Creates an instance of AnnounceSubtitleCommand.
The application context.
The text view model.
The audio service.
The text service for mode-aware formatting.
The display service for scope management.
Protected ReadonlycontextProtected ReadonlytextProtected ReadonlyaudioProtected ReadonlytextProtected ReadonlydisplayProtectedrestoreRestores the scope to the previous scope before entering label mode. Uses DisplayService to properly manage the focus stack and restore the correct scope (TRACE, BRAILLE, etc.) regardless of which scope was active before entering label mode.
Only exits when a label scope is actually active. These announce commands are also bound outside label mode (e.g. 't' at subplot/figure level); exiting unconditionally would flip navigation into TRACE scope via the stale focus stack and break subplot activation.
Executes the command to display the subtitle. Accesses subtitle from the figure level via Context, since subtitle is a figure-level property not available on trace state. Only announces when the JSON authored a subtitle; otherwise announces "No subtitle available", matching the unavailable phrasing used by sibling title and caption commands.
Command to describe the subtitle of the figure.