ios/chrome/browser/prefs/pref_observer_bridge.h

   1 // Copyright 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 IOS_CHROME_BROWSER_PREFS_PREF_OBSERVER_BRIDGE_H_
   6 #define IOS_CHROME_BROWSER_PREFS_PREF_OBSERVER_BRIDGE_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11
  12 class PrefChangeRegistrar;
  13
  14 @protocol PrefObserverDelegate
  15 - (void)onPreferenceChanged:(const std::string&)preferenceName;
  16 @end
  17
  18 class PrefObserverBridge {
  19  public:
  20   explicit PrefObserverBridge(id<PrefObserverDelegate> delegate);
  21   virtual ~PrefObserverBridge();
  22
  23   virtual void ObserveChangesForPreference(const std::string& pref_name,
  24                                            PrefChangeRegistrar* registrar);
  25
  26  private:
  27   virtual void OnPreferenceChanged(const std::string& pref_name);
  28
  29   id<PrefObserverDelegate> delegate_;
  30 };
  31
  32 #endif  // IOS_CHROME_BROWSER_PREFS_PREF_OBSERVER_BRIDGE_H_