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-rw-r--r--base/android/application_status_listener.h87
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diff --git a/base/android/application_status_listener.h b/base/android/application_status_listener.h
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--- a/base/android/application_status_listener.h
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-// 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.
-
-#ifndef BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_
-#define BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_
-
-#include <jni.h>
-
-#include "base/android/jni_android.h"
-#include "base/base_export.h"
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/singleton.h"
-#include "base/observer_list_threadsafe.h"
-
-namespace base {
-namespace android {
-
-// Define application state values like APPLICATION_STATE_VISIBLE in a
-// way that ensures they're always the same than their Java counterpart.
-//
-// Note that these states represent the most visible Activity state.
-// If there are activities with states paused and stopped, only
-// HAS_PAUSED_ACTIVITIES should be returned.
-//
-// A Java counterpart will be generated for this enum.
-// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.base
-enum ApplicationState {
- APPLICATION_STATE_HAS_RUNNING_ACTIVITIES = 1,
- APPLICATION_STATE_HAS_PAUSED_ACTIVITIES = 2,
- APPLICATION_STATE_HAS_STOPPED_ACTIVITIES = 3,
- APPLICATION_STATE_HAS_DESTROYED_ACTIVITIES = 4
-};
-
-// A native helper class to listen to state changes of the Android
-// Application. This mirrors org.chromium.base.ApplicationStatus.
-// any thread.
-//
-// To start listening, create a new instance, passing a callback to a
-// function that takes an ApplicationState parameter. To stop listening,
-// simply delete the listener object. The implementation guarantees
-// that the callback will always be called on the thread that created
-// the listener.
-//
-// Example:
-//
-// void OnApplicationStateChange(ApplicationState state) {
-// ...
-// }
-//
-// // Start listening.
-// ApplicationStatusListener* my_listener =
-// new ApplicationStatusListener(
-// base::Bind(&OnApplicationStateChange));
-//
-// ...
-//
-// // Stop listening.
-// delete my_listener
-//
-class BASE_EXPORT ApplicationStatusListener {
- public:
- typedef base::Callback<void(ApplicationState)> ApplicationStateChangeCallback;
-
- explicit ApplicationStatusListener(
- const ApplicationStateChangeCallback& callback);
- ~ApplicationStatusListener();
-
- // Internal use: must be public to be called from base_jni_registrar.cc
- static bool RegisterBindings(JNIEnv* env);
-
- // Internal use only: must be public to be called from JNI and unit tests.
- static void NotifyApplicationStateChange(ApplicationState state);
-
- private:
- void Notify(ApplicationState state);
-
- ApplicationStateChangeCallback callback_;
-
- DISALLOW_COPY_AND_ASSIGN(ApplicationStatusListener);
-};
-
-} // namespace android
-} // namespace base
-
-#endif // BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_