On 24 Dec 2009, at 05:53, Nicolas Berloquin wrote: > Hi ! > > I must have killed the gods of array bindings in a previous life, > but I'm pulling my hair (or whatever's left), and, even though I > thought I got I, well, I really don't. > > I'm trying to do something quite simple. > I'd like to display a series of images with a label inside an > NSCollectionView. > Whatever I do, the collectionview remains empty (even though I can see the > nice > checkered background (since I set up default layout rows/cols) which > reflects the size > of my customized item view).
Why not use IKImageBrowserView? It's a perfect match for grids of images with titles. And faster too. > > In a nib file that has a couple windows, the File's Owner is an > NSWindowController > of mine. Right now, it concentrates most of the controlling. > The NSMutableArray which contains the images and strings is a property of > the windowController. > I created an NSArrayController, bound to the File's Owner, with the model > key path to the name > of my array (checked spelling etc). > I created an NSCollectionView and set it up like this : > - content is bound to the arrayController, and controller key is > "arrangedObjects". > - the item prototype is the NSCollectionViewItem that got created > automatically. > - for the NSCollectionViewItem, its view is the auto-created view that I > customized to add an NSImageView and a label. > Now, I tried with and without setting the fields in the "Attributes" > inspector. Since the View is inside the same nib as > the NSCollectionViewItem, I think I can leave this blank, since the outlet > connects them already. > > - for the view itself (that should be drawn inside the collectionview), the > NSTextField (not the cell) is bound > > to the Collection View Item, and the model key path is set to > "representedObject._imageUID". (_ImageUID is a > > property of the content of my NSMutableArray. To make it short, I add simple > class instances that have two > > fields, NSImageView *_image, NSString *_imageUID) > > - the NSImageView is bound the same way, but to representedObject._image. > > >> From what I read all over the net, this should be one way to do it... > > So, now on to the model side. Maybe my array isn't observed as being > updated. > > I tried a few things... > > with and without declaring the NSMutableArray as a property, and assigning > it > > through a setter in windowControllerDidLoadNib. > > I use insertObject: atIndex: to add elements to the array. And I made sure > that I add them > > from the main thread (performOnMainThread or similar calls when necessary). > > I traced the content of the NSCollectionView from the debugger, and it seems > that it > > doesn't see any of that. But maybe I shouldn't worry about what I see ? > > The collectionView shows : > > _content has 0 objects > > _displayedItems has 0 objects > > > I tried setting the NSCollectionView's content by hand, (with setContent: > myArray) but > > then I get lots of weird warnings : > > *Could not connect the action orderFrontStandardAboutPanel: to target of > class NSCollectionViewItem* > > *Could not connect the action hide: to target of class NSCollectionViewItem* > > Could not connect the action terminate: to target of class > NSCollectionViewItem > > *Could not connect the action hideOtherApplications: to target of class > NSCollectionViewItem* > > *Could not connect the action unhideAllApplications: to target of class > NSCollectionViewItem* > * > * > And I also tried to send setNeedsDisplay: YES to the collectionView, just in > case... > > So, if anyone has any suggestion, I'd be really glad to hear them. I really > don't understand what > goes wrong. Somehow, this technology, "It simply doesn't work"... :) > > > thanks ! > _______________________________________________ > > 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/cocoadev%40mikeabdullah.net > > This email sent to cocoa...@mikeabdullah.net _______________________________________________ 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 arch...@mail-archive.com
