public void Add(UndoRedoCommand command)
{
undoStack.Push(command);
redoStack.Clear();
UpdateCommandStatus();
_changeSinceSave = true;
}
public void Redo()
{
if (!CanRedo())
{
throw new InvalidOperationException();
}
UndoRedoCommand command = redoStack.Pop();
undoStack.Push(command);
command.Redo();
UpdateCommandStatus();
_changeSinceSave = true;
}
