Chromium plumbing for Device Orientation.

chrome/renderer/device_orientation_dispatcher.h

+// Copyright (c) 2010 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 CHROME_RENDERER_DEVICE_ORIENTATION_DISPATCHER_H_
+#define CHROME_RENDERER_DEVICE_ORIENTATION_DISPATCHER_H_
+
+#include "third_party/WebKit/WebKit/chromium/public/WebDeviceOrientationClient.h"
+
+#include "chrome/common/render_messages.h"
+
+class RenderView;
+namespace IPC { class Message; }
+
+class DeviceOrientationDispatcher : public WebKit::WebDeviceOrientationClient {
+ public:
+  explicit DeviceOrientationDispatcher(RenderView* render_view);
+  virtual ~DeviceOrientationDispatcher();
+
+  bool OnMessageReceived(const IPC::Message& msg);
+
+  // From WebKit::WebDeviceOrientationClient.
+  virtual void setController(
+      WebKit::WebDeviceOrientationController* controller);
+  virtual void startUpdating();
+  virtual void stopUpdating();
+  virtual WebKit::WebDeviceOrientation lastOrientation() const;
+
+ private:
+  void OnDeviceOrientationUpdated(
+      const ViewMsg_DeviceOrientationUpdated_Params& p);
+
+  RenderView* render_view_;
+  scoped_ptr<WebKit::WebDeviceOrientationController> controller_;
+  scoped_ptr<ViewMsg_DeviceOrientationUpdated_Params> last_update_;
+  bool started_;
+};
+
+#endif  // CHROME_RENDERER_DEVICE_ORIENTATION_DISPATCHER_H_