--- loncom/interface/londocs.pm	2012/08/27 14:33:15	1.494
+++ loncom/interface/londocs.pm	2012/10/31 05:10:16	1.500
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Documents
 #
-# $Id: londocs.pm,v 1.494 2012/08/27 14:33:15 raeburn Exp $
+# $Id: londocs.pm,v 1.500 2012/10/31 05:10:16 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -322,7 +322,6 @@ sub breadcrumbs {
         @folders=split('&',$env{'form.folderpath'});
     }
     my $folderpath;
-    my $cpinfo='';
     my $plain='';
     my $randompick=-1;
     my $isencrypted=0;
@@ -355,7 +354,7 @@ sub breadcrumbs {
             $name = &mt('Supplemental '.$crstype.' Content');
         }
 	&Apache::lonhtmlcommon::add_breadcrumb(
-		      {'href'=>$url.$cpinfo,
+		      {'href'=>$url,
 		       'title'=>$name,
 		       'text'=>$name,
 		       'no_mt'=>1,
@@ -2152,7 +2151,6 @@ sub entryline {
 	$path = &HTML::Entities::encode($env{'form.pagepath'},'<>&"');
         $symb=&escape($env{'form.pagesymb'});
     }
-    my $cpinfo='';
     if ($allowed) {
 	my $incindex=$index+1;
 	my $selectbox='';
@@ -2184,6 +2182,7 @@ sub entryline {
 		'cp' => 'Copy');
 	my $nocopy=0;
         my $nocut=0;
+        my $noremove=0;
         if ($url=~ m{^/res/.+\.(page|sequence)$}) {
 	    # no copy for published maps
 	    $nocopy=1;
@@ -2192,8 +2191,58 @@ sub entryline {
            $nocopy=1;
            $nocut=1;
         }
+        my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+        my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+        if ($url eq "/uploaded/$cdom/$cnum/group_allfolders.sequence") {
+            if ($env{'form.folderpath'} =~ /^default&[^\&]+$/) {
+                my %curr_groups = &Apache::longroup::coursegroups();
+                if (keys(%curr_groups) > 0) {
+                    $noremove=1;
+                }
+                $nocut=1;
+                $nocopy=1;
+            }
+        } elsif ($url =~ m{^\Q/uploaded/$cdom/$cnum/group_folder_\E(\w+)\.sequence$}) {
+            my $group = $1;
+            if ($env{'form.folderpath'} =~ /^default&[^\&]+\&group_allfolders\&[^\&]+$/) {
+                my %curr_group = &Apache::longroup::coursegroups($cdom,$cnum,$group);
+                if (keys(%curr_group) > 0) {
+                    $noremove=1;
+                }
+            }
+            $nocut=1;
+            $nocopy=1;
+        } elsif ($url =~ m{^\Q/adm/$cdom/$cnum/\E(\w+)/smppg$}) {
+            my $group = $1;
+            if ($env{'form.folderpath'} =~ /^default&[^\&]+\&group_allfolders\&[^\&]+\&\Qgroup_folder_$group\E\&[^\&]+$/) {
+                my %curr_group = &Apache::longroup::coursegroups($cdom,$cnum,$group);
+                my %groupsettings = &Apache::longroup::get_group_settings($curr_group{$group});
+                if (keys(%groupsettings) > 0) {
+                    $noremove=1;
+                }
+                $nocut=1;
+                $nocopy=1;
+            }
+        } elsif ($env{'form.folderpath'} =~ /^default&[^\&]+\&group_allfolders\&[^\&]+\&group_folder_(\w+)\&/) {
+            my $group = $1;
+            my %curr_group = &Apache::longroup::coursegroups($cdom,$cnum,$group);
+            if ($url =~ /group_boards_\Q$group\E/) {
+                my %curr_group = &Apache::longroup::coursegroups($cdom,$cnum,$group);
+                my %groupsettings = &Apache::longroup::get_group_settings($curr_group{$group});
+                if (keys(%groupsettings) > 0) {
+                    if (ref($groupsettings{'functions'}) eq 'HASH') {
+                        if ($groupsettings{'functions'}{'discussion'} eq 'on') {
+                            $noremove=1;
+                        }
+                    }
+                }
+                $nocut=1;
+                $nocopy=1;
+            }
+        }
         my $copylink='&nbsp;';
         my $cutlink='&nbsp;';
+        my $removelink='&nbsp;';
 
 	my $skip_confirm = 0;
 	if ( $folder =~ /^supplemental/
@@ -2217,6 +2266,11 @@ ENDCOPY
 <a href="javascript:cutres('$esc_path','$index','$renametitle','$container','$symb','$folder',$skip_confirm);" class="LC_docs_cut">$lt{'ct'}</a>
 ENDCUT
         }
+        if (!$noremove) {
+            $removelink=(<<ENDREM);
+<a href='javascript:removeres("$esc_path","$index","$renametitle","$container","$symb",$skip_confirm);' class="LC_docs_remove">$lt{'rm'}</a>
+ENDREM
+        }
 	$form_start = '
    <form action="/adm/coursedocs" method="post">
 ';
@@ -2230,12 +2284,12 @@ END
 	$line.=(<<END);
 <td>
 <div class="LC_docs_entry_move">
-  <a href='/adm/coursedocs?cmd=up_$index&amp;${type}path=$esc_path&amp;${type}symb=$symb$cpinfo'>
+  <a href='/adm/coursedocs?cmd=up_$index&amp;${type}path=$esc_path&amp;${type}symb=$symb'>
     <img src="${iconpath}move_up.gif" alt='$lt{'up'}' class="LC_icon" />
   </a>
 </div>
 <div class="LC_docs_entry_move">
-  <a href='/adm/coursedocs?cmd=down_$index&amp;${type}path=$esc_path&amp;${type}symb=$symb$cpinfo'>
+  <a href='/adm/coursedocs?cmd=down_$index&amp;${type}path=$esc_path&amp;${type}symb=$symb'>
     <img src="${iconpath}move_down.gif" alt='$lt{'dw'}' class="LC_icon" />
   </a>
 </div>
@@ -2247,7 +2301,7 @@ END
    $form_end
 </td>
 <td class="LC_docs_entry_commands">
-   <a href='javascript:removeres("$esc_path","$index","$renametitle","$container","$symb",$skip_confirm);' class="LC_docs_remove">$lt{'rm'}</a>
+$removelink
 $cutlink
    <a href='javascript:changename("$esc_path","$index","$renametitle","$container","$symb");' class="LC_docs_rename">$lt{'rn'}</a>
 $copylink
@@ -2341,7 +2395,7 @@ END
                                               'parameter_encrypturl'))[0]=~/^yes$/i)
                                                .':'.((&LONCAPA::map::getparameter($orderidx,
                                               'parameter_randomorder'))[0]=~/^yes$/i);
-	$url.='folderpath='.&escape($folderpath).$cpinfo;
+	$url.='folderpath='.&escape($folderpath);
         my $rpicknum = (&LONCAPA::map::getparameter($orderidx,
                                                    'parameter_randompick'))[0];
         my $rpckchk;
@@ -2380,7 +2434,7 @@ $form_common.'
 					       $path.$pagearg.'.page');
 	}
 	$url.='pagepath='.&escape($pagepath).
-	    '&amp;pagesymb='.&escape($symb).$cpinfo;
+	    '&amp;pagesymb='.&escape($symb);
     }
     if (($external) && ($allowed)) {
 	my $form = ($folder =~ /^default/)? 'newext' : 'supnewext';
@@ -2808,7 +2862,8 @@ ENDHEADERS
     '<th colspan="'.$num_ver_col.'">'.&mt('History').'</th>'.
     '</b>');
     foreach my $key (sort(keys(%changes))) {
-	if ($changes{$key}>$starttime) {
+        #excludes not versionable problems from resource version history:
+        if ($changes{$key}>$starttime && $key !~ /^\/res\/lib\/templates/) {
 	    my ($root,$extension)=($key=~/^(.*)\.(\w+)$/);
 	    my $currentversion=&Apache::lonnet::getversion($key);
 	    if ($currentversion<0) {
@@ -3926,7 +3981,7 @@ my %suporderhash = (
   } elsif ($showdoc) {
 # -------------------------------------------------------- This is showdoc mode
       $r->print("<h1>".&mt('Uploaded Document').' - '.
-		&Apache::lonnet::gettitle($r->uri).'</h1><p>'.
+		&Apache::lonnet::gettitle($r->uri).'</h1><p class="LC_warning">'.
 &mt('It is recommended that you use an up-to-date virus scanner before handling this file.')."</p><table>".
                 &entryline(0,&mt("Click to download or use your browser's Save Link function"),$showdoc).'</table>');
   }
@@ -4206,7 +4261,6 @@ sub generate_edit_table {
                $active = 'class="active"';
             }
             $form .= '<li style="float:right" '.$active
-                .' onmouseover="javascript:showPage(this, \''.$name.$tid.'\', \'navigation'.$tid.'\',\'content'.$tid.'\');"'
                 .' onclick="javascript:showPage(this, \''.$name.$tid.'\', \'navigation'.$tid.'\',\'content'.$tid.'\');"><a href="javascript:;"><b>'.&mt(${$orderhash{$name}}[0]).'</b></a></li>'."\n";
         } else {
 	    $form .= '<li '.$active.' style="float:right">'.${$orderhash{$name}}[1].'</li>'."\n";