How to use

add

method

in

org.apache.wicket.markup.html.panel.Panel

@Override
public final MarkupContainer add(final Component... childs) {
  return super.add(childs);
}

@Override
public final Component add(final Behavior... behaviors) {
  return super.add(behaviors);
}

public Component superAdd(final Component... childs)
{
 return super.add(childs);
}

/**
 * @param id
 */
public SpanPanel(final String id)
{
 super(id);
 span = new WebMarkupContainer("span");
 super.add(span);
}

public CollapsiblePanel(final String id, final String heading)
{
 super(id);
 mainContainer = new WebMarkupContainer("mainContainer");
 super.add(mainContainer);
 if (heading != null) {
  headingLabel = new Label("heading", heading);
 }
 repeater = new RepeatingView("contentRepeater");
 mainContainer.add(repeater);
}

public final MarkupContainer add(final Fragment component) {
  String id = component.getId();
  if (get(id) != null) {
    return addOrReplace(component);
  } else {
    return super.add(component);
  }
}

/**
 * @param id
 */
public DivPanel(final String id)
{
 super(id);
 div = new WebMarkupContainer("div");
 super.add(div);
 repeater = new RepeatingView("child");
 div.add(repeater);
}

  @Override
  protected void populateItem(ListItem<Pair<String, Integer>> item) {
    Panel panel = tabMap.get(item.getModelObject());
    if (item.getIndex() == 0) {
      panel.add($b.classAppender("active"));
    }
    item.add(panel);
    panel.setOutputMarkupId(true);
  }
};

  @Override
  protected void populateItem(ListItem<Pair<String, Integer>> item) {
    Panel panel = tabMap.get(item.getModelObject());
    if(item.getIndex() == 0){
      panel.add($b.classAppender("active"));
    }
    item.add(panel);
    panel.setOutputMarkupId(true);
  }
};

/**
 * @param id
 */
public GridPanel(final String id, final GridType... gridTypes)
{
 super(id);
 div = new WebMarkupContainer("div");
 final String classAttr = GridType.gridTypesToClassString(gridTypes);
 if (classAttr != null) {
  div.add(AttributeModifier.append("class", classAttr));
 }
 super.add(div);
}

/**
 * Instantiates a new bootstrap modal, not visible. To show it see {@link #show()}.
 *
 * @param id the wicket:id
 */
public BootstrapModal(String id) {
  super(id);
  container = new WebMarkupContainer("container");
  container.setVisible(false);
  container.setOutputMarkupPlaceholderTag(true);
  
  add(new AjaxEventBehavior("hidden.bs.modal") {
    private static final long serialVersionUID = 1096860362709362617L;
    @Override
    protected void onEvent(AjaxRequestTarget target) {
      container.setVisible(false);
      target.add(container);
    }
  });
  add(new AjaxEventBehavior("shown.bs.modal") {
    private static final long serialVersionUID = 6569358950560898308L;
    @Override
    protected void onEvent(AjaxRequestTarget target) {
      container.setVisible(true);
      target.add(container);
    }
  });
  super.add(container);
}

/**
 * @param id
 */
public DivPanel(final String id, final GridSize divSize, final GridType... cssClasses)
{
 super(id);
 this.gridSize = divSize;
 div = new WebMarkupContainer("div");
 super.add(div);
 div.add(AttributeModifier.append("class", divSize.getClassAttrValue()));
 addCssClasses(cssClasses);
 repeater = new RepeatingView("child");
 div.add(repeater);
}

container.add(this);

container.add(this);

panel = new WebMarkupContainer("panel");
panel.setOutputMarkupId(true);
super.add(panel);
if (cssClasses != null) {
 for (final DivType cssClass : cssClasses) {