Re: primary/secondary selection pattern for NSArrayController?
Re: primary/secondary selection pattern for NSArrayController?
- Subject: Re: primary/secondary selection pattern for NSArrayController?
- From: Scott Stevenson <email@hidden>
- Date: Mon, 9 Apr 2007 23:43:00 -0700
On Apr 9, 2007, at 11:46 AM, Eric Miller wrote:
The behavior I want is that there is always an object in the
controller's selection which is the "primary" selection. Other objects
in the selection are "secondary." The user may (in my case, via a
custom view) change the primary selection, but lacking that, if there
is any selection, the controller must designate *some* object as the
primary.
I don't think there's anything like this built it, but that's really
because there's no widely-established behavior in the Mac user
interface for it. There's only "one thing" and "a group of equal
things."
There is usually a concept of which item in the group was clicked
first, but I think that's slightly different from what you mean.
It certainly could be implemented, but it steps outside of what users
have come to expect. My opinion is that you should make sure there's
a really, really good reason to do it if you're going to redefine
such a fundamental behavior.
- Scott
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