Re: -enclosingScrollView returns nil when receiver is a descendant of the clip view
Re: -enclosingScrollView returns nil when receiver is a descendant of the clip view
- Subject: Re: -enclosingScrollView returns nil when receiver is a descendant of the clip view
- From: "email@hidden" <email@hidden>
- Date: Wed, 23 Jun 2010 20:26:03 +0100
On 23 Jun 2010, at 19:50, Kyle Sluder wrote:
>
> To describe it a bit more visually, here's a diagram of our view hierarchy:
>
> Scroll View
> |- Clip View
> |- Accessory view
> |- Document view
>
> Calling -enclosingScrollView on the accessory view returns nil. I
> believe that it should return the scroll view.
>
> One of the workarounds we're mulling over is to replace NSView's
> implementation of -enclosingScrollView to return the scroll view if
> the receiver is a descendant of the clip view. This makes sense to me,
> because I can't see a situation in which one would call
> -enclosingScrollView without the intent of obtaining "the scroll view
> that is responsible for scrolling me around." But since we don't have
> the source to AppKit, we can't be sure that AppKit doesn't rely on
> this behavior.
>
Perhaps:
Define a -scrollViewSibling property/outlet on the accessory view and point it to the document view.
The NSView -enclosingScrollView override can check for a response to scrollViewSibling and
conditionally send -enclosingScrollView to it.
That way you are only overriding the -enclosingScrollView behaviour for views whose response is considered defective.
Regards
Jonathan Mitchell
Developer
Mugginsoft LLP
http://www.mugginsoft.com
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden