So actually I transformed that into portal eventing object. Now there are : base page event : | public abstract class PageEvent extends PortalNodeEvent | { | ... | } | page render event | public class PageRenderEvent extends PageEvent | { | ... | } | provide access to a portion of the navigational state managed by the portal : | public interface NavigationalStateContext | { | WindowState getWindowState(PortalNode window) throws IllegalArgumentException; | void setWindowState(PortalNode window, WindowState windowState) throws IllegalArgumentException; | Mode getMode(PortalNode window) throws IllegalArgumentException; | void setMode(PortalNode window, Mode mode) throws IllegalArgumentException; | } | I have recoded the previous interceptor I did (and removed it) using the public API (so it can be considered as a supported feature and will not break in the future with the 2.x versions). The example has been commited as org.jboss.portal.core.portlet.test.event.WindowConstraintEventListener and is a little bit complex (because your use case is very special) so I will not list it here. You can find it in the core-samples module in trunk. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4004991#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...