private bool ProceedWithMerge(MockTextUndoTransaction transaction1, MockTextUndoTransaction transaction2) { MockTextUndoHistoryRegistry registry = UndoHistoryRegistry; return(transaction1.MergePolicy != null && transaction2.MergePolicy != null && transaction1.MergePolicy.TestCompatiblePolicy(transaction2.MergePolicy) && transaction1.MergePolicy.CanMerge(transaction1, transaction2)); }
public MockTextUndoHistory(MockTextUndoHistoryRegistry undoHistoryRegistry) { _currentTransaction = null; UndoHistoryRegistry = undoHistoryRegistry; _undoStack = new Stack <ITextUndoTransaction>(); _redoStack = new Stack <ITextUndoTransaction>(); _activeUndoOperationPrimitive = null; _state = TextUndoHistoryState.Idle; }