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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 CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_ | 5 #ifndef CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_ |
6 #define CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_ | 6 #define CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_ |
7 | 7 |
| 8 #include "chrome/browser/ui/zoom/zoom_controller.h" |
| 9 |
8 namespace content { | 10 namespace content { |
9 class WebContents; | 11 class WebContents; |
10 } | 12 } |
11 | 13 |
12 // Interface for objects that wish to be notified of changes in ZoomController. | 14 // Interface for objects that wish to be notified of changes in ZoomController. |
13 class ZoomObserver { | 15 class ZoomObserver { |
14 public: | 16 public: |
15 // Notification that the zoom percentage has changed. | 17 // Notification that the zoom percentage has changed. |
16 virtual void OnZoomChanged(content::WebContents* source, | 18 virtual void OnZoomChanged(content::WebContents* source, |
17 bool can_show_bubble) = 0; | 19 bool can_show_bubble) {} |
| 20 |
| 21 // Notification that a zoom change has been initiated for |web_contents|. |
| 22 virtual void OnZoomChangeInitiated(content::WebContents* web_contents, |
| 23 double old_zoom_level, |
| 24 double new_zoom_level, |
| 25 ZoomMode zoom_mode) {} |
18 | 26 |
19 protected: | 27 protected: |
20 virtual ~ZoomObserver() {} | 28 virtual ~ZoomObserver() {} |
21 }; | 29 }; |
22 | 30 |
23 #endif // CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_ | 31 #endif // CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_ |
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