[Presentation API] Add support to content/ for multiple URLs per PresentationRequest.

content/browser/presentation/presentation_service_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 "content/browser/presentation/presentation_service_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <algorithm>
-#include <string>
 #include <utility>
-#include <vector>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "content/browser/presentation/presentation_type_converters.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/presentation_session_message.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 188 matching lines @@
   const std::string& availability_url = url.get();
   auto listener_it = screen_availability_listeners_.find(availability_url);
   if (listener_it == screen_availability_listeners_.end())
     return;
 
   delegate_->RemoveScreenAvailabilityListener(
       render_process_id_, render_frame_id_, listener_it->second.get());
   screen_availability_listeners_.erase(listener_it);
 }
 
-void PresentationServiceImpl::StartSession(const mojo::String& presentation_url,
-                                           const NewSessionCallback& callback) {
+void PresentationServiceImpl::StartSession(
+    mojo::Array<mojo::String> presentation_urls,
+    const NewSessionCallback& callback) {
   DVLOG(2) << "StartSession";
   if (!delegate_) {
     callback.Run(
         blink::mojom::PresentationSessionInfoPtr(),
         blink::mojom::PresentationError::From(PresentationError(
             PRESENTATION_ERROR_NO_AVAILABLE_SCREENS, "No screens found.")));
     return;
   }
 
   // There is a StartSession request in progress. To avoid queueing up
   // requests, the incoming request is rejected.
   if (start_session_request_id_ != kInvalidRequestSessionId) {
     InvokeNewSessionCallbackWithError(callback);
     return;
   }
 
+  std::vector<std::string> urls(presentation_urls.size());
+  std::transform(presentation_urls.begin(), presentation_urls.end(),
+                 urls.begin(),
+                 [](const mojo::String& url) { return url.get(); });
+
   start_session_request_id_ = GetNextRequestSessionId();
   pending_start_session_cb_.reset(new NewSessionCallbackWrapper(callback));
   delegate_->StartSession(
-      render_process_id_, render_frame_id_, presentation_url,
+      render_process_id_, render_frame_id_, urls,
       base::Bind(&PresentationServiceImpl::OnStartSessionSucceeded,
                  weak_factory_.GetWeakPtr(), start_session_request_id_),
       base::Bind(&PresentationServiceImpl::OnStartSessionError,
                  weak_factory_.GetWeakPtr(), start_session_request_id_));
 }
 
 void PresentationServiceImpl::JoinSession(
-    const mojo::String& presentation_url,
+    mojo::Array<mojo::String> presentation_urls,
     const mojo::String& presentation_id,
     const NewSessionCallback& callback) {
   DVLOG(2) << "JoinSession";
   if (!delegate_) {
     callback.Run(blink::mojom::PresentationSessionInfoPtr(),
                  blink::mojom::PresentationError::From(PresentationError(
                      PRESENTATION_ERROR_NO_PRESENTATION_FOUND,
                      "Error joining route: No matching route")));
     return;
   }
 
   int request_session_id = RegisterJoinSessionCallback(callback);
   if (request_session_id == kInvalidRequestSessionId) {
     InvokeNewSessionCallbackWithError(callback);
     return;
   }
+  std::vector<std::string> urls(presentation_urls.size());
+  std::transform(presentation_urls.begin(), presentation_urls.end(),
+                 urls.begin(),
+                 [](const mojo::String& url) { return url.get(); });
+
   delegate_->JoinSession(
-      render_process_id_,
-      render_frame_id_,
-      presentation_url,
-      presentation_id,
+      render_process_id_, render_frame_id_, urls, presentation_id,
       base::Bind(&PresentationServiceImpl::OnJoinSessionSucceeded,
                  weak_factory_.GetWeakPtr(), request_session_id),
       base::Bind(&PresentationServiceImpl::OnJoinSessionError,
                  weak_factory_.GetWeakPtr(), request_session_id));
 }
 
 int PresentationServiceImpl::RegisterJoinSessionCallback(
     const NewSessionCallback& callback) {
   if (pending_join_session_cbs_.size() >= kMaxNumQueuedSessionRequests)
     return kInvalidRequestSessionId;
@@ skipping 68 matching lines @@
   auto it = pending_join_session_cbs_.find(request_session_id);
   if (it == pending_join_session_cbs_.end())
     return false;
 
   DCHECK(it->second.get());
   it->second->Run(std::move(session), std::move(error));
   pending_join_session_cbs_.erase(it);
   return true;
 }
 
-void PresentationServiceImpl::SetDefaultPresentationURL(
-    const mojo::String& url) {
-  DVLOG(2) << "SetDefaultPresentationURL";
+void PresentationServiceImpl::SetDefaultPresentationUrls(
+    mojo::Array<mojo::String> presentation_urls) {
+  DVLOG(2) << "SetDefaultPresentationUrls";
   if (!delegate_)
     return;
 
-  const std::string& new_default_url = url.get();
-  if (default_presentation_url_ == new_default_url)
+  std::vector<std::string> new_default_urls(presentation_urls.size());
+  std::transform(presentation_urls.begin(), presentation_urls.end(),
+                 new_default_urls.begin(),
+                 [](const mojo::String& url) { return url.get(); });
+
+  if (default_presentation_urls_ == new_default_urls)
     return;
 
-  default_presentation_url_ = new_default_url;
-  delegate_->SetDefaultPresentationUrl(
-      render_process_id_, render_frame_id_, new_default_url,
+  default_presentation_urls_ = new_default_urls;
+  delegate_->SetDefaultPresentationUrls(
+      render_process_id_, render_frame_id_, new_default_urls,
       base::Bind(&PresentationServiceImpl::OnDefaultPresentationStarted,
                  weak_factory_.GetWeakPtr()));
 }
 
 void PresentationServiceImpl::SendSessionMessage(
     blink::mojom::PresentationSessionInfoPtr session,
     blink::mojom::SessionMessagePtr session_message,
     const SendSessionMessageCallback& callback) {
   DVLOG(2) << "SendSessionMessage";
   DCHECK(!session_message.is_null());
@@ skipping 133 matching lines @@
              << "should've been deleted during RenderFrameDeleted().";
   Reset();
   delete this;
 }
 
 void PresentationServiceImpl::Reset() {
   DVLOG(2) << "PresentationServiceImpl::Reset";
   if (delegate_)
     delegate_->Reset(render_process_id_, render_frame_id_);
 
-  default_presentation_url_.clear();
+  default_presentation_urls_.clear();
 
   screen_availability_listeners_.clear();
 
   start_session_request_id_ = kInvalidRequestSessionId;
   pending_start_session_cb_.reset();
 
   pending_join_session_cbs_.clear();
 
   if (on_session_messages_callback_.get()) {
     on_session_messages_callback_->Run(
@@ skipping 65 matching lines @@
 
 void PresentationServiceImpl::NewSessionCallbackWrapper::Run(
     blink::mojom::PresentationSessionInfoPtr session,
     blink::mojom::PresentationErrorPtr error) {
   DCHECK(!callback_.is_null());
   callback_.Run(std::move(session), std::move(error));
   callback_.Reset();
 }
 
 }  // namespace content