#33 Conversations list throwing exception when clicked on

[Amit Chatterjee]

When a cell in the conversation list is being changed by the chat application (for example, an user is being added to a conference and, as a result, the application is updating the cell), if the user clicks on the cell, the following exception is raised. The cell pretty much becomes unusable from that point and no operations can be performed on it.. The exception trace is only available in the hosted mode. In the Javascript mode, it will throw a related Javascript exception.

Sun Oct 21 07:43:35 EDT 2012 com.quikj.ace.web.client.Ace_web
SEVERE: Exception java.lang.IllegalStateException occured - The Cell Widget is attempting to render itself within the render loop. This usually happens when your render code modifi
es the state of the Cell Widget then accesses data or elements within the Widget. ()
java.lang.IllegalStateException: The Cell Widget is attempting to render itself within the render loop. This usually happens when your render code modifies the state of the Cell Wi
dget then accesses data or elements within the Widget.
at com.google.gwt.user.cellview.client.HasDataPresenter.resolvePendingState(HasDataPresenter.java:1158)
at com.google.gwt.user.cellview.client.HasDataPresenter.access$3(HasDataPresenter.java:1130)
at com.google.gwt.user.cellview.client.HasDataPresenter$2.execute(HasDataPresenter.java:1055)
at com.google.gwt.core.client.impl.SchedulerImpl$Task$.executeScheduled$(SchedulerImpl.java:50)
at com.google.gwt.core.client.impl.SchedulerImpl.runScheduledTasks(SchedulerImpl.java:228)
at com.google.gwt.core.client.impl.SchedulerImpl.flushFinallyCommands(SchedulerImpl.java:327)
at com.google.gwt.core.client.impl.Impl.exit(Impl.java:237)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:228)
at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
at java.lang.Thread.run(Thread.java:619)
2012-10-21 07:43:35,590 INFO APPLSERV:160 - Log from client: ep_1347882608140_0
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4
Level: SEVERE
Logger: com.quikj.ace.web.client.Ace_web
Message: Exception java.lang.IllegalStateException occured - The Cell Widget is attempting to render itself within the render loop. This usually happens when your render code modif
ies the state of the Cell Widget then accesses data or elements within the Widget. ()