Playlist: Grey invalid song entries when updating items.

Author: smithjd15

src/playlist/playlist.cpp

@@ -1204,6 +1204,9 @@ void Playlist::UpdateItems(const SongList& songs) {
   QLinkedList<Song> songs_list;
   for (const Song& song : songs) songs_list.append(song);
 
+  QSettings s;
+  s.beginGroup(kSettingsGroup);
+
   for (int i = 0; i < items_.size(); i++) {
     // Update current items list
     QMutableLinkedListIterator<Song> it(songs_list);
@@ -1223,6 +1226,12 @@ void Playlist::UpdateItems(const SongList& songs) {
         } else {
           new_item = PlaylistItemPtr(new SongPlaylistItem(song));
         }
+        if (s.value("greyoutdeleted", false).toBool()) {
+          if (!song.is_valid()) {
+            new_item->SetForegroundColor(kInvalidSongPriority,
+                                         kInvalidSongColor);
+          }
+        }
         items_[i] = new_item;
         emit dataChanged(index(i, 0), index(i, ColumnCount - 1));
         // Also update undo actions