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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef DeviceOrientationClientProxy_h
     27 #define DeviceOrientationClientProxy_h
     28 
     29 #include "DeviceOrientation.h"
     30 #include "DeviceOrientationClient.h"
     31 #include "WebDeviceOrientationClient.h"
     32 #include <wtf/RefPtr.h>
     33 
     34 namespace WebCore {
     35 class DeviceOrientationController;
     36 }
     37 
     38 namespace WebKit {
     39 
     40 class DeviceOrientationClientProxy : public WebCore::DeviceOrientationClient {
     41 public:
     42     DeviceOrientationClientProxy(WebDeviceOrientationClient* client)
     43         : m_client(client)
     44     {
     45     }
     46 
     47     void setController(WebCore::DeviceOrientationController*);
     48     void startUpdating();
     49     void stopUpdating();
     50     WebCore::DeviceOrientation* lastOrientation() const;
     51     virtual void deviceOrientationControllerDestroyed();
     52 
     53 private:
     54     WebDeviceOrientationClient* m_client;
     55     mutable RefPtr<WebCore::DeviceOrientation> m_lastOrientation;
     56 };
     57 
     58 } // namespace WebKit
     59 
     60 #endif // DeviceOrientationClientProxy_h
     61