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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_CONTROLLER_H_ | 5 #ifndef CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_ |
6 #define CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_ | 6 #define CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/compiler_specific.h" | 9 #include "base/compiler_specific.h" |
10 #include "base/prefs/public/pref_member.h" | 10 #include "base/prefs/public/pref_member.h" |
11 #include "content/public/browser/notification_observer.h" | 11 #include "content/public/browser/host_zoom_map.h" |
12 #include "content/public/browser/notification_registrar.h" | |
13 #include "content/public/browser/web_contents_observer.h" | 12 #include "content/public/browser/web_contents_observer.h" |
14 #include "content/public/browser/web_contents_user_data.h" | 13 #include "content/public/browser/web_contents_user_data.h" |
15 | 14 |
16 class ZoomObserver; | 15 class ZoomObserver; |
17 | 16 |
18 namespace content { | 17 namespace content { |
19 class WebContents; | 18 class WebContents; |
20 } | 19 } |
21 | 20 |
22 // Per-tab class to manage the Omnibox zoom icon. | 21 // Per-tab class to manage the Omnibox zoom icon. |
23 class ZoomController : public content::NotificationObserver, | 22 class ZoomController : public content::WebContentsObserver, |
24 public content::WebContentsObserver, | |
25 public content::WebContentsUserData<ZoomController> { | 23 public content::WebContentsUserData<ZoomController> { |
26 public: | 24 public: |
27 virtual ~ZoomController(); | 25 virtual ~ZoomController(); |
28 | 26 |
29 int zoom_percent() const { return zoom_percent_; } | 27 int zoom_percent() const { return zoom_percent_; } |
30 | 28 |
31 // Convenience method to quickly check if the tab's at default zoom. | 29 // Convenience method to quickly check if the tab's at default zoom. |
32 bool IsAtDefaultZoom() const; | 30 bool IsAtDefaultZoom() const; |
33 | 31 |
34 // Returns which image should be loaded for the current zoom level. | 32 // Returns which image should be loaded for the current zoom level. |
35 int GetResourceForZoomLevel() const; | 33 int GetResourceForZoomLevel() const; |
36 | 34 |
37 void set_observer(ZoomObserver* observer) { observer_ = observer; } | 35 void set_observer(ZoomObserver* observer) { observer_ = observer; } |
38 | 36 |
39 // content::WebContentsObserver overrides: | 37 // content::WebContentsObserver overrides: |
40 virtual void DidNavigateMainFrame( | 38 virtual void DidNavigateMainFrame( |
41 const content::LoadCommittedDetails& details, | 39 const content::LoadCommittedDetails& details, |
42 const content::FrameNavigateParams& params) OVERRIDE; | 40 const content::FrameNavigateParams& params) OVERRIDE; |
43 | 41 |
44 // content::NotificationObserver overrides: | |
45 virtual void Observe(int type, | |
46 const content::NotificationSource& source, | |
47 const content::NotificationDetails& details) OVERRIDE; | |
48 | |
49 private: | 42 private: |
50 explicit ZoomController(content::WebContents* web_contents); | 43 explicit ZoomController(content::WebContents* web_contents); |
51 friend class content::WebContentsUserData<ZoomController>; | 44 friend class content::WebContentsUserData<ZoomController>; |
52 friend class ZoomControllerTest; | 45 friend class ZoomControllerTest; |
53 | 46 |
| 47 void OnZoomLevelChanged(const std::string& host); |
| 48 |
54 // Updates the zoom icon and zoom percentage based on current values and | 49 // Updates the zoom icon and zoom percentage based on current values and |
55 // notifies the observer if changes have occurred. |host| may be empty, | 50 // notifies the observer if changes have occurred. |host| may be empty, |
56 // meaning the change should apply to ~all sites. If it is not empty, the | 51 // meaning the change should apply to ~all sites. If it is not empty, the |
57 // change only affects sites with the given host. | 52 // change only affects sites with the given host. |
58 void UpdateState(const std::string& host); | 53 void UpdateState(const std::string& host); |
59 | 54 |
60 // The current zoom percentage. | 55 // The current zoom percentage. |
61 int zoom_percent_; | 56 int zoom_percent_; |
62 | 57 |
63 content::NotificationRegistrar registrar_; | |
64 | |
65 // Used to access the default zoom level preference. | 58 // Used to access the default zoom level preference. |
66 DoublePrefMember default_zoom_level_; | 59 DoublePrefMember default_zoom_level_; |
67 | 60 |
68 // Observer receiving notifications on state changes. | 61 // Observer receiving notifications on state changes. |
69 ZoomObserver* observer_; | 62 ZoomObserver* observer_; |
70 | 63 |
| 64 content::BrowserContext* browser_context_; |
| 65 |
| 66 content::HostZoomMap::ZoomLevelChangedCallback zoom_callback_; |
| 67 |
71 DISALLOW_COPY_AND_ASSIGN(ZoomController); | 68 DISALLOW_COPY_AND_ASSIGN(ZoomController); |
72 }; | 69 }; |
73 | 70 |
74 #endif // CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_ | 71 #endif // CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_ |
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