You have to make some assumptions here, but you can basically notify the user
when the server session has ended with the following in a PhaseListener:
@Observer("org.jboss.seam.beforePhase")
| public void beforePhase(PhaseEvent event)
| {
| if(event.getPhaseId() == PhaseId.RESTORE_VIEW)
| {
| HttpServletRequest request =
| (HttpServletRequest) FacesContext.getCurrentInstance()
| .getExternalContext().getRequest();
|
| if(request.getRequestedSessionId() != null
| && request.getSession().isNew())
| Events.instance().raiseEvent("org.myOrg.sessionExpired");
| ...
Based on general cookie settings this will raise the event when the user still
has the browser window open, the http session expired, and the user tries to
access the app. If the user closes and reopens the browser to start the
application, the event will not be raised.
This of course makes the assumption that cookies expire when the browser
session is ended (which is generally the case). Good luck.
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