sin-ack 8c1a6a8436 LibGUI: Default TreeView to SelectionBehavior::SelectItems ...

AbstractTableView (which TreeView inherits from) sets the selection
behavior of the view to SelectRows. This is not how TreeViews are used
in most of the system, and TreeView::paint_event actually always draws
with the assumption of selecting individual items. This commit defines
the expected selection behavior for TreeViews. Users of TreeView can
still override this via TreeView::set_selection_behavior.

2021-08-10 21:56:47 +02:00

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