The custom cell I'm using is a modification of "ImageAndTextCell" from the
DragNDropOutlineView sample project. In that class they have some comments
that describe how "hitTestForEvent:inRect:ofView:" works. It's my
understanding that if I return anything other than NSCellHitTrackableArea a
drag should be initiated. Here is my implementation of that method and I'm
still not having any luck:
- (NSUInteger)hitTestForEvent:(NSEvent *)event inRect:(NSRect)cellFrame
ofView:(NSView *)controlView
{
return NSCellHitContentArea;
}
On Mar 14, 2011, at 3:25 PM, Corbin Dunn wrote:
> Your custom cell needs to properly implement:
>
> - (NSUInteger)hitTestForEvent:(NSEvent *)event inRect:(NSRect)cellFrame
> ofView:(NSView *)controlView NS_AVAILABLE_MAC(10_5);
>
> See the header for details or the AnimatedTableView demo.
>
> --corbin
>
> On Mar 14, 2011, at 12:20 PM, Carter R. Harrison wrote:
>
>> I'm having trouble getting drag and drop to work with an NSOutlineView.
>> What I've done is below. The problem is that
>> "tableView:writeRowsWithIndexes:toPasteboard" never gets called. I found a
>> few people with the same issue and it seems that the cause of the problem is
>> that I am using a custom cell that is a subclass of NSTextFieldCell, however
>> I haven't been able to find a solution that fixes my problem.
>>
>> 1. Set the NSOutlineView's delegate and datasource outlets.
>> 2. In the datasource's awakeFromNib method I call "registerForDraggedTypes:"
>> on the outline view.
>> 3. I implemented the following methods in my datasource:
>>
>> - (BOOL)tableView:(NSTableView *)aTableView writeRowsWithIndexes:(NSIndexSet
>> *)rowIndexes toPasteboard:(NSPasteBoard *)pboard
>> - (BOOL)outlineView:(NSOutlineView *)outlineView acceptDrop:(id <
>> NSDraggingInfo >)info item:(id)item
>> - (NSDragOperation)outlineView:(NSOutlineView *)outlineView validateDrop:(id
>> < NSDraggingInfo >)info proposedItem:(id)item
>> proposedChildIndex:(NSInteger)index
>>
>> Any help is greatly appreciated!
>> _______________________________________________
>>
>> Cocoa-dev mailing list ([email protected])
>>
>> 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/corbind%40apple.com
>>
>> This email sent to [email protected]
>
_______________________________________________
Cocoa-dev mailing list ([email protected])
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]
