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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_GFX_DISPLAY_OBSERVER_H_ | 5 #ifndef UI_GFX_DISPLAY_OBSERVER_H_ |
6 #define UI_GFX_DISPLAY_OBSERVER_H_ | 6 #define UI_GFX_DISPLAY_OBSERVER_H_ |
7 | 7 |
8 #include "ui/base/ui_export.h" | 8 #include "ui/gfx/gfx_export.h" |
9 | 9 |
10 namespace gfx { | 10 namespace gfx { |
11 class Display; | 11 class Display; |
12 | 12 |
13 // Observers for display configuration changes. | 13 // Observers for display configuration changes. |
14 // TODO(oshima): consolidate |WorkAreaWatcherObserver| and | 14 // TODO(oshima): consolidate |WorkAreaWatcherObserver| and |
15 // |DisplaySettingsProvier|. crbug.com/122863. | 15 // |DisplaySettingsProvier|. crbug.com/122863. |
16 class UI_EXPORT DisplayObserver { | 16 class UI_EXPORT DisplayObserver { |
17 public: | 17 public: |
18 // Called when the |display|'s bound has changed. | 18 // Called when the |display|'s bound has changed. |
19 virtual void OnDisplayBoundsChanged(const Display& display) = 0; | 19 virtual void OnDisplayBoundsChanged(const Display& display) = 0; |
20 | 20 |
21 // Called when |new_display| has been added. | 21 // Called when |new_display| has been added. |
22 virtual void OnDisplayAdded(const Display& new_display) = 0; | 22 virtual void OnDisplayAdded(const Display& new_display) = 0; |
23 | 23 |
24 // Called when |old_display| has been removed. | 24 // Called when |old_display| has been removed. |
25 virtual void OnDisplayRemoved(const Display& old_display) = 0; | 25 virtual void OnDisplayRemoved(const Display& old_display) = 0; |
26 | 26 |
27 protected: | 27 protected: |
28 virtual ~DisplayObserver(); | 28 virtual ~DisplayObserver(); |
29 }; | 29 }; |
30 | 30 |
31 } // namespace gfx | 31 } // namespace gfx |
32 | 32 |
33 #endif // UI_GFX_DISPLAY_OBSERVER_H_ | 33 #endif // UI_GFX_DISPLAY_OBSERVER_H_ |
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