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// Copyright (c) 2012 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 CHROMEOS_IME_IBUS_DAEMON_CONTROLLER_H_
#define CHROMEOS_IME_IBUS_DAEMON_CONTROLLER_H_
#include "base/memory/ref_counted.h"
#include "base/sequenced_task_runner.h"
#include "chromeos/chromeos_export.h"
namespace chromeos {
// IBusDaemonController is used to start/stop ibus-daemon process. This class is
// also watching ibus-daemon process and if it is crashed, re-launch it
// automatically. This class is managed as Singleton.
class CHROMEOS_EXPORT IBusDaemonController {
public:
class Observer {
public:
// Called when the connection with ibus-daemon is established.
virtual void OnConnected() = 0;
// Called when the connection with ibus-daemon is lost.
virtual void OnDisconnected() = 0;
};
virtual ~IBusDaemonController();
// Initializes IBusDaemonController. ibus-daemon related file handling is
// posted to |file_task_runner|.
virtual void Initialize(
const scoped_refptr<base::SequencedTaskRunner>& ui_task_runner,
const scoped_refptr<base::SequencedTaskRunner>& file_task_runner) = 0;
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Starts ibus-daemon.
virtual bool Start() = 0;
// Stops ibus-daemon.
virtual bool Stop() = 0;
// Returns actual implementation of IBusDaemonController. If the browser is
// not running on the Chrome OS device, this function returns stub
// implementation.
static CHROMEOS_EXPORT IBusDaemonController* GetInstance();
protected:
// IBusDaemonController is managed as singleton. USe GetInstance instead.
IBusDaemonController();
DISALLOW_COPY_AND_ASSIGN(IBusDaemonController);
};
} // namespace chromeos
#endif // CHROMEOS_IME_IBUS_DAEMON_CONTROLLER_H_
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