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      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 #ifndef NET_PROXY_PROXY_CONFIG_SERVICE_ANDROID_H_
      6 #define NET_PROXY_PROXY_CONFIG_SERVICE_ANDROID_H_
      7 
      8 #include <string>
      9 
     10 #include "base/android/jni_android.h"
     11 #include "base/basictypes.h"
     12 #include "base/callback_forward.h"
     13 #include "base/compiler_specific.h"
     14 #include "base/memory/ref_counted.h"
     15 #include "net/base/net_export.h"
     16 #include "net/proxy/proxy_config_service.h"
     17 
     18 namespace base {
     19 class SequencedTaskRunner;
     20 }
     21 
     22 namespace net {
     23 
     24 class ProxyConfig;
     25 
     26 class NET_EXPORT ProxyConfigServiceAndroid : public ProxyConfigService {
     27  public:
     28   // Callback that returns the value of the property identified by the provided
     29   // key. If it was not found, an empty string is returned. Note that this
     30   // interface does not let you distinguish an empty property from a
     31   // non-existing property. This callback is invoked on the JNI thread.
     32   typedef base::Callback<std::string (const std::string& property)>
     33       GetPropertyCallback;
     34 
     35   // Separate class whose instance is owned by the Delegate class implemented in
     36   // the .cc file.
     37   class JNIDelegate {
     38    public:
     39     virtual ~JNIDelegate() {}
     40 
     41     // Called from Java (on JNI thread) to signal that the proxy settings have
     42     // changed. The string and int arguments (the host/port pair for the proxy)
     43     // are either a host/port pair or ("", 0) to indicate "no proxy".
     44     virtual void ProxySettingsChangedTo(JNIEnv*, jobject, jstring, jint) = 0;
     45 
     46     // Called from Java (on JNI thread) to signal that the proxy settings have
     47     // changed. New proxy settings are fetched from the system property store.
     48     virtual void ProxySettingsChanged(JNIEnv*, jobject) = 0;
     49   };
     50 
     51   ProxyConfigServiceAndroid(base::SequencedTaskRunner* network_task_runner,
     52                             base::SequencedTaskRunner* jni_task_runner);
     53 
     54   virtual ~ProxyConfigServiceAndroid();
     55 
     56   // Register JNI bindings.
     57   static bool Register(JNIEnv* env);
     58 
     59   // ProxyConfigService:
     60   // Called only on the network thread.
     61   virtual void AddObserver(Observer* observer) OVERRIDE;
     62   virtual void RemoveObserver(Observer* observer) OVERRIDE;
     63   virtual ConfigAvailability GetLatestProxyConfig(ProxyConfig* config) OVERRIDE;
     64 
     65  private:
     66   friend class ProxyConfigServiceAndroidTestBase;
     67   class Delegate;
     68 
     69   // For tests.
     70   ProxyConfigServiceAndroid(base::SequencedTaskRunner* network_task_runner,
     71                             base::SequencedTaskRunner* jni_task_runner,
     72                             GetPropertyCallback get_property_callback);
     73 
     74   // For tests.
     75   void ProxySettingsChanged();
     76 
     77   scoped_refptr<Delegate> delegate_;
     78 
     79   DISALLOW_COPY_AND_ASSIGN(ProxyConfigServiceAndroid);
     80 };
     81 
     82 } // namespace net
     83 
     84 #endif // NET_PROXY_PROXY_CONFIG_SERVICE_ANDROID_H_
     85