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 JINGLE_NOTIFIER_LISTENER_NON_BLOCKING_PUSH_CLIENT_H_ 6 #define JINGLE_NOTIFIER_LISTENER_NON_BLOCKING_PUSH_CLIENT_H_ 7 8 #include "base/basictypes.h" 9 #include "base/callback_forward.h" 10 #include "base/compiler_specific.h" 11 #include "base/memory/ref_counted.h" 12 #include "base/memory/scoped_ptr.h" 13 #include "base/memory/weak_ptr.h" 14 #include "base/observer_list.h" 15 #include "base/threading/thread_checker.h" 16 #include "jingle/notifier/listener/push_client.h" 17 #include "jingle/notifier/listener/push_client_observer.h" 18 19 namespace base { 20 class SingleThreadTaskRunner; 21 } // namespace base 22 23 namespace notifier { 24 25 // This class implements a PushClient that doesn't block; it delegates 26 // to another blocking PushClient on a separate thread. 27 // 28 // This class must be used on a single thread. 29 class NonBlockingPushClient : public PushClient { 30 public: 31 // The type for a function that creates a (blocking) PushClient. 32 // Will be called on the delegate task runner. 33 typedef base::Callback<scoped_ptr<PushClient>()> 34 CreateBlockingPushClientCallback; 35 36 // Runs the given callback on the given task runner, and delegates 37 // to that PushClient. 38 explicit NonBlockingPushClient( 39 const scoped_refptr<base::SingleThreadTaskRunner>& delegate_task_runner, 40 const CreateBlockingPushClientCallback& 41 create_blocking_push_client_callback); 42 virtual ~NonBlockingPushClient(); 43 44 // PushClient implementation. 45 virtual void AddObserver(PushClientObserver* observer) OVERRIDE; 46 virtual void RemoveObserver(PushClientObserver* observer) OVERRIDE; 47 virtual void UpdateSubscriptions( 48 const SubscriptionList& subscriptions) OVERRIDE; 49 virtual void UpdateCredentials( 50 const std::string& email, const std::string& token) OVERRIDE; 51 virtual void SendNotification(const Notification& notification) OVERRIDE; 52 virtual void SendPing() OVERRIDE; 53 54 private: 55 class Core; 56 57 void OnNotificationsEnabled(); 58 void OnNotificationsDisabled(NotificationsDisabledReason reason); 59 void OnIncomingNotification(const Notification& notification); 60 void OnPingResponse(); 61 62 base::ThreadChecker thread_checker_; 63 base::WeakPtrFactory<NonBlockingPushClient> weak_ptr_factory_; 64 const scoped_refptr<base::SingleThreadTaskRunner> delegate_task_runner_; 65 const scoped_refptr<Core> core_; 66 67 ObserverList<PushClientObserver> observers_; 68 69 DISALLOW_COPY_AND_ASSIGN(NonBlockingPushClient); 70 }; 71 72 } // namespace notifier 73 74 #endif // JINGLE_NOTIFIER_LISTENER_NON_BLOCKING_PUSH_CLIENT_H_ 75
