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#include "qwmpplaylistcontrol.h"

#include "qwmpevents.h"

#include "qwmpglobal.h"

#include "qwmpmetadata.h"

#include "qwmpplaylist.h"

QWmpPlaylistControl::QWmpPlaylistControl(IWMPCore3 *player, QWmpEvents *events, QObject *parent)

    : QMediaPlaylistControl(parent)

    , m_player(player)

    , m_controls(0)

    , m_playlist(new QWmpPlaylist(player, events))

    , m_playbackMode(QMediaPlaylist::Linear)

{

    m_player->get_controls(&m_controls);

    connect(events, SIGNAL(CurrentItemChange(IDispatch*)),

            this, SLOT(currentItemChangeEvent(IDispatch*)));

}

QWmpPlaylistControl::~QWmpPlaylistControl()

{

    if (m_controls)

        m_controls->Release();

    delete m_playlist;

}

QMediaPlaylistProvider *QWmpPlaylistControl::playlistProvider() const

{

    return m_playlist;

}

bool QWmpPlaylistControl::setPlaylistProvider(QMediaPlaylistProvider *playlist)

{

    Q_UNUSED(playlist);

    return false;

}

int QWmpPlaylistControl::currentIndex() const

{

    int position = 0;

    IWMPMedia *media = 0;

    if (m_controls && m_player->get_currentMedia(&media) == S_OK) {

        position = QWmpMetaData::value(media, QAutoBStr(L"PlaylistIndex")).toInt();

        media->Release();

    }

    return position;

}

void QWmpPlaylistControl::setCurrentIndex(int position)

{

    IWMPPlaylist *playlist = 0;

    if (m_player->get_currentPlaylist(&playlist) == S_OK) {

        IWMPMedia *media = 0;

        if (playlist->get_item(position, &media) == S_OK) {

            m_player->put_currentMedia(media);

            media->Release();

        }

        playlist->Release();

    }

}

int QWmpPlaylistControl::nextIndex(int steps) const

{

    return currentIndex() + steps;

}

int QWmpPlaylistControl::previousIndex(int steps) const

{

    return currentIndex() - steps;

}

void QWmpPlaylistControl::next()

{

    if (m_controls)

        m_controls->next();

}

void QWmpPlaylistControl::previous()

{

    if (m_controls)

        m_controls->previous();

}

QMediaPlaylist::PlaybackMode QWmpPlaylistControl::playbackMode() const

{

    return m_playbackMode;

}

void QWmpPlaylistControl::setPlaybackMode(QMediaPlaylist::PlaybackMode mode)

{

    m_playbackMode = mode;

}

void QWmpPlaylistControl::currentItemChangeEvent(IDispatch *dispatch)

{

    IWMPMedia *media = 0;

    if (dispatch && dispatch->QueryInterface(

            __uuidof(IWMPMedia), reinterpret_cast<void **>(&media)) == S_OK) {

        int index = QWmpMetaData::value(media, QAutoBStr(L"PlaylistIndex")).toInt();

        emit currentIndexChanged(index);

        emit currentMediaChanged(m_playlist->media(index));

    }

}