1 // Copyright 2013 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_WEB_RESOURCE_EULA_ACCEPTED_NOTIFIER_H_ 6 #define CHROME_BROWSER_WEB_RESOURCE_EULA_ACCEPTED_NOTIFIER_H_ 7 8 #include "base/basictypes.h" 9 #include "base/prefs/pref_change_registrar.h" 10 11 class PrefService; 12 13 // Helper class for querying the EULA accepted state and receiving a 14 // notification when the EULA is accepted. 15 class EulaAcceptedNotifier { 16 public: 17 // Observes EULA accepted state changes. 18 class Observer { 19 public: 20 virtual void OnEulaAccepted() = 0; 21 }; 22 23 explicit EulaAcceptedNotifier(PrefService* local_state); 24 virtual ~EulaAcceptedNotifier(); 25 26 // Initializes this class with the given |observer|. Must be called before 27 // the class is used. 28 void Init(Observer* observer); 29 30 // Returns true if the EULA has been accepted. If the EULA has not yet been 31 // accepted, begins monitoring the EULA state and will notify the observer 32 // once the EULA has been accepted. 33 virtual bool IsEulaAccepted(); 34 35 // Factory method for this class. 36 static EulaAcceptedNotifier* Create(); 37 38 protected: 39 // Notifies the observer that the EULA has been updated, made protected for 40 // testing. 41 void NotifyObserver(); 42 43 private: 44 // Callback for EULA accepted pref change notification. 45 void OnPrefChanged(); 46 47 // Local state pref service for querying the EULA accepted pref. 48 PrefService* local_state_; 49 50 // Used to listen for the EULA accepted pref change notification. 51 PrefChangeRegistrar registrar_; 52 53 // Observer of the EULA accepted notification. 54 Observer* observer_; 55 56 DISALLOW_COPY_AND_ASSIGN(EulaAcceptedNotifier); 57 }; 58 59 #endif // CHROME_BROWSER_WEB_RESOURCE_EULA_ACCEPTED_NOTIFIER_H_ 60
