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      1 // Copyright 2013 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 "content/browser/vibration/vibration_provider_android.h"
      6 
      7 #include <algorithm>
      8 
      9 #include "content/browser/vibration/vibration_message_filter.h"
     10 #include "content/common/view_messages.h"
     11 #include "jni/VibrationProvider_jni.h"
     12 #include "third_party/WebKit/public/platform/WebVibration.h"
     13 
     14 using base::android::AttachCurrentThread;
     15 
     16 namespace content {
     17 
     18 VibrationProviderAndroid::VibrationProviderAndroid() {
     19 }
     20 
     21 VibrationProviderAndroid::~VibrationProviderAndroid() {
     22 }
     23 
     24 // static
     25 bool VibrationProviderAndroid::Register(JNIEnv* env) {
     26   return RegisterNativesImpl(env);
     27 }
     28 
     29 void VibrationProviderAndroid::Vibrate(int64 milliseconds) {
     30   if (j_vibration_provider_.is_null()) {
     31     j_vibration_provider_.Reset(
     32         Java_VibrationProvider_create(
     33             AttachCurrentThread(),
     34             base::android::GetApplicationContext()));
     35   }
     36   Java_VibrationProvider_vibrate(AttachCurrentThread(),
     37                                 j_vibration_provider_.obj(),
     38                                 milliseconds);
     39 }
     40 
     41 void VibrationProviderAndroid::CancelVibration() {
     42   // If somehow a cancel message is received before this object was
     43   // instantiated, it means there is no current vibration anyway. Just return.
     44   if (j_vibration_provider_.is_null())
     45     return;
     46 
     47   Java_VibrationProvider_cancelVibration(AttachCurrentThread(),
     48                                         j_vibration_provider_.obj());
     49 }
     50 
     51 // static
     52 VibrationProvider* VibrationMessageFilter::CreateProvider() {
     53   return new VibrationProviderAndroid();
     54 }
     55 
     56 }  // namespace content
     57