expandItem(_:expandChildren:)
Expands a specified item and, optionally, its children.
Declaration
func expandItem(_ item: Any?, expandChildren: Bool)Parameters
- item:
An item in the receiver.
Starting in OS X version 10.5, passing
'nil'will expand each item under the root in the outline view. - expandChildren:
If True, recursively expands
itemand its children. If False, expandsitemonly (identical to Expanditem(_:)).
Discussion
For example, this method is invoked with the expandChildren parameter set to true when a user Option-clicks the disclosure triangle for an item in the outline view (to expand the item and all its contained items).
For each item expanded, posts an item expanded notification.