!7

cmodule PieceDatabase {
  S piece = "white king";
  
  transient MultiMap<S, BufferedImage> multiMap;
  transient ImageSurface is;
  transient ReliableSingleThread rst = dm_rst(module(), r update);
  
  start-thread {
    multiMap = pairsToCIMultiMap(chessOCR_squareImagesCollectorFromAGIBlue().allImages());
    rst.trigger();
  }
  
  void update {
    if (multiMap == null || is == null) ret;
    is.setImage(mergeBufferedImagesHorizontally(multiMap.get(replaceObject(piece, "empty square", "empty"))));
  }
  
  visual withComputing(rst, northAndCenterWithMargins(
    main.onChange(rst, dm_comboBox piece(replace(ai_chessPieces(), "empty", "empty square"))),
    jScroll_center(is = jImageSurface())));
}