Which standard actions are applicable for the current selection / document state.
[ctor]public ContextMenuCapabilities()
public readonly boolCanCut
public readonly boolCanCopy
public readonly boolCanPaste
public readonly boolCanSelectAll
public readonly boolHasSelection
Whether a non-collapsed selection exists — distinct from CanCopy, which is additionally gated by copy policy (a password field selects without copying).
