Hi,
I have an NSGridView that contains a bunch of custom NSBox's. I want to implement drag drop for these boxes, where each box can be dragged into another box and they swap positions. The declaration of the custom box is like so:
class CustomBox:NSBox, NSDraggingSource
{
override func mouseDown(with event: NSEvent) {
let pasteboardItem = NSPasteboardItem()
pasteboardItem.setString(self.title, forType:.string)
let draggingItem = NSDraggingItem(pasteboardWriter: pasteboardItem)
draggingItem.setDraggingFrame(self.bounds, contents:self)
beginDraggingSession(with: [draggingItem], event: event, source: self)
}
func draggingSession(_ session: NSDraggingSession, sourceOperationMaskFor context: NSDraggingContext) -> NSDragOperation {
switch(context) {
case .withinApplication : return .generic
default : return NSDragOperation()
}
}
override func draggingExited(_ sender: NSDraggingInfo?) {
// Get the Destination box here and call DoSwap() to swap the boxes
}
}
From the NSDraggingInfo in draggingExited, I was not getting the destination box. However using
let cell = self.window?.contentView?.hitTest(pSender!.draggingLocation)
returns the reference to the Gridview rather than the NSBox (same scenario happens when using hitTest on the Gridview object after using convert to convert the coordinates).
Is there a way to get the reference to the destination NSBox where the drop has happened?
Thanks!
