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

content/renderer/presentation/presentation_connection_proxy.cc

Index: content/renderer/presentation/presentation_connection_proxy.cc
diff --git a/content/renderer/presentation/presentation_connection_proxy.cc b/content/renderer/presentation/presentation_connection_proxy.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b4a5850c7fa60bb90e39b8dfea9188985388e1cd
--- /dev/null
+++ b/content/renderer/presentation/presentation_connection_proxy.cc
@@ -0,0 +1,113 @@
+// Copyright 2016 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_connection_proxy.h"
+
+#include "base/logging.h"
+#include "content/renderer/presentation/presentation_dispatcher.h"
+#include "third_party/WebKit/public/platform/WebString.h"
+#include "third_party/WebKit/public/platform/modules/presentation/WebPresentationConnection.h"
+#include "third_party/WebKit/public/platform/modules/presentation/WebPresentationController.h"
+#include "third_party/WebKit/public/platform/modules/presentation/WebPresentationSessionInfo.h"
+
+namespace content {
+
+PresentationConnectionProxy::PresentationConnectionProxy(
+    blink::WebPresentationConnection* connection)
+    : binding_(this),
+      target_connection_(nullptr),
+      source_connection_(connection) {
+  DCHECK(source_connection_);
+}
+
+PresentationConnectionProxy::~PresentationConnectionProxy() = default;
+
+void PresentationConnectionProxy::SendConnectionMessage(
+    blink::mojom::ConnectionMessagePtr session_message,
+    const OnMessageCallback& callback) const {
+  DCHECK(target_connection_);
+  target_connection_->OnMessage(std::move(session_message), callback);
+}
+
+void PresentationConnectionProxy::OnMessage(
+    blink::mojom::ConnectionMessagePtr message,
+    const OnMessageCallback& callback) {
+  DCHECK(source_connection_);
+  DCHECK(!callback.is_null());
+
+  switch (message->type) {
+    case blink::mojom::PresentationMessageType::TEXT: {
+      DCHECK(message->message);
+      source_connection_->didReceiveTextMessage(
+          blink::WebString::fromUTF8(message->message.value()));
+      break;
+    }
+    case blink::mojom::PresentationMessageType::BINARY: {
+      DCHECK(message->data);
+      source_connection_->didReceiveBinaryMessage(&(message->data->front()),
+                                                  message->data->size());
+      break;
+    }
+    default: {
+      callback.Run(false);
+      NOTREACHED();
+      break;
+    }
+  }
+
+  callback.Run(true);
+}
+
+void PresentationConnectionProxy::DidChangeState(
+    blink::mojom::PresentationConnectionState state) {
+  DCHECK(source_connection_);
+  if (state == blink::mojom::PresentationConnectionState::CONNECTED) {
+    source_connection_->didChangeState(
+        blink::WebPresentationConnectionState::Connected);
+  } else {
+    // |DidChangeState| should only handles state transition from connecting ->
+    // connected. PresentationService and MRP handles other state transitions.
+    NOTREACHED();
+  }
+}
+
+ControllerConnectionProxy::ControllerConnectionProxy(
+    blink::WebPresentationConnection* connection)
+    : PresentationConnectionProxy(connection) {}
+
+ControllerConnectionProxy::~ControllerConnectionProxy() {}
+
+blink::mojom::PresentationConnectionPtr ControllerConnectionProxy::Bind() {
+  return binding_.CreateInterfacePtrAndBind();
+}
+
+blink::mojom::PresentationConnectionRequest
+ControllerConnectionProxy::MakeRemoteRequest() {
+  DCHECK(!target_connection_)
+      << "target_connection_ should only be bound once.";
+  return mojo::MakeRequest(&target_connection_);
+}
+
+ReceiverConnectionProxy::ReceiverConnectionProxy(
+    blink::WebPresentationConnection* connection)
+    : PresentationConnectionProxy(connection) {}
+
+ReceiverConnectionProxy::~ReceiverConnectionProxy() {}
+
+void ReceiverConnectionProxy::Bind(
+    blink::mojom::PresentationConnectionRequest target_conn_request) {
+  binding_.Bind(std::move(target_conn_request));

[dcheng, 2017/01/17 23:31:49]

Nit: conn => connection

[zhaobin, 2017/01/18 18:25:47]

Done.

+}
+
+void ReceiverConnectionProxy::SetTargetConnection(

[dcheng, 2017/01/17 23:31:49]

Nit: consider calling this BindTargetConnection as a hint that's only supposed
to be called once (this is a weak convention, but I personally like it)

[zhaobin, 2017/01/18 18:25:47]

Done.

+    blink::mojom::PresentationConnectionPtr connection) {
+  DCHECK(!target_connection_);
+  target_connection_ = std::move(connection);
+  target_connection_->DidChangeState(
+      blink::mojom::PresentationConnectionState::CONNECTED);
+
+  DidChangeState(blink::mojom::PresentationConnectionState::CONNECTED);
+}
+
+}  // namespace content