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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef UI_BASE_MODELS_LIST_MODEL_OBSERVER_H_ | |
6 #define UI_BASE_MODELS_LIST_MODEL_OBSERVER_H_ | |
7 #pragma once | |
8 | |
9 #include "ui/base/ui_export.h" | |
10 | |
11 namespace ui { | |
12 | |
13 class UI_EXPORT ListModelObserver { | |
14 public: | |
15 // Invoked after items has been added to the model. | |
16 virtual void ListItemsAdded(int start, int count) = 0; | |
17 | |
18 // Invoked after items has been removed. |start| is the index before the | |
19 // removal. | |
20 virtual void ListItemsRemoved(int start, int count) = 0; | |
21 | |
22 // Invoked after items has been changed. | |
23 virtual void ListItemsChanged(int start, int count) = 0; | |
24 | |
25 protected: | |
26 virtual ~ListModelObserver() {} | |
27 }; | |
28 | |
29 } // namespace ui | |
30 | |
31 #endif // UI_BASE_MODELS_LIST_MODEL_OBSERVER_H_ | |
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