Best way to set up an idle timer

[Devin Asay]

I want to write a routine in my stack that will automatically log the 
user out after X minutes of inactivity, in the same way the screen 
saver will kick in after X minutes. Any mouse or keyboard event would 
reset the timer. I've been playing with the idle handler like this:

global startSeconds

on idle
  if startSeconds is empty then
    put the seconds into startSeconds
  end if
  if the seconds - startSeconds > 5 * 60 then timeOut -- for a 5 min. 
timeout
end idle

on timeOut
  answer "time's up!"
  put empty into startSeconds
end timeOut
The problem with this approach of course is there is no way to reset 
the startSeconds unless the timeOut handler runs. I don't want to have 
to trap every single mouse and keyboard event to reset startSeconds.

I know there has to be an easy way to do this. My brain is just not 
grasping it today.

Devin Asay
Humanities Technology and Research Support Center
Brigham Young University
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