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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_CLIENT_H_
#define MOJO_SHELL_PUBLIC_CPP_SHELL_CLIENT_H_
#include <stdint.h>
#include <string>
#include "mojo/public/cpp/system/macros.h"
#include "mojo/shell/public/cpp/connection.h"
namespace mojo {
class Shell;
// An interface representing an instance "known to the Mojo Shell". The
// implementation receives lifecycle messages for the instance and gets the
// opportunity to handle inbound connections brokered by the Shell. Every client
// of ShellConnection must implement this interface, and instances of this
// interface must outlive the ShellConnection.
class ShellClient {
public:
ShellClient();
virtual ~ShellClient();
// Called once a bidirectional connection with the shell has been established.
// |url| is the URL used to start the application.
// |id| is a unique identifier the shell uses to identify this specific
// instance of the application.
// |user_id| identifies the user this instance is run as.
// Called exactly once before any other method.
virtual void Initialize(Shell* shell,
const std::string& url,
uint32_t id,
uint32_t user_id = 0);
// Called when a connection to this client is brokered by the shell. Override
// to expose services to the remote application. Return true if the connection
// should succeed. Return false if the connection should be rejected and the
// underlying pipe closed. The default implementation returns false.
virtual bool AcceptConnection(Connection* connection);
// Called when ShellConnection's pipe to the Mojo Shell is closed.
//
// Returning true from this method will cause the ShellConnection instance to
// call this instance back via Quit(), and then run the termination closure
// passed to it (which may do cleanup like, for example, quitting a run loop).
// Returning false from this method will not do any of this. The client is
// then responsible for calling Shell::QuitNow() when it is ready to close.
// The client may do this if it wishes to continue servicing connections other
// than the Shell.
// The default implementation returns true.
virtual bool ShellConnectionLost();
// Called before ShellConnection::QuitNow(). After returning from this call
// the delegate can no longer rely on the main run loop still running.
virtual void Quit();
private:
MOJO_DISALLOW_COPY_AND_ASSIGN(ShellClient);
};
} // namespace mojo
#endif // MOJO_SHELL_PUBLIC_CPP_SHELL_CLIENT_H_
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