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      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_SUPERVISED_USER_SHARED_SETTINGS_UPDATE_H_
      6 #define CHROME_BROWSER_SUPERVISED_USER_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_SUPERVISED_USER_SHARED_SETTINGS_UPDATE_H_
     54