Annotation of loncom/interface/lonstatistics.pm, revision 1.142

1.1       albertel    1: # The LearningOnline Network with CAPA
                      2: #
1.142   ! bisitz      3: # $Id: lonstatistics.pm,v 1.141 2008/09/16 15:40:15 bisitz Exp $
1.1       albertel    4: #
                      5: # Copyright Michigan State University Board of Trustees
                      6: #
                      7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      8: #
                      9: # LON-CAPA is free software; you can redistribute it and/or modify
                     10: # it under the terms of the GNU General Public License as published by
                     11: # the Free Software Foundation; either version 2 of the License, or
                     12: # (at your option) any later version.
                     13: #
                     14: # LON-CAPA is distributed in the hope that it will be useful,
                     15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     17: # GNU General Public License for more details.
                     18: #
                     19: # You should have received a copy of the GNU General Public License
                     20: # along with LON-CAPA; if not, write to the Free Software
                     21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     22: #
                     23: # /home/httpd/html/adm/gpl.txt
                     24: #
                     25: # http://www.lon-capa.org/
                     26: #
                     27: # (Navigate problems for statistical reports
1.14      minaeibi   28: #
1.1       albertel   29: ###
                     30: 
1.59      matthew    31: =pod
                     32: 
                     33: =head1 NAME
                     34: 
                     35: lonstatistics
                     36: 
                     37: =head1 SYNOPSIS
                     38: 
                     39: Main handler for statistics and chart.
                     40: 
                     41: =over 4
                     42: 
                     43: =cut
                     44: 
1.55      minaeibi   45: package Apache::lonstatistics;
1.1       albertel   46: 
1.30      stredwic   47: use strict;
1.1       albertel   48: use Apache::Constants qw(:common :http);
1.61      matthew    49: use vars qw(
                     50:     @FullClasslist 
                     51:     @Students
1.130     raeburn    52:     @Sections
                     53:     @Groups 
1.61      matthew    54:     %StudentData
                     55:     @StudentDataOrder
                     56:     @SelectedStudentData
1.94      matthew    57:     $enrollment_status);
1.61      matthew    58: 
1.123     albertel   59: use Apache::lonnet;
1.1       albertel   60: use Apache::lonhomework;
1.12      minaeibi   61: use Apache::loncommon;
1.29      stredwic   62: use Apache::loncoursedata;
                     63: use Apache::lonhtmlcommon;
1.97      matthew    64: use Apache::lonmysql;
                     65: use Apache::lonlocal;
1.135     raeburn    66: use Apache::longroup;
1.97      matthew    67: use Time::HiRes;
                     68: #
                     69: # Statistics Packages
1.61      matthew    70: use Apache::lonproblemanalysis();
1.89      matthew    71: use Apache::lonsubmissiontimeanalysis();
1.94      matthew    72: use Apache::loncorrectproblemplot();
1.61      matthew    73: use Apache::lonproblemstatistics();
                     74: use Apache::lonstudentassessment();
1.49      stredwic   75: use Apache::lonpercentage;
1.97      matthew    76: use Apache::lonstudentsubmissions();
1.104     matthew    77: use Apache::lonsurveyreports();
1.128     albertel   78: use Apache::longradinganalysis();
1.136     www        79: use LONCAPA;
1.60      matthew    80: 
                     81: #######################################################
                     82: #######################################################
                     83: 
                     84: =pod
                     85: 
                     86: =item Package Variables
                     87: 
                     88: =item @FullClasslist The full classlist
                     89: 
                     90: =item @Students The students we are concerned with for this invocation
                     91: 
                     92: =item @Sections The sections available in this class
                     93: 
1.130     raeburn    94: =item @Groups The groups available in the class
                     95: 
1.60      matthew    96: =item $curr_student The student currently being examined
                     97: 
                     98: =item $prev_student The student previous in the classlist
                     99: 
                    100: =item $next_student The student next in the classlist
                    101: 
                    102: =over
                    103: 
                    104: =cut 
                    105: 
                    106: #######################################################
                    107: #######################################################
                    108: #
                    109: # Classlist variables
                    110: #
1.59      matthew   111: my $curr_student;
                    112: my $prev_student;
                    113: my $next_student;
                    114: 
                    115: #######################################################
                    116: #######################################################
                    117: 
                    118: =pod
                    119: 
                    120: =item &clear_classlist_variables()
                    121: 
                    122: undef the following package variables:
                    123: 
                    124: =over
                    125: 
1.60      matthew   126: =item @FullClasslist
                    127: 
                    128: =item @Students
1.59      matthew   129: 
1.60      matthew   130: =item @Sections
1.59      matthew   131: 
1.130     raeburn   132: =item @Groups
                    133: 
1.61      matthew   134: =item %StudentData
                    135: 
                    136: =item @StudentDataOrder
                    137: 
                    138: =item @SelectedStudentData
                    139: 
1.60      matthew   140: =item $curr_student
1.59      matthew   141: 
1.60      matthew   142: =item $prev_student
1.59      matthew   143: 
1.60      matthew   144: =item $next_student
1.59      matthew   145: 
                    146: =back
                    147: 
                    148: =cut
                    149: 
                    150: #######################################################
                    151: #######################################################
                    152: sub clear_classlist_variables {
                    153:     undef(@FullClasslist);
                    154:     undef(@Students);
                    155:     undef(@Sections);
1.130     raeburn   156:     undef(@Groups);
1.61      matthew   157:     undef(%StudentData);
                    158:     undef(@SelectedStudentData);
1.59      matthew   159:     undef($curr_student);
                    160:     undef($prev_student);
                    161:     undef($next_student);
                    162: }
                    163: 
                    164: #######################################################
                    165: #######################################################
                    166: 
                    167: =pod
                    168: 
                    169: =item &PrepareClasslist()
                    170: 
                    171: Build up the classlist information.  The classlist information is kept in
                    172: the following package variables:
                    173: 
                    174: =over
                    175: 
1.60      matthew   176: =item @FullClasslist
                    177: 
                    178: =item @Students
1.59      matthew   179: 
1.60      matthew   180: =item @Sections
1.59      matthew   181: 
1.130     raeburn   182: =item @Groups 
                    183: 
1.61      matthew   184: =item %StudentData
                    185: 
                    186: =item @SelectedStudentData
                    187: 
1.60      matthew   188: =item $curr_student
1.59      matthew   189: 
1.60      matthew   190: =item $prev_student
1.59      matthew   191: 
1.60      matthew   192: =item $next_student
1.59      matthew   193: 
                    194: =back
                    195: 
                    196: $curr_student, $prev_student, and $next_student may not be defined, depending
                    197: upon the calling context.
                    198: 
                    199: =cut
                    200: 
                    201: #######################################################
                    202: #######################################################
                    203: sub PrepareClasslist {
                    204:     my %Sections;
                    205:     &clear_classlist_variables();
                    206:     #
                    207:     # Retrieve the classlist
1.123     albertel  208:     my $cid  = $env{'request.course.id'};
                    209:     my $cdom = $env{'course.'.$cid.'.domain'};
                    210:     my $cnum = $env{'course.'.$cid.'.num'};
1.125     albertel  211:     my ($classlist,$field_names) = &Apache::loncoursedata::get_classlist($cdom,
                    212: 									$cnum);
1.119     matthew   213:     my @selected_sections = &get_selected_sections();
1.130     raeburn   214:     my @selected_groups = &get_selected_groups();
1.61      matthew   215:     #
1.69      matthew   216:     # Deal with instructors with restricted section access
1.123     albertel  217:     if ($env{'request.course.sec'} !~ /^\s*$/) {
                    218:         @selected_sections = ($env{'request.course.sec'});
1.69      matthew   219:     }
                    220:     #
1.61      matthew   221:     # Set up %StudentData
1.130     raeburn   222:     @StudentDataOrder = qw/fullname username domain id section status groups comments/;
1.61      matthew   223:     foreach my $field (@StudentDataOrder) {
1.108     matthew   224:         $StudentData{$field}->{'title'} = &mt($field);
                    225:         $StudentData{$field}->{'base_width'} = length(&mt($field));
1.61      matthew   226:         $StudentData{$field}->{'width'} = 
                    227:                                $StudentData{$field}->{'base_width'};
                    228:     }
1.59      matthew   229:     #
1.68      matthew   230:     # get the status requested
1.94      matthew   231:     $enrollment_status = 'Active';
1.123     albertel  232:     $enrollment_status = $env{'form.Status'} if (exists($env{'form.Status'}));
1.68      matthew   233:     #
1.130     raeburn   234:     # Get groupmembership
1.133     albertel  235:     my ($classgroups,$studentgroups);
1.135     raeburn   236:     my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
1.133     albertel  237:     if (%curr_groups) {
1.130     raeburn   238:         ($classgroups,$studentgroups) = 
1.133     albertel  239: 	    &Apache::loncoursedata::get_group_memberships($classlist,
1.134     raeburn   240:                                                           $field_names,
1.133     albertel  241: 							  $cdom,$cnum);
1.130     raeburn   242:     }
                    243:     my $now = time;
                    244: 
1.59      matthew   245:     # Process the classlist
                    246:     while (my ($student,$student_data) = each (%$classlist)) {
                    247:         my $studenthash = ();
                    248:         for (my $i=0; $i< scalar(@$field_names);$i++) {
1.61      matthew   249:             my $field = $field_names->[$i];
                    250:             # Store the data
                    251:             $studenthash->{$field}=$student_data->[$i];
                    252:             # Keep track of the width of the fields
                    253:             next if (! exists($StudentData{$field}));
1.63      matthew   254:             my $length = length($student_data->[$i]);
1.61      matthew   255:             if ($StudentData{$field}->{'width'} < $length) {
                    256:                 $StudentData{$field}->{'width'} = $length; 
                    257:             }
1.59      matthew   258:         }
1.130     raeburn   259:         my @studentsgroups = &Apache::loncoursedata::get_students_groups
                    260:                                                    ($student,$enrollment_status,
                    261:                                                     $classgroups);
                    262:         if (@studentsgroups) {
                    263:             $studenthash->{'groups'} = join(', ',@studentsgroups);
                    264:             $studenthash->{'groupref'} = \@studentsgroups;
                    265:         } else {
                    266:             $studenthash->{'groups'} = 'none';
                    267:             $studenthash->{'groupref'} = []; 
                    268:         }
1.59      matthew   269:         push (@FullClasslist,$studenthash);
                    270:         #
                    271:         # Build up a list of sections
                    272:         my $section = $studenthash->{'section'};
1.60      matthew   273:         if (! defined($section) || $section =~/^\s*$/ || $section == -1) {
                    274:             $studenthash->{'section'} = 'none';
                    275:             $section = $studenthash->{'section'};
                    276:         }
1.59      matthew   277:         $Sections{$section}++;
                    278:         #
                    279:         # Only put in the list those students we are interested in
1.119     matthew   280:         foreach my $sect (@selected_sections) {
1.68      matthew   281:             if ( (($sect eq 'all') || 
                    282:                   ($section eq $sect)) &&
1.94      matthew   283:                  (($studenthash->{'status'} eq $enrollment_status) || 
                    284:                   ($enrollment_status eq 'Any')) 
1.68      matthew   285:                  ){
1.130     raeburn   286:                 my $groupcheck = 0;
1.131     albertel  287:                 if (grep(/^all$/,@selected_groups)) {
                    288:                     push(@Students,$studenthash);
1.130     raeburn   289:                     last;
1.131     albertel  290:                 } elsif (grep(/^none$/,@selected_groups)) {
1.130     raeburn   291:                     if ($studenthash->{'groups'} eq 'none') {
1.131     albertel  292:                         push(@Students,$studenthash);
1.130     raeburn   293:                         last;
                    294:                     }     
                    295:                 } else {
                    296:                     foreach my $group (@selected_groups) {
1.131     albertel  297:                         if (grep(/^$group$/,@studentsgroups)) {
                    298:                             push(@Students,$studenthash);
1.130     raeburn   299:                             $groupcheck = 1;
                    300:                             last;
                    301:                         }
                    302:                     }
                    303:                     if ($groupcheck) {
                    304:                         last;
                    305:                     }
                    306:                 }
1.60      matthew   307:             }
1.59      matthew   308:         }
                    309:     }
                    310:     #
                    311:     # Put the consolidated section data in the right place
1.123     albertel  312:     if ($env{'request.course.sec'} !~ /^\s*$/) {
                    313:         @Sections = ($env{'request.course.sec'});
1.69      matthew   314:     } else {
1.138     albertel  315:         @Sections = sort {
                    316: 	    if ($a == $a && $b == $b ) { return $a <=> $b; }
                    317: 	    return $a cmp $b;
                    318: 	} keys(%Sections);
                    319: 
1.69      matthew   320:         unshift(@Sections,'all'); # Put 'all' at the front of the list
                    321:     }
1.130     raeburn   322:     # Sort the groups
                    323:     @Groups = sort {$a cmp $b} keys(%{$studentgroups});
                    324:     unshift(@Groups,'all'); # Put 'all' at the front of the list
                    325: 
1.59      matthew   326:     #
                    327:     # Sort the Students
                    328:     my $sortby = 'fullname';
1.123     albertel  329:     $sortby = $env{'form.sort'} if (exists($env{'form.sort'}));
1.127     albertel  330:     my @TmpStudents = sort { lc($a->{$sortby}) cmp lc($b->{$sortby}) ||
1.126     albertel  331:                              lc($a->{'fullname'}) cmp lc($b->{'fullname'}) ||
                    332: 			     lc($a->{'username'}) cmp lc($b->{'username'}) } @Students;
1.60      matthew   333:     @Students = @TmpStudents;
1.59      matthew   334:     # 
                    335:     # Now deal with that current student thing....
1.72      matthew   336:     $curr_student = undef;
1.123     albertel  337:     if (exists($env{'form.SelectedStudent'})) {
1.59      matthew   338:         my ($current_uname,$current_dom) = 
1.123     albertel  339:             split(':',$env{'form.SelectedStudent'});
1.59      matthew   340:         my $i;
                    341:         for ($i = 0; $i<=$#Students; $i++) {
                    342:             next if (($Students[$i]->{'username'} ne $current_uname) || 
                    343:                      ($Students[$i]->{'domain'}   ne $current_dom));
1.60      matthew   344:             $curr_student = $Students[$i];
1.59      matthew   345:             last; # If we get here, we have our student.
                    346:         }
1.72      matthew   347:         if (defined($curr_student)) {
                    348:             if ($i == 0) {
                    349:                 $prev_student = undef;
                    350:             } else {
                    351:                 $prev_student = $Students[$i-1];
                    352:             }
                    353:             if ($i == $#Students) {
                    354:                 $next_student = undef;
                    355:             } else {
                    356:                 $next_student = $Students[$i+1];
                    357:             }
1.59      matthew   358:         }
                    359:     }
1.61      matthew   360:     #
1.123     albertel  361:     if (exists($env{'form.StudentData'})) {
1.124     albertel  362: 	@SelectedStudentData = 
                    363: 	    &Apache::loncommon::get_env_multiple('form.StudentData');
1.61      matthew   364:     } else {
1.72      matthew   365:         @SelectedStudentData = ('username');
1.61      matthew   366:     }
                    367:     foreach (@SelectedStudentData) {
                    368:         if ($_ eq 'all') {
                    369:             @SelectedStudentData = ('all');
                    370:             last;
                    371:         }
                    372:     }
                    373:     #
                    374:     return;
                    375: }
                    376: 
1.119     matthew   377: #######################################################
                    378: #######################################################
                    379: 
                    380: =pod
                    381: 
                    382: =item get_selected_sections
                    383: 
                    384: Returns an array of the selected sections
                    385: 
                    386: =cut
                    387: 
                    388: #######################################################
                    389: #######################################################
                    390: sub get_selected_sections {
1.124     albertel  391:     my @selected_sections = 
                    392: 	&Apache::loncommon::get_env_multiple('form.Section');
1.119     matthew   393:     @selected_sections = ('all') if (! @selected_sections);
                    394:     foreach (@selected_sections) {
                    395:         if ($_ eq 'all') {
                    396:             @selected_sections = ('all');
                    397:         }
                    398:     }
                    399:     #
                    400:     # Deal with instructors with restricted section access
1.123     albertel  401:     if ($env{'request.course.sec'} !~ /^\s*$/) {
                    402:         @selected_sections = ($env{'request.course.sec'});
1.119     matthew   403:     }
                    404:     return @selected_sections;
                    405: }
                    406: 
                    407: #######################################################
                    408: #######################################################
1.130     raeburn   409:                                                                                     
                    410: =pod
                    411:                                                                                     
                    412: =item get_selected_groups
                    413:                                                                                     
                    414: Returns an array of the selected groups
                    415:                                                                                     
                    416: =cut
                    417:                                                                                     
                    418: #######################################################
                    419: #######################################################
                    420: sub get_selected_groups {
                    421:     my @selected_groups =
                    422:         &Apache::loncommon::get_env_multiple('form.Group');
                    423:     @selected_groups = ('all') if (! @selected_groups);
                    424:     foreach my $grp (@selected_groups) {
                    425:         if ($grp eq 'all') {
                    426:             @selected_groups = ('all');
                    427:             last;
                    428:         }
                    429:     }
                    430:     return @selected_groups;
                    431: }
                    432:                                                                                     
1.119     matthew   433: =pod
                    434: 
                    435: =item &section_and_enrollment_description
                    436: 
1.130     raeburn   437: Returns a string describing the currently selected section(s), group(s) and 
1.137     raeburn   438: access status.  
1.122     matthew   439: 
                    440: Inputs: mode = 'plaintext' or 'localized'  (defaults to 'localized')
                    441:     'plaintext' is used for example in Excel spreadsheets.
                    442: Returns: scalar description string.
                    443: 
1.119     matthew   444: =cut
                    445: 
                    446: #######################################################
                    447: #######################################################
                    448: sub section_and_enrollment_description {
1.122     matthew   449:     my ($mode) = @_;
                    450:     if (! defined($mode)) { $mode = 'localized'; }
1.119     matthew   451:     my @sections = &Apache::lonstatistics::get_selected_sections();
1.130     raeburn   452:     my @groups = &Apache::lonstatistics::get_selected_groups();
1.122     matthew   453:     my $description;
                    454:     if ($mode eq 'localized') {
1.137     raeburn   455:         $description = &mt('Unable to determine section, groups and access status');
1.122     matthew   456:     } elsif ($mode eq 'plaintext') {
1.137     raeburn   457:         $description = 'Unable to determine section, groups and access status';
1.122     matthew   458:     } else {
                    459:         $description = 'Bad parameter passed to lonstatistics::section_and_enrollment_description';
                    460:         &Apache::lonnet::logthis($description);
                    461:     }
1.130     raeburn   462:     $description = &section_or_group_text($mode,'section',@sections).
1.131     albertel  463: 	' '.&section_or_group_text($mode,'group',@groups);
1.130     raeburn   464:     if ($mode eq 'localized') {
1.142   ! bisitz    465:         $description .= ' '.&mt($env{'form.Status'}.' access status.');
1.130     raeburn   466:     } elsif ($mode eq 'plaintext') {
1.137     raeburn   467:         $description .= ' '.$env{'form.Status'}.' access status.';
1.130     raeburn   468:     }
                    469:     return $description;
                    470: }
                    471: 
                    472: #######################################################
                    473: #######################################################
                    474: 
                    475: sub section_or_group_text {
                    476:     my ($mode,$type,@items) = @_;
                    477:     my $text;
                    478:     my %phrases = ();
                    479:     %{$phrases{'section'}} = (
                    480:                               single => 'Section',
                    481:                               all => 'All sections',
                    482:                               plural => 'Sections',
                    483:                              );
                    484:     %{$phrases{'group'}} = (
                    485:                               single => 'Group',
                    486:                               all => 'All groups',
                    487:                               plural => 'Groups',
                    488:                              );
                    489:     if (scalar(@items) == 1 && $items[0] ne 'all') {
1.122     matthew   490:         if ($mode eq 'localized') {
1.142   ! bisitz    491:             $text = &mt($phrases{$type}{single}.' [_1].',$items[0]);
1.122     matthew   492:         } elsif ($mode eq 'plaintext') {
1.130     raeburn   493:             $text = $phrases{$type}{single}.' '.$items[0].'.';
                    494: 
1.122     matthew   495:         }
1.130     raeburn   496:     } elsif (scalar(@items) && $items[0] eq 'all') {
1.122     matthew   497:         if ($mode eq 'localized') {
1.142   ! bisitz    498:             $text = &mt($phrases{$type}{all}.'.');
1.122     matthew   499:         } elsif ($mode eq 'plaintext') {
1.130     raeburn   500:             $text = $phrases{$type}{all}.'.';
1.122     matthew   501:         }
1.130     raeburn   502:     } elsif (scalar(@items)) {
                    503:         my $lastitem = pop(@items);
1.122     matthew   504:         if ($mode eq 'localized') {
1.142   ! bisitz    505:             $text = &mt($phrases{$type}{plural}.' [_1] and [_2].',
1.130     raeburn   506:                         join(', ',@items),$lastitem);
1.122     matthew   507:         } elsif ($mode eq 'plaintext') {
1.130     raeburn   508:             $text = $phrases{$type}{plural}.' '.join(', ',@items).' and '.
                    509:                     $lastitem.'.';
1.122     matthew   510:         }
1.119     matthew   511:     }
1.130     raeburn   512:     return $text;
1.119     matthew   513: }
1.71      matthew   514: 
                    515: 
                    516: =pod
                    517: 
                    518: =item get_students
                    519: 
                    520: Returns a list of the selected students
                    521: 
                    522: =cut
                    523: 
                    524: #######################################################
                    525: #######################################################
                    526: sub get_students {
                    527:     if (! @Students) {
                    528:         &PrepareClasslist()
                    529:     }
                    530:     return @Students;
                    531: }
                    532: 
1.61      matthew   533: #######################################################
                    534: #######################################################
                    535: 
                    536: =pod
                    537: 
                    538: =item &current_student()
                    539: 
                    540: Returns a pointer to a hash containing data about the currently
                    541: selected student.
                    542: 
                    543: =cut
                    544: 
                    545: #######################################################
                    546: #######################################################
                    547: sub current_student { 
1.72      matthew   548:     return $curr_student;
1.61      matthew   549: }
                    550: 
                    551: #######################################################
                    552: #######################################################
                    553: 
                    554: =pod
                    555: 
                    556: =item &previous_student()
                    557: 
                    558: Returns a pointer to a hash containing data about the student prior
                    559: in the list of students.  Or something.  
                    560: 
                    561: =cut
                    562: 
                    563: #######################################################
                    564: #######################################################
                    565: sub previous_student { 
1.72      matthew   566:     return $prev_student;
1.59      matthew   567: }
                    568: 
                    569: #######################################################
                    570: #######################################################
1.61      matthew   571: 
                    572: =pod
                    573: 
                    574: =item &next_student()
                    575: 
                    576: Returns a pointer to a hash containing data about the next student
                    577: to be viewed.
                    578: 
                    579: =cut
                    580: 
                    581: #######################################################
                    582: #######################################################
                    583: sub next_student { 
1.72      matthew   584:     return $next_student;
1.61      matthew   585: }
1.60      matthew   586: 
1.61      matthew   587: ##############################################
                    588: ##############################################
                    589: 
                    590: =pod 
                    591: 
                    592: =item &StudentDataSelect($elementname,$status,$numvisible,$selected)
                    593: 
                    594: Returns html for a selection box allowing the user to choose one (or more) 
                    595: of the fields of student data available (fullname, username, id, section, etc)
                    596: 
                    597: =over 4
                    598: 
                    599: =item $elementname The name of the HTML form element
                    600: 
                    601: =item $status 'multiple' or 'single' selection box
                    602: 
                    603: =item $numvisible The number of options to be visible
                    604: 
                    605: =back
1.60      matthew   606: 
                    607: =cut
                    608: 
1.61      matthew   609: ##############################################
                    610: ##############################################
                    611: sub StudentDataSelect {
                    612:     my ($elementname,$status,$numvisible)=@_;
                    613:     if ($numvisible < 1) {
                    614:         return;
                    615:     }
                    616:     #
                    617:     # Build the form element
                    618:     my $Str = "\n";
                    619:     $Str .= '<select name="'.$elementname.'" ';
                    620:     if ($status ne 'single') {
                    621:         $Str .= 'multiple="true" ';
                    622:     }
                    623:     $Str .= 'size="'.$numvisible.'" >'."\n";
                    624:     #
                    625:     # Deal with 'all'
                    626:     $Str .= '    <option value="all" ';
                    627:     foreach (@SelectedStudentData) {
                    628:         if ($_ eq 'all') {
                    629:             $Str .= 'selected ';
                    630:             last;
                    631:         }
                    632:     }
                    633:     $Str .= ">all</option>\n";
                    634:     #
                    635:     # Loop through the student data fields
                    636:     foreach my $item (@StudentDataOrder) {
                    637:         $Str .= '    <option value="'.$item.'" ';
                    638:         foreach (@SelectedStudentData) {
                    639:             if ($item eq $_ ) {
                    640:                 $Str .= 'selected ';
                    641:                 last;
                    642:             }
                    643:         }
                    644:         $Str .= '>'.$item."</option>\n";
                    645:     }
                    646:     $Str .= "</select>\n";
                    647:     return $Str;
1.60      matthew   648: }
                    649: 
1.115     matthew   650: #######################################################
                    651: #######################################################
                    652: 
                    653: =pod
                    654: 
                    655: =item &get_selected_maps($elementname)
                    656: 
                    657: Input: Name of the <select> form element used to specify the maps.
                    658: 
                    659: Returns: Array of symbs of selected maps or the description 'all'.
                    660:    If form.$elementname does not exist, 'all' is returned.
                    661: 
                    662: =cut
                    663: 
                    664: #######################################################
                    665: #######################################################
                    666: sub get_selected_maps {
                    667:     my ($elementname) = @_;
1.124     albertel  668:     my @selected_maps = 
                    669: 	&Apache::loncommon::get_env_multiple('form.'.$elementname);
                    670:     @selected_maps = ('all') if (! @selected_maps);
1.118     matthew   671:     foreach my $map (@selected_maps) {
                    672:         if ($map eq 'all') {
                    673:             @selected_maps = ('all');
                    674:             last;
                    675:         }
                    676:     }
1.115     matthew   677:     return @selected_maps;
                    678: }
                    679: 
                    680: 
                    681: #######################################################
                    682: #######################################################
                    683: 
                    684: =pod
                    685: 
1.116     matthew   686: =item &selected_sequences_with_assessments
1.115     matthew   687: 
                    688: Retrieve the sequences which were selected by the user to show.  
                    689: 
                    690: Input: $mode: scalar.  Either 'selected' or 'all'.  If not specified,
                    691:     'selected' is used.
                    692: 
                    693: Returns: an array containing a navmap object and navmap resources, 
                    694:     or an array containing a scalar with an error message.
                    695: 
                    696: =cut
                    697: 
                    698: #######################################################
                    699: #######################################################
1.116     matthew   700: sub selected_sequences_with_assessments {
1.115     matthew   701:     my ($mode) = @_;
                    702:     $mode = 'selected' if (! defined($mode));
                    703:     my $navmap = Apache::lonnavmaps::navmap->new();
                    704:     if (!defined($navmap)) {
                    705:         return ('Can not open Coursemap');
                    706:     }
                    707:     #
                    708:     my @sequences = $navmap->retrieveResources(undef,
                    709:                                                sub { shift->is_map(); },1,0,1);
1.139     raeburn   710:     my $toplevelseq = $navmap->getById('0.0');
                    711:     if (!grep(/^\Q$toplevelseq\E$/,@sequences)) {
                    712:         unshift(@sequences,$toplevelseq);
                    713:     }
                    714: 
1.115     matthew   715:     my @sequences_with_assessments;
1.139     raeburn   716:     foreach my $sequence (@sequences) {
1.120     matthew   717: 	if ($navmap->hasResource($sequence,sub { shift->is_problem(); },0,1)){
1.115     matthew   718:             push(@sequences_with_assessments,$sequence);
                    719:         }
                    720:     }
                    721:     #
                    722:     my @sequences_to_show;
                    723:     foreach my $sequence (@sequences_with_assessments) {
                    724:         if ($mode eq 'all') {
                    725:             push (@sequences_to_show,$sequence);
                    726:         } elsif ($mode eq 'selected') {
1.116     matthew   727:             foreach my $map_symb (&get_selected_maps('Maps')) {
1.115     matthew   728:                 if ($sequence->symb eq $map_symb || $map_symb eq 'all'){
                    729:                     push (@sequences_to_show,$sequence);
                    730:                     last; # Only put it in once
                    731:                 }
                    732:             }
                    733:         }
                    734: 
                    735:     }
                    736:     return $navmap,@sequences_to_show;
                    737: }
                    738: 
1.60      matthew   739: ##############################################
                    740: ##############################################
                    741: 
                    742: =pod 
                    743: 
1.115     matthew   744: =item &map_select($elementname,$status,$numvisible,$restriction) 
1.60      matthew   745: 
                    746: Returns html for a selection box allowing the user to choose one (or more) 
                    747: of the sequences in the course.  The values of the sequences are the symbs.
                    748: If the top sequence is selected, the value 'top' will result.
                    749: 
                    750: =over 4
                    751: 
                    752: =item $elementname The name of the HTML form element
                    753: 
                    754: =item $status 'multiple' or 'single' selection box
                    755: 
                    756: =item $numvisible The number of options to be visible
                    757: 
                    758: =back
                    759: 
                    760: =cut
                    761: 
                    762: ##############################################
                    763: ##############################################
1.115     matthew   764: sub map_select {
                    765:     my ($elementname,$status,$numvisible)=@_;
1.60      matthew   766:     if ($numvisible < 1) {
                    767:         return;
                    768:     }
                    769:     #
                    770:     # Set up array of selected items
1.115     matthew   771:     my @selected_maps = &get_selected_maps($elementname);
1.60      matthew   772:     #
                    773:     # Build the form element
1.115     matthew   774:     my $form = "\n";
                    775:     $form .= '<select name="'.$elementname.'" ';
1.60      matthew   776:     if ($status ne 'single') {
1.115     matthew   777:         $form .= 'multiple="true" ';
1.60      matthew   778:     }
1.115     matthew   779:     $form .= 'size="'.$numvisible.'" >'."\n";
1.60      matthew   780:     #
1.61      matthew   781:     # Put in option for 'all'
1.115     matthew   782:     $form .= '    <option value="all" ';
1.118     matthew   783:     if ($selected_maps[0] eq 'all') {
                    784:         $form .= 'selected ';
1.61      matthew   785:     }
1.115     matthew   786:     $form .= ">all</option>\n";
1.61      matthew   787:     #
1.60      matthew   788:     # Loop through the sequences
1.117     matthew   789:     my @sequences = &selected_sequences_with_assessments('all');
1.115     matthew   790:     my $navmap;
                    791:     if (!ref($sequences[0])) {
                    792:         return $sequences[0];
                    793:     } else {
                    794:         $navmap = shift(@sequences);
                    795:     }
                    796:     foreach my $seq (@sequences){
                    797:         $form .= '    <option value="'.$seq->symb.'" ';
                    798:         foreach (@selected_maps) {
                    799:             if ($seq->symb eq $_) {
                    800:                 $form .= 'selected ';
1.60      matthew   801:                 last;
                    802:             }
                    803:         }
1.115     matthew   804:         $form .= '>'.$seq->compTitle."</option>\n";
1.60      matthew   805:     }
1.115     matthew   806:     $form .= "</select>\n";
                    807:     return $form;
1.60      matthew   808: }
                    809: 
                    810: ##############################################
                    811: ##############################################
                    812: 
                    813: =pod 
                    814: 
                    815: =item &SectionSelect($elementname,$status,$numvisible) 
                    816: 
                    817: Returns html for a selection box allowing the user to choose one (or more) 
                    818: of the sections in the course.  
                    819: 
1.119     matthew   820: Uses the package variables @Sections
1.60      matthew   821: =over 4
                    822: 
                    823: =item $elementname The name of the HTML form element
                    824: 
                    825: =item $status 'multiple' or 'single' selection box
                    826: 
                    827: =item $numvisible The number of options to be visible
                    828: 
                    829: =back
                    830: 
                    831: =cut
                    832: 
                    833: ##############################################
                    834: ##############################################
                    835: sub SectionSelect {
                    836:     my ($elementname,$status,$numvisible)=@_;
                    837:     if ($numvisible < 1) {
                    838:         return;
                    839:     }
                    840:     #
1.71      matthew   841:     # Make sure we have the data we need to continue
                    842:     if (! @Sections) {
                    843:         &PrepareClasslist()
                    844:     }
                    845:     #
1.60      matthew   846:     # Build the form element
                    847:     my $Str = "\n";
                    848:     $Str .= '<select name="'.$elementname.'" ';
                    849:     if ($status ne 'single') {
                    850:         $Str .= 'multiple="true" ';
                    851:     }
                    852:     $Str .= 'size="'.$numvisible.'" >'."\n";
                    853:     #
                    854:     # Loop through the sequences
                    855:     foreach my $s (@Sections) {
                    856:         $Str .= '    <option value="'.$s.'" ';
1.119     matthew   857:         foreach (&get_selected_sections()) {
1.61      matthew   858:             if ($s eq $_) {
1.60      matthew   859:                 $Str .= 'selected ';
                    860:                 last;
                    861:             }
                    862:         }
                    863:         $Str .= '>'.$s."</option>\n";
                    864:     }
                    865:     $Str .= "</select>\n";
                    866:     return $Str;
1.80      matthew   867: }
                    868: 
1.130     raeburn   869: ##############################################
                    870: ##############################################
                    871:                                                                                     
                    872: =pod
                    873:                                                                                     
                    874: =item &GroupSelect($elementname,$status,$numvisible)
                    875:                                                                                     
                    876: Returns html for a selection box allowing the user to choose one (or more)
                    877: of the groups in the course.
                    878:                                                                                     
                    879: Uses the package variables @Groups
                    880: =over 4
                    881:                                                                                     
                    882: =item $elementname The name of the HTML form element
                    883:                                                                                     
                    884: =item $status 'multiple' or 'single' selection box
                    885:                                                                                     
                    886: =item $numvisible The number of options to be visible
                    887:                                                                                     
                    888: =back
                    889:                                                                                     
                    890: =cut
                    891:                                                                                     
                    892: ##############################################
                    893: ##############################################
                    894: sub GroupSelect {
                    895:     my ($elementname,$status,$numvisible)=@_;
                    896:     if ($numvisible < 1) {
                    897:         return;
                    898:     }
                    899:     #
                    900:     # Make sure we have the data we need to continue
                    901:     if (! @Groups) {
                    902:         &PrepareClasslist();
                    903:     }
                    904:     #
                    905:     # Build the form element
                    906:     my $Str = "\n";
                    907:     $Str .= '<select name="'.$elementname.'" ';
                    908:     if ($status ne 'single') {
                    909:         $Str .= 'multiple="true" ';
                    910:     }
                    911:     $Str .= 'size="'.$numvisible.'" >'."\n";
                    912:     #
                    913:     # Loop through the groups
                    914:     foreach my $s (@Groups) {
                    915:         $Str .= '    <option value="'.$s.'" ';
                    916:         foreach my $group (&get_selected_groups()) {
                    917:             if ($s eq $group) {
                    918:                 $Str .= 'selected ';
                    919:                 last;
                    920:             }
                    921:         }
                    922:         $Str .= '>'.$s."</option>\n";
                    923:     }
                    924:     $Str .= "</select>\n";
                    925: }
                    926: 
                    927: 
1.61      matthew   928: ##################################################
                    929: ##################################################
1.60      matthew   930: sub DisplayClasslist {
                    931:     my ($r)=@_;
1.107     matthew   932:     &Apache::lonhtmlcommon::add_breadcrumb
                    933:         ({text=>'Select One Student'});
1.60      matthew   934:     #
1.105     matthew   935:     # Output some of the standard interface components
                    936:     my $Str;
1.132     albertel  937:     $Str .= &Apache::lonhtmlcommon::breadcrumbs('Select One Student');
1.105     matthew   938:     $Str .= '<p><table cellspacing="5">'."\n";
                    939:     $Str .= '<tr>';
                    940:     $Str .= '<th align="center"><b>'.&mt('Sections').'</b></th>';
1.130     raeburn   941:     $Str .= '<th align="center"><b>'.&mt('Groups').'</b></th>';
1.137     raeburn   942:     $Str .= '<th align="center"><b>'.&mt('Access Status').'</b></th>';
1.105     matthew   943:     $Str .= '</tr>'.$/;
                    944:     $Str .= '<tr>';
                    945:     $Str .= '<td>'.
                    946:         &Apache::lonstatistics::SectionSelect('Section','multiple',5).
                    947:         '</td>';
1.130     raeburn   948:     $Str .=  '<td>'.
                    949:         &Apache::lonstatistics::GroupSelect('Group','multiple',5).
                    950:         '</td>';
1.105     matthew   951:     $Str .= '<td>'.
                    952:         &Apache::lonhtmlcommon::StatusOptions(undef,undef,5).
                    953:         '</td>';
                    954:     
                    955:     $Str .= '</tr>'.$/;
                    956:     $Str .= '</table></p>';
                    957:     $Str .= '<input type="submit" name="selectstudent" value="'.
                    958:         &mt('Update Display').'" />';
                    959:     $r->print($Str);
                    960:     $r->rflush();
                    961:     #
1.130     raeburn   962:     my @Fields = ('fullname','username','domain','id','section','status','groups');
1.60      matthew   963:     #
1.105     matthew   964:     $Str = '';
1.119     matthew   965:     my @selected_sections = &get_selected_sections();
1.78      matthew   966:     if (! @Students) {
1.119     matthew   967:         if ($selected_sections[0] eq 'all') { 
1.141     bisitz    968:             if (lc($env{'form.Status'}) eq 'active') {
                    969:                 $Str .= '<p class="LC_info">'.
1.106     matthew   970:                 &mt('There are no currently enrolled students in the course.').
1.141     bisitz    971:                     '</p>';
1.123     albertel  972:             } elsif (lc($env{'form.Status'}) eq 'expired') {
1.141     bisitz    973:                 $Str .= '<p class="LC_info">'.
1.106     matthew   974:                     &mt('There are no previously enrolled students in the course.').
1.141     bisitz    975:                         '</p>';
                    976:             } elsif (lc($env{'form.Status'}) eq 'future') {
                    977:                 $Str .= '<p class="LC_info">'.
                    978:                     &mt('There are no students with future access in the course.').
                    979:                         '</p>';
                    980:             } else { # 'any' and any others
                    981:                $Str .= '<p class="LC_info">'.
                    982:                     &mt('There are no students in the course.').
                    983:                     '</p>';
1.78      matthew   984:             }
                    985:         } else { 
1.141     bisitz    986:             if (lc($env{'form.Status'}) eq 'active') {
                    987:                 $Str .= '<p class="LC_info">'.
1.106     matthew   988:                     &mt('There are no currently enrolled students in the selected sections.').
1.141     bisitz    989:                     '</p>';
1.123     albertel  990:             } elsif (lc($env{'form.Status'}) eq 'expired') {
1.141     bisitz    991:                 $Str .= '<p class="LC_info">'.
1.106     matthew   992:                     &mt('There are no previously enrolled students in the selected sections.').
1.141     bisitz    993:                     '</p>';
                    994:             } elsif (lc($env{'form.Status'}) eq 'future') {
                    995:                 $Str .= '<p class="LC_info">'.
                    996:                     &mt('There are no students with future access in the selected sections.').
                    997:                         '</p>';
                    998:             } else { # 'any' and any others
                    999:                 $Str .= '<p class="LC_info">'.
                   1000:                     &mt('There are no students in the selected sections.').
                   1001:                     '</p>';
1.78      matthew  1002:             }
                   1003:         }
1.141     bisitz   1004:         $Str.= '<p>'
                   1005:               .'<a href="/adm/statistics?reportSelected=student_assessment">'
                   1006:               .&mt('Return to the chart').'</a>'
                   1007:               .'</p>';
1.78      matthew  1008:         $r->print($Str);
                   1009:         $r->rflush();
                   1010:         return;
                   1011:     }
                   1012: 
1.141     bisitz   1013:     $Str .= '<h2>'.&mt('Select One Student').'</h2>'
                   1014:            .'<p>'.&mt("Click on a student's name or username to view their chart").'</p>'
                   1015:            .&Apache::loncommon::start_data_table()
                   1016:            .&Apache::loncommon::start_data_table_header_row();
1.60      matthew  1017:     foreach my $field (@Fields) {
1.101     matthew  1018:         $Str .= '<th><a href="/adm/statistics?'.
                   1019:             'reportSelected=student_assessment&'.
                   1020:             'selectstudent=1&'.
1.106     matthew  1021:             'sort='.$field.'">'.&mt($field).
1.60      matthew  1022:             '</a></th>';
                   1023:     }
1.141     bisitz   1024:     $Str .= &Apache::loncommon::end_data_table_header_row();
1.60      matthew  1025:     #
1.65      matthew  1026:     foreach my $student (@Students) { # @Students is a package variable
1.60      matthew  1027:         my $sname = $student->{'username'}.':'.$student->{'domain'};
1.141     bisitz   1028:         $Str .= &Apache::loncommon::start_data_table_row();
1.60      matthew  1029:         #
                   1030:         foreach my $field (@Fields) {
                   1031:             $Str .= '<td>';
1.78      matthew  1032:             if ($field eq 'fullname' || $field eq 'username') {
1.60      matthew  1033:                 $Str .= '<a href="/adm/statistics?reportSelected=';
1.136     www      1034:                 $Str .= &escape('student_assessment');
                   1035:                 $Str .= '&sort='.&escape($env{'form.sort'});
1.72      matthew  1036:                 $Str .= '&SelectedStudent=';
1.136     www      1037:                 $Str .= &escape($sname).'">';
1.60      matthew  1038:                 $Str .= $student->{$field}.'&nbsp';
                   1039:                 $Str .= '</a>';
1.106     matthew  1040:             } elsif ($field eq 'status') {
                   1041:                 $Str .= &mt($student->{$field});
1.60      matthew  1042:             } else {
                   1043:                 $Str .= $student->{$field};
                   1044:             }
                   1045:             $Str .= '</td>';
                   1046:         }
1.141     bisitz   1047:         $Str .= &Apache::loncommon::end_data_table_row();
1.60      matthew  1048:     }
1.141     bisitz   1049:     $Str .= &Apache::loncommon::end_data_table();
1.60      matthew  1050:     #
                   1051:     $r->print($Str);
                   1052:     $r->rflush();
                   1053:     #
                   1054:     return;
                   1055: }
                   1056: 
1.65      matthew  1057: ##############################################
                   1058: ##############################################
1.33      stredwic 1059: sub CreateMainMenu {
1.65      matthew  1060:     #
1.85      matthew  1061:     # Define menu data
                   1062:     my @reports = ({ internal_name => 'problem_statistics',
                   1063:                      name => &mt('Overall Problem Statistics'),
                   1064:                      short_description => 
                   1065:     &mt('Student performance statistics on all problems.'),
                   1066:                  },
                   1067:                    { internal_name => 'problem_analysis',
                   1068:                      name => &mt('Detailed Problem Analysis'),
                   1069:                      short_description => 
                   1070:     &mt('Detailed statistics and graphs of student performance on problems.'),
                   1071:                  },
1.89      matthew  1072:                    { internal_name => 'submissiontime_analysis',
1.94      matthew  1073:                      name => &mt('Submission Time Plots'),
1.89      matthew  1074:                      short_description => 
                   1075:     &mt('Display and analysis of submission times on assessments.'),
                   1076:                  },
1.97      matthew  1077:                    { internal_name => 'student_submission_reports',
                   1078:                      name => &mt('Student Submission Reports'),
                   1079:                      short_description => 
1.111     matthew  1080:     &mt('Prepare reports of student submissions.'),
1.97      matthew  1081:                  },
1.104     matthew  1082:                    { internal_name => 'survey_reports',
                   1083:                      name => &mt('Survey Reports'),
                   1084:                      short_description => 
                   1085:     &mt('Prepare reports on survey results.'),
                   1086:                  },
1.94      matthew  1087:                    { internal_name => 'correct_problems_plot',
                   1088:                      name => &mt('Correct Problems Plot'),
                   1089:                      short_description => 
                   1090:     &mt('Display a histogram of student performance in the course.'),
                   1091:                  },
1.128     albertel 1092: #                   { internal_name => 'grading_analysis',
                   1093: #                     name => &mt('Detailed Grading Analysis'),
                   1094: #                     short_description => 
                   1095: #    &mt('Display statistics about who graded who.'),
                   1096: #                 },
1.88      matthew  1097: #                   { internal_name => 'student_assessment',
                   1098: #                     name => &mt('Problem Status Chart'),
                   1099: #                     short_description => 
                   1100: #    &mt('Brief view of each students performance in course.'),
                   1101: #                 },
1.85      matthew  1102:                    # 'percentage'  => 'Correct-problems Plot',
                   1103:                    # 'activitylog' => 'Activity Log',
                   1104:                    );
1.65      matthew  1105:     #
1.85      matthew  1106:     # Create the menu
                   1107:     my $Str;
1.98      matthew  1108:     $Str .= '<h2>'.&mt('Please select a report to generate').'</h2>';
1.85      matthew  1109:     foreach my $reportdata (@reports) {
1.87      matthew  1110:         $Str .='    <h3><a href="/adm/statistics?reportSelected='.
1.85      matthew  1111:             $reportdata->{'internal_name'}.'" >'.
1.87      matthew  1112:             $reportdata->{'name'}."</a></h3>\n";
                   1113:         $Str .= '    '.('&nbsp;'x8).$reportdata->{'short_description'}.
                   1114:             "\n";
1.85      matthew  1115:     }
                   1116:     $Str .="</dl>\n";
1.65      matthew  1117:     #
1.33      stredwic 1118:     return $Str;
                   1119: }
                   1120: 
1.65      matthew  1121: ##############################################
                   1122: ##############################################
1.1       albertel 1123: sub handler {
1.31      minaeibi 1124:     my $r=shift;
1.65      matthew  1125:     my $c = $r->connection();
                   1126:     #
                   1127:     # Check for overloading
1.51      www      1128:     my $loaderror=&Apache::lonnet::overloaderror($r);
                   1129:     if ($loaderror) { return $loaderror; }
                   1130:     $loaderror=
                   1131:        &Apache::lonnet::overloaderror($r,
1.123     albertel 1132:          $env{'course.'.$env{'request.course.id'}.'.home'});
1.51      www      1133:     if ($loaderror) { return $loaderror; }
1.65      matthew  1134:     #
                   1135:     # Check for access
1.123     albertel 1136:     if (! &Apache::lonnet::allowed('vgr',$env{'request.course.id'})) {
                   1137:         $env{'user.error.msg'}=
1.69      matthew  1138:             $r->uri.":vgr:0:0:Cannot view grades for complete course";
                   1139:         if (! &Apache::lonnet::allowed('vgr',
1.123     albertel 1140:                       $env{'request.course.id'}.'/'.$env{'request.course.sec'})) {
                   1141:             $env{'user.error.msg'}=
1.69      matthew  1142:                 $r->uri.":vgr:0:0:Cannot view grades with given role";
                   1143:             return HTTP_NOT_ACCEPTABLE;
                   1144:         }
1.27      stredwic 1145:     }
1.65      matthew  1146:     #
                   1147:     # Send the header
1.92      www      1148:     &Apache::loncommon::no_cache($r);
                   1149:     &Apache::loncommon::content_type($r,'text/html');
1.27      stredwic 1150:     $r->send_http_header;
1.92      www      1151:     if ($r->header_only) { return OK; }
1.65      matthew  1152:     #
                   1153:     # Extract form elements from query string
1.60      matthew  1154:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.65      matthew  1155:                                             ['sort','reportSelected',
1.72      matthew  1156:                                              'SelectedStudent']);
1.65      matthew  1157:     #
                   1158:     # Give the LON-CAPA page header
1.109     matthew  1159:     my $style = <<ENDSTYLE;
                   1160: <style type="text/css">
                   1161:     ul.sub_studentans { list-style-type: none }
                   1162:     ul.sub_correctans { list-style-type: none }
1.110     matthew  1163:     tr.even           { background-color: \#CCCCCC }
                   1164:     td.essay          { border: 1px solid gray; }
1.109     matthew  1165: </style>
                   1166: ENDSTYLE
1.129     albertel 1167:       
                   1168:     $r->print(&Apache::loncommon::start_page('Course Statistics and Charts',
                   1169: 					     $style));
1.65      matthew  1170:     $r->rflush();
1.85      matthew  1171:     # 
                   1172:     # Either print out a menu for them or send them to a report
1.98      matthew  1173:     &Apache::lonhtmlcommon::clear_breadcrumbs();
                   1174:     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/statistics',
1.100     matthew  1175:                                             title=>'Statistics',
                   1176:                                             text =>'Statistics',
1.98      matthew  1177:                                             faq=>139,
                   1178:                                             bug=>'Statistics and Charts'});
1.123     albertel 1179:     if (! exists($env{'form.reportSelected'}) || 
                   1180:         $env{'form.reportSelected'} eq '') {
1.132     albertel 1181:         $r->print(&Apache::lonhtmlcommon::breadcrumbs('Statistics Main Page').
1.98      matthew  1182:                   &CreateMainMenu());
1.85      matthew  1183:     } else {
1.65      matthew  1184:     #
1.85      matthew  1185:         if (! &Apache::lonmysql::verify_sql_connection()) {
                   1186:             my $serveradmin = $r->dir_config('lonAdmEMail');
1.140     bisitz   1187:             $r->print('<h2 class="LC_error">'.
1.85      matthew  1188:                       &mt('Unable to connect to database!').
1.140     bisitz   1189:                       '</h2>');
                   1190:             $r->print('<p>'
                   1191:                      .&mt('Please notify the server administrator [_1]',
                   1192:                          ,'<b>'.$serveradmin.'</b>')
                   1193:                      .'</p>');
1.85      matthew  1194:             $r->print('<p>'.
                   1195:                       &mt('Course Statistics and Charts cannot be '.
                   1196:                           'retrieved until the database is restarted.  '.
                   1197:                           'Your data is intact but cannot be displayed '.
                   1198:                           'at this time.').'</p>');
1.129     albertel 1199:             $r->print(&Apache::loncommon::end_page());
1.85      matthew  1200:             return;
                   1201:         }
                   1202:         #
                   1203:         # Clean out the caches
1.123     albertel 1204:         if (exists($env{'form.ClearCache'})) {
                   1205:             &Apache::loncoursedata::delete_caches($env{'requres.course.id'});
1.85      matthew  1206:         }
                   1207:         #
                   1208:         # Begin form output
                   1209:         $r->print('<form name="Statistics" ');
                   1210:         $r->print('method="post" action="/adm/statistics">');
                   1211:         $r->rflush();
                   1212:         #
1.123     albertel 1213:         my $GoToPage = $env{'form.reportSelected'};
1.90      matthew  1214:         #
1.85      matthew  1215:         $r->print('<input type="hidden" name="reportSelected" value="'.
                   1216:                   $GoToPage.'">');
                   1217:         if($GoToPage eq 'activitylog') {
1.65      matthew  1218: #        &Apache::lonproblemstatistics::Activity();
1.85      matthew  1219:         } elsif($GoToPage eq 'problem_statistics') {
1.98      matthew  1220:             &Apache::lonhtmlcommon::add_breadcrumb
                   1221:                 ({href=>'/adm/statistics?reportselected=problem_statistics',
1.100     matthew  1222:                   text=>'Overall Problem Statistics'});
1.85      matthew  1223:             &Apache::lonproblemstatistics::BuildProblemStatisticsPage($r,$c);
                   1224:         } elsif($GoToPage eq 'problem_analysis') {
1.98      matthew  1225:             &Apache::lonhtmlcommon::add_breadcrumb
                   1226:                 ({href=>'/adm/statistics?reportselected=problem_analysis',
1.100     matthew  1227:                   text=>'Detailed Problem Analysis'});
1.85      matthew  1228:             &Apache::lonproblemanalysis::BuildProblemAnalysisPage($r,$c);
1.89      matthew  1229:         } elsif($GoToPage eq 'submissiontime_analysis') {
1.98      matthew  1230:             &Apache::lonhtmlcommon::add_breadcrumb
                   1231:                 ({href=>
                   1232:                       '/adm/statistics?reportselected=submissiontime_analysis',
1.100     matthew  1233:                       text=>'Submission Time Plots'});
1.89      matthew  1234:             &Apache::lonsubmissiontimeanalysis::BuildSubmissionTimePage($r,$c);
1.97      matthew  1235:         } elsif($GoToPage eq 'student_submission_reports') {
1.98      matthew  1236:             &Apache::lonhtmlcommon::add_breadcrumb
                   1237:                 ({href=>
                   1238:                   '/adm/statistics?reportselected=student_submission_reports',
1.100     matthew  1239:                   text=>'Student Submission Reports'});
1.97      matthew  1240:             &Apache::lonstudentsubmissions::BuildStudentSubmissionsPage($r,$c);
1.104     matthew  1241:         } elsif($GoToPage eq 'survey_reports') {
                   1242:             &Apache::lonhtmlcommon::add_breadcrumb
                   1243:                 ({href=>
                   1244:                   '/adm/statistics?reportselected=survey_reports',
                   1245:                   text=>'Survey Reports'});
                   1246:             &Apache::lonsurveyreports::BuildSurveyReportsPage($r,$c);
1.94      matthew  1247:         } elsif($GoToPage eq 'correct_problems_plot') {
1.98      matthew  1248:             &Apache::lonhtmlcommon::add_breadcrumb
                   1249:                 ({href=>'/adm/statistics?reportselected=correct_problems_plot',
1.100     matthew  1250:                   text=>'Correct Problems Plot'});
1.94      matthew  1251:             &Apache::loncorrectproblemplot::BuildCorrectProblemsPage($r,$c);
1.85      matthew  1252:         } elsif($GoToPage eq 'student_assessment') {
1.98      matthew  1253:             &Apache::lonhtmlcommon::clear_breadcrumbs();
                   1254:             &Apache::lonhtmlcommon::add_breadcrumb
                   1255:                 ({href=>'/adm/statistics?reportselected=student_assessment',
1.100     matthew  1256:                   text=>'Chart'});
1.85      matthew  1257:             &Apache::lonstudentassessment::BuildStudentAssessmentPage($r,$c);
1.128     albertel 1258:         } elsif($GoToPage eq 'grading_analysis') {
                   1259:             &Apache::lonhtmlcommon::add_breadcrumb
                   1260:                 ({href=>'/adm/statistics?reportselected=grading_anaylsis',
                   1261:                   text=>'Grading Analysis'});
                   1262:             &Apache::longradinganalysis::build_grading_analysis_page($r,$c);
                   1263: 	}
1.85      matthew  1264:         #
                   1265:         $r->print("</form>\n");
1.65      matthew  1266:     }
1.129     albertel 1267:     $r->print(&Apache::loncommon::end_page());
1.65      matthew  1268:     $r->rflush();
                   1269:     #
1.27      stredwic 1270:     return OK;
1.1       albertel 1271: }
1.65      matthew  1272: 
1.1       albertel 1273: 1;
1.59      matthew  1274: 
1.65      matthew  1275: #######################################################
                   1276: #######################################################
                   1277: 
1.59      matthew  1278: =pod
                   1279: 
                   1280: =back
                   1281: 
                   1282: =cut
1.65      matthew  1283: 
                   1284: #######################################################
                   1285: #######################################################
1.59      matthew  1286: 
1.1       albertel 1287: __END__
1.31      minaeibi 1288: 

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>