--- loncom/interface/lonmainmenu.pm	2021/06/07 06:05:49	1.13
+++ loncom/interface/lonmainmenu.pm	2025/03/25 01:02:59	1.14
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # displays the main menu
 #
-# $Id: lonmainmenu.pm,v 1.13 2021/06/07 06:05:49 raeburn Exp $
+# $Id: lonmainmenu.pm,v 1.14 2025/03/25 01:02:59 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -44,7 +44,7 @@ use Apache::lonlocal;
 sub handler {
     my $r = shift;
 
-    # Check for critical messages and redirect if present.  
+    # Check for critical messages and redirect if present.
     my ($redirect,$url) = &Apache::loncommon::critical_redirect(300,'menu');
     if ($redirect) {
         &Apache::loncommon::content_type($r,'text/html');
@@ -62,32 +62,71 @@ sub handler {
 # the main menu
     $env{'browser.interface'}='faketextual';
 
-    $r->print(&Apache::loncommon::start_page( 'Main Menu',
-                                               undef,
-                                              {'bread_crumbs' => 1}));
 #
-# If menu collection is in effect in course context, and Main Menu is 
-# not included, display message in place of usual menu items.
+# If menu collection is in effect in course context, determine if Main Menu
+# will be shown.
 #
+    my $showmenu = 1;
+    my $deeplinkmenu;
     if ($env{'request.course.id'}) {
-        my ($menucoll,$deeplinkmenu,$menuref) =
+        (my $menucoll,$deeplinkmenu,my $menuref) =
             &Apache::loncommon::menucoll_in_effect();
-        if ($menucoll) {
-            if (ref($menuref) eq 'HASH') {
-                if ($menuref->{'main'} eq 'n') {
-                    $r->print('<h3>'.&mt('Main Menu unavailable').'</h3>');
-                    unless ($deeplinkmenu) {
-                        my $crstype = &Apache::loncommon::course_type();
-                        $r->print('<p>'.&mt("Main Menu page is unavailable in this $crstype").'</p>');
-                    }
-                    $r->print(&Apache::loncommon::end_page());
-                    return OK;
-                }
+        if (($menucoll) && (ref($menuref) eq 'HASH')) {
+            if ($menuref->{'main'} eq 'n') {
+                $showmenu = 0;
+            }
+        }
+    }
+    my $js;
+    my $args = { 'bread_crumbs' => 1 };
+    if ($showmenu) {
+        $js = <<"END";
+<script type="text/javascript">
+// <![CDATA[
+function formatMenuText() {
+    var textArray = document.getElementsByClassName("LC_menu_text");
+    if (textArray.length > 0) {
+        var singleLineHeight = textArray[0].offsetHeight;
+        for (var i=1; i<textArray.length; i++) {
+            if (textArray[i].offsetHeight > singleLineHeight) {
+                var el = textArray[i].previousElementSibling;
+                el.style.cssFloat = "left";
+                el.style.marginRight = "5px";
             }
         }
     }
-    $r->print(&Apache::lonmenu::inlinemenu());
-    $r->print(&Apache::loncommon::end_page());
+}
+// ]]>
+</script>
+END
+        $args->{'add_entries'} = { 'onload' => 'javascript:formatMenuText();' };
+    }
+
+    $r->print(&Apache::loncommon::start_page( 'Main Menu',$js,$args).
+              '<div class="LC_landmark" role="main">');
+#
+# If menu collection is in effect in course context, and Main Menu is 
+# not included, display message in place of usual menu items.
+#
+    unless ($showmenu) {
+        my $nomenumsg;
+        my $crstype = &Apache::loncommon::course_type();
+        if ($deeplinkmenu) {
+            $nomenumsg = &mt('Page unavailable');
+        } else {
+            $nomenumsg = &mt("Main Menu page is unavailable in this $crstype");
+        }
+        $r->print('<h1 class="LC_heading_3">'.$nomenumsg.'</h1>'.
+                  '</div>'.&Apache::loncommon::end_page());
+        return OK;
+    }
+#
+# A span with class of LC_menu_text needs to be first item with that class.
+# It will be used by formatMenuText() to determine the offsetHeight for a single line.
+#
+    $r->print('<span class="LC_menu_text">&nbsp;</span>'.
+              &Apache::lonmenu::inlinemenu().
+              '</div>'.&Apache::loncommon::end_page());
     return OK;
 }