Martin Grigorov-4 wrote
>
> Pastebin you code.
>
While cleaning up the code to post it here I found a timer.stop() where it
should not be. After removing it, everything works as it should do. That is,
I create a new timer whenever the form is submitted, and add it to my
textarea component. The timer starts working, as well as the background
thread. When the latter is finished, I stop the timer and remove it from the
textarea from within the timer's onTimer() method.
I have noted that I need to stop the timer before I remove it. Otherwise I
get the exception below. It is really not a problem to stop the timer, but
since I am removing it anyway, I wonder if it should strictly be necessary
to do it.
Cheers,
Humberto
ERROR - DefaultExceptionMapper - Unexpected error occurred
org.apache.wicket.WicketRuntimeException: Method onRequest of interface
org.apache.wicket.behavior.IBehaviorListener targeted at
com.telenor.claudia.web.gui.Index$StatusTimer@95ef17 on component [TextArea
[Component id = feedbackPanel]] threw an exception
at
org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:270)
at
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:241)
at
org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:255)
at
org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:234)
at
org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:750)
at
org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
at
org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:252)
at
org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:209)
at
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:280)
at
org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:218)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:260)
... 25 more
Caused by: java.lang.IllegalStateException: Behavior must be added to
component before its id can be generated. Behavior:
com.telenor.claudia.web.gui.Index$StatusTimer@95ef17, Component:
org.apache.wicket.Behaviors@d91987
at org.apache.wicket.Behaviors.getBehaviorId(Behaviors.java:252)
at org.apache.wicket.Component.getBehaviorId(Component.java:4436)
at org.apache.wicket.Component.urlFor(Component.java:3292)
at
org.apache.wicket.behavior.AbstractAjaxBehavior.getCallbackUrl(AbstractAjaxBehavior.java:89)
at
org.apache.wicket.ajax.AbstractAjaxTimerBehavior.getCallbackScript(AbstractAjaxTimerBehavior.java:125)
at
org.apache.wicket.ajax.AbstractAjaxTimerBehavior.getJsTimeoutCall(AbstractAjaxTimerBehavior.java:118)
at
org.apache.wicket.ajax.AbstractAjaxTimerBehavior.respond(AbstractAjaxTimerBehavior.java:155)
at
org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:316)
... 29 more
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