Open Radar

 
Summary:
If user drags row between 2 top level rows, and top row is expanded. NSOutlineView keeps displaying inside of top item as destination, despite the real destination being between 2 top level items.
See attached video "drag-test.mov"

Steps to Reproduce:
1. Create application with NSOutlineView.
2. Implement NSOutlineViewDataSource “-outlineView:validateDrop:proposedItem:proposedChildIndex:” method and other required methods to enable dragging of rows.
3. Outline view must have data source with at least 2 levels, for example:
	-A
	-1
	  | -B
	  | -C
	  | -D
	-2
	  | -E
	  | -F 

3. Expand item “1”.
4. Drag item “A” below item “D” (look at image “drag-inside.jpg”).
5. Proposed drop item should be item “1” and child index 3.
6. Drag item to the left, behind item “D” (look at image “drag-outside.jpg”). Proposed drop item should be “null” and child index 2. But outline view visual representation of drop destination will not change.


Expected Results:
NSOutlineView displayed drop destination should match the real destination.

Actual Results:
NSOutlineView displayed drop destination does not match the real destination.

Version:
Xcode Version 6.3.1 (6D1002)
OS X Version 10.10.3 (14D136)


Notes:


Configuration:


Attachments:
'drag-test.mov', 'drag-inside.jpg', 'drag-outside.jpg' and 'DragTest.zip' were successfully uploaded.