[Zope3-checkins] SVN: Zope3/trunk/src/zope/formlib/ avoid some of the JavaScript errors; forms that contain more than one field

[Fred L. Drake, Jr.]

Log message for revision 39875:
  avoid some of the JavaScript errors; forms that contain more than one field
  of a given name (such as checkboxes or radio buttons) can provide a NodeList
  instead of a single input object; that needs to be handled specially
  
  use "field.length == null" instead of "field instanceof NodeList" since
  (appearantly) NodeList is in different namespace on different browsers, or
  doesn't exist on MSIE
  

Changed:
  U   Zope3/trunk/src/zope/formlib/pageform.pt
  U   Zope3/trunk/src/zope/formlib/subpageform.pt

-=-
Modified: Zope3/trunk/src/zope/formlib/pageform.pt
===================================================================
--- Zope3/trunk/src/zope/formlib/pageform.pt	2005-11-03 15:57:31 UTC (rev 39874)
+++ Zope3/trunk/src/zope/formlib/pageform.pt	2005-11-03 16:01:28 UTC (rev 39875)
@@ -20,7 +20,16 @@
   // ob is the label element
   var field = ob.form[ob.htmlFor];
   if (field) {
-    field.style.visibility = state && 'hidden' || 'visible';
+    var viz = state && 'hidden' || 'visible';
+    if (field.length == null) {
+      field.style.visibility = viz;
+    }
+    else {
+      for (var i = 0; i < field.length; ++i) {
+        var e = field.item(i);
+        e.style.visibility = viz;
+      }
+    }
     var help = document.getElementById("field-help-for-" + field.name);
     if (help) {
       help.style.visibility = state && 'visible' || 'hidden';

Modified: Zope3/trunk/src/zope/formlib/subpageform.pt
===================================================================
--- Zope3/trunk/src/zope/formlib/subpageform.pt	2005-11-03 15:57:31 UTC (rev 39874)
+++ Zope3/trunk/src/zope/formlib/subpageform.pt	2005-11-03 16:01:28 UTC (rev 39875)
@@ -7,7 +7,16 @@
   // ob is the label element
   var field = ob.form[ob.htmlFor];
   if (field) {
-    field.style.visibility = state && 'hidden' || 'visible';
+    var viz = state && 'hidden' || 'visible';
+    if (field.length == null) {
+      field.style.visibility = viz;
+    }
+    else {
+      for (var i = 0; i < field.length; ++i) {
+        var e = field.item(i);
+        e.style.visibility = viz;
+      }
+    }
     var help = document.getElementById("field-help-for-" + field.name);
     if (help) {
       help.style.visibility = state && 'visible' || 'hidden';