--- loncom/interface/lonmenu.pm	2017/09/10 00:11:27	1.479
+++ loncom/interface/lonmenu.pm	2017/09/29 19:18:10	1.480
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Routines to control the menu
 #
-# $Id: lonmenu.pm,v 1.479 2017/09/10 00:11:27 raeburn Exp $
+# $Id: lonmenu.pm,v 1.480 2017/09/29 19:18:10 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1114,8 +1114,9 @@ sub prepare_functions {
     }
 
     my $editbutton = '';
+    my $viewsrcbutton = '';
 #
-# Determine whether or not to display 'Edit' icon/button
+# Determine whether or not to display 'Edit' or 'View Source' icon/button
 #
     if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
         my $file=&Apache::lonnet::declutter($env{'request.filename'});
@@ -1199,6 +1200,26 @@ sub prepare_functions {
                                                   $forceedit,$forceview,$forcereg,
                                                   $hostname);
                 }
+                if ((($cfile eq '') || (!$editbutton)) &&
+                    ($resurl =~ /$LONCAPA::assess_re/)) {
+                    my $showurl = &Apache::lonnet::clutter($resurl);
+                    if ((&Apache::lonnet::allowed('cre','/')) &&
+                        (&Apache::lonnet::metadata($resurl,'sourceavail') eq 'open')) {
+                        $viewsrcbutton = 1;
+                    } elsif (&Apache::lonnet::allowed('vxc',$env{'request.course.id'})) {
+                        if ($showurl =~ m{^\Q/res/$cdom/\E($match_username)/}) {
+                            my $auname = $1;
+                            if (($env{'request.course.adhocsrcaccess'} ne '') &&
+                                (grep(/^\Q$auname\E$/,split(/,/,$env{'request.course.adhocsrcaccess'})))) {
+                                $viewsrcbutton = 1;
+                            }
+                        }
+                    }
+                    if ($viewsrcbutton) {
+                        &switch('','',6,1,'pcstr.png','View Source','resource[_2]','open_source()',
+                                'View source code');
+                    }
+                }
             }
         }
     }
@@ -1276,7 +1297,7 @@ sub prepare_functions {
         &advtools_crumbs(@inlineremote);
         return $editbutton;
     } elsif ($env{'request.registered'}) {
-        return $editbutton;
+        return $editbutton || $viewsrcbutton;
     } else {
         if (ref($bread_crumbs) eq 'ARRAY') {
             if (@inlineremote > 0) {
@@ -2083,6 +2104,12 @@ function open_StoredLinks_Import(rat) {
    newWin.focus();
 }
 
+function open_source() {
+   var url = escape(window.location.pathname);
+   sourcewin=window.open('/adm/source?inhibitmenu=yes&viewonly=1&filename='+url,'LONsource',
+                         'height=500,width=600,resizable=yes,location=no,menubar=no,toolbar=no,scrollbars=yes');
+}
+
 (function (\$) {
   \$(document).ready(function () {
     \$.single=function(a){return function(b){a[0]=b;return a}}(\$([1]));