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      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
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_BROWSER_TIME_ZONE_MONITOR_ANDROID_H_
      6 #define CONTENT_BROWSER_TIME_ZONE_MONITOR_ANDROID_H_
      7 
      8 #include "content/browser/time_zone_monitor.h"
      9 
     10 #include <jni.h>
     11 
     12 #include "base/android/scoped_java_ref.h"
     13 #include "base/basictypes.h"
     14 
     15 namespace content {
     16 
     17 class TimeZoneMonitorAndroid : public TimeZoneMonitor {
     18  public:
     19   TimeZoneMonitorAndroid();
     20   virtual ~TimeZoneMonitorAndroid();
     21 
     22   // Must be called at startup.
     23   static bool Register(JNIEnv* env);
     24 
     25   // Called by the Java implementation when the system time zone changes.
     26   void TimeZoneChangedFromJava(JNIEnv* env, jobject caller);
     27 
     28  private:
     29   // Java provider of system time zone change notifications.
     30   base::android::ScopedJavaGlobalRef<jobject> impl_;
     31 
     32   DISALLOW_COPY_AND_ASSIGN(TimeZoneMonitorAndroid);
     33 };
     34 
     35 }  // namespace content
     36 
     37 #endif  // CONTENT_BROWSER_TIME_ZONE_MONITOR_ANDROID_H_
     38