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user idle time

3 replies on 1 page. Most recent reply: Dec 7, 2002 8:51 AM by Thomas SMETS

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Christina

Posts: 2
Nickname: christina3
Registered: Dec, 2002

user idle time Posted: Dec 5, 2002 2:53 PM
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Hello,

Is there a way to tell how long a user has been idle from their computer, whether or not their applet is minimized? Thanks so much for your help!

Christina


Venugopal Bandari

Posts: 5
Nickname: bandari
Registered: Dec, 2002

Re: user idle time Posted: Dec 6, 2002 1:55 AM
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hai,

take a instance variable long (ex: long t1), in Applet init initialize to System.currentMillis(); wait for a event to occur in ur Applet or Application. event may be focus, key, mouse etc.., in event handler get the System.currentMillis(); (ex: t2) and substract this with instance long variable which u initilized in init. then u will get the idle time of first event. i.e., idle time = t2-t1. then assign t1 to t2=> t1 = t2. then wait for next event to occur.

ok..have u got it..

Christina

Posts: 2
Nickname: christina3
Registered: Dec, 2002

Re: user idle time Posted: Dec 6, 2002 6:01 AM
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Thank you for your help. I was actually wanting to make an applet stop working if the user has been idle from their computer for a certain period of time. So if they haven't touched their keyboard or mouse (whether or not they were interacting with the applet or another application the last time they were using their computer).

Thanks :)

Thomas SMETS

Posts: 307
Nickname: tsmets
Registered: Apr, 2002

Re: user idle time Posted: Dec 7, 2002 8:51 AM
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Venugopal's solution has two draw-backs I reckon, is that you need to listen for all the possible events on all the possible elements of you application. I would consider to limit your self in say (window is not the focused window).

This is not the worst (sorry Venugopal :-( nothing personnal). The answer given means you need to wait on the wake up event to know if you can put your application asleep :-((

I think you need to use a background thread to monitor the activity of the system... if you want to be able to put your application asleep while the app has the focus. If it's only when the App is not in focus,then it might be doable without !

Have a nice day,

Thomas SMETS,
SCJP2 - Brussels

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