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| 1 // Copyright 2016 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 "chrome/browser/android/vr_shell/vr_shell_delegate.h" |
| 6 |
| 7 #include <jni.h> |
| 8 |
| 9 #include "base/android/jni_android.h" |
| 10 #include "chrome/browser/android/vr_shell/vr_shell.h" |
| 11 #include "jni/VrShellDelegate_jni.h" |
| 12 |
| 13 using base::android::JavaParamRef; |
| 14 using base::android::AttachCurrentThread; |
| 15 |
| 16 namespace vr_shell { |
| 17 |
| 18 VrShellDelegate::VrShellDelegate(JNIEnv* env, jobject obj) |
| 19 : device_provider_(nullptr) { |
| 20 j_vr_shell_delegate_.Reset(env, obj); |
| 21 GvrDelegateProvider::SetInstance(this); |
| 22 } |
| 23 |
| 24 VrShellDelegate::~VrShellDelegate() { |
| 25 GvrDelegateProvider::SetInstance(nullptr); |
| 26 } |
| 27 |
| 28 // Returns true if the GvrDeviceProvider needs to handle shutdown first. |
| 29 bool VrShellDelegate::ExitVRIfNecessary(JNIEnv* env, jobject obj) { |
| 30 if (!device_provider_) |
| 31 return false; |
| 32 |
| 33 device_provider_->OnGvrDelegateRemoved(); |
| 34 return true; |
| 35 } |
| 36 |
| 37 bool VrShellDelegate::RequestWebVRPresent( |
| 38 device::GvrDeviceProvider* device_provider) { |
| 39 // Only set one device provider at a time |
| 40 DCHECK(!device_provider_); |
| 41 device_provider_ = device_provider; |
| 42 |
| 43 // If/When VRShell is ready for use it will call OnVrShellReady. |
| 44 JNIEnv* env = AttachCurrentThread(); |
| 45 return Java_VrShellDelegate_enterWebVRIfNecessary(env, |
| 46 j_vr_shell_delegate_.obj()); |
| 47 } |
| 48 |
| 49 void VrShellDelegate::ExitWebVRPresent() { |
| 50 if (!device_provider_) |
| 51 return; |
| 52 |
| 53 device_provider_ = nullptr; |
| 54 |
| 55 // VRShell is no longer needed by WebVR, allow it to shut down if it's not |
| 56 // being used elsewhere. |
| 57 JNIEnv* env = AttachCurrentThread(); |
| 58 Java_VrShellDelegate_exitWebVRIfNecessary(env, j_vr_shell_delegate_.obj()); |
| 59 } |
| 60 |
| 61 void VrShellDelegate::OnVrShellReady(VrShell* vr_shell) { |
| 62 if (device_provider_) |
| 63 device_provider_->OnGvrDelegateReady(vr_shell); |
| 64 } |
| 65 |
| 66 // ---------------------------------------------------------------------------- |
| 67 // Native JNI methods |
| 68 // ---------------------------------------------------------------------------- |
| 69 |
| 70 bool RegisterVrShellDelegate(JNIEnv* env) { |
| 71 return RegisterNativesImpl(env); |
| 72 } |
| 73 |
| 74 jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) { |
| 75 return reinterpret_cast<intptr_t>(new VrShellDelegate(env, obj)); |
| 76 } |
| 77 |
| 78 } // namespace vr_shell |
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