svn commit: r560523 - /wicket/trunk/jdk-1.4/wicket/src/main/java/org/apache/wicket/markup/html/tree/res/tree.js

[knopp]

Author: knopp
Date: Sat Jul 28 01:54:07 2007
New Revision: 560523

URL: http://svn.apache.org/viewvc?view=rev&rev=560523
Log:
Better DOM state corruption detection 

Modified:
    
wicket/trunk/jdk-1.4/wicket/src/main/java/org/apache/wicket/markup/html/tree/res/tree.js

Modified: 
wicket/trunk/jdk-1.4/wicket/src/main/java/org/apache/wicket/markup/html/tree/res/tree.js
URL: 
http://svn.apache.org/viewvc/wicket/trunk/jdk-1.4/wicket/src/main/java/org/apache/wicket/markup/html/tree/res/tree.js?view=diff&rev=560523&r1=560522&r2=560523
==============================================================================
--- 
wicket/trunk/jdk-1.4/wicket/src/main/java/org/apache/wicket/markup/html/tree/res/tree.js
 (original)
+++ 
wicket/trunk/jdk-1.4/wicket/src/main/java/org/apache/wicket/markup/html/tree/res/tree.js
 Sat Jul 28 01:54:07 2007
@@ -20,19 +20,36 @@
 
 Wicket.Tree = { };
 
+Wicket.Tree.askForReload = function() {
+       if (confirm("There was a problem updating the tree. It might be caused 
be the old page being cached by the browser. \n"+
+                   "It is recommended to reload the page. Do you want to 
reload it?")) {
+               window.location.reload();
+       }
+}
+
 Wicket.Tree.removeNodes = function(prefix, nodeList) {
+       var problem = false;
        for (var i = 0; i < nodeList.length; i++) {
                var e = document.getElementById(prefix + nodeList[i]);
                if (e != null) {
                        e.parentNode.removeChild(e);
                } else {
                        // while developing alert a warning
-                       alert("Can't find node with id " + prefix + nodeList[i] 
+ ". This shouldn't happen - possible bug in tree?");
+                       problem = true;
+                       Wicket.Log.error("Can't find node with id " + prefix + 
nodeList[i] + ". This shouldn't happen - possible bug in tree?");
                }
        }
+       if (problem == true) {
+               Wicket.Tree.askForReload();
+       }
 }
 
 Wicket.Tree.createElement = function(elementId, afterId) {
+       var existing = Wicket.$(elementId);
+       if (typeof(existing) != "undefined" && exiting != null) {
+               Wicket.Tree.askForReload();
+       }
+
        var after = document.getElementById(afterId);
        var newNode = document.createElement("script");
        newNode.setAttribute("id", elementId);