mojo VR interface simplified

device/vr/vr_device.h

 // 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.
 
 #ifndef DEVICE_VR_VR_DEVICE_H
 #define DEVICE_VR_VR_DEVICE_H
 
 #include "base/macros.h"
 #include "device/vr/vr_export.h"
 #include "device/vr/vr_service.mojom.h"
 
 namespace blink {
 struct WebHMDSensorState;
 }
 
 namespace ui {
 class BaseWindow;
 }
 
 namespace device {
 
+class VRServiceImpl;
 class VRDeviceProvider;
 
 const unsigned int VR_DEVICE_LAST_ID = 0xFFFFFFFF;
 
 class DEVICE_VR_EXPORT VRDevice {
  public:
   explicit VRDevice(VRDeviceProvider* provider);
   virtual ~VRDevice();
 
   VRDeviceProvider* provider() const { return provider_; }
   unsigned int id() const { return id_; }
 
   virtual VRDisplayPtr GetVRDevice() = 0;
-  virtual VRPosePtr GetPose() = 0;
-  virtual void ResetPose() = 0;
+  virtual VRPosePtr GetPose(VRServiceImpl* service) = 0;
+  virtual void ResetPose(VRServiceImpl* service) = 0;
 
-  virtual bool RequestPresent(bool secure_origin);
-  virtual void ExitPresent(){};
-  virtual void SubmitFrame(VRPosePtr pose){};
-  virtual void UpdateLayerBounds(VRLayerBoundsPtr leftBounds,
-                                 VRLayerBoundsPtr rightBounds){};
+  virtual bool RequestPresent(VRServiceImpl* service, bool secure_origin) = 0;
+  virtual void ExitPresent(VRServiceImpl* service) = 0;
+  virtual void SubmitFrame(VRServiceImpl* service, VRPosePtr pose) = 0;
+  virtual void UpdateLayerBounds(VRServiceImpl* service,
+                                 VRLayerBoundsPtr leftBounds,
+                                 VRLayerBoundsPtr rightBounds) = 0;
+
+  virtual void RegisterDisplayService(VRServiceImpl* service,
+                                      VRDisplayServicePtr display_service);
+  virtual void RemoveService(VRServiceImpl* service);
+  virtual bool CheckAccessAllowed(VRServiceImpl* service);
+  virtual bool IsPresentingService(VRServiceImpl* service);
+
+  virtual void OnDisplayChanged() = 0;
+  virtual void OnExitPresent(VRServiceImpl* service) = 0;
+  virtual void OnDisplayConnected() = 0;
+  virtual void OnDisplayDisconnected() = 0;
+
+ protected:
+  using DisplayServiceMap = std::map<VRServiceImpl*, VRDisplayServicePtr>;
+  DisplayServiceMap display_services_;
+
+  VRServiceImpl* presenting_service_;
 
  private:
   VRDeviceProvider* provider_;
   unsigned int id_;
 
   static unsigned int next_id_;
 
   DISALLOW_COPY_AND_ASSIGN(VRDevice);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_VR_VR_DEVICE_H