(Not for review) Dummy C++ side Custom Controls implementation

chrome/browser/ui/webui/media_router/media_router_ui.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/ui/webui/media_router/media_router_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <unordered_map>
 #include <utility>
@@ skipping 11 matching lines @@
 #include "chrome/browser/media/router/issues_observer.h"
 #include "chrome/browser/media/router/media_route.h"
 #include "chrome/browser/media/router/media_router.h"
 #include "chrome/browser/media/router/media_router_factory.h"
 #include "chrome/browser/media/router/media_router_metrics.h"
 #include "chrome/browser/media/router/media_routes_observer.h"
 #include "chrome/browser/media/router/media_sink.h"
 #include "chrome/browser/media/router/media_sinks_observer.h"
 #include "chrome/browser/media/router/media_source.h"
 #include "chrome/browser/media/router/media_source_helper.h"
+#include "chrome/browser/media/router/mojo/media_route_controller.h"
 #include "chrome/browser/media/router/mojo/media_router_mojo_impl.h"
 #include "chrome/browser/media/router/presentation_service_delegate_impl.h"
 #include "chrome/browser/media/router/route_request_result.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/browser/ui/webui/media_router/media_router_localized_strings_provider.h"
 #include "chrome/browser/ui/webui/media_router/media_router_resources_provider.h"
 #include "chrome/browser/ui/webui/media_router/media_router_webui_message_handler.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
@@ skipping 104 matching lines @@
 }
 
 MediaRouterUI::UIMediaRoutesObserver::~UIMediaRoutesObserver() {}
 
 void MediaRouterUI::UIMediaRoutesObserver::OnRoutesUpdated(
     const std::vector<MediaRoute>& routes,
     const std::vector<MediaRoute::Id>& joinable_route_ids) {
   callback_.Run(routes, joinable_route_ids);
 }
 
+MediaRouterUI::UIMediaRouteStatusObserver::UIMediaRouteStatusObserver(
+    MediaRouterWebUIMessageHandler* handler)
+    : handler_(handler) {}
+MediaRouterUI::UIMediaRouteStatusObserver::~UIMediaRouteStatusObserver() {}
+
+void MediaRouterUI::UIMediaRouteStatusObserver::OnMediaRouteStatusUpdated(
+    const MediaStatus& status) {
+  handler_->UpdateMediaRouteStatus(status);
+}
+
 MediaRouterUI::MediaRouterUI(content::WebUI* web_ui)
     : ConstrainedWebDialogUI(web_ui),
       ui_initialized_(false),
       current_route_request_id_(-1),
       route_request_counter_(0),
       initiator_(nullptr),
       router_(nullptr),
       weak_factory_(this) {
   auto handler = base::MakeUnique<MediaRouterWebUIMessageHandler>(this);
   handler_ = handler.get();
@@ skipping 38 matching lines @@
     if (presentation_sinks_available) {
       create_session_request_->InvokeErrorCallback(content::PresentationError(
           content::PRESENTATION_ERROR_SESSION_REQUEST_CANCELLED,
           "Dialog closed."));
     } else {
       create_session_request_->InvokeErrorCallback(content::PresentationError(
           content::PRESENTATION_ERROR_NO_AVAILABLE_SCREENS,
           "No screens found."));
     }
   }
+  if (route_controller_)
+    route_controller_->RemoveObserver(route_status_observer_.get());
 }
 
 void MediaRouterUI::InitWithDefaultMediaSource(
     content::WebContents* initiator,
     PresentationServiceDelegateImpl* delegate) {
   DCHECK(initiator);
   DCHECK(!presentation_service_delegate_);
   DCHECK(!query_result_manager_.get());
 
   InitCommon(initiator);
@@ skipping 384 matching lines @@
       }
 
       routes_.push_back(route);
     }
   }
   UpdateRoutesToCastModesMapping();
 
   if (ui_initialized_)
     handler_->UpdateRoutes(routes_, joinable_route_ids_,
                            routes_and_cast_modes_);
+
+  if (selected_route_ && !IsValidRouteId(selected_route_.value())) {
+    selected_route_.reset();
+    route_controller_ = nullptr;
+  }
 }
 
 void MediaRouterUI::OnRouteResponseReceived(
     int route_request_id,
     const MediaSink::Id& sink_id,
     MediaCastMode cast_mode,
     const base::string16& presentation_request_source_name,
     const RouteRequestResult& result) {
   DVLOG(1) << "OnRouteResponseReceived";
   // If we receive a new route that we aren't expecting, do nothing.
@@ skipping 126 matching lines @@
     MediaRouterMetrics::RecordMediaRouterDialogLoaded(
         base::Time::Now() - start_time_);
     start_time_ = base::Time();
   }
 }
 
 void MediaRouterUI::UpdateMaxDialogHeight(int height) {
   handler_->UpdateMaxDialogHeight(height);
 }
 
+void MediaRouterUI::PlayRoute() {
+  if (route_controller_)
+    route_controller_->Play();
+}
+
+void MediaRouterUI::PauseRoute() {
+  if (route_controller_)
+    route_controller_->Pause();
+}
+
+void MediaRouterUI::SeekRoute(uint32_t time) {
+  if (route_controller_)
+    route_controller_->Seek(time);
+}
+
+void MediaRouterUI::SetRouteVolume(float volume) {
+  if (route_controller_)
+    route_controller_->SetVolume(volume);
+}
+
+void MediaRouterUI::SetRouteMute(bool mute) {
+  if (route_controller_)
+    route_controller_->SetMute(mute);
+}
+
+void MediaRouterUI::OnUIDetailsViewOpened(MediaRoute::Id route_id) {
+  if (!IsValidRouteId(route_id))
+    return;
+  selected_route_ = base::Optional<MediaRoute::Id>(route_id);
+  route_controller_ = router_->GetControllerForRoute(route_id);
+  route_status_observer_ =
+      base::MakeUnique<UIMediaRouteStatusObserver>(handler_);
+  route_controller_->AddObserver(route_status_observer_.get());
+}
+
+void MediaRouterUI::OnUIDetailsViewClosed() {
+  selected_route_.reset();
+  if (route_controller_)
+    route_controller_->RemoveObserver(route_status_observer_.get());
+  route_controller_ = nullptr;
+  route_status_observer_.reset();
+}
+
+bool MediaRouterUI::IsValidRouteId(const MediaRoute::Id& route_id) const {
+  return std::find_if(routes_.begin(), routes_.end(),
+                      [&route_id](const MediaRoute& route) {
+                        return route.media_route_id() == route_id;
+                      }) != routes_.end();
+}
+
 std::string MediaRouterUI::GetSerializedInitiatorOrigin() const {
   url::Origin origin = initiator_
                            ? url::Origin(initiator_->GetLastCommittedURL())
                            : url::Origin();
   return origin.Serialize();
 }
 
 }  // namespace media_router