runPausable<T> method

Future<T> runPausable<T>(FutureOr<void> onPause(), FutureOr<void> onResume(), FutureOr<T> action())

Performs the following actions:

• Adds a pause handler onPause
• Adds a resume handler onResume
• Executes the action function
• Removes a pause handler onPause
• Removes a resume handler onResume

The onPause handler function should initiate the pause procedure which pauses the execution of the action function.
The onResume handler function should initiate the resume procedure which resume the execution of the action function.

Implementation

Future<T> runPausable<T>(
  FutureOr<void> Function() onPause,
  FutureOr<void> Function() onResume,
  FutureOr<T> Function() action,
) async {
  final zone = Zone.current;
  _onPause[onPause] = zone;
  _onResume[onResume] = zone;
  try {
    return await action();
  } finally {
    _onPause.remove(onPause);
    _onResume.remove(onResume);
  }
}