public static void Track(string name, Action undo)
{
var acc = new SingleItemAccumulator(name, undo);
acc.ClosedForBusiness = true;
AccumulatorManager.Instance.Add(acc, ScopeState.Do);
}
/// <summary>
/// Called right before the PropertyChanged event is fired. Return false to block the change
/// </summary>
/// <param name="name"></param>
/// <param name="currentValue">value before the change</param>
/// <param name="raiseEvent">whether or not the PropertyChanged event will actually be raised</param>
protected virtual bool OnPropertyChanging(string name, object currentValue, bool raiseEvent, object newValue)
{
if (TrackChanges && Globals.ScopeEachChange && Accumulator == null)
{
SingleItemAccumulator.Track($"{name} changed to {newValue}", () => Set(currentValue, name, raiseEvent));
}
else if (TrackChanges)
{
Accumulator?.AddUndo(() => Set(currentValue, name, raiseEvent));
}
return(true);
}
