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!7

static Class _classMigration_LastImagesInDirectory = ImagesInDirectory; // not implemented yet

sclass ImagesInDirectory extends DynSCP {
  File dir;
  L<S> allFiles, imageFiles;
  
  transient DynamicHStack buttons;
  transient ButtonImageLoader imageLoader;

  File dirObject() { ret dir; }
  
  JComponent visualize2() {
    if (buttons == null) { buttons = makeNiceButtons(); updateButtons(); }
    if (imageLoader == null) imageLoader = new ButtonImageLoader(buttons);
    if (mate! == null) ret jcenteredlabel("Need directory");
    ret jHigherScrollPane(jfullcenter(buttons));
  }
  
  void update {
    lock lock;
    try {
      if (dir == null) ret;
      L<S> allFiles = castCall(mate!, 'getFiles);
      if (this.allFiles != allFiles) {
        setField(+allFiles);
        setField(imageFiles := filterOrNull(allFiles, f isImageFileName));
      }
    } finally {
      if (changeCount != oldChangeCount) updateButtons();
    }
  }
  
  void updateButtons {
    if (dir == null || buttons == null) ret with setModuleName("Images in directory");
    L<TextImageAction> l = filesForNiceButtons(sortFilesByDate(
      fileNamesInDirToFile(new File(dir), imageFiles)), f showImage);
    for (final TextImageAction tia : l)
      tia.popupMenuMaker = ImagesInDirectory_popupMenu(this, tia);
    replaceNiceButtons(buttons, l);
    setModuleName(imageFiles == null
      ? "Not allowed to look in directory " + fileName(dirObject())
      : n2(l, "image") + " in directory " + fileName(dirObject()));
    if (imageLoader != null) imageLoader.update();
  }
}

static VF1<JPopupMenu> ImagesInDirectory_popupMenu(ImagesInDirectory m, final TextImageAction tia) {
  // Haha, not even used
  //final WeakReference<ImagesInDirectory> me = new(m);
  ret voidfunc(JPopupMenu menu) {
    addPopupItemsForImageFile(menu, filesForNiceButtons_map.get(tia))
  };
}