- 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
@@ -357,129 +357,135 @@ void PlayListWidget::addAllVideoToList() {
   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);
@@ -503,128 +509,130 @@ void PlayListWidget::addSelected() {
           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);
 }