Home | History | Annotate | Download | only in android 
      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "net/android/network_change_notifier_delegate_android.h"
      6 
      7 #include "base/logging.h"
      8 #include "jni/NetworkChangeNotifier_jni.h"
      9 
     10 namespace net {
     11 
     12 namespace {
     13 
     14 // Converts a Java side connection type (integer) to
     15 // the native side NetworkChangeNotifier::ConnectionType.
     16 NetworkChangeNotifier::ConnectionType ConvertConnectionType(
     17     jint connection_type) {
     18   switch (connection_type) {
     19     case NetworkChangeNotifier::CONNECTION_UNKNOWN:
     20     case NetworkChangeNotifier::CONNECTION_ETHERNET:
     21     case NetworkChangeNotifier::CONNECTION_WIFI:
     22     case NetworkChangeNotifier::CONNECTION_2G:
     23     case NetworkChangeNotifier::CONNECTION_3G:
     24     case NetworkChangeNotifier::CONNECTION_4G:
     25     case NetworkChangeNotifier::CONNECTION_NONE:
     26     case NetworkChangeNotifier::CONNECTION_BLUETOOTH:
     27       break;
     28     default:
     29       NOTREACHED() << "Unknown connection type received: " << connection_type;
     30       return NetworkChangeNotifier::CONNECTION_UNKNOWN;
     31   }
     32   return static_cast<NetworkChangeNotifier::ConnectionType>(connection_type);
     33 }
     34 
     35 }  // namespace
     36 
     37 NetworkChangeNotifierDelegateAndroid::NetworkChangeNotifierDelegateAndroid()
     38     : observers_(new ObserverListThreadSafe<Observer>()) {
     39   JNIEnv* env = base::android::AttachCurrentThread();
     40   java_network_change_notifier_.Reset(
     41       Java_NetworkChangeNotifier_init(
     42           env, base::android::GetApplicationContext()));
     43   Java_NetworkChangeNotifier_addNativeObserver(
     44       env, java_network_change_notifier_.obj(),
     45       reinterpret_cast<intptr_t>(this));
     46   SetCurrentConnectionType(
     47       ConvertConnectionType(
     48           Java_NetworkChangeNotifier_getCurrentConnectionType(
     49               env, java_network_change_notifier_.obj())));
     50 }
     51 
     52 NetworkChangeNotifierDelegateAndroid::~NetworkChangeNotifierDelegateAndroid() {
     53   DCHECK(thread_checker_.CalledOnValidThread());
     54   observers_->AssertEmpty();
     55   JNIEnv* env = base::android::AttachCurrentThread();
     56   Java_NetworkChangeNotifier_removeNativeObserver(
     57       env, java_network_change_notifier_.obj(),
     58       reinterpret_cast<intptr_t>(this));
     59 }
     60 
     61 NetworkChangeNotifier::ConnectionType
     62 NetworkChangeNotifierDelegateAndroid::GetCurrentConnectionType() const {
     63   base::AutoLock auto_lock(connection_type_lock_);
     64   return connection_type_;
     65 }
     66 
     67 void NetworkChangeNotifierDelegateAndroid::NotifyConnectionTypeChanged(
     68     JNIEnv* env,
     69     jobject obj,
     70     jint new_connection_type) {
     71   DCHECK(thread_checker_.CalledOnValidThread());
     72   const ConnectionType actual_connection_type = ConvertConnectionType(
     73       new_connection_type);
     74   SetCurrentConnectionType(actual_connection_type);
     75   observers_->Notify(&Observer::OnConnectionTypeChanged);
     76 }
     77 
     78 jint NetworkChangeNotifierDelegateAndroid::GetConnectionType(JNIEnv*,
     79                                                              jobject) const {
     80   DCHECK(thread_checker_.CalledOnValidThread());
     81   return GetCurrentConnectionType();
     82 }
     83 
     84 void NetworkChangeNotifierDelegateAndroid::AddObserver(
     85     Observer* observer) {
     86   observers_->AddObserver(observer);
     87 }
     88 
     89 void NetworkChangeNotifierDelegateAndroid::RemoveObserver(
     90     Observer* observer) {
     91   observers_->RemoveObserver(observer);
     92 }
     93 
     94 // static
     95 bool NetworkChangeNotifierDelegateAndroid::Register(JNIEnv* env) {
     96   return RegisterNativesImpl(env);
     97 }
     98 
     99 void NetworkChangeNotifierDelegateAndroid::SetCurrentConnectionType(
    100     ConnectionType new_connection_type) {
    101   base::AutoLock auto_lock(connection_type_lock_);
    102   connection_type_ = new_connection_type;
    103 }
    104 
    105 void NetworkChangeNotifierDelegateAndroid::SetOnline() {
    106   JNIEnv* env = base::android::AttachCurrentThread();
    107   Java_NetworkChangeNotifier_forceConnectivityState(env, true);
    108 }
    109 
    110 void NetworkChangeNotifierDelegateAndroid::SetOffline() {
    111   JNIEnv* env = base::android::AttachCurrentThread();
    112   Java_NetworkChangeNotifier_forceConnectivityState(env, false);
    113 }
    114 
    115 }  // namespace net
    116