Reports whether a tool currently owns the map interactions.
Hover handlers that write the cursor MUST consult this before touching it, otherwise
they wipe an armed tool's crosshair the first time the pointer leaves a feature.
Parameters
map: CursorCapableMap|ExclusiveModeHost
The native engine map, or an adapter wrapping one.
Reports whether a tool currently owns the map interactions.
Hover handlers that write the cursor MUST consult this before touching it, otherwise they wipe an armed tool's crosshair the first time the pointer leaves a feature.