public void Undo(ChangeSet value)
{
bool done = false;
_isWorking = true;
try
{
do
{
ChangeSet changeSet = _undoStack.Pop();
if (changeSet == value || _undoStack.Count == 0)
done = true;
changeSet.Undo();
_redoStack.Push(changeSet);
RaiseStateChangeEvent();
} while (!done);
}
finally
{
_isWorking = false;
}
}
public void BeginChangeSetBatch(string batchDescription)
{
if (_isBatch)
return;
_batchCounter++;
_isBatch = true;
if (_batchCounter == 1)
{
_currentBatch = new ChangeSet(batchDescription);
_undoStack.Push(_currentBatch);
}
}
public void EndChangeSetBatch()
{
_batchCounter--;
if (_batchCounter < 0)
_batchCounter = 0;
if (_batchCounter == 0)
{
_currentBatch = null;
_isBatch = false;
}
}