Method focus

src/main/java/org/htmlunit/html/DomElement.java:1573–1589

Sets the focus on this element.

()

     * Sets the focus on this element.
     */
    public void focus() {
        if (!(this instanceof SubmittableElement
            || this instanceof HtmlAnchor anchor && ATTRIBUTE_NOT_DEFINED != anchor.getHrefAttribute()
            || this instanceof HtmlArea area
                && (ATTRIBUTE_NOT_DEFINED != area.getHrefAttribute()
                    || getPage().getWebClient().getBrowserVersion().hasFeature(JS_AREA_WITHOUT_HREF_FOCUSABLE))
            || this instanceof HtmlElement && ((HtmlElement) this).getTabIndex() != null)) {
            return;
        }

        if (!isDisplayed() || isDisabledElementAndDisabled()) {
            return;
        }

        final HtmlPage page = (HtmlPage) getPage();
        page.setFocusedElement(this);
    }

    /**
     * Removes focus from this element.