Open Wikipedia page on single row selection

app/playlists.py

@@ -484,6 +484,8 @@ class PlaylistTab(QTableWidget):
                         if update_next or update_current:
                             self.musicmuster.update_headers()
 
+        self.clear_selection()
+
     def closeEditor(self,
                     editor: QWidget,
                     hint: QAbstractItemDelegate.EndEditHint) -> None:
@@ -1492,6 +1494,10 @@ class PlaylistTab(QTableWidget):
     def _get_row_title(self, row: int) -> Optional[str]:
         """Return title on this row or None if none"""
 
+        # Header rows may have note in TITLE row so check for track_id
+        if not self._get_row_track_id(row):
+            return None
+
         item_title = self.item(row, TITLE)
         if not item_title:
             return None
@@ -1861,6 +1867,11 @@ class PlaylistTab(QTableWidget):
             self.musicmuster.lblSumPlaytime.setText("")
             return
 
+        # If only one row is selected and it's a track row, show
+        # Wikipedia page for that track
+        if len(selected_rows) == 1:
+            self._wikipedia(selected_rows[0])
+
         ms = 0
         for row in selected_rows:
             ms += self._get_row_duration(row)
@@ -2275,5 +2286,7 @@ class PlaylistTab(QTableWidget):
         """Look up passed row title in Wikipedia and display info tab"""
 
         title = self._get_row_title(row_number)
+        if not title:
+            return
 
         self.musicmuster.tabInfolist.open_in_wikipedia(title)