--- loncom/interface/lonsyllabus.pm	2004/05/03 17:49:11	1.29
+++ loncom/interface/lonsyllabus.pm	2007/03/08 01:58:45	1.58
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Syllabus
 #
-# $Id: lonsyllabus.pm,v 1.29 2004/05/03 17:49:11 sakharuk Exp $
+# $Id: lonsyllabus.pm,v 1.58 2007/03/08 01:58:45 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,6 +36,9 @@ use Apache::lontexconvert;
 use Apache::lonfeedback;
 use Apache::lonannounce;
 use Apache::lonlocal;
+use Apache::lonhtmlcommon;
+use Apache::lonspeller();
+use HTML::Entities();
 
 sub handler {
     my $r = shift;
@@ -43,25 +46,47 @@ sub handler {
     $r->send_http_header;
     return OK if $r->header_only;
 
-# ------------------------------------------------------------ Print the screen
-    my $target=$ENV{'form.grade_target'};
-    &Apache::lonnet::logthis("NOW TARGET IS DEFINIED AS $target");
-    if ($target ne 'tex') {
-	$r->print(<<ENDDOCUMENT);
-<html>
-<head>
-<title>The LearningOnline Network with CAPA</title>
-ENDDOCUMENT
-    } else {
-	$r->print(&Apache::lonprintout::print_latex_header($ENV{'form.latex_type'}));
-    } 
+    my $target=$env{'form.grade_target'};
+# --------------------------------------------------- Get course info from URL
     my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
-# Is this even a course?
-    my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom); 
+# ------------------------------------------------------------ Get query string
+    &Apache::loncommon::get_unprocessed_cgi
+                        ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit','wrapperdisplay']);
+# ----------------------------------------------------- Is this even a course?
+    my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
     if ($homeserver eq 'no_host') {
-	$r->print('</head><body>'.&mt('No syllabus available').'</body></html>');
+        &Apache::loncommon::content_type($r,'text/html');
+        $r->send_http_header;
+      	&Apache::loncommon::simple_error_page($r,'No syllabus available',
+					      'No syllabus available');
         return OK;
     }
+# ------------------------------------- There is such a course, get environment
+    my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
+
+# ------------------------------------------------------------ Print the screen
+
+    my $rss_link =
+	&Apache::lonrss::rss_link('http://'.$ENV{'HTTP_HOST'}.'/public/'.$cdom.'/'.$cnum.'/Course_Announcements.rss');
+
+    if ($target eq 'tex') {
+	$r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
+    } 
+# -------------------------------------------------- Let's see who handles this
+    my $externalsyllabus=$courseenv{'externalsyllabus'};
+
+    if ($externalsyllabus=~/\w/) {
+	
+       if ($env{'form.wrapperdisplay'} eq 'menu') {
+	   $r->print(&Apache::lonwrapper::simple_menu());
+       } else {	    
+	   $r->print(&Apache::lonwrapper::wrapper("/public/$cdom/$cnum/syllabus?wrapperdisplay=menu",
+						   $externalsyllabus));
+       }
+       return OK;
+     } 
+
+# ------------------------------ The buck stops here: internal syllabus display
 # --------------------------------------------------------- The syllabus fields
     my %syllabusfields=&Apache::lonlocal::texthash(
        'aaa_instructorinfo' => 'Instructor Information',
@@ -79,51 +104,50 @@ ENDDOCUMENT
        'jjj_weblinks'       => 'Web Links',
        'kkk_textbook'       => 'Textbook',
        'lll_includeurl'     => 'URLs To Include in Syllabus');
-
-# ------------------------------------------------------------ Get query string
-    &Apache::loncommon::get_unprocessed_cgi
-                        ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit']);
-# ----------------------------------------------------- Force menu registration
-    my $addentries='';
-    if ($ENV{'form.register'}) {
-       $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
-	   '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
-       $r->print(&Apache::lonmenu::registerurl(1));
-    }
 # --------------------------------------------------------------- Force Student
     my $forcestudent='';
-    if ($ENV{'form.forcestudent'}) { $forcestudent='student'; };
+    if ($env{'form.forcestudent'}) { $forcestudent='student'; };
     my $forceedit='';
-    if ($ENV{'form.forceedit'}) { $forceedit='edit'; }
+    if ($env{'form.forceedit'}) { $forceedit='edit'; }
        
-# ------------------------------------- There is such a course, get environment
-    my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
+# ----------------------------------------------------------------- Make header 
     if ($target ne 'tex') {
-	$r->print('</head>'.&Apache::loncommon::bodytag
-            ("Syllabus",$forcestudent,$addentries,'',$cdom,$ENV{'form.register'}));
-	$r->print('<h1>'.$courseenv{'description'}.'</h1><h3>'.
-                 $Apache::lonnet::domaindescription{$cdom}.'</h3>');
+	my $start_page = 
+	    &Apache::loncommon::start_page("Syllabus", $rss_link,
+					   {'function'       => $forcestudent,
+					    'domain'         => $cdom,
+					    'force_register' =>
+						$env{'form.register'},});
+
+	$r->print($start_page.'<h1>'.$courseenv{'description'}.'</h1><h3>'.
+		  &Apache::lonnet::domain($cdom,'description').'</h3>');
     } else {
 	$r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
-                 $Apache::lonnet::domaindescription{$cdom}.'}\\\\');
+		  &Apache::lonnet::domain($cdom,'description').'}\\\\');
     }
 # -------------------------------------------------------------- Announcements?
-    $r->print(&Apache::lonannounce::showday(time,2,
-                         &Apache::lonannounce::readcalendar($cdom.'_'.$cnum)));
+    my $day = &Apache::lonannounce::showday(time,2,
+			 &Apache::lonannounce::readcalendar($cdom.'_'.$cnum));
+    if ($target ne 'tex') {
+	$r->print($day. &Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit));
+    } else {
+	$r->print(&Apache::lonxml::xmlparse($r,'tex',$day));
+    }
+
 # -------------------------------------------------------- Get course personnel
     my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
     if ($target ne 'tex') {
 	$r->print('<table border="2">');
     } else {
-	$r->print('\begin{tabular}{|c|c|}\hline');
+	$r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
     }
-    foreach (sort keys %coursepersonnel) {
+    foreach my $element (sort keys %coursepersonnel) {
 	if ($target ne 'tex') {
-	    $r->print('<tr><td>'.$_.'</td><td>');
+	    $r->print('<tr><td>'.$element.'</td><td>');
 	} else {
-	    $r->print(' '.$_.'\\\\  '); 
+	    $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & '); 
 	}
-        foreach (split(/\,/,$coursepersonnel{$_})) {
+        foreach (split(/\,/,$coursepersonnel{$element})) {
 	    my ($puname,$pudom)=split(/\:/,$_);
 	    if ($target ne 'tex') {
 		$r->print(' '.&Apache::loncommon::aboutmewrapper(
@@ -152,22 +176,25 @@ ENDDOCUMENT
 
 # This handler might be called anonymously ...
 # ----------------------------------------------------- Only if not public call
-    if ($ENV{'user.environment'}) {
+    if ($env{'user.environment'}) {
 # does this user have privileges to post, etc?
-       if ($ENV{'request.course.id'}) {
-          $allowed=&Apache::lonnet::allowed('mdc',$ENV{'request.course.id'});
+       if ($env{'request.course.id'}
+	   && $cdom eq $env{'course.'.$env{'request.course.id'}.'.domain'}
+	   && $cnum eq $env{'course.'.$env{'request.course.id'}.'.num'}) {
+          $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
 	  $privileged=$allowed;
 	  if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
 	      $forcestudent='student';
 	  }
-          if ($forcestudent) { $allowed=0; }
+          if ($forcestudent or $target eq 'tex') { $allowed=0; }
        }
        if ($allowed) {
           $r->print('<p>'.
 &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'</p><p>'.&mt('This syllabus can be publicly viewed at')
 		    .' <tt>http://'.
-		    $Apache::lonnet::hostname{$homeserver}.$r->uri.'</tt>'.
+		    &Apache::lonnet::hostname($homeserver).$r->uri.'</tt>'.
                &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
+          '<p>'.&mt('You can specify an external URL as Syllabus in the [_1].','<a href="/adm/parmset?action=crsenv">'.&mt('Course Parameters').'</a>').'</p>'.
 	  '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.
 &mt('Show Public View').'</font></a>'.
           &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').
@@ -178,24 +205,30 @@ ENDDOCUMENT
 			&mt('Edit').'</font></a>'); 
 	  }
       }
-       if (($allowed) && ($ENV{'form.storesyl'})) {
-	   foreach (keys %syllabusfields) {
-               my $field=$ENV{'form.'.$_};
+       if (($allowed) && ($env{'form.storesyl'})) {
+	   foreach my $syl_field (keys(%syllabusfields)) {
+               my $field=$env{'form.'.$syl_field};
+	       chomp($field);
                $field=~s/\s+$//s;
-               $field=&Apache::lonfeedback::clear_out_html($field,1);
-	       $syllabus{$_}=$field;
-               if ($_ eq 'lll_includeurl') { # clean up included URLs
+	       $field=~s/^\s+//s;
+	       $field=~s/\<br\s*\/*\>$//s;
+	       $field=&Apache::lonfeedback::clear_out_html($field,1);
+	       $syllabus{$syl_field}=$field;
+               if ($syl_field eq 'lll_includeurl') { # clean up included URLs
                   my $field='';
-	          foreach (split(/\n/,$syllabus{$_})) {
-		      my $url=$_;
+	          foreach my $value (split(/\n/,$syllabus{$syl_field})) {
+		      my $url=$value;
 # get rid of leading and trailing spaces
                       $url=~s/^\s+//;
                       $url=~s/\s+$//;
-                      if ($url=~/^http\:\/\/([^\/]+)\/(.+)$/) {
+                      if ($url=~m|^http://([^/]+)/(.+)$|) {
+			  my $host = $1;
                           my $remainder=$2;
 # remove the hostname from internal URLs
-		          foreach (keys %Apache::lonnet::hostname) {
-                              if ($1=~/$Apache::lonnet::hostname{$_}/i) {
+			  my $hostname = &Apache::lonnet::hostname($host);
+			  my %all_hostnames = &Apache::lonnet::all_hostnames();
+		          foreach my $possible_host (keys(%all_hostnames)) {
+                              if ($possible_host =~ /\Q$hostname\E/i) {
 			         $url=$remainder;
 			      }
 		          }
@@ -209,11 +242,11 @@ ENDDOCUMENT
 		          $field.=$url."\n";
                       }
 		  }
-                  $syllabus{$_}=$field;
+                  $syllabus{$syl_field}=$field;
 	      }
            }
-           $syllabus{'uploaded.domain'}=$ENV{'user.domain'};
-           $syllabus{'uploaded.name'}=$ENV{'user.name'};
+           $syllabus{'uploaded.domain'}=$env{'user.domain'};
+           $syllabus{'uploaded.name'}=$env{'user.name'};
            $syllabus{'uploaded.lastmodified'}=time;
            &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
        }
@@ -239,62 +272,77 @@ ENDDOCUMENT
 	   $r->print('<form method="post">'.
 		     '<input type="hidden" name="forceedit" value="edit" />');
        }
-       foreach (sort keys %syllabusfields) {
-          if (($syllabus{$_}) || ($allowed)) {
-              my $message=$syllabus{$_};
-              if ($_ eq 'lll_includeurl') { # this is the "included" field
-		  my $urls=$message;
-                  $message='';
-                  foreach my $filelink (split(/\n/,$urls)) {
-		      my $output='';
+       my @htmlids=();
+       foreach my $field (sort(keys(%syllabusfields))) {
+	   if (($syllabus{$field}=~/\w/) || ($allowed)) {
+	       my $message=$syllabus{$field};
+	       if ($field eq 'lll_includeurl') { # this is the "included" field
+		   my $urls=$message;
+		   $message='';
+		   foreach my $filelink (split(/\n/,$urls)) {
+		       my $output='';
 # embed style?
-		      my ($curfext)=($filelink=~/\.([^\.]+)$/);
-                      my $embstyle=&Apache::loncommon::fileembstyle($curfext);
-	              if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
+		       my ($curfext)=($filelink=~/\.([^\.]+)$/);
+		       my $embstyle=&Apache::loncommon::fileembstyle($curfext);
+		       if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
 # make ssi call and remove everything but the body contents
-			  $output=&Apache::lonnet::ssi_body($filelink);
-	              } elsif ($embstyle eq 'img') {
+			   $output=&Apache::lonnet::ssi_body($filelink);
+		       } elsif ($embstyle eq 'img') {
 # embed as an image
-                         $output='<img src="'.$filelink.'" />';
-		      }
-                      $message.='<p>'.$output.'</p>';
-                  }
-                  if ($allowed) {
-                     $r->print('<h3>'.$syllabusfields{$_}.
-          &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
-	  '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Public View').'</font></a>'.
- &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
-		 } else {
-                  $r->print($message);
-                 } 
-              } else {
-                 $message=~s/\n/\<br \/\>/g;
-                 $message
-           =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
-	         $message=&Apache::lontexconvert::msgtexconverted($message);
-		 if ($target ne 'tex') {
-		     $r->print('<h3>'.$syllabusfields{$_}.'</h3><blockquote>'.
-                               $message.'</blockquote>');
-		 } else {
-		     $r->print('\\\\\textbf{'.$syllabusfields{$_}.'}\\\\'.
-			       &Apache::lonxml::xmlparse($r,' ',$message).'\\\\');
-		 }
-	     }
-              if ($allowed) {
-                 $r->print('<br /><textarea cols="80" rows="6" name="'.$_.'">'.
-			   $syllabus{$_}.
-           '</textarea><input type="submit" name="storesyl" value="Store" />');
-	      }
-	  }
+			   $output='<img src="'.$filelink.'" />';
+		       }
+		       if ($target ne 'tex') {
+			   $message.='<p>'.$output.'</p>';
+		       } else {
+			   $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
+		       }      
+		   }
+		   if ($allowed) {
+		       $r->print('<h3>'.$syllabusfields{$field}.
+				 &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
+				 '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Public View').'</font></a>'.
+				 &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
+		   } else {
+		       $r->print($message);
+		   } 
+	       } else {
+		   &Apache::lonfeedback::newline_to_br(\$message);
+		   $message =~s|(https*://[^\s]+)|<a href="$1"><tt>$1</tt></a>|g;
+		   if ($allowed) {
+		       $message=&Apache::lonspeller::markeduptext($message);
+		   }
+		   $message=&Apache::lontexconvert::msgtexconverted($message);
+		   if ($target ne 'tex') {
+		       $r->print('<h3>'.$syllabusfields{$field}.'</h3><blockquote>'.
+				 $message.'</blockquote>');
+		   } else {
+		       $r->print('\\\\\textbf{'.$syllabusfields{$field}.'}\\\\'.
+				 &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
+		   }
+		   push(@htmlids,$field);
+	       }
+	       if ($allowed) {
+		   $r->print('<br /><textarea cols="80" rows="12" name="'.$field.'" id="'.$field.'">'.
+			     &HTML::Entities::encode($syllabus{$field},'"&<>').
+			     '</textarea> <input type="submit" name="storesyl" value="Store" />');
+	       }
+	   }
        }
        if ($allowed) {
-	   $r->print('</form>');
+	   $r->print('</form>'.
+		     &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
        }
        if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
     } else {
-       $r->print('<p>No syllabus information provided.</p>');
+	if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');} 
+	$r->print('No syllabus information provided.');
+	if ($target ne 'tex') {$r->print('</p>');}
+    }
+    if ($target ne 'tex') {
+	$r->print(&Apache::loncommon::end_page());
+    } else {
+	$r->print('\end{document}');
     }
-    if ($target ne 'tex') {$r->print('</body></html>');} else {$r->print('\end{document}');}
     return OK;
 }