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// Copyright 2013 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 REMOTING_CLIENT_JNI_CHROMOTING_JNI_H_
#define REMOTING_CLIENT_JNI_CHROMOTING_JNI_H_
#include <jni.h>
#include "base/at_exit.h"
#include "net/url_request/url_request_context_getter.h"
#include "remoting/base/auto_thread.h"
#include "remoting/protocol/connection_to_host.h"
template<typename T> struct DefaultSingletonTraits;
namespace remoting {
class ChromotingJniInstance;
// Houses the global resources on which the Chromoting components run
// (e.g. message loops and task runners). Proxies outgoing JNI calls from its
// ChromotingJniInstance member to Java. All its methods should be invoked
// exclusively from the UI thread.
class ChromotingJni {
public:
// This class is instantiated at process initialization and persists until
// we close. Its components are reused across |ChromotingJniInstance|s.
static ChromotingJni* GetInstance();
scoped_refptr<AutoThreadTaskRunner> ui_task_runner() {
return ui_task_runner_;
}
scoped_refptr<AutoThreadTaskRunner> network_task_runner() {
return network_task_runner_;
}
scoped_refptr<AutoThreadTaskRunner> display_task_runner() {
return display_task_runner_;
}
scoped_refptr<net::URLRequestContextGetter> url_requester() {
return url_requester_;
}
// Initiates a connection with the specified host. Must only be called when
// |session_| is null (i.e. before any other call to Connect() or following
// a call to Disconnect()).
void ConnectToHost(const char* username,
const char* auth_token,
const char* host_jid,
const char* host_id,
const char* host_pubkey);
// Terminates any ongoing connection attempt and cleans up by nullifying
// |session_|. This is a no-op unless |session| is currently non-null.
void DisconnectFromHost();
// Returns the client for the currently-active session. Do not call if
// |session| is null.
scoped_refptr<ChromotingJniInstance> session() {
DCHECK(session_);
return session_;
}
// Notifies the user that the connection status has changed.
void ReportConnectionStatus(protocol::ConnectionToHost::State state,
protocol::ErrorCode error);
// Pops up a dialog box asking the user to enter a PIN.
void DisplayAuthenticationPrompt();
private:
ChromotingJni();
// Forces a DisconnectFromHost() in case there is any active or failed
// connection, then proceeds to tear down the Chromium dependencies on which
// all sessions depended. Because destruction only occurs at application exit
// after all connections have terminated, it is safe to make unretained
// cross-thread calls on the class.
virtual ~ChromotingJni();
// Reference to the Java class into which we make JNI calls.
jclass class_;
// Used by the Chromium libraries to clean up the base and net libraries' JNI
// bindings. It must persist for the lifetime of the singleton.
scoped_ptr<base::AtExitManager> at_exit_manager_;
// Chromium code's connection to the Java message loop.
scoped_ptr<base::MessageLoopForUI> ui_loop_;
// References to native threads.
scoped_refptr<AutoThreadTaskRunner> ui_task_runner_;
scoped_refptr<AutoThreadTaskRunner> network_task_runner_;
scoped_refptr<AutoThreadTaskRunner> display_task_runner_;
scoped_refptr<net::URLRequestContextGetter> url_requester_;
// Contains all connection-specific state.
scoped_refptr<ChromotingJniInstance> session_;
friend struct DefaultSingletonTraits<ChromotingJni>;
DISALLOW_COPY_AND_ASSIGN(ChromotingJni);
};
} // namespace remoting
#endif
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