chrome/browser/supervised_user/legacy/supervised_user_shared_settings_update.h

   1 // Copyright 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_SUPERVISED_USER_LEGACY_SUPERVISED_USER_SHARED_SETTINGS_UPDATE_H_
   6 #define CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_SHARED_SETTINGS_UPDATE_H_
   7
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "base/callback_list.h"
  12 #include "base/memory/scoped_ptr.h"
  13
  14 namespace base {
  15 class Value;
  16 }
  17
  18 class SupervisedUserSharedSettingsService;
  19
  20 // Lets clients of SupervisedUserSharedSettingsService change settings and wait
  21 // for the Sync server to acknowledge the change. The callback passed in the
  22 // constructor will be called with a true success value after the Sync server
  23 // has flipped the acknowledgement flag for the setting. If another client
  24 // changes the value in the mean time, the callback will be run with a false
  25 // success value. If the object is destroyed before that, the callback will not
  26 // be run. Note that any changes made to the setting will not be undone when
  27 // destroying the object, even if the update was not successful or was canceled.
  28 class SupervisedUserSharedSettingsUpdate {
  29  public:
  30   SupervisedUserSharedSettingsUpdate(
  31       SupervisedUserSharedSettingsService* service,
  32       const std::string& su_id,
  33       const std::string& key,
  34       scoped_ptr<base::Value> value,
  35       const base::Callback<void(bool)>& success_callback);
  36   ~SupervisedUserSharedSettingsUpdate();
  37
  38  private:
  39   typedef base::CallbackList<void(const std::string&, const std::string&)>
  40       CallbackList;
  41
  42   void OnSettingChanged(const std::string& su_id,
  43                         const std::string& key);
  44
  45   SupervisedUserSharedSettingsService* service_;
  46   std::string su_id_;
  47   std::string key_;
  48   scoped_ptr<base::Value> value_;
  49   base::Callback<void(bool)> callback_;
  50   scoped_ptr<CallbackList::Subscription> subscription_;
  51 };
  52
  53 #endif  // CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_SHARED_SETTINGS_UPDATE_H_