1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
// 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
|
