transient sclass JGallery is Swingable {
  L<File> files;
  settable bool horizontal = true;

  simplyCached DynamicStack buttons() {
    ret horizontal ? makeNiceButtons() : verticalNiceButtons();
  }

  simplyCached ButtonImageLoader imageLoader() {
    ret new ButtonImageLoader(buttons());
  }
  
  void setImageFiles(Cl<File> filesCollection) {
    var files = asList(filesCollection);
    if (eq(this.files, files)) ret;
    this.files = files;
    printVars("JGallery.setImageFiles", files);
    L<TextImageAction> l = filesForNiceButtons(files, lambda1 openImage);
    
    /*for (final TextImageAction tia : l)
      tia.popupMenuMaker = imageFilesPopupMenuFunction(tia);*/
      
    replaceNiceButtons(buttons(), l);
    imageLoader().update();
  }
  
  cachedVisual jHigherScrollPane(jfullcenter(buttons()));
  
  swappable void openImage(File f) { showImage(f); }
}