Pass ServiceProvider thru ViewManagerService::Embed() allowing embedder & embeddee to expose servic…

mojo/public/cpp/application/lib/service_provider_impl.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 "mojo/public/cpp/application/service_provider_impl.h"
+
+#include "mojo/public/cpp/application/lib/service_connector.h"
+#include "mojo/public/cpp/application/lib/weak_service_provider.h"
+#include "mojo/public/cpp/environment/logging.h"
+
+namespace mojo {
+
+ServiceProviderImpl::ServiceProviderImpl() : remote_(NULL) {
+}
+
+ServiceProviderImpl::~ServiceProviderImpl() {
+}
+
+ServiceProvider* ServiceProviderImpl::CreateRemoteServiceProvider() {
+  // TODO(beng): it sure would be nice if this method could return a scoped_ptr.
+  MOJO_DCHECK(!remote_);
+  remote_ = new internal::WeakServiceProvider(client());
+  return remote_;
+}
+
+void ServiceProviderImpl::ConnectToService(
+    const String& service_name,
+    ScopedMessagePipeHandle client_handle) {
+  if (service_connectors_.find(service_name) == service_connectors_.end()) {
+    client_handle.reset();
+    return;
+  }
+
+  internal::ServiceConnectorBase* service_connector =
+      service_connectors_[service_name];
+  return service_connector->ConnectToService(service_name,
+                                             client_handle.Pass());
+}
+
+void ServiceProviderImpl::OnConnectionError() {
+  if (remote_) {
+    remote_->Clear();
+    remote_ = NULL;
+  }
+}
+
+void ServiceProviderImpl::AddServiceConnector(
+    internal::ServiceConnectorBase* service_connector) {
+  RemoveServiceConnector(service_connector);
+  service_connectors_[service_connector->name()] = service_connector;
+  // TODO(beng): perhaps take app connection thru ctor??
+  service_connector->set_application_connection(NULL);
+}
+
+void ServiceProviderImpl::RemoveServiceConnector(
+    internal::ServiceConnectorBase* service_connector) {
+  NameToServiceConnectorMap::iterator it =
+      service_connectors_.find(service_connector->name());
+  if (it == service_connectors_.end())
+    return;
+  delete it->second;
+  service_connectors_.erase(it);
+}
+
+}  // namespace mojo