--- loncom/interface/lonmenu.pm	2012/05/22 11:18:26	1.373
+++ loncom/interface/lonmenu.pm	2012/05/29 19:40:44	1.381
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Routines to control the menu
 #
-# $Id: lonmenu.pm,v 1.373 2012/05/22 11:18:26 bisitz Exp $
+# $Id: lonmenu.pm,v 1.381 2012/05/29 19:40:44 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -115,6 +115,18 @@ entries from mydesk.tab
 
 Same as primary_menu() but operates on @secondary_menu.
 
+=item create_submenu()
+
+Creates XHTML for unordered list of sub-menu items which belong to a 
+particular top-level menu item. Uses hover pseudo class in css to display
+dropdown list when mouse hovers over top-level item. Support for IE6 
+(no hover psuedo class) via LC_hoverable class for <li> tag for top-
+level item, which employs jQuery to handle behavior on mouseover.
+
+Inputs: 4 - (a) link and (b) target for anchor href in top level item,
+            (c) title for text wrapped by anchor tag in top level item.
+            (d) reference to array of arrays of sub-menu items.
+
 =item innerregister()
 
 This gets called in order to register a URL in the body of the document
@@ -225,51 +237,32 @@ sub primary_menu {
         
         my $title = $menuitem->[3];
         if (defined($primary_submenu{$title})) {
-            my ($link,$target,$numsub);
+            my ($link,$target);
             if ($menuitem->[0] ne '') {
                 $link = $menuitem->[0];
                 $target = '_top';
             } else {
                 $link = '#';
             }
+            my @primsub;
             if (ref($primary_submenu{$title}) eq 'ARRAY') {
-                $numsub = @{$primary_submenu{$title}};
-                if ($numsub) {
-                    $title =
-                        '<span class="LC_nobreak">'.&mt($title).
-                        '<span class="LC_fontsize_small">'.
-                        '&#9660;</span></span>';
-                }
-            }
-            $menu .= '<li class="LC_hoverable">'.
-                     '<a href="'.$link.'" target="'.$target.'">'.$title.'</a>';
-            if ($numsub) {
-                $menu .= '<ul>';
-                foreach my $item (@{$primary_submenu{$menuitem->[3]}}) {
-                    if (ref($item) eq 'ARRAY') {
-                        if ($item->[2] eq 'wishlist') {
-                            next unless ((&Apache::lonnet::allowed('bre',"/res/$env{'user.domain'}/")) ||
-                                         (&Apache::lonnet::allowed('bro',"/res/$env{'user.domain'}/")));
-                        } elsif ($item->[2] eq 'reqcrs') {
-                            next unless(&check_for_rcrs());
-                        } elsif (($item->[2] eq 'portfolio') ||
-                                 ($item->[2] eq 'blog')) {
-                            if (!&Apache::lonnet::usertools_access(
-                                    $env{'user.name'},
-                                    $env{'user.domain'},
-                                    $item->[2],undef,'tools')) {
-                                next;
-                            }
-                        }
-                        $menu .= '<li style="margin:0;padding:0">'.
-                                 '<a href="'.$item->[0].
-                                 '" style="padding:0 0 0 10px">'.
-                                 &mt($item->[1]).'</a></li>';
-                    }
+                foreach my $item (@{$primary_submenu{$title}}) {
+                    next if (($item->[2] eq 'wishlist') &&
+                             ((!&Apache::lonnet::allowed('bre',"/res/$env{'user.domain'}/")) &&
+                              (!&Apache::lonnet::allowed('bro',"/res/$env{'user.domain'}/"))));
+                    next if (($item->[2] eq 'reqcrs') && (!&check_for_rcrs()));
+                    next if ((($item->[2] eq 'portfolio') ||
+                             ($item->[2] eq 'blog')) &&
+                             (!&Apache::lonnet::usertools_access('','',$item->[2],
+                                                           undef,'tools')));
+                    push(@primsub,$item);
+                }
+                if (@primsub > 0) {
+                    $menu .= &create_submenu($link,$target,$title,\@primsub);
+                } elsif ($link) {
+                    $menu .= '<li><a href="'.$link.'" target="'.$target.'">'.&mt($title).'</a></li>';
                 }
-                $menu .= '</ul>';
             }
-            $menu .= '</li>';
         } elsif ($$menuitem[3] eq 'Help') { # special treatment for helplink
             if ($public) {
                 my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
@@ -326,6 +319,7 @@ sub secondary_menu {
                                                ? "/$env{'request.course.sec'}"
                                                : '');
     my $canedit       = &Apache::lonnet::allowed('mdc', $env{'request.course.id'});
+    my $canviewroster = $env{'course.'.$env{'request.course.id'}.'.student_classlist_view'};
     my $canviewgrps   = &Apache::lonnet::allowed('vcg', $crs_sec); 
     my $canmodifyuser = &Apache::lonnet::allowed('cst', $crs_sec); 
     my $canviewwnew   = &Apache::lonnet::allowed('whn', $crs_sec); 
@@ -354,7 +348,7 @@ sub secondary_menu {
         next if    $$menuitem[4]   eq 'cst'
                 && !$canmodifyuser;
         next if    $$menuitem[4]   eq 'ncst'
-                && $canmodifyuser;
+                && ($canmodifyuser || !$canviewroster);
         next if    $$menuitem[4]   eq 'mgr'
                 && !$canmgr;
         next if    $$menuitem[4]   eq 'nmgr'
@@ -405,6 +399,37 @@ sub secondary_menu {
     return "<ul id=\"LC_secondary_menu\">$menu</ul>";
 }
 
+sub create_submenu {
+    my ($link,$target,$title,$submenu) = @_;
+    return unless (ref($submenu) eq 'ARRAY');
+    my $disptarget;
+    if ($target ne '') {
+        $disptarget = ' target="'.$target.'"';
+    }
+    my $menu = '<li class="LC_hoverable">'.
+               '<a href="'.$link.'"'.$disptarget.'>'.
+               '<span class="LC_nobreak">'.&mt($title).
+               '<span class="LC_fontsize_small" style="font-weight:normal;">'.
+               ' &#9660;</span></span></a>'.
+               '<ul>';
+    my $count = 0;
+    my $numsub = scalar(@{$submenu});
+    foreach my $item (@{$submenu}) {
+        $count ++;
+        if (ref($item) eq 'ARRAY') {
+            my $borderbot;
+            if ($count == $numsub) {
+                $borderbot = 'border-bottom:1px solid black;';
+            }
+            $menu .= '<li style="margin:0;padding:0;'.
+                     $borderbot.'"><a href="'.$item->[0].'">'.
+                     &mt($item->[1]).'</a></li>';
+        }
+    }
+    $menu .= '</ul></li>';
+    return $menu;
+}
+
 sub innerregister {
     my ($forcereg,$bread_crumbs) = @_;
     my $const_space = ($env{'request.state'} eq 'construct');
@@ -725,7 +750,7 @@ ENDMENUITEMS
             if (&Apache::lonnet::allowed('bre', $env{'request.course.id'}) eq 'F') {
                 # wishlist is only available for users with access to resource-pool
                 $menuitems .= (<<ENDMENUITEMS);
-s&9&1&wishlist-link.png&Stored Links&wishlistlink[_2]&set_wishlistlink()&Save a link for this resource in in your personal Stored Links repository&&1
+s&9&1&wishlist-link.png&Stored Links&wishlistlink[_2]&set_wishlistlink()&Save a link for this resource in your personal Stored Links repository&&1
 ENDMENUITEMS
             }
 	}
@@ -757,9 +782,18 @@ ENDMENUITEMS
             &Apache::lonhtmlcommon::add_breadcrumb_tool(
                 'navigation', @inlineremote[21,23]);
 
-        if(hidden_button_check() ne 'yes') {
+        my $countdown = &countdown_timer();
+        if (&hidden_button_check() eq 'yes') {
+            if ($countdown) {
+                &Apache::lonhtmlcommon::add_breadcrumb_tool('tools',$countdown);
+            }
+        } else {
+            my @tools = @inlineremote[93,91,81,82,83];
+            if ($countdown) {
+                unshift(@tools,$countdown);
+            }
             &Apache::lonhtmlcommon::add_breadcrumb_tool(
-                'tools', @inlineremote[93,91,81,82,83]);
+                'tools',@tools);
 
             #publish button in construction space
             if ($env{'request.state'} eq 'construct'){
@@ -870,9 +904,19 @@ sub switch {
 	   }
     } else {
 # Inline Menu
-      $inlineremote[$idx]=
+        my @tools = (93,91,81,82,83);
+        unless ($env{'request.state'} eq 'construct') {
+            push(@tools,63);
+        }
+        if (($env{'environment.icons'} eq 'iconsonly') && 
+            (grep(/^$idx$/,@tools))) {
+            $inlineremote[$idx] =
+        '<a title="'.$desc.'" class="LC_menubuttons_link" href="javascript:'.$act.';">'.$pic.'</a>';
+        } else {
+            $inlineremote[$idx] =
        '<a title="'.$desc.'" class="LC_menubuttons_link" href="javascript:'.$act.';">'.$pic.
        '<span class="LC_menubuttons_inline_text">'.$top.'&nbsp;</span></a>';
+        }
     }
     return '';
 }
@@ -1158,6 +1202,27 @@ END
 
 }
 
+sub countdown_toggle_js {
+    return <<"END";
+
+function toggleCountdown() {
+    var countdownid = document.getElementById('duedatecountdown');
+    var currstyle = countdownid.style.display;
+    if (currstyle == 'inline') {
+        countdownid.style.display = 'none';
+        document.getElementById('ddcountcollapse').innerHTML='';
+        document.getElementById('ddcountexpand').innerHTML='&#9668;&nbsp;';
+    } else {
+        countdownid.style.display = 'inline';
+        document.getElementById('ddcountcollapse').innerHTML='&#9658;&nbsp;';
+        document.getElementById('ddcountexpand').innerHTML='';
+    }
+    return;
+}
+
+END
+}
+
 sub utilityfunctions {
     my $currenturl=&Apache::lonnet::clutter(&Apache::lonnet::fixversion((split(/\?/,$env{'request.noversionuri'}))[0]));
     if ($currenturl =~ m{^/adm/wrapper/ext/}
@@ -1192,6 +1257,8 @@ sub utilityfunctions {
     my $esc_url=&escape($currenturl);
     my $esc_symb=&escape($currentsymb);
 
+    my $countdown = &countdown_toggle_js();
+
 return (<<ENDUTILITY)
 
     var currentURL=unescape("$esc_url");
@@ -1342,6 +1409,8 @@ function open_StoredLinks_Import(rat) {
   });
 }(jQuery));
 
+$countdown
+
 ENDUTILITY
 }
 
@@ -1740,6 +1809,52 @@ sub required_privs {
     return $privs;
 }
 
+sub countdown_timer {
+    if (($env{'request.course.id'}) && ($env{'request.symb'} ne '') &&
+        ($env{'request.filename'}=~/$LONCAPA::assess_re/) &&
+        ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
+        my $duedate = &Apache::lonnet::EXT("resource.0.duedate");
+        my @interval=&Apache::lonnet::EXT("resource.0.interval");
+        my $hastimeleft;
+        if (@interval > 1) {
+            my $first_access=&Apache::lonnet::get_first_access($interval[1]);
+            if ($first_access > 0) {
+                if ($first_access+$interval[0] > time) {
+                    $hastimeleft = 1;
+                }
+            }
+        }
+        if (($duedate && $duedate > time) ||
+            (!$duedate && $hastimeleft)) {
+            my ($collapse,$expand,$alttxt,$title,$currdisp);
+            if (@interval > 1 && $hastimeleft) {
+                $currdisp = 'inline';
+                $collapse = '&#9658;&nbsp;';
+            } else {
+                $currdisp = 'none';
+                $expand = '&#9668;&nbsp;';
+            }
+            unless ($env{'environment.icons'} eq 'iconsonly') {
+                $alttxt = &mt('Timer');
+                $title = $alttxt.'&nbsp;';
+            }
+            my $desc = &mt('Countdown to due date/time');
+            return <<END;
+
+<a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
+<span id="ddcountcollapse" class="LC_menubuttons_inline_text">
+$collapse
+</span></a>
+<span id="duedatecountdown" class="LC_menubuttons_inline_text" style="display: $currdisp;"></span>
+<a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
+<span id="ddcountexpand" class="LC_menubuttons_inline_text" >$expand</span>
+<img src="/res/adm/pages/timer.png" title="$desc" class="LC_icon" alt="$alttxt" /><span class="LC_menubuttons_inline_text">$title</span></a>
+END
+        }
+    }
+    return;
+}
+
 # ================================================================ Main Program
 
 BEGIN {