/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: Playback Data provider for playback view.

*

*/

#include <qstring>

#include <qpixmap>

#include <thumbnailmanager_qt.h>

#include <thumbnaildata.h>

#include <thumbnailobjectsource.h>

#include "mpsongdata.h"

#include "mptrace.h"

const int KUndefined = -1;

/*!

    \class MpSongData

    \brief Music Player song metadata.

    Song data provide acces to current playing song metadata

*/

/*!

    \fn void albumArtReady()

    This signal is albuma alrt is ready.

 */

/*!

    \fn void playbackInfoChanged()

    This signal is emitted when basic information is available

 */

/*!

    \fn void songDetailInfoChanged()

    This signal is emitted when detail information is available

 */

/*!

    Constructs a new MpSongData.

 */

MpSongData::MpSongData( QObject *parent )

    : QObject( parent ),

      mTitle( NULL ),

      mAlbum( NULL ),

      mArtist( NULL ),

      mComposer( NULL),

      mGenre( NULL ),

      mYear( NULL ),

      mAlbumTrack( NULL ),

      mAlbumArt(),

      mReqId( KUndefined )

{

    TX_ENTRY

    mThumbnailManager = new ThumbnailManager( this );

    mThumbnailManager->setQualityPreference( ThumbnailManager::OptimizeForQuality );

    mThumbnailManager->setThumbnailSize( ThumbnailManager::ThumbnailMedium );

    QObject::connect( mThumbnailManager, SIGNAL( thumbnailReady( QPixmap , void * , int , int ) ),

            this, SLOT( thumbnailReady( QPixmap , void * , int , int  ) ) );

    mDefaultAlbumArt = QPixmap( ":/detailsviewicons/defaultalbumart.png" );

    TX_EXIT

}

/*!

 Constructs a new MpSongData.

 */

MpSongData::~MpSongData()

{

    TX_ENTRY

    if( mThumbnailManager ) {

        delete mThumbnailManager;

    }

    TX_EXIT

}

/*!

 Returns the song album art on \a pixmap.

*/

void MpSongData::albumArt( QPixmap& pixmap )

{

    TX_ENTRY

     if ( !mAlbumArt.isNull() ) {

        pixmap = mAlbumArt;

     }

     else {

         pixmap = QPixmap();

     }

    TX_EXIT

}

/*!

 Returns the song title.

*/

QString MpSongData::title() const

{

    TX_LOG

    return mTitle;

}

/*!

 Returns the song album.

*/

QString MpSongData::album() const

{

    TX_LOG

    return mAlbum;

}

/*!

 Returns the song artist.

*/

QString MpSongData::artist() const

{

    TX_LOG

    return mArtist;

}

/*!

 Returns comment

*/

QString MpSongData::comment() const

{

    TX_LOG

    return mComment;

}

/*!

 Returns the song composer.

*/

QString MpSongData::composer() const

{

    TX_LOG

    return mComposer;

}

/*!

 Returns the song genre.

*/

QString MpSongData::genre() const

{

    TX_LOG

    return mGenre;

}

/*!

 Returns the album track.

*/

QString MpSongData::albumTrack() const

{

    TX_LOG

    return mAlbumTrack;

}

/*!

 Returns link

*/

QString MpSongData::link() const

{

    TX_LOG

    return mLink;

}

/*!

 Returns the release date.

*/

QString MpSongData::year() const

{

    TX_LOG    

    return mYear;

}

/*!

 Sets the song \a title, returns true if the value is new.

*/

bool MpSongData::setTitle( const QString &title )

{

    TX_ENTRY_ARGS( "title =" << title )

    bool change = false;

    if ( title != mTitle ) {

        change = true;

        mTitle = title;

    }

    TX_EXIT

    return change;

}

/*!

 Sets the song \a album, returns true if the value is new.

*/

bool MpSongData::setAlbum( const QString &album )

{

    TX_ENTRY_ARGS( "album =" << album )

    bool change = false;

    if ( album != mAlbum ) {

        change = true;

        mAlbum = album;

    }

    TX_EXIT

    return change;

}

/*!

 Sets the song \a artist, returns true if the value is new.

*/

bool MpSongData::setArtist( const QString &artist )

{

    TX_ENTRY_ARGS( "artist =" << artist )

    bool change = false;

    if ( artist != mArtist ) {

        change = true;

        mArtist = artist;

    }

    TX_EXIT

    return change;

}

/*!

 Sets the song \a comment, returns true if the value is new.

*/

bool MpSongData::setComment( const QString &comment)

{

    TX_ENTRY_ARGS( "comment =" << comment )

    bool change = false;

    if ( comment != mComment ) {

        change = true;

        mComment = comment;

    }

    TX_EXIT

    return change;

}

/*!

 Sets the song \a composer, returns true if the value is new.

*/

bool MpSongData::setComposer( const QString &composer )

{

    TX_ENTRY_ARGS( "composer =" << composer )

    bool change = false;

    if ( composer != mComposer ) {

        change = true;

        mComposer = composer;

    }

    TX_EXIT

    return change;

}

/*!

 Sets the song \a genre, returns true if the value is new.

*/

bool MpSongData::setGenre( const QString &genre )

{

    TX_ENTRY_ARGS( "genre =" << genre )

    bool change = false;

    if ( genre != mGenre ) {

        change = true;

        mGenre = genre;

    }

    TX_EXIT

    return change;

}

/*!

 Sets the song \a date, returns true if the value is new.

*/

bool MpSongData::setYear( int year )

{

    TX_ENTRY_ARGS( "year =" << year )

    bool change = false;

    if ( QString::number(year) != mYear ) {

        change = true;

        if ( year >= 0 && year < 9999 ) {

            mYear = QString::number(year);

        } else {

            mYear = QString();

        }

    }

    TX_EXIT

    return change;

}

/*!

 Sets the \a album track, returns true if the value is new.

*/

bool MpSongData::setAlbumTrack( const QString &track )

{

    TX_ENTRY_ARGS( "track =" << track )

    bool change = false;

    if ( track != mAlbumTrack ) {

        change = true;

        mAlbumTrack = track;

    }

    TX_EXIT

    return change;

}

/*!

 Sets the \a link

*/

void MpSongData::setLink( const QString &link )

{

    TX_ENTRY_ARGS( "Link =" << link )

    mLink = link;

    TX_EXIT

}

/*!

 Sets the song \a albumArtUri.

*/

void MpSongData::setAlbumArtUri( const QString &albumArtUri)

{

    TX_ENTRY_ARGS( "albumArtUri = " << albumArtUri )

    if ( !albumArtUri.isEmpty() ) {

        bool ok = true;

        if ( mReqId != KUndefined ) {

            // There is already an outstanding request. Cancel it first.

            bool ok = mThumbnailManager->cancelRequest( mReqId );

        }

        if ( ok ) {

            mReqId = mThumbnailManager->getThumbnail( albumArtUri );

            if ( mReqId == KUndefined ) {

                // Request failed. Set default album art.

                mAlbumArt = mDefaultAlbumArt;

                emit albumArtReady();

            }

        }

    }

    else {

        // No album art uri. Set default album art.

        mAlbumArt = mDefaultAlbumArt;

        emit albumArtReady();

    }

    TX_EXIT

}

/*!

 Slot to handle the album art thumb.

*/

void MpSongData::thumbnailReady(

        const QPixmap& pixmap,

        void *data,

        int id,

        int error  )

{

    TX_ENTRY

    Q_UNUSED( data );

    if ( error == 0 && mReqId == id ) {

        mReqId = 0;

        mAlbumArt = pixmap;

        emit albumArtReady();

    }

    else {

        mReqId = 0;

        mAlbumArt = mDefaultAlbumArt; 

        emit albumArtReady();

    }

    TX_EXIT

}

/*!

 Emit signal when playback information changed, such as artist, track name

*/

void MpSongData::commitPlaybackInfo()

{

    TX_ENTRY

    emit playbackInfoChanged();

    TX_EXIT

}

/*!

 Emit signal when song detail information changed

*/

void MpSongData::commitSongDetailInfo()

{

    TX_ENTRY

    emit songDetailInfoChanged();

    TX_EXIT

}