How to use

hasChildNodes

method

in

com.google.gwt.user.client.Element

private boolean isMounted() {
 return getElement().hasChildNodes();
}

protected void cleanup(El row) {
 NodeList<Node> cn = row.dom.getChildNodes();
 for (int i = cn.getLength() - 1; i >= 0; i--) {
  Element td = (Element) cn.getItem(i);
  if (!td.hasChildNodes()) {
   row.dom.removeChild(td);
  }
 }
}

protected void cleanCells() {
 NodeList<Element> tds = DomQuery.select("tr.x-grid3-hd-row > td", table.getElement());
 for (int i = 0; i < tds.getLength(); i++) {
  Element td = tds.getItem(i);
  if (!td.hasChildNodes()) {
   El.fly(td).removeFromParent();
  }
 }
}

public void addWidget(Widget w) {
  if (w != null) {
    if (hasSeparator) {
      if (widgetPanel.getElement().hasChildNodes()) {
        HTML separatorWrapper = new HTML("<span style='float: left; margin-left: .7em; margin-right: .7em'>|</span>");
        separatorWrapper.addStyleName("ks-documentHeader-widgetPanel");
        widgetPanel.add(separatorWrapper);
      }
    }
    w.addStyleName("ks-documentHeader-widgetPanel");
    widgetPanel.add(w);
  }
}

public void updateFromUIDL(UIDL uidl) {
  if (getElement().hasChildNodes()) {
    getElement().removeAllChildren();
  initialized = getElement().hasChildNodes();

private void ensureFocusElement() {
 if (focusEl != null) {
  focusEl.removeFromParent();
 }
 focusEl = new El(focusImpl.createFocusable());
 focusEl.dom.getStyle().setProperty("outline", "none");
 getElement().appendChild(focusEl.dom);
 if (focusEl.dom.hasChildNodes()) {
  focusEl.dom.getFirstChildElement().getStyle().setProperty("outline", "none");
  com.google.gwt.dom.client.Style focusElStyle = focusEl.dom.getFirstChildElement().getStyle();
  focusElStyle.setProperty("borderWidth", "0px");
  focusElStyle.setProperty("fontSize", "1px");
  focusElStyle.setPropertyPx("lineHeight", 1);
 }
 focusEl.setLeft(0);
 focusEl.setTop(0);
 focusEl.makePositionable(true);
 focusEl.addEventsSunk(Event.FOCUSEVENTS);
}