Function hiddenByOverflow

javascript/atoms/dom.js:565–571

(e)

  // Elements that are hidden by overflow are not shown.
  function hiddenByOverflow(e) {
    return bot.dom.getOverflowState(e) == bot.dom.OverflowState.HIDDEN &&
      goog.array.every(e.childNodes, function (n) {
        return !bot.dom.isElement(n) || hiddenByOverflow(n) ||
          !positiveSize(n);
      });
  }
  return !hiddenByOverflow(elem);
};