--- loncom/homework/edit.pm	2011/11/19 13:45:36	1.137
+++ loncom/homework/edit.pm	2012/08/07 14:54:10	1.142
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # edit mode helpers
 #
-# $Id: edit.pm,v 1.137 2011/11/19 13:45:36 www Exp $
+# $Id: edit.pm,v 1.142 2012/08/07 14:54:10 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -401,10 +401,8 @@ sub insert_functionplotresponse {
     return '
 <functionplotresponse>
 <functionplotelements>
-<spline />
 </functionplotelements>
 <functionplotruleset>
-<functionplotrule />
 </functionplotruleset>
 </functionplotresponse>';
 }
@@ -429,6 +427,12 @@ sub insert_plotvector {
 <plotvector />';
 }
 
+sub insert_drawvectorsum {
+    return '
+<drawvectorsum />';
+}
+
+
 sub insert_functionplotrule {
     return '
 <functionplotrule />';
@@ -444,6 +448,20 @@ sub insert_functionplotvectorsumrule {
 <functionplotvectorsumrule />';
 }
 
+sub insert_functionplotcustomrule {
+    return '
+<functionplotcustomrule>
+<answer type="loncapa/perl">
+# &fpr_val("label"), &fpr_f($x), &fpr_dfdx($x), &fpr_d2fdx2($x)
+# ($xs,$xe,$ys,$ye)=&fpr_vectorcoords("Name"), ($x,$y)=&fpr_objectcoords("Name")
+# &fpr_vectorlength("Name"), &fpr_vectorangle("Name")
+ 
+# Return 0 or 1
+return 1;
+</answer>
+</functionplotcustomrule>';
+}
+
 sub insert_functionplotruleset {
     return '
 <functionplotruleset>
@@ -726,6 +744,7 @@ sub js_change_detection {
     my $unsaved=&mt("There are unsaved changes");
     return (<<SCRIPT);
 <script type="text/javascript">
+// <![CDATA[
 var clean = true;
 var is_submit = false;
 var still_ask = false;
@@ -744,6 +763,7 @@ function unClean() {
      clean=false;
 }
 window.onbeforeunload = compareForm;
+// ]]>
 </script>
 SCRIPT
 }
@@ -940,13 +960,16 @@ sub checked_arg {
 }
 
 sub text_arg {
-    my ($description,$name,$token,$size) = @_;
+    my ($description,$name,$token,$size, $class) = @_;
     my $result;
     if (!defined $size) { $size=20; }
     my $arg=$token->[2]{$name};
     $result=&mt($description).'&nbsp;<input name="'.&html_element_name($name).
-	'" type="text" value="'.$arg.'" size="'.$size.'" '.
-	&element_change_detection().'/>';
+	'" type="text" value="'.$arg.'" size="'.$size.'" ';
+    if (defined $class) {
+	$result .= 'class="' . $class . '" ';
+    }
+    $result .=	&element_change_detection().'/>';
     return '<span class="LC_nobreak">'.$result.'</span>';
 }