Extracts InterfaceRegistry from ConnectionImpl.

mojo/shell/public/cpp/lib/interface_registry.cc

+// 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 "mojo/shell/public/cpp/interface_registry.h"
+
+#include "mojo/shell/public/cpp/connection.h"
+
+namespace mojo {
+
+InterfaceRegistry::InterfaceRegistry(Connection* connection)
+    : InterfaceRegistry(GetProxy(&client_handle_), connection) {}
+
+InterfaceRegistry::InterfaceRegistry(
+    shell::mojom::InterfaceProviderRequest request,
+    Connection* connection)
+    : binding_(this),
+      connection_(connection),
+      default_binder_(nullptr) {
+  if (request.is_pending())
+    binding_.Bind(std::move(request));
+}
+
+InterfaceRegistry::~InterfaceRegistry() {
+  for (auto& i : name_to_binder_)
+    delete i.second;
+  name_to_binder_.clear();
+}
+
+shell::mojom::InterfaceProviderPtr InterfaceRegistry::TakeClientHandle() {
+  return std::move(client_handle_);
+}
+
+// shell::mojom::InterfaceProvider:
+void InterfaceRegistry::GetInterface(const String& interface_name,
+                                     ScopedMessagePipeHandle handle) {
+  auto iter = name_to_binder_.find(interface_name);
+  InterfaceBinder* binder = iter != name_to_binder_.end() ? iter->second :
+      default_binder_;
+  if (binder)
+    binder->BindInterface(connection_, interface_name, std::move(handle));
+}
+
+bool InterfaceRegistry::SetInterfaceBinderForName(
+    InterfaceBinder* binder,
+    const std::string& interface_name) {
+  if (!connection_ ||
+      (connection_ && connection_->AllowsInterface(interface_name))) {
+    RemoveInterfaceBinderForName(interface_name);
+    name_to_binder_[interface_name] = binder;
+    return true;
+  }
+  LOG(WARNING) << "Connection CapabilityFilter prevented binding to interface: "
+               << interface_name << " connection_url:"
+               << connection_->GetConnectionURL() << " remote_url:"
+               << connection_->GetRemoteApplicationURL();
+  return false;
+}
+
+void InterfaceRegistry::RemoveInterfaceBinderForName(
+    const std::string& interface_name) {
+  NameToInterfaceBinderMap::iterator it = name_to_binder_.find(interface_name);
+  if (it == name_to_binder_.end())
+    return;
+  delete it->second;
+  name_to_binder_.erase(it);
+}
+
+}  // namespace mojo