Swift: Opening a file by drag-and-drop in window

Question

In Swift, how can I build an area in a window of my Mac app where a user can drag-and-drop a folder onto this area, and have my app receive the path of the folder?

In pr

Answer 1

In a custom NSView:

override init(frame frameRect: NSRect)
{
    super.init(frame: frameRect)
    registerForDraggedTypes([kUTTypeFileURL,kUTTypeImage])
}

override func draggingEntered(sender: NSDraggingInfo) -> NSDragOperation
{
    println("dragging entered")
    return NSDragOperation.Copy
}

The catch is, to get it working I had to put that custom view as a leaf and the last view in the storyboard