public UndoHistory(ControlGUI gui)
{
this.gui = gui;
isEnabled = true;
history = new LinkedList <UndoHistoryState>();
lastState = null;
stateInterrupt = new UndoHistoryStateInterrupt();
}
public void RestoreState()
{
while (true)
{
UndoHistoryState newState = RestoreStateInternal();
if (newState == null)
{
break;
}
if (newState is UndoHistoryStateBoneTransform)
{
break;
}
}
//PrintUndoHistory();
}
private UndoHistoryState RestoreStateInternal()
{
if (history.Count == 0)
{
return(null);
}
UndoHistoryState state = history.Last.Value;
history.RemoveLast();
isEnabled = false;
state.Apply(gui);
isEnabled = true;
lastState = (history.Count > 0 ? history.Last.Value : null);
return(state);
}
public void SaveState(UndoHistoryState state)
{
if (!isEnabled)
{
return;
}
bool isSignificant = true;
if (lastState != null)
{
isSignificant = state.DetermineSignificance(lastState);
}
if (isSignificant)
{
history.AddLast(state);
if (history.Count > MaxHistorySize)
{
history.RemoveFirst();
}
//PrintUndoHistory();
}
lastState = state;
}
public void Clear()
{
history.Clear();
lastState = null;
}