setDisabled(true); return parent::_getElementHtml($element) . $this->getCopyToClipboardBtnHtml($element); } private function getCopyToClipboardBtnHtml(AbstractElement $element): string { $isElementHasValue = !empty($element->getValue()); $disabledAttribute = $isElementHasValue ? '' :'disabled'; $elementSelector = '#' . $element->getHtmlId(); $ariaLabel = __('Copy to clipboard')->render(); return << BUTTON; } }