/*

* 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 container definition - Playlists.

*

*/

#include <QtCore>

#include <hbdocumentloader.h>

#include <hblistview.h>

#include <hbgroupbox.h>

#include <hblabel.h>

#include "mpcollectioncontainerplaylists.h"

#include "mpcollectiondatamodel.h"

#include "mpmpxcollectiondata.h"

#include "mptrace.h"

/*!

    \class MpCollectionContainerPlaylists

    \brief Music Player collection container definition - Playlists.

    'Playlists' collection container implements the interface specified

    by MpCollectionContainer. It provides a layout and widgets for the

    'Playlists' view.

    This container handles the following contexts:

    \li ECollectionContextPlaylists

    \li ECollectionContextPlaylistSongs

    \sa MpCollectionContainer

*/

/*!

 Constructs the collection container.

 This container handles the both the auto playlists and user created playlists.

 */

MpCollectionContainerPlaylists::MpCollectionContainerPlaylists( HbDocumentLoader *loader, QGraphicsItem *parent )

    : MpCollectionListContainer(loader, parent),

      mCurrentPlaylistIndex(0)

{

    TX_LOG

    mCollectionContext = ECollectionContextPlaylists;

}

/*!

 Destructs the collection container.

 */

MpCollectionContainerPlaylists::~MpCollectionContainerPlaylists()

{

    TX_ENTRY

    delete mList;

    TX_EXIT

}

/*!

 Sets the data model for the container.

 */

void MpCollectionContainerPlaylists::setDataModel( MpCollectionDataModel *dataModel )

{

    TX_ENTRY

    MpCollectionListContainer::setDataModel(dataModel);

    if ( mCollectionContext == ECollectionContextPlaylists ) {

        if ( mList ) {

            if ( mCollectionData->count() ) {

                mList->scrollTo( dataModel->index(mCurrentPlaylistIndex, 0) );

            }

        }

    }

    TX_EXIT

}

/*!

 Slot to be called when an item is selected by the user.

*/

void MpCollectionContainerPlaylists::itemActivated( const QModelIndex &index )

{

    if ( mCollectionContext == ECollectionContextPlaylists ) {

        mCurrentPlaylistIndex = index.row();

        TX_ENTRY_ARGS("mCurrentPlaylistIndex=" << mCurrentPlaylistIndex);

    }

    MpCollectionListContainer::itemActivated(index);

    TX_EXIT

}

/*!

 Slot to be called when data model has new data.

 Use cases:

     1) User renames a playlist.

	 2) Song added or removed from playlist.

 */

void MpCollectionContainerPlaylists::dataReloaded()

{

    TX_ENTRY

    MpCollectionListContainer::dataReloaded();

    if ( mCollectionContext == ECollectionContextPlaylistSongs ) {

        // Playlist could have been renamed.

        QString details = mCollectionData->collectionTitle();

        mInfoBar->setHeading(details);

        if ( mCollectionData->count() > 1 ) {

            emit shuffleEnabled(true);

        }

        else {

            emit shuffleEnabled(false);

        }

    }

    TX_EXIT

}

/*!

 Sets up the container by organizing widgets according to its layout.

 \reimp

 */

void MpCollectionContainerPlaylists::setupContainer()

{

    TX_ENTRY_ARGS("mCollectionContext=" << mCollectionContext);

    mDocumentLoader->load(QString(":/docml/musiccollection.docml"), "showInfoBar");

    if ( mCollectionData->count() ) {

        bool ok = false;

        QGraphicsWidget *widget;

        if ( mCollectionContext == ECollectionContextPlaylists ) {

            mDocumentLoader->load(QString(":/docml/musiccollection.docml"), "playlists", &ok);

            if ( !ok ) {

                TX_LOG_ARGS("Error: invalid xml file.");

                Q_ASSERT_X(ok, "MpCollectionContainerPlaylists::setupContainer", "invalid xml file");

            }

            if ( !mList ) {

                widget = mDocumentLoader->findWidget(QString("playlistsList"));

                mList = qobject_cast<HbListView*>(widget);

                initializeList();

            }

            mInfoBar->setHeading(hbTrId("txt_mus_subhead_playlists_1l").arg(mCollectionData->count()));

        }

        else if ( mCollectionContext == ECollectionContextPlaylistSongs ) {

            mDocumentLoader->load(QString(":/docml/musiccollection.docml"), "playlistSongs", &ok);

            if ( !ok ) {

                TX_LOG_ARGS("Error: invalid xml file.");

                Q_ASSERT_X(ok, "MpCollectionContainerPlaylists::setupContainer", "invalid xml file");

            }

            QString details;

            if ( mViewMode == MpCommon::FetchView ) {

                details = hbTrId("txt_mus_subtitle_select_song");

            }

            else {

                details = hbTrId("txt_mus_subhead_1_2l").arg(mCollectionData->collectionTitle()).arg(mCollectionData->count()); 

            }

            mInfoBar->setHeading(details);

        }

        if ( mNoMusic ) {

            delete mNoMusic;

            mNoMusic = 0;

        }

    }

    else {

        mInfoBar->setHeading(hbTrId("txt_mus_subhead_1_2l").arg(mCollectionData->collectionTitle()).arg(0));

        // Call empty list from base class    

        setupEmptyListContainer();

    }

    TX_EXIT

}