/*

* 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: Music Player collection song scanner.

*

*/

#include <hbprogressnote.h>

#include "mpcollectionsongscanner.h"

#include "mpmpxframeworkwrapper.h"

#include "mptrace.h"

/*!

    \class MpCollectionSongScanner

    \brief Music Player collection song scanner.

    Song scanner interfaces with MPX Harvesting Framework to harvest

    music files in the device.

*/

/*!

 \fn void scanEnd()

 This signal is emitted when scanning is ended.

 \sa scan()

*/

/*!

 Constructs the collection song scanner.

 */

MpCollectionSongScanner::MpCollectionSongScanner( MpMpxFrameworkWrapper *wrapper, QObject *parent )

    : QObject(parent),

      mMpxWrapper(wrapper),

      mScanning(false),

      mScanProgressNote(0)

{

    TX_ENTRY

    connect( mMpxWrapper, SIGNAL(scanStarted()), this, SLOT(handleScanStarted()) );

    connect( mMpxWrapper, SIGNAL(scanEnded()), this, SLOT(handleScanEnded()) );

    connect( mMpxWrapper, SIGNAL(scanCountChanged(int)), this, SLOT(handleScanCountChanged(int)) );

    TX_EXIT

}

/*!

 Destructs the collection song scanner.

 */

MpCollectionSongScanner::~MpCollectionSongScanner()

{

    TX_ENTRY

    if ( mScanProgressNote ) {

        delete mScanProgressNote;

    }

    TX_EXIT

}

/*!

 Initiates song scanning.

 */

void MpCollectionSongScanner::scan()

{

    mScanning = true;

    mMpxWrapper->scan();

}

/*!

 Returns true if scanning is ongoing.

 */

bool MpCollectionSongScanner::isScanning()

{

    return mScanning;

}

/*!

 Cancels ongoing song scanning, if any.

 \sa scan()

 */

void MpCollectionSongScanner::cancelScan()

{

    if ( mScanning ) {

        mScanning = false;

        mMpxWrapper->cancelScan();

    }

}

/*!

 Slot called upon notification from MPX Harvesting FW indicating start of

 scanning process.

 */

void MpCollectionSongScanner::handleScanStarted()

{

    if ( !mScanProgressNote ) {

        mScanProgressNote = new HbProgressNote(HbProgressNote::WaitNote);

        connect(mScanProgressNote, SIGNAL(cancelled()), this, SLOT(cancelScan()));

    }

    mScanProgressNote->setText( QString("Scanning...") );

    mScanProgressNote->show();

}

/*!

 Slot called upon notification from MPX Harvesting FW indicating end of

 scanning process.

 */

void MpCollectionSongScanner::handleScanEnded()

{

    if ( mScanning ) {

        mScanning = false;

        mScanProgressNote->cancel();

    }

    emit scanEnded();

}

/*!

 Slot called upon notification from MPX Harvesting FW indicating the number of

 songs scanned so far.

 */

void MpCollectionSongScanner::handleScanCountChanged(int count)

{

    QString added;

    added.setNum(count);

    added.append(" file(s) added.");

    mScanProgressNote->setText(added);

}