Global Variable

NSOutlineViewItemWillExpandNotification

Posted before an item is expanded (after the user clicks the arrow but before the item is collapsed).

Declaration

NSNotificationName NSOutlineViewItemWillExpandNotification;

Discussion

The notification object is the outline view that contains an item about to be expanded. The userInfo dictionary contains the following information:

Key

Value

@"NSObject"

The item that is to be expanded (an id)

See Also

Notifications

NSOutlineViewColumnDidMoveNotification

Posted whenever a column is moved by user action in an NSOutlineView object.

NSOutlineViewColumnDidResizeNotification

Posted whenever a column is resized in an NSOutlineView object.

NSOutlineViewItemDidCollapseNotification

Posted whenever an item is collapsed in an NSOutlineView object.

NSOutlineViewItemDidExpandNotification

Posted whenever an item is expanded in an NSOutlineView object.

NSOutlineViewItemWillCollapseNotification

Posted before an item is collapsed (after the user clicks the arrow but before the item is collapsed).

NSOutlineViewSelectionDidChangeNotification

Posted after the outline view's selection changes.

NSOutlineViewSelectionIsChangingNotification

Posted as the outline view’s selection changes (while the mouse button is still down).