[Presentation API] (4th)(1-UA blink side) Add WebPresentationConnection and WebPresentationConnecti…

content/renderer/presentation/presentation_dispatcher.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/renderer/presentation/presentation_dispatcher.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/public/common/presentation_constants.h"
 #include "content/public/renderer/render_frame.h"
+#include "content/renderer/presentation/presentation_connection_proxy.h"
 #include "mojo/public/cpp/bindings/type_converter.h"
 #include "services/service_manager/public/cpp/interface_provider.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/platform/modules/presentation/WebPresentationAvailabilityObserver.h"
+#include "third_party/WebKit/public/platform/modules/presentation/WebPresentationConnection.h"
+#include "third_party/WebKit/public/platform/modules/presentation/WebPresentationConnectionCallbacks.h"
 #include "third_party/WebKit/public/platform/modules/presentation/WebPresentationController.h"
 #include "third_party/WebKit/public/platform/modules/presentation/WebPresentationError.h"
 #include "third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h"
 #include "third_party/WebKit/public/platform/modules/presentation/WebPresentationSessionInfo.h"
 #include "third_party/WebKit/public/platform/modules/presentation/presentation.mojom.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "url/gurl.h"
 
 namespace mojo {
 
@@ skipping 59 matching lines @@
       return blink::WebPresentationConnectionCloseReason::Error;
   }
 }
 }  // namespace
 
 namespace content {
 
 PresentationDispatcher::PresentationDispatcher(RenderFrame* render_frame)
     : RenderFrameObserver(render_frame),
       controller_(nullptr),
-      binding_(this) {
-}
+      receiver_(nullptr),
+      binding_(this) {}
 
 PresentationDispatcher::~PresentationDispatcher() {
   // Controller should be destroyed before the dispatcher when frame is
   // destroyed.
   DCHECK(!controller_);
 }
 
 void PresentationDispatcher::setController(
     blink::WebPresentationController* controller) {
   // There shouldn't be any swapping from one non-null controller to another.
   DCHECK(controller != controller_ && (!controller || !controller_));
   controller_ = controller;
   // The controller is set to null when the frame is about to be detached.
   // Nothing is listening for screen availability anymore but the Mojo service
   // will know about the frame being detached anyway.
 }
 
 void PresentationDispatcher::startSession(
     const blink::WebVector<blink::WebURL>& presentationUrls,
-    std::unique_ptr<blink::WebPresentationConnectionCallback> callback) {
+    std::unique_ptr<blink::WebPresentationConnectionCallbacks> callback) {
   DCHECK(callback);
   ConnectToPresentationServiceIfNeeded();
 
   std::vector<GURL> urls;
   for (const auto& url : presentationUrls)
     urls.push_back(url);
 
   // The dispatcher owns the service so |this| will be valid when
   // OnSessionCreated() is called. |callback| needs to be alive and also needs
   // to be destroyed so we transfer its ownership to the mojo callback.
   presentation_service_->StartSession(
       urls, base::Bind(&PresentationDispatcher::OnSessionCreated,
                        base::Unretained(this), base::Passed(&callback)));
 }
 
 void PresentationDispatcher::joinSession(
     const blink::WebVector<blink::WebURL>& presentationUrls,
     const blink::WebString& presentationId,
-    std::unique_ptr<blink::WebPresentationConnectionCallback> callback) {
+    std::unique_ptr<blink::WebPresentationConnectionCallbacks> callback) {
   DCHECK(callback);
   ConnectToPresentationServiceIfNeeded();
 
   std::vector<GURL> urls;
   for (const auto& url : presentationUrls)
     urls.push_back(url);
 
   // The dispatcher owns the service so |this| will be valid when
   // OnSessionCreated() is called. |callback| needs to be alive and also needs
   // to be destroyed so we transfer its ownership to the mojo callback.
   presentation_service_->JoinSession(
       urls, presentationId.utf8(),
       base::Bind(&PresentationDispatcher::OnSessionCreated,
                  base::Unretained(this), base::Passed(&callback)));
 }
 
-void PresentationDispatcher::sendString(const blink::WebURL& presentationUrl,
-                                        const blink::WebString& presentationId,
-                                        const blink::WebString& message) {
+void PresentationDispatcher::sendString(
+    const blink::WebURL& presentationUrl,
+    const blink::WebString& presentationId,
+    const blink::WebString& message,
+    const blink::WebPresentationConnectionProxy* connection_proxy) {
   if (message.utf8().size() > kMaxPresentationConnectionMessageSize) {
     // TODO(crbug.com/459008): Limit the size of individual messages to 64k
     // for now. Consider throwing DOMException or splitting bigger messages
     // into smaller chunks later.
     LOG(WARNING) << "message size exceeded limit!";
     return;
   }
 
-  message_request_queue_.push(base::WrapUnique(
-      CreateSendTextMessageRequest(presentationUrl, presentationId, message)));
+  message_request_queue_.push(base::WrapUnique(CreateSendTextMessageRequest(
+      presentationUrl, presentationId, message, connection_proxy)));
   // Start processing request if only one in the queue.
   if (message_request_queue_.size() == 1)
     DoSendMessage(message_request_queue_.front().get());
 }
 
 void PresentationDispatcher::sendArrayBuffer(
     const blink::WebURL& presentationUrl,
     const blink::WebString& presentationId,
     const uint8_t* data,
-    size_t length) {
+    size_t length,
+    const blink::WebPresentationConnectionProxy* connection_proxy) {
   DCHECK(data);
   if (length > kMaxPresentationConnectionMessageSize) {
     // TODO(crbug.com/459008): Same as in sendString().
     LOG(WARNING) << "data size exceeded limit!";
     return;
   }
 
   message_request_queue_.push(base::WrapUnique(CreateSendBinaryMessageRequest(
       presentationUrl, presentationId,
-      blink::mojom::PresentationMessageType::BINARY, data, length)));
+      blink::mojom::PresentationMessageType::BINARY, data, length,
+      connection_proxy)));
   // Start processing request if only one in the queue.
   if (message_request_queue_.size() == 1)
     DoSendMessage(message_request_queue_.front().get());
 }
 
 void PresentationDispatcher::sendBlobData(
     const blink::WebURL& presentationUrl,
     const blink::WebString& presentationId,
     const uint8_t* data,
-    size_t length) {
+    size_t length,
+    const blink::WebPresentationConnectionProxy* connection_proxy) {
   DCHECK(data);
   if (length > kMaxPresentationConnectionMessageSize) {
     // TODO(crbug.com/459008): Same as in sendString().
     LOG(WARNING) << "data size exceeded limit!";
     return;
   }
 
   message_request_queue_.push(base::WrapUnique(CreateSendBinaryMessageRequest(
       presentationUrl, presentationId,
-      blink::mojom::PresentationMessageType::BINARY, data, length)));
+      blink::mojom::PresentationMessageType::BINARY, data, length,
+      connection_proxy)));
   // Start processing request if only one in the queue.
   if (message_request_queue_.size() == 1)
     DoSendMessage(message_request_queue_.front().get());
 }
 
 void PresentationDispatcher::DoSendMessage(SendMessageRequest* request) {
   ConnectToPresentationServiceIfNeeded();
 
   presentation_service_->SendConnectionMessage(
       std::move(request->session_info), std::move(request->message),
@@ skipping 248 matching lines @@
     TryRemoveAvailabilityListener(listener);
 }
 
 void PresentationDispatcher::OnDefaultSessionStarted(
     blink::mojom::PresentationSessionInfoPtr session_info) {
   if (!controller_)
     return;
 
   if (!session_info.is_null()) {
     presentation_service_->ListenForConnectionMessages(session_info.Clone());
-    controller_->didStartDefaultSession(
+    auto* connection = controller_->didStartDefaultSession(
         mojo::ConvertTo<blink::WebPresentationSessionInfo>(session_info));
+    auto* controller_connection_proxy =
+        new ControllerConnectionProxy(connection);
+    connection->bindProxy(base::WrapUnique(controller_connection_proxy));
   }
 }
 
 void PresentationDispatcher::OnSessionCreated(
-    std::unique_ptr<blink::WebPresentationConnectionCallback> callback,
+    std::unique_ptr<blink::WebPresentationConnectionCallbacks> callback,
     blink::mojom::PresentationSessionInfoPtr session_info,
     blink::mojom::PresentationErrorPtr error) {
   DCHECK(callback);
   if (!error.is_null()) {
     DCHECK(session_info.is_null());
     callback->onError(blink::WebPresentationError(
         GetWebPresentationErrorTypeFromMojo(error->error_type),
         blink::WebString::fromUTF8(error->message)));
     return;
   }
 
   DCHECK(!session_info.is_null());
   presentation_service_->ListenForConnectionMessages(session_info.Clone());
   callback->onSuccess(
       mojo::ConvertTo<blink::WebPresentationSessionInfo>(session_info));
+
+  auto* connection = callback->getConnection();
+  DCHECK(connection);
+  auto* controller_connection_proxy = new ControllerConnectionProxy(connection);
+  connection->bindProxy(base::WrapUnique(controller_connection_proxy));
 }
 
 void PresentationDispatcher::OnReceiverConnectionAvailable(
     blink::mojom::PresentationSessionInfoPtr session_info,
-    blink::mojom::PresentationConnectionPtr,
-    blink::mojom::PresentationConnectionRequest) {
-  if (receiver_) {
-    receiver_->onReceiverConnectionAvailable(
-        mojo::ConvertTo<blink::WebPresentationSessionInfo>(session_info));
-  }
+    blink::mojom::PresentationConnectionPtr controller_connection_ptr,
+    blink::mojom::PresentationConnectionRequest receiver_connection_request) {
+  DCHECK(receiver_);
+  // Bind receiver_connection_proxy with PresentationConnection in receiver
+  // page.
+  auto* connection = receiver_->onReceiverConnectionAvailable(
+      mojo::ConvertTo<blink::WebPresentationSessionInfo>(session_info));
+  auto* receiver_connection_proxy = new ReceiverConnectionProxy(connection);
+  connection->bindProxy(base::WrapUnique(receiver_connection_proxy));
+
+  receiver_connection_proxy->Bind(std::move(receiver_connection_request));
+  receiver_connection_proxy->BindControllerConnection(
+      std::move(controller_connection_ptr));
 }
 
 void PresentationDispatcher::OnConnectionStateChanged(
     blink::mojom::PresentationSessionInfoPtr session_info,
     blink::mojom::PresentationConnectionState state) {
   if (!controller_)
     return;
 
   controller_->didChangeSessionState(
       mojo::ConvertTo<blink::WebPresentationSessionInfo>(session_info),
@@ skipping 149 matching lines @@
         status ? status->last_known_availability : ScreenAvailability::UNKNOWN;
     current_availability =
         std::max(current_availability, static_cast<int>(screen_availability));
   }
 
   return static_cast<ScreenAvailability>(current_availability);
 }
 
 PresentationDispatcher::SendMessageRequest::SendMessageRequest(
     blink::mojom::PresentationSessionInfoPtr session_info,
-    blink::mojom::ConnectionMessagePtr message)
-    : session_info(std::move(session_info)), message(std::move(message)) {}
+    blink::mojom::ConnectionMessagePtr message,
+    const blink::WebPresentationConnectionProxy* connection_proxy)
+    : session_info(std::move(session_info)),
+      message(std::move(message)),
+      connection_proxy(connection_proxy) {}
 
 PresentationDispatcher::SendMessageRequest::~SendMessageRequest() {}
 
 // static
 PresentationDispatcher::SendMessageRequest*
 PresentationDispatcher::CreateSendTextMessageRequest(
     const blink::WebURL& presentationUrl,
     const blink::WebString& presentationId,
-    const blink::WebString& message) {
+    const blink::WebString& message,
+    const blink::WebPresentationConnectionProxy* connection_proxy) {
   blink::mojom::PresentationSessionInfoPtr session_info =
       blink::mojom::PresentationSessionInfo::New();
   session_info->url = presentationUrl;
   session_info->id = presentationId.utf8();
 
   blink::mojom::ConnectionMessagePtr session_message =
       blink::mojom::ConnectionMessage::New();
   session_message->type = blink::mojom::PresentationMessageType::TEXT;
   session_message->message = message.utf8();
   return new SendMessageRequest(std::move(session_info),
-                                std::move(session_message));
+                                std::move(session_message), connection_proxy);
 }
 
 // static
 PresentationDispatcher::SendMessageRequest*
 PresentationDispatcher::CreateSendBinaryMessageRequest(
     const blink::WebURL& presentationUrl,
     const blink::WebString& presentationId,
     blink::mojom::PresentationMessageType type,
     const uint8_t* data,
-    size_t length) {
+    size_t length,
+    const blink::WebPresentationConnectionProxy* connection_proxy) {
   blink::mojom::PresentationSessionInfoPtr session_info =
       blink::mojom::PresentationSessionInfo::New();
   session_info->url = presentationUrl;
   session_info->id = presentationId.utf8();
 
   blink::mojom::ConnectionMessagePtr session_message =
       blink::mojom::ConnectionMessage::New();
   session_message->type = type;
   session_message->data = std::vector<uint8_t>(data, data + length);
   return new SendMessageRequest(std::move(session_info),
-                                std::move(session_message));
+                                std::move(session_message), connection_proxy);
 }
 
 PresentationDispatcher::AvailabilityListener::AvailabilityListener(
     const std::vector<GURL>& availability_urls)
     : urls(availability_urls) {}
 
 PresentationDispatcher::AvailabilityListener::~AvailabilityListener() {}
 
 PresentationDispatcher::ListeningStatus::ListeningStatus(
     const GURL& availability_url)
     : url(availability_url),
       last_known_availability(ScreenAvailability::UNKNOWN),
       listening_state(ListeningState::INACTIVE) {}
 
 PresentationDispatcher::ListeningStatus::~ListeningStatus() {}
 
 }  // namespace content