//
// This file is part of the Marble Virtual Globe.
//
// This program is free software licensed under the GNU LGPL. You can
// find a copy of this license in LICENSE.txt in the top directory of
// the source code.
//
// Copyright 2009      Bastian Holst <bastianholst@gmx.de>
//

// Self
#include "WikipediaPlugin.h"

// Marble
#include "ui_WikipediaConfigWidget.h"
#include "WikipediaModel.h"
#include "MarbleDirs.h"
#include "MarbleDebug.h"
#include "MarbleWidget.h"

// Qt
#include <QPushButton>
#include <QLabel>

using namespace Marble;
/* TRANSLATOR Marble::WikipediaPlugin */

const quint32 maximumNumberOfItems = 99;

WikipediaPlugin::WikipediaPlugin()
    : AbstractDataPlugin( 0 ),
      ui_configWidget( 0 ),
      m_configDialog( 0 )
{
}

WikipediaPlugin::WikipediaPlugin( const MarbleModel *marbleModel )
    : AbstractDataPlugin( marbleModel ),
      m_icon( MarbleDirs::path( "svg/wikipedia_shadow.svg" ) ),
      ui_configWidget( 0 ),
      m_configDialog( 0 ),
      m_showThumbnails( true )
{
    // Plugin is enabled by default
    setEnabled( true );
    // Plugin is not visible by default
    setVisible( false );
    
    connect( this, SIGNAL(settingsChanged(QString)),
             this, SLOT(updateSettings()) );
    connect( this, SIGNAL(changedNumberOfItems(quint32)),
             this, SLOT(checkNumberOfItems(quint32)) );
     
    setSettings( QHash<QString,QVariant>() );
}

WikipediaPlugin::~WikipediaPlugin()
{
    delete ui_configWidget;
    delete m_configDialog;
}
     
void WikipediaPlugin::initialize()
{
    WikipediaModel *model = new WikipediaModel( marbleModel(), this );
    // Ensure that all settings get forwarded to the model.
    setModel( model );
    updateSettings();
}

QString WikipediaPlugin::name() const
{
    return tr( "Wikipedia Articles" );
}

QString WikipediaPlugin::guiString() const
{
    return tr( "&Wikipedia" );
}

QString WikipediaPlugin::nameId() const
{
    return "wikipedia";
}

QString WikipediaPlugin::version() const
{
    return "1.0";
}

QString WikipediaPlugin::description() const
{
    return tr( "Automatically downloads Wikipedia articles and shows them on the right position on the map" );
}

QString WikipediaPlugin::copyrightYears() const
{
    return "2009";
}

QList<PluginAuthor> WikipediaPlugin::pluginAuthors() const
{
    return QList<PluginAuthor>()
            << PluginAuthor( "Bastian Holst", "bastianholst@gmx.de" );
}

QString WikipediaPlugin::aboutDataText() const
{
    return tr( "Geo positions by geonames.org\nTexts by wikipedia.org" );
}

QIcon WikipediaPlugin::icon() const
{
    return m_icon;
}

QDialog *WikipediaPlugin::configDialog()
{
    if ( !m_configDialog ) {
        // Initializing configuration dialog
        m_configDialog = new QDialog();
        ui_configWidget = new Ui::WikipediaConfigWidget;
        ui_configWidget->setupUi( m_configDialog );
        readSettings();
        ui_configWidget->m_itemNumberSpinBox->setRange( 0, maximumNumberOfItems );
        connect( ui_configWidget->m_buttonBox, SIGNAL(accepted()),
                                            SLOT(writeSettings()) );
        connect( ui_configWidget->m_buttonBox, SIGNAL(rejected()),
                                            SLOT(readSettings()) );
        QPushButton *applyButton = ui_configWidget->m_buttonBox->button( QDialogButtonBox::Apply );
        connect( applyButton, SIGNAL(clicked()),
                this,        SLOT(writeSettings()) );
    }
    return m_configDialog;
}

QHash<QString,QVariant> WikipediaPlugin::settings() const
{
    QHash<QString, QVariant> settings = AbstractDataPlugin::settings();

    settings.insert( "numberOfItems", numberOfItems() );
    settings.insert( "showThumbnails", m_showThumbnails );

    return settings;
}

void WikipediaPlugin::setSettings( const QHash<QString,QVariant> &settings )
{
    AbstractDataPlugin::setSettings( settings );

    setNumberOfItems( qMin<int>( maximumNumberOfItems, settings.value( "numberOfItems", 15 ).toInt() ) );
    m_showThumbnails = settings.value( "showThumbnails", true ).toBool();

    readSettings();
    emit settingsChanged( nameId() );
}

bool WikipediaPlugin::eventFilter(QObject *object, QEvent *event)
{
    if ( isInitialized() ) {
        WikipediaModel *wikipediaModel = dynamic_cast<WikipediaModel*>( model() );
        Q_ASSERT( wikipediaModel );
        MarbleWidget* widget = dynamic_cast<MarbleWidget*>( object );
        if ( widget ) {
            wikipediaModel->setMarbleWidget( widget );
        }
    }

    return AbstractDataPlugin::eventFilter( object, event );
}

void WikipediaPlugin::readSettings()
{    
    if ( !m_configDialog )
        return;

    ui_configWidget->m_itemNumberSpinBox->setValue( numberOfItems() );
    ui_configWidget->m_showThumbnailCheckBox->setChecked( m_showThumbnails );
}

void WikipediaPlugin::writeSettings()
{
    setNumberOfItems( ui_configWidget->m_itemNumberSpinBox->value() );
    m_showThumbnails = ui_configWidget->m_showThumbnailCheckBox->isChecked();

    emit settingsChanged( nameId() );
}

void WikipediaPlugin::updateSettings()
{
    AbstractDataPluginModel *abstractModel = model();
    if ( abstractModel != 0 ) {
        abstractModel->setItemSettings( settings() );
    }
    
    WikipediaModel *wikipediaModel = qobject_cast<WikipediaModel*>( model() );
    if ( wikipediaModel ) {
        wikipediaModel->setShowThumbnail( m_showThumbnails );
    }
}

void WikipediaPlugin::checkNumberOfItems( quint32 number ) {
    if ( number > maximumNumberOfItems ) {
        setNumberOfItems( maximumNumberOfItems );
    }

    readSettings();
}

Q_EXPORT_PLUGIN2(WikipediaPlugin, Marble::WikipediaPlugin)

#include "WikipediaPlugin.moc"
