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// 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 MOJO_SHELL_PUBLIC_CPP_SHELL_CONNECTION_H_
#define MOJO_SHELL_PUBLIC_CPP_SHELL_CONNECTION_H_
#include <utility>
#include <vector>
#include "base/macros.h"
#include "base/memory/scoped_vector.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "mojo/public/cpp/bindings/callback.h"
#include "mojo/public/cpp/system/core.h"
#include "mojo/shell/public/cpp/shell_client.h"
#include "mojo/shell/public/interfaces/connector.mojom.h"
#include "mojo/shell/public/interfaces/shell_client.mojom.h"
namespace mojo {
class Connector;
// Encapsulates a connection to the Mojo Shell in two parts:
// - a bound InterfacePtr to mojo::shell::mojom::Shell, the primary mechanism
// by which the instantiating application interacts with other services
// brokered by the Mojo Shell.
// - a bound InterfaceRequest of mojo::shell::mojom::ShellClient, an interface
// used by the Mojo Shell to inform this application of lifecycle events and
// inbound connections brokered by it.
//
// This class should be used in two scenarios:
// - During early startup to bind the mojo::shell::mojom::ShellClientRequest
// obtained from the Mojo Shell. This is typically in response to either
// MojoMain() or main().
// - In an implementation of mojo::shell::mojom::ContentHandler to bind the
// mojo::shell::mojom::ShellClientRequest passed via StartApplication. In this
// scenario there can be many instances of this class per process.
//
// Instances of this class are constructed with an implementation of the Shell
// Client Lib's mojo::ShellClient interface. See documentation in shell_client.h
// for details.
//
class ShellConnection : public shell::mojom::ShellClient {
public:
// Creates a new ShellConnection to eventually be bound to a
// ShellClientRequest (see BindToRequest()). This connection may be used
// immediately to begin making outgoing connections via connector().
//
// Does not take ownership of |client|, which must remain valid for the
// lifetime of ShellConnection.
explicit ShellConnection(mojo::ShellClient* client);
// Like above but binds to |request| upon construction.
ShellConnection(mojo::ShellClient* client,
shell::mojom::ShellClientRequest request);
~ShellConnection() override;
Connector* connector() { return connector_.get(); }
// Binds this ShellConnection to a client request if one was not available at
// construction time.
void BindToRequest(shell::mojom::ShellClientRequest request);
// TODO(rockot): Remove this once we get rid of app tests.
void SetAppTestConnectorForTesting(shell::mojom::ConnectorPtr connector);
private:
// shell::mojom::ShellClient:
void Initialize(shell::mojom::IdentityPtr identity,
uint32_t id,
const InitializeCallback& callback) override;
void AcceptConnection(
shell::mojom::IdentityPtr source,
uint32_t source_id,
shell::mojom::InterfaceProviderRequest remote_interfaces,
shell::mojom::InterfaceProviderPtr local_interfaces,
shell::mojom::CapabilityRequestPtr allowed_capabilities,
const String& name) override;
void OnConnectionError();
// We track the lifetime of incoming connection registries as it more
// convenient for the client.
ScopedVector<Connection> incoming_connections_;
// A pending Connector request which will eventually be passed to the shell.
shell::mojom::ConnectorRequest pending_connector_request_;
mojo::ShellClient* client_;
Binding<shell::mojom::ShellClient> binding_;
scoped_ptr<Connector> connector_;
DISALLOW_COPY_AND_ASSIGN(ShellConnection);
};
} // namespace mojo
#endif // MOJO_SHELL_PUBLIC_CPP_SHELL_CONNECTION_H_
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