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- Eliminate duplicate, non-functional RichText/PlainText link.

    1: # The LearningOnline Network
    2: # Bulletin Board Handler
    3: #
    4: # $Id: lonbulletin.pm,v 1.63 2011/05/02 18:32:30 raeburn Exp $
    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::lonbulletin;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common);
   33: use Apache::loncommon;
   34: use Apache::lonnet;
   35: use Apache::lontexconvert;
   36: use Apache::lonfeedback;
   37: use Apache::lonlocal;
   38: use Apache::lonhtmlcommon;
   39: use HTML::Entities();
   40: use LONCAPA;
   41: 
   42: sub handler {
   43:     my $r = shift;
   44:     &Apache::loncommon::content_type($r,'text/html');
   45:     $r->send_http_header;
   46:     return OK if $r->header_only;
   47:     my $target=$env{'form.grade_target'};
   48: 
   49: # ------------------------------------------------------------ Print the screen
   50:     if ($target eq 'tex') {
   51:         $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
   52:     }
   53:     my (undef,undef,undef,undef,$marker)=split(/\//,$r->uri);
   54: # Is this even in a course?
   55:     if (!$env{'request.course.id'}) {
   56:         &Apache::loncommon::simple_error_page($r,'Not in a course',
   57:                                               'Not in a course');
   58:         return OK;
   59:     }
   60: 
   61:     $marker=~s/\D//g;
   62: 
   63:     if (!$marker) {
   64:         &Apache::loncommon::simple_error_page($r,'Invalid Call',
   65:                                               'Invalid Call');
   66:         return OK;
   67:     }
   68: 
   69:     my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
   70:     my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
   71:     my ($group,$grp_desc);
   72: 
   73: # --------------------------------------------------------- The syllabus fields
   74:     my %syllabusfields=&Apache::lonlocal::texthash(
   75:        'aaa_title'         => 'Topic',
   76:        'bbb_content'       => 'Task',
   77:        'ccc_webreferences' => 'Web References');
   78: 
   79: # ------------------------------------------------------------ Get Query String
   80:     &Apache::loncommon::get_unprocessed_cgi
   81:                 ($ENV{'QUERY_STRING'},['forcestudent','forceedit','register',
   82:                                        'origpage','group','ref']);
   83: # ----------------------------------------------------- Force menu registration
   84:     my %addentries;
   85:     if ($env{'form.origpage'}) {
   86:         $addentries{'onload'} = "document.location='#newpost';";
   87:     }
   88: # --------------------------------------------------------------- Force Student
   89:     my $forcestudent='';
   90:     if ($env{'form.forcestudent'}) { $forcestudent='student'; }
   91: 
   92:     my $forceedit='';
   93:     if ($env{'form.forceedit'}) { $forceedit='edit'; }
   94:     my $refarg = '';
   95:     if (exists($env{'form.ref'})) { $refarg = 'ref='.$env{'form.ref'}; }
   96: 
   97:     my %syllabus=&Apache::lonnet::dump('bulletinpage_'.$marker,$dom,$crs);
   98: 
   99:     my $boardurl = $r->uri;
  100:     if ($boardurl =~ m|/adm/\Q$dom\E/\Q$crs\E/\d+/bulletinboard|) {
  101:         if (!exists($syllabus{'group'})) {
  102:             &Apache::loncommon::simple_error_page($r,'Group information missing',
  103:                                                  'Group information missing');
  104: 
  105:             return OK;
  106:         } else {
  107:             $group = $syllabus{'group'};
  108:             if ($group eq '') {
  109:                 &Apache::loncommon::simple_error_page($r,'Invalid group',
  110:                                                      'Invalid group');
  111:                 return OK;
  112:             }
  113:             my %curr_groups = &Apache::longroup::coursegroups($dom,$crs,$group);
  114:             if (!defined($curr_groups{$group})) {
  115:                 &Apache::loncommon::simple_error_page($r,'Invalid group',
  116:                                                      'Invalid group');
  117:                 return OK;
  118:             } else {
  119:                 my %content = &Apache::longroup::get_group_settings(
  120:                                                           $curr_groups{$group});
  121:                 $grp_desc = &unescape($content{'description'});
  122:             }
  123:         }
  124:     }
  125: 
  126: # --------------------------------------- There is such a user, get environment
  127:     if ($target ne 'tex') {
  128:         my $course_or_group;
  129:         if($group eq '') {
  130:             $course_or_group="Course";
  131:         } else {
  132:             $course_or_group="Group";
  133:         }
  134:         my $start_page =
  135:             &Apache::loncommon::start_page("$course_or_group Discussion Board",undef,
  136:                                            {'function'       => $forcestudent,
  137:                                             'add_entries'    => \%addentries,
  138:                                             'domain'         => $dom,
  139:                                             'force_register' =>
  140:                                                 $env{'form.register'}});
  141:         $r->print($start_page);
  142:         if ($group ne '' && $env{'form.group'} eq $group) {
  143:             my $gpterm =  &Apache::loncommon::group_term();
  144:             my $ucgpterm = $gpterm;
  145:             $ucgpterm =~ s/^(\w)/uc($1)/e;
  146:             my ($groupboards,$boards) =
  147:                 &Apache::longroup::get_group_bbinfo($dom,$crs,$group,$boardurl);
  148:             my $boardtitle;
  149:             if ((ref($groupboards) eq 'ARRAY') && (@{$groupboards} > 0)) {
  150:                 $boardtitle = $$boards{$$groupboards[0]}{'title'};
  151:             }
  152:             $boardurl .= '?register=1&group='.$group;
  153:             $r->print(&groupboard_breadcrumbs($dom,$crs,$group,$refarg,$gpterm,
  154:                                 $ucgpterm,$grp_desc,$boardurl,$boardtitle));
  155:         }
  156:     }
  157:     my ($allowed);
  158:     if ($group ne '') {
  159:         $allowed=&Apache::lonnet::allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
  160:         if (!$allowed) {
  161:             $allowed = &Apache::lonnet::allowed('cgb',$env{'request.course.id'}.
  162:                                                 '/'.$group);
  163:         }
  164:         if (!$allowed) {
  165:             if ((!&Apache::lonnet::allowed('vcg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) &&
  166:                (!&Apache::lonnet::allowed('vgb',$env{'request.course.id'}.
  167:                                                 '/'.$group))) {
  168:                  &print_end_page($r,$target);
  169:                  return OK;
  170:             }
  171:         }
  172:     } else {
  173:         $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
  174:     }
  175: 
  176:     my $privileged=$allowed;
  177:     if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
  178:         $forcestudent='student';
  179:     }
  180:     if ($forcestudent or $target eq 'tex') { $allowed=0; }
  181: 
  182:     if ($allowed) {
  183:         my $query_str = 'forcestudent=1';
  184:         if (($group ne '') && ($env{'form.group'} eq $group)) {
  185:             $query_str.='&group='.$group.'&'.$refarg;
  186:         }
  187:         if ($env{'form.register'}) {
  188:             $query_str .= '&register='.$env{'form.register'};
  189:         }
  190:         #Function Box for Edit Mode.
  191:         my $functionbox = &Apache::lonhtmlcommon::start_funclist();
  192:         $functionbox .=  &Apache::lonhtmlcommon::add_item_funclist(
  193:                              '<a href="'.$r->uri.'?'.$query_str.'">'.&mt('Show Student View').'</a>'.
  194:                               &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView'));
  195:         $functionbox.=&Apache::lonhtmlcommon::end_funclist();
  196:         $r->print(&Apache::loncommon::head_subbox($functionbox).&Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes',&mt('Help with filling in text boxes')));
  197:     } elsif ($privileged and $target ne 'tex') {
  198:         my $query_str = 'forceedit=edit';
  199:         if (($group ne '') && ($env{'form.group'} eq $group)) {
  200:             $query_str.='&amp;group='.$group.'&amp;'.$refarg;
  201:         }
  202:         if ($env{'form.register'}) {
  203:             $query_str .= '&amp;register='.$env{'form.register'};
  204:         }
  205:         #Functionbox for Student view.
  206:         my $functionbox = &Apache::lonhtmlcommon::start_funclist();
  207:         $functionbox .=  &Apache::lonhtmlcommon::add_item_funclist(
  208:                              "<a href='".$r->uri.'?'.$query_str."'>".&mt('Edit')."</a>");
  209:         $functionbox.=&Apache::lonhtmlcommon::end_funclist();
  210:         $r->print(&Apache::loncommon::head_subbox($functionbox));
  211:     }
  212: 
  213:     if (($env{'form.uploaddoc.filename'}) &&
  214:         ($env{'form.storeupl'}) && ($allowed)) {
  215:         if ($env{'form.uploaddoc.filename'}=~/\.(gif|jpg|png|jpeg)$/i) {
  216:             if ($syllabus{'uploaded.photourl'}) {
  217:                 &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
  218:             }
  219:             if ($group ne '') {
  220:                 $syllabus{'uploaded.photourl'}=
  221:                     &Apache::lonnet::userfileupload('uploaddoc','coursedoc',
  222:                                                     'bulletin/'.$group.'/'.$marker);
  223:             } else {
  224:                 $syllabus{'uploaded.photourl'}=
  225:                     &Apache::lonnet::userfileupload('uploaddoc','coursedoc',
  226:                                                       'bulletin/'.$marker);
  227:             }
  228:         }
  229:         $syllabus{'uploaded.lastmodified'}=time;
  230:         &Apache::lonnet::put('bulletinpage_'.$marker,\%syllabus,$dom,$crs);
  231:     }
  232:     if (($allowed) && ($env{'form.storesyl'})) {
  233:         foreach my $syl_field (keys(%syllabusfields)) {
  234:             my $field=$env{'form.'.$syl_field};
  235:             $field=~s/\s+$//s;
  236:             $field=&Apache::lonfeedback::clear_out_html($field,1);
  237:             $syllabus{$syl_field}=$field;
  238:         }
  239:         $syllabus{'uploaded.lastmodified'}=time;
  240:         &Apache::lonnet::put('bulletinpage_'.$marker,\%syllabus,$dom,$crs);
  241:     }
  242: 
  243: # ---------------------------------------------------------------- Get discussion board
  244:     if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
  245:         #Print Topic as Heading
  246:         my $titletext=&HTML::Entities::encode($syllabus{'aaa_title'},'<>&"');;
  247:         if ($target ne 'tex') {
  248:             $r->print('<h2>'.$titletext.'</h2>');
  249:         } else {
  250:             $r->print('\\\\\textbf{'.&Apache::lonxml::xmlparse($r,'tex',$titletext).'}\\\\');
  251:         }
  252:         #Outputbox and Inputbox for Topic
  253:         if ($allowed) {
  254:             $r->print('<form method="post" action="" enctype="multipart/form-data">');
  255:             &Apache::lontemplate::print_start_template($r,&mt('Title'),'LC_Box');
  256:             $r->print($titletext);
  257: 			$r->print("<br /><div>");
  258: 			&Apache::lontemplate::print_textarea_template($r, $syllabus{'aaa_title'},
  259: 				'aaa_title', Apache::lontemplate->RICH_TEXT_ALWAYS_OFF);
  260: 			&Apache::lontemplate::print_saveall_template($r);
  261: 			$r->print("</div>");
  262: 			&Apache::lontemplate::print_end_template($r);
  263:         }
  264:         if ($syllabus{'uploaded.photourl'}) {
  265:             &Apache::lonnet::allowuploaded('/adm/syllabus',
  266:                                            $syllabus{'uploaded.photourl'});
  267:         }
  268:         #Outputbox and Inputbox for Image upload
  269:         if ($allowed) {
  270:         	my $message = '<img src="'.$syllabus{'uploaded.photourl'}.'" alt="'.&mt('Image').'"/>';
  271:         	&Apache::lontemplate::print_start_template($r, &mt('Upload a Photo'),'LC_Box');
  272:             $r->print($message);
  273:             $r->print("<br /><br />");
  274:             $r->print(
  275:                 '<input type="hidden" name="forceedit" value="edit" />'.
  276:                 '<input type="file" name="uploaddoc" size="50" />'.
  277:                 '<input type="submit" name="storeupl" value="'.&mt('Upload').'" />'.
  278:                 '<input type="hidden" name="forceedit" value="edit" />');
  279:             &Apache::lontemplate::print_end_template($r);
  280:         }
  281:         #Image in Student view.
  282:         elsif($syllabus{'uploaded.photourl'} && $target ne 'tex'){
  283:             $r->print('<img src="'.$syllabus{'uploaded.photourl'}.'" alt="'.&mt('Image').'"/>');
  284:         }
  285:         
  286:         my %custom_handlers = ( 'aaa_title' => sub {} );
  287: 		&Apache::lontemplate::print_template_fields($r, \%syllabus, \%syllabusfields, 
  288: 			$target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML, \%custom_handlers);
  289:         if ($allowed) {
  290:             $r->print('</form>');
  291:         }
  292:         if ($target ne 'tex'){
  293:             $r->print('<br/><br/><hr/><br/>');
  294:         }
  295:         else {
  296:             $r->print(&Apache::lonxml::xmlparse($r,'tex','<br/><br/><hr/><br/>'));
  297:         }
  298:     } else {
  299:         if ($target ne 'tex') {
  300:            $r->print('<p>'.&mt('No page information provided.').'</p>');
  301:         }
  302:     }
  303:     #Lists discussion posts and box for a new discussion post.
  304:     if ($target ne 'tex') {
  305:         $r->print(&Apache::lonfeedback::list_discussion
  306:                       ('board','OPEN','bulletin___'.$marker.'___'.
  307:                        $r->uri,undef,$group));
  308:     } else {
  309:         $r->print('\\\\'.&Apache::lonxml::xmlparse($r,'tex',&Apache::lonfeedback::list_discussion
  310:                      ('board','OPEN','bulletin___'.$marker.'___'.
  311:                       $r->uri,undef,$group)));
  312:     }
  313:     &print_end_page($r,$target);
  314:     return OK;
  315: }
  316: 
  317: sub print_end_page {
  318:     my ($r,$target) = @_;
  319:     if ($target ne 'tex') {
  320:         $r->print(&Apache::loncommon::end_page());
  321:     } else {
  322:         $r->print('\end{document}');
  323:     }
  324: }
  325: 
  326: sub groupboard_breadcrumbs {
  327:     my ($cdom,$cnum,$group,$refarg,$gpterm,$ucgpterm,$description,$boardurl,
  328:         $boardtitle)= @_;
  329:     &Apache::lonhtmlcommon::clear_breadcrumbs();
  330:     if ($refarg ne '') {
  331:         &Apache::lonhtmlcommon::add_breadcrumb
  332:             ({href=>"/adm/coursegroups",
  333:               text=>"Groups",
  334:               title=>"View course groups"});
  335:     }
  336:     &Apache::lonhtmlcommon::add_breadcrumb
  337:         ({href=>"/adm/$cdom/$cnum/$group/smppg?$refarg",
  338:           text=>"$ucgpterm: $description",
  339:           title=>"Go to group's home page"},
  340:          {href=>"/adm/groupboards?group=$group&amp;$refarg",
  341:           text=>"Discussion Boards",
  342:           title=>"Display group discussion boards"},
  343:          {href=>"$boardurl",
  344:           text=>"$boardtitle",
  345:           title=>"$boardtitle"},
  346:         );
  347:     my $output .= &Apache::lonhtmlcommon::breadcrumbs(&mt('[_1] discussion boards - [_2]',$gpterm,$description));
  348:     return $output;
  349: }
  350: 
  351: 1;
  352: __END__