src/content/browser/screen_orientation/screen_orientation_provider_android.cc

   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 #include "content/browser/screen_orientation/screen_orientation_provider_android.h"
   6
   7 #include "content/browser/screen_orientation/screen_orientation_dispatcher_host.h"
   8 #include "jni/ScreenOrientationProvider_jni.h"
   9
  10 namespace content {
  11
  12 ScreenOrientationProviderAndroid::ScreenOrientationProviderAndroid() {
  13 }
  14
  15 ScreenOrientationProviderAndroid::~ScreenOrientationProviderAndroid() {
  16 }
  17
  18 // static
  19 bool ScreenOrientationProviderAndroid::Register(JNIEnv* env) {
  20   return RegisterNativesImpl(env);
  21 }
  22
  23 void ScreenOrientationProviderAndroid::LockOrientation(
  24     blink::WebScreenOrientationLockType orientation) {
  25   if (j_screen_orientation_provider_.is_null()) {
  26     j_screen_orientation_provider_.Reset(Java_ScreenOrientationProvider_create(
  27         base::android::AttachCurrentThread()));
  28   }
  29
  30   Java_ScreenOrientationProvider_lockOrientation(
  31       base::android::AttachCurrentThread(),
  32       j_screen_orientation_provider_.obj(), orientation);
  33 }
  34
  35 void ScreenOrientationProviderAndroid::UnlockOrientation() {
  36   // j_screen_orientation_provider_ is set when locking. If the screen
  37   // orientation was not locked, unlocking should be a no-op.
  38   if (j_screen_orientation_provider_.is_null())
  39     return;
  40
  41   Java_ScreenOrientationProvider_unlockOrientation(
  42       base::android::AttachCurrentThread(),
  43       j_screen_orientation_provider_.obj());
  44 }
  45
  46 // static
  47 ScreenOrientationProvider* ScreenOrientationDispatcherHost::CreateProvider() {
  48   return new ScreenOrientationProviderAndroid();
  49 }
  50
  51 } // namespace content