private void Subservice_StateSet(object sender, StateSetEventArgs e)
{
if (!_isInternallySettingState)
{
var subserviceIndex = ((SubUndoService)sender).Index;
_undoStack.DeleteLast(subserviceIndex);
_redoStack.Push(subserviceIndex);
}
StateSet?.Invoke(this, e);
}
/// <summary>
///
/// </summary>
public void Undo()
{
_undoServiceValidator.ValidateUndo();
//If tagging is used, the part of the state that will be changed by this will be tagged in _currentState (the change there will be undone).
var args = new StateSetEventArgs {
Tag = _currentState.Tag, SettingAction = StateSetAction.Undo
};
var memento = _undoStack.Pop();
SetState(memento.State);
_redoStack.Push(_currentState);
_currentState = memento;
StateSet?.Invoke(this, args);
}
private void UndoService_StateSet(object sender, StateSetEventArgs e)
{
StateSet?.Invoke(this, e);
}