RE: [flexcoders] Catching the Closing of the Browser in Flex

Mon, 27 Jun 2005 08:13:26 -0700

Thanks much, thatis a great idea. I will look into this and hopefully it should work.
 
Thanks,
 
Barry

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Abdul Qabiz
Sent: 27 June 2005 15:39
To: [email protected]
Subject: RE: [flexcoders] Catching the Closing of the Browser in Flex

Hi,
 
Another way is to catch  the unload events of browser in _javascript_. I am not sure, if it works consistently in all browsers but IE and Firefox 0.9 version support it. So make sure of such things before using...
 
 
Search for onBeforeUnload and onUnload events for browser.
 
The logic could be:
 
- User tries to close the browser
- you capture the event in onBeforeUnload, show a _javascript_ alert to user that "s/he should save data before existing, click Ok to save or Cancel to close"..
- If user clicks Ok, s/he on same, send a notification to Flex app using (_javascript_ or _javascript_FlashKit).
- Flex app saves data to DB and closes the browser when done...
 
 
Does that sound good? you will need to test this approach properly.
 
Link for a demo of onBeforeUnload(..)
 
http://www.4guysfromrolla.com/demos/OnBeforeUnloadDemo1.htm
 
http://www.4guysfromrolla.com/webtech/100604-1.shtml
 
You can use the technique mentioned there....
 
Link for _javascript_-Flash-Integration-Kit: http://www.macromedia.com/go/flashjavascript/
Related post on Mike Chembers blog: http://weblogs.macromedia.com/mesh/archives/2005/06/flash_javascrip.cfm
 
 
 
-abdul
 

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Dirk Eismann
Sent: Monday, June 27, 2005 7:52 PM
To: [email protected]
Subject: RE: [flexcoders] Catching the Closing of the Browser in Flex

You could use the application server's session management - the user session will time out by default after a given amount of inactivity so you could probably hook in there.
 
If you need some kind of real-time logging then you might want to take a look at the Flash Comm Server - this way you could establish a persistent connection between client and server. If the browser is closed the connection to the Flash Comm Server will be closed and the Flash Comm Server in turns could send a Remoting request to your backend and inform it to write to the db.
 
One implication is that the Flash Comm Server uses the RTMP protocol which may not get through a restricted firewall. It's also possible to tunnel RTMP through HTTP but again, a packet filter could suppress this traffic.
 
Dirk.

Von: [email protected] im Auftrag von Barry Corrigan
Gesendet: Mo 27.06.2005 16:02
An: [email protected]
Betreff: [flexcoders] Catching the Closing of the Browser in Flex

Hello all,
 
I wish to write to a database whenever a user logs out. When the browser is closed, this is an implicit logout: the user can click the close icon on the title bar, go to File-Exit in the browser's menu, press Alt-F4, browse to another page, etc. It would be nice to be able to catch when this happens, so as to write the log and logout the user.
 
I have tried using the unload event in the Application tag, but this does not seem to work.
 
Does anybody have any other ideas? Is there soemthing obvious I am missing?
 
Thanks a lot,
 
Barry.


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