public bool Memorize()
{
if (!ShouldMemorize)
{
return(false);
}
//Delete index: current to end
//If there are 3 and now on index 2, index 3 to 0 -> don't delete
//If there are 3 and now on index 1, index 2 to 1 -> delete
int startIndex = curIndex + 1;
int removeCount = infos.Count - 1 - curIndex;
// Debug.WriteLine("RemoveRange({0}, {1})", startIndex, removeCount);
infos.RemoveRange(startIndex, removeCount);
if (UndoBufferCount > 0 && infos.Count > UndoBufferCount)
{
removeCount = infos.Count - UndoBufferCount;
infos.RemoveRange(0, removeCount);
}
//Replication of the model after changing its properties are stored.
EDOModel newModel = EDOSerializer.Clone(curModel);
infos.Add(new UndoInfo(newModel, stateProvider.SaveState()));
curIndex = infos.Count - 1;
// Debug.WriteLine("model's count=" + models.Count + " curIndex=" + curIndex);
// Debug.Assert(curIndex == models.Count - 1); // points at the bottom end
OnModelChanged();
return(true);
}
public bool ReplaceMemorize()
{
if (!ShouldMemorize)
{
return(false);
}
//replace the model of the last model of the current.
EDOModel newModel = EDOSerializer.Clone(curModel);
UndoInfo info = new UndoInfo(newModel, stateProvider.SaveState());
infos[curIndex] = info;
OnModelChanged();
return(true);
}
public UndoInfo Copy()
{
return(new UndoInfo(EDOSerializer.Clone(edoModel), (VMState)state.Clone()));
}