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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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_CHROME_ZOOM_LEVEL_PREFS_H_ | 5 #ifndef CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ |
6 #define CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ | 6 #define CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ |
7 | 7 |
8 #include "base/callback.h" | 8 #include "base/callback.h" |
9 #include "base/files/file_path.h" | 9 #include "base/files/file_path.h" |
10 #include "base/macros.h" | 10 #include "base/macros.h" |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 #include "base/memory/weak_ptr.h" | 12 #include "base/memory/weak_ptr.h" |
13 #include "base/observer_list.h" | 13 #include "base/observer_list.h" |
14 #include "components/prefs/json_pref_store.h" | 14 #include "components/prefs/json_pref_store.h" |
15 #include "components/prefs/pref_change_registrar.h" | 15 #include "components/prefs/pref_change_registrar.h" |
16 #include "components/prefs/pref_service.h" | 16 #include "components/prefs/pref_service.h" |
17 #include "components/prefs/pref_store.h" | 17 #include "components/prefs/pref_store.h" |
18 #include "content/public/browser/host_zoom_map.h" | 18 #include "content/public/browser/host_zoom_map.h" |
19 #include "content/public/browser/zoom_level_delegate.h" | 19 #include "content/public/browser/zoom_level_delegate.h" |
20 | 20 |
21 namespace base { | 21 namespace base { |
22 class DictionaryValue; | 22 class DictionaryValue; |
23 } | 23 } |
24 | 24 |
25 namespace ui_zoom { | 25 namespace zoom { |
26 class ZoomEventManager; | 26 class ZoomEventManager; |
27 } | 27 } |
28 | 28 |
29 // A class to manage per-partition default and per-host zoom levels in Chrome's | 29 // A class to manage per-partition default and per-host zoom levels in Chrome's |
30 // preference system. It implements an interface between the content/ zoom | 30 // preference system. It implements an interface between the content/ zoom |
31 // levels in HostZoomMap and Chrome's preference system. All changes | 31 // levels in HostZoomMap and Chrome's preference system. All changes |
32 // to the per-partition default zoom levels from chrome/ flow through this | 32 // to the per-partition default zoom levels from chrome/ flow through this |
33 // class. Any changes to per-host levels are updated when HostZoomMap calls | 33 // class. Any changes to per-host levels are updated when HostZoomMap calls |
34 // OnZoomLevelChanged. | 34 // OnZoomLevelChanged. |
35 class ChromeZoomLevelPrefs : public content::ZoomLevelDelegate { | 35 class ChromeZoomLevelPrefs : public content::ZoomLevelDelegate { |
36 public: | 36 public: |
37 typedef base::CallbackList<void(void)>::Subscription | 37 typedef base::CallbackList<void(void)>::Subscription |
38 DefaultZoomLevelSubscription; | 38 DefaultZoomLevelSubscription; |
39 | 39 |
40 // Initialize the pref_service and the partition_key via the constructor, | 40 // Initialize the pref_service and the partition_key via the constructor, |
41 // as these concepts won't be available in the content base class | 41 // as these concepts won't be available in the content base class |
42 // ZoomLevelDelegate, which will define the InitHostZoomMap interface. | 42 // ZoomLevelDelegate, which will define the InitHostZoomMap interface. |
43 // |pref_service_| must outlive this class. | 43 // |pref_service_| must outlive this class. |
44 ChromeZoomLevelPrefs( | 44 ChromeZoomLevelPrefs( |
45 PrefService* pref_service, | 45 PrefService* pref_service, |
46 const base::FilePath& profile_path, | 46 const base::FilePath& profile_path, |
47 const base::FilePath& partition_path, | 47 const base::FilePath& partition_path, |
48 base::WeakPtr<ui_zoom::ZoomEventManager> zoom_event_manager); | 48 base::WeakPtr<zoom::ZoomEventManager> zoom_event_manager); |
49 ~ChromeZoomLevelPrefs() override; | 49 ~ChromeZoomLevelPrefs() override; |
50 | 50 |
51 static std::string GetHashForTesting(const base::FilePath& relative_path); | 51 static std::string GetHashForTesting(const base::FilePath& relative_path); |
52 | 52 |
53 void SetDefaultZoomLevelPref(double level); | 53 void SetDefaultZoomLevelPref(double level); |
54 double GetDefaultZoomLevelPref() const; | 54 double GetDefaultZoomLevelPref() const; |
55 std::unique_ptr<DefaultZoomLevelSubscription> | 55 std::unique_ptr<DefaultZoomLevelSubscription> |
56 RegisterDefaultZoomLevelCallback(const base::Closure& callback); | 56 RegisterDefaultZoomLevelCallback(const base::Closure& callback); |
57 | 57 |
58 void ExtractPerHostZoomLevels( | 58 void ExtractPerHostZoomLevels( |
59 const base::DictionaryValue* host_zoom_dictionary, | 59 const base::DictionaryValue* host_zoom_dictionary, |
60 bool sanitize_partition_host_zoom_levels); | 60 bool sanitize_partition_host_zoom_levels); |
61 | 61 |
62 // content::ZoomLevelDelegate | 62 // content::ZoomLevelDelegate |
63 void InitHostZoomMap(content::HostZoomMap* host_zoom_map) override; | 63 void InitHostZoomMap(content::HostZoomMap* host_zoom_map) override; |
64 | 64 |
65 private: | 65 private: |
66 // This is a callback function that receives notifications from HostZoomMap | 66 // This is a callback function that receives notifications from HostZoomMap |
67 // when per-host zoom levels change. It is used to update the per-host | 67 // when per-host zoom levels change. It is used to update the per-host |
68 // zoom levels (if any) managed by this class (for its associated partition). | 68 // zoom levels (if any) managed by this class (for its associated partition). |
69 void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change); | 69 void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change); |
70 | 70 |
71 PrefService* pref_service_; | 71 PrefService* pref_service_; |
72 base::WeakPtr<ui_zoom::ZoomEventManager> zoom_event_manager_; | 72 base::WeakPtr<zoom::ZoomEventManager> zoom_event_manager_; |
73 content::HostZoomMap* host_zoom_map_; | 73 content::HostZoomMap* host_zoom_map_; |
74 std::unique_ptr<content::HostZoomMap::Subscription> zoom_subscription_; | 74 std::unique_ptr<content::HostZoomMap::Subscription> zoom_subscription_; |
75 std::string partition_key_; | 75 std::string partition_key_; |
76 base::CallbackList<void(void)> default_zoom_changed_callbacks_; | 76 base::CallbackList<void(void)> default_zoom_changed_callbacks_; |
77 | 77 |
78 DISALLOW_COPY_AND_ASSIGN(ChromeZoomLevelPrefs); | 78 DISALLOW_COPY_AND_ASSIGN(ChromeZoomLevelPrefs); |
79 }; | 79 }; |
80 | 80 |
81 #endif // CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ | 81 #endif // CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ |
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