[Presentation API] (alternative) 1-UA: send message between controller and receiver page

chrome/browser/media/router/presentation_service_delegate_impl.cc

 // Copyright 2015 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/media/router/presentation_service_delegate_impl.h"
 
 #include <string>
 #include <unordered_map>
 #include <utility>
 #include <vector>
 
 #include "base/containers/small_map.h"
 #include "base/guid.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/media/router/create_presentation_connection_request.h"
 #include "chrome/browser/media/router/media_route.h"
 #include "chrome/browser/media/router/media_router.h"
 #include "chrome/browser/media/router/media_router_dialog_controller.h"
 #include "chrome/browser/media/router/media_router_factory.h"
 #include "chrome/browser/media/router/media_sink.h"
 #include "chrome/browser/media/router/media_source_helper.h"
+#include "chrome/browser/media/router/offscreen_presentation_manager.h"
+#include "chrome/browser/media/router/offscreen_presentation_manager_factory.h"
 #include "chrome/browser/media/router/presentation_media_sinks_observer.h"
 #include "chrome/browser/media/router/route_message.h"
 #include "chrome/browser/media/router/route_message_observer.h"
 #include "chrome/browser/media/router/route_request_result.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/presentation_screen_availability_listener.h"
 #include "content/public/browser/presentation_session.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
+#include "url/gurl.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(
     media_router::PresentationServiceDelegateImpl);
 
 using content::RenderFrameHost;
 
 namespace media_router {
 
 namespace {
 
@@ skipping 615 matching lines @@
   PresentationServiceDelegateImpl::CreateForWebContents(web_contents);
   return PresentationServiceDelegateImpl::FromWebContents(web_contents);
 }
 
 PresentationServiceDelegateImpl::PresentationServiceDelegateImpl(
     content::WebContents* web_contents)
     : web_contents_(web_contents),
       router_(MediaRouterFactory::GetApiForBrowserContext(
           web_contents_->GetBrowserContext())),
       frame_manager_(new PresentationFrameManager(web_contents, router_)),
+      offscreen_presentation_manager_(
+          OffscreenPresentationManagerFactory::GetOrCreateForBrowserContext(

[mark a. foltz, 2016/10/08 00:33:41]

Maybe there could be a OffscreenPresentationManagerFactory method that takes a
WebContents, if this is a common use.

[zhaobin, 2016/10/12 02:27:33]

Done.

+              web_contents_->GetBrowserContext())),
       weak_factory_(this) {
   DCHECK(web_contents_);
   DCHECK(router_);
 }
 
 PresentationServiceDelegateImpl::~PresentationServiceDelegateImpl() {
 }
 
 void PresentationServiceDelegateImpl::AddObserver(int render_process_id,
                                                   int render_frame_id,
@@ skipping 228 matching lines @@
     int render_process_id,
     int render_frame_id,
     const content::PresentationSessionInfo& connection,
     const content::PresentationConnectionStateChangedCallback&
         state_changed_cb) {
   frame_manager_->ListenForConnectionStateChange(
       RenderFrameHostId(render_process_id, render_frame_id), connection,
       state_changed_cb);
 }
 
+void PresentationServiceDelegateImpl::RegisterReceiverAvailableCallback(
+    const content::ReceiverConnectionAvailableCallback&
+        receiver_available_callback) {}

[mark a. foltz, 2016/10/08 00:33:41]

This is not implemented for the controller's PSImpl because only the receiver's
presentation service needs this callback, correct?

I wonder if we should have PresentationServiceDelegateImplBase,
ControllerPresentationServiceDelegateImpl, and
ReceiverPresentationServiceDelegateImpl, since they have different APIs?

[zhaobin, 2016/10/12 02:27:33]

Done.

+
+void PresentationServiceDelegateImpl::RegisterOffscreenPresentationConnection(
+    int render_process_id,
+    int render_frame_id,
+    const content::PresentationSessionInfo& session,
+    content::PresentationConnectionPtr connection) {
+  RenderFrameHostId render_frame_host_id(render_process_id, render_frame_id);
+  offscreen_presentation_manager_->RegisterOffscreenPresentationController(
+      session.presentation_id, GURL(session.presentation_url),
+      render_frame_host_id, std::move(connection));
+}
+
 void PresentationServiceDelegateImpl::OnRouteResponse(
     const PresentationRequest& presentation_request,
     const RouteRequestResult& result) {
   if (!result.route())
     return;
 
   content::PresentationSessionInfo session_info(
       presentation_request.presentation_url(), result.presentation_id());
   frame_manager_->OnDefaultPresentationSessionStarted(
       presentation_request, session_info, result.route()->media_route_id());
@@ skipping 33 matching lines @@
 bool PresentationServiceDelegateImpl::HasScreenAvailabilityListenerForTest(
     int render_process_id,
     int render_frame_id,
     const MediaSource::Id& source_id) const {
   RenderFrameHostId render_frame_host_id(render_process_id, render_frame_id);
   return frame_manager_->HasScreenAvailabilityListenerForTest(
       render_frame_host_id, source_id);
 }
 
 }  // namespace media_router