| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/android/application_status_listener.h" |
| |
| #include <jni.h> |
| |
| #include "base/lazy_instance.h" |
| #include "base/observer_list_threadsafe.h" |
| #include "jni/ApplicationStatus_jni.h" |
| |
| namespace base { |
| namespace android { |
| |
| namespace { |
| |
| struct LeakyLazyObserverListTraits : |
| base::internal::LeakyLazyInstanceTraits< |
| ObserverListThreadSafe<ApplicationStatusListener> > { |
| static ObserverListThreadSafe<ApplicationStatusListener>* |
| New(void* instance) { |
| ObserverListThreadSafe<ApplicationStatusListener>* ret = |
| base::internal::LeakyLazyInstanceTraits<ObserverListThreadSafe< |
| ApplicationStatusListener>>::New(instance); |
| // Leaky. |
| ret->AddRef(); |
| return ret; |
| } |
| }; |
| |
| LazyInstance<ObserverListThreadSafe<ApplicationStatusListener>, |
| LeakyLazyObserverListTraits> g_observers = |
| LAZY_INSTANCE_INITIALIZER; |
| |
| } // namespace |
| |
| ApplicationStatusListener::ApplicationStatusListener( |
| const ApplicationStatusListener::ApplicationStateChangeCallback& callback) |
| : callback_(callback) { |
| DCHECK(!callback_.is_null()); |
| g_observers.Get().AddObserver(this); |
| |
| Java_ApplicationStatus_registerThreadSafeNativeApplicationStateListener( |
| AttachCurrentThread()); |
| } |
| |
| ApplicationStatusListener::~ApplicationStatusListener() { |
| g_observers.Get().RemoveObserver(this); |
| } |
| |
| void ApplicationStatusListener::Notify(ApplicationState state) { |
| callback_.Run(state); |
| } |
| |
| // static |
| bool ApplicationStatusListener::RegisterBindings(JNIEnv* env) { |
| return RegisterNativesImpl(env); |
| } |
| |
| // static |
| void ApplicationStatusListener::NotifyApplicationStateChange( |
| ApplicationState state) { |
| g_observers.Get().Notify(FROM_HERE, &ApplicationStatusListener::Notify, |
| state); |
| } |
| |
| // static |
| ApplicationState ApplicationStatusListener::GetState() { |
| return static_cast<ApplicationState>( |
| Java_ApplicationStatus_getStateForApplication(AttachCurrentThread())); |
| } |
| |
| static void OnApplicationStateChange(JNIEnv* env, |
| const JavaParamRef<jclass>& clazz, |
| jint new_state) { |
| ApplicationState application_state = static_cast<ApplicationState>(new_state); |
| ApplicationStatusListener::NotifyApplicationStateChange(application_state); |
| } |
| |
| } // namespace android |
| } // namespace base |