Notifies registered callbacks in response to changes.

Public members¶

ChangeNotifier()

Initialize self. See help(type(self)) for accurate signature.

add_changed_callback(callback: Callable[[], None])

Registers a callback to be invoked when the state changes.

remove_changed_callback(callback: Callable[[], None])

Removes a previously-registered callback.

change_count: int

Total number of changes that have occurred.