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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_ | 5 #ifndef BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_ |
6 #define BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_ | 6 #define BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_ |
7 | 7 |
8 #include <jni.h> | 8 #include <jni.h> |
9 | 9 |
10 #include "base/android/jni_android.h" | 10 #include "base/android/jni_android.h" |
11 #include "base/base_export.h" | 11 #include "base/base_export.h" |
12 #include "base/basictypes.h" | 12 #include "base/basictypes.h" |
13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
14 #include "base/memory/singleton.h" | 14 #include "base/memory/singleton.h" |
15 #include "base/observer_list_threadsafe.h" | 15 #include "base/observer_list_threadsafe.h" |
16 | 16 |
17 namespace base { | 17 namespace base { |
18 namespace android { | 18 namespace android { |
19 | 19 |
20 // Define application state values like APPLICATION_STATE_VISIBLE in a | 20 // Define application state values like APPLICATION_STATE_VISIBLE in a |
21 // way that ensures they're always the same than their Java counterpart. | 21 // way that ensures they're always the same than their Java counterpart. |
| 22 // |
| 23 // Note that these states represent the most visible Activity state. |
| 24 // If there are activities with states paused and stopped, only |
| 25 // HAS_PAUSED_ACTIVITIES should be returned. |
| 26 // |
| 27 // A Java counterpart will be generated for this enum. |
| 28 // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.base |
22 enum ApplicationState { | 29 enum ApplicationState { |
23 #define DEFINE_APPLICATION_STATE(x, y) APPLICATION_STATE_##x = y, | 30 APPLICATION_STATE_HAS_RUNNING_ACTIVITIES = 1, |
24 #include "base/android/application_state_list.h" | 31 APPLICATION_STATE_HAS_PAUSED_ACTIVITIES = 2, |
25 #undef DEFINE_APPLICATION_STATE | 32 APPLICATION_STATE_HAS_STOPPED_ACTIVITIES = 3, |
| 33 APPLICATION_STATE_HAS_DESTROYED_ACTIVITIES = 4 |
26 }; | 34 }; |
27 | 35 |
28 // A native helper class to listen to state changes of the Android | 36 // A native helper class to listen to state changes of the Android |
29 // Application. This mirrors org.chromium.base.ApplicationStatus. | 37 // Application. This mirrors org.chromium.base.ApplicationStatus. |
30 // any thread. | 38 // any thread. |
31 // | 39 // |
32 // To start listening, create a new instance, passing a callback to a | 40 // To start listening, create a new instance, passing a callback to a |
33 // function that takes an ApplicationState parameter. To stop listening, | 41 // function that takes an ApplicationState parameter. To stop listening, |
34 // simply delete the listener object. The implementation guarantees | 42 // simply delete the listener object. The implementation guarantees |
35 // that the callback will always be called on the thread that created | 43 // that the callback will always be called on the thread that created |
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70 | 78 |
71 ApplicationStateChangeCallback callback_; | 79 ApplicationStateChangeCallback callback_; |
72 | 80 |
73 DISALLOW_COPY_AND_ASSIGN(ApplicationStatusListener); | 81 DISALLOW_COPY_AND_ASSIGN(ApplicationStatusListener); |
74 }; | 82 }; |
75 | 83 |
76 } // namespace android | 84 } // namespace android |
77 } // namespace base | 85 } // namespace base |
78 | 86 |
79 #endif // BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_ | 87 #endif // BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_ |
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