- don't enable the play button if switching to the playlist tab and the

  playlist is empty
- don't crash when starting to play and no item is selected in the
  playlist. instead select the first item then.

2 files changed, 11 insertions, 1 deletions

diff --git a/noncore/multimedia/opieplayer2/playlistselection.h b/noncore/multimedia/opieplayer2/playlistselection.h
index d10bc82..9cc4e30 100644
--- a/noncore/multimedia/opieplayer2/playlistselection.h
+++ b/noncore/multimedia/opieplayer2/playlistselection.h
@@ -1,63 +1,65 @@
 /**********************************************************************
 ** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
 **
 ** This file is part of the Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 #ifndef PLAY_LIST_SELECTION_H
 #define PLAY_LIST_SELECTION_H
 
 #include <qlist.h>
 #include <qlistview.h>
 #include <qpe/applnk.h>
 #include <qpe/config.h>
 
 class PlayListSelection : public QListView {
     Q_OBJECT
 public:
     PlayListSelection( QWidget *parent, const char *name=0 );
     ~PlayListSelection();
 
     const DocLnk *current(); // retrieve the current playlist entry (media file link)
 public slots:
     void addToSelection( const DocLnk & ); // Add a media file to the playlist
     void removeSelected();   // Remove a media file from the playlist
     void moveSelectedUp();   // Move the media file up the playlist so it is played earlier
     void moveSelectedDown(); // Move the media file down the playlist so it is played later
   void unSelect();
   void writeCurrent( Config &);
   void setSelectedItem( const QString & );
     bool prev();
     bool next();
     bool first();
     bool last();
 
+    bool isEmpty() const { return childCount() == 0; }
+
 protected:
     virtual void contentsMouseMoveEvent(QMouseEvent *);
 /* #ifdef USE_PLAYLIST_BACKGROUND */
     virtual void drawBackground( QPainter *p, const QRect &r );
     virtual void paintEmptyArea( QPainter *p, const QRect &r ) { drawBackground( p, r ); };
 /* #endif */
 
 private:
     QList<DocLnk>   selectedList;
     const DocLnk    *lnk;
 };
 
 
 #endif // PLAY_LIST_SELECTION_H
 
 
diff --git a/noncore/multimedia/opieplayer2/playlistwidget.cpp b/noncore/multimedia/opieplayer2/playlistwidget.cpp
index f53def6..b08204e 100644
--- a/noncore/multimedia/opieplayer2/playlistwidget.cpp
+++ b/noncore/multimedia/opieplayer2/playlistwidget.cpp
@@ -165,658 +165,666 @@ PlayListWidget::PlayListWidget( QWidget* parent, const char* name, WFlags fl )
     loadList(DocLnk(  currentPlaylist ) );
 }
 
 
 PlayListWidget::~PlayListWidget() {
     delete d;
 }
 
 
 void PlayListWidget::initializeStates() {
     d->tbPlay->setOn( mediaPlayerState->isPlaying() );
     d->tbLoop->setOn( mediaPlayerState->isLooping() );
     d->tbShuffle->setOn( mediaPlayerState->isShuffled() );
     d->playListFrame->show();
 }
 
 void PlayListWidget::writeDefaultPlaylist() {
 
     Config config( "OpiePlayer" );
     config.setGroup( "PlayList" );
     QString filename=QPEApplication::documentDir() + "/default.m3u";
     QString currentString = config.readEntry( "CurrentPlaylist", filename);
     if( currentString == filename) {
       Om3u *m3uList;
       //    qDebug("<<<<<<<<<<<<<default>>>>>>>>>>>>>>>>>>>");
       if( d->selectedFiles->first() ) {
         m3uList = new Om3u(filename, IO_ReadWrite | IO_Truncate);
         do {
           //        qDebug(d->selectedFiles->current()->file());
           m3uList->add( d->selectedFiles->current()->file() );
         }
         while ( d->selectedFiles->next() );
 
         m3uList->write();
         m3uList->close();
         if(m3uList) delete m3uList;
         
       }
     }
 }
 
 void PlayListWidget::addToSelection( const DocLnk& lnk ) {
     d->setDocumentUsed = FALSE;
     if( QFileInfo( lnk.file() ).exists() ||
         lnk.file().left(4) == "http" ) {
         d->selectedFiles->addToSelection( lnk );
     }
 //          writeCurrentM3u();          
 }
 
 
 void PlayListWidget::clearList() {
     while ( first() ) {
         d->selectedFiles->removeSelected();
     }
 }
 
 void PlayListWidget::viewPressed( int mouse, QListViewItem *, const QPoint& , int) {
     switch (mouse) {
     case 1:
         break;
     case 2:
     {
         QPopupMenu  m;
         m.insertItem( tr( "Play Selected" ), this, SLOT( playSelected() ));
         m.insertItem( tr( "Add to Playlist" ), this, SLOT( addSelected() ));
         m.exec( QCursor::pos() );
     }
         break;
     }
 }
 
 
 void PlayListWidget::playlistViewPressed( int mouse, QListViewItem *, const QPoint& , int ) {
     switch (mouse) {
     case 1:
         break;
     case 2:
     {
         QPopupMenu  m;
         m.insertItem( tr( "Play" ), this, SLOT( playSelected() ));
         m.insertItem( tr( "Remove" ), this, SLOT( removeSelected() ));
         m.exec( QCursor::pos() );
     }
     break;
     }
 }
 
 
 void PlayListWidget::addAllToList() {
 
 //   QTime t;
 //   t.start();
 
   if(!audioScan) {
     if(audioView->childCount() < 1)
       populateAudioView();
   }
 
   QListViewItemIterator audioIt( audioView );
   DocLnk lnk;
   QString filename;
   // iterate through all items of the listview
   for ( ; audioIt.current(); ++audioIt ) {
     filename = audioIt.current()->text(3);
     lnk.setName( QFileInfo(filename).baseName() ); //sets name
     lnk.setFile( filename ); //sets file name
     d->selectedFiles->addToSelection(  lnk);
   }      
 
   if(!videoScan) {
     if(videoView->childCount() < 1)
       populateVideoView();
   }
 
   QListViewItemIterator videoIt( videoView );
   for ( ; videoIt.current(); ++videoIt ) {
     filename = videoIt.current()->text(3);
     lnk.setName( QFileInfo(filename).baseName() ); //sets name
     lnk.setFile( filename ); //sets file name
     d->selectedFiles->addToSelection(  lnk);
   }      
 
   //      d->selectedFiles->addToSelection(  );
       //      if ( it.current()->isSelected() )
       //        lst->append( audioIt.current() );
   //    }
     
 
 //       if(!audioScan)
 //       scanForAudio();
 //     if(!videoScan) 
 //       scanForVideo();
 
 //      DocLnkSet filesAll;
 //      Global::findDocuments(&filesAll, "video/*;"+audioMimes);
 //      QListIterator<DocLnk> Adit( filesAll.children() );
 //      for ( ; Adit.current(); ++Adit ) {
 //          if( QFileInfo( Adit.current()->file() ).exists() ) {
 //              d->selectedFiles->addToSelection( **Adit );
 //          }
 //      }
 
   //     qDebug("elapsed time %d", t.elapsed() );
 
     tabWidget->setCurrentPage(0);
     
     writeCurrentM3u();
     d->selectedFiles->first();
 }
 
 
 void PlayListWidget::addAllMusicToList() {
 
   if(!audioScan) {
     if(audioView->childCount() < 1)
       populateAudioView();
   }
 
   QListViewItemIterator audioIt( audioView );
   DocLnk lnk;
   QString filename;
   // iterate through all items of the listview
   for ( ; audioIt.current(); ++audioIt ) {
     filename = audioIt.current()->text(3);
     lnk.setName( QFileInfo(filename).baseName() ); //sets name
     lnk.setFile( filename ); //sets file name
     d->selectedFiles->addToSelection(  lnk);
   }      
 
     /*    if(!audioScan)
         scanForAudio();
     QListIterator<DocLnk> dit( files.children() );
     for ( ; dit.current(); ++dit ) {
         if( QFileInfo(dit.current()->file() ).exists() ) {
             d->selectedFiles->addToSelection( **dit );
         }
     }
     */
     tabWidget->setCurrentPage(0);
     writeCurrentM3u();
     d->selectedFiles->first();
 }
 
 
 void PlayListWidget::addAllVideoToList() {
 
   if(!videoScan) {
     if(videoView->childCount() < 1)
       populateVideoView();
   }
 
   QListViewItemIterator videoIt( videoView );
   DocLnk lnk;
   QString filename;
   for ( ; videoIt.current(); ++videoIt ) {
     filename = videoIt.current()->text(3);
     lnk.setName( QFileInfo(filename).baseName() ); //sets name
     lnk.setFile( filename ); //sets file name
     d->selectedFiles->addToSelection(  lnk);
   }      
 
 
   /*    if(!videoScan)
         scanForVideo();
     QListIterator<DocLnk> dit( vFiles.children() );
     for ( ; dit.current(); ++dit ) {
         if( QFileInfo( dit.current()->file() ).exists() ) {
             d->selectedFiles->addToSelection( **dit );
         }
     }
 */    
     tabWidget->setCurrentPage(0);
     writeCurrentM3u();          
     d->selectedFiles->first();
 }
 
 
 void PlayListWidget::setDocument( const QString& fileref ) {
   //    qDebug( "<<<<<<<<set document>>>>>>>>>> "+fileref );
     fromSetDocument = TRUE;
     if ( fileref.isNull() ) {
         QMessageBox::warning( this, tr( "Invalid File" ),
                                tr( "There was a problem in getting the file." ) );
         return;
     }
 
     clearList();
     if( fileref.find( "m3u", 0, TRUE) != -1  ) { //is m3u
         readm3u( fileref );
     } else if( DocLnk( fileref).file().find( "m3u", 0, TRUE) != -1 ) {
         readm3u( DocLnk( fileref).file() );
     } else if( fileref.find( "pls", 0, TRUE) != -1 ) { //is pls
         readPls( fileref );
     } else if( DocLnk( fileref).file().find( "pls", 0, TRUE) != -1 ) {
         readPls( DocLnk( fileref).file() );
     } else {
         clearList();
         addToSelection( DocLnk( fileref ) );
         writeCurrentM3u();          
         
         d->setDocumentUsed = TRUE;
         mediaPlayerState->setPlaying( FALSE );
         mediaPlayerState->setPlaying( TRUE );
     }
 }
 
 
 void PlayListWidget::useSelectedDocument() {
     d->setDocumentUsed = FALSE;
 }
 
 
 const DocLnk *PlayListWidget::current() const { // this is fugly
     assert( currentTab() == CurrentPlayList );
 
-    return d->selectedFiles->current();
+    const DocLnk *lnk = d->selectedFiles->current();
+    if ( !lnk ) {
+        d->selectedFiles->first();
+        lnk = d->selectedFiles->current();
+    }
+    assert( lnk );
+    return lnk;
 }
 
 
 bool PlayListWidget::prev() {
     if ( mediaPlayerState->isShuffled() ) {
         const DocLnk *cur = current();
         int j = 1 + (int)(97.0 * rand() / (RAND_MAX + 1.0));
         for ( int i = 0; i < j; i++ ) {
             if ( !d->selectedFiles->next() )
                 d->selectedFiles->first();
         }
         if ( cur == current() )
             if ( !d->selectedFiles->next() ) {
                 d->selectedFiles->first();
             }
         return TRUE;
     } else {
         if ( !d->selectedFiles->prev() ) {
             if ( mediaPlayerState->isLooping() ) {
                 return d->selectedFiles->last();
             } else {
                 return FALSE;
             }
         }
         return TRUE;
     }
 }
 
 
 bool PlayListWidget::next() {
 //qDebug("<<<<<<<<<<<<next()");
     if ( mediaPlayerState->isShuffled() ) {
         return prev();
     } else {
         if ( !d->selectedFiles->next() ) {
             if ( mediaPlayerState->isLooping() ) {
                 return d->selectedFiles->first();
             } else {
                 return FALSE;
             }
         }
         return TRUE;
     }
 }
 
 
 bool PlayListWidget::first() {
     return d->selectedFiles->first();
 }
 
 
 bool PlayListWidget::last() {
     return d->selectedFiles->last();
 }
 
 
  void PlayListWidget::saveList() {
    writem3u();
  }
 
 
 void PlayListWidget::loadList( const DocLnk & lnk) {
     QString name = lnk.name();
     //  qDebug("<<<<<<<<<<<<<<<<<<<<<<<<currentList is "+name);
 
     if( name.length()>0) {
         setCaption("OpiePlayer: "+name);
 //       qDebug("<<<<<<<<<<<<load list "+ lnk.file());
         clearList();
         readm3u(lnk.file());
         tabWidget->setCurrentPage(0);
     }
 }
 
 void PlayListWidget::addSelected() {
   assert( inFileListMode() );
 
   QListView *fileListView = currentFileListView();
   QListViewItemIterator it( fileListView );
   for ( ; it.current(); ++it )
       if ( it.current()->isSelected() ) {
           QString filename = it.current()->text(3);
 
           DocLnk lnk;
           lnk.setName( QFileInfo( filename ).baseName() ); //sets name
           lnk.setFile( filename ); //sets file name
 
           d->selectedFiles->addToSelection( lnk );
       }
 
   fileListView->clearSelection();
 
   tabWidget->setCurrentPage( 0 );
   writeCurrentM3u();
 }
 
 
 void PlayListWidget::removeSelected() {
     d->selectedFiles->removeSelected( );
     writeCurrentM3u();          
 }
 
 
 void PlayListWidget::playIt( QListViewItem *it) {
     if(!it) return;
     mediaPlayerState->setPlaying(FALSE);
     mediaPlayerState->setPlaying(TRUE);
     d->selectedFiles->unSelect();
 }
 
 
 void PlayListWidget::addToSelection( QListViewItem *it) {
   d->setDocumentUsed = FALSE;
 
   if(it) {
     if ( currentTab() == CurrentPlayList )
         return;
     //      case 1: {
     DocLnk lnk;
     QString filename;
 
     filename=it->text(3);
     lnk.setName( QFileInfo(filename).baseName() ); //sets name
     lnk.setFile( filename ); //sets file name
     d->selectedFiles->addToSelection(  lnk);
  
     writeCurrentM3u();          
     tabWidget->setCurrentPage(0);
         
   }
 }
 
 
 void PlayListWidget::tabChanged(QWidget *) {
 
     d->tbPlay->setEnabled( true );
 
     switch ( currentTab() ) {
     case CurrentPlayList:
     {
         if( !tbDeletePlaylist->isHidden() )  {
             tbDeletePlaylist->hide();
         }
         d->tbRemoveFromList->setEnabled(TRUE);
         d->tbAddToList->setEnabled(FALSE);
+
+        d->tbPlay->setEnabled( !d->selectedFiles->isEmpty() );
     }
     break;
     case AudioFiles:
     {
       //        audioView->clear();
         if(!audioPopulated) populateAudioView();
 
         if( !tbDeletePlaylist->isHidden() ) {
             tbDeletePlaylist->hide();
         }
         d->tbRemoveFromList->setEnabled(FALSE);
         d->tbAddToList->setEnabled(TRUE);
     }
     break;
     case VideoFiles:
     {
       //        videoView->clear();
         if(!videoPopulated) populateVideoView();
         if( !tbDeletePlaylist->isHidden() ) {
             tbDeletePlaylist->hide();
         }
         d->tbRemoveFromList->setEnabled(FALSE);
         d->tbAddToList->setEnabled(TRUE);
     }
     break;
     case PlayLists:
     {
         if( tbDeletePlaylist->isHidden() ) {
             tbDeletePlaylist->show();
         }
         playLists->reread();
         d->tbAddToList->setEnabled(FALSE);
 
         d->tbPlay->setEnabled( false );
     }
     break;
     };
 }
 
 
 void PlayListWidget::btnPlay(bool b) {
 //    mediaPlayerState->setPlaying(false);
     mediaPlayerState->setPlaying(b);
     insanityBool=FALSE;
 }
 
 void PlayListWidget::deletePlaylist() {
   switch( QMessageBox::information( this, (tr("Remove Playlist?")),
                                     (tr("You really want to delete\nthis playlist?")),
                                     (tr("Yes")), (tr("No")), 0 )){
   case 0: // Yes clicked,
     QFile().remove(playLists->selectedDocument().file());
     QFile().remove(playLists->selectedDocument().linkFile());
     playLists->reread();
     break;
   case 1: // Cancel
     break;
   };
 }
 
 
 void PlayListWidget::playSelected() {
     btnPlay( TRUE);
 }
 
 
 void PlayListWidget::scanForAudio() {
 //  qDebug("scan for audio");
   files.detachChildren();
   QListIterator<DocLnk> sdit( files.children() );
   for ( ; sdit.current(); ++sdit ) {
     delete sdit.current();
   }
 //  Global::findDocuments( &files, "audio/*");
   Global::findDocuments( &files, audioMimes);
   audioScan = true;
   populateAudioView();
 }
 
 void PlayListWidget::scanForVideo() {
 //  qDebug("scan for video");
   vFiles.detachChildren();
   QListIterator<DocLnk> sdit( vFiles.children() );
   for ( ; sdit.current(); ++sdit ) {
     delete sdit.current();
   }
   Global::findDocuments(&vFiles, "video/*");
   videoScan = true;
   populateVideoView();  
 }
 
 void PlayListWidget::populateAudioView() {
     audioView->clear();
     StorageInfo storageInfo;
     //    const QList<FileSystem> &fs = storageInfo.fileSystems();
     if(!audioScan) {
         scanForAudio();
     }
 
     QListIterator<DocLnk> dit( files.children() );
     //    QListIterator<FileSystem> it ( fs );
     audioView->clear();
 
     QString storage;
      for ( ; dit.current(); ++dit ) {
 //       //        for( ; it.current(); ++it ){
 //             const QString name = (*dit)->name();
 //             const QString path = (*dit)->path();
 //             if(dit.current()->file().find(path) != -1 ) {
 //                 storage = name;
 //                 //    }
 //         }
 
         QListViewItem * newItem;
         if ( QFile( dit.current()->file()).exists() ||
              dit.current()->file().left(4) == "http" ) {
             long size;
             if( dit.current()->file().left(4) == "http" )
                 size=0;
             else
                 size = QFile( dit.current()->file() ).size();
             
             newItem= /*(void)*/ new QListViewItem( audioView, dit.current()->name(),
                                                    QString::number(size ), "" /*storage*/,
                                                    dit.current()->file() );
             newItem->setPixmap( 0, Resource::loadPixmap( "opieplayer2/musicfile" ) );
 //            qDebug("<<<< "+dit.current()->file());
        }
     }
     audioPopulated=true;
 }
 
 
 void PlayListWidget::populateVideoView() {
     videoView->clear();
     StorageInfo storageInfo;
     //    const QList<FileSystem> &fs = storageInfo.fileSystems();
 
     if(!videoScan ) {
         scanForVideo();
     }
 
     QListIterator<DocLnk> Vdit( vFiles.children() );
 //    QListIterator<FileSystem> it ( fs );
     videoView->clear();
     QString storage, pathName;
      for ( ; Vdit.current(); ++Vdit ) {
 //       //        for( ; it.current(); ++it ) {
 //             const QString name = (*Vdit)->name();
 //             const QString path = (*Vdit)->path();
 //             if( Vdit.current()->file().find(path) != -1 ) {
 //                 storage=name;
 //                 pathName=path;
 //                 //            }
 //         }
 
         QListViewItem * newItem;
         if ( QFile( Vdit.current()->file() ).exists() ) {
             newItem= /*(void)*/ new QListViewItem( videoView, Vdit.current()->name(),
                    QString::number( QFile( Vdit.current()->file() ).size() ),
                                                    ""/*storage*/, Vdit.current()->file());
             newItem->setPixmap(0, Resource::loadPixmap( "opieplayer2/videofile" ) );
         }
     }
     videoPopulated=true;
 }
 
 QListView *PlayListWidget::currentFileListView() const
 {
     switch ( currentTab() ) {
         case AudioFiles: return audioView;
         case VideoFiles: return videoView;
         default: assert( false );
     }
     return 0;
 }
 
 bool PlayListWidget::inFileListMode() const
 {
     TabType tab = currentTab();
     return tab == AudioFiles || tab == VideoFiles;
 }
 
 void PlayListWidget::openFile() {
                 // http://66.28.164.33:2080
                 // http://somafm.com/star0242.m3u
     QString filename, name;
     InputDialog *fileDlg;
     fileDlg = new InputDialog(this,tr("Open file or URL"),TRUE, 0);
     fileDlg->exec();
     if( fileDlg->result() == 1 ) {
         filename = fileDlg->text();
         qDebug( "Selected filename is " + filename );
         //            Om3u *m3uList;
             DocLnk lnk;
             Config cfg( "OpiePlayer" );
             cfg.setGroup("PlayList");
 
         if(filename.left(4) == "http") {
             QString m3uFile, m3uFilePath;
             if(filename.find(":",8,TRUE) != -1) { //found a port
                 m3uFile = filename.left( filename.find( ":",8,TRUE));
                 m3uFile = m3uFile.right(  7);
             } else if(filename.left(4) == "http"){
                 m3uFile=filename;
                 m3uFile = m3uFile.right( m3uFile.length() - 7);
             } else{
                 m3uFile=filename;
             }
 
 //            qDebug("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"+ m3uFile);
             lnk.setName( filename ); //sets name
             lnk.setFile( filename ); //sets file name
 
 //            lnk.setIcon("opieplayer2/musicfile");
 
             d->selectedFiles->addToSelection(  lnk );
             writeCurrentM3u();
             d->selectedFiles->setSelectedItem( lnk.name());
         }
         else if( filename.right( 3) == "m3u" ) {
             readm3u( filename );
 
         } else if( filename.right(3) == "pls" ) {
             readPls( filename );
         } else {
             lnk.setName( QFileInfo(filename).baseName() ); //sets name
             lnk.setFile( filename ); //sets file name
             d->selectedFiles->addToSelection(  lnk);
             writeCurrentM3u();
             d->selectedFiles->setSelectedItem( lnk.name());
         }
     }
             
     if( fileDlg ) {
         delete fileDlg;
     }
 }
 
 /*
 reads m3u and shows files/urls to playlist widget */
 void PlayListWidget::readm3u( const QString &filename ) { 
     qDebug( "read m3u filename " + filename );
 
     Om3u *m3uList;
     QString s, name;
     m3uList = new Om3u( filename, IO_ReadOnly );
     m3uList->readM3u();
     DocLnk lnk;
     for ( QStringList::ConstIterator it = m3uList->begin(); it != m3uList->end(); ++it ) {
         s = *it;
 //          qDebug("reading "+ s);
         if(s.left(4)=="http") {
           lnk.setName( s ); //sets file name
           lnk.setIcon("opieplayer2/musicfile");
           lnk.setFile( s ); //sets file name