Annotation of loncom/interface/lonsyllabus.pm, revision 1.16

1.1       www         1: # The LearningOnline Network
                      2: # Syllabus
                      3: #
1.16    ! www         4: # $Id: lonsyllabus.pm,v 1.15 2003/03/03 13:03:58 www Exp $
1.1       www         5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
                     28: 
                     29: package Apache::lonsyllabus;
                     30: 
                     31: use strict;
                     32: use Apache::Constants qw(:common);
                     33: use Apache::loncommon;
                     34: use Apache::lonnet;
1.5       www        35: use Apache::lontexconvert;
1.11      www        36: use Apache::lonfeedback;
1.1       www        37: 
                     38: sub handler {
                     39:     my $r = shift;
                     40:     $r->content_type('text/html');
                     41:     $r->send_http_header;
                     42:     return OK if $r->header_only;
                     43: 
                     44: # ------------------------------------------------------------ Print the screen
                     45:     $r->print(<<ENDDOCUMENT);
                     46: <html>
                     47: <head>
                     48: <title>The LearningOnline Network with CAPA</title>
                     49: ENDDOCUMENT
1.2       www        50:     my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
1.3       www        51: # Is this even a course?
1.7       www        52:     my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom); 
                     53:     if ($homeserver eq 'no_host') {
1.15      www        54: 	$r->print('</head><body>No syllabus available</body></html>');
1.3       www        55:         return OK;
                     56:     }
1.5       www        57: # --------------------------------------------------------- The syllabus fields
                     58:     my %syllabusfields=(
                     59:        'aaa_instructorinfo' => 'Instructor Information',
                     60:        'bbb_description'    => 'Course Description',
                     61:        'ccc_prereq'         => 'Prerequisites',
1.7       www        62:        'cdc_classhours'     => 'Class Hours',
1.5       www        63:        'ddd_officehours'    => 'Office Hours',
                     64:        'eee_helproom'       => 'Helproom Hours',
1.7       www        65:        'efe_projectinfo'    => 'Project Information',
1.5       www        66:        'fff_examinfo'       => 'Exam Information',
1.7       www        67:        'fgf_deadlines'      => 'Deadlines',
1.5       www        68:        'ggg_grading'        => 'Grading Information',
1.7       www        69:        'hhh_readings'       => 'Readings',
                     70:        'iii_coursepack'     => 'Coursepack',
                     71:        'jjj_weblinks'       => 'Web Links',
1.9       www        72:        'kkk_textbook'       => 'Textbook',
                     73:        'lll_includeurl'     => 'URLs To Include in Syllabus');
1.5       www        74: 
1.14      www        75: # ------------------------------------------------------------ Get query string
                     76:     &Apache::loncommon::get_unprocessed_cgi
                     77:                         ($ENV{'QUERY_STRING'},['forcestudent','register']);
                     78: # ----------------------------------------------------- Force menu registration
                     79:     my $addentries='';
                     80:     if ($ENV{'form.register'}) {
                     81:        $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
                     82: 	   '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
                     83:        $r->print(&Apache::lonmenu::registerurl(1));
                     84:     }
1.6       www        85: # --------------------------------------------------------------- Force Student
                     86:     my $forcestudent='';
                     87:     if ($ENV{'form.forcestudent'}) { $forcestudent='student'; };
1.5       www        88:        
1.3       www        89: # ------------------------------------- There is such a course, get environment
1.2       www        90:     my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
1.14      www        91:     $r->print('</head>'.&Apache::loncommon::bodytag
1.15      www        92:        ("Syllabus",$forcestudent,$addentries,'',$cdom,$ENV{'form.register'}));
1.2       www        93:     $r->print('<h1>'.$courseenv{'description'}.'</h1><h3>'.
                     94:               $Apache::lonnet::domaindescription{$cdom}.'</h3>');
1.4       www        95:     my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
1.5       www        96:     my $allowed=0;
1.4       www        97: 
1.2       www        98: # This handler might be called anonymously ...
                     99: # ----------------------------------------------------- Only if not public call
                    100:     if ($ENV{'user.environment'}) {
1.1       www       101: # does this user have privileges to post, etc?
1.2       www       102:        if ($ENV{'request.course.id'}) {
                    103:           $allowed=&Apache::lonnet::allowed('srm',$ENV{'request.course.id'});
1.6       www       104:           if ($forcestudent) { $allowed=0; }
1.2       www       105:        }
1.6       www       106:        if ($allowed) {
1.12      www       107:           $r->print('<p>'.
1.16    ! www       108: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'</p><p>This syllabus can be publicly viewed at <tt>http://'.
1.10      www       109: 		    $Apache::lonnet::hostname{$homeserver}.$r->uri.'</tt>'.
                    110:                &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
                    111: 	  '<p><a href="'.$r->uri.'?forcestudent=1">Show Student View</a>'.
                    112:           &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').
                    113:           '</p>');
1.6       www       114:       }
1.5       www       115:        if (($allowed) && ($ENV{'form.storesyl'})) {
                    116: 	   foreach (keys %syllabusfields) {
                    117:                my $field=$ENV{'form.'.$_};
                    118:                $field=~s/\s+$//s;
1.11      www       119:                $field=&Apache::lonfeedback::clear_out_html($field,1);
1.7       www       120: 	       $syllabus{$_}=$field;
1.9       www       121:                if ($_ eq 'lll_includeurl') { # clean up included URLs
                    122:                   my $field='';
                    123: 	          foreach (split(/\n/,$syllabus{$_})) {
                    124: 		      my $url=$_;
                    125: # get rid of leading and trailing spaces
                    126:                       $url=~s/^\s+//;
                    127:                       $url=~s/\s+$//;
                    128:                       if ($url=~/^http\:\/\/([^\/]+)\/(.+)$/) {
                    129:                           my $remainder=$2;
                    130: # remove the hostname from internal URLs
                    131: 		          foreach (keys %Apache::lonnet::hostname) {
                    132:                               if ($1=~/$Apache::lonnet::hostname{$_}/i) {
                    133: 			         $url=$remainder;
                    134: 			      }
                    135: 		          }
                    136: 		      }
                    137: # norm internal URLs
                    138:                       unless ($url=~/^http\:/) {
                    139: 		          $url=&Apache::lonnet::clutter($url);
                    140:                       }
                    141: # re-assemble field
                    142:                       if ($url) {
                    143: 		          $field.=$url."\n";
                    144:                       }
                    145: 		  }
                    146:                   $syllabus{$_}=$field;
                    147: 	      }
1.5       www       148:            }
                    149:            $syllabus{'uploaded.domain'}=$ENV{'user.domain'};
                    150:            $syllabus{'uploaded.name'}=$ENV{'user.name'};
                    151:            $syllabus{'uploaded.lastmodified'}=time;
                    152:            &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
                    153:        }
1.4       www       154:     }
                    155: # ---------------------------------------------------------------- Get syllabus
1.5       www       156:     if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
1.8       www       157:        my $lastmod=$syllabus{'uploaded.lastmodified'};
                    158:        $lastmod=($lastmod?localtime($lastmod):'never');
                    159: 
1.4       www       160:        $r->print('<table><tr><td>Uploaded:</td><td>'.
1.7       www       161:  &Apache::loncommon::aboutmewrapper(
1.4       www       162:  &Apache::loncommon::plainname($syllabus{'uploaded.name'},
1.7       www       163:                      $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
1.4       www       164:                      $syllabus{'uploaded.domain'}).
1.8       www       165:  '</td></tr><tr><td>Last updated:</td><td>'.
                    166:                      $lastmod.
1.5       www       167:                      '</td></tr></table><p>');
                    168:        if ($allowed) {
                    169: 	   $r->print('<form method="post">');
                    170:        }
                    171:        foreach (sort keys %syllabusfields) {
                    172:           if (($syllabus{$_}) || ($allowed)) {
                    173:               my $message=$syllabus{$_};
1.9       www       174:               if ($_ eq 'lll_includeurl') { # this is the "included" field
                    175: 		  my $urls=$message;
                    176:                   $message='';
                    177:                   foreach my $filelink (split(/\n/,$urls)) {
                    178: 		      my $output='';
                    179: # embed style?
                    180: 		      my ($curfext)=($filelink=~/\.([^\.]+)$/);
                    181:                       my $embstyle=&Apache::loncommon::fileembstyle($curfext);
1.12      www       182: 	              if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
1.9       www       183: # make ssi call and remove everything but the body contents
1.13      www       184: 			  $output=&Apache::lonnet::ssi_body($filelink);
1.9       www       185: 	              } elsif ($embstyle eq 'img') {
                    186: # embed as an image
                    187:                          $output='<img src="'.$filelink.'" />';
                    188: 		      }
                    189:                       $message.='<p>'.$output.'</p>';
                    190:                   }
                    191:                   if ($allowed) {
                    192:                      $r->print('<h3>'.$syllabusfields{$_}.
1.10      www       193:           &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
                    194: 	  '<p><a href="'.$r->uri.'?forcestudent=1">Show Student View</a>'.
                    195:  &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
1.9       www       196: 		 } else {
                    197:                   $r->print($message);
                    198:                  } 
                    199:               } else {
                    200:                  $message=~s/\n/\<br \/\>/g;
                    201:                  $message
1.5       www       202:              =~s/(http\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
1.9       www       203: 	         $message=&Apache::lontexconvert::msgtexconverted($message);
                    204:                  $r->print('<h3>'.$syllabusfields{$_}.'</h3><blockquote>'.
1.5       www       205:                         $message.'</blockquote>');
1.9       www       206: 	     }
1.5       www       207:               if ($allowed) {
                    208:                  $r->print('<br /><textarea cols="80" rows="6" name="'.$_.'">'.
                    209: 			   $syllabus{$_}.
                    210:            '</textarea><input type="submit" name="storesyl" value="Store" />');
                    211: 	      }
                    212: 	  }
                    213:        }
                    214:        if ($allowed) {
                    215: 	   $r->print('</form>');
                    216:        }
                    217:        $r->print('</p>');
1.4       www       218:     } else {
                    219:        $r->print('<p>No syllabus information provided.</p>');
1.1       www       220:     }
                    221:     $r->print('</body></html>');
                    222:     return OK;
                    223: } 
                    224: 
                    225: 1;
                    226: __END__

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