| // Copyright 2015 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_ANDROID_BACKGROUND_SYNC_NETWORK_OBSERVER_ANDROID_H_ |
| #define CONTENT_BROWSER_ANDROID_BACKGROUND_SYNC_NETWORK_OBSERVER_ANDROID_H_ |
| |
| #include "base/android/jni_android.h" |
| #include "base/android/scoped_java_ref.h" |
| #include "base/memory/weak_ptr.h" |
| #include "content/browser/background_sync/background_sync_network_observer.h" |
| #include "content/public/browser/browser_thread.h" |
| |
| namespace content { |
| |
| // BackgroundSyncNetworkObserverAndroid is a specialized |
| // BackgroundSyncNetworkObserver which is backed by a NetworkConnectionTracker |
| // that listens for network events even when the browser is paused, unlike the |
| // standard NetworkConnectionTracker. This ensures that sync events can be fired |
| // even when the browser is backgrounded, and other network observers are |
| // disabled. |
| // |
| // Lives on the UI thread. |
| class BackgroundSyncNetworkObserverAndroid |
| : public BackgroundSyncNetworkObserver { |
| public: |
| // Creates a BackgroundSyncNetworkObserver. |network_changed_callback| is |
| // called via PostMessage when the network connection changes. |
| BackgroundSyncNetworkObserverAndroid( |
| base::RepeatingClosure network_changed_callback); |
| |
| ~BackgroundSyncNetworkObserverAndroid() override; |
| |
| // Creates and initializes the Observer (below) instance. |
| void Init() override; |
| |
| // This class mediates all access to the Java BackgroundSyncNetworkObserver, |
| // which it creates and owns. It is in turn owned by the |
| // BackgroundSyncNetworkObserverAndroid. |
| class Observer : public base::RefCounted< |
| BackgroundSyncNetworkObserverAndroid::Observer> { |
| public: |
| static scoped_refptr<BackgroundSyncNetworkObserverAndroid::Observer> Create( |
| base::RepeatingCallback<void(network::mojom::ConnectionType)> callback); |
| |
| Observer(const Observer&) = delete; |
| Observer& operator=(const Observer&) = delete; |
| |
| void Init(); |
| |
| // Called from BackgroundSyncNetworkObserver.java over JNI whenever the |
| // connection type changes. This updates the current connection type seen by |
| // this class and calls the |network_changed_callback| provided to the |
| // constructor with the new connection type. |
| void NotifyConnectionTypeChanged( |
| JNIEnv* env, |
| const base::android::JavaParamRef<jobject>& jcaller, |
| jint new_connection_type); |
| |
| private: |
| friend class base::RefCounted< |
| BackgroundSyncNetworkObserverAndroid::Observer>; |
| |
| explicit Observer( |
| base::RepeatingCallback<void(network::mojom::ConnectionType)> callback); |
| ~Observer(); |
| |
| // This callback is run whenever the connection type changes. |
| base::RepeatingCallback<void(network::mojom::ConnectionType)> callback_; |
| base::android::ScopedJavaGlobalRef<jobject> j_observer_; |
| }; |
| |
| private: |
| void RegisterWithNetworkConnectionTracker( |
| network::NetworkConnectionTracker* network_connection_tracker) override; |
| |
| // Null until Init() is called. |
| scoped_refptr<Observer> observer_; |
| |
| base::WeakPtrFactory<BackgroundSyncNetworkObserverAndroid> weak_ptr_factory_{ |
| this}; |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_ANDROID_BACKGROUND_SYNC_NETWORK_OBSERVER_ANDROID_H_ |