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Side by Side Diff: chrome/browser/ui/zoom/chrome_zoom_level_prefs.h

Issue 393133002: Migrate HostZoomMap to live in StoragePartition. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Address comments; patch for landing. Created 6 years, 1 month ago
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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/observer_list.h" 12 #include "base/observer_list.h"
13 #include "base/prefs/json_pref_store.h" 13 #include "base/prefs/json_pref_store.h"
14 #include "base/prefs/pref_change_registrar.h" 14 #include "base/prefs/pref_change_registrar.h"
15 #include "base/prefs/pref_service.h" 15 #include "base/prefs/pref_service.h"
16 #include "base/prefs/pref_store.h" 16 #include "base/prefs/pref_store.h"
17 #include "content/public/browser/host_zoom_map.h" 17 #include "content/public/browser/host_zoom_map.h"
18 #include "content/public/browser/zoom_level_delegate.h"
18 19
19 namespace base { 20 namespace base {
20 class DictionaryValue; 21 class DictionaryValue;
21 } 22 }
22 23
23 namespace chrome { 24 namespace chrome {
24 25
25 // A class to manage per-partition default and per-host zoom levels in Chrome's 26 // A class to manage per-partition default and per-host zoom levels in Chrome's
26 // preference system. It implements an interface between the content/ zoom 27 // preference system. It implements an interface between the content/ zoom
27 // levels in HostZoomMap and Chrome's preference system. All changes 28 // levels in HostZoomMap and Chrome's preference system. All changes
28 // to the per-partition default zoom levels from chrome/ flow through this 29 // to the per-partition default zoom levels from chrome/ flow through this
29 // class. Any changes to per-host levels are updated when HostZoomMap calls 30 // class. Any changes to per-host levels are updated when HostZoomMap calls
30 // OnZoomLevelChanged. 31 // OnZoomLevelChanged.
31 class ChromeZoomLevelPrefs { 32 class ChromeZoomLevelPrefs : public content::ZoomLevelDelegate {
32 public: 33 public:
33 typedef base::CallbackList<void(void)>::Subscription 34 typedef base::CallbackList<void(void)>::Subscription
34 DefaultZoomLevelSubscription; 35 DefaultZoomLevelSubscription;
35 36
36 // Initialize the pref_service and the profile_path via the constructor, 37 // Initialize the pref_service and the partition_key via the constructor,
37 // as these concepts won't be available in the content base class 38 // as these concepts won't be available in the content base class
38 // (to be added later) which will define the InitPrefsAndCopyToHostZoomMap 39 // ZoomLevelDelegate, which will define the InitHostZoomMap interface.
39 // interface. |pref_service_| must outlive this class. 40 // |pref_service_| must outlive this class.
40 ChromeZoomLevelPrefs(PrefService* pref_service, 41 ChromeZoomLevelPrefs(PrefService* pref_service,
41 const base::FilePath& profile_path); 42 const base::FilePath& profile_path,
43 const base::FilePath& partition_path);
42 virtual ~ChromeZoomLevelPrefs(); 44 virtual ~ChromeZoomLevelPrefs();
43 45
44 static std::string GetHashForTesting(const base::FilePath& relative_path); 46 static std::string GetHashForTesting(const base::FilePath& relative_path);
45 47
46 virtual void InitPrefsAndCopyToHostZoomMap(
47 const base::FilePath& partition_path,
48 content::HostZoomMap* host_zoom_map);
49
50 void SetDefaultZoomLevelPref(double level); 48 void SetDefaultZoomLevelPref(double level);
51 double GetDefaultZoomLevelPref() const; 49 double GetDefaultZoomLevelPref() const;
52 scoped_ptr<DefaultZoomLevelSubscription> RegisterDefaultZoomLevelCallback( 50 scoped_ptr<DefaultZoomLevelSubscription> RegisterDefaultZoomLevelCallback(
53 const base::Closure& callback); 51 const base::Closure& callback);
54 52
55 void ExtractPerHostZoomLevels( 53 void ExtractPerHostZoomLevels(
56 const base::DictionaryValue* host_zoom_dictionary, 54 const base::DictionaryValue* host_zoom_dictionary,
57 bool sanitize_partition_host_zoom_levels); 55 bool sanitize_partition_host_zoom_levels);
58 56
57 // content::ZoomLevelDelegate
58 void InitHostZoomMap(content::HostZoomMap* host_zoom_map) override;
59
59 private: 60 private:
60 // This is a callback function that receives notifications from HostZoomMap 61 // This is a callback function that receives notifications from HostZoomMap
61 // when per-host zoom levels change. It is used to update the per-host 62 // when per-host zoom levels change. It is used to update the per-host
62 // zoom levels (if any) managed by this class (for its associated partition). 63 // zoom levels (if any) managed by this class (for its associated partition).
63 void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change); 64 void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change);
64 65
65 PrefService* pref_service_; 66 PrefService* pref_service_;
66 const base::FilePath profile_path_;
67 content::HostZoomMap* host_zoom_map_; 67 content::HostZoomMap* host_zoom_map_;
68 scoped_ptr<content::HostZoomMap::Subscription> zoom_subscription_; 68 scoped_ptr<content::HostZoomMap::Subscription> zoom_subscription_;
69 std::string partition_key_; 69 std::string partition_key_;
70 base::CallbackList<void(void)> default_zoom_changed_callbacks_; 70 base::CallbackList<void(void)> default_zoom_changed_callbacks_;
71 71
72 DISALLOW_COPY_AND_ASSIGN(ChromeZoomLevelPrefs); 72 DISALLOW_COPY_AND_ASSIGN(ChromeZoomLevelPrefs);
73 }; 73 };
74 74
75 } // namespace chrome 75 } // namespace chrome
76 76
77 #endif // CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ 77 #endif // CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_
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