Re: One more try - NSCollectionView multi-selection problem..
Re: One more try - NSCollectionView multi-selection problem..
- Subject: Re: One more try - NSCollectionView multi-selection problem..
- From: Graham Cox <email@hidden>
- Date: Tue, 10 Jul 2012 11:48:22 +1000
I believe for icon-type views, the idea that shift-selecting selects a range of items is no longer considered best practice these days. For example, the icon view in the Finder doesn't do that (list view does).
command-click and shift-click are the same thing for icon views, i.e. they toggle the clicked item.
--Graham
On 09/07/2012, at 5:34 PM, Robert Monaghan wrote:
> 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.
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