Screen Orientation API: screen.orientation & orientationchange event

Source/web/FrameLoaderClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 58 matching lines @@
 #include "core/loader/ProgressTracker.h"
 #include "core/page/Chrome.h"
 #include "core/page/EventHandler.h"
 #include "core/frame/FrameView.h"
 #include "core/page/Page.h"
 #include "core/frame/Settings.h"
 #include "core/page/WindowFeatures.h"
 #include "core/rendering/HitTestResult.h"
 #include "modules/device_orientation/DeviceMotionController.h"
 #include "modules/device_orientation/DeviceOrientationController.h"
+#include "modules/screen_orientation/ScreenOrientationController.h"
 #include "platform/MIMETypeRegistry.h"
 #include "platform/UserGestureIndicator.h"
 #include "platform/exported/WrappedResourceRequest.h"
 #include "platform/exported/WrappedResourceResponse.h"
 #include "platform/network/HTTPParsers.h"
 #include "platform/network/SocketStreamHandleInternal.h"
 #include "platform/plugins/PluginData.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebMimeRegistry.h"
 #include "public/platform/WebRTCPeerConnectionHandler.h"
@@ skipping 25 matching lines @@
 {
     if (m_webFrame->client()) {
         m_webFrame->client()->didClearWindowObject(m_webFrame, world->worldId());
         Document* document = m_webFrame->frame()->document();
         if (document) {
             WheelController::from(document);
             if (RuntimeEnabledFeatures::deviceMotionEnabled())
                 DeviceMotionController::from(document);
             if (RuntimeEnabledFeatures::deviceOrientationEnabled())
                 DeviceOrientationController::from(document);
+            if (RuntimeEnabledFeatures::screenOrientationEnabled())
+                ScreenOrientationController::from(document);

[abarth-chromium, 2014/02/19 18:51:49]

Is this necessary?  This means we'll always boot up the
ScreenOrientationController...  I guess that's necessary because
ScreenOrientation is a supplement and we don't necessarily boot up
ScreenOrientation when someone starts listening to screen orientation events... 
:(

[Inactive, 2014/02/19 19:04:51]

Yes, I need to make sure we construct the ScreenOrientationController at some
point. Optimally, we would construct it only when someone starts listening for
orientationchange events on screen but I am not sure that's currently possible
(at least I don't know how).

         }
     }
 }
 
 void FrameLoaderClientImpl::documentElementAvailable()
 {
     if (m_webFrame->client())
         m_webFrame->client()->didCreateDocumentElement(m_webFrame);
 }
 
@@ skipping 647 matching lines @@
     return m_webFrame->sharedWorkerRepositoryClient();
 }
 
 void FrameLoaderClientImpl::didStopAllLoaders()
 {
     if (m_webFrame->client())
         m_webFrame->client()->didAbortLoading(m_webFrame);
 }
 
 } // namespace blink