chrome/browser/ui/prefs/prefs_tab_helper.h

   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
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_PREFS_PREFS_TAB_HELPER_H_
   6 #define CHROME_BROWSER_UI_PREFS_PREFS_TAB_HELPER_H_
   7
   8 #include "base/callback_list.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "base/prefs/pref_change_registrar.h"
  12 #include "chrome/browser/ui/zoom/chrome_zoom_level_prefs.h"
  13 #include "content/public/browser/notification_observer.h"
  14 #include "content/public/browser/notification_registrar.h"
  15 #include "content/public/browser/web_contents_user_data.h"
  16
  17 class OverlayUserPrefStore;
  18 class PrefService;
  19 class Profile;
  20
  21 namespace content {
  22 class WebContents;
  23 }
  24
  25 namespace user_prefs {
  26 class PrefRegistrySyncable;
  27 }
  28
  29 // Per-tab class to handle user preferences.
  30 class PrefsTabHelper : public content::NotificationObserver,
  31                        public content::WebContentsUserData<PrefsTabHelper> {
  32  public:
  33   virtual ~PrefsTabHelper();
  34
  35   static void InitIncognitoUserPrefStore(OverlayUserPrefStore* pref_store);
  36   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  37
  38  protected:
  39   // Update the RenderView's WebPreferences. Exposed as protected for testing.
  40   virtual void UpdateWebPreferences();
  41
  42  private:
  43   explicit PrefsTabHelper(content::WebContents* contents);
  44   friend class content::WebContentsUserData<PrefsTabHelper>;
  45
  46   // content::NotificationObserver overrides:
  47   virtual void Observe(int type,
  48                        const content::NotificationSource& source,
  49                        const content::NotificationDetails& details) override;
  50
  51   // Update the WebContents's RendererPreferences.
  52   void UpdateRendererPreferences();
  53
  54   Profile* GetProfile();
  55
  56   void OnFontFamilyPrefChanged(const std::string& pref_name);
  57   void OnWebPrefChanged(const std::string& pref_name);
  58
  59   content::WebContents* web_contents_;
  60   content::NotificationRegistrar registrar_;
  61   PrefChangeRegistrar pref_change_registrar_;
  62   scoped_ptr<base::CallbackList<void(void)>::Subscription>
  63       style_sheet_subscription_;
  64   scoped_ptr<chrome::ChromeZoomLevelPrefs::DefaultZoomLevelSubscription>
  65       default_zoom_level_subscription_;
  66   base::WeakPtrFactory<PrefsTabHelper> weak_ptr_factory_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(PrefsTabHelper);
  69 };
  70
  71 #endif  // CHROME_BROWSER_UI_PREFS_PREFS_TAB_HELPER_H_