[OnionSoup] Moving VR service from content to Blink

third_party/WebKit/Source/platform/vr/vr_dispatcher.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "platform/vr/vr_dispatcher.h"
+
+#include "platform/threading/BindForMojo.h"
+#include "platform/vr/vr_type_converters.h"
+#include "public/platform/Platform.h"
+
+namespace blink {
+
+VRGetDevicesRequest::VRGetDevicesRequest(WebVRGetDevicesCallback* callback)
+    : get_devices_callback_(callback) {
+}
+
+VRGetDevicesRequest::~VRGetDevicesRequest() {
+  get_devices_callback_ = nullptr;
+}
+
+WebVRGetDevicesCallback*
+    VRGetDevicesRequest::get_devices_callback() const {
+  return get_devices_callback_;
+}
+
+// static
+WebVRClient* VRDispatcher::create()
+{
+    return new VRDispatcher();
+}
+
+VRDispatcher::VRDispatcher() {
+}
+
+VRDispatcher::~VRDispatcher() {
+}
+
+mojom::VRServicePtr& VRDispatcher::GetVRServicePtr() {
+  if (!vr_service_)
+    Platform::current()->connectToRemoteService(mojo::GetProxy(&vr_service_));
+  return vr_service_;
+}
+
+void VRDispatcher::getDevices(WebVRGetDevicesCallback* callback) {
+  VRGetDevicesRequest* device_request = new VRGetDevicesRequest(callback);
+  GetVRServicePtr()->GetDevices(
+      sameThreadBindForMojoWithBoundArgs(&VRDispatcher::OnGetDevices,
+                                         this, device_request));
+}
+
+void VRDispatcher::getSensorState(unsigned int index,
+                                  WebHMDSensorState& state) {
+  GetVRServicePtr()->GetSensorState(
+      index,
+      sameThreadBindForMojoWithBoundArgs(&VRDispatcher::OnGetSensorState,
+                                         this, &state));
+
+  // This call needs to return results synchronously in order to be useful and
+  // provide the lowest latency results possible.
+  GetVRServicePtr().WaitForIncomingResponse();
+}
+
+void VRDispatcher::resetSensor(unsigned int index) {
+  GetVRServicePtr()->ResetSensor(index);
+}
+
+void VRDispatcher::OnGetDevices(VRGetDevicesRequest* device_request,
+                                const mojo::Array<mojom::VRDeviceInfoPtr>& devices) {
+  WebVector<WebVRDevice> web_devices(devices.size());
+
+  WebVRGetDevicesCallback* callback = device_request->get_devices_callback();
+  if (!callback)
+    return;
+
+  for (size_t i = 0; i < devices.size(); ++i) {
+    web_devices[i] = devices[i].To<WebVRDevice>();
+  }
+
+  callback->onSuccess(web_devices);
+  delete device_request;

[haraken, 2016/03/22 02:39:20]

We really want to avoid calling manual delete. Can we make VRDispatcher hold
HashSet<OwnPtr<VRGetDevicesRequest>> so that we don't need to call delete
manually?

[RaviKasibhatla, 2016/03/23 15:20:50]

Done.

+}
+
+void VRDispatcher::OnGetSensorState(WebHMDSensorState* state,
+                                    const mojom::VRSensorStatePtr& mojo_state) {
+  *state = mojo_state.To<WebHMDSensorState>();
+}
+
+}  // namespace blink