How to use

appendChild

method

in

com.google.gwt.user.client.Element

private static void ensureHiddenDiv() {
 // If it's already been created, don't do anything.
 if (hiddenDiv != null) {
  return;
 }
 hiddenDiv = Document.get().createDivElement();
 UIObject.setVisible(hiddenDiv, false);
 RootPanel.getBodyElement().appendChild(hiddenDiv);
}

private static void ensureHiddenDiv() {
 // If the hidden DIV has not been created, create it.
 if (hiddenDiv == null) {
  hiddenDiv = Document.get().createDivElement();
  UIObject.setVisible(hiddenDiv, false);
  RootPanel.getBodyElement().appendChild(hiddenDiv);
 }
}

/**
 * Add a source element to this media. The browser will request source files
 * from the server until it finds one it can play.
 *
 * <p>
 * Only use this method if you do not know the type of the source file, as the
 * browser cannot determine the format from the filename and must download
 * each source until a compatible one is found. Instead, you should specify
 * the type for the media using {@link #addSource(String, String)} so the
 * browser can choose a source file without downloading the file.
 * </p>
 *
 * @param url a String URL
 * @see #addSource(String, String)
 */
public SourceElement addSource(String url) {
 SourceElement elem = Document.get().createSourceElement();
 elem.setSrc(url);
 getElement().appendChild(elem);
 return elem;
}

/**
 * Creates an empty popup panel. A child widget must be added to it before it
 * is shown.
 */
public PopupPanel() {
 super();
 super.getContainerElement().appendChild(impl.createElement());
 // Default position of popup should be in the upper-left corner of the
 // window. By setting a default position, the popup will not appear in
 // an undefined location if it is shown before its position is set.
 setPopupPosition(0, 0);
 setStyleName(DEFAULT_STYLENAME);
 setStyleName(getContainerElement(), "popupContent");
}

protected CheckBox(Element elem) {
 super(DOM.createSpan());
 inputElem = InputElement.as(elem);
 labelElem = Document.get().createLabelElement();
 getElement().appendChild(inputElem);
 getElement().appendChild(labelElem);
 String uid = DOM.createUniqueId();
 inputElem.setPropertyString("id", uid);
 labelElem.setHtmlFor(uid);
 directionalTextHelper = new DirectionalTextHelper(labelElem, true);
 // Accessibility: setting tab index to be 0 by default, ensuring element
 // appears in tab sequence. FocusWidget's setElement method already
 // calls setTabIndex, which is overridden below. However, at the time
 // that this call is made, inputElem has not been created. So, we have
 // to call setTabIndex again, once inputElem has been created.
 setTabIndex(0);
}

/**
 * Ensure that the animation frame exists and return it.
 *
 * @return the animation frame
 */
Element ensureAnimationFrame() {
 if (animationFrame == null) {
  animationFrame = Document.get().createDivElement();
  animationFrame.getStyle().setOverflow(Overflow.HIDDEN);
  animationFrame.getStyle().setDisplay(Display.NONE);
  getElement().appendChild(animationFrame);
 }
 return animationFrame;
}

private void startResizingFrom(int x, int y) {
 isResizing = true;
 onSplitterResizeStarted(x, y);
 // Resize glassElem to take up the entire scrollable window area
 int height = RootPanel.getBodyElement().getScrollHeight() - 1;
 int width = RootPanel.getBodyElement().getScrollWidth() - 1;
 glassElem.getStyle().setProperty("height", height + "px");
 glassElem.getStyle().setProperty("width", width + "px");
 RootPanel.getBodyElement().appendChild(glassElem);
}

public Tab(Widget child) {
 super(Document.get().createDivElement());
 getElement().appendChild(inner = Document.get().createDivElement());
 setWidget(child);
 setStyleName(TAB_STYLE);
 inner.setClassName(TAB_INNER_STYLE);
 getElement().addClassName(CommonResources.getInlineBlockStyle());
}

/**
 * Appends a element.
 * 
 * @param child the element to add
 * @return the child element
 */
public El appendChild(Element child) {
 dom.appendChild(child);
 return new El(child);
}

hiddenDiv = Document.get().createDivElement();
UIObject.setVisible(hiddenDiv, false);
RootPanel.getBodyElement().appendChild(hiddenDiv);

private void constructDOM() {
  setElement(root);
  root.appendChild(icon);
  root.appendChild(label);
  root.appendChild(ariaLink);
  root.appendChild(runningIndicator);
  addStyleName("item");
  icon.addClassName("icon");
  label.addClassName("label");
  DOM.sinkEvents(getElement(), Event.MOUSEEVENTS);
}

getElement().appendChild(scrollLock);

protected RadioButton(InputElement element) {
  super(DOM.createLabel(), element);
  setStyleName(Styles.BTN);
  setType(ButtonType.DEFAULT);
  getElement().appendChild(inputElem);
  getElement().appendChild(Document.get().createTextNode(" "));
  getElement().appendChild(labelElem);
  getElement().appendChild(Document.get().createTextNode(" "));
}

  @Override
  public void onChange(ChangeEvent event) {
    if (iconElement != null) {
      iconElement.removeFromParent();
    }
    String html = getHTML();
    if (showRequiredIndicator && html != null && !"".equals(html)) {
      iconElement = createIconElement();
      getElement().appendChild(iconElement);
    }
  }
}, ChangeEvent.getType());

/**
 * Sets the source of the quote. This may be a person or the title of a
 * book, song, ...
 * 
 * @param source
 *            the source of the quote
 */
public void setSource(String source) {
  getElement().appendChild(new SmallCite(source).getElement());
}

public Element getContainer(TreeNode node) {
 if (node.container == null) {
  String s = getTemplate(node.m, null, null, null, false, false, null, 0, TreeViewRenderMode.CONTAINER);
  node.container = node.getElement().appendChild(XDOM.create(s));
 }
 return node.container;
}

public SmallCite(String text) {
  setElement(DOM.createElement("small"));
  this.cite = new Cite(text);
  getElement().appendChild(cite.getElement());
}

private void addSearchPopUpToTreeIfNotDisplayed() {
 if (Document.get().getElementById(ID) == null) {
  searchPopUp.setVisible(true);
  tree.getParent().getElement().appendChild(searchPopUp.getElement());
 }
}

@Override
public void add(String tag) {
  if (isAttached())
    super.add(tag);
  else {
    OptionElement option = Document.get().createOptionElement();
    option.setValue(tag);
    option.setInnerText(tag);
    getElement().appendChild(option);
  }
}

private ListItem change2TextListItem(Widget w) {
  String text;
  
  if (w instanceof HasText) {
    text = ((HasText) w).getText();
  } else {
    text = w.getElement().getInnerText();
  }
  ListItem newest = new ListItem();
  newest.setStyleName(Constants.ACTIVE);
  newest.getElement().appendChild(Document.get().createTextNode(text));
  return newest;
}