public override void undo()
{
for (int i = _list.Count - 1; i >= 0; i--)
{
AbstractCommand cmd = (AbstractCommand)_list[i];
cmd.undo();
}
}
public void undoLastCmd()
{
if (_doneStack.Count != 0)
{
AbstractCommand lastcmd = (AbstractCommand)_doneStack.Pop();
lastcmd.undo();
_undoneStack.Push(lastcmd);
if (_undoneStack.Count == _maxStackSize)
{
_undoneStack = this.reduceStackSize(_undoneStack);
}
setUnReButtonState();
}
}