Dragging in Outlineview

Discussion in 'Mac Programming' started by i.yalovecky, Jul 27, 2010.

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  1. i.yalovecky, Jul 27, 2010

    i.yalovecky macrumors member

    Joined:
    Feb 24, 2010
    #1
    How i can implement dragging highlighting (blue line) in case then i drag top level item that can be dropped only at the top level.

    Example is Mail. When i dragging MAILBOXES it highlights where it will appeared very good for me.
     
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  2. i.yalovecky, Jul 27, 2010

    i.yalovecky thread starter macrumors member

    Joined:
    Feb 24, 2010
    #2
    This function setDropItem:dropChildIndex: helped me.
     
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  3. GorillaPaws, Jul 27, 2010

    GorillaPaws macrumors 6502a

    GorillaPaws

    Joined:
    Oct 26, 2003
    Location:
    Richmond, VA
    #3
    As you've discovered, use the delegate methods. The tricky part about drag/dropping using an NSOutlineView is figuring out the indexing, because the index is used in relation to the parent node, not to the global list. If you're trying to maintain sort order it can be a bit messy.
     
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