Re: binding to number of selected rows in a table
Re: binding to number of selected rows in a table
- Subject: Re: binding to number of selected rows in a table
- From: "Sean McBride" <email@hidden>
- Date: Wed, 4 Mar 2009 10:14:11 -0500
- Organization: Rogue Research Inc.
On 3/3/09 6:38 PM, James Walker said:
>I want to use bindings to set certain control attributes (enabled state,
>tool tip) depending on the number of selected rows in an outline table.
> I have a controller object that owns an NSOutlineView, and I gave it
>an accessor
>
>- (NSOutlineView*) outlineView;
>
>Then I tried to bind to my controller with key paths like
>outlineView.numberOfSelectedRows and outlineView.selectedRowIndexes, and
>using value transformers. It looks like the bindings are setting the
>attributes appropriately once, but then not updating when the selection
>changes. Are these NSOutlineView methods not KVO-friendly, or am I
>doing something wrong?
Are you using NSTreeController? If so, you can bind to
selectionIndexPaths and use @count also.
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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