I capture a browser close action using the following code in an onunload option:

      var iX = window.document.body.offsetWidth + window.event.clientX ;
      var iY = window.event.clientY ;

      if (iX <= 30 && iY < 0 )
      {
         // code to do something
      }

How do I transfer control to another window or call a java method to handle logoff chores from my application?

Thanks for any help you can provide.



Steve Oliphant

Do you mean to cause another window to come on top?

onunload = surface;

function surface()
{
 opener.focus(); //to focus the opener
 child_window_name.focus(); //to focus a child window
}

Otherwise I'm confused...

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---Snib---
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Let me explain the situation. I'm using a portion of Oracle JDeveloper for a web application which generates a standard J2EE application following the model - view - controller framework.

The technology is called UIX (stands for User Interface XML) and generates java code on the fly.

When a user logs on, I add their name to a java object which persists on the controller side which runs on the server.

If a user clicks on the application logoff button, all is well. If they just close the browser window, then they are left in a logged on state as far as the server is concerned and will remain that way until the server side is restarted.

The only way, apparantly, to capture a window close is to add a uix tag called <uix:body>. So the complete code block above looks like so:

   <uix:body onUnload="

      var iX = window.document.body.offsetWidth + window.event.clientX ;
      var iY = window.event.clientY ;

      if (iX #60;= 30 #38;#38; iY #60; 0 )
      {
         alert('Logging User Off');
         alert('User Logged Off');
      }

   ">

The funny stuff in the if statement are escape sequences so that I can have < and & symbols in the javascript code. I put in the alerts to prove the code was working when I closed the browser by clicking on the X.

So, I can catch the browser close, but now I want to somehow get the information back to the server side that the user is no longer active and should be logged off. I have a java class called SmartLogin with a method called handleLogoff that will do the trick. If there is a way to call it directly, that would be great.

Another way would transfer control to a special not-displayed uix page which could call the java routine above.

I just don't know how to do it.

Thanks for any help you can give.



Steve Oliphant

Hey Steve,

I've been searching Google for a while, and found nothing.

However, I came up with this idea: on unload, cause a popup to come up that goes to logout.jsp (or whatever your logout page is, with the additional ?this=that&that=this if needed). Put your handleLogoff stuff (can you tell I don't know a thing about Java? :)) on that page. Then close the window immediately with JavaScript:

window.close();

So it would look like this:

-- page1.jsp --

<uix:body onUnload="

      var iX = window.document.body.offsetWidth + window.event.clientX ;
      var iY = window.event.clientY ;

      if (iX #60;= 30 #38;#38; iY #60; 0 )
      {
         alert('Logging User Off');
         alert('User Logged Off');
      }
      window.open("logout.jsp?this=that&that=this");
   ">

-- end page1.jsp --
-- logout.jsp --



<script language=javascript>window.close()</script>

-- end logout.jsp --

If the logout page prompts "This script is trying to close the window...", see the fourth post in this page.

I have a login script using PHP, it's lots easier than this. Closing the window ends the session. :)

Hope this helps you,

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---Snib---
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I've searched and searched for a way to capture the browser closing event and FINALLY there it is !!!!

function LogOff()
{
  var iX = window.document.body.offsetWidth + window.event.clientX ;
  var iY = window.event.clientY ;
  if (iX <= 30 && iY < 0 )
  {
     window.open("../LogOff.aspx")
  }
}