Remote Assistance on Chrome OS Part III - NativeMessageHost

chrome/browser/extensions/api/messaging/native_message_port_chromeos.cc

+// Copyright 2014 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/extensions/api/messaging/native_message_port.h"
+
+#include "chrome/browser/extensions/api/messaging/native_message_process_host.h"
+
+namespace extensions {
+
+NativeMessagePort::NativeMessagePort(

[Sergey Ulanov, 2014/09/27 00:24:10]

Why do we need chrome-os specific version of this file? It looks almost exactly
like native_message_port.cc and there is nothing in the logic of this file
that's OS specific. It's just a connector between MessageService and
NativeMessageHost.

[kelvinp, 2014/09/29 22:59:40]

Done.

+    base::WeakPtr<MessageService> message_service,
+    int port_id,
+    scoped_ptr<NativeMessageHost> native_message_host)
+    : weak_message_service_(message_service),
+      port_id_(port_id),
+      native_message_host_(native_message_host.Pass()),
+      weak_factory_(this) {
+  native_message_host_->set_client(weak_factory_.GetWeakPtr());
+}
+
+NativeMessagePort::~NativeMessagePort() {
+}
+
+void NativeMessagePort::DispatchOnMessage(const Message& message,
+                                          int target_port_id) {
+  native_message_host_->Send(message.data);
+}
+
+void NativeMessagePort::PostMessageFromNativeHost(const std::string& message) {
+  if (weak_message_service_) {
+    weak_message_service_->PostMessage(
+        port_id_, Message(message, false /* user_gesture */));
+  }
+}
+
+void NativeMessagePort::CloseChannel(const std::string& error_message) {
+  weak_factory_.InvalidateWeakPtrs();
+  if (weak_message_service_) {
+    weak_message_service_->CloseChannel(port_id_, error_message);
+  }
+}
+
+}  // namespace extensions
+