Move services/shell to services/service_manager

services/shell/public/cpp/service_context.h

-// 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.
-
-#ifndef SERVICES_SHELL_PUBLIC_CPP_SERVICE_CONTEXT_H_
-#define SERVICES_SHELL_PUBLIC_CPP_SERVICE_CONTEXT_H_
-
-#include <memory>
-#include <utility>
-#include <vector>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "mojo/public/cpp/bindings/binding.h"
-#include "mojo/public/cpp/system/core.h"
-#include "services/shell/public/cpp/connector.h"
-#include "services/shell/public/cpp/service.h"
-#include "services/shell/public/interfaces/connector.mojom.h"
-#include "services/shell/public/interfaces/service.mojom.h"
-
-namespace shell {
-
-// Encapsulates a connection to the Service Manager in two parts:
-// - a bound InterfacePtr to mojom::Connector, the primary mechanism
-//   by which the instantiating service connects to other services,
-//   brokered by the Service Manager.
-// - a bound InterfaceRequest of mojom::Service, an interface used by the
-//   Service Manager to inform this service of lifecycle events and
-//   inbound connections brokered by it.
-//
-// This class should be used in two scenarios:
-// - During early startup to bind the mojom::ServiceRequest obtained from
-//   the Service Manager, typically in response to either ServiceMain() or
-//   main().
-// - In an implementation of mojom::ServiceFactory to bind the
-//   mojom::ServiceRequest passed via CreateService. In this scenario there can
-//   be many instances of this class per process.
-//
-// Instances of this class are constructed with an implementation of the Service
-// Manager Client Lib's Service interface. See documentation in service.h
-// for details.
-//
-class ServiceContext : public mojom::Service {
- public:
-  // Creates a new ServiceContext bound to |request|. This connection may be
-  // used immediately to make outgoing connections via connector().  Does not
-  // take ownership of |service|, which must remain valid for the lifetime of
-  // ServiceContext. If either |connector| or |connector_request| is non-null
-  // both must be non-null. If both are null, the connection will create its own
-  // Connector and request to pass to the Service Manager on initialization.
-  ServiceContext(shell::Service* service,
-                 mojom::ServiceRequest request,
-                 std::unique_ptr<Connector> connector = nullptr,
-                 mojom::ConnectorRequest connector_request = nullptr);
-
-  ~ServiceContext() override;
-
-  Connector* connector() { return connector_.get(); }
-  const Identity& identity() { return identity_; }
-
-  // Specify a function to be called when the connection to the shell is lost.
-  // Note that if connection has already been lost, then |closure| is called
-  // immediately.
-  void SetConnectionLostClosure(const base::Closure& closure);
-
- private:
-  // mojom::Service:
-  void OnStart(const Identity& identity,
-               const OnStartCallback& callback) override;
-  void OnConnect(const Identity& source,
-                 mojom::InterfaceProviderRequest interfaces,
-                 const Interfaces& allowed_interfaces,
-                 const Classes& allowed_classes) override;
-
-  void OnConnectionError();
-
-  // A callback called when OnStart() is run.
-  base::Closure initialize_handler_;
-
-  // We track the lifetime of incoming connection registries as it more
-  // convenient for the client.
-  std::vector<std::unique_ptr<InterfaceRegistry>> incoming_connections_;
-
-  // A pending Connector request which will eventually be passed to the Service
-  // Manager.
-  mojom::ConnectorRequest pending_connector_request_;
-
-  shell::Service* service_;
-  mojo::Binding<mojom::Service> binding_;
-  std::unique_ptr<Connector> connector_;
-  shell::Identity identity_;
-  bool should_run_connection_lost_closure_ = false;
-
-  base::Closure connection_lost_closure_;
-
-  DISALLOW_COPY_AND_ASSIGN(ServiceContext);
-};
-
-}  // namespace shell
-
-#endif  // SERVICES_SHELL_PUBLIC_CPP_SERVICE_CONTEXT_H_