67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/android/activity_status.h"
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#include <jni.h>
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#include "base/memory/singleton.h"
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#include "jni/ActivityStatus_jni.h"
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namespace base {
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namespace android {
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ActivityStatus::Listener::Listener(
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const ActivityStatus::StateChangeCallback& callback)
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: callback_(callback) {
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ActivityStatus::GetInstance()->RegisterListener(this);
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}
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ActivityStatus::Listener::~Listener() {
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ActivityStatus::GetInstance()->UnregisterListener(this);
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}
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void ActivityStatus::Listener::Notify(ActivityState state) {
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callback_.Run(state);
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}
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// static
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ActivityStatus* ActivityStatus::GetInstance() {
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return Singleton<ActivityStatus,
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LeakySingletonTraits<ActivityStatus> >::get();
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}
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static void OnActivityStateChange(JNIEnv* env, jclass clazz, int new_state) {
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ActivityStatus* activity_status = ActivityStatus::GetInstance();
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ActivityState activity_state = static_cast<ActivityState>(new_state);
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activity_status->OnActivityStateChange(activity_state);
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}
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bool ActivityStatus::RegisterBindings(JNIEnv* env) {
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return RegisterNativesImpl(env);
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}
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ActivityStatus::ActivityStatus()
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: observers_(new ObserverListThreadSafe<Listener>()) {
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Java_ActivityStatus_registerThreadSafeNativeStateListener(
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base::android::AttachCurrentThread());
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}
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ActivityStatus::~ActivityStatus() {}
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void ActivityStatus::RegisterListener(Listener* listener) {
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observers_->AddObserver(listener);
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}
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void ActivityStatus::UnregisterListener(Listener* listener) {
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observers_->RemoveObserver(listener);
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}
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void ActivityStatus::OnActivityStateChange(ActivityState new_state) {
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observers_->Notify(&ActivityStatus::Listener::Notify, new_state);
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}
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} // namespace android
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} // namespace base
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