File:  [LON-CAPA] / loncom / interface / lonwhatsnew.pm
Revision 1.35: download - view: text, annotated - select for diffs
Mon Dec 5 19:27:53 2005 UTC (18 years, 6 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
Default time interval for versions checking now 1 week. Name of "users_in_queue" subroutine in bridgetasks.pm had been changed.  Sanity check for resources returned from navmap->getResourceByUrl(). Remove debugging and fix some typos.

    1: #
    2: # $Id: lonwhatsnew.pm,v 1.35 2005/12/05 19:27:53 raeburn Exp $
    3: #
    4: # Copyright Michigan State University Board of Trustees
    5: #
    6: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    7: #
    8: # LON-CAPA is free software; you can redistribute it and/or modify
    9: # it under the terms of the GNU General Public License as published by
   10: # the Free Software Foundation; either version 2 of the License, or
   11: # (at your option) any later version.
   12: #
   13: # LON-CAPA is distributed in the hope that it will be useful,
   14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   16: # GNU General Public License for more details.
   17: #
   18: # You should have received a copy of the GNU General Public License
   19: # along with LON-CAPA; if not, write to the Free Software
   20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   21: #
   22: # /home/httpd/html/adm/gpl.txt
   23: #
   24: # http://www.lon-capa.org/
   25: #
   26: 
   27: 
   28: package Apache::lonwhatsnew;
   29: 
   30: use strict;
   31: use lib qw(/home/httpd/lib/perl);
   32: use Apache::lonnet;
   33: use Apache::loncommon();
   34: use Apache::lonhtmlcommon();
   35: use Apache::lonlocal;
   36: use Apache::loncoursedata();
   37: use Apache::lonnavmaps();
   38: use Apache::lonuserstate;
   39: use Apache::Constants qw(:common :http);
   40: use Time::Local;
   41: use GDBM_File;
   42: 
   43: #----------------------------
   44: # handler
   45: #
   46: #----------------------------
   47: 
   48: sub handler {
   49:     my $r = shift;
   50:     if ($r->header_only) {
   51:         &Apache::loncommon::content_type($r,'text/html');
   52:         $r->send_http_header;
   53:         return OK;
   54:     }
   55:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['command']);
   56: 
   57:     my $command;
   58:     if ($env{'form.action'} eq 'reset') {
   59:         $command = 'reset';
   60:     } elsif ($env{'form.action'} eq 'update') {
   61:         $command = 'update';
   62:     } else {
   63:         $command = $env{'form.command'};
   64:     }
   65: 
   66:     &Apache::loncommon::content_type($r,'text/html');
   67:     $r->send_http_header;
   68:     $r->print(&display_header($command));
   69:     if (! (($env{'request.course.fn'}) && (&Apache::lonnet::allowed('bre',$env{'request.course.id'})))) {
   70:         # Not in a course, or not allowed to view action items
   71:         $env{'user.error.msg'}="/adm/whatsnew:bre:0:0:Cannot display what's new screen";
   72:         return HTTP_NOT_ACCEPTABLE;
   73:     }
   74: 
   75:     &Apache::lonhtmlcommon::clear_breadcrumbs();
   76:     if (($command eq 'chgthreshold') && (&Apache::lonnet::allowed('vgr',$env{'request.course.id'}))) {
   77:         &Apache::lonhtmlcommon::add_breadcrumb
   78:             ({href=>'/adm/whatsnew?command=threshold',
   79:               text=>"Change thresholds"});
   80:         $r->print(&Apache::lonhtmlcommon::breadcrumbs
   81:             (undef,'Course Action Items','Course_Action_Items_Thresholds'));
   82:     } else {
   83:         &Apache::lonhtmlcommon::add_breadcrumb
   84:             ({href=>'/adm/whatsnew',
   85:               text=>"Display Action Items"});
   86:         $r->print(&Apache::lonhtmlcommon::breadcrumbs
   87:             (undef,'Course Action Items','Course_Action_Items_Display'));
   88:     }
   89:     &display_main_box($r,$command);
   90:     return OK;
   91: }
   92: 
   93: #------------------------------
   94: # display_main_box
   95: #
   96: # Display all the elements within the main box
   97: #------------------------------
   98:                                                                                 
   99: sub display_main_box {
  100:     my ($r,$command) = @_;
  101:     my $domain=&Apache::loncommon::determinedomain();
  102:     my $tabbg=&Apache::loncommon::designparm('coordinator.tabbg',$domain);
  103:     $r->print('<table width="100%" border="0" cellpadding="5" cellspacing="0"><tr><td width="100%">');
  104: 
  105:     my %threshold_titles = (
  106:                          av_attempts => 'Average number of attempts',
  107:                          degdiff => 'Degree of difficulty',
  108:                          numstudents => 'Total number of students with submissions',
  109:     );
  110:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
  111:     my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
  112: 
  113:     if (($command eq 'chgthreshold') && (&Apache::lonnet::allowed('vgr',$env{'request.course.id'}))) {
  114:         &display_config_box($r,$command,$tabbg,\%threshold_titles,$cdom,$crs);
  115:     } else {
  116:         &display_actions_box($r,$command,\%threshold_titles,$cdom,$crs);
  117:     }
  118:     $r->print(<<END_OF_BLOCK);
  119:   </td>
  120:  </tr>
  121: </table><br />
  122: </body>
  123: </html>
  124: END_OF_BLOCK
  125: }
  126: 
  127: #-------------------------------
  128: # display_header
  129: #
  130: # Display the header information and set
  131: # up the HTML
  132: #-------------------------------
  133: 
  134: sub display_header{
  135:     my $html=&Apache::lonxml::xmlbegin();
  136:     my $bodytag=&Apache::loncommon::bodytag('Course Action Items');
  137:     return(<<ENDHEAD);
  138: $html
  139: <head>
  140: <title>Course Action Items</title>
  141: </head>
  142: $bodytag
  143: ENDHEAD
  144: }
  145: 
  146: #-------------------------------
  147: # display_actions_box
  148: #
  149: # Display the action items
  150: #
  151: #-------------------------------
  152:                                                                                 
  153: sub display_actions_box() {
  154:     my ($r,$command,$threshold_titles,$cdom,$crs) = @_;
  155: 
  156:     my $rowColor1 = "#ffffff";
  157:     my $rowColor2 = "#eeeeee";
  158: 
  159:     my %unread = ();
  160:     my %ungraded = ();
  161:     my %bombed = ();
  162:     my %triggered = ();
  163:     my %changed = ();
  164:     my @newmsgs = ();
  165:     my @critmsgs = ();
  166:     my @newdiscussions = ();
  167:     my @tograde = ();
  168:     my @bombs = ();
  169:     my @warnings = ();
  170:     my $msgcount = 0;
  171:     my $critmsgcount = 0;
  172: 
  173:     my %res_title = ();
  174:     my %show = ();
  175:     my $needitems = 0;
  176:     my $boxcount = 0;
  177: 
  178:     my $domain=&Apache::loncommon::determinedomain();
  179:     my $function;
  180:     if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
  181:         $function='coordinator';
  182:     }
  183:     if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
  184:         $function='admin';
  185:     }
  186: 
  187:     my %threshold = (
  188:                       av_attempts => 2,
  189:                       degdiff => 0.5,
  190:                       numstudents => 2,
  191:                      );
  192: 
  193:     my $pgbg=&Apache::loncommon::designparm($function.'.pgbg',$domain);
  194:     my $tabbg=&Apache::loncommon::designparm($function.'.tabbg',$domain);
  195: 
  196:     unless ($env{'request.course.id'}) {
  197:         $r->print('<br /><b><center>You are accessing an invalid course.</center></b><br /><br />');
  198:         return;
  199:     }
  200: 
  201:     my %checkallowed = (
  202:              coursediscussion => &Apache::lonnet::allowed('pch',$env{'request.course.id'}),
  203:              handgrading => &Apache::lonnet::allowed('mgr',$env{'request.course.id'}),
  204:              abovethreshold => &Apache::lonnet::allowed('vgr',$env{'request.course.id'}),
  205:              haserrors => &Apache::lonnet::allowed('opa',$env{'request.course.id'}),
  206:              versionchanges => &Apache::lonnet::allowed('opa',$env{'request.course.id'}),
  207:              coursenormalmail => 1,
  208:              coursecritmail => 1,
  209:     );
  210: 
  211:     my $timediff = 604800;
  212:     my %display_settings = &get_display_settings();
  213:     my $now = time;
  214:     my %intervals = (
  215:                    -1 => 'since start of course',
  216:               2592000 => 'since last month',
  217:                604800 => 'since last week',
  218:                 86400 => 'since yesterday',
  219:     );
  220:     my $interval = $intervals{$timediff};
  221:     if ($timediff == -1) {
  222:         $timediff = time;
  223:     } 
  224:     my $starttime = $now - $timediff;
  225: 
  226:     my %headings = &Apache::lonlocal::texthash(
  227:                 coursediscussion =>  'Unread course discussion posts',
  228:                 handgrading =>  'Problems requiring handgrading',
  229:                 haserrors => 'Problems with errors',
  230:                 versionchanges => 'Resources in course with version changes '.$interval,
  231:                 coursenormalmail => 'New course message',
  232:                 coursecritmail => 'New critical messages in course',
  233:     );
  234: 
  235:     if ($checkallowed{'abovethreshold'}) {
  236:         &get_curr_thresholds(\%threshold,$cdom,$crs);
  237:     }
  238: 
  239:     $headings{'abovethreshold'} = &mt('Problems with av. attempts').' &ge; '.$threshold{'av_attempts'}.' '.&mt('or deg. difficulty').' &ge; '.$threshold{'degdiff'}.'<br /> '.&mt('and total number of students with submissions').' &ge; '.$threshold{'numstudents'};
  240: 
  241:     my @actionorder = ('handgrading','haserrors','abovethreshold','versionchanges','coursediscussion','coursenormalmail','coursecritmail');
  242: 
  243:     foreach my $key (keys(%checkallowed)) {
  244:         $show{$key} = 0;
  245:         if ($checkallowed{$key}) {
  246:             unless ($display_settings{$key} eq 'off') {
  247:                 $show{$key} = 1;
  248:             }
  249:         }
  250:     }
  251: 
  252:     foreach my $item (@actionorder) {
  253:         unless ($item eq 'coursenormalmail' || $item eq 'coursecritmail') {
  254:             if ($show{$item}) {
  255:                 $needitems = 1;
  256:                 last;
  257:             }
  258:         }
  259:     }
  260: 
  261: 
  262:     if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
  263: 	    &GDBM_READER(),0640)) {
  264: 	my $furl=$bighash{'first_url'};
  265: 	$r->print('<font size="+1"><a href="'.$furl.'">Go to first resource</a></font><a href="/adm/preferences?action=changecourseinit"></font><br />Change your preferences</a> to suppress display of this screen when accessing courses as Course Coordinator in the future.<br /><hr />');
  266: 	untie(%bighash);
  267:     }
  268: 
  269:     my $result;
  270: 
  271:     if ($command eq 'reset') {
  272:         $result = &process_reset($cdom,$crs);
  273:     } elsif ($command eq 'update') {
  274:         $result = &process_update($cdom,$crs,$threshold_titles);
  275:     }
  276:     if ($result) {
  277:         $r->print($result.'<hr width="100%" />');
  278:     }
  279:     $r->rflush();
  280: 
  281:     if ($needitems) {
  282:         &getitems(\%unread,\%ungraded,\%bombed,\%triggered,\%changed,\@newdiscussions,\@tograde,\@bombs,\@warnings,$rowColor1,$rowColor2,\%threshold,$cdom,$crs,\%res_title,\%show,$starttime);
  283:     }
  284:     if ($show{'coursenormalmail'}) {
  285:         &getnormalmail(\@newmsgs);
  286:     }
  287:     if ($show{'coursecritmail'}) {
  288:         &getcritmail(\@critmsgs);
  289:     }
  290: 
  291:     $r->print(qq|<a href="javascript:changeAll('hide');">Hide All</a>&nbsp;&nbsp;<a href="javascript:changeAll('show');">Show All</a>|);
  292: 
  293:     $r->print('<br /><table border="0" width="100%" cellpadding="2" cellspacing="4"><tr><td align="left" valign="top" width="45%">');
  294: 
  295:     my $displayed = 0;
  296:     my $totalboxes = keys(%checkallowed);
  297:     my $halfway = int($totalboxes/2) + $totalboxes%2;
  298:     foreach my $actionitem (@actionorder) {
  299:         if ($checkallowed{$actionitem}) {
  300:             if ($displayed == $halfway) {
  301:                 $r->print('</td><td width="5%">&nbsp;</td><td align="left" valign="top" width-"50%">');
  302:             }
  303:             &display_launcher($r,$actionitem,\%checkallowed,$tabbg,$rowColor1,$rowColor2,\%show,\%headings,\%res_title,\@tograde,\%ungraded,\@bombs,\%bombed,\%changed,\@warnings,\%triggered,\@newdiscussions,\%unread,$msgcount,\@newmsgs,$critmsgcount,\@critmsgs,$interval);
  304:             $displayed ++; 
  305:         }
  306:     }
  307:     $r->print('
  308:            </table>
  309:           </td>
  310:          </tr>
  311:         </table>
  312:       </td>
  313:     </tr>
  314:    </table>');
  315: }
  316: 
  317: #-------------------------------
  318: # display_config_box
  319: #
  320: # Display the threshold setting screen 
  321: #
  322: #-------------------------------
  323:                                                                                 
  324: sub display_config_box() {
  325:     my ($r,$command,$tabbg,$threshold_titles,$cdom,$crs) = @_;
  326:     my %threshold = ();
  327:     my $rowColor1 = "#ffffff";
  328:     my $rowColor2 = "#eeeeee";
  329:     my $rowColor;
  330: 
  331:     my @thresholditems = ("av_attempts","degdiff","numstudents");
  332:     my %threshold_titles = (
  333:                          av_attempts => 'Average number of attempts',
  334:                          degdiff => 'Degree of difficulty',
  335:                          numstudents => 'Total number of students with submissions',
  336:                          );
  337:     &get_curr_thresholds(\%threshold,$cdom,$crs);
  338: 
  339:     $r->print('<br /><form name="thresholdform" method="post"><table border="0" cellpadding="2" cellspacing="4"><tr><td align="left" valign="top" width="45%">
  340:            <table border="0" cellpadding="0" cellspacing="0" bgcolor="#000000">
  341:             <tr>
  342:              <td>
  343:                <table border="0" cellpadding="1" cellspacing="1" bgcolor="#000000">
  344:                 <tr>
  345:                 <td bgcolor="#ffffff">
  346:                  <table cellspacing="0" cellpadding="4" border="0">
  347:      <tr bgcolor="'.$tabbg.'">
  348:       <th>Threshold Name</th>
  349:       <th>Current value</th>
  350:       <th>Change?</th>
  351:      </tr>');
  352:     my $rowNum =0;
  353:     foreach my $type (@thresholditems) {
  354:         my $parameter = 'internal.threshold_'.$type;
  355: # onchange is javascript to automatically check the 'Set' button.
  356:         my $onchange = 'onFocus="javascript:window.document.forms'.
  357:               "['thresholdform'].elements['".$parameter."_setparmval']".
  358:               '.checked=true;"';
  359:         if ($rowNum %2 == 1) {
  360:             $rowColor = $rowColor1;
  361:         } else {
  362:             $rowColor = $rowColor2;
  363:         }
  364:         $r->print('
  365:      <tr bgcolor="'.$rowColor.'">
  366:       <td>'.$threshold_titles{$type}.'</td>
  367:       <td>'.&Apache::lonhtmlcommon::textbox($parameter.'_value',
  368:                                             $threshold{$type},
  369:                                             10,$onchange).'</td>
  370:       <td>'
  371:            .&Apache::lonhtmlcommon::checkbox($parameter.'_setparmval').
  372:       '</td>
  373:      </tr>');
  374:         $rowNum ++;
  375:     }
  376:     $r->print('</table></td></tr></table></td></tr></table>
  377:            <br /><input type="submit" name="threshold" value="Make changes" />
  378:                  <input type="hidden" name="action" value="update" />
  379:                </form>');
  380: }
  381: 
  382: sub display_launcher {
  383:     my ($r,$action,$checkallowed,$tabbg,$rowColor1,$rowColor2,$show,
  384:         $headings,$res_title,$tograde,$ungraded,$bombs,$bombed,$changed,
  385:         $warnings,$triggered,$newdiscussions,$unread,$msgcount,$newmsgs,
  386:                                        $critmsgcount,$critmsgs,$interval) = @_;
  387: 
  388:     if ($$checkallowed{$action}) {
  389:         &start_box($r,$tabbg,$show,$headings,$action);
  390:         if ($$show{$action}) {
  391:             if ($action eq 'handgrading') {    # UNGRADED ITEMS
  392:                 &display_handgrade($r,$tograde,$rowColor1,$rowColor2,
  393:                                                                     $ungraded);
  394:             } elsif ($action eq 'haserrors') { # BOMBS
  395:                 &display_haserrors($r,$bombs,$rowColor1,$rowColor2,$bombed,
  396:                                                                    $res_title);
  397:             } elsif ($action eq 'versionchanges') { # VERSION CHANGES
  398:                 &display_versionchanges($r,$changed,$res_title,$rowColor1,
  399:                                                          $rowColor2,$interval);
  400: 
  401:             } elsif ($action eq 'abovethreshold') { # DEGDIFF/AV. TRIES TRIGGERS
  402:                 &display_abovethreshold($r,$warnings,$triggered,$res_title,
  403:                                                         $rowColor1,$rowColor2);
  404:             } elsif ($action eq 'coursediscussion') { # UNREAD COURSE DISCUSSION
  405:                 &display_coursediscussion($r,$newdiscussions,$unread,
  406:                                                                    $res_title);
  407:             } elsif ($action eq 'coursenormalmail') { # NORMAL MESSAGES
  408:                 &display_coursenormalmail($r,$msgcount,$newmsgs,$rowColor1,
  409:                                                                    $rowColor2);
  410:             } elsif ($action eq 'coursecritmail') { # CRITICAL MESSAGES
  411:                 &display_coursecritmail($r,$critmsgcount,$critmsgs,$rowColor1,
  412:                                                                    $rowColor2);
  413:             }
  414:         }
  415:         &end_box($r);
  416:     }
  417:     return;
  418: }
  419: 
  420: sub getitems {
  421:     my ($unread,$ungraded,$bombed,$triggered,$changed,$newdiscussions,
  422:         $tograde,$bombs,$warnings,$rowColor1,$rowColor2,$threshold,$cdom,$crs,
  423:                                              $res_title,$show,$starttime) = @_;
  424:     my $navmap = Apache::lonnavmaps::navmap->new();
  425:     # force retrieve Resource to seed the part id cache we'll need it later
  426:     my @allres=$navmap->retrieveResources(undef,sub {if ($_[0]->is_problem) { $_[0]->parts();} return 1;});
  427:     my %lastreadtime;
  428:     my %resourcetracker;
  429: 
  430: # Resource version changes
  431:     if ($$show{'versionchanges'}) {
  432:         &checkversions($cdom,$crs,$navmap,$changed,$starttime);
  433:     }
  434: 
  435:     if ($$show{'coursediscussions'}) {   
  436:         my %lastread = &Apache::lonnet::dump('nohist_'.
  437:                         $env{'request.course.id'}.'_discuss',
  438:                         $env{'user.domain'},$env{'user.name'},'lastread');
  439:         foreach my $key (keys(%lastread)) {
  440:             my $newkey = $key;
  441:             $newkey =~ s/_lastread$//;
  442:             $lastreadtime{$newkey} = $lastread{$key};
  443:         }
  444:     }
  445:  
  446:     if ($$show{'abovethreshold'}) {
  447:         %resourcetracker =  &Apache::lonnet::dump('nohist_resourcetracker',
  448:                                                                    $cdom,$crs);
  449:     }
  450: 
  451:     my $warningnum = 0;
  452:     foreach my $resource (@allres) {
  453:         my $result = '';
  454:         my $applies = 0;
  455:         my $symb = $resource->symb();
  456:         %{$$bombed{$symb}} = ();
  457:         %{$$ungraded{$symb}} = ();
  458:         %{$$triggered{$symb}} = ();
  459:         $$triggered{$symb}{numparts} = 0;
  460:         my $title = $resource->compTitle();
  461:         $$res_title{$symb} = $title;
  462:         my $ressymb = $resource->wrap_symb();
  463: 
  464: # Check for unread discussion postings
  465:         if ($$show{'coursediscussion'}) {
  466:             &check_discussions($cdom,$crs,$resource,$symb,$ressymb,$title,
  467:                                        $newdiscussions,$unread,\%lastreadtime);
  468:         }
  469: 
  470: # Check for ungraded problems
  471:         if ($resource->is_problem()) {
  472:             if ($$show{'handgrading'}) {
  473:                 &check_handgraded($resource,$symb,$title,$cdom,$crs,$ungraded,
  474:                                                                      $tograde);
  475:             }
  476:         }
  477: 
  478: # Check for bombs
  479:         if ($$show{'haserrors'}) {
  480:             &check_bombed($resource,$symb,$title,$bombs,$bombed);
  481:         }
  482: 
  483: # Maxtries and degree of difficulty for problem parts, unless handgradeable
  484:         if ($$show{'abovethreshold'}) {  
  485:             &check_thresholds($resource,$symb,\%resourcetracker,$triggered,
  486:                        $threshold,$warnings,$warningnum,$rowColor1,$rowColor2);
  487:         }
  488: 
  489:     }
  490: }
  491: 
  492: sub check_discussions {
  493:     my ($cdom,$crs,$resource,$symb,$ressymb,$title,$newdiscussions,$unread,
  494:                                                            $lastreadtime) = @_;  
  495: # Check for unread discussion postings
  496:     if ($resource->hasDiscussion()) {
  497:         my $prevread = 0;
  498:         my $unreadcount = 0;
  499:         %{$$unread{$ressymb}} = ();
  500:         $$unread{$ressymb}{'title'} = $title;
  501:         $$unread{$ressymb}{'symb'} = $symb;
  502:         if (defined($$lastreadtime{$ressymb})) {
  503:             $prevread = $$lastreadtime{$ressymb};
  504:         }
  505:         my %contrib = &Apache::lonnet::restore($ressymb,
  506:                                          $env{'request.course.id'},$cdom,$crs);
  507:         if ($contrib{'version'}) {
  508:             for (my $id=1;$id<=$contrib{'version'};$id++) {
  509:                 unless (($contrib{'hidden'}=~/\.$id\./) || 
  510:                         ($contrib{'deleted'}=~/\.$id\./)) {
  511:                     if ($prevread <$contrib{$id.':timestamp'}) {
  512:                         $$unread{$ressymb}{$unreadcount} = $id.': '.$contrib{$id.':subject'};
  513:                         $unreadcount ++;
  514:                     }
  515:                 }
  516:             }
  517:         }
  518:         if ($unreadcount) { push(@{$newdiscussions}, $ressymb); }
  519:     }
  520: }
  521: 
  522: sub check_handgraded {
  523:     my ($resource,$symb,$title,$cdom,$cnum,$ungraded,$tograde) = @_;
  524:     if ($resource->is_problem()) {
  525:         my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
  526:         my $partlist=$resource->parts();
  527:         my $handgradeable;
  528:         foreach my $part (@$partlist) {
  529:             if ($resource->handgrade($part) eq 'yes') {
  530:                 $handgradeable=1; last;
  531:             }
  532:         }
  533:         if ($handgradeable) {
  534:             my @ungraded = &Apache::bridgetask::get_queue_symb_status(
  535:                                              'gradingqueue',$symb,$cdom,$cnum);
  536:             if (@ungraded > 0) {
  537:                 $$ungraded{$symb}{count} = scalar(@ungraded);
  538:                 $$ungraded{$symb}{title} = $title;
  539:                 push(@{$tograde}, $symb);
  540:             }
  541:         }
  542:     }
  543: }
  544: 
  545: sub check_bombed {
  546:     my ($resource,$symb,$title,$bombs,$bombed) = @_;
  547:     if ($resource->getErrors()) {
  548:         my $errors = $resource->getErrors();
  549:         $errors =~ s/^,//;
  550:         my @bombs = split(/,/, $errors);
  551:         my $errorcount = scalar(@bombs);
  552:         my $errorlink = '<a href="/adm/email?display='.
  553:                         &Apache::lonnet::escape($bombs[0]).'">'.
  554:                         $title.'</a>';
  555:         $$bombed{$symb}{errorcount} = $errorcount;
  556:         $$bombed{$symb}{errorlink} = $errorlink;
  557:         push(@{$bombs}, $symb);
  558:     }
  559: }
  560: 
  561: sub check_thresholds {
  562:     my ($resource,$symb,$resourcetracker,$triggered,$threshold,$warnings,
  563:                                        $warningnum,$rowColor1,$rowColor2) = @_;
  564: # Compile maxtries and degree of difficulty for problem parts, unless handgradeable
  565:     my @parts = @{$resource->parts()};
  566:     my %stats;
  567:     my %lastreset = ();
  568:     my $warning = 0;
  569:     my $rowColor;
  570:     foreach my $part (@parts) {
  571:         if ($resource->handgrade($part) eq 'yes') {
  572:             next;
  573:         }
  574:         %{$stats{$part}} = ();
  575:         my ($attempts,$users,$corrects,$degdiff,$av_attempts);
  576:         if (exists($$resourcetracker{$symb."\0".$part."\0attempts"})) {
  577:             $attempts = $$resourcetracker{$symb."\0".$part."\0attempts"};
  578:         }
  579:         if (exists($$resourcetracker{$symb."\0".$part."\0users"})) {
  580:             $users = $$resourcetracker{$symb."\0".$part."\0users"};
  581:         }
  582:         if (exists($$resourcetracker{$symb."\0".$part."\0correct"})) {
  583:             $corrects = $$resourcetracker{$symb."\0".$part."\0correct"};
  584:         }
  585:         if ($attempts > 0) {
  586:             $degdiff =  1 - ($corrects/$attempts);
  587:             $degdiff = sprintf("%.2f",$degdiff);
  588:         }
  589:         if ($users > 0) {
  590:             $av_attempts = $attempts/$users;
  591:             $av_attempts = sprintf("%.2f",$av_attempts);
  592:         }
  593:         if ((($degdiff ne '' && $degdiff >= $$threshold{'degdiff'}) || ($av_attempts ne '' && $av_attempts >= $$threshold{'av_attempts'})) && ($users >= $$threshold{'numstudents'})) {
  594:             $stats{$part}{degdiff} = $degdiff;
  595:             $stats{$part}{attempts} = $av_attempts;
  596:             $stats{$part}{users} = $users;
  597:             $lastreset{$part} = $$resourcetracker{$symb."\0".$part."\0resettime"};
  598:             if ($lastreset{$part}) {
  599:                 $lastreset{$part} = &Apache::lonnavmaps::timeToHumanString($lastreset{$part});
  600:             }
  601:             $warning = 1;
  602:         }
  603:     }
  604:     if ($warning) {
  605:         if ($warningnum %2 == 1) {
  606:             $rowColor = $rowColor1;
  607:         } else {
  608:             $rowColor = $rowColor2;
  609:         }
  610:         $$triggered{$symb}{title} = $resource->title;
  611:         foreach my $part (@parts) {
  612:             if (exists($stats{$part}{users})) {
  613:                 my $resetname = 'reset_'.&Apache::lonnet::escape($symb."\0".$part);
  614:                 my $resettitle = 'title_'.&Apache::lonnet::escape($symb."\0".$part);
  615:                 if ($$triggered{$symb}{numparts}) {
  616:                     $$triggered{$symb}{text} .= '<tr bgcolor="'.$rowColor.'">'."\n";
  617:                 }
  618:                 if (@parts > 1) {
  619:                     $$triggered{$symb}{text} .= '
  620:                      <td align="right"><small>part - '.$part.'<small></td>';
  621:                 } else {
  622:                     $$triggered{$symb}{text} .= '
  623:                      <td align="right"><small>single part</small></td>';
  624:                 }
  625:                 $$triggered{$symb}{text} .= '
  626:                      <td align="right"><small>'.$stats{$part}{users}.'</small></td>
  627:                      <td align="right"><small>'.$stats{$part}{attempts}.'</small></td>
  628:                      <td align="right"><small>'.$stats{$part}{degdiff}.'</small></td>
  629:                      <td align="right"><small>'.$lastreset{$part}.'</small></td>
  630:                      <td align="right"><small><input type="checkbox" name="'.$resetname.'" /><input type="hidden" name="'.$resettitle.'" value="'.&Apache::lonnet::escape($$triggered{$symb}{title}).'" /></td>
  631:                     </tr>';
  632:                 $$triggered{$symb}{numparts} ++;
  633:             }
  634:         }
  635:         push(@{$warnings},$symb);
  636:         $warningnum ++;
  637:     }
  638: }
  639: 
  640: 
  641: sub get_curr_thresholds {
  642:     my ($threshold,$cdom,$crs) = @_;
  643:     my %coursesettings = &Apache::lonnet::dump('environment',
  644:                                      $cdom,$crs,'internal.threshold');
  645:     if (exists($coursesettings{'internal.threshold_av_attempts'})) {
  646:         $$threshold{'av_attempts'} = $coursesettings{'internal.threshold_av_attempts'};
  647:     }
  648:     if (exists($coursesettings{'internal.threshold_degdiff'})) {
  649:         $$threshold{'degdiff'} = $coursesettings{'internal.threshold_degdiff'};
  650:     }
  651:     if (exists($coursesettings{'internal.threshold_numstudents'})) {
  652:         $$threshold{'numstudents'} = $coursesettings{'internal.threshold_numstudents'};
  653:     }
  654: }
  655: 
  656: sub process_reset {
  657:     my ($dom,$crs) = @_;
  658:     my $result = '<b>Counters reset for following problems (and parts):</b><br />';
  659:     my @agg_types = ('attempts','users','correct');
  660:     my %agg_titles = (
  661:                      attempts => 'Number of submissions',
  662:                      users => 'Students with submissions',
  663:                      correct => 'Number of correct submissions',
  664:                      );
  665:     my @resets = ();
  666:     my %titles = ();
  667:     foreach my $key (keys(%env)) {
  668:         next if ($key !~ /^form\.reset_(.+)$/);
  669:         my $title = &Apache::lonnet::unescape($env{'form.title_'.$1});
  670:         my $reset_item = &Apache::lonnet::unescape($1);
  671:         my %curr_aggregates = &Apache::lonnet::dump('nohist_resourcetracker',$dom,$crs,$reset_item);
  672:         my %aggregates = ();
  673:         my ($symb,$part) = split(/\0/,$reset_item);
  674:         foreach my $type (@agg_types) {
  675:             $aggregates{$reset_item."\0".$type} = 0;
  676:         }  
  677: 	$aggregates{$reset_item."\0".'resettime'} = time;
  678:         my $putresult = &Apache::lonnet::put('nohist_resourcetracker',\%aggregates,
  679:                           $dom,$crs);
  680:         if ($putresult eq 'ok') {
  681:             $result .= $title.' -part '.$part.': ';
  682:             my %new_aggregates = &Apache::lonnet::dump('nohist_resourcetracker',$dom,$crs,$reset_item);
  683:             foreach my $type (@agg_types) {
  684:                 $result .= $agg_titles{$type}.' = '.$new_aggregates{$reset_item."\0".$type}.'; ';
  685:             }
  686:             $result =~ s/; $//;
  687:             $result .= '<br />';
  688:         } else {
  689:             $result = $title.' -part '.$part.': '.&mt('Unable to reset counters to zero due to [_1]',$putresult).'.<br />'."\n";
  690:         }
  691:     }
  692:     return $result;
  693: }
  694: 
  695: sub process_update {
  696:     my ($dom,$crs,$threshold_titles) = @_;
  697:     my $setoutput = '<b>Changes to threshold(s) for problem tracking:</b><br />';
  698:     foreach (keys %env) {
  699:         next if ($_!~/^form\.(.+)\_setparmval$/);
  700:         my $name  = $1;
  701:         my $value = $env{'form.'.$name.'_value'};
  702:         if ($name && defined($value)) {
  703:             my $put_result = &Apache::lonnet::put('environment',
  704:                                                   {$name=>$value},$dom,$crs);
  705:            
  706:             my ($shortname) = ($name =~ /^internal\.threshold_(.+)$/); 
  707:             if ($put_result eq 'ok') {
  708:                 $setoutput.=&mt('Set threshold for [_1] to [_2]',
  709: 				'<b>'.$$threshold_titles{$shortname}.'</b>',
  710: 				'<b>'.$value.'</b>').'<br />';
  711: 	    } else {
  712:                 $setoutput.=&mt('Unable to set threshold for [_1] to [_2] due to [_3].',
  713: 				'<b>'.$name.'</b>','<b>'.$value.'</b>',
  714: 				'<tt>'.$put_result.'</tt>').'<br />';
  715:             }
  716:         }
  717:     }
  718:     return $setoutput;
  719: }
  720: 
  721: sub getnormalmail {
  722:     my ($newmsgs) = @_;
  723: # Check for unread mail in course
  724:     my $msgcount = 0;
  725: 
  726:     my @messages = sort(&Apache::lonnet::getkeys('nohist_email'));
  727:     foreach my $message (@messages) {
  728: 	my $msgid=&Apache::lonnet::escape($message);
  729:         my ($sendtime,$shortsubj,$fromname,$fromdom,$status,$fromcid)=
  730:             &Apache::lonmsg::unpackmsgid($msgid);
  731:         if (($fromcid) && ($fromcid eq $env{'request.course.id'})) {
  732:             if (defined($sendtime) && $sendtime!~/error/) {
  733:                 my $numsendtime = $sendtime;
  734:                 $sendtime = &Apache::lonlocal::locallocaltime($sendtime);
  735:                 if ($status eq 'new') {
  736:                     $msgcount ++;
  737:                     if ($shortsubj eq '') {
  738:                         $shortsubj = &mt('No subject');
  739:                     }
  740:                     $shortsubj = &Apache::lonnet::unescape($shortsubj);
  741:                     push(@{$newmsgs}, {
  742:                         msgid    => $msgid,
  743:                         sendtime => $sendtime,
  744:                         shortsub => $shortsubj,
  745:                         from     => $fromname,
  746:                         fromdom  => $fromdom
  747:                         });
  748:                 }
  749:             }
  750:         }
  751:     }
  752:     return $msgcount;
  753: }
  754: 
  755: sub getcritmail {
  756:     my ($critmsgs) = @_; 
  757: # Check for critical messages in course
  758:     my %what=&Apache::lonnet::dump('critical');
  759:     my $result = '';
  760:     my $critmsgcount = 0;
  761:     foreach my $msgid (sort(keys(%what))) {
  762:         my ($sendtime,$shortsubj,$fromname,$fromdom,$status,$fromcid)=
  763:             &Apache::lonmsg::unpackmsgid($msgid);
  764:         if (($fromcid) && ($fromcid eq  $env{'request.course.id'})) {
  765:             if (defined($sendtime) && $sendtime!~/error/) {
  766:                 my $numsendtime = $sendtime;
  767:                 $sendtime = &Apache::lonlocal::locallocaltime($sendtime);
  768:                 $critmsgcount ++;
  769:                 if ($shortsubj eq '') {
  770:                     $shortsubj = &mt('No subject');
  771:                 }
  772:                 $shortsubj = &Apache::lonnet::unescape($shortsubj);
  773:                 push(@{$critmsgs}, {
  774:                         msgid    => $msgid,
  775:                         sendtime => $sendtime,
  776:                         shortsub => $shortsubj,
  777:                         from     => $fromname,
  778:                         fromdom  => $fromdom
  779:                         });
  780:             }
  781:         }
  782:     }
  783:     return $critmsgcount;
  784: }
  785: 
  786: 
  787: sub checkversions {
  788:     my ($cdom,$crs,$navmap,$changed,$starttime) = @_;
  789:     my %changes=&Apache::lonnet::dump('versionupdate',$cdom,$crs);
  790:     my ($tmp) = keys(%changes);
  791:     if ($tmp =~/^error\:/) {
  792:         &Apache::lonnet::logthis('Error retrieving version update information: '.
  793:         $tmp.' for '.$cdom.'_'.$crs.' in whatsnew');
  794:     } else {
  795:         if (keys(%changes) > 0) {
  796:             foreach my $key (sort(keys(%changes))) {
  797:                 if ($changes{$key} > $starttime) {
  798:                     my $version;
  799:                     my ($root,$extension)=($key=~/^(.*)\.(\w+)$/);
  800:                     my $currentversion=&Apache::lonnet::getversion($key);
  801:                     my $revdate = 
  802:                           &Apache::lonnet::metadata($root.'.'.$extension,
  803:                                                      'lastrevisiondate');
  804:                     $revdate =  &Apache::lonlocal::locallocaltime($revdate);
  805:                     my $linkurl=&Apache::lonnet::clutter($key);
  806:                     my $usedversion=$navmap->usedVersion('version_'.$linkurl);
  807:                     my @resources = $navmap->getResourceByUrl($linkurl,1);
  808:                     if (($usedversion) && ($usedversion ne 'mostrecent')) {
  809:                         $version = $usedversion;     
  810:                     } else {
  811:                         $version = $currentversion;
  812:                     }
  813:                     foreach my $res (@resources) {
  814:                          if (ref($res) eq 'Apache::lonnavmaps::resource') { 
  815:                             my $symb = $res->symb();
  816:                             %{$$changed{$symb}} = (
  817:                                                 current => $currentversion,
  818:                                                 version => $version,
  819:                                                 revdate => $revdate,
  820:                             );
  821:                         }
  822:                     }
  823:                 }
  824:             }
  825:         }
  826:     }
  827:     return;
  828: }
  829: 
  830: sub display_handgrade {
  831:     my ($r,$tograde,$rowColor1,$rowColor2,$ungraded) = @_;
  832:     my $rowColor;
  833:     my %lt = &Apache::lonlocal::texthash(
  834:                         'prna' => 'Problem Name',
  835:                         'nmun' => 'Number ungraded',
  836:                         'nopr' => 'No problems require handgrading',
  837:     );
  838:     if (@{$tograde} > 0) {
  839:         $r->print('<tr bgcolor="#cccccc"><td><b><small>'.$lt{'prna'}.'</small></b></td><td align="right"><b><small>'.$lt{'nmun'}.'</small></b></td></tr>');
  840:         my $rowNum = 0;
  841:         foreach my $res (@{$tograde}) {
  842:             if ($rowNum %2 == 1) {
  843:                 $rowColor = $rowColor1;
  844:             } else {
  845:                 $rowColor = $rowColor2;
  846:             }
  847:             my ($map,$id,$url)=&Apache::lonnet::decode_symb($res);
  848:             my $linkurl=&Apache::lonnet::clutter($url);
  849:             $linkurl .= '?symb='.&Apache::lonnet::escape($res);
  850:                                                                                
  851:             $r->print('<tr bgcolor="'.$rowColor.'"><td><a href="'.$linkurl.'"><small>'.$$ungraded{$res}{title}.'</small></a></td><td align="right"><small>'.$$ungraded{$res}{count}.'</small></td></tr>');
  852:             $rowNum ++;
  853:         }
  854:     } else {
  855:         $r->print('<tr><td bgcolor="#ffffff"><br><center><i><b><small>&nbsp;&nbsp;'.$lt{'nopr'}.'&nbsp;&nbsp;</small><br><br></b></i></td></tr>');
  856:     }
  857: }
  858: 
  859: sub display_haserrors {
  860:     my ($r,$bombs,$rowColor1,$rowColor2,$bombed,$res_title) = @_;
  861:     my $bombnum = 0;
  862:     my $rowColor;
  863:     my %lt = &Apache::lonlocal::texthash(
  864:                                    reso => 'Resource',
  865:                                    nmer => 'Number of errors',
  866:                                    noer => 'No problems with errors',
  867:     );
  868:     if (@{$bombs} > 0) {
  869:         $r->print('<tr bgcolor="#cccccc"><td><b><small>'.$lt{'reso'}.'</small></b></td><td align="right"><b><small>'.$lt{'nmer'}.'</small></b></td></tr>');
  870:         @{$bombs} = sort { &cmp_title($a,$b,$res_title) } @{$bombs};
  871:         foreach my $bomb (@{$bombs}) {
  872:             if ($bombnum %2 == 1) {
  873:                 $rowColor = $rowColor1;
  874:             } else {
  875:                 $rowColor = $rowColor2;
  876:             }
  877:             $r->print('<tr bgcolor="'.$rowColor.'"><td><small>'.$$bombed{$bomb}{errorlink}.'</small></td><td align="right"><small>'.$$bombed{$bomb}{errorcount}.'</small></td></tr>');
  878:             $bombnum ++;
  879:         }
  880:     } else {
  881:         $r->print('<tr><td bgcolor="#ffffff"><br /><center><b><i><small>'.$lt{'noer'}.'</small></i></b></center><br /></td></tr>');
  882:     }
  883:     return;
  884: }
  885: 
  886: sub display_abovethreshold {
  887:     my ($r,$warnings,$triggered,$res_title,$rowColor1,$rowColor2) = @_;
  888:     my %lt = &Apache::lonlocal::texthash(
  889:                  reso => 'Resource',
  890:                  part => 'Part',
  891:                  nust => 'Num. students',
  892:                  avat => 'Av. Attempts',
  893:                  dedi => 'Deg. Diff',
  894:                  lare => 'Last Reset',
  895:                  reco => 'Reset Count?',
  896:                  rese => 'Reset counters to 0',
  897:                  nopr => 'No problems satisfy threshold criteria',
  898:     );
  899:     my $rowColor; 
  900:     my $warningnum = 0;
  901:     if (@{$warnings} > 0) {
  902:         @{$warnings} = sort { &cmp_title($a,$b,$res_title) } @{$warnings};
  903:         $r->print('<form name="reset_tracking" method="post">'.
  904:                 '  <input type="hidden" name="action" value="reset" />'."\n");
  905:         $r->print('<tr bgcolor="#cccccc"><td><b><small>'.$lt{'reso'}.'</small></b></td><td align="right"><b><small>'.$lt{'part'}.'</small></b></td><td align="right"><b><small>'.$lt{'nust'}.'</small></b></td><td align="right"><b><small>'.$lt{'avat'}.'</small></b></td><td align="right"><b><small>'.$lt{'dedi'}.'</small></b></td><td align="right"><b><small>'.$lt{'lare'}.'</small></b></td><td align="right"><b><small>'.$lt{'reco'}.'</small></b></td></tr>');
  906:         foreach my $res (@{$warnings}) {
  907:             if ($warningnum %2 == 1) {
  908:                 $rowColor = $rowColor1;
  909:             } else {
  910:                 $rowColor = $rowColor2;
  911:             }
  912:             my ($map,$id,$url)=&Apache::lonnet::decode_symb($res);
  913:             my $linkurl=&Apache::lonnet::clutter($url);
  914:             my $rowspan;
  915:             if ($$triggered{$res}{numparts} > 1) {
  916:                 $rowspan = 'rowspan="'.$$triggered{$res}{numparts}.'"';
  917:             }
  918:             $linkurl .= '?symb='.&Apache::lonnet::escape($res);
  919:             $r->print('<tr bgcolor="'.$rowColor.'"><td '.$rowspan.'><a href="'.$linkurl.'"><small>'.$$triggered{$res}{title}.'</small></a></td>'.$$triggered{$res}{text});
  920:             $warningnum ++;
  921:         }
  922:         $r->print('<tr bgcolor="#cccccc"><td colspan="7" align="right"><br /><b><small><input type="submit" name="counters" value="'.$lt{'rese'}.'" /></form>');
  923:     } else {
  924:         $r->print('<tr><td bgcolor="#ffffff"><br /><center><b><i><small>'.$lt{'nopr'}.'</small></i></b></center><br /></td></tr>');
  925:     }
  926: }
  927: 
  928: sub display_versionchanges {
  929:     my ($r,$changed,$res_title,$rowColor1,$rowColor2,$interval) = @_;
  930:     my %lt = &Apache::lonlocal::texthash(
  931:         'reso' => 'Resource',
  932:         'revd' => 'Last revised',
  933:         'newv' => 'New version',
  934:         'veru' => 'Version used',
  935:         'noup' => 'No updated versions', 
  936:     );
  937:     my $rowColor;
  938:     if (keys(%{$changed}) > 0) {
  939:         $r->print('<tr bgcolor="#cccccc"><td><b><small>'.$lt{'reso'}.'</small></b></td><td><b><small>'.$lt{'revd'}.'</small></b></td><td><b><small>'.$lt{'newv'}.'</small></b></td><td><b><small>'.$lt{'veru'}.'</small></b></td></tr>');
  940:         
  941:         
  942:         my @changes = sort { &cmp_title($a,$b,$res_title) } keys(%{$changed});
  943:         my $changenum = 0;
  944:         foreach my $item (@changes) {
  945:             if ($changenum %2 == 1) {
  946:                 $rowColor = $rowColor1;
  947:             } else {
  948:                 $rowColor = $rowColor2;
  949:             }
  950:             my ($map,$id,$url)=&Apache::lonnet::decode_symb($item);
  951:             my $linkurl=&Apache::lonnet::clutter($url);
  952:             $linkurl .= '?symb='.&Apache::lonnet::escape($item);
  953: 
  954:             $r->print('<tr bgcolor="'.$rowColor.'"><td><small><a href="'.$linkurl.'">'.$$res_title{$item}.'</a></small></td><td><small>'.$$changed{$item}{'revdate'}.'</small></td><td><small>'.$$changed{$item}{'current'}.'</small></td><td><small>'.$$changed{$item}{'version'}.'</small></td></tr>');
  955:             $changenum ++;
  956:         }
  957:     } else {
  958:         $r->print('<tr><td bgcolor="#ffffff"><br /><center><b><i><small>'.$lt{'noup'}.' '.$interval.'</small></i></b></center><br /></td></tr>');
  959:     }
  960:     return;
  961: }
  962:  
  963: sub display_coursediscussion {
  964:     my ($r,$newdiscussions,$unread,$res_title,$rowColor1,$rowColor2) = @_;
  965:     my %lt = &Apache::lonlocal::texthash(
  966:                 'loca' => 'Location',
  967:                 'type' => 'Type',
  968:                 'numn' => 'Number of new posts',
  969:                 'noun' => 'No unread posts in course discussions',
  970:     );
  971:     my $rowColor;
  972:     if (@{$newdiscussions} > 0) {
  973:         $r->print('<tr bgcolor="#cccccc"><td><b><small>'.$lt{'loca'}.
  974:                   '</small></b></td><td><b><small>'.$lt{'type'}.
  975:                   '</small></b><td align="right"><b><small>'.$lt{'numn'}.
  976:                   '</small></b></td></tr>');
  977:         @{$newdiscussions} = sort { &cmp_title($a,$b,$res_title) }
  978:                                                             @{$newdiscussions};
  979:         my $rowNum = 0;
  980:         foreach my $ressymb (@{$newdiscussions}) {
  981:             my $forum_title = $$unread{$ressymb}{'title'};
  982:             my $type = 'Resource';
  983:             my $feedurl=&Apache::lonfeedback::get_feedurl($ressymb);
  984:             if ($feedurl =~ /bulletinboard/) {
  985:                 $type = 'Bulletin Board';
  986:             }
  987:             my $unreadnum = keys(%{$$unread{$ressymb}});
  988:             $unreadnum = $unreadnum - 2;
  989:             if ($unreadnum > 0) {
  990:                 if ($rowNum %2 == 1) {
  991:                     $rowColor = $rowColor1;
  992:                 } else {
  993:                     $rowColor = $rowColor2;
  994:                 }
  995:                 $r->print('<tr bgcolor="'.$rowColor.'"><td><small><a href="'.$feedurl.'?symb='.$$unread{$ressymb}{symb}.'">'.$forum_title.'</a>&nbsp;</td><td><small>'.$type.'</small></td><td align="right">'.$unreadnum.'&nbsp;</td></tr>');
  996:                 $rowNum ++;
  997:             }
  998:         }
  999:     } else {
 1000:         $r->print('<tr><td bgcolor="#ffffff"><br><center>&nbsp;<i><b><small>'.
 1001:                   $lt{'noun'}.'</small></b></i><br><br></td></tr>');
 1002:     }
 1003: }
 1004: 
 1005: sub display_coursenormalmail {
 1006:     my ($r,$msgcount,$newmsgs,$rowColor1,$rowColor2) = @_;
 1007:     my $rowColor;
 1008:     if ($msgcount > 0) {
 1009:         $r->print('<tr bgcolor="#cccccc"><td><b><small>'.&mt('Number').'</small></b></td><td><b><small>'.&mt('Subject').'</small></b></td><td><b><small>'.&mt('Sender').'</small></b></td><td><b><small>'.&mt('Date/Time').'</small></b></td></tr>');
 1010:         my $rowNum = 0;
 1011:         my $mailcount = 1;
 1012:         foreach my $msg (@{$newmsgs}) {
 1013:             if ($rowNum %2 == 1) {
 1014:                 $rowColor = $rowColor1;
 1015:             } else {
 1016:                 $rowColor = $rowColor2;
 1017:             }
 1018:             $r->print('<tr bgcolor="'.$rowColor.'"><td valign="top"><small>'.$mailcount.'. &nbsp;</small></td><td valign="top"><small><a href="/adm/communicate">'.$msg->{'shortsub'}.'</a>&nbsp; &nbsp;</small></td><td valign="top"><small>&nbsp;'.$msg->{'from'}.'@'.$msg->{'fromdom'}.'&nbsp;</small></td><td valign="top"><small>'.$msg->{'sendtime'}.'</small></td></tr>');
 1019:             $rowNum ++;
 1020:             $mailcount ++;
 1021:         }
 1022:     } else {
 1023:         $r->print('<tr><td bgcolor="#ffffff" width="100%"><center><br /><b><i><small>'.&mt('No new course messages').'</small></i></b><br /><br /></center></td></tr>');
 1024:     }
 1025: }
 1026: 
 1027: sub display_coursecritmail {
 1028:     my ($r,$critmsgcount,$critmsgs,$rowColor1,$rowColor2) = @_;
 1029:     my $rowColor;
 1030:     if ($critmsgcount > 0) {
 1031:         $r->print('<tr bgcolor="#cccccc"><td><b><small>'.&mt('Number').'</small></b></td><td><b><small>'.&mt('Subject').'</small></b></td><td><b><small>'.&mt('Sender').'</small></b></td><td><b><small>'.&mt('Date/Time').'</small></b></td></tr>');
 1032:         my $rowNum = 0;
 1033:         my $mailcount = 1;
 1034:         foreach my $msg (@{$critmsgs}) {
 1035:             if ($rowNum %2 == 1) {
 1036:                 $rowColor = $rowColor1;
 1037:             } else {
 1038:                 $rowColor = $rowColor2;
 1039:             }
 1040:             $r->print('<tr bgcolor="'.$rowColor.'"><td valign="top"><small>'.$mailcount.'. &nbsp;<small></td><td valign="top"><small><a href="/adm/email?folder=critical">'.$msg->{'shortsub'}.'</a>&nbsp; &nbsp;</small></td><td valign="top"><small>&nbsp;'.$msg->{'from'}.'@'.$msg->{'fromdom'}.'&nbsp;</small></td><td valign="top"><small>'.$msg->{'sendtime'}.'</small></td></tr>');
 1041:             $rowNum ++;
 1042:             $mailcount ++;
 1043:         }
 1044:     } else {
 1045:         $r->print('<tr><td bgcolor="#ffffff" width="100%"><center><br /><b><i><small>'.&mt('No unread critical messages in course').'</small></i></b><br /><br /></center></td></tr>');
 1046:     }
 1047: }
 1048: 
 1049: sub cmp_title {
 1050:     my ($a,$b,$res_title) = @_;
 1051:     my ($atitle,$btitle) = (lc($$res_title{$a}),lc($$res_title{$b}));
 1052:     $atitle=~s/^\s*//;
 1053:     $btitle=~s/^\s*//;
 1054:     return $atitle cmp $btitle;
 1055: }
 1056: 
 1057: sub get_display_settings {
 1058:     my $udom = $env{'user.domain'};
 1059:     my $uname = $env{'user.name'};
 1060:     my $cid = $env{'request.course.id'};
 1061:     my %settings = &Apache::lonnet::dump('nohist_whatsnew',$udom,$uname,$cid); 
 1062:     my ($tmp) = keys(%settings);
 1063:     if ($tmp=~/^error:/) {
 1064:         %settings = ();
 1065:         unless ($tmp eq 'error: 2 tie(GDBM) Failed while attempting dump') {
 1066:             &logthis('Error retrieving whatsnew settings: '.$tmp.' for '.
 1067:                                 $uname.':'.$udom.' for course: '.$cid);
 1068:         }
 1069:     }
 1070:     return %settings;
 1071: }
 1072: 
 1073: sub start_box {
 1074:     my ($r,$tabbg,$show,$heading,$caller) = @_;
 1075:     my %lt = &Apache::lonlocal::texthash( 
 1076:                        chth => 'Change thresholds?',
 1077:                        chin => 'Change interval?',
 1078:     );
 1079:     my $showhide;
 1080:     if ($$show{$caller}) {
 1081:         $showhide = '<b><a href="javascript:change_display('."'".$caller.
 1082:                                            "','hide'".');">Hide</a></b>';
 1083:    
 1084:     } else {
 1085:         $showhide = '<b><a href="javascript:change_display('."'".$caller.
 1086:                                             "','show'".');">Show</a></b>';
 1087:     }
 1088:     
 1089:     $r->print('
 1090:          <table border="0" cellpadding="0" cellspacing="0" bgcolor="#000000" width="100%">
 1091:           <tr>
 1092:            <td>
 1093:             <table border="0" cellpadding="1" cellspacing="1" bgcolor="#000000" width="100%">
 1094:               <tr>
 1095:                <td bgcolor="'.$tabbg.'">
 1096:                 <table width="100%" border="0" cellspacing="0" cellpadding="0">
 1097:                  <tr>
 1098:                   <td><b>'.$$heading{$caller}.'</b></td>
 1099:                   <td valign="top" align="right">'.$showhide.'</td>
 1100:                  </tr>
 1101:                 </table>
 1102:                </td>
 1103:               </tr>');
 1104:      if (($caller eq 'abovethreshold') && ($$show{$caller})) {
 1105:          $r->print('
 1106:               <tr>
 1107:                 <td bgcolor="'.$tabbg.'" align="right"><a href="/adm/whatsnew?command=chgthreshold"><b><small>'.$lt{'chth'}.'</small></b></a></td>
 1108:               </tr>');
 1109:      } elsif (($caller eq 'versionchanges') && ($$show{$caller})) {
 1110:          $r->print('
 1111:               <tr>
 1112:                 <td bgcolor="'.$tabbg.'" align="right"><a href="/adm/whatsnew?command=chginterval"><b><small>'.$lt{'chin'}.'</small></b></a></td>
 1113:               </tr>');
 1114:      }
 1115:      $r->print('
 1116:               <tr>
 1117:                <td bgcolor="#ffffff">
 1118:                 <table cellpadding="2" cellspacing="0" border="0" width="100%">
 1119: ');
 1120:     return;
 1121: }
 1122: 
 1123: sub end_box {
 1124:     my ($r) = shift;
 1125:     $r->print('
 1126:       </table>
 1127:      </td>
 1128:     </tr>
 1129:    </table>
 1130:   </td>
 1131:  </tr>
 1132: </table><br />');
 1133:     return;
 1134: }
 1135: 
 1136: 1;

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