/*****************************************************************************
 * playlist.cpp : Custom widgets for the playlist
 ****************************************************************************
 * Copyright © 2007-2010 the VideoLAN team
 * $Id: 5368bf0eb75777c50e97107fd561ed469a3e3c29 $
 *
 * Authors: Clément Stenac <zorglub@videolan.org>
 *          Jean-Baptiste Kempf <jb@videolan.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * ( at your option ) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "components/playlist/standardpanel.hpp"
#include "components/playlist/selector.hpp"
#include "components/playlist/playlist.hpp"

#include "input_manager.hpp" /* art signal */
#include "main_interface.hpp" /* DropEvent TODO remove this*/

#include <QGroupBox>

#include <iostream>
/**********************************************************************
 * Playlist Widget. The embedded playlist
 **********************************************************************/

PlaylistWidget::PlaylistWidget( intf_thread_t *_p_i, QWidget *_par )
               : QSplitter( _par ), p_intf ( _p_i )
{
    setContentsMargins( 3, 3, 3, 3 );

    /* Left Part and design */
    leftSplitter = new QSplitter( Qt::Vertical, this );

    /* Source Selector */
    selector = new PLSelector( this, p_intf );

    QLabel *selLabel = new QLabel( qtr( "Media Browser" ) );
    QFont font;
    font.setBold( true );
    selLabel->setFont( font );
    selLabel->setMargin( 5 );

    QVBoxLayout *selBox = new QVBoxLayout();
    selBox->setContentsMargins(0,0,0,0);
    selBox->setSpacing( 0 );
    selBox->addWidget( selLabel );
    selBox->addWidget( selector );

    QWidget *mediaBrowser = new QWidget();
    mediaBrowser->setLayout( selBox );
    leftSplitter->addWidget( mediaBrowser );

    /* Create a Container for the Art Label
       in order to have a beautiful resizing for the selector above it */
    QWidget *artContainer = new QWidget;
    QHBoxLayout *artContLay = new QHBoxLayout( artContainer );
    artContLay->setMargin( 0 );
    artContLay->setSpacing( 0 );
    artContainer->setMaximumHeight( 128 );

    /* Art label */
    art = new ArtLabel( artContainer, p_intf );
    art->setToolTip( qtr( "Double click to get media information" ) );

    CONNECT( THEMIM->getIM(), artChanged( QString ),
             art, showArtUpdate( const QString& ) );

    artContLay->addWidget( art, 1 );

    leftSplitter->addWidget( artContainer );

    /* Initialisation of the playlist */
    playlist_t * p_playlist = THEPL;
    PL_LOCK;
    playlist_item_t *p_root = THEPL->p_playing;

    PL_UNLOCK;

    rightPanel = new StandardPLPanel( this, p_intf, THEPL, p_root );

    /* Connect the activation of the selector to a redefining of the PL */
    DCONNECT( selector, activated( playlist_item_t * ),
              rightPanel, setRoot( playlist_item_t * ) );

    rightPanel->setRoot( p_root );

    /* Add the two sides of the QSplitter */
    addWidget( leftSplitter );
    addWidget( rightPanel );

    QList<int> sizeList;
    sizeList << 180 << 420 ;
    setSizes( sizeList );
    //setSizePolicy( QSizePolicy::Preferred, QSizePolicy::Expanding );
    setStretchFactor( 0, 0 );
    setStretchFactor( 1, 3 );
    leftSplitter->setMaximumWidth( 250 );
    setCollapsible( 1, false );

    /* In case we want to keep the splitter informations */
    // components shall never write there setting to a fixed location, may infer
    // with other uses of the same component...
    getSettings()->beginGroup("Playlist");
    restoreState( getSettings()->value("splitterSizes").toByteArray());
    leftSplitter->restoreState( getSettings()->value("leftSplitterGeometry").toByteArray() );
    getSettings()->endGroup();

    setAcceptDrops( true );
    setWindowTitle( qtr( "Playlist" ) );
    setWindowRole( "vlc-playlist" );
    setWindowIcon( QApplication::windowIcon() );
}

PlaylistWidget::~PlaylistWidget()
{
    getSettings()->beginGroup("Playlist");
    getSettings()->setValue( "splitterSizes", saveState() );
    getSettings()->setValue( "leftSplitterGeometry", leftSplitter->saveState() );
    getSettings()->endGroup();
    msg_Dbg( p_intf, "Playlist Destroyed" );
}

void PlaylistWidget::dropEvent( QDropEvent *event )
{
    if( p_intf->p_sys->p_mi )
        p_intf->p_sys->p_mi->dropEventPlay( event, false );
}
void PlaylistWidget::dragEnterEvent( QDragEnterEvent *event )
{
    event->acceptProposedAction();
}

void PlaylistWidget::closeEvent( QCloseEvent *event )
{
    if( THEDP->isDying() )
    {
        p_intf->p_sys->p_mi->playlistVisible = true;
        event->accept();
    }
    else
    {
        p_intf->p_sys->p_mi->playlistVisible = false;
        hide();
        event->ignore();
    }
}

void PlaylistWidget::forceHide()
{
    leftSplitter->hide();
    rightPanel->hide();
    updateGeometry();
}

void PlaylistWidget::forceShow()
{
    leftSplitter->show();
    rightPanel->show();
    updateGeometry();
}
