I am trying to create a link that will replace one panel with
another
on the page. This seems as though it should be an easy task but
after
many attempts and searching the net for examples I have yet to
get it
working so the replacement can happen more than one without the
component becoming orphaned. On the second replace attempt i get the
following exception. Anyone have the solution?
Thank you,
Anthony
java.lang.IllegalStateException: This method can only be called on a
component that has already been added to its parent.
at org.apache.wicket.Component.replaceWith(Component.java:
2266)
at com.pinwise.pinbase.web.components.links.SecurePanelLink
$4.onClick(SecurePanelLink.java:142)
at org.apache.wicket.markup.html.link.Link.onLinkClicked
(Link.java:222)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.wicket.RequestListenerInterface.invoke
(RequestListenerInterface.java:186)
=====================================
=====================================
public UserPanel(String id) {
super(id);
UserFormPanel userFormPanel = new
UserFormPanel("userFormPanel");
add( userFormPanel );
List<IColumn> columns = new ArrayList<IColumn>();
final Model m = new Model(userFormPanel);
columns.add(new PropertyColumn(new Model("Actions"), "id")
{
public void populateItem(Item cellItem,
String
componentId, final
IModel model)
{
EditActionPanel panel = new
EditActionPanel(componentId, model);
panel.add(
SecurePanelLink.createSecurePanelLink( "edit", m,
UserFormPanel.class, model ) );
cellItem.add( panel );
}
});
columns.add(new PropertyColumn(new Model("Username"),
"username", "username"));
columns.add(new PropertyColumn(new Model("First Name"),
"firstName", "firstName"));
columns.add(new PropertyColumn(new Model("Last Name"),
"lastName", "lastName"));
add(new DefaultDataTable("table", columns, new
SortableUserDataProvider(), 10));
}
====================================
SecurePanelLink
====================================
public class SecurePanelLink extends Link implements
ISecureComponent {
/**
*
*/
private static final long serialVersionUID = 1L;
protected IPanelLink panelLink;
/**
* @param id
* @param c
*/
public SecurePanelLink(String id, final Class c)
{
super(id);
// Ensure that c is a subclass of Panel
if (!Panel.class.isAssignableFrom(c))
{
throw new IllegalArgumentException("Class
" + c +
" is not a
subclass of Panel");
}
this.panelLink = createIPanelLink( id, c );
setSecurityCheck(new LinkSecurityCheck(this, c));
}
public SecurePanelLink(String id, final Class c, Model
existingPanel)
{
super(id);
// Ensure that c is a subclass of Panel
if (!Panel.class.isAssignableFrom(c))
{
throw new IllegalArgumentException("Class
" + c +
" is not a
subclass of Panel");
}
this.panelLink = createIPanelLink( id, c );
setSecurityCheck(new LinkSecurityCheck(this, c));
}
private IPanelLink createIPanelLink( String id, final
Class c ) {
return new IPanelLink()
{
private static final long
serialVersionUID = 1L;
public Panel getPanel( String id )
{
// Create panel using panel factory
return getPanelFactory().newPanel
(id, c );
}
public Panel getPanel( String id, IModel
model)
{
// Create panel using panel factory
return getPanelFactory().newPanel
(id, c,
model);
}
public Panel getPanel( Panel panel,
IModel model)
{
// Create panel using panel factory
return getPanelFactory().newPanel(
panel.getId(), c, model);
}
public Class getPanelIdentity()
{
return c;
}
};
}
/**
*
*/
public static SecurePanelLink createSecurePanelLink
( String id,
Class clazz ) {
return new SecurePanelLink( id, clazz ) {
/**
*
*/
private static final long
serialVersionUID = 1L;
public void onClick() {
Panel panel = ((Panel)findParent(
Panel.class));
panel.replaceWith
( panelLink.getPanel(
panel.getId() ) );
}
};
}
/**
*
*/
public static SecurePanelLink createSecurePanelLink
( String id,
Class newPanel, final IModel model ) {
return new SecurePanelLink( id, newPanel ) {
/**
*
*/
private static final long
serialVersionUID = 1L;
public void onClick() {
Panel panel = ((Panel)findParent(
Panel.class));
panel.replaceWith
( panelLink.getPanel(
panel.getId(), model ) );
}
};
}
/**
*
*/
public static SecurePanelLink createSecurePanelLink
( String id,
final Model existingPanel, Class newPanel, final IModel model ) {
return new SecurePanelLink( id, newPanel,
existingPanel )
{
/**
*
*/
private static final long
serialVersionUID = 1L;
public void onClick() {
Panel p =
(Panel)existingPanel.getObject();
Panel panel = panelLink.getPanel
((Panel)existingPanel.getObject
(), model );
panel.setOutputMarkupId(true);
p.getParent().replace( panel );
p=panel;
}
};
}
