If I recall correctly, if you did implement ANY delegate method using
10.7 the split view did fall back to a "non-autolayout" aware mode. At
least that was my experince. It did change with 10.8. But take this with
a lot of caution. My memory tends to mess up those things :)
Ah. There was something:
http://www.cocoabuilder.com/archive/cocoa/326128-nssplitview-not-resizing-subviews-if-delegate-is-used.html#326128
-Michael
On 09.01.2014 16:51, Andy Lee wrote:
On Jan 6, 2014, at 11:54 AM, Fritz Anderson <fri...@manoverboard.org> wrote:
On 4 Jan 2014, at 1:38 PM, thatsanicehatyouh...@me.com wrote:
I like your user name.
I have a couple of questions about using auto layout (AL) with NSSplitView and
NSScrollView. I have watched the (excellent) WWDC videos from 2012, but am
having problems.
I'm trying to implement an NSSplitView
[… that collapses one of the views if the user resizes it below a set minimum.]
The next thing I’d try (meaning I have no experience and no time to make the
experiment; others’ solutions would trump mine; and I seem to remember this is
a solved problem to be found in the archives of this list, Stack Overflow, or
[ugh] the Developer Forums) is to see whether listening to the collapsing
view’s NSFrameDidChangeNotification was of help. If the frame goes below
minimum width, replace the width constraint with a zero.
[same disclaimers as Fritz]
As far as I know (see disclaimers), there's no reason you can't implement split
view delegate methods just because you're using Auto Layout, as long as you aren't
calling setFrame:. I would guess it's perfectly all right to implement
splitView:constrainSplitPosition:ofSubviewAt:, examine the proposedPosition
argument, and allow the view's width to be either zero or >= the minimum width
but not in between.
You might have to fiddle with constraints for the reason Fritz gives:
Constraints for contained views would tend to push the collapsed view’s width
out, but reducing the priorities of some of the constraints on the views that
would push back should take care of that.
You could also add a *higher*-priority constraint that says the collapsed
view's width must be 0, and this would trump the constraints that tend to push
back. I think.
--Andy
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