Hook up HTML5 fullscreen video notifications to tabCapture API

chrome/browser/extensions/api/tab_capture/tab_capture_registry.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/extensions/api/tab_capture/tab_capture_registry.h"
 
 #include <utility>
 
 #include "chrome/browser/extensions/event_names.h"
 #include "chrome/browser/extensions/event_router.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/extension.h"
 #include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 
 using content::BrowserThread;
 using extensions::TabCaptureRegistry;
 using extensions::tab_capture::TabCaptureState;
 
 namespace extensions {
@@ skipping 74 matching lines @@
 
 TabCaptureRequest::~TabCaptureRequest() {
 }
 
 TabCaptureRegistry::TabCaptureRegistry(Profile* profile)
     : profile_(profile) {
   MediaCaptureDevicesDispatcher::GetInstance()->AddObserver(this);
   registrar_.Add(this,
                  chrome::NOTIFICATION_EXTENSION_UNLOADED,
                  content::Source<Profile>(profile_));
-  // TODO(justinlin): Hook up HTML5 fullscreen.
+  registrar_.Add(this,
+                 chrome::NOTIFICATION_FULLSCREEN_CHANGED,
+                 content::NotificationService::AllSources());
 }
 
 TabCaptureRegistry::~TabCaptureRegistry() {
   MediaCaptureDevicesDispatcher::GetInstance()->RemoveObserver(this);
 }
 
 const TabCaptureRegistry::RegistryCaptureInfo
     TabCaptureRegistry::GetCapturedTabs(const std::string& extension_id) const {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   RegistryCaptureInfo list;
   for (ScopedVector<TabCaptureRequest>::const_iterator it = requests_.begin();
        it != requests_.end(); ++it) {
     if ((*it)->extension_id == extension_id) {
       list.push_back(std::make_pair((*it)->tab_id, (*it)->status));
     }
   }
   return list;
 }
 
 void TabCaptureRegistry::Observe(int type,
                                  const content::NotificationSource& source,
                                  const content::NotificationDetails& details) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   switch (type) {
     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
       // Cleanup all the requested media streams for this extension.
       const std::string& extension_id =
           content::Details<extensions::UnloadedExtensionInfo>(details)->
               extension->id();
       for (ScopedVector<TabCaptureRequest>::iterator it = requests_.begin();
            it != requests_.end();) {
         if ((*it)->extension_id == extension_id) {
           it = requests_.erase(it);
         } else {
           ++it;
         }
       }
       break;
     }
     case chrome::NOTIFICATION_FULLSCREEN_CHANGED: {
-      // TODO(justinlin): Hook up HTML5 fullscreen.
+      FullscreenController* fullscreen_controller =
+          content::Source<FullscreenController>(source).ptr();
+      const bool is_fullscreen = *content::Details<bool>(details).ptr();
+      for (ScopedVector<TabCaptureRequest>::iterator it = requests_.begin();
+           it != requests_.end(); ++it) {
+        // If we are exiting fullscreen mode, we only need to check if any of
+        // the requests had the fullscreen flag toggled previously. The
+        // fullscreen controller no longer has the reference to the fullscreen
+        // web_contents here.
+        if (!is_fullscreen) {
+          if ((*it)->fullscreen) {
+            (*it)->fullscreen = false;
+            DispatchStatusChangeEvent(*it);
+            break;
+          }
+          continue;
+        }
+
+        // If we are entering fullscreen mode, find whether the web_contents we
+        // are capturing entered fullscreen mode.
+        content::RenderViewHost* const rvh =
+            content::RenderViewHost::FromID((*it)->render_process_id,
+                                            (*it)->render_view_id);
+        if (rvh && fullscreen_controller->IsFullscreenForTabOrPending(
+                content::WebContents::FromRenderViewHost(rvh))) {
+          (*it)->fullscreen = true;
+          DispatchStatusChangeEvent(*it);
+          break;
+        }
+      }
       break;
     }
   }
 }
 
 bool TabCaptureRegistry::AddRequest(int render_process_id,
                                     int render_view_id,
                                     const std::string& extension_id,
                                     int tab_id,
                                     TabCaptureState status) {
@@ skipping 142 matching lines @@
        it != requests_.end(); ++it) {
     if ((*it)->render_process_id == render_process_id &&
         (*it)->render_view_id == render_view_id) {
       requests_.erase(it);
       return;
     }
   }
 }
 
 }  // namespace extensions