row seem to "kick in"
only after model grows while it previously filled up the whole first
row (or, for that matter, you could generalize to the last row being
visible in the FilterGrid, smaller than collapsedRowCount).
As you see, changing the count of items in the model should not affect
how many items FilterGrid shows (/renders). And even though
rowsWhenCollapsed is calculated correctly, items are missing. Try
selecting "model count limit" to 1, then 7. You'll only see 3. If you,
however, set 3, then 7, you'll see 6!
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