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1 // Copyright (c) 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CHROME_BROWSER_UI_ZOOM_ZOOM_LEVEL_PREFS_STORE_IMPL_H_ | |
6 #define CHROME_BROWSER_UI_ZOOM_ZOOM_LEVEL_PREFS_STORE_IMPL_H_ | |
7 | |
8 #include "content/public/browser/zoom_level_prefs_store.h" | |
9 | |
10 #include "base/callback.h" | |
11 #include "base/macros.h" | |
12 #include "base/memory/ref_counted.h" | |
13 #include "base/prefs/json_pref_store.h" | |
14 #include "base/prefs/pref_store.h" | |
15 #include "chrome/browser/prefs/pref_service_syncable.h" | |
16 #include "content/public/browser/host_zoom_map.h" | |
17 | |
18 namespace chrome { | |
19 | |
20 // A class to implement ZoomLevelPrefsStore. It also implements | |
21 // PrefStore::Observer so that it can track changes to the prefs. | |
22 // Finally, the prefs are also updated in response to zoom events | |
23 // from HostZoomMap. | |
24 class ZoomLevelPrefsStoreImpl : public PrefStore::Observer, | |
25 public content::ZoomLevelPrefsStore { | |
26 public: | |
27 ZoomLevelPrefsStoreImpl(); | |
28 virtual ~ZoomLevelPrefsStoreImpl(); | |
29 | |
30 // Implement ZoomLevelPrefsStore. | |
Peter Kasting
2014/09/11 00:45:48
Tiny nit: I'd make these comments look like "// co
wjmaclean
2014/09/11 21:00:51
Done.
| |
31 virtual void InitPrefsAndCopyToHostZoomMap( | |
32 const base::FilePath& file_path, | |
33 content::HostZoomMap* host_zoom_map) OVERRIDE; | |
34 virtual PrefService* GetPrefs() OVERRIDE; | |
35 | |
36 // Implement PrefObserver. | |
37 virtual void OnPrefValueChanged(const std::string& key) OVERRIDE; | |
38 virtual void OnInitializationCompleted(bool succeeded) OVERRIDE; | |
39 | |
40 // TODO(wjmaclean): remove this when migration is complete. | |
41 virtual void SetInitCallback(const base::Closure& callback); | |
42 | |
43 private: | |
44 void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change); | |
45 | |
46 base::Closure callback_; | |
47 scoped_refptr<JsonPrefStore> zoom_level_prefs_; | |
48 scoped_ptr<PrefServiceSyncable> pref_service_; | |
49 scoped_ptr<content::HostZoomMap::Subscription> zoom_subscription_; | |
50 content::HostZoomMap* host_zoom_map_; | |
51 | |
52 DISALLOW_COPY_AND_ASSIGN(ZoomLevelPrefsStoreImpl); | |
53 }; | |
54 | |
55 } // namespace chrome | |
56 | |
57 #endif // CHROME_BROWSER_UI_ZOOM_ZOOM_LEVEL_PREFS_STORE_IMPL_H_ | |
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