updateShouldNotifyDependent method

@override bool updateShouldNotifyDependent(covariant StageData oldWidget, Set<Object> dependencies)

Return true if the changes between this model and oldWidget match any of the dependencies.

Implementation

@override
bool updateShouldNotifyDependent(StageData oldWidget, Set<Object> dependencies) {
  for (final dep in dependencies) {
    switch (dep) {
      case _tagAspect:
        if (tag != oldWidget.tag) return true;
      case _widgetAspect:
        if (widget != oldWidget.widget) return true;
      case _hasWidgetAspect:
        if ((widget != null) != (oldWidget.widget != null)) return true;
      case _dismissingAspect:
        if (dismissing != oldWidget.dismissing) return true;
      case (#tag, final Object t):
        final was = oldWidget.tag == t || oldWidget.tagStates.containsKey(t);
        final now = tag == t || tagStates.containsKey(t);
        if (was != now) return true;
      case (#active, final Object t):
        if ((tag == t) != (oldWidget.tag == t)) return true;
      case (#state, final Object t):
        if (tagStates[t] != oldWidget.tagStates[t]) return true;
    }
  }
  return false;
}