Replace the three mutually-unaware Escape systems — Modal's private modalStack,
the popovers' document listeners with a blanket stopPropagation, and the two
players' modalCount() checks — with one shared lib/layerStack.ts. Every open
dismissable layer registers in open order; a layer acts on Escape only when it
is topmost, and reads anyLayerAbove() to decide whether to defer. Coordination
is now a stack lookup, not event-propagation order, so it no longer depends on
which listener happens to fire first.
- Modal + useDismiss register via the stack; useDismiss drops the blanket
stopPropagation (its documented side effect: it swallowed a player's own
Escape while any popover was open).
- Both players register as a layer and defer via anyLayerAbove() instead of
modalCount(); PlayerModal checks it before its maximise/fullscreen steps.
A player MENU is a layer too, so it closes first and the next Escape reaches
the auto-skip-cancel — fixing the documented PlexPlayer bug.
- AnchoredPopover routes non-hover Escape through the stack (floating-ui's own
escapeKey off there) and registers as a layer, so a player/modal underneath
defers once S4 migrates the in-player menus. FloatingTree still owns
popover-vs-popover ordering; the stack adds the cross-type ordering.
peter
7ed98956cc