/*
    SPDX-FileCopyrightText: 2006-2007 Kevin Ottens <ervin@kde.org>

    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/

#ifndef SOLID_DEVICEINTERFACE_H
#define SOLID_DEVICEINTERFACE_H

#include <QObject>

#include <solid/solid_export.h>

namespace Solid
{
class Device;
class DevicePrivate;
class Predicate;
class DeviceInterfacePrivate;

/**
 * Base class of all the device interfaces.
 *
 * A device interface describes what a device can do. A device generally has
 * a set of device interfaces.
 */
class SOLID_EXPORT DeviceInterface : public QObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(DeviceInterface)

public:
    /**
     * This enum type defines the type of device interface that a Device can have.
     *
     * - Unknown : An undetermined device interface
     * - Processor : A processor
     * - Block : A block device
     * - StorageAccess : A mechanism to access data on a storage device
     * - StorageDrive : A storage drive
     * - OpticalDrive : An optical drive (CD-ROM, DVD, ...)
     * - StorageVolume : A volume
     * - OpticalDisc : An optical disc
     * - Camera : A digital camera
     * - PortableMediaPlayer: A portable media player
     * - NetworkShare: A network share interface
     */
    enum Type { Unknown = 0, GenericInterface = 1, Processor = 2,
                Block = 3, StorageAccess = 4, StorageDrive = 5,
                OpticalDrive = 6, StorageVolume = 7, OpticalDisc = 8,
                Camera = 9, PortableMediaPlayer = 10,
                Battery = 12, NetworkShare = 14, Last = 0xffff
              };
    Q_ENUM(Type)

    /**
     * Destroys a DeviceInterface object.
     */
    virtual ~DeviceInterface();

    /**
     * Indicates if this device interface is valid.
     * A device interface is considered valid if the device it is referring is available in the system.
     *
     * @return true if this device interface's device is available, false otherwise
     */
    bool isValid() const;

    /**
     *
     * @return the class name of the device interface type
     */
    static QString typeToString(Type type);

    /**
     *
     * @return the device interface type for the given class name
     */
    static Type stringToType(const QString &type);

    /**
     *
     * @return a description suitable to display in the UI of the device interface type
     * @since 4.4
     */
    static QString typeDescription(Type type);

protected:
    /**
     * @internal
     * Creates a new DeviceInterface object.
     *
     * @param dd the private d member. It will take care of deleting it upon destruction.
     * @param backendObject the device interface object provided by the backend
     */
    DeviceInterface(DeviceInterfacePrivate &dd, QObject *backendObject);

    DeviceInterfacePrivate *d_ptr;

private:
    friend class Device;
    friend class DevicePrivate;
};
}

#endif
