Hi everyone, I'm having an issue with the AjaxSelfUpdatingTimerBehavior and panels in my page. The thing is I have a panel that is switched via ajax. All the others parts of my page remains without change. In a specific panel (one of those being changed) I added an AjaxSelfUpdatingTimerBehavior. It works fine, but when i replace the panel with a new instance of the panel a new timer its appended to the page. So, after that I have two timers refreshing my page. If the panel is replaced another time, a third timer come up. But, if the original panel is replaced with other panel, this exception is thrown:
Root cause: java.lang.NullPointerException at org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:96) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1240) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1319) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418) at org.apache.wicket.RequestCycle.request(RequestCycle.java:544) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:456) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:289) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:295) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:827) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:511) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:210) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379) at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:226) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442) Any idea to fix this issue? How should I do to make the panel changeable without having this issue? Thanks in advance, Cheers! -- Mauro Ciancio
