Annotation of loncom/homework/bridgetask.pm, revision 1.183

1.1       albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
                      3: #
1.183   ! albertel    4: # $Id: bridgetask.pm,v 1.182 2006/09/28 18:59:11 albertel Exp $
1.1       albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
                     28: ###
                     29: 
                     30: 
                     31: package Apache::bridgetask; 
                     32: 
                     33: use strict;
                     34: use Apache::lonnet;
                     35: use Apache::File();
                     36: use Apache::lonmenu;
                     37: use Apache::lonlocal;
                     38: use Apache::lonxml;
1.37      albertel   39: use Apache::slotrequest();
1.1       albertel   40: use Time::HiRes qw( gettimeofday tv_interval );
1.158     www        41: use lib '/home/httpd/lib/perl/';
                     42: use LONCAPA;
                     43:  
1.9       albertel   44: 
1.1       albertel   45: BEGIN {
1.162     albertel   46:     &Apache::lonxml::register('Apache::bridgetask',('Task','IntroParagraph','Dimension','Question','QuestionText','Setup','Instance','InstanceText','Criteria','ClosingParagraph'));
1.1       albertel   47: }
                     48: 
1.169     albertel   49: my %dimension;
1.9       albertel   50: sub initialize_bridgetask {
                     51:     # id of current Dimension, 0 means that no dimension is current 
                     52:     # (inside <Task> only)
1.178     albertel   53:     @Apache::bridgetask::dimension=();
1.9       albertel   54:     # list of all Dimension ids seen
1.168     albertel   55:     %Apache::bridgetask::top_dimensionlist=();
1.9       albertel   56:     # list of all current Instance ids
1.168     albertel   57:     %Apache::bridgetask::instance=();
1.9       albertel   58:     # list of all Instance ids seen in this problem
                     59:     @Apache::bridgetask::instancelist=();
1.15      albertel   60:     # key of queud user data that we are currently grading
                     61:     $Apache::bridgetask::queue_key='';
1.169     albertel   62:     undef(%dimension);
1.9       albertel   63: }
                     64: 
1.4       albertel   65: sub proctor_check_auth {
1.81      albertel   66:     my ($slot_name,$slot,$type)=@_;
1.11      albertel   67:     my $user=$env{'form.proctorname'};
                     68:     my $domain=$env{'form.proctordomain'};
1.4       albertel   69:     
                     70:     my @allowed=split(",",$slot->{'proctor'});
                     71:     foreach my $possible (@allowed) {
1.138     albertel   72: 	my ($puser,$pdom)=(split(':',$possible));
1.4       albertel   73: 	if ($puser eq $user && $pdom eq $domain) {
1.72      albertel   74: 	    my $authenticated=0;
                     75: 	    if ( $slot->{'secret'} =~ /\S/ &&
                     76: 		 $env{'form.proctorpassword'} eq $slot->{'secret'} ) {
                     77: 		$authenticated=1;
                     78: 	    } else {
                     79: 		
                     80: 		my $authhost=&Apache::lonnet::authenticate($puser,$env{'form.proctorpassword'},$pdom);
                     81: 		if ($authhost ne 'no_host') {
                     82: 		    $authenticated=1;
                     83: 		}
                     84: 	    }
1.150     albertel   85: 	    if ($authenticated) {
1.176     albertel   86: 		&check_in($type,$user,$domain,$slot_name);
1.4       albertel   87: 		return 1;
                     88: 	    }
                     89: 	}
                     90:     }
                     91:     return 0;
                     92: }
                     93: 
1.174     albertel   94: sub check_in {
                     95:     my ($type,$user,$domain,$slot_name) = @_;
                     96:     my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
                     97:     if ( $useslots eq 'map_map') {
                     98: 	&check_in_sequence($user,$domain,$slot_name);
                     99:     } else {
                    100: 	&create_new_version($type,$user,$domain,$slot_name);
                    101:     }
                    102:     return 1;
                    103: }
                    104: 
                    105: sub check_in_sequence {
                    106:     my ($user,$domain,$slot_name) = @_;
                    107:     my $navmap = Apache::lonnavmaps::navmap->new();
                    108:     my ($symb) = &Apache::lonxml::whichuser();
                    109:     my ($map)  = &Apache::lonnet::decode_symb($symb);
1.175     albertel  110:     my @resources = 
                    111: 	$navmap->retrieveResources($map, sub { $_[0]->is_problem() },0,0);
1.174     albertel  112:     my %old_history = %Apache::lonhomework::history;
                    113:     my %old_results = %Apache::lonhomework::results;
                    114: 
                    115:     foreach my $res (@resources) {
                    116: 	&Apache::lonxml::debug("doing ".$res->src);
                    117: 	&Apache::structuretags::initialize_storage($res->symb);
                    118: 	my $type = ($res->is_task()) ? 'Task' : 'problem';
                    119: 	&create_new_version($type,$user,$domain,$slot_name);
                    120: 	&Apache::structuretags::finalize_storage($res->symb);
                    121:     }
                    122:     
                    123:     %Apache::lonhomework::history = %old_history;
                    124:     %Apache::lonhomework::results = %old_results;
                    125: }
                    126: 
1.150     albertel  127: sub create_new_version {
                    128:     my ($type,$user,$domain,$slot_name) = @_;
1.174     albertel  129:     
                    130:     my $id = '0';
1.150     albertel  131:     if ($type eq 'Task') {
                    132: 	# increment version
                    133: 	my $version=
                    134: 	    $Apache::lonhomework::history{'resource.0.version'};
                    135: 	$version++;
1.152     albertel  136: 	&Apache::lonxml::debug("Making version $version");
1.150     albertel  137: 	#clean out all current results
                    138: 	foreach my $key (keys(%Apache::lonhomework::history)) {
                    139: 	    if ($key=~/^resource\.0\./) {
                    140: 		$Apache::lonhomework::results{$key}='';
                    141: 	    }
                    142: 	}
                    143: 	
                    144: 	#setup new version and who did it
1.174     albertel  145:        	$Apache::lonhomework::results{'resource.0.version'}=$version;
                    146: 	$id = "$version.0";
1.178     albertel  147: 	if (!defined($user) || !defined($domain)) {
1.174     albertel  148: 	    $user = $env{'user.name'};
                    149: 	    $domain = $env{'user.domain'};
1.150     albertel  150: 	}
1.174     albertel  151: 	
1.150     albertel  152:     } elsif ($type eq 'problem') {
                    153: 	&Apache::lonxml::debug("authed $slot_name");
1.174     albertel  154:     }
1.181     albertel  155:     if (!defined($user) || !defined($domain)) {
                    156: 	$user = $env{'user.name'};
                    157: 	$domain = $env{'user.domain'};
                    158:     }
                    159: 
                    160:     $Apache::lonhomework::results{"resource.$id.checkedin"}=
                    161: 	$user.':'.$domain;
1.174     albertel  162: 
                    163:     if (defined($slot_name)) {
                    164: 	$Apache::lonhomework::results{"resource.$id.checkedin.slot"}=
                    165: 	    $slot_name;
1.150     albertel  166:     }
                    167: }
                    168: 
1.25      albertel  169: sub get_version {
1.29      albertel  170:     my ($version,$previous);
1.25      albertel  171:     if ($env{'form.previousversion'} && 
1.36      albertel  172: 	$env{'form.previousversion'} ne 'current' &&
1.89      albertel  173: 	defined($Apache::lonhomework::history{'resource.'.$env{'form.previousversion'}.'.0.status'})) {
1.29      albertel  174: 	$version=$env{'form.previousversion'};
                    175: 	$previous=1;
                    176:     } else {
1.150     albertel  177: 	if (defined($Apache::lonhomework::results{'resource.0.version'})) {
                    178: 	    $version=$Apache::lonhomework::results{'resource.0.version'};
                    179: 	} elsif (defined($Apache::lonhomework::history{'resource.0.version'})) {
                    180: 	    $version=$Apache::lonhomework::history{'resource.0.version'};
                    181: 	}
1.29      albertel  182: 	$previous=0;
                    183:     }
                    184:     if (wantarray) {
                    185: 	return ($version,$previous);
1.25      albertel  186:     }
1.29      albertel  187:     return $version;
1.25      albertel  188: }
                    189: 
1.8       albertel  190: sub add_previous_version_button {
1.25      albertel  191:     my ($status)=@_;
1.8       albertel  192:     my $result;
1.89      albertel  193:     if ($Apache::lonhomework::history{'resource.0.version'} eq '') {
1.25      albertel  194: 	return '';
                    195:     }
1.89      albertel  196:     if ($Apache::lonhomework::history{'resource.0.version'} < 2 &&
1.29      albertel  197: 	$status ne 'NEEDS_CHECKIN') {
1.25      albertel  198: 	return '';
                    199:     }
1.29      albertel  200:     my $version=&get_version();
                    201:     if ($env{'form.previousversion'} ne '' &&
                    202: 	$env{'form.previousversion'} eq $version) {
                    203: 	$result.="<h3>".&mt("Showing previous version [_1]",$version).
                    204: 	    "</h3>\n";
                    205:     }
                    206:     my @to_show;
1.89      albertel  207:     foreach my $test_version (1..$Apache::lonhomework::history{'resource.0.version'}) {
                    208: 	if (defined($Apache::lonhomework::history{'resource.'.$test_version.'.0.status'})) {
1.29      albertel  209: 	    push(@to_show,$test_version);
                    210: 	}
                    211:     }
                    212:     my $list='<option>'.
                    213: 	join("</option>\n<option>",@to_show).
                    214: 	     "</option>\n";
1.36      albertel  215:     $list.='<option value="current">'.&mt('Current').'</option>';
1.115     albertel  216:     $result.='<form name="getprevious" method="post" action="';
1.29      albertel  217:     my $uri=$env{'request.uri'};
                    218:     if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
                    219:     $result.=$uri.'">'.
                    220: 	&mt(' Show a previously done version: [_1]','<select onchange="this.form.submit()" name="previousversion">
                    221: <option>'.&mt('Pick one').'</option>
                    222: '.$list.'
                    223: </select>')."</form>";
1.8       albertel  224:     return $result;
                    225: }
                    226: 
1.13      albertel  227: sub add_grading_button {
1.59      albertel  228:     my (undef,$cid)=&Apache::lonxml::whichuser();
                    229:     my $cnum=$env{'course.'.$cid.'.num'};
                    230:     my $cdom=$env{'course.'.$cid.'.domain'};
1.144     albertel  231:     my %sections = &Apache::loncommon::get_sections($cdom,$cnum);
                    232: 
1.59      albertel  233:     my $size=5;
                    234:     if (scalar(keys(%sections)) < 3) {
                    235: 	$size=scalar(keys(%sections))+2;
                    236:     }
1.122     albertel  237:     my $sec_select = '<select multiple="multiple" name="chosensections" size="'.$size.'">'."\n";
1.59      albertel  238:     $sec_select .= "<option value='all' selected='selected'>all</option>\n";
                    239:     foreach my $sec (sort {lc($a) cmp lc($b)} (keys(%sections))) {
1.122     albertel  240: 	$sec_select .= "<option value=\"$sec\">$sec</option>\n";
1.59      albertel  241:     }
                    242:     $sec_select .= "<option value='none'>none</option></select>\n";
                    243:     
1.29      albertel  244:     my $result=' <input type="submit" name="gradeasubmission" value="'.
1.13      albertel  245: 	&mt("Get a submission to grade").'" />';
                    246:     $result.='<input type="hidden" name="grade_target" value="webgrade" />';
1.40      albertel  247:     if (&Apache::lonnet::allowed('mgq',$env{'request.course.id'})) {
1.34      albertel  248: 	my ($entries,$ready,$locks)=&get_queue_counts('gradingqueue');
1.106     albertel  249: 	$result.='<table><tr>';
                    250: 	$result.='<td rowspan="4">Specify a section: </td><td rowspan="4">'.$sec_select.'</td>';
                    251: 	$result.='<td>'.' <input type="submit" name="reviewagrading" value="'.
                    252: 	    &mt("Select an entry from the grading queue:").'" /> ';
1.34      albertel  253: 
1.107     albertel  254: 	$result.= &mt("[_1] entries, [_2] ready, [_3] being graded",$entries,$ready,$locks).' </td></tr>'."\n";
1.34      albertel  255: 
                    256: 	($entries,$ready,$locks)=&get_queue_counts('reviewqueue');
1.106     albertel  257: 	$result.='<tr><td>'.
                    258: 	    ' <input type="submit" name="reviewasubmission" value="'.
                    259: 	    &mt("Select an entry from the review queue:").'" /> ';
                    260: 	$result.=&mt("[_1] entries, [_2] ready, [_3] being graded",
                    261: 		     $entries,$ready,$locks).'</td></tr>'."\n";
                    262: 	$result.='<tr><td> <input type="submit" name="regradeasubmission" value="'.
                    263: 	    &mt("List of user's grade status").'" /> </td></tr></table>'."\n";
1.105     albertel  264: 	$result.='<p> <input type="submit" name="regradeaspecificsubmission" value="'.
1.106     albertel  265: 	    &mt("Regrade specific user:").'" />'."\n";
1.105     albertel  266: 	$result.='<input type="text" size="12" name="gradinguser" />';
                    267: 	$result.=&Apache::loncommon::select_dom_form($env{'user.domain'},
                    268: 						     'gradingdomain');
                    269: 	$result.=' '.
                    270: 	    &Apache::loncommon::selectstudent_link('gradesubmission',
                    271: 						   'gradinguser',
                    272: 						   'gradingdomain');
                    273: 	$result.=&Apache::loncommon::studentbrowser_javascript();
1.123     albertel  274: 	$result.= '</p>';
1.144     albertel  275:     }
1.13      albertel  276:     return $result;
                    277: }
                    278: 
1.22      albertel  279: sub add_request_another_attempt_button {
1.38      albertel  280:     my ($text)=@_;
                    281:     if (!$text) { $text="Request another attempt"; }
1.25      albertel  282:     my $result;
1.36      albertel  283:     my $symb=&Apache::lonnet::symbread();
1.149     albertel  284:     # not a slot access based resource
                    285:     my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
                    286:     if ($useslots =~ /^\s*no\s*$/i) {
                    287: 	return '';
                    288:     }
                    289: 
1.37      albertel  290:     my ($slot_name,$slot)=&Apache::slotrequest::check_for_reservation($symb);
1.38      albertel  291:     my $action='get_reservation';
1.37      albertel  292:     if ($slot_name) {
1.38      albertel  293: 	$text="Change reservation.";
                    294: 	$action='change_reservation';
1.37      albertel  295: 	my $description=&Apache::slotrequest::get_description($slot_name,
                    296: 							      $slot);
                    297: 	$result.=(<<STUFF);
                    298: <p> Will be next available: $description </p>
                    299: STUFF
                    300:     }
1.38      albertel  301:     
                    302:     if ($env{'request.enc'}) { $symb=&Apache::lonenc::encrypted($symb); }
1.158     www       303:     $symb=&escape($symb);
1.115     albertel  304:     $result.='<form method="post" action="/adm/slotrequest">'.
1.38      albertel  305: 	'<input type="hidden" name="symb" value="'.$symb.'" />'.
                    306: 	'<input type="hidden" name="command" value="'.$action.'" />'.
                    307: 	'<input type="submit" name="requestattempt" value="'.
                    308: 	&mt($text).'" />'.
                    309: 	'</form>';
1.25      albertel  310:     return $result;
1.22      albertel  311: }
                    312: 
1.30      albertel  313: sub preserve_grade_info {
                    314:     my $result;
                    315:     # if we are viewing someone else preserve that info
                    316:     if (defined $env{'form.grade_symb'}) {
                    317: 	foreach my $field ('symb','courseid','domain','username') {
                    318: 	    $result .= '<input type="hidden" name="grade_'.$field.
                    319: 		'" value="'.$env{"form.grade_$field"}.'" />'."\n";
                    320: 	}
                    321:     }
                    322:     return $result;
                    323: }
                    324: 
1.53      albertel  325: sub style {
1.125     albertel  326:     my ($target) = @_;
                    327:     if ($target eq 'web'
                    328: 	|| $target eq 'webgrade') {
                    329: 	return (<<STYLE);
1.126     albertel  330: <link rel="stylesheet" type="text/css" href="/res/adm/includes/task.css" />
1.53      albertel  331: STYLE
1.125     albertel  332:     }
                    333:     return;
1.53      albertel  334: }
                    335: 
1.54      albertel  336: sub show_task {
                    337:     my ($status,$previous)=@_;
                    338:     if (!$previous && (
                    339: 		       ( $status eq 'CLOSED' ) ||
                    340: 		       ( $status eq 'BANNED') ||
                    341: 		       ( $status eq 'UNAVAILABLE') ||
                    342: 		       ( $status eq 'NOT_IN_A_SLOT') ||
                    343: 		       ( $status eq 'NEEDS_CHECKIN') ||
                    344: 		       ( $status eq 'WAITING_FOR_GRADE') ||
1.150     albertel  345: 		       ( $status eq 'INVALID_ACCESS') ||
                    346: 		       ( &get_version() eq ''))) {
1.54      albertel  347: 	return 0;
                    348:     }
1.64      albertel  349:     if ($env{'form.donescreen'}) { return 0; }
1.54      albertel  350:     return 1;
                    351: }
                    352: 
1.173     albertel  353: my @delay;
                    354: sub nest { 
                    355:     if (@delay) {
                    356: 	return $delay[-1];
                    357:     } else {
                    358: 	return;
                    359:     }
                    360: }
                    361: 
                    362: sub nested_parse {
                    363:     my ($str,$env,$args) = @_;
                    364:     my @old_env = @Apache::scripttag::parser_env;
                    365:     @Apache::scripttag::parser_env = @$env;
                    366:     if (exists($args->{'set_dim_id'})) {
                    367: 	&enable_dimension_parsing($args->{'set_dim_id'});
                    368:     }
                    369:     push(@delay,(($args->{'delayed_dim_results'})? 1 : 0));
                    370:     my $result = &Apache::scripttag::xmlparse($$str);
                    371:     pop(@delay);
                    372:     if (exists($args->{'set_dim_id'})) {
                    373: 	&disable_dimension_parsing();
                    374:     }
                    375:     @Apache::scripttag::parser_env = @old_env;
                    376:     if ($args->{'delayed_dim_results'}) {
                    377: 	my $dim = &get_dim_id();
1.180     albertel  378: 	&Apache::lonxml::debug(" tossing out $result ");
                    379: 	&Apache::lonxml::debug(" usining out $dim 's  ". $dimension{$dim}{'result'});
1.173     albertel  380: 	return $dimension{$dim}{'result'};
                    381:     }
                    382:     return $result;
                    383: }
                    384: 
1.54      albertel  385: sub internal_location {
                    386:     my ($id)=@_;
                    387:     return '<!-- LONCAPA_INTERNAL_ADD_TASK_STATUS'.$id.' -->';
                    388: }
                    389: 
1.60      albertel  390: sub submission_time_stamp {
                    391:     my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
                    392:     my $submissiontime;
1.89      albertel  393:     my $version=$Apache::lonhomework::history{'resource.0.version'};
1.60      albertel  394:     for (my $v=$Apache::lonhomework::history{'version'};$v>0;$v--) {
1.183   ! albertel  395: 	if (defined($Apache::lonhomework::history{$v.':resource.'.$version.'.0.bridgetask.portfiles'})
        !           396: 	    && defined($Apache::lonhomework::history{$v.':resource.'.$version.'.0.tries'})) {
1.60      albertel  397: 	    $submissiontime=$Apache::lonhomework::history{$v.':timestamp'};
1.182     albertel  398: 	    last;
1.60      albertel  399: 	}
                    400:     }
                    401:     my $result;
                    402:     if ($submissiontime) {
1.89      albertel  403: 	my $slot_name=$Apache::lonhomework::history{'resource.'.$version.'.0.checkedin.slot'};
1.60      albertel  404: 	my %slot=&Apache::lonnet::get_slot($slot_name);
                    405: 	my $diff = $slot{'endtime'} - $submissiontime;
1.71      albertel  406: 	my ($color,$when)=('#FF6666','after');
                    407: 	if ($diff > 0) { ($color,$when)=('#336600','before'); }
1.60      albertel  408: 	my $info;
1.182     albertel  409: 	$diff = abs($diff);
1.60      albertel  410: 	if ($diff%60) { $info=($diff%60).' seconds'; }
                    411: 	$diff=int($diff/60);
                    412: 	if ($diff%60) { $info=($diff%60).' minutes '.$info; }
                    413: 	$diff=int($diff/60);
                    414: 	if ($diff) {    $info=$diff.' hours '.$info; }
                    415: 	$result='<p><font color="'.$color.'">'.
1.182     albertel  416: 	    &mt('Student submitted [_1] [_2] the deadline. '.
                    417: 		'(Submission was at [_3], end of period was [_4].)',
                    418: 		$info,$when,
                    419: 		&Apache::lonlocal::locallocaltime($submissiontime),
                    420: 		&Apache::lonlocal::locallocaltime($slot{'endtime'})).
1.60      albertel  421: 		'</font></p>';
                    422:     }
                    423:     return $result;
                    424: }
                    425: 
1.119     albertel  426: sub file_list {
                    427:     my ($files,$uname,$udom) = @_;
                    428:     if (!defined($uname) || !defined($udom)) {
                    429: 	(undef,undef,$udom,$uname) = &Apache::lonxml::whichuser();
                    430:     }
1.70      albertel  431:     my $file_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio/';
1.119     albertel  432: 
1.120     albertel  433:     my $file_list="<ul class=\"LC_GRADING_handininfo\">\n";
1.119     albertel  434:     foreach my $partial_file (split(',',$files)) {
1.70      albertel  435: 	my $file=$file_url.$partial_file;
                    436: 	$file=~s|/+|/|g;
                    437: 	&Apache::lonnet::allowuploaded('/adm/bridgetask',$file);
1.161     albertel  438: 	$file_list.='<li><span style="white-space: nowrap;"><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.
                    439: 	    &Apache::loncommon::icon($file).'" alt="file icon" border="0" /> '.$file.
                    440: 	    '</a></span></li>'."\n";
1.70      albertel  441:     }
                    442:     $file_list.="</ul>\n";
1.119     albertel  443:     return $file_list;
                    444: }
                    445: 
1.163     albertel  446: sub grade_mode {
                    447:     if ($env{'form.regrade'} || $env{'form.regradeaspecificsubmission'}) {
                    448: 	return 'regrade';
                    449:     }
                    450:     return 'queue_grade';
                    451: }
                    452: 
1.119     albertel  453: sub webgrade_standard_info {
                    454:     my ($version)=&get_version();
                    455: 
                    456:     my $file_list = &file_list($Apache::lonhomework::history{"resource.$version.0.bridgetask.portfiles"});
1.70      albertel  457: 
1.163     albertel  458:     my %lt=('done'   => 'Next Item',
                    459: 	    'stop'   => 'Quit Grading',
                    460: 	    'fail'   => 'Fail Rest',
                    461: 	    'cancel' => 'Cancel',
                    462: 	    );
1.170     albertel  463:     %lt=&Apache::lonlocal::texthash(%lt);
1.163     albertel  464: 
1.70      albertel  465:     my $result=<<INFO;
1.120     albertel  466:   <div class="LC_GRADING_maincontrols">
1.163     albertel  467: INFO
                    468: 
                    469:     if (&grade_mode() eq 'regrade') {
                    470: 	$result.=<<INFO;
                    471:     <input type="submit" name="cancel" value="$lt{'cancel'}" />
                    472: INFO
                    473:     }
                    474: 
                    475:     $result.=<<INFO;
1.111     albertel  476:     <input type="submit" name="next" value="$lt{'done'}" />
                    477:     <input type="submit" name="stop" value="$lt{'stop'}" />
1.143     albertel  478:     <input type="button" name="fail" value="$lt{'fail'}" 
                    479:            onclick="javascript:onFailRest()" />
1.111     albertel  480:   </div>
1.70      albertel  481:   $file_list
                    482: INFO
                    483:     return $result;
                    484: }
                    485: 
1.166     albertel  486: sub done_screen {
                    487:     my ($version) = @_;
                    488:     my $title=&Apache::lonnet::gettitle();
                    489:     my @files=split(',',$Apache::lonhomework::history{'resource.'.$version.'.0.bridgetask.portfiles'});
                    490:     my (undef,undef,$domain,$user)= &Apache::lonxml::whichuser();
                    491:     my $files = '<ul>';
1.167     albertel  492:     my $msg;
1.166     albertel  493:     foreach my $file (@files) {
                    494: 	my $url="/uploaded/$domain/$user/portfolio$file";
                    495: 	if (! &Apache::lonnet::stat_file($url)) {
                    496: 	    $file = &mt('<span class="LC_error"> Nonexistent file:</span> '.
                    497: 			'<span class="LC_filename">[_1]</span>',$file);
1.167     albertel  498: 	    $msg .= "<p>Submitted non-existant file $file</p>\n";
1.166     albertel  499: 	} else {
                    500: 	    $file = '<span class="LC_filename">'.$file.'</span>';
1.167     albertel  501: 	    $msg .= "<p>Submitted file $file</p>\n";
1.166     albertel  502: 	}
                    503: 	$files .= '<li>'.$file.'</li>';
                    504:     }
                    505:     $files.='</ul>';
1.167     albertel  506:     my $subject = "Submission message for $title";
                    507:     my ($message_status,$comment_status);
                    508:     my $setting = $env{'course.'.$env{'request.course.id'}.'.task_messages'};
                    509:     $setting =~ s/^\s*(\S*)\s*$/$1/;
                    510:     $setting = lc($setting);
                    511:     if ($setting eq 'only_student'
                    512: 	|| $setting eq 'student_and_user_notes_screen') {
                    513: 	$message_status =
                    514: 	    &Apache::lonmsg::user_normal_msg($user,$domain,$subject,$msg);
                    515: 	$message_status = '<p>'.&mt('Message sent to user: [_1]',
                    516: 				    $message_status).' </p>';
                    517:     }
                    518:     if ($setting eq 'student_and_user_notes_screen') {
                    519: 	$comment_status = 
                    520: 	    &Apache::lonmsg::store_instructor_comment($subject.'<br />'.
                    521: 						      $msg,$user,$domain);
                    522: 	$comment_status = '<p>'.&mt('Message sent to instructor: [_1]',
                    523: 				    $comment_status).' </p>';
                    524:     }
1.166     albertel  525:     return <<DONESCREEN;
                    526: <h2>$title</h2>
                    527: <p> Files submitted: $files </p>
                    528: <p> You are now done with this Bridge Task </p>
                    529: <hr />
                    530: <p> <a href="/adm/logout">Logout</a> </p>
                    531: <p> <a href="/adm/roles">Change to a different course</a> </p>
1.167     albertel  532: $message_status
                    533: $comment_status
1.166     albertel  534: DONESCREEN
                    535: 
                    536: }
                    537: 
1.1       albertel  538: sub start_Task {
1.87      albertel  539:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.1       albertel  540: 
1.4       albertel  541:     my ($status,$accessmsg,$slot);
1.179     albertel  542:     &Apache::structuretags::init_problem_globals('Task');
1.16      albertel  543:     if ($target ne 'webgrade') {
                    544: 	&Apache::structuretags::initialize_storage();
                    545: 	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.74      albertel  546: 	if ($env{'request.state'} eq 'construct') {
                    547: 	    &Apache::structuretags::setup_rndseed($safeeval);
                    548: 	}
1.16      albertel  549:     } 
                    550: 
1.4       albertel  551:     $Apache::lonhomework::parsing_a_task=1;
1.141     albertel  552: 
                    553:     my $name;
                    554:     if ($target eq 'web' || $target eq 'webgrade') {
                    555: 	$name = &Apache::structuretags::get_resource_name($parstack,$safeeval);
                    556:     }
                    557: 
1.145     albertel  558:     my ($result,$form_tag_start);
                    559:     if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
                    560: 	|| $target eq 'edit') {
                    561: 	($result,$form_tag_start) =
                    562: 	    &Apache::structuretags::page_start($target,$token,$tagstack,
                    563: 					       $parstack,$parser,$safeeval,
1.146     albertel  564: 					       $name,&style($target));
1.145     albertel  565: 	$result .= '<div class="LC_task">'."\n";
                    566:     }
1.123     albertel  567: 
1.74      albertel  568:     if ($target eq 'web' && $env{'request.state'} ne 'construct') {
1.147     albertel  569: 	if ($Apache::lonhomework::queuegrade
                    570: 	    || $Apache::lonhomework::modifygrades) {
1.141     albertel  571: 	    $result.='<form name="gradesubmission" method="post" action="';
1.13      albertel  572: 	    my $uri=$env{'request.uri'};
                    573: 	    if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
1.141     albertel  574: 	    $result.=$uri.'">'.&add_grading_button()."</form>";
1.38      albertel  575: 	    my $symb=&Apache::lonnet::symbread();
1.40      albertel  576: 	    if (&Apache::lonnet::allowed('mgq',$env{'request.course.id'})) {
1.141     albertel  577: 		$result.='<form method="post" name="slotrequest" action="/adm/slotrequest">'.
1.40      albertel  578: 		    '<input type="hidden" name="symb" value="'.$symb.'" />'.
                    579: 		    '<input type="hidden" name="command" value="showslots" />'.
                    580: 		    '<input type="submit" name="requestattempt" value="'.
                    581: 		    &mt('Show Slot list').'" />'.
                    582: 		    '</form>';
1.108     albertel  583: 		my $target_id = 
                    584: 		    &Apache::lonstathelpers::make_target_id({symb => $symb,
                    585: 							     part => '0'});
1.141     albertel  586: 		$result.='<form method="post" name="gradingstatus" action="/adm/statistics">'.
1.108     albertel  587: 		    '<input type="hidden" name="problemchoice" value="'.$target_id.'" />'.
                    588: 		    '<input type="hidden" name="reportSelected" value="grading_analysis" />'.
                    589: 		    '<input type="submit" name="grading" value="'.
                    590: 		    &mt('Show Grading Status').'" />'.
                    591: 		    '</form>';
1.40      albertel  592: 	    }
1.13      albertel  593: 	}
1.8       albertel  594:     }
1.74      albertel  595:     if ($target eq 'web' && $env{'request.state'} eq 'construct') {
                    596: 	$form_tag_start.=&Apache::structuretags::problem_web_to_edit_header($env{'form.rndseed'});
                    597:     }
1.163     albertel  598:     if ($target eq 'web' 
                    599: 	|| ($target eq 'grade' && !$env{'form.webgrade'}) 
                    600: 	|| $target eq 'answer' 
                    601: 	|| $target eq 'tex') {
1.29      albertel  602: 	my ($version,$previous)=&get_version();
1.14      albertel  603: 	($status,$accessmsg,my $slot_name,$slot) = 
1.81      albertel  604: 	    &Apache::lonhomework::check_slot_access('0','Task');
1.152     albertel  605: 	if ($status eq 'CAN_ANSWER' && $version eq '') {
1.177     albertel  606: 	    # CAN_ANSWER mode, and no current version, unproctored access
1.174     albertel  607: 	    # thus self-checkedin
1.177     albertel  608: 	    &check_in('Task',undef,undef,$slot_name);
1.152     albertel  609: 	    &add_to_queue('gradingqueue',{'type' => 'Task',
                    610: 					  'time' => time,
                    611: 					  'slot' => $slot_name});
1.150     albertel  612: 	    ($version,$previous)=&get_version();
                    613: 	}
                    614: 
1.9       albertel  615: 	push(@Apache::inputtags::status,$status);
1.14      albertel  616: 	$Apache::inputtags::slot_name=$slot_name;
1.1       albertel  617: 	my $expression='$external::datestatus="'.$status.'";';
1.89      albertel  618: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$version.0.solved"}.'";';
1.1       albertel  619: 	&Apache::run::run($expression,$safeeval);
                    620: 	&Apache::lonxml::debug("Got $status");
1.141     albertel  621: 	$result.=&add_previous_version_button($status);
1.54      albertel  622: 	if (!&show_task($status,$previous)) {
1.87      albertel  623: 	    my $bodytext=&Apache::lonxml::get_all_text("/task",$parser,$style);
1.1       albertel  624: 	    if ( $target eq "web" ) {
1.74      albertel  625: 		if ($env{'request.state'} eq 'construct') {
                    626: 		    $result.=$form_tag_start;
                    627: 		}
1.4       albertel  628: 		my $msg;
1.1       albertel  629: 		if ($status eq 'UNAVAILABLE') {
                    630: 		    $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.3       albertel  631: 		} elsif ($status eq 'NOT_IN_A_SLOT') {
                    632: 		    $msg.='<h1>'.&mt('You are not currently signed up to work at this time and/or place.').'</h1>';
1.38      albertel  633: 		    $msg.=&add_request_another_attempt_button("Sign up for time to work.");
1.4       albertel  634: 		} elsif ($status eq 'NEEDS_CHECKIN') {
                    635: 		    $msg.='<h1>'.&mt('You need the Proctor to validate you.').
                    636: 			'</h1>'.&proctor_validation_screen($slot);
1.22      albertel  637: 		} elsif ($status eq 'WAITING_FOR_GRADE') {
                    638: 		    $msg.='<h1>'.&mt('Your submission is in the grading queue.').'</h1>';
1.64      albertel  639: 		} elsif ($env{'form.donescreen'}) {
1.167     albertel  640: 		    $result .= &done_screen($version);
1.1       albertel  641: 		} elsif ($status ne 'NOT_YET_VIEWED') {
                    642: 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
                    643: 		}
                    644: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
                    645: 		    $msg.='The problem '.$accessmsg;
                    646: 		}
                    647: 		$result.=$msg.'<br />';
                    648: 	    } elsif ($target eq 'tex') {
                    649: 		$result.='\begin{document}\noindent \vskip 1 mm  \begin{minipage}{\textwidth}\vskip 0 mm';
                    650: 		if ($status eq 'UNAVAILABLE') {
                    651: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
                    652: 		} else {
                    653: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
                    654: 		}
1.22      albertel  655: 	    } elsif ($target eq 'grade' && !$env{'form.webgrade'}) {
1.4       albertel  656: 		if ($status eq 'NEEDS_CHECKIN') {
1.83      albertel  657: 		    if(&proctor_check_auth($slot_name,$slot,'Task')
                    658: 		       && defined($Apache::inputtags::slot_name)) {
1.148     albertel  659: 			my $result=
                    660: 			    &add_to_queue('gradingqueue',
1.152     albertel  661: 					  {'type' => 'Task',
1.148     albertel  662: 					   'time' => time,
                    663: 					   'slot' => 
                    664: 					       $Apache::inputtags::slot_name});
1.77      albertel  665: 			&Apache::lonxml::debug("add_to_queue said $result");
                    666: 		    }
1.4       albertel  667: 		}
1.1       albertel  668: 	    }
                    669: 	} elsif ($target eq 'web') {
1.141     albertel  670: 
1.57      albertel  671: 	    $result.=&preserve_grade_info();
                    672: 	    $result.=&internal_location();
1.36      albertel  673: 	    $result.=$form_tag_start.
                    674: 		'<input type="hidden" name="submitted" value="yes" />';
1.54      albertel  675: 	    &Apache::lonxml::startredirection();
1.1       albertel  676: 	}
1.21      albertel  677:     } elsif ( ($target eq 'grade' && $env{'form.webgrade'}) ||
                    678: 	      $target eq 'webgrade') {
1.32      albertel  679: 	my $webgrade='yes';
1.21      albertel  680: 	if ($target eq 'webgrade') {
1.141     albertel  681: 	    $result.= "\n".'<div class="LC_GRADING_task">'."\n".
1.124     albertel  682: 		'<script type="text/javascript" 
1.126     albertel  683:                          src="/res/adm/includes/task_grading.js"></script>';
1.49      albertel  684: 	    #$result.='<br />Review'.&show_queue('reviewqueue');
                    685: 	    #$result.='<br />Grade'.&show_queue('gradingqueue');
1.30      albertel  686: 	}
1.33      albertel  687: 	# FIXME Blast! still need to reorg this, need to reshow the
                    688:         #       queue being reviewed once done with the grade pass...
                    689:         #       Hrrm, vaildation pass should perhaps say 'not_locked'
                    690:         #       perhaps do a search if there is a key that is mine and if
                    691:         #       there isn't reshow the queue....
1.105     albertel  692: 	my ($todo,$status_code,$msg)=&get_key_todo($target);
1.33      albertel  693: 
                    694: 	if ($todo) {
                    695: 	    &setup_env_for_other_user($todo,$safeeval);
                    696: 	    my ($symb,$uname,$udom)=&decode_queue_key($todo);
                    697: 	    $result.="\n".'<table><tr><td>Found '.
                    698: 		&Apache::lonnet::gettitle($symb).' for '.$uname.' at '.$udom.'</td></tr></table>';
                    699: 	    $form_tag_start.=
                    700: 		'<input type="hidden" name="gradingkey" value="'.
1.158     www       701: 		&escape($todo).'" />';
1.33      albertel  702: 	    $Apache::bridgetask::queue_key=$todo;
                    703: 	    &Apache::structuretags::initialize_storage();
                    704: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.110     albertel  705: 	    if ($target eq 'webgrade' && $status_code eq 'selected') {
                    706: 		$form_tag_start.=
                    707: 		    '<input type="hidden" name="queuemode" value="selected" />';
1.33      albertel  708: 	    }
1.15      albertel  709: 	} else {
1.33      albertel  710: 	    if ($target eq 'webgrade') {
                    711: 		$result.="\n";
1.81      albertel  712: 		my $back='<p><a href="/adm/flip?postdata=return:">'.
                    713: 		    &mt('Return to resource').'</a></p>';
1.33      albertel  714: 		if      ($status_code eq 'stop') {
1.81      albertel  715: 		    $result.='<b>'.&mt("Stopped grading.").'</b>'.$back;
1.163     albertel  716: 		} elsif ($status_code eq 'cancel') {
                    717: 		    $result.='<b>'.&mt("Cancelled grading.").'</b>'.$back;
1.164     albertel  718: 		} elsif ($status_code eq 'never_versioned') {
                    719: 		    $result.='<b>'.
                    720: 			&mt("Requested user has never accessed the task.").
                    721: 			'</b>'.$back;
1.165     albertel  722: 		} elsif ($status_code =~ /still_open:(.*)/) {
                    723: 		    my $date = &Apache::lonlocal::locallocaltime($1);
                    724: 		    $result.='<b>'.
                    725: 			&mt("Task is still open, will close at [_1].",$date).
                    726: 			'</b>'.$back;
1.33      albertel  727: 		} elsif ($status_code eq 'lock_failed') {
1.105     albertel  728: 		    $result.='<b>'.&mt("Failed to lock the requested record.")
1.81      albertel  729: 			.'</b>'.$back;
1.33      albertel  730: 		} elsif ($status_code eq 'unlock') {
1.81      albertel  731: 		    $result.='<b>'.&mt("Unlocked the requested record.")
                    732: 			.'</b>'.$back;
1.33      albertel  733: 		    $result.=&show_queue($env{'form.queue'},1);
                    734: 		} elsif ($status_code eq 'show_list') {
                    735: 		    $result.=&show_queue($env{'form.queue'},1);
1.49      albertel  736: 		} elsif ($status_code eq 'select_user') {
                    737: 		    $result.=&select_user();
1.95      albertel  738: 		} elsif ($status_code eq 'unable') {
                    739: 		    $result.='<b>'.&mt("Unable to aqcuire a user to grade.").'</b>'.$back;
1.105     albertel  740: 		} elsif ($status_code eq 'not_allowed') {
                    741: 		    $result.='<b>'.&mt('Not allowed to grade the requested user.').' '.$msg.'</b>'.$back;
1.33      albertel  742: 		} else {
1.81      albertel  743: 		    $result.='<b>'.&mt("No user to be graded.").'</b>'.$back;
1.32      albertel  744: 		}
1.21      albertel  745: 	    }
1.33      albertel  746: 	    $webgrade='no';
1.163     albertel  747: 	}
                    748: 	if (!$todo || $env{'form.cancel'}) {
1.87      albertel  749: 	    my $bodytext=&Apache::lonxml::get_all_text("/task",$parser,$style);
1.32      albertel  750: 	}
                    751: 	if ($target eq 'webgrade' && defined($env{'form.queue'})) {
1.61      albertel  752: 	    if ($webgrade eq 'yes') {
                    753: 		$result.=&submission_time_stamp();
                    754: 	    }
1.32      albertel  755: 	    $result.=$form_tag_start;
                    756: 	    $result.='<input type="hidden" name="webgrade" value="'.
                    757: 		$webgrade.'" />';
                    758: 	    $result.='<input type="hidden" name="queue" value="'.
                    759: 		$env{'form.queue'}.'" />';
1.52      albertel  760: 	    if ($env{'form.regrade'}) {
                    761: 		$result.='<input type="hidden" name="regrade" value="'.
                    762: 		    $env{'form.regrade'}.'" />';
                    763: 	    }
1.62      albertel  764: 	    if ($env{'form.chosensections'}) {
                    765: 		my @chosen_sections=
                    766: 		    &Apache::loncommon::get_env_multiple('form.chosensections');
                    767: 		foreach my $sec (@chosen_sections) {
                    768: 		    $result.='<input type="hidden" name="chosensections" 
                    769:                                value="'.$sec.'" />';
                    770: 		}
                    771: 	    }
1.70      albertel  772: 	    if ($webgrade eq 'yes') { $result.=&webgrade_standard_info(); }
1.15      albertel  773: 	}
1.110     albertel  774: 	if ($target eq 'webgrade') {
1.120     albertel  775: 	    $result.="\n".'<div id="LC_GRADING_criterialist">';
1.110     albertel  776: 	}
1.74      albertel  777:     } elsif ($target eq 'edit') {
1.141     albertel  778: 	$result.=$form_tag_start.
1.74      albertel  779: 	    &Apache::structuretags::problem_edit_header();
                    780: 	$Apache::lonxml::warnings_error_header=
                    781: 	    &mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";
                    782: 	my $temp=&Apache::edit::insertlist($target,$token);
                    783: 	$result.=$temp;
1.1       albertel  784:     } else {
                    785: 	# page_start returned a starting result, delete it if we don't need it
                    786: 	$result = '';
                    787:     }
                    788:     return $result;
                    789: }
                    790: 
1.165     albertel  791: sub get_task_end_time {
                    792:     my ($queue_entry,$symb,$udom,$uname) = @_;
                    793: 
                    794:     my $end_time;
                    795:     if (my $slot = &slotted_access($queue_entry)) {
                    796: 	my %slot_data=&Apache::lonnet::get_slot($slot);
                    797: 	$end_time = $slot_data{'endtime'};
                    798:     } else {
                    799: 	$end_time = &Apache::lonhomework::due_date('0',$symb,
                    800: 						   $udom,$uname);
                    801:     }
                    802:     return $end_time;
                    803: }
                    804: 
1.32      albertel  805: sub get_key_todo {
                    806:     my ($target)=@_;
                    807:     my $todo;
1.33      albertel  808: 
                    809:     if (defined($env{'form.reviewasubmission'})) {
1.54      albertel  810: 	&Apache::lonxml::debug("review a submission....");
1.33      albertel  811: 	$env{'form.queue'}='reviewqueue';
                    812: 	return (undef,'show_list');
                    813:     }
                    814: 
                    815:     if (defined($env{'form.reviewagrading'})) {
                    816: 	&Apache::lonxml::debug("review a grading....");
                    817: 	$env{'form.queue'}='gradingqueue';
                    818: 	return (undef,'show_list');
                    819:     }
                    820: 
1.49      albertel  821:     if (defined($env{'form.regradeasubmission'})) {
                    822: 	&Apache::lonxml::debug("regrade a grading....");
                    823: 	$env{'form.queue'}='none';
                    824: 	return (undef,'select_user');
                    825:     }
                    826: 
1.105     albertel  827: 
1.138     albertel  828:     my $me=$env{'user.name'}.':'.$env{'user.domain'};
1.105     albertel  829: 
                    830:     #need to try both queues..
                    831:     if (defined($env{'form.regradeaspecificsubmission'}) &&
                    832: 	defined($env{'form.gradinguser'})               &&
                    833: 	defined($env{'form.gradingdomain'})               ) {
                    834: 	my ($symb,$cid)=&Apache::lonxml::whichuser();
                    835: 	my $cnum  = $env{'course.'.$cid.'.num'};
                    836: 	my $cdom  = $env{'course.'.$cid.'.domain'};
                    837: 	my $uname = $env{'form.gradinguser'};
                    838: 	my $udom  = $env{'form.gradingdomain'};
                    839: 
                    840: 	my $gradingkey=&encode_queue_key($symb,$udom,$uname);
                    841: 
                    842: 	my $queue;
                    843: 
                    844: 	if      (&in_queue('gradingqueue',$symb,$cdom,$cnum,$udom,$uname)) {
                    845: 	    $env{'form.queue'} = $queue = 'gradingqueue';
                    846: 	} elsif (&in_queue('reviewqueue' ,$symb,$cdom,$cnum,$udom,$uname)) {
                    847: 	    $env{'form.queue'} = $queue = 'reviewqueue';
                    848: 	}
                    849: 	
                    850: 	if (!$queue) {
                    851: 	    $env{'form.queue'} = $queue = 'none';
                    852: 	    #not queued so doing either a re or pre grade
1.164     albertel  853: 	    my %status = &Apache::lonnet::restore($symb,$cid,$udom,$uname);
                    854: 	    if ($status{'resource.0.version'} < 1) {
                    855: 		return (undef,'never_versioned');
                    856: 	    }
1.105     albertel  857: 	    return ($gradingkey);
                    858: 	}
                    859: 
1.165     albertel  860: 	if ($queue) {
                    861: 	    my $queue_entry = &get_queue_data($queue,$udom,$uname);
                    862: 	
                    863: 	    my $end_time = &get_task_end_time($queue_entry,$symb,
                    864: 					      $udom,$uname);
                    865: 	    if ($end_time > time) {
                    866: 		return (undef,"still_open:$end_time");
                    867: 	    }
                    868: 	}
                    869: 
1.105     albertel  870: 	my $who=&queue_key_locked($queue,$gradingkey);
                    871: 	if ($who eq $me) {
                    872: 	    #already have the lock
1.158     www       873: 	    $env{'form.gradingkey'}=&escape($gradingkey);
1.163     albertel  874: 	    &Apache::lonxml::debug("already locked");
1.105     albertel  875: 	    return ($gradingkey);
                    876: 	}
                    877: 	
                    878: 	if (!defined($who)) {
                    879: 	    if (&lock_key($queue,$gradingkey)) {
1.163     albertel  880: 		&Apache::lonxml::debug("newly locked");
1.105     albertel  881: 		return ($gradingkey);
                    882: 	    } else {
                    883: 		return (undef,'lock_failed');
                    884: 	    }
                    885: 	}
                    886: 
                    887: 	#otherwise (defined($who) && $who ne $me) some else has it...
                    888: 	return (undef,'not_allowed',
                    889: 		&mt('Another user ([_1]) currently has the record for [_2] locked.',
1.138     albertel  890: 		    $who,$env{'form.gradinguser'}.':'.$env{'form.gradingdomain'}));
1.105     albertel  891:     }
                    892: 
                    893: 
1.32      albertel  894:     my $queue=$env{'form.queue'};
1.33      albertel  895: 
1.32      albertel  896:     if (!defined($queue)) {
                    897: 	$env{'form.queue'}=$queue='gradingqueue';
                    898:     }
1.33      albertel  899: 
1.158     www       900:     my $gradingkey=&unescape($env{'form.gradingkey'});
1.33      albertel  901: 
1.49      albertel  902:     if ($env{'form.queue'} eq 'none') {
                    903: 	if (defined($env{'form.gradingkey'})) {
                    904: 	    if ($target eq 'webgrade') {
                    905: 		if ($env{'form.stop'}) {
                    906: 		    return (undef,'stop');
1.163     albertel  907: 		} elsif ($env{'form.cancel'}) {
                    908: 		    return (undef,'cancel');
1.49      albertel  909: 		} elsif ($env{'form.next'}) {
1.59      albertel  910: 		    return (undef,'select_user');
1.49      albertel  911: 		}
                    912: 	    }
                    913: 	    return ($gradingkey,'selected');
                    914: 	} else {
1.59      albertel  915: 	    return (undef,'select_user');
1.49      albertel  916: 	}
                    917:     }
1.32      albertel  918:     if (defined($env{'form.queue'}) && defined($env{'form.gradingkey'})
1.33      albertel  919: 	&& !defined($env{'form.gradingaction'}) 
                    920: 	&& $env{'form.queuemode'} eq 'selected') {
                    921: 	
                    922: 	my $who=&queue_key_locked($queue,$gradingkey);
                    923: 	if ($who eq $me) {
                    924: 	    &Apache::lonxml::debug("Found a key was given to me");
                    925: 	    return ($gradingkey,'selected');
                    926: 	} else {
                    927: 	    return (undef,'show_list');
                    928: 	}
                    929: 
                    930:     }
                    931: 
                    932:     if ($target eq 'webgrade' && $env{'form.queuemode'} eq 'selected') {
                    933: 	if ($env{'form.gradingaction'} eq 'resume') {
                    934: 	    delete($env{'form.gradingaction'});
                    935: 	    &Apache::lonxml::debug("Resuming a key");
1.32      albertel  936: 	    return ($gradingkey);
1.33      albertel  937: 	} elsif ($env{'form.gradingaction'} eq 'unlock') {
                    938: 	    &Apache::lonxml::debug("Unlocking a key ".
                    939: 				     &check_queue_unlock($queue,$gradingkey,1));
                    940: 	    return (undef,'unlock');
                    941: 	} elsif ($env{'form.gradingaction'} eq 'select') {
                    942: 	    &Apache::lonxml::debug("Locking a key");
                    943: 	    if (&lock_key($queue,$gradingkey)) {
                    944: 		&Apache::lonxml::debug("Success $queue");
                    945: 		return ($gradingkey);
                    946: 	    }
                    947: 	    &Apache::lonxml::debug("Failed $queue");
                    948: 	    return (undef,'lock_failed');
1.32      albertel  949: 	}
                    950:     }
1.33      albertel  951: 
                    952:     if ($env{'form.queuemode'} ne 'selected') {
                    953: 	# don't get something new from the queue if they hit the stop button
1.163     albertel  954:     	if (!(($env{'form.cancel'} || $env{'form.stop'}) 
                    955: 	      && $target eq 'webgrade') 
1.33      albertel  956: 	    && !$env{'form.gradingaction'}) {
                    957: 	    &Apache::lonxml::debug("Getting anew $queue");
                    958: 	    return (&get_from_queue($queue));
                    959: 	} else {
                    960: 	    return (undef,'stop');
                    961: 	}
1.32      albertel  962:     }
1.33      albertel  963:     return (undef,undef)
1.32      albertel  964: }
1.94      albertel  965: 
                    966: sub minimize_storage {
                    967:     foreach my $key (keys(%Apache::lonhomework::results)) {
                    968: 	if ($key =~ /regrader$/) { next; }
                    969: 	if ($Apache::lonhomework::results{$key} eq
                    970: 	    $Apache::lonhomework::history{$key}) {
                    971: 	    delete($Apache::lonhomework::results{$key});
                    972: 	}
                    973:     }
                    974: }
                    975: 
1.1       albertel  976: sub end_Task {
                    977:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    978:     my $result='';
                    979:     my $status=$Apache::inputtags::status['-1'];
1.29      albertel  980:     my ($version,$previous)=&get_version();
1.1       albertel  981:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
1.15      albertel  982: 	$target eq 'tex') {
1.69      albertel  983: 	if ($target eq 'web' || $target eq 'answer' || $target eq 'tex') {
1.1       albertel  984: 	    if ($target eq 'web') {
1.54      albertel  985: 		if (&show_task($status,$previous)) {
                    986: 		    $result.=&Apache::lonxml::endredirection();
                    987: 		}
1.64      albertel  988: 		if ($status eq 'CAN_ANSWER' && !$previous && 
                    989: 		    !$env{'form.donescreen'}) {
1.15      albertel  990: 		    $result.="\n".'<table border="1">'.
1.28      albertel  991: 			&Apache::inputtags::file_selector("$version.0",
                    992: 							  "bridgetask","*",
1.46      albertel  993: 							  'portfolioonly',
                    994: 							  '
                    995: <h2>'.&mt('Submit Portfolio Files for Grading').'</h2>
                    996: <p>'.&mt('Indicate the files from your portfolio to be evaluated in grading this task.').'</p>').
1.9       albertel  997: 							  "</table>";
1.77      albertel  998: 		}
1.78      albertel  999: 		if (!$previous && $status ne 'SHOW_ANSWER' &&
                   1000: 		    &show_task($status,$previous)) {
1.9       albertel 1001: 		    $result.=&Apache::inputtags::gradestatus('0');
1.64      albertel 1002: 		    $result.='</form>';
1.116     albertel 1003: 		    my $action = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.64      albertel 1004: 		    $result.=<<DONEBUTTON;
1.115     albertel 1005: <form name="done" method="post" action="$action">
1.64      albertel 1006:    <input type="hidden" name="donescreen" value="1" />
                   1007:    <input type="submit" value="Done" />
                   1008: </form>
                   1009: DONEBUTTON
1.77      albertel 1010:                 }
1.56      albertel 1011: 		if (&show_task($status,$previous) &&
1.89      albertel 1012: 		    $Apache::lonhomework::history{"resource.$version.0.status"} =~ /^(pass|fail)$/) {
                   1013: 		    my $bt_status=$Apache::lonhomework::history{"resource.$version.0.status"};
1.54      albertel 1014: 		    my $title=&Apache::lonnet::gettitle();
1.80      albertel 1015: 
1.149     albertel 1016: 		    my $start_time;
                   1017: 
1.80      albertel 1018: 		    my $slot_name=
1.89      albertel 1019: 			$Apache::lonhomework::history{"resource.$version.0.checkedin.slot"};
1.149     albertel 1020: 		    if ($slot_name) {
                   1021: 			my %slot=&Apache::lonnet::get_slot($slot_name);
                   1022: 
                   1023: 			$start_time=$slot{'starttime'}
                   1024: 		    } else {
                   1025: 			$start_time= 
                   1026: 			    &Apache::lonnet::EXT('resource.0.opendate');
                   1027: 		    }
                   1028: 		    $start_time=&Apache::lonlocal::locallocaltime($start_time);
1.54      albertel 1029: 
1.116     albertel 1030: 		    my $status = "\n<div class='LC_$bt_status LC_criteria'>\n";
1.54      albertel 1031: 		    
                   1032: 		    if ($bt_status eq 'pass')  {
                   1033: 			$status.='<h2>You passed the '.$title.' given on '.
1.80      albertel 1034: 			    $start_time.'</h2>';
1.54      albertel 1035: 		    }
                   1036: 		    if ($bt_status eq 'fail')  {
                   1037: 			$status.='<h2>You did not pass the '.$title.' given on '.
1.80      albertel 1038: 			    $start_time.'</h2>';
1.54      albertel 1039: 			if (!$previous) {
                   1040: 			    $status.=&add_request_another_attempt_button();
                   1041: 			}
                   1042: 		    }
                   1043: 		    my $man_count=0;
                   1044: 		    my $opt_count=0;
                   1045: 		    my $opt_passed=0;
1.168     albertel 1046: 		    foreach my $dim (keys(%Apache::bridgetask::top_dimensionlist)) {
                   1047: 			if ($Apache::bridgetask::top_dimensionlist{$dim}{'manadatory'}
1.54      albertel 1048: 			    eq 'N') {
                   1049: 			    $opt_count++;
1.168     albertel 1050: 			    if ($Apache::lonhomework::history{"resource.$version.0.$dim.status"} eq 'pass') {
1.54      albertel 1051: 				$opt_passed++;
                   1052: 			    }
                   1053: 			} else {
                   1054: 			    $man_count++;
                   1055: 			}
                   1056: 		    }
1.151     albertel 1057: 		    
1.54      albertel 1058: 		    my $opt_req=&Apache::lonxml::get_param('OptionalRequired',
                   1059: 							 $parstack,$safeeval);
                   1060: 		    if ($opt_req !~ /\S/) { $opt_req='0'; }
1.99      albertel 1061: 		    $status.="\n<p>".&mt('You needed to pass all of the [_1]  mandatory components and [_2] of the [_3] optional components, of which you passed [_4].',$man_count,$opt_req,$opt_count,$opt_passed)."</p></div>\n";
1.54      albertel 1062: 
                   1063: 		    my $internal_location=&internal_location();
                   1064: 		    $result=~s/\Q$internal_location\E/$status/;
                   1065: 		}
1.142     albertel 1066: 		$result.="\n</div>\n".
                   1067: 		    &Apache::loncommon::end_page({'discussion' => 1});
1.1       albertel 1068: 	    }
                   1069: 	}
1.181     albertel 1070: 
                   1071: 	my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
                   1072: 	my %queue_data = ('type' => 'Task',
                   1073: 			  'time' => time,);
                   1074: 	if (defined($Apache::inputtags::slot_name)) {
                   1075: 	    $queue_data{'slot'} = $Apache::inputtags::slot_name;
                   1076: 	} elsif (defined($Apache::lonhomework::history{"resource.$version.0.checkedin.slot"})) {
                   1077: 	    $queue_data{'slot'} = $Apache::lonhomework::history{"resource.$version.0.checkedin.slot"};
                   1078: 	}
                   1079: 	
                   1080: 
1.29      albertel 1081: 	if ($target eq 'grade' && !$env{'form.webgrade'} && !$previous) {
1.12      albertel 1082: 	    my $award='SUBMITTED';
1.28      albertel 1083: 	    &Apache::essayresponse::file_submission("$version.0",'bridgetask',
1.20      albertel 1084: 						    'portfiles',\$award);
1.14      albertel 1085: 	    if ($award eq 'SUBMITTED' &&
1.28      albertel 1086: 		$Apache::lonhomework::results{"resource.$version.0.bridgetask.portfiles"}) {
                   1087: 		$Apache::lonhomework::results{"resource.0.tries"}=
                   1088: 		    $Apache::lonhomework::results{"resource.$version.0.tries"}=
                   1089: 		    1+$Apache::lonhomework::history{"resource.$version.0.tries"};
                   1090: 
                   1091: 		$Apache::lonhomework::results{"resource.0.award"}=
                   1092: 		    $Apache::lonhomework::results{"resource.$version.0.award"}=
                   1093: 		    $award;
1.51      albertel 1094: 		$Apache::lonhomework::results{"resource.0.submission"}=
                   1095: 		    $Apache::lonhomework::results{"resource.$version.0.submission"}='';
1.64      albertel 1096: 	    } else {
                   1097: 		delete($Apache::lonhomework::results{"resource.$version.0.bridgetask.portfiles"});
1.77      albertel 1098: 		$award = '';
1.10      albertel 1099: 	    }
1.4       albertel 1100: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                   1101: 	    &Apache::structuretags::finalize_storage();
1.148     albertel 1102: 	    if ($award eq 'SUBMITTED') {
1.181     albertel 1103: 		&add_to_queue('gradingqueue',\%queue_data);
1.14      albertel 1104: 	    }
1.79      albertel 1105: 	} elsif ($Apache::lonhomework::results{'INTERNAL_store'}) {
                   1106: 	    &Apache::structuretags::finalize_storage();
1.1       albertel 1107: 	}
1.163     albertel 1108: 	if ($target eq 'grade' && $env{'form.webgrade'} eq 'yes' 
                   1109: 	    && exists($env{'form.cancel'})) {
                   1110: 	    &check_queue_unlock($env{'form.queue'});
                   1111: 	    &Apache::lonxml::debug(" cancelled grading .".$env{'form.queue'});
                   1112: 	} elsif ($target eq 'grade' && $env{'form.webgrade'} eq 'yes' 
                   1113: 		 && !exists($env{'form.cancel'})) {
1.20      albertel 1114: 	    my $optional_required=
                   1115: 		&Apache::lonxml::get_param('OptionalRequired',$parstack,
                   1116: 					   $safeeval);
                   1117: 	    my $optional_passed=0;
                   1118: 	    my $mandatory_failed=0;
                   1119: 	    my $ungraded=0;
                   1120: 	    my $review=0;   
1.21      albertel 1121: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
1.168     albertel 1122: 	    foreach my $dim (keys(%Apache::bridgetask::top_dimensionlist)) {
1.20      albertel 1123: 		my $status=
1.168     albertel 1124: 		    $Apache::lonhomework::results{"resource.$version.0.$dim.status"};
1.20      albertel 1125: 		my $mandatory=
1.168     albertel 1126: 		    ($Apache::bridgetask::top_dimensionlist{$dim}{'manadatory'} ne 'N');
1.20      albertel 1127: 		if ($status eq 'pass') {
                   1128: 		    if (!$mandatory) { $optional_passed++; }
                   1129: 		} elsif ($status eq 'fail') {
                   1130: 		    if ($mandatory) { $mandatory_failed++; }
                   1131: 		} elsif ($status eq 'ungraded') {
                   1132: 		    $ungraded++;
                   1133: 		} elsif ($status eq 'review') {
                   1134: 		    $review++;
1.49      albertel 1135: 		} else {
                   1136: 		    $ungraded++;
                   1137: 		}
1.20      albertel 1138: 	    }
                   1139: 	    if ($optional_passed < $optional_required) {
                   1140: 		$mandatory_failed++;
                   1141: 	    }
1.168     albertel 1142: 	    &Apache::lonxml::debug("all dim ".join(':',keys(%Apache::bridgetask::top_dimensionlist))."results -> m_f $mandatory_failed o_p $optional_passed u $ungraded r $review");
1.89      albertel 1143: 	    $Apache::lonhomework::results{'resource.0.regrader'}=
1.138     albertel 1144: 		$env{'user.name'}.':'.$env{'user.domain'};
1.20      albertel 1145: 	    if ($review) {
1.89      albertel 1146: 		$Apache::lonhomework::results{"resource.$version.0.status"}='review';
1.33      albertel 1147: 		if ($env{'form.queue'} eq 'reviewqueue') {
                   1148: 		    &check_queue_unlock($env{'form.queue'});
                   1149: 		    &Apache::lonxml::debug(" still needs review not changing status.");
                   1150: 		} else {
1.181     albertel 1151: 		    if ($env{'form.queue'} ne 'none') {
                   1152: 			&move_between_queues($env{'form.queue'},'reviewqueue');
                   1153: 		    } else {
                   1154: 			&add_to_queue('reviewqueue',\%queue_data);
                   1155: 		    }
1.33      albertel 1156: 		}
1.20      albertel 1157: 	    } elsif ($ungraded) {
1.89      albertel 1158: 		$Apache::lonhomework::results{"resource.$version.0.status"}='ungraded';
1.181     albertel 1159: 		if ($env{'form.queue'} eq 'reviewqueue') {
1.33      albertel 1160: 		    &Apache::lonxml::debug("moving back.");
1.181     albertel 1161: 		    &move_between_queues($env{'form.queue'},
                   1162: 					 'gradingqueue');
                   1163: 		} elsif ($env{'form.queue'} eq 'none' ) {
                   1164: 		    &add_to_queue('gradingqueue',\%queue_data);	
1.33      albertel 1165: 		} else {
                   1166: 		    &check_queue_unlock($env{'form.queue'});
                   1167: 		}
1.20      albertel 1168: 	    } elsif ($mandatory_failed) {
1.89      albertel 1169: 		$Apache::lonhomework::results{"resource.$version.0.status"}='fail';
1.25      albertel 1170: 		$Apache::lonhomework::results{"resource.$version.0.solved"}='incorrect_by_override';
                   1171: 		$Apache::lonhomework::results{"resource.$version.0.award"}='INCORRECT';
                   1172: 		$Apache::lonhomework::results{"resource.$version.0.awarded"}='0';
1.39      albertel 1173: 		&remove_from_queue($env{'form.queue'}); 
                   1174: 
                   1175: 		my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1.52      albertel 1176: 		
                   1177: 		if ($env{'form.regrade'} ne 'yes') {
                   1178: 		    $Apache::lonhomework::results{"resource.$version.0.bridgetask.portfiles"}=
                   1179: 			$Apache::lonhomework::history{"resource.$version.0.bridgetask.portfiles"};
                   1180: 		    &Apache::grades::version_portfiles(
                   1181: 						       \%Apache::lonhomework::results,
                   1182: 						       ["$version.0.bridgetask"],$courseid,
                   1183: 						       $symb,$udom,$uname,
                   1184: 						       ["$version.0.bridgetask"]);
                   1185: 		}
1.20      albertel 1186: 	    } else {
1.89      albertel 1187: 		$Apache::lonhomework::results{"resource.$version.0.status"}='pass';
1.25      albertel 1188: 		$Apache::lonhomework::results{"resource.$version.0.solved"}='correct_by_override';
                   1189: 		$Apache::lonhomework::results{"resource.$version.0.award"}='EXACT_ANS';
                   1190: 		$Apache::lonhomework::results{"resource.$version.0.awarded"}='1';
1.32      albertel 1191: 		&remove_from_queue($env{'form.queue'});
1.39      albertel 1192: 
                   1193: 		my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1.52      albertel 1194: 		if ($env{'form.regrade'} ne 'yes') {
                   1195: 		    $Apache::lonhomework::results{"resource.$version.0.bridgetask.portfiles"}=
                   1196: 			$Apache::lonhomework::history{"resource.$version.0.bridgetask.portfiles"};
                   1197: 		    &Apache::grades::version_portfiles(
                   1198: 						       \%Apache::lonhomework::results,
                   1199: 						       ["$version.0.bridgetask"],$courseid,
                   1200: 						       $symb,$udom,$uname,
                   1201: 						       ["$version.0.bridgetask"]);
                   1202: 		}
1.20      albertel 1203: 	    }
1.89      albertel 1204: 	    $Apache::lonhomework::results{"resource.0.status"}=
                   1205: 		$Apache::lonhomework::results{"resource.$version.0.status"};
1.28      albertel 1206: 	    if (defined($Apache::lonhomework::results{"resource.$version.0.awarded"})) {
1.26      albertel 1207: 		$Apache::lonhomework::results{"resource.0.award"}=
1.50      albertel 1208: 		    $Apache::lonhomework::results{"resource.$version.0.award"};
1.26      albertel 1209: 		$Apache::lonhomework::results{"resource.0.awarded"}=
1.50      albertel 1210: 		    $Apache::lonhomework::results{"resource.$version.0.awarded"};
1.26      albertel 1211: 		$Apache::lonhomework::results{"resource.0.solved"}=
1.50      albertel 1212: 		    $Apache::lonhomework::results{"resource.$version.0.solved"};
1.25      albertel 1213: 	    }
1.94      albertel 1214: 	    &minimize_storage();
1.21      albertel 1215: 	    &Apache::structuretags::finalize_storage();
1.20      albertel 1216: 	}
1.15      albertel 1217:     } elsif ($target eq 'webgrade') {
1.131     albertel 1218: 	$result.="</div>";
1.20      albertel 1219: 	#$result.='<input type="submit" name="next" value="'.
                   1220: 	#    &mt('Save &amp; Next').'" /> ';
                   1221: 	#$result.='<input type="submit" name="end" value="'.
                   1222: 	#    &mt('Save &amp; Stop Grading').'" /> ';
                   1223: 	#$result.='<input type="submit" name="throwaway" value="'.
                   1224: 	#    &mt('Throw Away &amp; Stop Grading').'" /> ';
                   1225: 	#$result.='<input type="submit" name="save" value="'.
                   1226: 	#    &mt('Save Partial Grade and Continue Grading').'" /> ';
1.124     albertel 1227: 	$result.='</form>'."\n</div>\n</div>\n".
1.140     albertel 1228: 	    &Apache::loncommon::end_page();
1.1       albertel 1229:     } elsif ($target eq 'meta') {
1.70      albertel 1230: 	$result.=&Apache::response::meta_package_write('Task');
1.77      albertel 1231:         $result.=&Apache::response::meta_stores_write('solved','string',
                   1232: 						      'Problem Status');
                   1233: 	$result.=&Apache::response::meta_stores_write('tries','int_zeropos',
                   1234: 						      'Number of Attempts');
                   1235: 	$result.=&Apache::response::meta_stores_write('awarded','float',
                   1236: 						      'Partial Credit Factor');
                   1237: 	$result.=&Apache::response::meta_stores_write('status','string',
                   1238: 						      'Bridge Task Status');
1.182     albertel 1239:     } elsif ($target eq 'edit') {
                   1240: 	&Apache::structuretags::reset_problem_globals('Task');
                   1241: 	undef($Apache::lonhomework::parsing_a_task);
                   1242: 	return ('','no');
1.1       albertel 1243:     }
1.179     albertel 1244:     &Apache::structuretags::reset_problem_globals('Task');
1.4       albertel 1245:     undef($Apache::lonhomework::parsing_a_task);
1.1       albertel 1246:     return $result;
                   1247: }
                   1248: 
1.31      albertel 1249: sub move_between_queues {
                   1250:     my ($src_queue,$dest_queue)=@_;
1.49      albertel 1251:     my $cur_data;
                   1252:     if ($src_queue ne 'none') {
                   1253: 	$cur_data=&get_queue_data($src_queue);
                   1254: 	if (!$cur_data) { return 'not_exist'; }
                   1255:     } else {
                   1256: 	$cur_data = ['none'];
                   1257:     }
1.148     albertel 1258:     my $result=&add_to_queue($dest_queue,$cur_data);
1.31      albertel 1259:     if ($result ne 'ok') {
                   1260: 	return $result;
                   1261:     }
                   1262:     &check_queue_unlock($src_queue);
                   1263:     return &remove_from_queue($src_queue);
1.21      albertel 1264: }
                   1265: 
                   1266: sub check_queue_unlock {
1.32      albertel 1267:     my ($queue,$key,$allow_not_me)=@_;
1.49      albertel 1268:     if ($queue eq 'none') { return 'ok'; }
1.30      albertel 1269:     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
1.32      albertel 1270:     if (!defined($key)) {
1.138     albertel 1271: 	$key="$symb\0queue\0$uname:$udom";
1.32      albertel 1272:     }
1.30      albertel 1273:     my $cnum=$env{'course.'.$cid.'.num'};
                   1274:     my $cdom=$env{'course.'.$cid.'.domain'};
1.138     albertel 1275:     my $me=$env{'user.name'}.':'.$env{'user.domain'};
1.30      albertel 1276:     my $who=&queue_key_locked($queue,$key,$cdom,$cnum);
                   1277:     if  ($who eq $me) {
1.163     albertel 1278: 	&Apache::lonxml::debug("unlocking my own $who");
1.32      albertel 1279: 	return &Apache::lonnet::del($queue,["$key\0locked"],$cdom,$cnum);
                   1280:     } elsif ($allow_not_me) {
1.33      albertel 1281: 	&Apache::lonxml::debug("unlocking $who by $me");
1.32      albertel 1282: 	return &Apache::lonnet::del($queue,["$key\0locked"],$cdom,$cnum);
1.30      albertel 1283:     }
1.32      albertel 1284:     return 'not_owner';
1.21      albertel 1285: }
                   1286: 
1.88      albertel 1287: sub in_queue {
                   1288:     my ($queue,$symb,$cdom,$cnum,$udom,$uname)=@_;
                   1289:     if ($queue eq 'none') { return 0; }
                   1290:     if (!defined($symb) || !defined($cdom) || !defined($cnum)
                   1291: 	|| !defined($udom) || !defined($uname)) {
                   1292: 	($symb,my $cid,$udom,$uname)=&Apache::lonxml::whichuser();
                   1293: 	$cnum=$env{'course.'.$cid.'.num'};
                   1294: 	$cdom=$env{'course.'.$cid.'.domain'};
                   1295:     }
                   1296: 
                   1297:     my $key=&encode_queue_key($symb,$udom,$uname);
                   1298:     my %results = &Apache::lonnet::get($queue,[$key],$cdom,$cnum);
                   1299: 
                   1300:     if (defined($results{$key})) {
                   1301: 	return 1;
                   1302:     }
                   1303:     return 0;
                   1304: }
                   1305: 
1.21      albertel 1306: sub remove_from_queue {
1.86      albertel 1307:     my ($queue,$symb,$cdom,$cnum,$udom,$uname)=@_;
1.49      albertel 1308:     if ($queue eq 'none') { return 'ok'; }
1.86      albertel 1309:     if (!defined($symb) || !defined($cdom) || !defined($cnum)
                   1310: 	|| !defined($udom) || !defined($uname)) {
                   1311: 	($symb,my $cid,$udom,$uname)=&Apache::lonxml::whichuser();
                   1312: 	$cnum=$env{'course.'.$cid.'.num'};
                   1313: 	$cdom=$env{'course.'.$cid.'.domain'};
                   1314:     }
1.88      albertel 1315:     if (!&in_queue($queue,$symb,$cdom,$cnum,$udom,$uname)) {
                   1316: 	return 'ok';
                   1317:     }
1.86      albertel 1318:     my $key=&encode_queue_key($symb,$udom,$uname);
1.27      albertel 1319:     my @keys=($key,"$key\0locked");
1.31      albertel 1320:     return &Apache::lonnet::del($queue,\@keys,$cdom,$cnum);
1.21      albertel 1321: }
                   1322: 
1.16      albertel 1323: sub setup_env_for_other_user {
                   1324:     my ($queue_key,$safeeval)=@_;
                   1325:     my ($symb,$uname,$udom)=&decode_queue_key($queue_key);
1.30      albertel 1326:     &Apache::lonxml::debug("setup_env for $queue_key");
1.16      albertel 1327:     $env{'form.grade_symb'}=$symb;
                   1328:     $env{'form.grade_domain'}=$udom;
                   1329:     $env{'form.grade_username'}=$uname;
                   1330:     $env{'form.grade_courseid'}=$env{'request.course.id'};
                   1331:     &Apache::lonxml::initialize_rndseed($safeeval);
                   1332: }
                   1333: 
1.31      albertel 1334: sub get_queue_data {
1.165     albertel 1335:     my ($queue,$udom,$uname)=@_;
                   1336:     my ($symb,$cid,$other_udom,$other_uname)=&Apache::lonxml::whichuser();
                   1337:     if (!$uname || !$udom) {
                   1338: 	$uname=$other_uname;
                   1339: 	$udom =$other_udom;
                   1340:     }
1.31      albertel 1341:     my $cnum=$env{'course.'.$cid.'.num'};
                   1342:     my $cdom=$env{'course.'.$cid.'.domain'};
1.138     albertel 1343:     my $todo="$symb\0queue\0$uname:$udom";
1.31      albertel 1344:     my ($key,$value)=&Apache::lonnet::get($queue,[$todo],$cdom,$cnum);
                   1345:     if ($key eq $todo && ref($value)) {
                   1346: 	return $value;
                   1347:     }
                   1348:     return undef;
                   1349: }
                   1350: 
1.84      albertel 1351: 
1.49      albertel 1352: sub check_queue_for_key {
1.84      albertel 1353:     my ($cdom,$cnum,$queue,$todo)=@_;
                   1354: 
1.49      albertel 1355:     my %results=
                   1356: 	&Apache::lonnet::get($queue,[$todo,"$todo\0locked"],$cdom,$cnum);
                   1357:     
                   1358:     if (exists($results{$todo}) && ref($results{$todo})) {
                   1359: 	if (defined($results{"$todo\0locked"})) {
                   1360: 	    return 'locked';
                   1361: 	}
1.148     albertel 1362: 	if (my $slot=&slotted_access($results{$todo})) {
1.86      albertel 1363: 	    my %slot_data=&Apache::lonnet::get_slot($slot);
                   1364: 	    if ($slot_data{'endtime'} > time) { 
                   1365: 		return 'in_progress';
                   1366: 	    }
1.148     albertel 1367: 	} else {
                   1368: 	    my ($symb) = &decode_queue_key($todo);
                   1369: 	    my $due_date = &Apache::lonhomework::due_date('0',$symb);
                   1370: 	    if ($due_date > time) {
                   1371: 		return 'in_progress';
                   1372: 	    }
1.58      albertel 1373: 	}
1.49      albertel 1374: 	return 'enqueued';
                   1375:     }
                   1376:     return undef;
                   1377: }
                   1378: 
1.14      albertel 1379: sub add_to_queue {
1.82      albertel 1380:     my ($queue,$user_data)=@_;
1.49      albertel 1381:     if ($queue eq 'none') { return 'ok'; }
1.14      albertel 1382:     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
1.82      albertel 1383:     if (!$cid || $env{'request.state'} eq 'construct') {
                   1384: 	return 'no_queue';
                   1385:     }
1.14      albertel 1386:     my $cnum=$env{'course.'.$cid.'.num'};
                   1387:     my $cdom=$env{'course.'.$cid.'.domain'};
                   1388:     my %data;
1.138     albertel 1389:     $data{"$symb\0queue\0$uname:$udom"}=$user_data;
1.83      albertel 1390:     return &Apache::lonnet::cput($queue,\%data,$cdom,$cnum);
1.14      albertel 1391: }
                   1392: 
1.156     albertel 1393: sub get_limited_classlist {
                   1394:     my ($sections) = @_;
                   1395: 
                   1396:     my $classlist = &Apache::loncoursedata::get_classlist();
1.157     albertel 1397:     foreach my $student (keys(%$classlist)) {
                   1398: 	if ( $classlist->{$student}[&Apache::loncoursedata::CL_STATUS()]
                   1399: 	     ne 'Active') {
                   1400: 	    delete($classlist->{$student});
                   1401:        	}
                   1402:     }
1.156     albertel 1403: 
1.157     albertel 1404:     if (ref($sections) && !grep('all',@{ $sections })) {
1.156     albertel 1405: 	foreach my $student (keys(%$classlist)) {
                   1406: 	    my $section  = 
                   1407: 		$classlist->{$student}[&Apache::loncoursedata::CL_SECTION()];
                   1408: 	    if (! grep($section,@{ $sections })) {
                   1409: 		delete($classlist->{$student});
                   1410: 	    }
                   1411: 	}
                   1412:     }
                   1413:     return $classlist;
                   1414: }
                   1415: 
                   1416: 
1.14      albertel 1417: sub show_queue {
1.32      albertel 1418:     my ($queue,$with_selects)=@_;
1.14      albertel 1419:     my $result;
                   1420:     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
                   1421:     my $cnum=$env{'course.'.$cid.'.num'};
                   1422:     my $cdom=$env{'course.'.$cid.'.domain'};
1.59      albertel 1423: 
                   1424:     my @chosen_sections=
                   1425: 	&Apache::loncommon::get_env_multiple('form.chosensections');
1.156     albertel 1426: 
                   1427:     my $classlist = &get_limited_classlist(\@chosen_sections);
                   1428: 
1.63      albertel 1429:     if (!(grep(/^all$/,@chosen_sections))) {
                   1430: 	$result.='<p> Showing only sections <tt>'.join(', ',@chosen_sections).
                   1431: 	    '</tt>.</p> '."\n";
                   1432:     }
1.59      albertel 1433: 
1.156     albertel 1434:     my ($view,$view_section);
                   1435:     my $scope = $env{'request.course.id'};
                   1436:     if (!($view=&Apache::lonnet::allowed('vgr',$scope))) {
                   1437: 	$scope .= '/'.$env{'request.course.sec'};
                   1438: 	if ( $view = &Apache::lonnet::allowed('vgr',$scope)) {
                   1439: 	    $view_section=$env{'request.course.sec'};
                   1440: 	} else {
                   1441: 	    undef($view);
                   1442: 	}
                   1443:     }
                   1444: 
1.16      albertel 1445:     my $regexp="^$symb\0";
1.30      albertel 1446:     my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
1.31      albertel 1447:     my ($tmp)=%queue;
                   1448:     if ($tmp=~/^error: 2 /) {
1.159     albertel 1449: 	return "\n<h3>Current Queue - $queue</h3>".
                   1450: 	    &Apache::loncommon::start_data_table().
                   1451: 	    &Apache::loncommon::start_data_table_row().
                   1452: 	    '<td>'.&mt('Empty').'</td>'.
                   1453: 	    &Apache::loncommon::end_data_table_row().
                   1454: 	    &Apache::loncommon::end_data_table();
1.31      albertel 1455:     }
1.103     albertel 1456:     my $title=&Apache::lonnet::gettitle($symb);
1.159     albertel 1457:     $result.="\n<h3>Current Queue - $title $queue </h3>".
                   1458: 	&Apache::loncommon::start_data_table().
                   1459: 	&Apache::loncommon::start_data_table_header_row();
1.103     albertel 1460:     if ($with_selects) { $result.="<th>Status</th><th></th>"; }
1.159     albertel 1461:     $result.="<th>user</th><th>data</th>".
                   1462: 	&Apache::loncommon::end_data_table_header_row();
1.14      albertel 1463:     foreach my $key (sort(keys(%queue))) {
1.59      albertel 1464: 	my ($symb,$uname,$udom) = &decode_queue_key($key);
                   1465: 	if (!defined($classlist->{$uname.':'.$udom})) { next; }
1.156     albertel 1466: 	
                   1467: 	my $section = $classlist->{$uname.':'.$udom}[&Apache::loncoursedata::CL_SECTION()];
                   1468: 
                   1469: 	my $can_view=1;
                   1470: 	if (!$view
                   1471: 	    || ($view_section && !$section)
                   1472: 	    || ($view_section && $section && ($view_section ne $section))) {
                   1473: 	    $can_view=0;
                   1474: 	}
                   1475: 
1.32      albertel 1476: 	if ($key=~/locked$/ && !$with_selects) {
1.159     albertel 1477: 	    $result.= &Apache::loncommon::start_data_table_row().
                   1478: 		"<td>$uname</td>";
1.103     albertel 1479: 	    $result.='<td>'.$queue{$key}.'</td></tr>';
1.32      albertel 1480: 	} elsif ($key=~/timestamp$/ && !$with_selects) {
1.159     albertel 1481: 	    $result.=&Apache::loncommon::start_data_table_row()."<td></td>";
1.103     albertel 1482: 	    $result.='<td>'.
1.16      albertel 1483: 		&Apache::lonlocal::locallocaltime($queue{$key})."</td></tr>";
1.32      albertel 1484: 	} elsif ($key!~/(timestamp|locked)$/) {
1.159     albertel 1485: 	    $result.= &Apache::loncommon::start_data_table_row();
1.148     albertel 1486: 	    my ($end_time,$slot_text);
                   1487: 	    if (my $slot=&slotted_access($queue{$key})) {
                   1488: 		my %slot_data=&Apache::lonnet::get_slot($slot);
                   1489: 		$end_time = $slot_data{'endtime'};
                   1490: 		$slot_text = &mt('Slot: [_1]',$slot);
                   1491: 	    } else {
                   1492: 		$end_time = &Apache::lonhomework::due_date('0',$symb);
                   1493: 		$slot_text = '';
                   1494: 	    }
1.32      albertel 1495: 	    if ($with_selects) {
1.158     www      1496: 		my $ekey=&escape($key);
1.103     albertel 1497: 		my ($action,$description,$status)=('select',&mt('Select'));
1.32      albertel 1498: 		if (exists($queue{"$key\0locked"})) {
1.138     albertel 1499: 		    my $me=$env{'user.name'}.':'.$env{'user.domain'};
1.103     albertel 1500: 		    $status=&mt('Locked by <tt>[_1]</tt>',$queue{"$key\0locked"});
1.32      albertel 1501: 		    if ($me eq $queue{"$key\0locked"}) {
                   1502: 			($action,$description)=('resume',&mt('Resume'));
                   1503: 		    } else {
                   1504: 			($action,$description)=('unlock',&mt('Unlock'));
                   1505: 		    }
                   1506: 		}
1.62      albertel 1507: 		my $seclist;
                   1508: 		foreach my $sec (@chosen_sections) {
                   1509: 		    $seclist.='<input type="hidden" name="chosensections" 
                   1510:                                value="'.$sec.'" />';
                   1511: 		}
1.156     albertel 1512: 		if ($can_view && ($end_time ne '' && time > $end_time)) {
1.35      albertel 1513: 		    $result.=(<<FORM);
1.103     albertel 1514: <td>$status</td>
1.32      albertel 1515: <td>
1.115     albertel 1516: <form style="display: inline" method="post">
1.32      albertel 1517:  <input type="hidden" name="gradingkey" value="$ekey" />
                   1518:  <input type="hidden" name="queue" value="$queue" />
                   1519:  <input type="hidden" name="gradingaction" value="$action" />
                   1520:  <input type="hidden" name="webgrade" value="no" />
1.33      albertel 1521:  <input type="hidden" name="queuemode" value="selected" />
1.32      albertel 1522:  <input type="submit" name="submit" value="$description" />
1.62      albertel 1523:  $seclist
1.32      albertel 1524: </form>
                   1525: </td>
                   1526: FORM
1.156     albertel 1527:                 } elsif (!$can_view && ($end_time ne '' && time > $end_time)) {
                   1528: 		    $result.='<td>'.&mt("Not gradable").'</td><td>&nbsp;</td>'
1.35      albertel 1529:                 } else {
1.148     albertel 1530: 		    $result.='<td>'.&mt("In Progress").'</td><td>&nbsp;</td>'
1.35      albertel 1531: 		}
1.32      albertel 1532: 	    }
1.156     albertel 1533: 	    $result.= "<td>".$classlist->{$uname.':'.$udom}[&Apache::loncoursedata::CL_FULLNAME()].
1.138     albertel 1534: 		" <tt>($uname:$udom)</tt> </td>";
1.148     albertel 1535: 	    $result.='<td>'.$slot_text.' End time: '.
                   1536: 		&Apache::lonlocal::locallocaltime($end_time).
1.159     albertel 1537: 		"</td>".&Apache::loncommon::end_data_table_row();
1.16      albertel 1538: 	}
1.14      albertel 1539:     }
1.159     albertel 1540:     $result.= &Apache::loncommon::end_data_table()."<hr />\n";
1.14      albertel 1541:     return $result;
                   1542: }
                   1543: 
1.34      albertel 1544: sub get_queue_counts {
                   1545:     my ($queue)=@_;
                   1546:     my $result;
                   1547:     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
                   1548:     my $cnum=$env{'course.'.$cid.'.num'};
                   1549:     my $cdom=$env{'course.'.$cid.'.domain'};
1.156     albertel 1550: 
1.157     albertel 1551:     my $classlist=&get_limited_classlist();
1.156     albertel 1552: 
1.34      albertel 1553:     my $regexp="^$symb\0";
                   1554:     my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
                   1555:     my ($tmp)=%queue;
                   1556:     if ($tmp=~/^error: 2 /) {
                   1557: 	return (0,0,0);
                   1558:     }
                   1559:     my ($entries,$ready_to_grade,$locks)=(0,0,0);
1.96      albertel 1560:     my %slot_cache;
1.34      albertel 1561:     foreach my $key (sort(keys(%queue))) {
1.156     albertel 1562: 	my ($symb,$uname,$udom) = &decode_queue_key($key);
                   1563: 	if (!defined($classlist->{$uname.':'.$udom})) { next; }
                   1564: 
1.34      albertel 1565: 	if ($key=~/locked$/) {
                   1566: 	    $locks++;
                   1567: 	} elsif ($key=~/timestamp$/) {
                   1568: 	    #ignore
                   1569: 	} elsif ($key!~/(timestamp|locked)$/) {
                   1570: 	    $entries++;
1.148     albertel 1571: 	    if (my $slot=&slotted_access($queue{$key})) {
                   1572: 		if (!exists($slot_cache{$slot})) {
                   1573: 		    my %slot_data=&Apache::lonnet::get_slot($slot);
                   1574: 		    $slot_cache{$slot} = \%slot_data;
                   1575: 		}
                   1576: 		if (time > $slot_cache{$slot}{'endtime'}) {
                   1577: 		    $ready_to_grade++;
                   1578: 		}
                   1579: 	    } else {
                   1580: 		my $due_date = &Apache::lonhomework::due_date('0',$symb);
                   1581: 		if ($due_date ne '' && time > $due_date) {
                   1582: 		    $ready_to_grade++;
                   1583: 		}
1.34      albertel 1584: 	    }
                   1585: 	}
                   1586:     }
                   1587:     return ($entries,$ready_to_grade,$locks);
                   1588: }
                   1589: 
1.49      albertel 1590: sub encode_queue_key {
                   1591:     my ($symb,$udom,$uname)=@_;
1.138     albertel 1592:     return "$symb\0queue\0$uname:$udom";
1.49      albertel 1593: }
                   1594: 
1.14      albertel 1595: sub decode_queue_key {
                   1596:     my ($key)=@_;
                   1597:     my ($symb,undef,$user) = split("\0",$key);
1.138     albertel 1598:     my ($uname,$udom) = split(':',$user);
1.14      albertel 1599:     return ($symb,$uname,$udom);
                   1600: }
                   1601: 
                   1602: sub queue_key_locked {
1.30      albertel 1603:     my ($queue,$key,$cdom,$cnum)=@_;
1.33      albertel 1604:     if (!defined($cdom) || !defined($cnum)) {
                   1605: 	my (undef,$cid)=&Apache::lonxml::whichuser();
                   1606: 	$cnum=$env{'course.'.$cid.'.num'};
                   1607: 	$cdom=$env{'course.'.$cid.'.domain'};
                   1608:     }
1.14      albertel 1609:     my ($key_locked,$value)=
1.30      albertel 1610: 	&Apache::lonnet::get($queue,["$key\0locked"],$cdom,$cnum);
1.14      albertel 1611:     if ($key_locked eq "$key\0locked") {
                   1612: 	return $value;
                   1613:     }
                   1614:     return undef;
                   1615: }
                   1616: 
1.148     albertel 1617: sub slotted_access {
                   1618:     my ($queue_entry) = @_;
                   1619:     if (ref($queue_entry) eq 'ARRAY') {
                   1620: 	if (defined($queue_entry->[0])) {
                   1621: 	    return $queue_entry->[0];
                   1622: 	}
                   1623: 	return undef;
                   1624:     } elsif (ref($queue_entry) eq 'HASH') {
                   1625: 	if (defined($queue_entry->{'slot'})) {
                   1626: 	    return $queue_entry->{'slot'};
                   1627: 	}
                   1628: 	return undef;
                   1629:     }
                   1630:     return undef;
                   1631: }
                   1632: 
1.14      albertel 1633: sub pick_from_queue_data {
1.156     albertel 1634:     my ($queue,$check_section,$queuedata,$cdom,$cnum,$classlist)=@_;
1.98      albertel 1635:     my @possible; # will hold queue entries that are valid to be selected
1.30      albertel 1636:     foreach my $key (keys(%$queuedata)) {
1.68      albertel 1637: 	if ($key =~ /\0locked$/) { next; }
                   1638: 	if ($key =~ /\0timestamp$/) { next; }
1.156     albertel 1639: 
1.14      albertel 1640: 	my ($symb,$uname,$udom)=&decode_queue_key($key);
1.156     albertel 1641: 	if (!defined($classlist->{$uname.':'.$udom})) { next; }
                   1642: 
1.14      albertel 1643: 	if ($check_section) {
1.156     albertel 1644: 	    my $section =
                   1645: 		$classlist->{$uname.':'.$udom}[&Apache::loncoursedata::CL_SECTION()];
1.17      albertel 1646: 	    if ($section eq $check_section) {
1.33      albertel 1647: 		&Apache::lonxml::debug("my sec");
1.15      albertel 1648: 		next;
                   1649: 	    }
1.14      albertel 1650: 	}
1.148     albertel 1651: 	my $end_time;
                   1652: 	if (my $slot=&slotted_access($queuedata->{$key})) {
1.154     albertel 1653: 	    &Apache::lonxml::debug("looking at slot $slot");
1.148     albertel 1654: 	    my %slot_data=&Apache::lonnet::get_slot($slot);
                   1655: 	    if ($slot_data{'endtime'} < time) { 
                   1656: 		$end_time = $slot_data{'endtime'};
1.154     albertel 1657: 	    } else {
                   1658: 		&Apache::lonxml::debug("not time ".$slot_data{'endtime'});
                   1659: 		next;
1.148     albertel 1660: 	    }
                   1661: 	} else {
                   1662: 	    my $due_date = &Apache::lonhomework::due_date('0',$symb);
1.154     albertel 1663: 	    if ($due_date < time) {
1.148     albertel 1664: 		$end_time = $due_date;
1.154     albertel 1665: 	    } else {
                   1666: 		&Apache::lonxml::debug("not time $due_date");
                   1667: 		next;
1.148     albertel 1668: 	    }
                   1669: 	}
                   1670: 	
1.98      albertel 1671: 	if (exists($queuedata->{"$key\0locked"})) {
1.33      albertel 1672: 	    &Apache::lonxml::debug("someone already has um.");
1.15      albertel 1673: 	    next;
                   1674: 	}
1.148     albertel 1675: 	push(@possible,[$key,$end_time]);
1.98      albertel 1676:     }
                   1677:     if (@possible) {
                   1678:         # sort entries in order by slot end time
                   1679: 	@possible = sort { $a->[1] <=> $b->[1] } @possible;
1.137     albertel 1680: 	# pick one of the entries in the top 10% in small queues and one
                   1681: 	# of the first ten entries in large queues
1.139     albertel 1682: 	#my $ten_percent = int($#possible * 0.1);
                   1683: 	#if ($ten_percent < 1 ) { $ten_percent = 1;  }
                   1684: 	#if ($ten_percent > 10) { $ten_percent = 10; }
                   1685: 	#my $max=($#possible < $ten_percent) ? $#possible : $ten_percent;
1.137     albertel 1686: 	
1.139     albertel 1687: 	#return $possible[int(rand($max))][0];
                   1688: 	return $possible[0][0];
1.14      albertel 1689:     }
                   1690:     return undef;
                   1691: }
                   1692: 
1.15      albertel 1693: sub find_mid_grade {
1.30      albertel 1694:     my ($queue,$symb,$cdom,$cnum)=@_;
1.158     www      1695:     my $todo=&unescape($env{'form.gradingkey'});
1.138     albertel 1696:     my $me=$env{'user.name'}.':'.$env{'user.domain'};
1.15      albertel 1697:     if ($todo) {
1.30      albertel 1698: 	my $who=&queue_key_locked($queue,$todo,$cdom,$cnum);
1.15      albertel 1699: 	if ($who eq $me) { return $todo; }
                   1700:     }
                   1701:     my $regexp="^$symb\0.*\0locked\$";
1.30      albertel 1702:     my %locks=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
1.15      albertel 1703:     foreach my $key (keys(%locks)) {
                   1704: 	my $who=$locks{$key};
                   1705: 	if ($who eq $me) {
                   1706: 	    $todo=$key;
                   1707: 	    $todo=~s/\0locked$//;
                   1708: 	    return $todo;
                   1709: 	}
                   1710:     }
                   1711:     return undef;
                   1712: }
                   1713: 
1.32      albertel 1714: sub lock_key {
                   1715:     my ($queue,$todo)=@_;
1.138     albertel 1716:     my $me=$env{'user.name'}.':'.$env{'user.domain'};
1.32      albertel 1717:     my (undef,$cid)=&Apache::lonxml::whichuser();
                   1718:     my $cnum=$env{'course.'.$cid.'.num'};
                   1719:     my $cdom=$env{'course.'.$cid.'.domain'};
                   1720:     my $success=&Apache::lonnet::newput($queue,{"$todo\0locked"=> $me},
                   1721: 					$cdom,$cnum);
1.33      albertel 1722:     &Apache::lonxml::debug("success $success $todo");
1.32      albertel 1723:     if ($success eq 'ok') {
                   1724: 	return 1;
                   1725:     }
                   1726:     return 0;
                   1727: }
                   1728: 
1.86      albertel 1729: sub get_queue_symb_status {
1.85      albertel 1730:     my ($queue,$symb,$cdom,$cnum) = @_;
                   1731:     if (!defined($cdom) || !defined($cnum)) {
                   1732: 	my (undef,$cid)=&Apache::lonxml::whichuser();
                   1733: 	$cnum=$env{'course.'.$cid.'.num'};
                   1734: 	$cdom=$env{'course.'.$cid.'.domain'};
                   1735:     }
1.157     albertel 1736:     my $classlist=&get_limited_classlist();
1.156     albertel 1737: 
1.85      albertel 1738:     my $regexp="^$symb\0";
                   1739:     my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
                   1740:     my ($tmp)=%queue;
                   1741:     if ($tmp=~/^error: 2 /) { return; }
                   1742:     my @users;
                   1743:     foreach my $key (sort(keys(%queue))) {
                   1744: 	next if ($key=~/locked$/);
                   1745: 	next if ($key=~/timestamp$/);
                   1746: 	my ($symb,$uname,$udom) = &decode_queue_key($key);
1.156     albertel 1747: 	next if (!defined($classlist->{$uname.':'.$udom}));
1.85      albertel 1748: 	push(@users,"$uname:$udom");
                   1749:     }
                   1750:     return @users;
                   1751: }
                   1752: 
1.14      albertel 1753: sub get_from_queue {
1.30      albertel 1754:     my ($queue)=@_;
1.14      albertel 1755:     my $result;
                   1756:     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
                   1757:     my $cnum=$env{'course.'.$cid.'.num'};
                   1758:     my $cdom=$env{'course.'.$cid.'.domain'};
1.32      albertel 1759:     my $todo=&find_mid_grade($queue,$symb,$cdom,$cnum);
1.33      albertel 1760:     &Apache::lonxml::debug("found ".join(':',&decode_queue_key($todo)));
1.16      albertel 1761:     if ($todo) { return $todo; }
1.95      albertel 1762:     my $attempts=0;
1.156     albertel 1763: 
1.157     albertel 1764:     my $classlist=&get_limited_classlist();
1.156     albertel 1765: 
1.14      albertel 1766:     while (1) {
1.95      albertel 1767: 	if ($attempts > 2) {
                   1768: 	    # tried twice to get a queue entry, giving up
                   1769: 	    return (undef,'unable');
                   1770: 	}
1.14      albertel 1771: 	my $starttime=time;
1.83      albertel 1772: 	&Apache::lonnet::cput($queue,{"$symb\0timestamp"=>$starttime},
                   1773: 			      $cdom,$cnum);
1.33      albertel 1774: 	&Apache::lonxml::debug("$starttime");
1.14      albertel 1775: 	my $regexp="^$symb\0queue\0";
1.156     albertel 1776: 	#my $range= ($attempts < 1 ) ? '0-100' : '0-400';
1.97      albertel 1777: 
1.98      albertel 1778: 	my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
1.33      albertel 1779: 	#make a pass looking for a user _not_ in my section
1.14      albertel 1780: 	if ($env{'request.course.sec'}) {
1.33      albertel 1781: 	    &Apache::lonxml::debug("sce");
1.30      albertel 1782: 	    $todo=&pick_from_queue_data($queue,$env{'request.course.sec'},
1.156     albertel 1783: 					\%queue,$cdom,$cnum,$classlist);
1.33      albertel 1784: 	    &Apache::lonxml::debug("sce $todo");
1.14      albertel 1785: 	}
1.33      albertel 1786: 	# no one _not_ in our section so look for any user that is
                   1787: 	# ready for grading
1.14      albertel 1788: 	if (!$todo) {
1.33      albertel 1789: 	    &Apache::lonxml::debug("no sce");
1.156     albertel 1790: 	    $todo=&pick_from_queue_data($queue,undef,\%queue,$cdom,$cnum,
                   1791: 					$classlist);
1.33      albertel 1792: 	    &Apache::lonxml::debug("no sce $todo");
1.14      albertel 1793: 	}
                   1794: 	# no user to grade 
                   1795: 	if (!$todo) { last; }
1.33      albertel 1796: 	&Apache::lonxml::debug("got $todo");
1.14      albertel 1797: 	# otherwise found someone so lets try to lock them
1.32      albertel 1798: 	# unless someone else already picked them
1.95      albertel 1799: 	if (!&lock_key($queue,$todo)) {
                   1800: 	    $attempts++;
                   1801: 	    next;
                   1802: 	}
1.14      albertel 1803: 	my (undef,$endtime)=
1.30      albertel 1804: 	    &Apache::lonnet::get($queue,["$symb\0timestamp"],
1.14      albertel 1805: 				 $cdom,$cnum);
1.33      albertel 1806: 	&Apache::lonxml::debug("emd  $endtime");
1.14      albertel 1807: 	# someone else already modified the queue, 
                   1808: 	# perhaps our picked user wass already fully graded between
                   1809: 	# when we picked him and when we locked his record? so lets
                   1810: 	# double check.
                   1811: 	if ($endtime != $starttime) {
                   1812: 	    my ($key,$value)=
1.30      albertel 1813: 		&Apache::lonnet::get($queue,["$todo"],
1.14      albertel 1814: 				     $cdom,$cnum);
1.33      albertel 1815: 	    &Apache::lonxml::debug("check  $key .. $value");
1.14      albertel 1816: 	    if ($key eq $todo && ref($value)) {
                   1817: 	    } else {
1.30      albertel 1818: 		&Apache::lonnet::del($queue,["$todo\0locked"],
1.14      albertel 1819: 				     $cdom,$cnum);
1.33      albertel 1820: 		&Apache::lonxml::debug("del");
1.95      albertel 1821: 		$attempts++;
1.14      albertel 1822: 		next;
                   1823: 	    }
                   1824: 	}
1.33      albertel 1825: 	&Apache::lonxml::debug("last $todo");
1.14      albertel 1826: 	last;
                   1827:     }
                   1828:     return $todo;
                   1829: }
                   1830: 
1.49      albertel 1831: sub select_user {
                   1832:     my ($symb,$cid)=&Apache::lonxml::whichuser();
                   1833: 
1.59      albertel 1834:     my @chosen_sections=
                   1835: 	&Apache::loncommon::get_env_multiple('form.chosensections');
1.156     albertel 1836: 
                   1837:     my $classlist = &get_limited_classlist(\@chosen_sections);
1.63      albertel 1838:     
                   1839:     my $result;
                   1840:     if (!(grep(/^all$/,@chosen_sections))) {
                   1841: 	$result.='<p> Showing only sections <tt>'.join(', ',@chosen_sections).
                   1842: 	    '</tt>.</p> '."\n";
                   1843:     }
1.159     albertel 1844:     $result.=&Apache::loncommon::start_data_table();
1.49      albertel 1845: 
1.156     albertel 1846:     foreach my $student (sort {lc($classlist->{$a}[&Apache::loncoursedata::CL_FULLNAME()]) cmp lc($classlist->{$b}[&Apache::loncoursedata::CL_FULLNAME()]) } (keys(%$classlist))) {
1.49      albertel 1847: 	my ($uname,$udom) = split(/:/,$student);
1.59      albertel 1848: 	
1.84      albertel 1849: 	my $cnum=$env{'course.'.$cid.'.num'};
                   1850: 	my $cdom=$env{'course.'.$cid.'.domain'};
1.88      albertel 1851: 	my %status = &get_student_status($symb,$cdom,$cnum,$udom,$uname,
                   1852: 					 'Task');
1.49      albertel 1853: 	my $queue = 'none';
1.58      albertel 1854: 	my $cannot_grade;
                   1855: 	if ($status{'reviewqueue'} =~ /^(in_progress|enqueue)$/) {
1.49      albertel 1856: 	    $queue = 'reviewqueue';
1.58      albertel 1857: 	    if ($status{'reviewqueue'} eq 'in_progress') {
                   1858: 		$cannot_grade=1;
                   1859: 	    }
                   1860: 	} elsif ($status{'gradingqueue'} =~ /^(in_progress|enqueue)$/) {
1.49      albertel 1861: 	    $queue = 'gradingqueue';
1.58      albertel 1862: 	    if ($status{'gradingqueue'} eq 'in_progress') {
                   1863: 		$cannot_grade=1;
                   1864: 	    }
1.49      albertel 1865: 	}
                   1866: 	my $todo = 
1.158     www      1867: 	    &escape(&encode_queue_key($symb,$udom,$uname));
1.58      albertel 1868: 	if ($cannot_grade) {
1.159     albertel 1869: 	    $result.=&Apache::loncommon::start_data_table_row().
                   1870: 		'<td>&nbsp;</td><td>'.$classlist->{$student}[&Apache::loncoursedata::CL_FULLNAME()].
1.58      albertel 1871: 		'</td><td>';
                   1872: 	} else {
1.62      albertel 1873: 	    my $seclist;
                   1874: 	    foreach my $sec (@chosen_sections) {
                   1875: 		$seclist.='<input type="hidden" name="chosensections" 
                   1876:                                value="'.$sec.'" />';
                   1877: 	    }
1.159     albertel 1878: 	    $result.=&Apache::loncommon::start_data_table_row();
1.58      albertel 1879: 	    $result.=<<RESULT;
1.49      albertel 1880:   <td>
1.115     albertel 1881:     <form style="display: inline" method="post">
1.49      albertel 1882:       <input type="hidden" name="gradingkey" value="$todo" />
                   1883:       <input type="hidden" name="queue" value="$queue" />
                   1884:       <input type="hidden" name="webgrade" value="no" />
1.52      albertel 1885:       <input type="hidden" name="regrade" value="yes" />
1.62      albertel 1886:       <input type="submit" name="submit" value="Regrade" />
                   1887:       $seclist
1.49      albertel 1888:     </form>
1.155     albertel 1889:   <td>$classlist->{$student}[&Apache::loncoursedata::CL_FULLNAME()] <tt>($student)</tt></td>
1.49      albertel 1890:   <td>
                   1891: RESULT
1.58      albertel 1892:         }
1.49      albertel 1893:         if ($status{'status'} eq 'pass') {
                   1894: 	    $result .= '<font color="green">'.&mt('Passed').'</font>';
                   1895: 	} elsif ($status{'status'} eq 'fail') {
                   1896: 	    $result .= '<font color="red">'.&mt('Failed').'</font>';
                   1897: 	} elsif ($status{'status'} eq 'review') {
                   1898: 	    $result .= '<font color="blue">'.&mt('Under Review').'</font>';
                   1899: 	} elsif ($status{'status'} eq 'ungraded') {
                   1900: 	    $result .= &mt('Ungraded');
                   1901: 	} elsif ($status{'status'} ne '') {
                   1902: 	    $result .= '<font color="orange">'.&mt('Unknown Status').'</font>';
                   1903: 	} else {
                   1904: 	    $result.="&nbsp;";
                   1905: 	}
                   1906: 	if ($status{'version'}) {
                   1907: 	    $result .= ' '.&mt('Version').' '.$status{'version'};
                   1908: 	}
1.101     albertel 1909: 	if ($status{'grader'}) {
                   1910: 	    $result .= ' '.&mt('(Graded by [_1])',$status{'grader'}).' ';
                   1911: 	}
1.49      albertel 1912: 	$result.= '</td><td>';
                   1913: 	if ($status{'reviewqueue'} eq 'enqueued') {
                   1914: 	    $result .= &mt('Awaiting Review');
                   1915: 	} elsif ($status{'reviewqueue'} eq 'locked') {
                   1916: 	    $result .= &mt('Under Review');
1.58      albertel 1917: 	} elsif ($status{'reviewqueue'} eq 'in_progress') {
                   1918: 	    $result .= &mt('Still being worked on.');
1.49      albertel 1919: 	} elsif ($status{'gradingqueue'} eq 'enqueued') {
                   1920: 	    $result .= &mt('Awaiting Grading');
                   1921: 	} elsif ($status{'gradingqueue'} eq 'locked') {
                   1922: 	    $result .= &mt('Being Graded');
1.58      albertel 1923: 	} elsif ($status{'gradingqueue'} eq 'in_progress') {
                   1924: 	    $result .= &mt('Still being worked on.');
1.49      albertel 1925: 	} else {
                   1926: 	    $result.="&nbsp;";
                   1927: 	}
1.159     albertel 1928: 	$result.= '</td>'.&Apache::loncommon::end_data_table_row();
1.49      albertel 1929:     }
1.159     albertel 1930:     $result.=&Apache::loncommon::end_data_table();
1.49      albertel 1931:     return $result;
                   1932: }
                   1933: 
                   1934: sub get_student_status {
1.86      albertel 1935:     my ($symb,$cdom,$cnum,$udom,$uname,$type)=@_;
                   1936: 
                   1937:     my %status;
                   1938: 
                   1939:     if ($type eq 'Task') {
                   1940: 	my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
1.49      albertel 1941: 					  $udom,$uname);
1.89      albertel 1942: 	$status{'status'}=$record{'resource.0.status'};
                   1943: 	$status{'version'}=$record{'resource.0.version'};
                   1944: 	$status{'grader'}=$record{'resource.0.regrader'};
1.86      albertel 1945:     }
                   1946:     $status{'reviewqueue'}=
                   1947: 	&check_queue_for_key($cdom,$cnum,'reviewqueue',
                   1948: 			     &encode_queue_key($symb,$udom,$uname));
                   1949:     $status{'gradingqueue'}=
                   1950: 	&check_queue_for_key($cdom,$cnum,'gradingqueue',
                   1951: 			     &encode_queue_key($symb,$udom,$uname));
1.49      albertel 1952:     return %status;
                   1953: }
                   1954: 
1.1       albertel 1955: sub start_ClosingParagraph {
                   1956:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1957:     my $result;
                   1958:     if ($target eq 'web') {
1.13      albertel 1959:     } elsif ($target eq 'webgrade') {
                   1960: 	&Apache::lonxml::startredirection();
1.1       albertel 1961:     }
                   1962:     return $result;
                   1963: }
                   1964: 
                   1965: sub end_ClosingParagraph {
                   1966:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1967:     my $result;
                   1968:     if ($target eq 'web') {
1.13      albertel 1969:     } elsif ($target eq 'webgrade') {
                   1970: 	&Apache::lonxml::endredirection();
1.1       albertel 1971:     }
                   1972:     return $result;
                   1973: }
                   1974: 
1.168     albertel 1975: sub get_dim_id {
                   1976:     return $Apache::bridgetask::dimension[-1];
                   1977: }
                   1978: 
1.19      albertel 1979: sub get_id {
                   1980:     my ($parstack,$safeeval)=@_;
                   1981:     my $id=&Apache::lonxml::get_param('id',$parstack,$safeeval);
                   1982:     if (!$id) { $id=$Apache::lonxml::curdepth; }
                   1983:     return $id;
                   1984: }
                   1985: 
1.162     albertel 1986: sub start_Setup {
                   1987:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.168     albertel 1988:     #undef(%dimension);
                   1989:     my $dim = &get_id($parstack,$safeeval);
                   1990:     push(@Apache::bridgetask::dimension,$dim);
1.162     albertel 1991:     &Apache::lonxml::startredirection();
1.168     albertel 1992:     return &internal_location($dim);
1.162     albertel 1993: }
1.173     albertel 1994: 
                   1995: {
                   1996:     my @allowed;
                   1997:     sub enable_dimension_parsing {
                   1998: 	my ($id) = @_;
                   1999: 	push(@allowed,$id);
                   2000:     }
                   2001:     sub disable_dimension_parsing {
                   2002: 	pop(@allowed);
                   2003:     }
                   2004:     sub skip_dimension_parsing {
                   2005: 	my ($check) = @_;
                   2006: 	if (!@allowed) { return 0;}
                   2007: 	# if unspecified allow any id
                   2008: 	if ($allowed[-1] eq undef) { return 0;}
                   2009: 
                   2010: 	return ($check ne $allowed[-1]);
                   2011:     }
                   2012: }
                   2013: 
1.151     albertel 2014: sub start_Question { return &start_Dimension(@_); }
1.1       albertel 2015: sub start_Dimension {
1.173     albertel 2016:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.168     albertel 2017:     my $dim = &get_id($parstack,$safeeval);
                   2018:     my $previous_dim;
                   2019:     if (@Apache::bridgetask::dimension) {
                   2020: 	$previous_dim = $Apache::bridgetask::dimension[-1];
                   2021: 	push(@{$Apache::bridgetask::dimension{$previous_dim}{'contains'}},
                   2022: 	     $dim);
1.173     albertel 2023: 	if(&skip_dimension_parsing($dim)) {
                   2024: 	    $dimension{$previous_dim}{'criteria.'.$dim} =
                   2025: 		$token->[4]
                   2026: 		.&Apache::lonxml::get_all_text('/'.$tagstack->[-1],$parser,
                   2027: 					      $style)
                   2028: 		.'</'.$tagstack->[-1].'>';
                   2029: 	}
1.169     albertel 2030: 	$dimension{$previous_dim}{'criteria.'.$dim.'.type'}='dimension';
                   2031: 	$dimension{$previous_dim}{'criteria.'.$dim.'.mandatory'}=
                   2032: 	    &Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
                   2033: 	push(@{$dimension{$previous_dim}{'criterias'}},$dim);
1.171     albertel 2034: 	$dimension{$dim}{'nested'}=$previous_dim;
1.172     albertel 2035: 	&Apache::lonxml::debug("adding $dim as criteria to $previous_dim");
1.168     albertel 2036:     } else {
                   2037: 	$Apache::bridgetask::top_dimensionlist{$dim}{'manadatory'}=
                   2038: 	    &Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
                   2039:     }
                   2040:     push(@Apache::bridgetask::dimension,$dim);
1.54      albertel 2041:     &Apache::lonxml::startredirection();
1.173     albertel 2042:     &enable_dimension_parsing($dim);
1.168     albertel 2043:     return &internal_location($dim);
1.1       albertel 2044: }
                   2045: 
1.160     albertel 2046: sub start_QuestionText {
                   2047:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.168     albertel 2048:     my $dim = &get_dim_id();
1.160     albertel 2049:     my $text=&Apache::lonxml::get_all_text('/questiontext',$parser,$style);
                   2050:     if ($target eq 'grade' || $target eq 'web' || $target eq 'webgrade') {
1.169     albertel 2051: 	$dimension{$dim}{'questiontext'}=$text;
1.160     albertel 2052:     }
                   2053:     return '';
                   2054: }
                   2055: 
                   2056: sub end_QuestionText {
                   2057:     return '';
                   2058: }
                   2059: 
1.13      albertel 2060: sub get_instance {
1.75      albertel 2061:     my ($dim)=@_;
                   2062:     my $rand_alg=&Apache::lonnet::get_rand_alg();
                   2063:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                   2064: 	$rand_alg eq '64bit2' || $rand_alg eq '64bit3' ||
                   2065: 	$rand_alg eq '64bit4' ) {
                   2066: 	&Apache::response::pushrandomnumber();
1.169     albertel 2067: 	my @order=&Math::Random::random_permutation(@{$dimension{$dim}{'instances'}});
1.75      albertel 2068: 	my $num=@order;
                   2069: 	my $version=&get_version();
                   2070: 	my $which=($version-1)%$num;
                   2071: 	return $order[$which];
                   2072:     } else {
                   2073: 	my ($version,$previous) = &get_version();
                   2074: 	my $instance = 
                   2075: 	    $Apache::lonhomework::history{"resource.$version.0.$dim.instance"};
                   2076: 	if (defined($instance)) { return $instance; }
                   2077: 
                   2078: 	&Apache::response::pushrandomnumber();
1.173     albertel 2079: 	if (ref($dimension{$dim}{'instances'}) eq 'ARRAY') {
                   2080: 	    my @instances = @{$dimension{$dim}{'instances'}};
                   2081: 	    # remove disabled instances
                   2082: 	    for (my $i=0; $i < $#instances; $i++) {
                   2083: 		if ($dimension{$dim}{$instances[$i].'.disabled'}) {
                   2084: 		    splice(@instances,$i,1);
                   2085: 		    $i--;
                   2086: 		}
                   2087: 	    }
                   2088: 	    @instances = &Math::Random::random_permutation(@instances);
                   2089: 	    $instance  = $instances[($version-1)%scalar(@instances)];
                   2090: 	    if ($version =~ /^\d$/) {
                   2091: 		$Apache::lonhomework::results{"resource.$version.0.$dim.instance"} = 
                   2092: 		    $instance;
                   2093: 		$Apache::lonhomework::results{'INTERNAL_store'} = 1; 
1.75      albertel 2094: 	    }
                   2095: 	}
                   2096: 	&Apache::response::poprandomnumber();
                   2097: 	return $instance;
                   2098:     }
1.13      albertel 2099: }
                   2100: 
1.169     albertel 2101: sub get_criteria {
                   2102:     my ($what,$version,$dim,$id) = @_;
                   2103:     my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
                   2104:     my $prefix = ($type eq 'criteria') ? "$dim.$id"
                   2105: 	                               : "$id";
                   2106:     my $entry = "resource.$version.0.$prefix.$what";
                   2107:     if (exists($Apache::lonhomework::results{$entry})) {
                   2108: 	return $Apache::lonhomework::results{$entry};
                   2109:     }
                   2110:     return $Apache::lonhomework::history{$entry};
                   2111: }
                   2112: 
1.18      albertel 2113: {
                   2114:     my $last_link;
1.122     albertel 2115:     sub link {
1.151     albertel 2116: 	my ($id) = @_;
                   2117: 	$id =~ s/\./_/g;
                   2118: 	return 'LC_GRADING_criteria_'.$id;
1.122     albertel 2119:     }
1.151     albertel 2120:     sub end_Question { return &end_Dimension(@_); }
1.18      albertel 2121:     sub end_Dimension {
                   2122: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.54      albertel 2123: 	my $result=&Apache::lonxml::endredirection();
1.25      albertel 2124: 	my $dim=&get_id($parstack,$safeeval);
1.173     albertel 2125: 	if (&skip_dimension_parsing($dim)) {
                   2126: 	    &disable_dimension_parsing($dim);
                   2127: 	    pop(@Apache::bridgetask::dimension);
                   2128: 	    return;
                   2129: 	}
1.75      albertel 2130: 	my $instance=&get_instance($dim);
1.25      albertel 2131: 	my $version=&get_version();
1.18      albertel 2132: 	if ($target eq 'web') {
1.173     albertel 2133: 	    $result .= &nested_parse(\$dimension{$dim}{'intro'},[@_]);
1.76      albertel 2134: 	    my @instances = $instance;
                   2135: 	    if (&Apache::response::showallfoils()) {
1.169     albertel 2136: 		@instances = @{$dimension{$dim}{'instances'}};
1.76      albertel 2137: 	    }
1.160     albertel 2138: 	    my $shown_question_text;
1.76      albertel 2139: 	    foreach my $instance (@instances) {
1.173     albertel 2140: 		$result .= &nested_parse(\$dimension{$dim}{$instance.'.text'},
                   2141: 					 [@_]);
                   2142: 		$result .= &nested_parse(\$dimension{$dim}{'questiontext'},
                   2143: 					 [@_],{'set_dim_id' => undef});
1.169     albertel 2144: 		my $task_status = 
                   2145: 		    $Apache::lonhomework::history{"resource.$version.0.status"};
1.173     albertel 2146: 		if ($task_status ne 'pass' && $task_status ne 'fail') {
1.76      albertel 2147: 
1.173     albertel 2148: 		    foreach my $id (@{$dimension{$dim}{$instance.'.criterias'}},
                   2149: 				    @{$dimension{$dim}{'criterias'}}) {
                   2150: 			my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
                   2151: 			&Apache::lonxml::debug("$id is $type");
                   2152: 			if ($type eq 'dimension') {
                   2153: 			    $result.=
                   2154: 				&nested_parse(\$dimension{$dim}{'criteria.'.$id},
                   2155: 					      [@_],{'set_dim_id' => $id});
                   2156: 			}
                   2157: 		    }
                   2158: 		} else {
1.89      albertel 2159: 		    my $dim_status=$Apache::lonhomework::history{"resource.$version.0.$dim.status"};
1.76      albertel 2160: 		    my $mandatory='Mandatory';
                   2161: 		    if ($Apache::bridgetask::dimensionmandatory{$dim} eq 'N') {
                   2162: 			$mandatory='Optional';
                   2163: 		    }
1.116     albertel 2164: 		    my $dim_info="<div class='LC_$dim_status LC_question_grade'>\n";
1.76      albertel 2165: 		    if ($dim_status eq 'pass') {
                   2166: 			$dim_info.='<h3>Question : you passed this '.$mandatory.' question</h3>';
1.54      albertel 2167: 		    }
1.76      albertel 2168: 		    if ($dim_status eq 'fail') {
                   2169: 			$dim_info.='<h3>Question : you did not pass this '.$mandatory.' question</h3>';
1.53      albertel 2170: 		    }
1.76      albertel 2171: 		    my $man_count=0;
                   2172: 		    my $man_passed=0;
                   2173: 		    my $opt_count=0;
                   2174: 		    my $opt_passed=0;
1.169     albertel 2175: 		    foreach my $id ( @{$dimension{$dim}{$instance.'.criterias'}},
                   2176: 				     @{$dimension{$dim}{'criterias'}} ) {
                   2177: 			my $status = &get_criteria('status',$version,$dim,$id);
                   2178: 			if ($dimension{$dim}{'criteria.'.$id.'.mandatory'} 
1.76      albertel 2179: 			    eq 'N') {
                   2180: 			    $opt_count++;
1.169     albertel 2181: 			    if ($status eq 'pass') { $opt_passed++; }
1.76      albertel 2182: 			} else {
                   2183: 			    $man_count++;
1.169     albertel 2184: 			    if ($status eq 'pass') { $man_passed++; }
1.76      albertel 2185: 			}
1.22      albertel 2186: 		    }
1.76      albertel 2187: 		    if ($man_passed eq $man_count) { $man_passed='all'; }
1.151     albertel 2188: 
1.169     albertel 2189: 		    my $opt_req=$dimension{$dim}{$instance.'.optionalrequired'};
1.151     albertel 2190: 		    if ($opt_req !~ /\S/) {
                   2191: 			$opt_req=
                   2192: 			    &Apache::lonxml::get_param('OptionalRequired',
                   2193: 						       $parstack,$safeeval);
                   2194: 			if ($opt_req !~ /\S/) { $opt_req = 0; }
                   2195: 		    }
1.76      albertel 2196: 		    $dim_info.="\n<p>".&mt('You passed [_1] of the [_2] mandatory components and [_3] of the [_4] optional components, of which you were required to pass [_5].',$man_passed,$man_count,$opt_passed,$opt_count,$opt_req)."</p>\n</div>";
                   2197: 
                   2198: 		    my $internal_location=&internal_location($dim);
                   2199: 		    $result=~s/\Q$internal_location\E/$dim_info/;
                   2200: 
1.169     albertel 2201: 		    foreach my $id (@{$dimension{$dim}{$instance.'.criterias'}},
                   2202: 				    @{$dimension{$dim}{'criterias'}}) {
                   2203: 			my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
1.171     albertel 2204: 			if ($type eq 'dimension') {
                   2205: 			    $result.=$dimension{$id}{'result'};
                   2206: 			    next;
                   2207: 			}
1.169     albertel 2208: 			my $status= &get_criteria('status', $version,$dim,$id);
                   2209: 			my $comment=&get_criteria('comment',$version,$dim,$id);
                   2210: 			my $mandatory=($dimension{$dim}{'criteria.'.$id.'.mandatory'} ne 'N');
1.76      albertel 2211: 			if ($mandatory) {
                   2212: 			    $mandatory='Mandatory';
                   2213: 			} else {
                   2214: 			    $mandatory='Optional';
                   2215: 			}
                   2216: 			if ($status eq 'fail') {
                   2217: 			} elsif ($status eq 'pass') {
                   2218: 			} else {
                   2219: 			    &Apache::lonxml::error("Student viewing a graded bridgetask was shown a status of $status");
                   2220: 			}
                   2221: 			my $status_display=$status;
                   2222: 			$status_display=~s/^([a-z])/uc($1)/e;
1.116     albertel 2223: 			$result.=
                   2224: 			    '<div class="LC_'.$status.' LC_criteria"><h4>'
                   2225: 			    .$mandatory.' Criteria</h4><p>';
1.173     albertel 2226: 			$result.=
                   2227: 			    &nested_parse(\$dimension{$dim}{'criteria.'.$id},
                   2228: 					  [@_],{'set_dim_id' => $id});
1.116     albertel 2229: 			$result.='</p><p class="LC_grade">'.$status_display.'</p>';
1.169     albertel 2230: 			if ($comment) {
                   2231: 			    $result.='<p class="LC_comment">'.
                   2232: 				&mt('Comment: [_1]',$comment).'</p>';
1.76      albertel 2233: 			}
                   2234: 			$result.='</div>';
1.22      albertel 2235: 		    }
                   2236: 		}
                   2237: 	    }
1.18      albertel 2238: 	} elsif ($target eq 'webgrade') {
1.47      albertel 2239: 	    # in case of any side effects that we need
1.173     albertel 2240: 	    &nested_parse(\$dimension{$dim}{'intro'},[@_]);
                   2241: 	    &nested_parse(\$dimension{$dim}{$instance.'.text'},[@_]);
                   2242: 	    $result.=
                   2243: 		&nested_parse(\$dimension{$dim}{'questiontext'},[@_],
1.180     albertel 2244: 			      {'set_dim_id'          => undef,
                   2245: 			       'delayed_dim_results' => 1});
1.169     albertel 2246: 	    foreach my $id (@{$dimension{$dim}{$instance.'.criterias'}},
                   2247: 			    @{$dimension{$dim}{'criterias'}} ) {
                   2248: 		my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
1.171     albertel 2249: 		if ($type eq 'dimension') {
                   2250: 		    # dimensional 'criteria' don't get assigned grades
1.173     albertel 2251: 		    $result.=
                   2252: 			&nested_parse(\$dimension{$dim}{'criteria.'.$id},
                   2253: 				      [@_],{'set_dim_id' => $id});
1.171     albertel 2254: 		    next;
                   2255: 		}
1.169     albertel 2256: 
1.151     albertel 2257: 		my $link=&link($id);
1.169     albertel 2258: 		my $status= &get_criteria('status',$version,$dim,$id);
1.120     albertel 2259: 		$result.='<div class="LC_GRADING_criteria" id="'.$link.'">'."\n".
1.136     albertel 2260: 		    '<div class="LC_GRADING_criteriatext" id="next_'.$last_link.'">'."\n";
1.173     albertel 2261: 		$result.=
                   2262: 		    &nested_parse(\$dimension{$dim}{'criteria.'.$id},[@_]);
                   2263: 
1.111     albertel 2264: 		$result.='</div>'."\n".
1.120     albertel 2265: 		    '<div class="LC_GRADING_grade">'."\n".
                   2266: 		    '<label class="LC_GRADING_ungraded"><input type="radio" name="HWVAL_'.$link.'" value="ungraded" '.($status eq 'ungraded' || !$status ? 'checked="checked"':'').' />'.&mt('Ungraded').'</label>'."\n".
                   2267: 		    '<label class="LC_GRADING_fail"><input type="radio" name="HWVAL_'.$link.'" value="fail" '.($status eq 'fail' ? 'checked="checked"':'').' />'.&mt('Fail').'</label>'."\n".
                   2268: 		    '<label class="LC_GRADING_pass"><input type="radio" name="HWVAL_'.$link.'" value="pass" '.($status eq 'pass' ? 'checked="checked"':'').' />'.&mt('Pass').'</label>'."\n".
                   2269: 		    '<label class="LC_GRADING_review"><input type="radio" name="HWVAL_'.$link.'" value="review" '.($status eq 'review' ? 'checked="checked"':'').' />'.&mt('Review').'</label>'."\n".
1.111     albertel 2270: 		    '</div>'."\n".
1.120     albertel 2271: 		    '<label class="LC_GRADING_comment">'.&mt('Additional Comment for Student')."\n".
1.169     albertel 2272: 		    '<textarea class="LC_GRADING_comment_area" name="HWVAL_comment_'.$link.'">'.&HTML::Entities::encode(&get_criteria('comment',$version,$dim,$id),'<>"&').'</textarea>'."\n".
1.111     albertel 2273: 		    '</label>'."\n".
1.120     albertel 2274: 		    '<ul class="LC_GRADING_navbuttons">'."\n".
1.111     albertel 2275: 		    '<li><a href="#'.$last_link.'">Prev</a></li>'."\n".
                   2276: 		    '<li><a href="#next_'.$link.'">Next</a></li>'."\n".
                   2277: 		    '</ul>'."\n".
                   2278:                     '</div>'."\n";
1.151     albertel 2279: 		$result.=&grading_history($version,$dim,$id);
1.18      albertel 2280: 		$last_link=$link;
                   2281: 	    }
1.180     albertel 2282: 	    if (&nest()) {
1.173     albertel 2283: 		&Apache::lonxml::debug(" for $dim stashing results into ".$dimension{$dim}{'nested'});
                   2284: 		$dimension{$dimension{$dim}{'nested'}}{'result'}.=$result;
1.171     albertel 2285: 		undef($result);
                   2286: 	    }
1.22      albertel 2287: 	} elsif ($target eq 'grade' && $env{'form.webgrade'}) {
1.19      albertel 2288: 	    my $optional_passed=0;
1.20      albertel 2289: 	    my $mandatory_failed=0;
                   2290: 	    my $ungraded=0;
                   2291: 	    my $review=0;
1.153     albertel 2292: 
1.173     albertel 2293: 	    $result .= &nested_parse(\$dimension{$dim}{'intro'},[@_]);
                   2294: 	    $result .= &nested_parse(\$dimension{$dim}{$instance.'.text'},
                   2295: 				     [@_]);
                   2296: 	    $result .= &nested_parse(\$dimension{$dim}{'questiontext'},
                   2297: 				     [@_],{'set_dim_id' => undef});
1.160     albertel 2298: 
1.169     albertel 2299: 	    foreach my $id (@{$dimension{$dim}{$instance.'.criterias'}},
                   2300: 			    @{$dimension{$dim}{'criterias'}}) {
1.151     albertel 2301: 		my $link=&link($id);
1.169     albertel 2302: 
                   2303: 		my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
                   2304: 		if ($type eq 'criteria') {
                   2305: 		    # dimensional 'criteria' don't get assigned grades
                   2306: 		    $Apache::lonhomework::results{"resource.$version.0.$dim.$id.status"}=$env{'form.HWVAL_'.$link};
                   2307: 		    $Apache::lonhomework::results{"resource.$version.0.$dim.$id.comment"}=$env{'form.HWVAL_comment_'.$link};
1.173     albertel 2308: 		} else {
                   2309: 		    $result .=
                   2310: 			&nested_parse(\$dimension{$dim}{'criteria.'.$id},
                   2311: 				      [@_],{'set_dim_id' => $id});
1.169     albertel 2312: 		}
                   2313: 		my $status= &get_criteria('status',$version,$dim,$id);
                   2314: 
                   2315: 		my $mandatory=($dimension{$dim}{'criteria.'.$id.'.mandatory'} ne 'N');
1.20      albertel 2316: 		if ($status eq 'pass') {
                   2317: 		    if (!$mandatory) { $optional_passed++; }
                   2318: 		} elsif ($status eq 'fail') {
                   2319: 		    if ($mandatory) { $mandatory_failed++; }
1.21      albertel 2320: 		} elsif ($status eq 'review') {
                   2321: 		    $review++;
1.20      albertel 2322: 		} elsif ($status eq 'ungraded') {
                   2323: 		    $ungraded++;
1.21      albertel 2324: 		} else {
1.47      albertel 2325: 		    $ungraded++;
1.19      albertel 2326: 		}
                   2327: 	    }
1.151     albertel 2328: 	    # FIXME optional required can apply to only <instance> right now...
1.169     albertel 2329: 	    my $opt_req=$dimension{$dim}{$instance.'.optionalrequired'};
1.151     albertel 2330: 	    if ($opt_req !~ /\S/) {
                   2331: 		$opt_req=
                   2332: 		    &Apache::lonxml::get_param('OptionalRequired',
                   2333: 					       $parstack,$safeeval);
                   2334: 		if ($opt_req !~ /\S/) { $opt_req = 0; }
                   2335: 	    }
                   2336: 	    if ($optional_passed < $opt_req) {
1.20      albertel 2337: 		$mandatory_failed++;
                   2338: 	    }
1.169     albertel 2339: 	    &Apache::lonxml::debug("all instance ".join(':',@{$dimension{$dim}{$instance.'.criterias'}})." results -> m_f $mandatory_failed o_p $optional_passed u $ungraded r $review");
1.20      albertel 2340: 	    if ($review) {
1.89      albertel 2341: 		$Apache::lonhomework::results{"resource.$version.0.$dim.status"}=
1.22      albertel 2342: 		    'review';
1.20      albertel 2343: 	    } elsif ($ungraded) {
1.89      albertel 2344: 		$Apache::lonhomework::results{"resource.$version.0.$dim.status"}=
1.22      albertel 2345: 		    'ungraded';
1.20      albertel 2346: 	    } elsif ($mandatory_failed) {
1.89      albertel 2347: 		$Apache::lonhomework::results{"resource.$version.0.$dim.status"}=
1.22      albertel 2348: 		    'fail';
1.20      albertel 2349: 	    } else {
1.91      albertel 2350: 		$Apache::lonhomework::results{"resource.$version.0.$dim.status"}=
1.22      albertel 2351: 		    'pass';
1.20      albertel 2352: 	    }
1.69      albertel 2353: 	} else {
                   2354: 	    # any other targets no output
                   2355: 	    undef($result);
1.13      albertel 2356: 	}
1.173     albertel 2357: 	&disable_dimension_parsing();
1.169     albertel 2358: 	pop(@Apache::bridgetask::dimension);
1.18      albertel 2359: 	return $result;
1.1       albertel 2360:     }
1.162     albertel 2361: 
                   2362:     sub end_Setup {
                   2363: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2364: 	my $result=&Apache::lonxml::endredirection();
                   2365: 	my $dim=&get_id($parstack,$safeeval);
                   2366: 	my $instance=&get_instance($dim);
                   2367: 	my $version=&get_version();
                   2368: 	if ($target eq 'web') {
                   2369: 	    @Apache::scripttag::parser_env = @_;
1.169     albertel 2370: 	    $result.=&Apache::scripttag::xmlparse($dimension{$dim}{'intro'});
1.162     albertel 2371: 	    my @instances = $instance;
                   2372: 	    if (&Apache::response::showallfoils()) {
1.169     albertel 2373: 		@instances = @{$dimension{$dim}{'instances'}};
1.162     albertel 2374: 	    }
                   2375: 	    foreach my $instance (@instances) {
                   2376: 		@Apache::scripttag::parser_env = @_;
1.169     albertel 2377: 		$result.=&Apache::scripttag::xmlparse($dimension{$dim}{$instance.'.text'});
1.162     albertel 2378: 		@Apache::scripttag::parser_env = @_;
1.169     albertel 2379: 		$result.=&Apache::scripttag::xmlparse($dimension{$dim}{'questiontext'});
1.162     albertel 2380: 	    }
                   2381: 	} elsif ($target eq 'webgrade' 
                   2382: 		 || $target eq 'grade' && $env{'form.webgrade'}) {
                   2383: 	    # in case of any side effects that we need
                   2384: 	    @Apache::scripttag::parser_env = @_;
1.169     albertel 2385: 	    &Apache::scripttag::xmlparse($dimension{$dim}{'intro'});
1.162     albertel 2386: 	    @Apache::scripttag::parser_env = @_;
1.169     albertel 2387: 	    &Apache::scripttag::xmlparse($dimension{$dim}{$instance.'.text'});
1.162     albertel 2388: 	    @Apache::scripttag::parser_env = @_;
1.169     albertel 2389: 	    &Apache::scripttag::xmlparse($dimension{$dim}{'questiontext'});
1.162     albertel 2390: 	} else {
                   2391: 	    # any other targets no output
                   2392: 	    undef($result);
                   2393: 	}
1.169     albertel 2394: 	pop(@Apache::bridgetask::dimension);
1.162     albertel 2395: 	return $result;
                   2396:     }
1.1       albertel 2397: }
                   2398: 
1.113     albertel 2399: sub grading_history {
1.151     albertel 2400:     my ($version,$dim,$id) = @_;
1.113     albertel 2401:     if (!&Apache::lonnet::allowed('mgq',$env{'request.course.id'})) {
                   2402: 	return '';
                   2403:     }
                   2404:     my ($result,$grader);
1.151     albertel 2405:     my $scope="resource.$version.0.$dim.$id";
1.113     albertel 2406:     foreach my $t (1..$Apache::lonhomework::history{'version'}) {
                   2407: 	if (exists($Apache::lonhomework::history{$t.':resource.0.regrader'})) {
                   2408: 	    my ($gname,$gdom) = 
1.138     albertel 2409: 		split(':',$Apache::lonhomework::history{$t.':resource.0.regrader'});
1.113     albertel 2410: 	    my $fullname = &Apache::loncommon::plainname($gname,$gdom);
                   2411: 	    $grader = &Apache::loncommon::aboutmewrapper($fullname,
                   2412: 							 $gname,$gdom);
                   2413: 	}
                   2414: 	my $entry;
                   2415: 	if (exists($Apache::lonhomework::history{"$t:$scope.status"})) {
                   2416: 	    $entry.="<tt>".$Apache::lonhomework::history{"$t:$scope.status"}.'</tt>';
                   2417: 	}
                   2418: 	if (exists($Apache::lonhomework::history{"$t:$scope.comment"})) {
                   2419: 	    $entry.=' comment: "'.$Apache::lonhomework::history{"$t:$scope.comment"}.'"';
                   2420: 	}
                   2421: 	if ($entry) {
                   2422: 	    $result.= "<li>$grader : $entry </li>";
                   2423: 	}
                   2424:     }
                   2425:     if ($result) {
1.120     albertel 2426: 	return '<ul class="LC_GRADING_pastgrading">'.$result.'</ul>';
1.113     albertel 2427:     }
                   2428:     return '';
                   2429: }
                   2430: 
1.1       albertel 2431: sub start_IntroParagraph {
1.87      albertel 2432:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.1       albertel 2433:     my $result;
1.168     albertel 2434:     my $dim = &get_dim_id();
1.153     albertel 2435:     if ($target eq 'grade' || $target eq 'web' || $target eq 'webgrade') {
1.151     albertel 2436: 	if ($tagstack->[-2] eq 'Dimension' || $tagstack->[-2] eq 'Question' ) {
1.169     albertel 2437: 	    $dimension{$dim}{'intro'}=
1.151     albertel 2438: 		&Apache::lonxml::get_all_text('/introparagraph',
                   2439: 					      $parser,$style);
                   2440:        	} elsif ($tagstack->[-2] eq 'Task' && $target eq 'webgrade') {
1.127     albertel 2441: 	    &Apache::lonxml::startredirection();
1.1       albertel 2442: 	}
1.47      albertel 2443: 	
1.1       albertel 2444:     }
                   2445:     return $result;
                   2446: }
                   2447: 
                   2448: sub end_IntroParagraph {
1.127     albertel 2449:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.128     albertel 2450:     if ($tagstack->[-2] eq 'Task' && $target eq 'webgrade') {
1.127     albertel 2451: 	my $result = &Apache::lonxml::endredirection();
                   2452:     }
1.1       albertel 2453: }
                   2454: 
                   2455: sub start_Instance {
                   2456:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.168     albertel 2457:     my $dim = &get_dim_id();
                   2458:     my $id  = &get_id($parstack,$safeeval);
1.169     albertel 2459:     push(@{$dimension{$dim}{'instances'}},$id);
1.168     albertel 2460:     push(@{$Apache::bridgetask::instance{$dim}},$id);
1.19      albertel 2461:     push(@Apache::bridgetask::instancelist,$id);
1.169     albertel 2462:     $dimension{$dim}{$id.'.optionalrequired'}=
1.19      albertel 2463: 	&Apache::lonxml::get_param('OptionalRequired',$parstack,$safeeval);
1.75      albertel 2464:     my $disabled = &Apache::lonxml::get_param('Disabled',$parstack,$safeeval);
                   2465:     if (lc($disabled) eq 'yes') {
1.169     albertel 2466: 	$dimension{$dim}{$id.'.disabled'}='1';
1.75      albertel 2467:     }
1.1       albertel 2468:     return '';
                   2469: }
                   2470: 
                   2471: sub end_Instance {
                   2472: }
                   2473: 
                   2474: sub start_InstanceText {
1.87      albertel 2475:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.168     albertel 2476:     my $dim = &get_dim_id();
                   2477:     my $instance_id=$Apache::bridgetask::instance{$dim}[-1];
1.87      albertel 2478:     my $text=&Apache::lonxml::get_all_text('/instancetext',$parser,$style);
1.153     albertel 2479:     if ($target eq 'grade' || $target eq 'web' || $target eq 'webgrade') {
1.169     albertel 2480: 	$dimension{$dim}{$instance_id.'.text'}=$text;
1.1       albertel 2481:     }
                   2482:     return '';
                   2483: }
                   2484: 
                   2485: sub end_InstanceText {
                   2486:     return '';
                   2487: }
                   2488: 
                   2489: sub start_Criteria {
1.87      albertel 2490:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2491:     my $criteria=&Apache::lonxml::get_all_text('/criteria',$parser,$style);
1.21      albertel 2492:     if ($target eq 'web' || $target eq 'webgrade' || $target eq 'grade') {
1.168     albertel 2493: 	my $dim = &get_dim_id();
1.19      albertel 2494: 	my $id=&get_id($parstack,$safeeval);
1.169     albertel 2495: 	&Apache::lonxml::debug("Criteria $id with $dim");
1.151     albertel 2496: 	if (&Apache::londefdef::is_inside_of($tagstack,'Instance')) {
1.168     albertel 2497: 	    my $instance_id=$Apache::bridgetask::instance{$dim}[-1];
1.169     albertel 2498: 	    $dimension{$dim}{"criteria.$instance_id.$id"}=$criteria;
                   2499: 	    $dimension{$dim}{"criteria.$instance_id.$id.type"}='criteria';
                   2500: 	    $dimension{$dim}{"criteria.$instance_id.$id.mandatory"}=
1.151     albertel 2501: 		&Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
1.169     albertel 2502: 	    push(@{$dimension{$dim}{$instance_id.'.criterias'}},"$instance_id.$id");
1.151     albertel 2503: 	} else {
1.169     albertel 2504: 	    $dimension{$dim}{'criteria.'.$id}=$criteria;
                   2505: 	    $dimension{$dim}{'criteria.'.$id.'.type'}='criteria';
                   2506: 	    $dimension{$dim}{'criteria.'.$id.'.mandatory'}=
1.151     albertel 2507: 		&Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
1.169     albertel 2508: 	    push(@{$dimension{$dim}{'criterias'}},$id);
1.151     albertel 2509: 	}
1.1       albertel 2510:     }
                   2511:     return '';
                   2512: }
                   2513: 
1.47      albertel 2514: sub end_Criteria {
                   2515: }
                   2516: 
1.4       albertel 2517: sub proctor_validation_screen {
                   2518:     my ($slot) = @_;
                   2519:     my (undef,undef,$domain,$user) = &Apache::lonxml::whichuser();
1.5       albertel 2520:     my $url=&Apache::lonnet::studentphoto($domain,$user,'jpg');
1.44      albertel 2521:     my $name=&Apache::loncommon::plainname($user,$domain);
                   2522:     
1.4       albertel 2523:     my $msg;
1.11      albertel 2524:     if ($env{'form.proctorpassword'}) {
1.4       albertel 2525: 	$msg='<p><font color="red">'.&mt("Failed to authenticate the proctor.")
                   2526: 	    .'</font></p>';
                   2527:     }
1.47      albertel 2528:     if (!$env{'form.proctordomain'}) { $env{'form.proctordomain'}=$domain; }
1.4       albertel 2529:     my $result= (<<ENDCHECKOUT);
                   2530: <h2>Proctor Validation</h2>
                   2531:     <p>Your room's proctor needs to validate your access to this resource.</p>
                   2532:     $msg
1.115     albertel 2533: <form name="checkout" method="post" action="$env{'request.uri'}">
1.4       albertel 2534: <input type="hidden" name="validate" value="yes" />
                   2535: <input type="hidden" name="submitted" value="yes" />
                   2536: <table>
1.44      albertel 2537:   <tr><td>Proctor's Username:</td><td><input type="string" name="proctorname" value="$env{'form.proctorname'}" /></td></tr>
1.4       albertel 2538:   <tr><td>Password:</td><td><input type="password" name="proctorpassword" value="" /></td></tr>
1.46      albertel 2539:   <tr><td>Proctor's Domain:</td><td><input type="string" name="proctordomain" value="$env{'form.proctordomain'}" /></td></tr>
1.4       albertel 2540: </table>
                   2541: <input type="submit" name="checkoutbutton" value="Validate"  /><br />
1.44      albertel 2542: <table border="1">
                   2543:   <tr><td>
                   2544:     <table>
                   2545:       <tr><td colspan="2">Student who should be logged in is:</td></tr>
                   2546:       <tr><td>Name:</td><td>$name</td></tr>
1.45      albertel 2547:       <tr><td>Student ID:</td><td>$env{'environment.id'}</td></tr>
1.138     albertel 2548:       <tr><td>Usename</td><td>$user:$domain</td></tr>
1.44      albertel 2549:       <tr><td colspan="2"><img src="$url" /></td></tr>
                   2550:     </table>
                   2551:   </tr></td>
                   2552: </table>
1.4       albertel 2553: </form>
                   2554: ENDCHECKOUT
                   2555:     return $result;
                   2556: }
                   2557: 
1.1       albertel 2558: 1;
                   2559: __END__

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