[Tikiwiki-cvs/svn] SF.net SVN: tikiwiki:[29623] branches/6.x/lib/jquery_tiki/tiki-jquery.js

[<pk...@us...>]

Revision: 29623
          http://tikiwiki.svn.sourceforge.net/tikiwiki/?rev=29623&view=rev
Author:   pkdille
Date:     2010-09-26 06:29:13 +0000 (Sun, 26 Sep 2010)

Log Message:
-----------
[bp/r29589] [FIX] Solve bugs of variables 'undefined is null or not object' at unloading of the page with IE

Modified Paths:
--------------
    branches/6.x/lib/jquery_tiki/tiki-jquery.js

Modified: branches/6.x/lib/jquery_tiki/tiki-jquery.js
===================================================================
--- branches/6.x/lib/jquery_tiki/tiki-jquery.js	2010-09-26 03:15:53 UTC (rev 29622)
+++ branches/6.x/lib/jquery_tiki/tiki-jquery.js	2010-09-26 06:29:13 UTC (rev 29623)
@@ -1698,4 +1698,31 @@
 		};
 })($jq);
 
-
+// Prevent memory leaks in IE
+// Window isn't included so as not to unbind existing unload events
+// More info:
+//	- http://isaacschlueter.com/2006/10/msie-memory-leaks/
+if ( window.attachEvent && !window.addEventListener ) {
+	window.attachEvent("onunload", function() {
+		for ( var id in jQuery.cache ) {
+			var item = jQuery.cache[ id ];
+			if ( item.handle ) {
+				if ( item.handle.elem === window ) {
+					for ( var type in item.events ) {
+						if ( type !== "unload" ) {
+							// Try/Catch is to handle iframes being unloaded, see #4280
+							try {
+								jQuery.event.remove( item.handle.elem, type );
+							} catch(e) {}
+						}
+					}
+				} else {
+					// Try/Catch is to handle iframes being unloaded, see #4280
+					try {
+						jQuery.event.remove( item.handle.elem );
+					} catch(e) {}
+				}
+			}
+		}
+	});
+}


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