content/browser/vibration/vibration_provider_android.cc

   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