Re: Best way to selectively show objects in a tree controller/outlineview
Re: Best way to selectively show objects in a tree controller/outlineview
- Subject: Re: Best way to selectively show objects in a tree controller/outlineview
- From: Tony Romano <email@hidden>
- Date: Wed, 31 Mar 2010 01:14:11 -0700
After some research, NSTreeController does not support predicates. subclass'ing looks like the way to go. I'll look into to-many properties as well.
Thanks so much!
-tony
On Mar 30, 2010, at 8:51 PM, Kyle Sluder wrote:
> On Tue, Mar 30, 2010 at 8:35 PM, Tony Romano <email@hidden> wrote:
>> One obvious method(albeit brute force) is to rebuild the tree controller list and redisplay it. For what I want to do, this is way too expensive of an operation. In addition, the user can toggle back and forth the preference. There doesn't seem to be an obvious way to tell the outline controller, "skip or hide this item".
>
> See -[NSArrayController filterPredicate].
>
> If that doesn't suit your needs, subclass NSArrayController and do
> your filtering in -arrangeObjects. If *that* doesn't suit your needs,
> bind your array controller to a to-many property you control and do
> your filtering there.
>
> --Kyle Sluder
>
-tony
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