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Opener/Opened window referencing

Posted on 2007-11-21
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Medium Priority
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Last Modified: 2010-04-21
Hi all

I have 2 pages having a link to each other , a javascript code and a botton to pop window. Please see the code snippet for my js code.

When I click a button, a window is popped up.
1. If I refresh or navigate off the main page, the wpop is unaccessible.
2. If I open the link as a new window (by target=_blank or window.open or Shift+Click), the wpop in new window is unaccessible too.

I think frame can solve this problems, but there are some restrictions below.

Restrictions.
1. I do no create the main page and I cannot force the developers to use frames. If I want to use frame, I have to do something programmatically which is unable to guaratee that there is no target=_top in someone else's code.
2. The pages are not single page application. The pages must be able to refresh or navigate to other pages.

Please help.
var wpop = null;
 
function popWin()
{
  if (wpop==null || wpop=="undefined" || wpop.closed)
    wpop = window.open("popwin.html", "wpop", "height=200,width=150");
  wpop.focus();
}

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0
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Question by:StingRaY
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4 Comments
 
LVL 63

Expert Comment

by:Zvonko
ID: 20332865
You did not state how you want to access the wpop window after opener window refresh.
But here the solution how you can regain the access to previous opened popup:

var wpop = null;
function popWin(){
  if (wpop==null || wpop=="undefined" || wpop.closed){
    if(!wpop){
      wpop = window.open("", "wpop", "height=200,width=150");
    }
    if(!wpop.document.body.innerHTML){
      wpop = window.open("popwin.html", "wpop", "height=200,width=150");
    }
  } 
  wpop.focus();
}

Open in new window

0
 
LVL 15

Author Comment

by:StingRaY
ID: 20333012
Zvonko,

It seems working fine, but what if I close the opener and re-open it?
I've tried in ie7. The popup window is not reload nor focused. Only flashing in title bar.

Anyway, it does not work in FF. Any advice?

PS. I want to access the wpop using popWin() function only, just pop it up or access its global functions.
0
 
LVL 63

Accepted Solution

by:
Zvonko earned 2000 total points
ID: 20333187
Check this try-catch method:
var wpop = null;
function popWin(){
  if (!wpop){
     wpop = window.open("", "wpop", "height=200,width=150");
  }
  try{
    var wBody = wpop.document.body.innerHTML;
  } catch(e){
    var wBody = "";
  }
  if(wBody==""){
    wpop = window.open("popwin.html", "wpop", "height=200,width=150");
  }
  wpop.focus();
}

Open in new window

0
 
LVL 15

Author Closing Comment

by:StingRaY
ID: 31410516
Zvonko

Thanks for your help. The code is working perfectly.
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