private Stack reduceStackSize(Stack oldStack)
{
Stack newStack = new Stack();
int stackCount = oldStack.Count;
for (int n = 1; n < stackCount; n++)
{
AbstractCommand ac = (AbstractCommand)oldStack.Pop();
newStack.Push(ac);
}
return(newStack);
}
public void doCmd(AbstractCommand cmd)
{
cmd.doit();
_doneStack.Push(cmd);
_undoneStack.Clear();
if (_doneStack.Count == _maxStackSize)
{
_doneStack = this.reduceStackSize(_doneStack);
}
setUnReButtonState();
}
public void redoLastUndone()
{
if (_undoneStack.Count != 0)
{
AbstractCommand last_undone_cmd = (AbstractCommand)_undoneStack.Pop();
last_undone_cmd.redo();
_doneStack.Push(last_undone_cmd);
if (_doneStack.Count == _maxStackSize)
{
_doneStack = this.reduceStackSize(_doneStack);
}
setUnReButtonState();
}
}
