SoundLibraryImportDialog.cpp

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/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
 * Copyright(c) 2008-2025 The hydrogen development team [hydrogen-devel@lists.sourceforge.net]
 *
 * http://www.hydrogen-music.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, see https://www.gnu.org/licenses
 *
 */
 
#include "SoundLibraryImportDialog.h"
#include "SoundLibraryRepositoryDialog.h"
#include "SoundLibraryPanel.h"
 
#include "../Widgets/DownloadWidget.h"
#include "../Widgets/FileDialog.h"
#include "../HydrogenApp.h"
#include "../InstrumentRack.h"
#include "../CommonStrings.h"
 
#include <core/H2Exception.h>
#include <core/Preferences/Preferences.h>
#include <core/Basics/Drumkit.h>
#include <core/Hydrogen.h>
#include <core/Helpers/Filesystem.h>
#include <core/SoundLibrary/SoundLibraryDatabase.h>
 
#include <QTreeWidget>
#include <QDomDocument>
#include <QMessageBox>
#include <QHeaderView>
#include <QCryptographicHash>
 
#ifndef H2CORE_HAVE_QT6
  #include <QTextCodec>
#endif
 
#include <memory>
 
const int max_redirects = 30;
 
SoundLibraryImportDialog::SoundLibraryImportDialog( QWidget* pParent, bool bOnlineImport )
 : QDialog( pParent )
{
        setupUi( this );
 
        // Show and enable maximize button. This is key when enlarging the
        // application using a scaling factor and allows the OS to force its size
        // beyond the minimum and make the scrollbars appear.
        setWindowFlags( windowFlags() | Qt::CustomizeWindowHint |
                                        Qt::WindowMinMaxButtonsHint );
 
        setWindowTitle( tr( "Sound Library import" ) );
 
        QStringList headers;
        headers << tr( "Sound library" ) << tr( "Status" );
        QTreeWidgetItem* header = new QTreeWidgetItem( headers );
        m_pDrumkitTree->setHeaderItem( header );
        m_pDrumkitTree->header()->resizeSection( 0, 200 );
 
        connect( m_pDrumkitTree, SIGNAL( currentItemChanged ( QTreeWidgetItem*, QTreeWidgetItem* ) ), this, SLOT( soundLibraryItemChanged( QTreeWidgetItem*, QTreeWidgetItem* ) ) );
        connect( repositoryCombo, SIGNAL(currentIndexChanged(int)), this, SLOT( onRepositoryComboBoxIndexChanged(int) ));
 
        SoundLibraryNameLbl->setText( "" );
        SoundLibraryInfoLbl->setText( "" );
        DownloadBtn->setEnabled( false );
 
        InstallBtn->setEnabled (false );
 
        updateRepositoryCombo();
 
        if( bOnlineImport){
                 tabWidget->setCurrentIndex( 0 );
        } else {
                 tabWidget->setCurrentIndex( 1 );
        }
}
 
 
 
 
SoundLibraryImportDialog::~SoundLibraryImportDialog()
{
        if ( auto pH2App = HydrogenApp::get_instance() ) {
                pH2App->removeEventListener( this );
        }
}
 
//update combo box
void SoundLibraryImportDialog::updateRepositoryCombo()
{
        H2Core::Preferences* pref = H2Core::Preferences::get_instance();
 
        /*
                Read serverList from config and put servers into the comboBox
        */
 
        if( pref->sServerList.size() == 0 ) {
                pref->sServerList.push_back( "http://hydrogen-music.org/feeds/drumkit_list.php" );
        }
 
        repositoryCombo->clear();
 
        std::list<QString>::const_iterator cur_Server;
        for( cur_Server = pref->sServerList.begin(); cur_Server != pref->sServerList.end(); ++cur_Server ) {
                repositoryCombo->insertItem( 0, *cur_Server );
        }
        reloadRepositoryData();
}
 
void SoundLibraryImportDialog::onRepositoryComboBoxIndexChanged(int i)
{
        UNUSED(i);
 
        if(!repositoryCombo->currentText().isEmpty())
        {
                QString cacheFile = getCachedFilename();
                if( !H2Core::Filesystem::file_exists( cacheFile, true ) )
                {
                        SoundLibraryImportDialog::on_UpdateListBtn_clicked();
                }
                reloadRepositoryData();
        }
}

void SoundLibraryImportDialog::on_EditListBtn_clicked()
{
        SoundLibraryRepositoryDialog repoDialog( this );
        repoDialog.exec();
        updateRepositoryCombo();
}
 
void SoundLibraryImportDialog::clearImageCache()
{
        // Note: After a kit is installed the list refreshes and this gets called to
        // clear the image cache - maybe we want to keep the cache in this case?
        QString cacheDir = H2Core::Filesystem::repositories_cache_dir() ;
        INFOLOG("Deleting cached image files from " + cacheDir );
 
        QDir dir( cacheDir );
        dir.setNameFilters(QStringList() << "*.png");
        dir.setFilter(QDir::Files);
        foreach(QString dirFile, dir.entryList())
        {
                if ( !dir.remove(dirFile) )
                {
                        WARNINGLOG("Error removing image file(s) from cache.");
                }
        }
}
 
QString SoundLibraryImportDialog::getCachedFilename()
{
        QString cacheDir = H2Core::Filesystem::repositories_cache_dir();
        QString serverMd5 = QString(QCryptographicHash::hash(( repositoryCombo->currentText().toLatin1() ),QCryptographicHash::Md5).toHex());
        QString cacheFile = cacheDir + "/" + serverMd5;
        return cacheFile;
}
 
QString SoundLibraryImportDialog::getCachedImageFilename()
{
        QString cacheDir = H2Core::Filesystem::repositories_cache_dir();
        QString kitNameMd5 = QString(QCryptographicHash::hash(( SoundLibraryNameLbl->text().toLatin1() ),QCryptographicHash::Md5).toHex());
        QString cacheFile = cacheDir + "/" + kitNameMd5 + ".png";       
        return cacheFile;
}
 
 
void SoundLibraryImportDialog::writeCachedData(const QString& fileName, const QString& data)
{
        if( data.isEmpty() )
        {
                return;
        }
 
        QFile outFile( fileName );
        if( !outFile.open( QIODevice::WriteOnly | QIODevice::Text ) )
        {
                ERRORLOG( QString("Failed to open file for writing repository cache: %1").arg( fileName ) );
                return;
        }
 
        QTextStream stream( &outFile );
        stream << data;
 
        outFile.close();
}
 
void SoundLibraryImportDialog::writeCachedImage( const QString& imageFile, QPixmap& pixmap )
{
        QString cacheFile = getCachedImageFilename() ;
 
        QFile outFile( cacheFile );
        if( !outFile.open( QIODevice::WriteOnly ) )
        {
                ERRORLOG( QString("Failed to open file for writing repository image cache: %1").arg( imageFile ) );
                return;
        }
        
        pixmap.save(&outFile);
 
        outFile.close();
}
 
QString SoundLibraryImportDialog::readCachedData(const QString& fileName)
{
        QString content;
        QFile inFile( fileName );
        if( !inFile.open( QIODevice::ReadOnly | QIODevice::Text ) )
        {
                ERRORLOG( QString("Failed to open file for reading: %1").arg( fileName ) );
                return content;
        }
 
        QDomDocument document;
        if( !document.setContent( &inFile ) )
        {
                inFile.close();
                return content;
        }
        inFile.close();
 
        content = document.toString();
 
        return content;
}
 
QString SoundLibraryImportDialog::readCachedImage( const QString& imageFile )
{
        QString cacheFile = getCachedImageFilename() ;
 
        QFile file( cacheFile );
        if( !file.exists() )
        {
                // no image in cache, just return NULL
                return nullptr;
        }
        
        return cacheFile;
}
 
void SoundLibraryImportDialog::reloadRepositoryData()
{
        QString sDrumkitXML;
        QString cacheFile = getCachedFilename();
 
        if(H2Core::Filesystem::file_exists(cacheFile,true))
        {
                sDrumkitXML = readCachedData(cacheFile);
        }
 
        m_soundLibraryList.clear();
        QDomDocument dom;
        dom.setContent( sDrumkitXML );
        QDomNode drumkitNode = dom.documentElement().firstChild();
        while ( !drumkitNode.isNull() ) {
                if( !drumkitNode.toElement().isNull() ) {
 
                        if ( drumkitNode.toElement().tagName() == "drumkit" || drumkitNode.toElement().tagName() == "song" || drumkitNode.toElement().tagName() == "pattern" ) {
 
                                H2Core::SoundLibraryInfo soundLibInfo;
 
                                if ( drumkitNode.toElement().tagName() =="song" ) {
                                        soundLibInfo.setType( "song" );
                                }
 
                                if ( drumkitNode.toElement().tagName() =="drumkit" ) {
                                        soundLibInfo.setType( "drumkit" );
                                }
 
                                if ( drumkitNode.toElement().tagName() =="pattern" ) {
                                        soundLibInfo.setType( "pattern" );
                                }
 
                                QDomElement nameNode = drumkitNode.firstChildElement( "name" );
                                if ( !nameNode.isNull() ) {
                                        soundLibInfo.setName( nameNode.text() );
                                }
 
                                QDomElement urlNode = drumkitNode.firstChildElement( "url" );
                                if ( !urlNode.isNull() ) {
                                        soundLibInfo.setUrl( urlNode.text() );
                                }
 
                                QDomElement infoNode = drumkitNode.firstChildElement( "info" );
                                if ( !infoNode.isNull() ) {
                                        soundLibInfo.setInfo( infoNode.text() );
                                }
 
                                QDomElement authorNode = drumkitNode.firstChildElement( "author" );
                                if ( !authorNode.isNull() ) {
                                        soundLibInfo.setAuthor( authorNode.text() );
                                }
 
                                QDomElement licenseNode = drumkitNode.firstChildElement( "license" );
                                if ( !licenseNode.isNull() ) {
                                        soundLibInfo.setLicense( licenseNode.text() );
                                }
 
                                QDomElement imageNode = drumkitNode.firstChildElement( "image" );
                                if ( !imageNode.isNull() ) {
                                        soundLibInfo.setImage( imageNode.text() );
                                }
 
                                QDomElement imageLicenseNode = drumkitNode.firstChildElement( "imageLicense" );
                                if ( !imageLicenseNode.isNull() ) {
                                        soundLibInfo.setImageLicense( imageLicenseNode.text() );
                                }
 
 
                                m_soundLibraryList.push_back( soundLibInfo );
                        }
                }
                drumkitNode = drumkitNode.nextSibling();
        }
 
        updateSoundLibraryList();
 
}

void SoundLibraryImportDialog::on_UpdateListBtn_clicked()
{
        QApplication::setOverrideCursor(Qt::WaitCursor);
        QString downloadUrl = repositoryCombo->currentText();
        QString sDrumkitXML;
 
        for (int ii=1; ii <= max_redirects; ii++) {
                DownloadWidget drumkitList( this, tr( "Updating SoundLibrary list..." ), downloadUrl);
                drumkitList.exec();
 
                if (!drumkitList.get_redirect_url().isEmpty()) {
                        downloadUrl = drumkitList.get_redirect_url().toEncoded();
                } else if (drumkitList.get_error().isEmpty()) {
                        sDrumkitXML = drumkitList.get_xml_content();
                        break;
                }
 
                // Only show a popup with the error messages once after
                // attempting all redirects. We assume in here that the error
                // does stay the same for all redirects.
                if ( ii == max_redirects ) {
                        QMessageBox::warning( this, "Hydrogen", drumkitList.get_error() );
                }
                        
        }
 
        /*
         * Hydrogen creates the following cache hierarchy to cache
         * the content of server lists:
         *
         * CACHE_DIR
         *     +-----repositories
         *         +-----serverlist_$(md5(SERVER_NAME))
         */
 
 
        QString cacheFile = getCachedFilename();
 
 
        writeCachedData(cacheFile, sDrumkitXML);
 
        reloadRepositoryData();
        QApplication::restoreOverrideCursor();
}
 
 
 
 
void SoundLibraryImportDialog::updateSoundLibraryList()
{
        // build the sound library tree
        m_pDrumkitTree->clear();
 
        m_pDrumkitsItem = new QTreeWidgetItem( m_pDrumkitTree );
        m_pDrumkitsItem->setText( 0, tr( "Drumkits" ) );
        m_pDrumkitsItem->setExpanded( true );
 
 
        m_pSongItem = new QTreeWidgetItem( m_pDrumkitTree );
        m_pSongItem->setText( 0, tr( "Songs" ) );
        m_pSongItem->setExpanded( true );
 
        m_pPatternItem = new QTreeWidgetItem( m_pDrumkitTree );
        m_pPatternItem->setText( 0, tr( "Patterns" ) );
        m_pPatternItem->setExpanded( true );
 
        for ( uint i = 0; i < m_soundLibraryList.size(); ++i ) {
                QString sLibraryName = m_soundLibraryList[ i ].getName();
 
                QTreeWidgetItem* pDrumkitItem = nullptr;
 
                if ( m_soundLibraryList[ i ].getType() == "song" ) {
                        pDrumkitItem = new QTreeWidgetItem( m_pSongItem );
                } else if ( m_soundLibraryList[ i ].getType() == "drumkit" ) {
                        pDrumkitItem = new QTreeWidgetItem( m_pDrumkitsItem );
                } else if ( m_soundLibraryList[ i ].getType() == "pattern" ) {
                        pDrumkitItem = new QTreeWidgetItem( m_pPatternItem );
                }
 
                if( pDrumkitItem ) {
                        if ( isSoundLibraryItemAlreadyInstalled( m_soundLibraryList[ i ]  ) ) {
                                pDrumkitItem->setText( 0, sLibraryName );
                                pDrumkitItem->setText( 1, tr( "Installed" ) );
                        }
                        else {
                                pDrumkitItem->setText( 0, sLibraryName );
                                pDrumkitItem->setText( 1, tr( "New" ) );
                        }
                }
        }
 
        // Also clear out the image cache
        clearImageCache();
 
}
 
void SoundLibraryImportDialog::soundLibraryChangedEvent() {
        updateSoundLibraryList();
}
 

bool SoundLibraryImportDialog::isSoundLibraryItemAlreadyInstalled( H2Core::SoundLibraryInfo sInfo )
{
        // check if the filename matches with an already installed soundlibrary directory.
        // The filename used in the Soundlibrary URL must be the same of the unpacked directory.
        // E.g: V-Synth_VariBreaks.h2drumkit must contain the V-Synth_VariBreaks directory once unpacked.
        // Many drumkit are broken now (wrong filenames) and MUST be fixed!
 
        QString sName = QFileInfo( sInfo.getUrl() ).fileName();
        sName = sName.left( sName.lastIndexOf( "." ) );
 
        if ( sInfo.getType() == "drumkit" ) {
                if ( H2Core::Filesystem::drumkit_exists(sName) ) {
                        return true;
                }
        }
 
        if ( sInfo.getType() == "pattern" ) {
                return H2Core::Hydrogen::get_instance()->getSoundLibraryDatabase()
                        ->isPatternInstalled( sInfo.getName() );
        }
 
        if ( sInfo.getType() == "song" ) {
                if ( H2Core::Filesystem::song_exists(sName) ) {
                        return true;
                }
        }
 
        return false;
}
 
void SoundLibraryImportDialog::loadImage(QString img )
{
        QPixmap pixmap;
        pixmap.load( img ) ;
 
        writeCachedImage( drumkitImageLabel->text(), pixmap );
        showImage( pixmap );
}
 
void SoundLibraryImportDialog::showImage( QPixmap pixmap )
{
        int x = (int) drumkitImageLabel->size().width();
        int y = drumkitImageLabel->size().height();
        float labelAspect = (float) x / y;
        float imageAspect = (float) pixmap.width() / pixmap.height();
 
        if ( ( x < pixmap.width() ) || ( y < pixmap.height() ) )
        {
                if ( labelAspect >= imageAspect )
                {
                        // image is taller or the same as label frame
                        pixmap = pixmap.scaledToHeight( y );
                }
                else
                {
                        // image is wider than label frame
                        pixmap = pixmap.scaledToWidth( x );
                }
        }
        drumkitImageLabel->setPixmap( pixmap ); // TODO: Check if valid!
 
}
 
 
void SoundLibraryImportDialog::soundLibraryItemChanged( QTreeWidgetItem* current, QTreeWidgetItem* previous  )
{
        UNUSED( previous );
        if ( current ) {
 
                QString selected = current->text(0);
                for ( uint i = 0; i < m_soundLibraryList.size(); ++i ) {
                        if ( m_soundLibraryList[ i ].getName() == selected ) {
                                H2Core::SoundLibraryInfo info = m_soundLibraryList[ i ];
 
                                //bool alreadyInstalled = isSoundLibraryAlreadyInstalled( info.m_sURL );
 
                                SoundLibraryNameLbl->setText( info.getName() );
 
                                if( info.getType() == "pattern" ){
                                        SoundLibraryInfoLbl->setText("");
                                } else {
                                        SoundLibraryInfoLbl->setText( info.getInfo() );
                                }
 
                                AuthorLbl->setText( tr( "Author: %1" ).arg( info.getAuthor() ) );
 
                                LicenseLbl->setText( tr( "Drumkit License: %1" )
                                                                         .arg( info.getLicense().getLicenseString() ) );
 
                                ImageLicenseLbl->setText( tr("Image License: %1" )
                                                                                  .arg( info.getImageLicense().getLicenseString() ) );
 
                                // Load the drumkit image
                                // Clear any image first
                                drumkitImageLabel->setPixmap( QPixmap() );
                                drumkitImageLabel->setText( info.getImage() );
 
                                if ( info.getImage().length() > 0 ) {
                                        if ( isSoundLibraryItemAlreadyInstalled( info ) ) {
                                                // get image file from local disk
                                                QString sName = QFileInfo( info.getUrl() ).fileName();
                                                sName = sName.left( sName.lastIndexOf( "." ) );
 
                                                auto pDrumkit = H2Core::Hydrogen::get_instance()
                                                        ->getSoundLibraryDatabase()->getDrumkit( info.getPath() );
                                                if ( pDrumkit != nullptr ) {
                                                        // get the image from the local filesystem
                                                        QPixmap pixmap ( pDrumkit->get_path() + "/" + pDrumkit->get_image() );
                                                        INFOLOG("Loaded image " + pDrumkit->get_image() + " from local filesystem");
                                                        showImage( pixmap );
                                                }
                                                else {
                                                        ___ERRORLOG ( "Error loading the drumkit" );
                                                }
 
                                        }
                                        else {
                                                // Try from the cache
                                                QString cachedFile = readCachedImage( info.getImage() );
                                                
                                                if ( cachedFile.length() > 0 ) {
                                                        QPixmap pixmap ( cachedFile );
                                                        showImage( pixmap );
                                                        INFOLOG( "Loaded image " + info.getImage() + " from cache (" + cachedFile + ")" );
                                                }
                                                else {
                                                        // Get the drumkit's directory name from URL
                                                        //
                                                        // Example: if the server repo URL is: http://www.hydrogen-music.org/feeds/drumkit_list.php
                                                        // and the image name from the XML is Roland_TR-808_drum_machine.jpg
                                                        // the URL for the image will be: http://www.hydrogen-music.org/feeds/images/Roland_TR-808_drum_machine.jpg
 
                                                        if ( info.getImage().length() > 0 ) {
                                                                QString sImageUrl;
                                                                QString sLocalFile;
                                                                
                                                                sImageUrl = repositoryCombo->currentText().left( repositoryCombo->currentText().lastIndexOf( QString( "/" )) + 1 ) + info.getImage() ;
                                                                sLocalFile = QDir::tempPath() + "/" + QFileInfo( sImageUrl ).fileName();
 
                                                                DownloadWidget dl( this, tr( "" ), sImageUrl, sLocalFile );
                                                                dl.exec();
 
                                                                loadImage( sLocalFile );
                                                                // Delete the temporary file
                                                                QFile::remove( sLocalFile );
                                                        }
                                                }
                                        }
                                }
                                
                                DownloadBtn->setEnabled( true );
                                return;
                        }
                }
        }
 
        SoundLibraryNameLbl->setText( "" );
        SoundLibraryInfoLbl->setText( "" );
        AuthorLbl->setText( "" );
        DownloadBtn->setEnabled( false );
}
 
 
 
void SoundLibraryImportDialog::on_DownloadBtn_clicked()
{
        QApplication::setOverrideCursor(Qt::WaitCursor);
        QString selected = m_pDrumkitTree->currentItem()->text(0);
 
        for ( uint i = 0; i < m_soundLibraryList.size(); ++i ) {
                if ( m_soundLibraryList[ i ].getName() == selected ) {
                        // Download the sound library
                        QString sURL = m_soundLibraryList[ i ].getUrl();
                        QString sType = m_soundLibraryList[ i ].getType();
                        QString sLocalFile;
 
                        if( sType == "drumkit") {
                                sLocalFile = QDir::tempPath() + "/" + QFileInfo( sURL ).fileName();
                        }
 
                        if( sType == "song") {
                                sLocalFile = H2Core::Filesystem::songs_dir() + QFileInfo( sURL ).fileName();
                        }
 
                        if( sType == "pattern") {
                                sLocalFile = H2Core::Filesystem::patterns_dir() + QFileInfo( sURL ).fileName();
                        }
 
                        bool Error = false;
 
                        for ( int i = 0; i < max_redirects; ++i ) {
                                DownloadWidget dl( this, tr( "Downloading SoundLibrary..." ), sURL, sLocalFile );
                                dl.exec();
 
                                QUrl redirect_url = dl.get_redirect_url();
                                if (redirect_url.isEmpty() ) {
                                        // ok, we have all data
                                        Error = !dl.get_error().isEmpty();
                                        break;
                                }
                                else {
                                        sURL = redirect_url.toEncoded();
                                        Error = !dl.get_error().isEmpty();
                                }
                        }
 
 
                        //No 'else', error message has been already displayed by DL widget
                        if(!Error)
                        {
                                // install the new soundlibrary
                                try {
                                        if ( sType == "drumkit" ) {
                                                H2Core::Drumkit::install( sLocalFile );
                                                QApplication::restoreOverrideCursor();
                                                QMessageBox::information( this, "Hydrogen", QString( tr( "SoundLibrary imported in %1" ) ).arg( H2Core::Filesystem::usr_data_path() ) );
                                        }
 
                                        if ( sType == "song" || sType == "pattern") {
                                                QApplication::restoreOverrideCursor();
                                        }
                                }
                                catch( H2Core::H2Exception ex ) {
                                        QApplication::restoreOverrideCursor();
                                        QMessageBox::warning( this, "Hydrogen", tr( "An error occurred importing the SoundLibrary."  ) );
                                }
                        }
                        else
                        {
                                QApplication::restoreOverrideCursor();
                        }
 
                        QApplication::setOverrideCursor(Qt::WaitCursor);
                        // remove the downloaded files..
                        if( sType == "drumkit" ) {
                                QDir dir;
                                dir.remove( sLocalFile );
                        }
 
                        // update the drumkit list
                        H2Core::Hydrogen::get_instance()->getSoundLibraryDatabase()->update();
                        QApplication::restoreOverrideCursor();
                        return;
                }
        }
}
 
 
 
 
void SoundLibraryImportDialog::on_BrowseBtn_clicked()
{
        QString sPath = H2Core::Preferences::get_instance()->getLastImportDrumkitDirectory();
        if ( ! H2Core::Filesystem::dir_readable( sPath, false ) ){
                sPath = QDir::homePath();
        }
 
        FileDialog fd(this);
        fd.setAcceptMode( QFileDialog::AcceptOpen );
        fd.setFileMode(QFileDialog::ExistingFile);
        fd.setNameFilter( "Hydrogen drumkit (*.h2drumkit)" );
        fd.setDirectory( sPath );
 
        fd.setWindowTitle( tr( "Import drumkit" ) );
 
        QString filename = "";
        if (fd.exec() == QDialog::Accepted) {
                filename = fd.selectedFiles().first();
        }
 
        if (filename != "") {
                SoundLibraryPathTxt->setText( filename );
                H2Core::Preferences::get_instance()->setLastImportDrumkitDirectory( fd.directory().absolutePath() );
                InstallBtn->setEnabled ( true );
        }
}
 
 
 
 
void SoundLibraryImportDialog::on_InstallBtn_clicked()
{
        QApplication::setOverrideCursor(Qt::WaitCursor);
 
        QString sError = tr( "An error occurred importing the SoundLibrary."  );
        
        try {
                QString sImportedPath;
                bool bEncodingIssues;
                if ( ! H2Core::Drumkit::install(
                                 SoundLibraryPathTxt->text(), "", &sImportedPath,
                                 &bEncodingIssues, false ) ) {
                        QApplication::restoreOverrideCursor();
                        
#ifndef H2CORE_HAVE_QT6
                        // Check whether encoding might be the problem in here.
                        auto pCodec = QTextCodec::codecForLocale();
                        if ( ! pCodec->canEncode( SoundLibraryPathTxt->text() ) ) {
                                QMessageBox::critical(
                                        this, "Hydrogen", QString( "%1\n\n%2\n\n%3: [%4]" )
                                        .arg( sError ).arg( SoundLibraryPathTxt->text() )
                                        .arg( HydrogenApp::get_instance()->getCommonStrings()
                                                  ->getEncodingError() )
                                        .arg( QString( pCodec->name() ) ) );
                        }
                        else {
                                QMessageBox::critical( this, "Hydrogen", sError );
                        }
#else
                QMessageBox::critical( this, "Hydrogen", sError );
#endif
 
                        return;
                }
 
                // update the drumkit list
                H2Core::Hydrogen::get_instance()->getSoundLibraryDatabase()->update();
                QApplication::restoreOverrideCursor();
                if ( ! bEncodingIssues ) {
                        QMessageBox::information( this, "Hydrogen",
                                                                          QString( tr( "SoundLibrary imported in %1" )
                                                                                           .arg( sImportedPath ) ) );
                }
                else {
                        QMessageBox::warning(
                                this, "Hydrogen",
                                QString( tr( "SoundLibrary imported in %1" )
                                                 .arg( sImportedPath ) )
                                .append( tr( "\nBut there were encoding issues.\n\nPlease set your system's locale to UTF-8!" ) ) );
                }
        }
        catch( H2Core::H2Exception ex ) {
                QApplication::restoreOverrideCursor();
                QMessageBox::warning( this, "Hydrogen", sError );
        }
}
 
 
 
void SoundLibraryImportDialog::on_close_btn_clicked()
{
        accept();
}