How to use

insertBefore

method

in

com.google.gwt.user.client.Element

/**
 * Inserts the element as a child before the given element.
 * 
 * @param child the element to insert
 * @param before the element the child will be inserted before
 * @return this
 */
public El insertBefore(Element child, Element before) {
 dom.insertBefore(child, before);
 return this;
}

public void show(Element c) {
 c.insertBefore(getElement(), null);
 show();
}

@Override
public <A extends EditorValue<T>> A getEditorForTraversal(int index) {
  InternalListItem editor = null;
  if (this.items.size() > index) {
    editor = this.items.get(index);
  } else {
    editor = new InternalListItem();
    this.items.add(editor);
    this.addListItem(editor);
    this.getElement().insertBefore(editor.getElement(), this.nextItem.getElement());
  }
  return (A) editor;
}

@Override
public <A extends EditorValue<T>> A getEditorForTraversal(int index) {
  InternalListItem editor = null;
  if (this.items.size() > index) {
    editor = this.items.get(index);
  } else {
    editor = new InternalListItem();
    this.items.add(editor);
    this.addListItem(editor);
    this.getElement().insertBefore(editor.getElement(), this.nextItem.getElement());
  }
  return (A) editor;
}

private void ensureHeader()
{
  if( thead != null )
    return;
  thead = DOM.createTHead();
  getElement().insertBefore( thead, getBodyElement() );
}

private void ensureHeader()
{
  if( thead != null )
    return;
  thead = DOM.createTHead();
  getElement().insertBefore( thead, getBodyElement() );
}

public void insertBefore(IsWidget child, int beforeIndex) {
  if (beforeIndex >= children.size()) {
    add(child);
    return;
  }
  Node beforeNode = getElement().getChild(beforeIndex);
  getElement().insertBefore(child.asWidget().getElement(), beforeNode);
  List<IsWidget> newChildList = new ArrayList<IsWidget>();
  for (int i = 0; i < children.size(); i++) {
    if (i == beforeIndex) {
      newChildList.add(child);
    }
    newChildList.add(children.get(i));
  }
  children = newChildList;
  adopt(child.asWidget());
}

/**
 * Inserts a new cell into the specified row.
 * 
 * @param row the row into which the new cell will be inserted
 * @param column the column before which the cell will be inserted
 * @return the new element
 * @throws IndexOutOfBoundsException
 */
protected Element insertCell(int row, int column) {
 Element tr = rowFormatter.getElement(row);
 Element td = createCell();
 Element beforeTd = cellFormatter.getRawElement(row, column);
 tr.insertBefore(td, beforeTd);
 return td;
}

protected void showModalityCurtain(Element overlayContainer, Element element, boolean isShowing, int index) {
  getModalityCurtain().getStyle().setZIndex(index + VNotification.Z_INDEX_BASE);
  if (isShowing) {
    overlayContainer.insertBefore(getModalityCurtain(), element);
  } else {
    overlayContainer.appendChild(getModalityCurtain());
  }
}

@Override
protected void onShow() {
 super.onShow();
 if (!el().isConnected()) {
  XDOM.getBody().insertBefore(getElement(), null);
 }
}

public void addTab( String text )
{
  Element button = DOM.createDiv();
  button.setClassName( getStylePrimaryName() + "-Item" );
  button.setInnerText( text );
  getElement().insertBefore( button, clear );
}

public void addTab( String text )
{
  Element button = DOM.createDiv();
  button.setClassName( getStylePrimaryName() + "-Item" );
  button.setInnerText( text );
  getElement().insertBefore( button, clear );
}

public void setPanel(JQMPanel panel) {
  removePanel();
  this.panel = panel;
  addLogical(panel);
  getElement().insertBefore(panel.getElement(), getElement().getFirstChild());
}

public void setPanel(JQMPanel panel) {
  removePanel();
  this.panel = panel;
  addLogical(panel);
  getElement().insertBefore(panel.getElement(), getElement().getFirstChild());
}

@Override
public void add(final int index, final String text) {
 final Element child = DOM.createElement(childTag);
 child.setInnerText(text);
 if (childStyleName != null) {
  child.addClassName(childStyleName);
 }
 getElement().insertBefore(child, getElement().getChild(index));
}

public void setPanel(JQMPanel panel) {
  removePanel();
  this.panel = panel;
  addLogical(panel);
  getElement().insertBefore(panel.getElement(), getElement().getFirstChild());
}

private void showModalityCurtain() {
  getModalityCurtain().getStyle().setZIndex(Z_INDEX);
  if (isShowing()) {
    getOverlayContainer().insertBefore(getModalityCurtain(),
        getElement());
  } else {
    getOverlayContainer().appendChild(getModalityCurtain());
  }
  Document.get().getBody().addClassName(MODAL_WINDOW_OPEN_CLASSNAME);
}

/**
 * Sets the header element, overriding an existing header if any.
 */
public void setHeader(HasJqmHeader header) {
  removeHeader();
  this.header = header;
  if (this.header == null) return;
  addLogical(header.getHeaderStage());
  if (panel == null) {
    getElement().insertBefore(header.getJqmHeader().getElement(), getElement().getFirstChild());
  } else {
    getElement().insertAfter(header.getJqmHeader().getElement(), panel.getElement());
  }
}

/**
 * Sets the header element, overriding an existing header if any.
 */
public void setHeader(HasJqmHeader header) {
  removeHeader();
  this.header = header;
  if (this.header == null) return;
  addLogical(header.getHeaderStage());
  if (panel == null) {
    getElement().insertBefore(header.getJqmHeader().getElement(), getElement().getFirstChild());
  } else {
    getElement().insertAfter(header.getJqmHeader().getElement(), panel.getElement());
  }
}

/**
 * Sets the header element, overriding an existing header if any.
 */
public void setHeader(HasJqmHeader header) {
  removeHeader();
  this.header = header;
  if (this.header == null) return;
  addLogical(header.getHeaderStage());
  if (panel == null) {
    getElement().insertBefore(header.getJqmHeader().getElement(), getElement().getFirstChild());
  } else {
    getElement().insertAfter(header.getJqmHeader().getElement(), panel.getElement());
  }
}