public void StartTransaction(UndoTransaction tran)
{
if (_curTran == null)
{
_curTran = tran;
ListOperations.Push(_undoActions, new UndoTransaction(tran.Name));
ListOperations.Push(_redoActions, new UndoTransaction(tran.Name));
}
}
public void EndTransaction(UndoTransaction tran)
{
if (_curTran == tran)
{
_curTran = null;
if (_undoActions.Count > 0)
{
UndoTransaction t = _undoActions[0] as UndoTransaction;
if (t != null && t.OperationsCount == 0)
{
ListOperations.Pop(_undoActions);
}
}
if (_redoActions.Count > 0)
{
UndoTransaction t = _redoActions[0] as UndoTransaction;
if (t != null && t.OperationsCount == 0)
{
ListOperations.Pop(_redoActions);
}
}
}
}