!7

static DynamicVStack buttons;
static Set<JButton> loadedButtons /*= new HashSet; */ = weakIdentityHashSet();

p-subst-autoupdate {
  buttons = showNiceVerticalButtons();
  refresh();
  addButtonsToWindow(buttons, "Refresh", f-thread refresh);
}

svoid refresh {
  if (replaceNiceButtons(buttons, filesForNiceButtons(sortFilesByDate(listPNGFiles(userDesktopDir()))))) {
    centerPackFrame(buttons);
    scrollPaneOnScroll(enclosingScrollPane(buttons), r {
      for (JButton b : (L<JButton>) (L) stackElementsShowing(buttons)) {
        //if (add(loadedButtons, b)) { // will strangely not work
        if (!add_byContains(loadedButtons, b)) {
          print("Loading: " + identityHashCode(b) + " / " + getText(b));
          print("Size: " + l(loadedButtons));
        }
      }
    });
  }
}