Make prepareDD and hasClassName more robust to handle case

where a TextNode (like whitespace) is the firstChild of a node.


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@28301 71c3de6d-444a-0410-be80-ed276b4c234a

war/resources/scripts/hudson-behavior.js

@@ -381,7 +381,7 @@ var hudsonRules = {
             var h = e;
             // locate a handle
             while(!Element.hasClassName(h,"dd-handle"))
-                h = h.firstChild;
+                h = h.firstChild ? h.firstChild : h.nextSibling;
             dd.setHandleElId(h);
         }
         var withDragDrop = Element.hasClassName(e,"with-drag-drop");

war/resources/scripts/prototype.js

@@ -1534,7 +1534,7 @@ Element.Methods = {
   hasClassName: function(element, className) {
     if (!(element = $(element))) return;
     var elementClassName = element.className;
-    if (elementClassName.length == 0) return false;
+    if (!elementClassName || elementClassName.length == 0) return false;
     if (elementClassName == className ||
         elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
       return true;
@@ -3315,4 +3315,4 @@ if (Prototype.Browser.WebKit) {
   }
 }
 
-Element.addMethods();
\ No newline at end of file
+Element.addMethods();