autographScopeOrigin

The origin for an event on this view: its own autographScopeOwner, or the nearest ancestor's, or null when no surface up the tree has claimed one (no native capture installed, or a window — a Popup, a Dialog — whose view tree is not under any surface's root).

Nearest wins, and that is what makes a surface nested inside another resolve to itself: a fragment's view sits inside its host Activity's decor, and both are tagged.