!7

cmodule PieceDatabase {

  S piece = "white king";

  bool lightSquares;

  transient Map<Bool, MultiMap<S>> map = new Map;

  transient SingleComponentPanel scp;

  transient ImageSurface is;

  transient JLabel lblCount;

  transient ReliableSingleThread rst = dm_rst(module(), r update);

  start-thread {

    for (bool lightSquares : ll(false, true))

      map.put(lightSquares, uniquifyMultiMapValues(pairsToMultiMap(reversePairs(chessPieceImagesFromAGIBlue(lightSquares)))));

    rst.trigger();

  }

  void update {

    if (is == null) ret;

    scp.setComponent(centerAndSouthWithMargin(jScroll_center(is), lblCount));

    MultiMap<S> mm = map.get(lightSquares);

    if (mm == null) ret;

    L<BufferedImage> images = map loadImage2(mm.get(replaceObject(piece, "empty square", "empty")));

    is.setImage(mergeBufferedImagesHorizontally(images));

    setText(lblCount, nImages(images));

  }

  visualize {

    is = jImageSurface();

    lblCount = jCenteredLabel();

    ret withComputing(rst, northAndCenterWithMargins(

      jline(

        withLabel("Show images for:", main.onChange(rst, dm_comboBox piece(replace(ai_chessPieces(), "empty", "empty square")))),

        dm_checkBox("Light squares", 'lightSquares)),

      scp = singleComponentPanel(jCenteredLabel("Loading..."))));

  }

}