Module surface 

ToastSurface — the rendered chrome of one toast.

Built by ToastHost for each live entry. Owns the severity glyph, title + body column, action row, close button, and the Role::Alert / Role::Status AccessKit node mapping. The visual chrome (background, padding, layout) is delegated to the active ToastStyle via make_body.

An update in place (Toast::id) rebuilds the surface of that one entry, and the rebuild reconciles: the surface’s own node stays (so the toast is announced again only if its name changed), and the glyph, title, body, each action and the close button are kept when the update left them as they were. A progress toast updated every 160 ms therefore keeps the Cancel a keyboard user is on, and a kept action calls the action of the latest update, not of the one that built it.

Structs

ToastSurface

One rendered toast — chrome owned by ToastStyle::make_body, functional pieces (glyph, body, action row, close button) owned by this widget. Built once per entry by the host; an update in place rebuilds it and keeps what did not change (see the module docs).

ToastSurfaceData

Snapshot data passed to a ToastSurface for one live entry. Owned by the host’s LiveEntry and cloned into the surface at build time. Rc<...> fields keep callbacks cheap to copy.