public void Undo(Command command)
{
if (!m_undoCommandStack.Contains(command))
throw new Exception("The command is not in the undo stack");
while (m_undoCommandStack.Peek() != command)
Undo();
Undo();
}
public void UndoOrRedo(Command command)
{
if (m_undoCommandStack.Contains(command))
Undo(command);
else if (m_redoCommandStack.Contains(command))
Redo(command);
else
throw new Exception("The command is not in the undo/redo command history");
}
public void Do(Command command)
{
command.Do();
m_undoCommandStack.Push(command);
m_redoCommandStack.Clear();
}
