One more try - NSCollectionView multi-selection problem..
One more try - NSCollectionView multi-selection problem..
- Subject: One more try - NSCollectionView multi-selection problem..
- From: Robert Monaghan <email@hidden>
- Date: Mon, 09 Jul 2012 09:34:53 +0200
Hi Everyone,
In a previous posting, I had a problem with NSCollectionView not selecting a range of objects, when shift-selecting items.
For example, if I were to click on object "3" and then shift-click on object "5", I would expect a range of 3,4,5 to be highlighted.
Instead only 3 and 5 are selected.
Ok, so multi-selection works. Sorta..
(BTW, this same behavior happens with Imagebrowser sample app from Apple.)
I added an observer to my NSArrayController's "selectionIndexes" to see what it think is happening.
Sure enough, the NSArrayController is getting a bunch of ranges that look like this:
<NSIndexSet: 0x100648650>[number of indexes: 2 (in 2 ranges), indexes: (2 4)]
I would have expected something like this:
<NSIndexSet: 0x100362a50>[number of indexes: 3 (in 1 ranges), indexes: (2-4)]
Suggestions?
I see a "setSelectionIndexes:" selector in the NSCollectionView object.
Do I need to do something here? It seems like a huge headache to "teach" NSCollectionView to do a properly shift-selection of a range.
Thanks!
bob.
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