Fixed playlist row selection behaviour on playback stop.

src/main/java/musicplayer/player/GStreamerPlayer.java

@@ -125,7 +125,7 @@ public class GStreamerPlayer implements IPlayer{
             internalThread.stop();
             thread = null;
             resetSeek();
-            playlist.setPlayingSong(currentSong);
+            playlist.setStopped();
         }
     }
 

src/main/java/musicplayer/playlist/IPlaylist.java

@@ -20,5 +20,6 @@ public interface IPlaylist {
     void deleteAll();
     boolean isEmpty();
     void setPlayingSong(Song song);
+    void setStopped();
 
 }

src/main/java/musicplayer/playlist/JTablePlaylist.java

@@ -4,10 +4,7 @@ import musicplayer.model.Song;
 
 import javax.swing.*;
 import javax.swing.table.AbstractTableModel;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-import java.util.Optional;
+import java.util.*;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
@@ -117,10 +114,21 @@ public class JTablePlaylist extends JScrollPane implements IPlaylist {
 
     @Override
     public void setPlayingSong(Song song){
-        int index = playlistTableModel.getSongIndex(song);
+        final int index = getIndex(song);
+        playlistTableModel.setPlayingRow(index);
         if(index >= 0)
             SwingUtilities.invokeLater(() -> playList.setRowSelectionInterval(index, index));
-        playlistTableModel.setPlayingRow(index);
+    }
+
+    @Override
+    public void setStopped(){
+        if(getActive().isPresent()) {
+            int index = getIndex(getActive().get());
+            playlistTableModel.setPlayingRow(-1);
+            SwingUtilities.invokeLater(() -> playList.setRowSelectionInterval(index, index));
+        }
+        else
+            playlistTableModel.setPlayingRow(-1);
     }
 
     private class PlaylistTableModel extends AbstractTableModel {

src/test/java/musicplayer/playlist/JTablePlaylistTest.java

@@ -6,15 +6,23 @@ import musicplayer.model.Song;
 import org.junit.Before;
 import org.junit.Test;
 
+import javax.swing.*;
+
+import java.lang.reflect.Field;
+
 import static org.junit.Assert.*;
 
 public class JTablePlaylistTest {
 
     JTablePlaylist playlist;
+    JTable innerTable;
 
     @Before
     public void setUp() throws Exception {
         playlist = new JTablePlaylist();
+        Field jTable = JTablePlaylist.class.getDeclaredField("playList");
+        jTable.setAccessible(true);
+        innerTable = (JTable)jTable.get(playlist);
     }
 
     @Test
@@ -109,6 +117,8 @@ public class JTablePlaylistTest {
         playlist.addSong(testSong);
         playlist.setPlayingSong(testSong);
         assertEquals(testSong, playlist.getActive().get());
+        Thread.sleep(10); // Wait for Swing thread update propagation
+        assertEquals(playlist.getIndex(testSong), innerTable.getSelectedRow());
     }
 
     @Test
@@ -116,6 +126,17 @@ public class JTablePlaylistTest {
         Song testSong = new Song("1", "1", "test 1", new Artist("test artist"), new Album("test album"), "test genre", "");
         playlist.setPlayingSong(testSong);
         assertFalse(playlist.getActive().isPresent());
+        assertEquals(-1, innerTable.getSelectedRow());
+    }
+
+    @Test
+    public void testSetStopped() throws Exception {
+        Song testSong = new Song("1", "1", "test 1", new Artist("test artist"), new Album("test album"), "test genre", "");
+        playlist.addSong(testSong);
+        playlist.setPlayingSong(testSong);
+        playlist.setStopped();
+        assertEquals(testSong, playlist.getActive().get());
+        assertEquals(playlist.getIndex(testSong), innerTable.getSelectedRow());
     }
 
     @Test