--- rat/lonwrapper.pm	2023/11/18 21:45:11	1.84
+++ rat/lonwrapper.pm	2023/12/31 21:45:03	1.86
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Wrapper for external and binary files as standalone resources
 #
-# $Id: lonwrapper.pm,v 1.84 2023/11/18 21:45:11 raeburn Exp $
+# $Id: lonwrapper.pm,v 1.86 2023/12/31 21:45:03 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -153,13 +153,7 @@ sub wrapper {
 #
 
     unless ($clientmobile || ($exttool eq 'window') || ($exttool eq 'tab') || $uselink) {
-        $headjs = '
-<script type="text/javascript">
-// <![CDATA[
-var LCnotready = 0;
-var LCresizedef = 0;
-// ]]>
-</script>'."\n";
+        $headjs = &Apache::loncommon::iframe_wrapper_headjs();
     }
 
     my $startpage = &Apache::loncommon::start_page('Menu',$headjs,$args).$countdown.$donemsg;
@@ -302,49 +296,8 @@ ENDLINK
         $linktext = &mt('Link to resource');
         return $startpage.&create_link($url,$anchor,$title,$linktext).$endpage;
     } else {
-        my $offset = 5;
-        &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['inhibitmenu']);
-        if (($env{'form.inhibitmenu'} eq 'yes') || ($env{'form.only_body'})) {
-            $offset = 0;
-        }
-        my $script = &Apache::lonhtmlcommon::scripttag(<<SCRIPT);
-        \$(document).ready( function() {
-            \$(window).unbind('resize').resize(function(){
-                var header = null;
-                var offset = $offset;
-                var height = 0;
-                var hdrtop = 0;
-                if (\$('div.LC_head_subbox:first').length) {
-                    header = \$('div.LC_head_subbox:first');
-                    offset = 9;
-                } else {
-                    if (\$('#LC_breadcrumbs').length) {
-                        header = \$('#LC_breadcrumbs');
-                    }
-                }
-                if (header != null && header.length) {
-                    height = header.height();
-                    hdrtop = header.position().top;
-                }
-                var pos = height + hdrtop + offset;
-                \$('.LC_iframecontainer').css('top', pos);
-            });
-            LCresizedef = 1;
-            if (LCnotready == 1) {
-                LCnotready = 0;
-                \$(window).trigger('resize');
-            }
-        });
-        window.onload = function(){
-             if (LCresizedef) {
-                 LCnotready = 0;
-                 \$(window).trigger('resize');
-             } else {
-                 LCnotready = 1;
-             }
-        };
-SCRIPT
         # javascript will position the iframe if window was resized (or zoomed)
+        my $script = &Apache::loncommon::iframe_wrapper_resizejs();
         my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
         return <<ENDFRAME;
         $startpage
@@ -584,7 +537,9 @@ described at http://www.lon-capa.org.
 
 =over
 
-=item wrapper($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,$linktext,$explanation,$title,$width,$height,$reuse,$is_supp)
+=item wrapper()
+
+Args: $r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,$linktext,$explanation,$title,$width,$height,$reuse,$is_supp
 
 =over
 
@@ -689,6 +644,36 @@ of all external resource instances in a
 
 Returns markup for the entire page.
 
+=item create_link()
+
+Args: $url,$anchor,$title,$linktext
+
+=over
+
+=item $url
+
+URL to link to
+
+=item $anchor
+
+optional.  Will be the anchor to append to the URL, if there is one.
+
+=item $title
+
+optional. If provided will be the title displayed above the link. If
+one is not provided, then $env{'form.title'} will be used, unless empty.
+
+=item $linktext
+
+The text to inlcude between the <a href="$url"> and </a> tags.
+
+=back
+
+Returns HTML needed to show a link which can be followed to display the
+part of the original URL following the initial /adm/wrapper part 
+in the original request, in the case where an iframe is not going to be
+used to embed the content available at the URL in the existing page.
+
 =item handler()
 
 Content handler for requests for: /adm/wrapper/...