outlineView(_:acceptDrop:item:childIndex:)

Declaration

@MainActor optional func outlineView(_ outlineView: NSOutlineView, acceptDrop info: any NSDraggingInfo, item: Any?, childIndex index: Int) -> Bool

Parameters

• outlineView:

  The outline view that sent the message. outlineView must have previously allowed a drop.

• info:

  An object that contains more information about this dragging operation.

• item:

  The parent of the item over which the cursor was placed when the mouse button was released.

• index:

  The index of the child of item over which the cursor was placed when the mouse button was released.

Return Value

true if the drop operation was successful, otherwise false.

Discussion

The data source should incorporate the data from the dragging pasteboard in the implementation of this method. You can get the data for the drop operation from info using the draggingPasteboard method.

The return value indicates success or failure of the drag operation to the system.

See Also

Related Documentation

• shouldCollapseAutoExpandedItems(forDeposited:)

Instance Methods

• outlineView(_:child:ofItem:)
• outlineView(_:draggingSession:endedAt:operation:)
• outlineView(_:draggingSession:willBeginAt:forItems:)
• outlineView(_:isItemExpandable:)
• outlineView(_:itemForPersistentObject:)
• outlineView(_:namesOfPromisedFilesDroppedAtDestination:forDraggedItems:)
• outlineView(_:numberOfChildrenOfItem:)
• outlineView(_:objectValueFor:byItem:)
• outlineView(_:pasteboardWriterForItem:)
• outlineView(_:persistentObjectForItem:)
• outlineView(_:setObjectValue:for:byItem:)
• outlineView(_:sortDescriptorsDidChange:)
• outlineView(_:updateDraggingItemsForDrag:)
• outlineView(_:validateDrop:proposedItem:proposedChildIndex:)
• outlineView(_:writeItems:to:)