chrome/browser/net/net_pref_observer.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_NET_NET_PREF_OBSERVER_H_
   6 #define CHROME_BROWSER_NET_NET_PREF_OBSERVER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/prefs/pref_member.h"
  10
  11 class PrefService;
  12
  13 namespace chrome_browser_net {
  14 class Predictor;
  15 }
  16
  17 namespace prerender {
  18 class PrerenderManager;
  19 }
  20
  21 namespace user_prefs {
  22 class PrefRegistrySyncable;
  23 }
  24
  25 // Monitors network-related preferences for changes and applies them.
  26 // The supplied PrefService must outlive this NetPrefObserver.
  27 // Must be used only on the UI thread.
  28 class NetPrefObserver {
  29  public:
  30   // |prefs| must be non-NULL and |*prefs| must outlive this.
  31   // |prerender_manager| may be NULL. If not, |*prerender_manager| must
  32   // outlive this.
  33   NetPrefObserver(PrefService* prefs,
  34                   prerender::PrerenderManager* prerender_manager,
  35                   chrome_browser_net::Predictor* predictor);
  36   virtual ~NetPrefObserver();
  37
  38   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  39
  40  private:
  41   void ApplySettings();
  42
  43   BooleanPrefMember network_prediction_enabled_;
  44   BooleanPrefMember spdy_disabled_;
  45   prerender::PrerenderManager* prerender_manager_;
  46   chrome_browser_net::Predictor* predictor_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(NetPrefObserver);
  49 };
  50
  51 #endif  // CHROME_BROWSER_NET_NET_PREF_OBSERVER_H_