| // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef APP_TABLE_MODEL_OBSERVER_H_ |
| #define APP_TABLE_MODEL_OBSERVER_H_ |
| #pragma once |
| |
| // Observer for a TableModel. Anytime the model changes, it must notify its |
| // observer. |
| class TableModelObserver { |
| public: |
| // Invoked when the model has been completely changed. |
| virtual void OnModelChanged() = 0; |
| |
| // Invoked when a range of items has changed. |
| virtual void OnItemsChanged(int start, int length) = 0; |
| |
| // Invoked when new items are added. |
| virtual void OnItemsAdded(int start, int length) = 0; |
| |
| // Invoked when a range of items has been removed. |
| virtual void OnItemsRemoved(int start, int length) = 0; |
| |
| protected: |
| virtual ~TableModelObserver() {} |
| }; |
| |
| #endif // APP_TABLE_MODEL_OBSERVER_H_ |