While performing a drag and drop in NSOutlineView at the point where I accept
the drop I
want to throw up an NSPopover at the drop point with some options and an accept
or decline button to ultimately
accept or refuse the drop. The popover needs to run modal so as to block on the
return to accept. So this in short
is what I'm doing:
- (BOOL)outlineView:(NSOutlineView *)outlineView acceptDrop:(id
<NSDraggingInfo>)info item:(id)item childIndex:(NSInteger)index
{
[popover showRelativeToRect:rect ofView:outlineView
preferredEdge:preferredEdge];
NSWindow *window = popover.contentViewController.view.window;
NSInteger ret = [NSApp runModalForWindow:window];
return (ret == 1);
}
This works but the problem is the drag image ends up on top of the popover
obscuring some
of the controls. I have tried to remove the drag image by running
[info enumerateDraggingItemsWithOptions:0
forView:outlineView
classes:[NSArray arrayWithObject:[NSURL class]]
searchOptions:nil
usingBlock:^(NSDraggingItem *draggingItem, NSInteger idx, BOOL
*stop) {
// tried this
[draggingItem setDraggingFrame:NSZeroRect contents:nil];
// and this
draggingItem.imageComponentsProvider = nil;
// but neither work
}];
just before showing the popover but this has no effect.
I also tried subclassing NSOutlineView and doing
- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
{
[sender enumerateDraggingItemsWithOptions:0
forView:self
classes:[NSArray arrayWithObject:[NSURL class]]
searchOptions:nil
usingBlock:^(NSDraggingItem *draggingItem, NSInteger idx, BOOL
*stop) {
draggingItem.imageComponentsProvider = nil;
}];
return [super performDragOperation:sender];;
}
but no joy here either.
Any help on doing this would be greatly appreciated
I'm using the newer multi pasteboard item api
- (id <NSPasteboardWriting>)outlineView:(NSOutlineView *)outlineView
pasteboardWriterForItem:(id)item
Thanks
Jonathan
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