Method tabToNextElement

src/main/java/org/htmlunit/html/HtmlPage.java:1619–1648

Move the focus to the next element in the tab order. To determine the specified tab order, refer to HtmlPage#getTabbableElements() @return the element that has focus after calling this method

()

     * @return the element that has focus after calling this method
     */
    public HtmlElement tabToNextElement() {
        final List<HtmlElement> elements = getTabbableElements();
        if (elements.isEmpty()) {
            setFocusedElement(null);
            return null;
        }

        final HtmlElement elementToGiveFocus;
        final DomElement elementWithFocus = getFocusedElement();
        if (elementWithFocus == null) {
            elementToGiveFocus = elements.get(0);
        }
        else {
            final int index = elements.indexOf(elementWithFocus);
            if (index == -1) {
                // The element with focus isn't on this page
                elementToGiveFocus = elements.get(0);
            }
            else if (index == elements.size() - 1) {
                // if at last jump to start
                elementToGiveFocus = elements.get(0);
            }
            else {
                elementToGiveFocus = elements.get(index + 1);
            }
        }

        setFocusedElement(elementToGiveFocus);
        return elementToGiveFocus;
    }

    /**
     * Move the focus to the previous element in the tab order. To determine the specified tab