Re: Troubles with CollectionView and IKImageBrowserView
On Jun 12, 2008, at 00:25, Jens Alfke wrote:
On 11 Jun '08, at 1:14 PM, Manuel wrote:
But the IKImageBrowserView doesn't call these methods. I setup a
testmethod in the MYNSCollectionViewItem like the following code,
to verify that the imagebrowser outlet is set and to set again the
datasource:
Hm, I don't have any exact ideas, but I wonder if something's going
wrong because CollectionViewItems get copied. (The one you wire up
in the nib is a prototype, and the view makes a copy of it for every
item it needs.) Perhaps the item is getting set as the image-
browser's data source before the copy, so the instance being
displayed isn't actually the one that's the data source?
Jens is right in that copying the collection view is often a problem,
as NSView does not support the NSCopying protocol. There's some more
information on the way that NSCollectionView copies the view here:http://www.cocoadev.com/index.pl?NSCollectionView
(near the bottom).
I got it working like this:
- put your custom view initialisation in initWithCoder: (as that is
the one used to copy the original instance / unarchive your nib)
- in your view, have an IBOutlet that's connected to the
NSCollectionViewItem instance (called cvItem in my case)
- in awakeFromNib bind the properties you're interested in (as these
get restored / set correctly in the cloning process), e.g.
- (void)awakeFromNib
{
[self bind:@plotRoot toObject:cvItem
withKeyPath:@representedObject options:nil];
[self bind:@isSelected toObject:cvItem withKeyPath:@selected
options:nil];
}
This setup works fine for me (ignoring the other known bugs and
documentation deficiencies of NSCollectionView — it's slightly
disheartening when you file a bug on it, get a dup back and realise
it's been known long enough for 1094954 other bugs to be filled..).
HTH,
Daniel.___
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Troubles with CollectionView and IKImageBrowserView
Hello Macprogrammers
I've a problem with my IKImageBrowser in combination with a
CollectionViewItem.
I have a NSWindow with a NSCollectionView and a NSArrayController. I
extended the NSCollectionViewItem to reference the IKImageBrowserView
in an outlet and use the NSCollectionViewItem as a Datasource for the
IKImageBrowser (Connected together in Interface Builder):
NSWindows - NSCollectionView (With NSArrayController) -
MYNSCollectionViewItem (as ControllerItem) - NSViewItem -
IKImageBrowserView
In MyNSCollectionViewItem I've implemented following 2 Datasource
Methods:
- (int)numberOfItemsInImageBrowser:(IKImageBrowserView*)view
- (id)imageBrowser:(IKImageBrowserView *) view itemAtIndex:(int) index
But the IKImageBrowserView doesn't call these methods. I setup a
testmethod in the MYNSCollectionViewItem like the following code, to
verify that the imagebrowser outlet is set and to set again the
datasource:
- (IBAction)refreshView:(id)sender {
Album *representedObject = [self representedObject];
NSLog(@UniqueData per row: %@, [representedObject uniqueData]);
[imageBrowser setDataSource:self];
[imageBrowser reloadData];
}
But even if i explicit set the IKImageBrowser DataSource to the
MYNSCollectionViewItem the DataSource methods wouldn't be called by
the IKImageViewBrowser. Do you know this problem? Outside the new
CollectionView with a simple implementation, this code works very well.
Kind regards from Lucerne (Switzerland)
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Re: Troubles with CollectionView and IKImageBrowserView
On 11 Jun '08, at 1:14 PM, Manuel wrote: But the IKImageBrowserView doesn't call these methods. I setup a testmethod in the MYNSCollectionViewItem like the following code, to verify that the imagebrowser outlet is set and to set again the datasource: Hm, I don't have any exact ideas, but I wonder if something's going wrong because CollectionViewItems get copied. (The one you wire up in the nib is a prototype, and the view makes a copy of it for every item it needs.) Perhaps the item is getting set as the image-browser's data source before the copy, so the instance being displayed isn't actually the one that's the data source? —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
