[Media Router] Wiring for searching route providers for new sinks.

chrome/browser/media/router/mojo/media_router_mojo_impl.h

 // 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.
 
 #ifndef CHROME_BROWSER_MEDIA_ROUTER_MOJO_MEDIA_ROUTER_MOJO_IMPL_H_
 #define CHROME_BROWSER_MEDIA_ROUTER_MOJO_MEDIA_ROUTER_MOJO_IMPL_H_
 
 #include <stdint.h>
 
 #include <deque>
 #include <map>
 #include <set>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 69 matching lines @@
   void SendRouteMessage(const MediaRoute::Id& route_id,
                         const std::string& message,
                         const SendRouteMessageCallback& callback) override;
   void SendRouteBinaryMessage(
       const MediaRoute::Id& route_id,
       scoped_ptr<std::vector<uint8_t>> data,
       const SendRouteMessageCallback& callback) override;
   void AddIssue(const Issue& issue) override;
   void ClearIssue(const Issue::Id& issue_id) override;
   void OnUserGesture() override;
+  void SearchSinksAndCreateRoute(
+      const MediaSink::Id& sink_id,
+      const MediaSource::Id& source_id,
+      const std::string& search_input,
+      const std::string& domain,
+      const GURL& origin,
+      content::WebContents* web_contents,
+      const std::vector<MediaRouteResponseCallback>& route_callbacks,
+      const MediaSinkSearchResponseCallback& sink_callback,
+      base::TimeDelta timeout,
+      bool off_the_record) override;
 
   const std::string& media_route_provider_extension_id() const {
     return media_route_provider_extension_id_;
   }
 
   void set_instance_id_for_test(const std::string& instance_id) {
     instance_id_ = instance_id;
   }
 
  private:
@@ skipping 133 matching lines @@
                             const SendRouteMessageCallback& callback);
   void DoSendSessionBinaryMessage(const MediaRoute::Id& route_id,
                                   scoped_ptr<std::vector<uint8_t>> data,
                                   const SendRouteMessageCallback& callback);
   void DoListenForRouteMessages(const MediaRoute::Id& route_id);
   void DoStopListeningForRouteMessages(const MediaRoute::Id& route_id);
   void DoStartObservingMediaSinks(const MediaSource::Id& source_id);
   void DoStopObservingMediaSinks(const MediaSource::Id& source_id);
   void DoStartObservingMediaRoutes(const MediaSource::Id& source_id);
   void DoStopObservingMediaRoutes(const MediaSource::Id& source_id);
+  void DoSearchSinksAndCreateRoute(
+      const MediaSink::Id& sink_id,
+      const MediaSource::Id& source_id,
+      const std::string& search_input,
+      const std::string& domain,
+      const std::string& origin,
+      int tab_id,
+      const std::vector<MediaRouteResponseCallback>& route_callbacks,
+      const MediaSinkSearchResponseCallback& sink_callback,
+      base::TimeDelta timeout,
+      bool off_the_record);
 
   // Invoked when the next batch of messages arrives.
   // |route_id|: ID of route of the messages.
   // |messages|: A list of messages received.
   // |error|: true if an error occurred.
   void OnRouteMessagesReceived(
       const MediaRoute::Id& route_id,
       mojo::Array<interfaces::RouteMessagePtr> messages,
       bool error);
 
   // Error handler callback for |binding_| and |media_route_provider_|.
   void OnConnectionError();
 
   // interfaces::MediaRouter implementation.
   void RegisterMediaRouteProvider(
       interfaces::MediaRouteProviderPtr media_route_provider_ptr,
       const interfaces::MediaRouter::RegisterMediaRouteProviderCallback&
           callback) override;
   void OnIssue(interfaces::IssuePtr issue) override;
   void OnSinksReceived(const mojo::String& media_source,
                        mojo::Array<interfaces::MediaSinkPtr> sinks,
                        mojo::Array<mojo::String> origins) override;
+  void OnSearchSinkIdReceived(const mojo::String& pseudo_sink_id,
+                              const mojo::String& sink_id) override;
   void OnRoutesUpdated(mojo::Array<interfaces::MediaRoutePtr> routes,
                        const mojo::String& media_source,
                        mojo::Array<mojo::String> joinable_route_ids) override;
   void OnSinkAvailabilityUpdated(
       interfaces::MediaRouter::SinkAvailability availability) override;
   void OnPresentationConnectionStateChanged(
       const mojo::String& route_id,
       interfaces::MediaRouter::PresentationConnectionState state) override;
   void OnPresentationConnectionClosed(
       const mojo::String& route_id,
       interfaces::MediaRouter::PresentationConnectionCloseReason reason,
       const mojo::String& message) override;
 
   // Converts the callback result of calling Mojo CreateRoute()/JoinRoute()
   // into a local callback.
   void RouteResponseReceived(
       const std::string& presentation_id,
       bool off_the_record,
       const std::vector<MediaRouteResponseCallback>& callbacks,
       interfaces::MediaRoutePtr media_route,
       const mojo::String& error_text,
       interfaces::RouteRequestResultCode result_code);
 
+  // Converts the callback result of calling Mojo SearchSinksAndCreateRoute()
+  // into a local callback.
+  void SearchAndCreateResponseReceived(
+      const std::string& presentation_id,
+      const std::vector<MediaRouteResponseCallback>& route_callbacks,
+      interfaces::MediaRoutePtr media_route,
+      const mojo::String& error_text,
+      interfaces::RouteRequestResultCode result_code);
+
   // Callback invoked by |event_page_tracker_| after an attempt to wake the
   // component extension. If |success| is false, the pending request queue is
   // drained.
   void EventPageWakeComplete(bool success);
 
   // Removes all requests from the pending requests queue. Called when there is
   // a permanent error connecting to component extension.
   void DrainRequestQueue();
 
   // Calls to |event_page_tracker_| to wake the component extension.
@@ skipping 27 matching lines @@
   // Pending requests queued to be executed once component extension
   // becomes ready.
   std::deque<base::Closure> pending_requests_;
 
   base::ScopedPtrHashMap<MediaSource::Id, scoped_ptr<MediaSinksQuery>>
       sinks_queries_;
 
   base::ScopedPtrHashMap<MediaSource::Id, scoped_ptr<MediaRoutesQuery>>
       routes_queries_;
 
+  std::unordered_map<std::string, MediaSinkSearchResponseCallback>
+      search_callbacks_;

[imcheng, 2016/04/18 23:15:46]

Is it possible that multiple callbacks could exist for the same sink id at the
same time?

[btolsch, 2016/04/19 01:39:43]

One UI can't create that situation, but if two UIs could submit the search near
simultaneously then yes. I converted it to a list. Let me know if you'd rather
it stay as one entry and not handle this case.

+
   using PresentationSessionMessagesObserverList =
       base::ObserverList<PresentationSessionMessagesObserver>;
   base::ScopedPtrHashMap<MediaRoute::Id,
                          scoped_ptr<PresentationSessionMessagesObserverList>>
       messages_observers_;
 
   // IDs of MediaRoutes being listened for messages. Note that this is
   // different from |message_observers_| because we might be waiting for
   // |OnRouteMessagesReceived()| to be invoked after all observers for that
   // route have been removed.
@@ skipping 50 matching lines @@
 #endif
 
   base::WeakPtrFactory<MediaRouterMojoImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaRouterMojoImpl);
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_MEDIA_ROUTER_MOJO_MEDIA_ROUTER_MOJO_IMPL_H_