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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 #include "config.h"
     27 #include "DeviceOrientationClientProxy.h"
     28 
     29 #include "WebDeviceOrientation.h"
     30 #include "WebDeviceOrientationController.h"
     31 #include "wtf/OwnPtr.h"
     32 #include "wtf/PassRefPtr.h"
     33 #include "wtf/RefPtr.h"
     34 
     35 namespace WebCore {
     36 class DeviceOrientationController;
     37 }
     38 
     39 namespace WebKit {
     40 
     41 void DeviceOrientationClientProxy::setController(WebCore::DeviceOrientationController* c)
     42 {
     43     if (!m_client) // FIXME: Get rid of these null checks once device orientation is enabled by default.
     44         return;
     45     m_client->setController(new WebDeviceOrientationController(c));
     46 }
     47 
     48 void DeviceOrientationClientProxy::startUpdating()
     49 {
     50     if (!m_client)
     51         return;
     52     m_client->startUpdating();
     53 }
     54 
     55 void DeviceOrientationClientProxy::stopUpdating()
     56 {
     57     if (!m_client)
     58         return;
     59     m_client->stopUpdating();
     60 }
     61 
     62 WebCore::DeviceOrientationData* DeviceOrientationClientProxy::lastOrientation() const
     63 {
     64     if (!m_client)
     65         return 0;
     66 
     67     // Cache the DeviceOrientationData pointer so its reference count does not drop to zero upon return.
     68     m_lastOrientation = m_client->lastOrientation();
     69 
     70     return m_lastOrientation.get();
     71 }
     72 
     73 void DeviceOrientationClientProxy::deviceOrientationControllerDestroyed()
     74 {
     75     // Our lifetime is bound to the WebViewImpl.
     76 }
     77 
     78 } // namespace WebKit
     79