Dragging file promises from an NSOutlineView
Dragging file promises from an NSOutlineView
- Subject: Dragging file promises from an NSOutlineView
- From: Mark Alldritt <email@hidden>
- Date: Sun, 25 Feb 2007 11:45:48 -0800
- Thread-topic: Dragging file promises from an NSOutlineView
Hi All,
Okay, I'm totally stumped on this one. I want to allow the user to drag
objects from an NSOutlineView to the desktop to export those objects to a
file.
I've Googled this and nothing that works has surfaced.
This is what I have - this is the code that initiates the drag:
- (BOOL) outlineView:(NSOutlineView*) outlineView writeItems:(NSArray*)
items toPasteboard:(NSPasteboard*) pboard
{
NSArray* selection = [FSModelHelper normalizeSelection:[items
valueForKey:@"observedObject"]];
if ([FSModelHelper canDuplicateModels:selection])
{
[pboard declareTypes:[NSArray
arrayWithObjects:NSFilesPromisePboardType, nil] owner:self];
[pboard setPropertyList:[NSArray
arrayWithObject:kFSArchiveExtension] forType:NSFilesPromisePboardType];
return [FSModelHelper writeModels:selection toPasteboard:pboard];
}
else
return NO;
}
Then, I have these methods to handle the file promise. The problem is that
these methods are never called and a drop in the Finder's desktop simply
slides back:
- (NSArray*) namesOfPromisedFilesDroppedAtDestination:(NSURL
*)dropDestination
{
NSLog(@"namesOfPromisedFilesDroppedAtDestination: %@", dropDestination);
return nil;
}
- (void) pasteboard:(NSPasteboard*) pboard provideDataForType:(NSString*)
type
{
NSLog(@"pasteboard: %@ provideDataForType: %@", pboard, type);
}
- (NSArray*) outlineView:(NSOutlineView*) outlineView
namesOfPromisedFilesDroppedAtDestination:(NSURL*) dropDestination
forDraggedItems:(NSArray*) items
{
NSArray* selection = [items valueForKey:@"observedObject"];
FSModelHelper* helper = [FSModelHelper modelHelperFor:self
withSelection:selection];
return [NSArray arrayWithObject:[helper
exportAtDropDestination:dropDestination]];
}
FSModelHelper is a class that implements export/import/movement/deletion
functionality that is shared by several view classes in my application.
What am I doing wrong?
Cheers
-Mark
------------------------------------------------------------------------
Mark Alldritt Late Night Software Ltd.
Phone: 250-380-1725 Script Debugger 4.0 - AppleScript IDE
WEB: http://www.latenightsw.com/ FaceSpan 4.3 - AppleScript RAD
Affrus 1.0 - Perl Debugging
_______________________________________________
Cocoa-dev mailing list (email@hidden)
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