We solved more or less the same problem by a) reading the Ajax -> Links Example (get the starting point: use AjaxCallDecorator) b) finding/writing a js function to display a layer to cover all the visible area of the window + disallow any user clicks (similar behaviour as the layer behind the modal window) c) calling this js function before the ajax call d) calling some more js code to hide the extra layer after the ajax call
Step d is not needed when u r using setResponsePage. I think using target.append/prependJavascript might do the job as well. Regards, Konstantinos salmas wrote: > > > It seems that this is a common bug, there is a thread titled > "Doubleclicking on a refreshable Ajax button" which appears to be similar. > I am using an AjaxSubmitButton in my application and double clicks and > fast clicks are an issue. > I have followed the sugggestions to use javascript to disable the button > between clicks and while this reduced the frequency it still does occur > from time to time. We cannot move to my application to prodution like this > and my manager does not want this application to have to go to a newer > wicket since we'll have to start from scratch with testing. Would it be > possible to release a patch for older releases such as wicket-1.2.6? This > would be huge for my project. > > Regards > > > serban.balamaci wrote: >> >> Hi. Well in my case this error apeared when the user clicked on a link >> that was directing the user to the next page, and while the user did not >> wait for the other page to load, or he thought that he did not press the >> mouse button and he clicked again. The server saw that the >> component(link) was no longer in the the new page and therefore the >> nullpointer. (Or that's how i explained it to myself). I got around this >> by disabling the link after the clicking. >> >> >> >> salmas wrote: >>> >>> Every once in awhile if I am clicking around for awhile in the UI of my >>> application I get the following error. What causes this? >>> >>> java.lang.NullPointerException >>> at >>> wicket.request.compound.DefaultRequestTargetResolverStrategy.resolveListenerInterfaceTarget(DefaultRequestTargetResolverStrategy.java:295) >>> at >>> wicket.request.compound.DefaultRequestTargetResolverStrategy.resolveRenderedPage(DefaultRequestTargetResolverStrategy.java:228) >>> at >>> wicket.request.compound.DefaultRequestTargetResolverStrategy.resolve(DefaultRequestTargetResolverStrategy.java:153) >>> at >>> wicket.request.compound.AbstractCompoundRequestCycleProcessor.resolve(AbstractCompoundRequestCycleProcessor.java:48) >>> at wicket.RequestCycle.step(RequestCycle.java:992) >>> at wicket.RequestCycle.steps(RequestCycle.java:1084) >>> at wicket.RequestCycle.request(RequestCycle.java:454) >>> at wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:219) >>> at wicket.protocol.http.WicketServlet.doPost(WicketServlet.java:262) >>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) >>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) >>> at >>> weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072) >>> at >>> weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465) >>> at >>> weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:348) >>> at >>> weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6981) >>> at >>> weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) >>> at >>> weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121) >>> at >>> weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892) >>> at >>> weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2766) >>> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224) >>> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183) >>> >> >> > > -- View this message in context: http://www.nabble.com/Why-dioes-this-error-occur--tp13633697p14627974.html Sent from the Wicket - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
