--- loncom/interface/lonsyllabus.pm	2004/05/03 17:49:11	1.29
+++ loncom/interface/lonsyllabus.pm	2006/03/07 21:36:20	1.47
@@ -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 1.47 2006/03/07 21:36:20 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,6 +36,8 @@ use Apache::lontexconvert;
 use Apache::lonfeedback;
 use Apache::lonannounce;
 use Apache::lonlocal;
+use Apache::lonhtmlcommon;
+use Apache::lonspeller();
 
 sub handler {
     my $r = shift;
@@ -43,25 +45,89 @@ sub handler {
     $r->send_http_header;
     return OK if $r->header_only;
 
+    my $target=$env{'form.grade_target'};
+# --------------------------------------------------- Get course info from URL
+    my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
+# ------------------------------------------------------------ Get query string
+    &Apache::loncommon::get_unprocessed_cgi
+                        ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit','wrapperdisplay']);
+# ----------------------------------------------------- Is this even a course?
+    my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
+    if ($homeserver eq 'no_host') {
+        &Apache::loncommon::content_type($r,'text/html');
+        $r->send_http_header;
+        $r->print('<html><body>'.&mt('No syllabus available').'</body></html>');
+        return OK;
+    }
+# ------------------------------------- There is such a course, get environment
+    my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
+
 # ------------------------------------------------------------ Print the screen
-    my $target=$ENV{'form.grade_target'};
-    &Apache::lonnet::logthis("NOW TARGET IS DEFINIED AS $target");
+    my $feedurl='http://'.$ENV{'HTTP_HOST'}.'/public/'.$cdom.'/'.$cnum.'/Course_Announcements.rss';
     if ($target ne 'tex') {
+	my $html=&Apache::lonxml::xmlbegin();
 	$r->print(<<ENDDOCUMENT);
-<html>
+$html
 <head>
 <title>The LearningOnline Network with CAPA</title>
+<link rel="alternate" type="application/rss+xml" title="Course Announcements" href="$feedurl" />
 ENDDOCUMENT
     } else {
-	$r->print(&Apache::lonprintout::print_latex_header($ENV{'form.latex_type'}));
+	$r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
     } 
-    my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
-# 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>');
-        return OK;
+# ----------------------------------------------------- Force menu registration
+    my $addentries='';
+    if ($env{'form.register'}) {
+       $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
+           '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
+       $r->print(&Apache::lonmenu::registerurl(1));
     }
+# -------------------------------------------------- Let's see who handles this
+    my $externalsyllabus=$courseenv{'externalsyllabus'};
+    if ($externalsyllabus=~/\w/) {
+       $r->print('</head>');
+       if ($env{'form.wrapperdisplay'} eq 'menu') {
+#
+# Producing the menu buttons
+#
+           $r->print('<body bgcolor="#FFFFFF">'.
+                &Apache::lonmenu::menubuttons(1,'web',1).'</body></html>');
+        } else {
+           if ($env{'browser.interface'} eq 'textual') {
+#
+# ssi-based rendering for text-based interface
+#
+               $r->print('<body bgcolor="#FFFFFF">'.
+                        &Apache::lonmenu::menubuttons(1).
+                        &Apache::lonnet::ssi_body($externalsyllabus).'</body></html>');
+           } elsif ($env{'environment.remote'} eq 'off') {
+#
+# This is inline remote
+# 
+               $r->print(<<ENDDOCUMENTINL);
+<frameset rows="180,*" border=0 $addentries>
+<frame src="/public/$cdom/$cnum/syllabus?wrapperdisplay=menu">
+<frame src="$externalsyllabus">
+</frameset>
+</html>
+ENDDOCUMENTINL
+          } else {
+#
+# frame-based rendering for graphical interface
+#
+               $r->print(<<ENDDOCUMENT);
+<frameset rows="1,*" border=0 $addentries>
+<frame src="/adm/rat/empty.html">
+<frame src="$externalsyllabus">
+</frameset>
+</html>
+ENDDOCUMENT
+           }
+        }
+        return OK;
+     } 
+
+# ------------------------------ The buck stops here: internal syllabus display
 # --------------------------------------------------------- The syllabus fields
     my %syllabusfields=&Apache::lonlocal::texthash(
        'aaa_instructorinfo' => 'Instructor Information',
@@ -79,28 +145,17 @@ 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'}));
+	$r->print(&Apache::lonhtmlcommon::htmlareaheaders().
+		  '</head>'.&Apache::loncommon::bodytag
+            ("Syllabus",$forcestudent,$addentries,'',$cdom,$env{'form.register'}));
 	$r->print('<h1>'.$courseenv{'description'}.'</h1><h3>'.
                  $Apache::lonnet::domaindescription{$cdom}.'</h3>');
     } else {
@@ -108,22 +163,29 @@ ENDDOCUMENT
                  $Apache::lonnet::domaindescription{$cdom}.'}\\\\');
     }
 # -------------------------------------------------------------- Announcements?
-    $r->print(&Apache::lonannounce::showday(time,2,
-                         &Apache::lonannounce::readcalendar($cdom.'_'.$cnum)));
+    if ($target ne 'tex') {
+	$r->print(&Apache::lonannounce::showday(time,2,
+		       &Apache::lonannounce::readcalendar($cdom.'_'.$cnum)).
+                       &Apache::lonrss::advertisefeeds($cnum,$cdom));
+    } else {
+	$r->print(&Apache::lonxml::xmlparse($r,'tex',
+		       &Apache::lonannounce::showday(time,2,
+                       &Apache::lonannounce::readcalendar($cdom.'_'.$cnum))));
+    }
 # -------------------------------------------------------- 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(
@@ -152,15 +214,15 @@ 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'}) {
+          $allowed=&Apache::lonnet::allowed('mdc',$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>'.
@@ -168,6 +230,7 @@ ENDDOCUMENT
 		    .' <tt>http://'.
 		    $Apache::lonnet::hostname{$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').
@@ -178,11 +241,14 @@ ENDDOCUMENT
 			&mt('Edit').'</font></a>'); 
 	  }
       }
-       if (($allowed) && ($ENV{'form.storesyl'})) {
+       if (($allowed) && ($env{'form.storesyl'})) {
 	   foreach (keys %syllabusfields) {
-               my $field=$ENV{'form.'.$_};
+               my $field=$env{'form.'.$_};
+	       chomp($field);
                $field=~s/\s+$//s;
-               $field=&Apache::lonfeedback::clear_out_html($field,1);
+	       $field=~s/^\s+//s;
+	       $field=~s/\<br\s*\/*\>$//s;
+	       $field=&Apache::lonfeedback::clear_out_html($field,1);
 	       $syllabus{$_}=$field;
                if ($_ eq 'lll_includeurl') { # clean up included URLs
                   my $field='';
@@ -212,8 +278,8 @@ ENDDOCUMENT
                   $syllabus{$_}=$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);
        }
@@ -239,8 +305,9 @@ ENDDOCUMENT
 	   $r->print('<form method="post">'.
 		     '<input type="hidden" name="forceedit" value="edit" />');
        }
+       my @htmlids=();
        foreach (sort keys %syllabusfields) {
-          if (($syllabus{$_}) || ($allowed)) {
+          if (($syllabus{$_}=~/\w/) || ($allowed)) {
               my $message=$syllabus{$_};
               if ($_ eq 'lll_includeurl') { # this is the "included" field
 		  my $urls=$message;
@@ -257,7 +324,11 @@ ENDDOCUMENT
 # embed as an image
                          $output='<img src="'.$filelink.'" />';
 		      }
-                      $message.='<p>'.$output.'</p>';
+		      if ($target ne 'tex') {
+			  $message.='<p>'.$output.'</p>';
+		      } else {
+			  $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
+		      }		      
                   }
                   if ($allowed) {
                      $r->print('<h3>'.$syllabusfields{$_}.
@@ -268,31 +339,39 @@ ENDDOCUMENT
                   $r->print($message);
                  } 
               } else {
-                 $message=~s/\n/\<br \/\>/g;
+		  &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{$_}.'</h3><blockquote>'.
                                $message.'</blockquote>');
 		 } else {
 		     $r->print('\\\\\textbf{'.$syllabusfields{$_}.'}\\\\'.
-			       &Apache::lonxml::xmlparse($r,' ',$message).'\\\\');
+			       &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
 		 }
+		 push @htmlids,$_;
 	     }
               if ($allowed) {
-                 $r->print('<br /><textarea cols="80" rows="6" name="'.$_.'">'.
+                 $r->print(
+	   '<br /><textarea cols="80" rows="12" name="'.$_.'" id="'.$_.'">'.
 			   $syllabus{$_}.
-           '</textarea><input type="submit" name="storesyl" value="Store" />');
+           '</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') {$r->print('</body></html>');} else {$r->print('\end{document}');}
     return OK;