Index: chrome/browser/ui/zoom/chrome_zoom_level_prefs.h |
diff --git a/chrome/browser/ui/zoom/chrome_zoom_level_prefs.h b/chrome/browser/ui/zoom/chrome_zoom_level_prefs.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..0b9d23c9582d6b4f23311fbaf1cc9a3f485ecf94 |
--- /dev/null |
+++ b/chrome/browser/ui/zoom/chrome_zoom_level_prefs.h |
@@ -0,0 +1,70 @@ |
+// Copyright (c) 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ |
+#define CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ |
+ |
+#include "base/callback.h" |
+#include "base/files/file_path.h" |
+#include "base/macros.h" |
+#include "base/memory/ref_counted.h" |
+#include "base/observer_list.h" |
+#include "base/prefs/json_pref_store.h" |
+#include "base/prefs/pref_change_registrar.h" |
+#include "base/prefs/pref_service.h" |
+#include "base/prefs/pref_store.h" |
+#include "content/public/browser/host_zoom_map.h" |
+ |
+namespace chrome { |
+ |
+// A class to manage per-partition default and per-host zoom levels in Chrome's |
+// preference system. It implements an interface between the content/ zoom |
+// levels in HostZoomMap and Chrome's preference persistence system. All changes |
+// to the per-partition default zoom levels from chrome/ flow through this |
+// class. Any changes to per-host levels are updated when HostZoomMap calls |
+// OnZoomLevelChanged. |
+class ChromeZoomLevelPrefs { |
+ public: |
+ typedef base::CallbackList<void(void)>::Subscription |
+ DefaultZoomLevelSubscription; |
+ |
+ // Exposed as static function for testing. |
+ static std::string GetHash(const base::FilePath& relative_path); |
+ |
+ // Initialize the pref_service and the profile_path via the constructor, |
+ // as these concepts won't be available in the content base class |
+ // (to be added later) which will define the InitPrefsAndCopyToHostZoomMap |
+ // interface. |pref_service_| must outlive this class. |
+ ChromeZoomLevelPrefs(PrefService* pref_service, |
+ const base::FilePath& profile_path); |
+ virtual ~ChromeZoomLevelPrefs(); |
+ |
+ virtual void InitPrefsAndCopyToHostZoomMap( |
+ const base::FilePath& partition_path, |
+ content::HostZoomMap* host_zoom_map); |
+ |
+ void SetDefaultZoomLevelPref(double level); |
+ double GetDefaultZoomLevelPref() const; |
+ scoped_ptr<DefaultZoomLevelSubscription> RegisterDefaultZoomLevelCallback( |
+ const base::Closure& callback); |
+ |
+ private: |
+ // This is a callback function that receives notifications from HostZoomMap |
+ // when per-host zoom levels change. It is used to update the per-host |
+ // zoom levels (if any) managed by this class (for its associated partition). |
battre
2014/10/08 11:27:10
nit: 2 spaces
wjmaclean
2014/10/10 14:40:29
Done.
|
+ void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change); |
+ |
+ PrefService* pref_service_; |
+ base::FilePath profile_path_; |
+ content::HostZoomMap* host_zoom_map_; |
+ scoped_ptr<content::HostZoomMap::Subscription> zoom_subscription_; |
+ std::string partition_key_; |
+ base::CallbackList<void(void)> default_zoom_changed_callbacks_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ChromeZoomLevelPrefs); |
+}; |
+ |
+} // namespace chrome |
+ |
+#endif // CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_PREFS_H_ |