Annotation of loncom/homework/lonhomework.pm, revision 1.199

1.63      albertel    1: # The LearningOnline Network with CAPA
1.52      albertel    2: # The LON-CAPA Homework handler
1.63      albertel    3: #
1.199   ! albertel    4: # $Id: lonhomework.pm,v 1.198 2005/03/16 19:09:43 albertel Exp $
1.63      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/
1.159     www        27: 
1.1       albertel   28: 
                     29: package Apache::lonhomework;
                     30: use strict;
1.73      albertel   31: use Apache::style();
                     32: use Apache::lonxml();
                     33: use Apache::lonnet();
                     34: use Apache::lonplot();
                     35: use Apache::inputtags();
                     36: use Apache::structuretags();
                     37: use Apache::randomlabel();
                     38: use Apache::response();
                     39: use Apache::hint();
                     40: use Apache::outputtags();
1.83      albertel   41: use Apache::caparesponse();
                     42: use Apache::radiobuttonresponse();
                     43: use Apache::optionresponse();
                     44: use Apache::imageresponse();
                     45: use Apache::essayresponse();
                     46: use Apache::externalresponse();
1.106     albertel   47: use Apache::rankresponse();
1.107     albertel   48: use Apache::matchresponse();
1.137     albertel   49: use Apache::chemresponse();
1.169     albertel   50: use Apache::drawimage();
1.26      www        51: use Apache::Constants qw(:common);
1.73      albertel   52: use HTML::Entities();
1.83      albertel   53: use Apache::loncommon();
1.146     albertel   54: use Apache::lonlocal;
1.179     albertel   55: use Time::HiRes qw( gettimeofday tv_interval );
1.188     foxr       56: use Apache::lonnet();
                     57: 
1.189     albertel   58: # FIXME - improve commenting
1.188     foxr       59: 
1.43      albertel   60: 
1.69      harris41   61: BEGIN {
1.145     albertel   62:     &Apache::lonxml::register_insert();
1.43      albertel   63: }
                     64: 
1.188     foxr       65: 
                     66: #
1.189     albertel   67: # Decides what targets to render for.
1.188     foxr       68: # Implicit inputs:
                     69: #   Various session environment variables:
1.189     albertel   70: #      request.state -  published  - is a /res/ resource
                     71: #                       uploaded   - is a /uploaded/ resource
                     72: #                       contruct   - is a /priv/ resource
                     73: #      form.grade_target - a form parameter requesting a specific target
1.5       albertel   74: sub get_target {
1.189     albertel   75:     &Apache::lonxml::debug("request.state = $ENV{'request.state'}");
1.188     foxr       76:     if( defined($ENV{'form.grade_target'})) {
1.189     albertel   77: 	&Apache::lonxml::debug("form.grade_target= $ENV{'form.grade_target'}");
1.188     foxr       78:     } else {
1.189     albertel   79: 	&Apache::lonxml::debug("form.grade_target <undefined>");
1.188     foxr       80:     }
1.145     albertel   81:     if (($ENV{'request.state'} eq "published") ||
                     82: 	($ENV{'request.state'} eq "uploaded")) {
                     83: 	if ( defined($ENV{'form.grade_target'}  ) 
                     84: 	     && ($ENV{'form.grade_target'} eq 'tex')) {
                     85: 	    return ($ENV{'form.grade_target'});
                     86: 	} elsif ( defined($ENV{'form.grade_target'}  ) 
                     87: 		  && ($Apache::lonhomework::viewgrades eq 'F' )) {
                     88: 	    return ($ENV{'form.grade_target'});
                     89: 	}
                     90: 
1.62      albertel   91: 	if ( defined($ENV{'form.submitted'}) &&
1.145     albertel   92: 	     ( !defined($ENV{'form.resetdata'})) &&
                     93: 	     ( !defined($ENV{'form.newrandomization'}))) {
                     94: 	    return ('grade', 'web');
                     95: 	} else {
                     96: 	    return ('web');
                     97: 	}
                     98:     } elsif ($ENV{'request.state'} eq "construct") {
                     99: 	if ( defined($ENV{'form.grade_target'}) ) {
                    100: 	    return ($ENV{'form.grade_target'});
                    101: 	}
                    102: 	if ( defined($ENV{'form.preview'})) {
                    103: 	    if ( defined($ENV{'form.submitted'})) {
                    104: 		return ('grade', 'web');
                    105: 	    } else {
                    106: 		return ('web');
                    107: 	    }
                    108: 	} else {
1.150     albertel  109: 	    if ( $ENV{'form.problemmode'} eq &mt('View') ||
                    110: 		 $ENV{'form.problemmode'} eq &mt('Discard Edits and View')) {
1.145     albertel  111: 		if ( defined($ENV{'form.submitted'}) &&
                    112: 		     (!defined($ENV{'form.resetdata'})) &&
                    113: 		     (!defined($ENV{'form.newrandomization'}))) {
                    114: 		    return ('grade', 'web','answer');
                    115: 		} else {
                    116: 		    return ('web','answer');
                    117: 		}
1.190     albertel  118: 	    } elsif ( $ENV{'form.problemmode'} eq &mt('Edit') ||
1.191     albertel  119: 		      $ENV{'form.problemmode'} eq 'Edit') {
1.145     albertel  120: 		if ( $ENV{'form.submitted'} eq 'edit' ) {
1.150     albertel  121: 		    if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145     albertel  122: 			return ('modified','web','answer');
                    123: 		    } else {
                    124: 			return ('modified','edit');
                    125: 		    }
                    126: 		} else {
                    127: 		    return ('edit');
                    128: 		}
                    129: 	    } else {
                    130: 		return ('web');
                    131: 	    }
                    132: 	}
1.15      albertel  133:     }
1.145     albertel  134:     return ();
1.5       albertel  135: }
                    136: 
1.3       albertel  137: sub setup_vars {
1.145     albertel  138:     my ($target) = @_;
                    139:     return ';'
1.11      albertel  140: #  return ';$external::target='.$target.';';
1.2       albertel  141: }
                    142: 
                    143: sub send_header {
1.145     albertel  144:     my ($request)= @_;
                    145:     $request->print(&Apache::lontexconvert::header());
1.16      albertel  146: #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2       albertel  147: }
                    148: 
1.36      albertel  149: sub createmenu {
1.145     albertel  150:     my ($which,$request)=@_;
                    151:     if ($which eq 'grade') {
                    152: 	$request->print('<script language="JavaScript"> 
1.91      albertel  153:           hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52      albertel  154:                  "height=350,width=150,menubar=no");
                    155:           </script>');
1.145     albertel  156:     }
1.36      albertel  157: }
                    158: 
1.2       albertel  159: sub send_footer {
1.145     albertel  160:     my ($request)= @_;
1.16      albertel  161: #  $request->print('</form>');
1.145     albertel  162:     $request->print(&Apache::lontexconvert::footer());
1.2       albertel  163: }
                    164: 
1.52      albertel  165: $Apache::lonxml::browse='';
1.53      www       166: 
1.152     albertel  167: sub check_ip_acc {
                    168:     my ($acc)=@_;
1.154     albertel  169:     if (!defined($acc) || $acc =~ /^\s*$/) { return 1; }
1.152     albertel  170:     my $allowed=0;
                    171:     my $ip=$ENV{'REMOTE_ADDR'};
                    172:     my $name;
                    173:     foreach my $pattern (split(',',$acc)) {
                    174: 	if ($pattern =~ /\*$/) {
                    175: 	    #35.8.*
                    176: 	    $pattern=~s/\*//;
                    177: 	    if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
                    178: 	} elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {    
                    179: 	    #35.8.3.[34-56]
                    180: 	    my $low=$2;
                    181: 	    my $high=$3;
                    182: 	    $pattern=$1;
                    183: 	    if ($ip =~ /^\Q$pattern\E/) { 
                    184: 		my $last=(split(/\./,$ip))[3];
                    185: 		if ($last <=$high && $last >=$low) { $allowed=1; }
                    186: 	    }
                    187: 	} elsif ($pattern =~ /^\*/) {
                    188: 	    #*.msu.edu
                    189: 	    $pattern=~s/\*//;
                    190: 	    if (!defined($name)) {
                    191: 		use Socket;
                    192: 		my $netaddr=inet_aton($ip);
                    193: 		($name)=gethostbyaddr($netaddr,AF_INET);
1.158     albertel  194: 	    }
1.152     albertel  195: 	    if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
                    196: 	} elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
                    197: 	    #127.0.0.1
                    198: 	    if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
                    199: 	} else {
                    200: 	    #some.name.com
                    201: 	    if (!defined($name)) {
                    202: 		use Socket;
                    203: 		my $netaddr=inet_aton($ip);
                    204: 		($name)=gethostbyaddr($netaddr,AF_INET);
                    205: 	    }
                    206: 	    if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
                    207: 	}
                    208: 	if ($allowed) { last; }
                    209:     }
                    210:     return $allowed;
                    211: }
1.198     albertel  212: 
                    213: sub check_task_access {
                    214:     return &check_access;
                    215: }
1.92      bowersj2  216: # JB, 9/24/2002: Any changes in this function may require a change
                    217: # in lonnavmaps::resource::getDateStatus.
1.53      www       218: sub check_access {
1.145     albertel  219:     my ($id) = @_;
                    220:     my $date ='';
                    221:     my $status;
                    222:     my $datemsg = '';
                    223:     my $lastdate = '';
                    224:     my $temp;
                    225:     my $type;
                    226:     my $passed;
                    227: 
                    228:     if ($ENV{'request.state'} eq "construct") {
1.167     albertel  229: 	if ($ENV{'form.problemstate'}) {
1.165     albertel  230: 	    if ($ENV{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
1.167     albertel  231: 		if ( ! ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
                    232: 			lc($Apache::lonhomework::problemstatus) eq 'no')) {
1.168     albertel  233: 		    return ('CANNOT_ANSWER',
1.174     www       234: 			    &mt('is in this state due to author settings.'));
1.167     albertel  235: 		}
1.165     albertel  236: 	    } else {
                    237: 		return ($ENV{'form.problemstate'},
1.174     www       238: 			&mt('is in this state due to author settings.'));
1.165     albertel  239: 	    }
                    240: 	}
1.145     albertel  241: 	&Apache::lonxml::debug("in construction ignoring dates");
                    242: 	$status='CAN_ANSWER';
1.146     albertel  243: 	$datemsg=&mt('is in under construction');
1.163     albertel  244: #	return ($status,$datemsg);
1.145     albertel  245:     }
                    246: 
                    247:     &Apache::lonxml::debug("checking for part :$id:");
                    248:     &Apache::lonxml::debug("time:".time);
1.152     albertel  249: 
1.163     albertel  250:     if ($ENV{'request.state'} ne "construct") {
                    251: 	my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
                    252: 	if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
                    253: 	    $status='INVALID_ACCESS';
                    254: 	    $date=&mt("can not be accessed from your location.");
1.145     albertel  255: 	    return($status,$date);
                    256: 	}
1.163     albertel  257: 	
                    258: 	foreach $temp ("opendate","duedate","answerdate") {
                    259: 	    $lastdate = $date;
                    260: 	    $date = &Apache::lonnet::EXT("resource.$id.$temp");
                    261: 	    my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
                    262: 	    if ($thistype =~ /^(con_lost|no_such_host)/ ||
                    263: 		$date     =~ /^(con_lost|no_such_host)/) {
                    264: 		$status='UNAVAILABLE';
                    265: 		$date=&mt("may open later.");
                    266: 		return($status,$date);
                    267: 	    }
                    268: 	    if ($thistype eq 'date_interval') {
                    269: 		if ($temp eq 'opendate') {
                    270: 		    $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
                    271: 		}
                    272: 		if ($temp eq 'answerdate') {
                    273: 		    $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
                    274: 		}
1.145     albertel  275: 	    }
1.163     albertel  276: 	    &Apache::lonxml::debug("found :$date: for :$temp:");
                    277: 	    if ($date eq '') {
                    278: 		$date = &mt("an unknown date"); $passed = 0;
                    279: 	    } elsif ($date eq 'con_lost') {
                    280: 		$date = &mt("an indeterminate date"); $passed = 0;
                    281: 	    } else {
                    282: 		if (time < $date) { $passed = 0; } else { $passed = 1; }
                    283: 		$date = localtime $date;
1.145     albertel  284: 	    }
1.163     albertel  285: 	    if (!$passed) { $type=$temp; last; }
1.145     albertel  286: 	}
1.163     albertel  287: 	&Apache::lonxml::debug("have :$type:$passed:");
                    288: 	if ($passed) {
                    289: 	    $status='SHOW_ANSWER';
                    290: 	    $datemsg=$date;
                    291: 	} elsif ($type eq 'opendate') {
                    292: 	    $status='CLOSED';
                    293: 	    $datemsg = &mt("will open on")." $date";
                    294: 	} elsif ($type eq 'duedate') {
                    295: 	    $status='CAN_ANSWER';
                    296: 	    $datemsg = &mt("is due at")." $date";
                    297: 	} elsif ($type eq 'answerdate') {
                    298: 	    $status='CLOSED';
                    299: 	    $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145     albertel  300: 	}
                    301:     }
                    302:     if ($status eq 'CAN_ANSWER') {
                    303: 	#check #tries, and if correct.
                    304: 	my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
                    305: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                    306: 	if ( $tries eq '' ) { $tries = '0'; }
1.164     albertel  307: 	if ( $maxtries eq '' && 
                    308: 	     $ENV{'request.state'} ne 'construct') { $maxtries = '2'; } 
                    309: 	if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145     albertel  310: 	# if (correct and show prob status) or excused then CANNOT_ANSWER
                    311: 	if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
                    312: 	    &&
                    313: 	    lc($Apache::lonhomework::problemstatus) ne 'no')
                    314: 	   ||
                    315: 	   $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
                    316: 	    $status = 'CANNOT_ANSWER';
                    317: 	}
1.121     albertel  318:     }
1.181     albertel  319:     if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.177     albertel  320: 	my $interval=&Apache::lonnet::EXT("resource.$id.interval");
                    321: 	&Apache::lonxml::debug("looking for interval $interval");
                    322: 	if ($interval) {
                    323: 	    my $first_access=&Apache::lonnet::get_first_access('map');
                    324: 	    &Apache::lonxml::debug("looking for accesstime $first_access");
                    325: 	    if (!$first_access) {
                    326: 		$status='NOT_YET_VIEWED';
1.192     albertel  327: 		$datemsg=&seconds_to_human_length($interval);
1.177     albertel  328: 	    } else {
                    329: 		my $newdate=localtime($first_access+$interval);
                    330: 		if (time > ($first_access+$interval)) {
                    331: 		    $status='CLOSED';
                    332: 		    $datemsg = &mt("was due on")." $newdate".&mt(", and answers will be available on")." $date";
                    333: 		} else {
                    334: 		    $datemsg = &mt("is due at")." $newdate";
                    335: 		}
                    336: 	    }
                    337: 	}
                    338:     }
1.133     albertel  339:   #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
                    340:   #    (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
                    341:   #    return ('UNCHECKEDOUT','needs to be checked out');
                    342:   #}
1.54      www       343: 
                    344: 
1.145     albertel  345:     &Apache::lonxml::debug("sending back :$status:$datemsg:");
                    346:     if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
                    347: 	&Apache::lonxml::debug("should be allowed to browse a resource when closed");
                    348: 	$status='CAN_ANSWER';
1.146     albertel  349: 	$datemsg=&mt('is closed but you are allowed to view it');
1.145     albertel  350:     }
1.106     albertel  351: 
1.145     albertel  352:     return ($status,$datemsg);
1.20      albertel  353: }
                    354: 
1.192     albertel  355: sub seconds_to_human_length {
                    356:     my ($length)=@_;
                    357: 
                    358:     my $seconds=$length%60; $length=int($length/60);
                    359:     my $minutes=$length%60; $length=int($length/60);
                    360:     my $hours=$length%24;   $length=int($length/24);
                    361:     my $days=$length;
                    362: 
                    363:     my $timestr;
                    364:     if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
                    365:     if ($hours > 0) { $timestr.=($timestr?", ":"").
                    366: 			  &mt('[quant,_1,hour]',$hours); }
                    367:     if ($minutes > 0) { $timestr.=($timestr?", ":"").
                    368: 			    &mt('[quant,_1,minute]',$minutes); }
                    369:     if ($seconds > 0) { $timestr.=($timestr?", ":"").
                    370: 			    &mt('[quant,_1,second]',$seconds); }
                    371:     return $timestr;
                    372: }
                    373: 
1.41      albertel  374: sub showhash {
1.145     albertel  375:     my (%hash) = @_;
                    376:     &showhashsubset(\%hash,'.');
                    377:     return '';
1.79      albertel  378: }
                    379: 
1.106     albertel  380: sub showarray {
                    381:     my ($array)=@_;
                    382:     my $string="(";
                    383:     foreach my $elm (@{ $array }) {
1.193     albertel  384: 	if (ref($elm) eq 'ARRAY') {
                    385: 	    $string.=&showarray($elm);
                    386: 	} elsif (ref($elm) eq 'HASH') {
                    387: 	    $string.= "HASH --- \n<br />";
                    388: 	    $string.= &showhashsubset($elm,'.');
1.106     albertel  389: 	} else {
                    390: 	    $string.="$elm,"
                    391: 	}
                    392:     }
                    393:     chop($string);
                    394:     $string.=")";
                    395:     return $string;
                    396: }
                    397: 
1.79      albertel  398: sub showhashsubset {
1.145     albertel  399:     my ($hash,$keyre) = @_;
                    400:     my $resultkey;
                    401:     foreach $resultkey (sort keys %$hash) {
1.193     albertel  402: 	if ($resultkey !~ /$keyre/) { next; }
                    403: 	if (ref($$hash{$resultkey})  eq 'ARRAY' ) {
                    404: 	    &Apache::lonxml::debug("$resultkey ---- ".
                    405: 				   &showarray($$hash{$resultkey}));
                    406: 	} elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
                    407: 	    &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
                    408: 	    &showhashsubset($$hash{$resultkey},'.');
                    409: 	} else {
                    410: 	    &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145     albertel  411: 	}
                    412:     }
                    413:     &Apache::lonxml::debug("\n<br />restored values^</br>\n");
                    414:     return '';
1.41      albertel  415: }
                    416: 
                    417: sub setuppermissions {
1.145     albertel  418:     $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
                    419:     my $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
                    420:     if (! $viewgrades && 
                    421: 	exists($ENV{'request.course.sec'}) && 
                    422: 	$ENV{'request.course.sec'} !~ /^\s*$/) {
                    423: 	$viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}.
1.127     matthew   424:                                                '/'.$ENV{'request.course.sec'});
1.145     albertel  425:     }
1.188     foxr      426:     $Apache::lonhomework::viewgrades = $viewgrades; # File global variable...dirt.
1.185     albertel  427:     if ($Apache::lonhomework::browse eq 'F' && 
                    428: 	$ENV{'form.devalidatecourseresdata'} eq 'on') {
                    429: 	my (undef,$courseid) = &Apache::lonxml::whichuser();
                    430: 	&Apache::lonnet::devalidatecourseresdata($ENV{"course.$courseid.num"},
                    431: 					      $ENV{"course.$courseid.domain"});
                    432:     }
1.145     albertel  433:     return ''
1.41      albertel  434: }
                    435: 
                    436: sub setupheader {
1.120     albertel  437:     my $request=$_[0];
1.197     albertel  438:     &Apache::loncommon::content_type($request,'text/html');
1.120     albertel  439:     if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
                    440: 	&Apache::loncommon::no_cache($request);
                    441:     }
1.196     albertel  442: #    $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
                    443: #							  'lastrevisiondate'));
1.120     albertel  444:     $request->send_http_header;
                    445:     return OK if $request->header_only;
                    446:     return ''
1.41      albertel  447: }
1.35      albertel  448: 
1.47      albertel  449: sub handle_save_or_undo {
1.145     albertel  450:     my ($request,$problem,$result) = @_;
                    451:     my $file    = &Apache::lonnet::filelocation("",$request->uri);
                    452:     my $filebak =$file.".bak";
                    453:     my $filetmp =$file.".tmp";
                    454:     my $error=0;
1.156     albertel  455: 
                    456:     &Apache::lonnet::correct_line_ends($result);
1.52      albertel  457: 
1.150     albertel  458:     if ($ENV{'form.Undo'} eq &mt('undo')) {
1.145     albertel  459: 	my $error=0;
                    460: 	if (!copy($file,$filetmp)) { $error=1; }
                    461: 	if ((!$error) && (!copy($filebak,$file))) { $error=1; }
                    462: 	if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
                    463: 	if (!$error) {
1.171     albertel  464: 	    &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
1.145     albertel  465: 	} else {
1.171     albertel  466: 	    &Apache::lonxml::info("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");
1.145     albertel  467: 	    $error=1;
                    468: 	}
1.52      albertel  469:     } else {
1.145     albertel  470: 	my $fs=Apache::File->new(">$filebak");
                    471: 	if (defined($fs)) {
                    472: 	    print $fs $$problem;
1.171     albertel  473: 	    &Apache::lonxml::info("<b>".&mt("Making Backup to").
                    474: 				  " $filebak</b>");
1.145     albertel  475: 	} else {
1.171     albertel  476: 	    &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
1.145     albertel  477: 	    $error=2;
                    478: 	}
                    479: 	my $fh=Apache::File->new(">$file");
                    480: 	if (defined($fh)) {
                    481: 	    print $fh $$result;
1.171     albertel  482: 	    &Apache::lonxml::info("<b>".&mt("Saving Modifications to").
                    483: 				  " $file</b>");
1.145     albertel  484: 	} else {
1.171     albertel  485: 	    &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".
                    486: 				  &mt("Unable to write to")." $file</b></font>");
1.145     albertel  487: 	    $error|=4;
                    488: 	}
1.52      albertel  489:     }
1.145     albertel  490:     return $error;
1.64      albertel  491: }
                    492: 
1.101     albertel  493: sub analyze_header {
                    494:     my ($request) = @_;
1.183     albertel  495:     my $bodytag='<body bgcolor="#ffffff">';
                    496:     if ($ENV{'environment.remote'} eq 'off') {
                    497: 	$bodytag=&Apache::loncommon::bodytag();
                    498:     }
1.197     albertel  499:     my $html=&Apache::lonxml::xmlbegin();
                    500:     my $result.=$html.'
1.146     albertel  501:             <head><title>'.&mt("Analyzing a problem").'</title></head>
1.183     albertel  502:             '.$bodytag.&Apache::lonxml::message_location().'
1.101     albertel  503:             <form name="lonhomework" method="POST" action="'.
1.179     albertel  504: 	    &HTML::Entities::encode($ENV{'request.uri'},'<>&"').'">'.
                    505: 	    &Apache::structuretags::remember_problem_state().'
1.146     albertel  506:             <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
                    507:             <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101     albertel  508:             <hr />
1.146     albertel  509:             <input type="submit" name="submit" value="'.&mt("View").'" />
1.101     albertel  510:             <hr />
                    511:             </form>';
1.171     albertel  512:     &Apache::lonxml::add_messages(\$result);
1.101     albertel  513:     $request->print($result);
                    514:     $request->rflush();
                    515: }
                    516: 
1.109     albertel  517: sub analyze_footer {
                    518:     my ($request) = @_;
                    519:     my $result='</body></html>';
                    520:     $request->print($result);
                    521:     $request->rflush();
                    522: }
                    523: 
1.74      albertel  524: sub analyze {
1.101     albertel  525:     my ($request,$file) = @_;
                    526:     &Apache::lonxml::debug("Analyze");
                    527:     my $result;
                    528:     my %overall;
                    529:     my %allparts;
                    530:     my $rndseed=$ENV{'form.rndseed'};
                    531:     &analyze_header($request);
1.114     albertel  532:     my %prog_state=
1.146     albertel  533: 	&Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
                    534: 					      &mt('Getting Problem Variants'),
1.175     albertel  535: 					      $ENV{'form.numtoanalyze'},
                    536: 					      'inline',undef);
1.102     albertel  537:     for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {
1.114     albertel  538: 	&Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146     albertel  539: 						 &mt('last problem'));
1.182     albertel  540: 	if (&Apache::loncommon::connection_aborted($request)) { return; }
1.101     albertel  541: 	my $subresult=&Apache::lonnet::ssi($request->uri,
                    542: 					   ('grade_target' => 'analyze'),
1.130     albertel  543: 					   ('rndseed' => $i+$rndseed));
1.101     albertel  544: 	(my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
                    545: 	my %analyze=&Apache::lonnet::str2hash($subresult);
1.114     albertel  546: 	my @parts;
                    547: 	if (defined(@{ $analyze{'parts'} })) {
                    548: 	    @parts=@{ $analyze{'parts'} };
                    549: 	}
1.101     albertel  550: 	foreach my $part (@parts) {
                    551: 	    if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109     albertel  552: 	    if ($analyze{$part.'.type'} eq 'numericalresponse'	||
                    553: 		$analyze{$part.'.type'} eq 'stringresponse'	||
                    554: 		$analyze{$part.'.type'} eq 'formularesponse'   ) {
1.101     albertel  555: 		push( @{ $overall{$part.'.answer'} },
                    556: 		      [@{ $analyze{$part.'.answer'} }]);
                    557: 	    }
                    558: 	}
                    559:     }
1.114     albertel  560:     &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146     albertel  561: 					  &mt('Analyzing Results'));
1.175     albertel  562:     $request->print('<hr />'.&mt('List of possible answers').': ');
1.134     albertel  563:     foreach my $part (sort(keys(%allparts))) {
1.109     albertel  564: 	if (defined(@{ $overall{$part.'.answer'} })) {
1.132     albertel  565: 	    my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
1.184     albertel  566: 	    $request->print('<table><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');
1.130     albertel  567: 	    my %frequency;
1.109     albertel  568: 	    foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
1.132     albertel  569: 		$frequency{join("\0",@{ $answer })}++;
1.130     albertel  570: 	    }
1.184     albertel  571: 	    $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'</th></tr>');
1.132     albertel  572: 	    foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
                    573: 		$request->print('<tr><td align="right">'.
                    574: 				join('</td><td align="right">',split("\0",$answer)).
1.130     albertel  575: 				'</td><td>('.$frequency{$answer}.
                    576: 				')</td></tr>');
1.109     albertel  577: 	    }
                    578: 	    $request->print('</table>');
                    579: 	} else {
1.162     albertel  580: 	    $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146     albertel  581: 			    &mt('is not analyzable at this time').'</p>');
1.101     albertel  582: 	}
                    583:     }
1.130     albertel  584:     if (scalar(keys(%allparts)) == 0 ) {
1.162     albertel  585: 	$request->print('<p>'.&mt('Found no analyzable respones in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130     albertel  586:     }
1.114     albertel  587:     &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109     albertel  588:     &analyze_footer($request);
1.101     albertel  589:     &Apache::lonhomework::showhash(%overall);
                    590:     return $result;
1.74      albertel  591: }
                    592: 
1.64      albertel  593: sub editxmlmode {
1.145     albertel  594:     my ($request,$file) = @_;
                    595:     my $result;
                    596:     my $problem=&Apache::lonnet::getfile($file);
                    597:     if ($problem eq -1) {
1.146     albertel  598: 	&Apache::lonxml::error("<b> ".&mt('Unable to find').
                    599: 			       " <i>$file</i></b>");
1.145     albertel  600: 	$problem='';
                    601:     }
                    602:     if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
                    603: 	my $error=&handle_save_or_undo($request,\$problem,
                    604: 				       \$ENV{'form.editxmltext'});
                    605: 	if (!$error) { $problem=&Apache::lonnet::getfile($file); }
                    606:     }
1.80      albertel  607:     &Apache::lonhomework::showhashsubset(\%ENV,'^form');
1.150     albertel  608:     if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145     albertel  609: 	&Apache::lonhomework::showhashsubset(\%ENV,'^form');
                    610: 	$ENV{'form.problemmode'}='View';
                    611: 	&renderpage($request,$file);
                    612:     } else {
                    613: 	my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160     www       614: 	my $xml_help = '<table><tr><td>'.
                    615: 	    &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
                    616: 						    "Problem Editing Help").
                    617: 						    '</td><td>'.
1.178     albertel  618:        &Apache::loncommon::help_open_menu('',undef,undef,undef,5,'Authoring').
                    619:                 '</td></tr></table>';
1.145     albertel  620: 	if ($cols > 80) { $cols = 80; }
                    621: 	if ($cols < 70) { $cols = 70; }
                    622: 	if ($rows < 20) { $rows = 20; }
1.183     albertel  623: 	my $bodytag='<body bgcolor="#ffffff">';
                    624: 	if ($ENV{'environment.remote'} eq 'off') {
                    625: 	    $bodytag=&Apache::loncommon::bodytag();
                    626: 	}
1.197     albertel  627: 	my $html=&Apache::lonxml::xmlbegin();
                    628: 	$result.=$html.$bodytag.&Apache::lonxml::message_location().'
1.64      albertel  629:             <form name="lonhomework" method="POST" action="'.
1.179     albertel  630: 	    &HTML::Entities::encode($ENV{'request.uri'},'<>&"').'">'.
                    631: 	    &Apache::structuretags::remember_problem_state().'
1.146     albertel  632:             <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
1.170     matthew   633:             <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
                    634:             <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
1.64      albertel  635:             <hr />
1.170     matthew   636:             <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
                    637:             <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
                    638:             <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
1.64      albertel  639:             <hr />
1.110     albertel  640:             ' . $xml_help . '
1.199   ! albertel  641:             <textarea style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.172     albertel  642: 	    &HTML::Entities::encode($problem,'<>&"').'</textarea>
1.64      albertel  643:             </form></body></html>';
1.171     albertel  644: 	&Apache::lonxml::add_messages(\$result);
1.145     albertel  645: 	$request->print($result);
                    646:     }
                    647:     return '';
1.47      albertel  648: }
1.189     albertel  649: 
1.188     foxr      650: #
                    651: #    Render the page in whatever target desired.
                    652: #
1.41      albertel  653: sub renderpage {
1.145     albertel  654:     my ($request,$file) = @_;
1.52      albertel  655: 
1.145     albertel  656:     my (@targets) = &get_target();
1.161     albertel  657:     &Apache::lonhomework::showhashsubset(\%ENV,'form.');
1.145     albertel  658:     &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.171     albertel  659:     my $overall_result;
1.145     albertel  660:     foreach my $target (@targets) {
1.183     albertel  661: 	# FIXME need to do something intelligent when a problem goes
                    662:         # from viewable to not viewable due to map conditions
                    663: 	#&setuppermissions();
                    664: 	#if (   $Apache::lonhomework::browse ne '2'
                    665: 	#    && $Apache::lonhomework::browse ne 'F' ) {
                    666: 	#    $request->print(" You most likely shouldn't see me.");
                    667: 	#}
1.145     albertel  668: 	#my $t0 = [&gettimeofday()];
                    669: 	my $problem=&Apache::lonnet::getfile($file);
                    670: 	if ($problem eq -1) {
1.146     albertel  671: 	    &Apache::lonxml::error("<b> ".&mt('Unable to find')." <i>$file</i></b>");
1.145     albertel  672: 	    $problem='';
                    673: 	}
1.52      albertel  674: 
1.145     albertel  675: 	my %mystyle;
                    676: 	my $result = '';
                    677: 	if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
                    678: 	if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
                    679: 	if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
                    680: 
                    681: 	&Apache::lonxml::debug("Should be parsing now");
                    682: 	$result = &Apache::lonxml::xmlparse($request, $target, $problem,
                    683: 					    &setup_vars($target),%mystyle);
                    684: 	undef($Apache::lonhomework::parsing_a_problem);
                    685: 	#$request->print("Result follows:");
                    686: 	if ($target eq 'modified') {
                    687: 	    &handle_save_or_undo($request,\$problem,\$result);
                    688: 	} else {
                    689: 	    if ($target eq 'analyze') {
                    690: 		$result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
                    691: 		undef(%Apache::lonhomework::analyze);
                    692: 	    }
                    693: 	    #my $td=&tv_interval($t0);
                    694: 	    #if ( $Apache::lonxml::debug) {
                    695: 	    #$result =~ s:</body>::;
                    696: 	    #$result.="<br />Spent $td seconds processing target $target\n</body>";
                    697: 	    #}
1.171     albertel  698: #	    $request->print($result);
                    699: 	    $overall_result.=$result;
                    700: #	    $request->rflush();
1.145     albertel  701: 	}
                    702: 	#$request->print(":Result ends");
                    703: 	#my $td=&tv_interval($t0);
1.52      albertel  704:     }
1.171     albertel  705:     &Apache::lonxml::add_messages(\$overall_result);
                    706:     $request->print($overall_result);   
                    707:     $request->rflush();   
1.41      albertel  708: }
                    709: 
1.42      albertel  710: # with no arg it returns a HTML <option> list of the template titles
                    711: # with one arg it returns the filename associated with the arg passed
                    712: sub get_template_list {
1.145     albertel  713:     my ($namewanted,$extension) = @_;
                    714:     my $result;
                    715:     my @allnames;
                    716:     &Apache::lonxml::debug("Looking for :$extension:");
                    717:     foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
                    718: 	my $name=&Apache::lonnet::metadata($file,'title');
                    719: 	if ($namewanted && ($name eq $namewanted)) {
                    720: 	    $result=$file;
                    721: 	    last;
                    722: 	} else {
                    723: 	    if ($name) { push (@allnames, $name); }
                    724: 	}
                    725:     }
                    726:     if (@allnames && !$result) {
1.146     albertel  727: 	$result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145     albertel  728: 	    join('</option><option>',sort(@allnames)).'</option>';
1.42      albertel  729:     }
1.145     albertel  730:     return $result;
1.42      albertel  731: }
                    732: 
                    733: sub newproblem {
1.65      matthew   734:     my ($request) = @_;
                    735:     my $extension=$request->uri;
                    736:     $extension=~s:^.*\.([\w]+)$:$1:;
                    737:     &Apache::lonxml::debug("Looking for :$extension:");
1.131     albertel  738:     my $templatelist=&get_template_list('',$extension);
1.85      albertel  739:     if ($ENV{'form.template'} &&
1.128     albertel  740: 	$ENV{'form.template'} ne "Select a $extension template") {
1.65      matthew   741: 	use File::Copy;
                    742: 	my $file = &get_template_list($ENV{'form.template'},$extension);
                    743: 	my $dest = &Apache::lonnet::filelocation("",$request->uri);
                    744: 	copy($file,$dest);
                    745: 	&renderpage($request,$dest);
1.131     albertel  746:     } elsif($ENV{'form.newfile'} && !$templatelist) {
                    747: 	# I don't like hard-coded filenames but for now, this will work.
                    748: 	use File::Copy;
                    749: 	my $templatefilename =
                    750: 	    $request->dir_config('lonIncludes').'/templates/blank.problem';
                    751: 	&Apache::lonxml::debug("$templatefilename");
                    752: 	my $dest = &Apache::lonnet::filelocation("",$request->uri);
                    753: 	copy($templatefilename,$dest);
                    754: 	&renderpage($request,$dest);
1.85      albertel  755:     } else {
1.176     albertel  756: 	my $url=&HTML::Entities::encode($request->uri,'<>&"');
                    757: 	my $shownurl=$url;	
1.157     albertel  758: 	$shownurl=~s-^/~-/priv/-;
1.65      matthew   759: 	my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128     albertel  760: 	my $errormsg;
                    761: 	if ($ENV{'form.newfile'}) {
1.146     albertel  762: 	    $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
1.128     albertel  763: 	}
1.85      albertel  764: 	my $instructions;
1.186     albertel  765: 	my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,
                    766: 					($ENV{'environment.remote'} ne 'off'));
1.146     albertel  767: 	if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
1.147     albertel  768: 	my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
1.146     albertel  769: 			  'resource' => 'resource',
                    770: 			  'requested' => 'The requested file',
                    771: 			  'not exist' => 'currently does not exist',
                    772: 			  'createnew' => 'To create a new',
                    773: 			  'click' => 'click on the',
                    774: 			  'Create' => 'Create',
                    775: 			  'button' => 'button');
1.65      matthew   776: 	$request->print(<<ENDNEWPROBLEM);
1.159     www       777: $bodytag
1.148     albertel  778: <h1>$lt{'create'} $extension $lt{'resource'}</h1>
1.128     albertel  779: $errormsg
1.157     albertel  780: $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
1.105     www       781: <p>
1.146     albertel  782: <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
1.105     www       783: </p>
                    784: <p><form action="$url" method="POST">
1.42      albertel  785: ENDNEWPROBLEM
1.85      albertel  786: 	if (defined($templatelist)) {
                    787: 	    $request->print("<select name=\"template\">$templatelist</select>");
                    788: 	}
1.146     albertel  789: 	$request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.105     www       790: 	$request->print("</form></p></body>");
1.65      matthew   791:     }
                    792:     return '';
1.42      albertel  793: }
                    794: 
                    795: sub view_or_edit_menu {
1.145     albertel  796:     my ($request) = @_;
1.176     albertel  797:     my $url=&HTML::Entities::encode($request->uri,'<>&"');
1.147     albertel  798:     my %lt=&Apache::lonlocal::texthash( 'would' => 'Would you like to',
1.146     albertel  799: 		      'view' => 'View',
                    800: 		      'Edit' => 'edit',
                    801: 		      'or' => 'or',
                    802: 		      'the problem' => 'the problem');
1.145     albertel  803:     $request->print(<<EDITMENU);
1.42      albertel  804: <body bgcolor="#FFFFFF">
                    805: <form action="$url" method="POST">
1.170     matthew   806: $lt{'would'} <input type="submit" name="problemmode" accesskey="v" value="&lt{'view'}">
                    807: &lt{'or'} <input type="submit" name="problemmode" accesskey="e" value="&lt{'Edit'}">
1.146     albertel  808: &lt{'the problem'}.
1.42      albertel  809: </form>
                    810: </body>
                    811: EDITMENU
                    812: }
                    813: 
1.41      albertel  814: sub handler {
1.145     albertel  815:     #my $t0 = [&gettimeofday()];
                    816:     my $request=$_[0];
                    817:     
                    818:     $Apache::lonxml::debug=$ENV{'user.debug'};
                    819:     $ENV{'request.uri'}=$request->uri;
1.180     albertel  820:     &setuppermissions();
1.145     albertel  821:     # some times multiple problemmodes are submitted, need to select
                    822:     # the last one
1.193     albertel  823:     if ( defined($ENV{'form.problemmode'}) && ref($ENV{'form.problemmode'}) ) {
1.145     albertel  824: 	my $mode=$ENV{'form.problemmode'}->[-1];
                    825: 	undef $ENV{'form.problemmode'};
                    826: 	$ENV{'form.problemmode'}=$mode;
                    827:     }
1.193     albertel  828: 
1.145     albertel  829:     my $file=&Apache::lonnet::filelocation("",$request->uri);
                    830: 
                    831:     #check if we know where we are
                    832:     if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { 
                    833: 	# if we are browsing we might not be able to know where we are
1.173     albertel  834: 	if ($Apache::lonhomework::browse ne 'F' && 
                    835: 	    $ENV{'request.state'} ne "construct") {
1.145     albertel  836: 	    #should know where we are, so ask
                    837: 	    if ( &Apache::lonnet::mod_perl_version() == 2 ) {
                    838: 		&Apache::lonnet::cleanenv();
                    839: 	    }
1.190     albertel  840: 	    &Apache::lonnet::logthis(&Apache::lonnet::mod_perl_version());
                    841: 	    $request->internal_redirect('/adm/ambiguous'); return OK;
1.145     albertel  842: 	}
                    843:     }
1.187     albertel  844:     if (&setupheader($request)) { return OK; }
1.193     albertel  845:     &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
                    846:     &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
1.145     albertel  847:     my ($symb) = &Apache::lonxml::whichuser();
                    848:     &Apache::lonxml::debug('symb is '.$symb);
                    849:     if ($ENV{'request.state'} eq "construct" || $symb eq '') {
1.150     albertel  850: 	if ($ENV{'form.resetdata'} eq &mt('Reset Submissions') ||
                    851: 	    $ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
                    852: 	    $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.145     albertel  853: 	    my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
                    854: 	    &Apache::lonnet::tmpreset($symb,'',$domain,$name);
                    855: 	    &Apache::lonxml::debug("Attempt reset");
                    856: 	}
                    857:     }
                    858:     if ($ENV{'request.state'} eq "construct") {
                    859: 	if ( -e $file ) {
                    860: 	    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                    861: 						    ['problemmode']);
                    862: 	    if (!(defined $ENV{'form.problemmode'})) {
                    863: 		#first visit to problem in construction space
                    864: 		#&view_or_edit_menu($request);
                    865: 		$ENV{'form.problemmode'}='View';
                    866: 		&renderpage($request,$file);
1.190     albertel  867: 	    } elsif ($ENV{'form.problemmode'} eq &mt('EditXML') ||
1.191     albertel  868: 		     $ENV{'form.problemmode'} eq 'EditXML') {
1.145     albertel  869: 		&editxmlmode($request,$file);
1.150     albertel  870: 	    } elsif ($ENV{'form.problemmode'} eq &mt('Calculate answers')) {
1.145     albertel  871: 		&analyze($request,$file);
                    872: 	    } else {
                    873: 		&renderpage($request,$file);
                    874: 	    }
                    875: 	} else {
                    876: 	    # requested file doesn't exist in contruction space
                    877: 	    &newproblem($request);
                    878: 	}
                    879:     } else {
                    880: 	# just render the page normally outside of construction space
                    881: 	&Apache::lonxml::debug("not construct");
1.52      albertel  882: 	&renderpage($request,$file);
1.41      albertel  883:     }
1.145     albertel  884:     #my $td=&tv_interval($t0);
                    885:     #&Apache::lonxml::debug("Spent $td seconds processing");
                    886:     # &Apache::lonhomework::send_footer($request);
                    887:     # always turn off debug messages
                    888:     $Apache::lonxml::debug=0;
                    889:     return OK;
1.52      albertel  890: 
1.1       albertel  891: }
                    892: 
                    893: 1;
                    894: __END__

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