File:
[LON-CAPA] /
loncom /
homework /
lonhomework.pm
Revision
1.226:
download - view:
text,
annotated -
select for diffs
Mon Nov 21 21:51:29 2005 UTC (19 years, 5 months ago) by
albertel
Branches:
MAIN
CVS tags:
HEAD
- de-appendix slots
- new parm 'useslots' (problems defulat to no, Tasks default to resource)
- make available and availablestudent exist for problems
- problems uses check_slot_access
- problems understand states of 'NOT_IN_A_SLOT' and 'NEEDS_CHECKIN'
# The LearningOnline Network with CAPA
# The LON-CAPA Homework handler
#
# $Id: lonhomework.pm,v 1.226 2005/11/21 21:51:29 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
package Apache::lonhomework;
use strict;
use Apache::style();
use Apache::lonxml();
use Apache::lonnet;
use Apache::lonplot();
use Apache::inputtags();
use Apache::structuretags();
use Apache::randomlabel();
use Apache::response();
use Apache::hint();
use Apache::outputtags();
use Apache::caparesponse();
use Apache::radiobuttonresponse();
use Apache::optionresponse();
use Apache::imageresponse();
use Apache::essayresponse();
use Apache::externalresponse();
use Apache::rankresponse();
use Apache::matchresponse();
use Apache::chemresponse();
use Apache::drawimage();
use Apache::Constants qw(:common);
use HTML::Entities();
use Apache::loncommon();
use Apache::lonlocal;
use Time::HiRes qw( gettimeofday tv_interval );
use Apache::lonnet();
# FIXME - improve commenting
BEGIN {
&Apache::lonxml::register_insert();
}
#
# Decides what targets to render for.
# Implicit inputs:
# Various session environment variables:
# request.state - published - is a /res/ resource
# uploaded - is a /uploaded/ resource
# contruct - is a /priv/ resource
# form.grade_target - a form parameter requesting a specific target
sub get_target {
&Apache::lonxml::debug("request.state = $env{'request.state'}");
if( defined($env{'form.grade_target'})) {
&Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
} else {
&Apache::lonxml::debug("form.grade_target <undefined>");
}
if (($env{'request.state'} eq "published") ||
($env{'request.state'} eq "uploaded")) {
if ( defined($env{'form.grade_target'} )
&& ($env{'form.grade_target'} eq 'tex')) {
return ($env{'form.grade_target'});
} elsif ( defined($env{'form.grade_target'} )
&& ($Apache::lonhomework::viewgrades eq 'F' )) {
return ($env{'form.grade_target'});
}
if ($env{'form.webgrade'} &&
$Apache::lonhomework::modifygrades eq 'F') {
return ('grade','webgrade');
}
if ( defined($env{'form.submitted'}) &&
( !defined($env{'form.resetdata'})) &&
( !defined($env{'form.newrandomization'}))) {
return ('grade', 'web');
} else {
return ('web');
}
} elsif ($env{'request.state'} eq "construct") {
if ( defined($env{'form.grade_target'}) ) {
return ($env{'form.grade_target'});
}
if ( defined($env{'form.preview'})) {
if ( defined($env{'form.submitted'})) {
return ('grade', 'web');
} else {
return ('web');
}
} else {
if ( $env{'form.problemmode'} eq &mt('View') ||
$env{'form.problemmode'} eq &mt('Discard Edits and View')) {
if ( defined($env{'form.submitted'}) &&
(!defined($env{'form.resetdata'})) &&
(!defined($env{'form.newrandomization'}))) {
return ('grade', 'web','answer');
} else {
return ('web','answer');
}
} elsif ( $env{'form.problemmode'} eq &mt('Edit') ||
$env{'form.problemmode'} eq 'Edit') {
if ( $env{'form.submitted'} eq 'edit' ) {
if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
return ('modified','web','answer');
} else {
return ('modified','no_output_web','edit');
}
} else {
return ('no_output_web','edit');
}
} else {
return ('web');
}
}
}
return ();
}
sub setup_vars {
my ($target) = @_;
return ';'
# return ';$external::target='.$target.';';
}
sub send_header {
my ($request)= @_;
$request->print(&Apache::lontexconvert::header());
# $request->print('<form name='.$env{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
}
sub createmenu {
my ($which,$request)=@_;
if ($which eq 'grade') {
$request->print('<script language="JavaScript">
hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
"height=350,width=150,menubar=no");
</script>');
}
}
sub send_footer {
my ($request)= @_;
# $request->print('</form>');
$request->print(&Apache::lontexconvert::footer());
}
sub proctor_checked_in {
my ($slot_name,$slot,$type)=@_;
my @possible_proctors=split(",",$slot->{'proctor'});
my $key;
if ($type eq 'Task') {
my $version=$Apache::lonhomework::history{'resource.version'};
$key ="resource.$version.checkedin";
} elsif ($type eq 'problem') {
$key ='resource.0.checkedin';
}
foreach my $possible (@possible_proctors) {
if ($Apache::lonhomework::history{$key} eq $possible
&& $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
return 1;
}
}
return 0;
}
$Apache::lonxml::browse='';
sub check_ip_acc {
my ($acc)=@_;
&Apache::lonxml::debug("acc is $acc");
if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) {
return 1;
}
my $allowed=0;
my $ip=$ENV{'REMOTE_ADDR'};
my $name;
foreach my $pattern (split(',',$acc)) {
if ($pattern =~ /\*$/) {
#35.8.*
$pattern=~s/\*//;
if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
} elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
#35.8.3.[34-56]
my $low=$2;
my $high=$3;
$pattern=$1;
if ($ip =~ /^\Q$pattern\E/) {
my $last=(split(/\./,$ip))[3];
if ($last <=$high && $last >=$low) { $allowed=1; }
}
} elsif ($pattern =~ /^\*/) {
#*.msu.edu
$pattern=~s/\*//;
if (!defined($name)) {
use Socket;
my $netaddr=inet_aton($ip);
($name)=gethostbyaddr($netaddr,AF_INET);
}
if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
} elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
#127.0.0.1
if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
} else {
#some.name.com
if (!defined($name)) {
use Socket;
my $netaddr=inet_aton($ip);
($name)=gethostbyaddr($netaddr,AF_INET);
}
if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
}
if ($allowed) { last; }
}
return $allowed;
}
sub check_slot_access {
my ($id,$type)=@_;
# does it pass normal muster
my ($status,$datemsg)=&check_access($id);
my $useslots = &Apache::lonnet::EXT("resource.$id.useslots");
if ($useslots ne 'resource') {
return ($status,$datemsg);
}
if ($status eq 'SHOW_ANSWER' ||
$status eq 'CLOSED' ||
$status eq 'INVALID_ACCESS' ||
$status eq 'UNAVAILABLE') {
return ($status,$datemsg);
}
if ($env{'request.state'} eq "construct") {
return ($status,$datemsg);
}
if ($type eq 'Task') {
my $version=$Apache::lonhomework::history{'resource.version'};
if ($Apache::lonhomework::history{"resource.$version.checkedin"} &&
$Apache::lonhomework::history{"resource.$version.status"} eq 'pass') {
return ('SHOW_ANSWER');
}
}
my @slots=
(split(':',&Apache::lonnet::EXT("resource.$id.availablestudent")),
split(':',&Apache::lonnet::EXT("resource.$id.available")));
# if (!@slots) {
# return ($status,$datemsg);
# }
my $slotstatus='NOT_IN_A_SLOT';
my ($returned_slot,$slot_name);
foreach my $slot (@slots) {
&Apache::lonxml::debug("getting $slot");
my %slot=&Apache::lonnet::get_slot($slot);
&Apache::lonhomework::showhash(%slot);
if ($slot{'starttime'} < time &&
$slot{'endtime'} > time &&
&check_ip_acc($slot{'ip'})) {
&Apache::lonxml::debug("$slot is good");
$slotstatus='NEEDS_CHECKIN';
$returned_slot=\%slot;
$slot_name=$slot;
last;
}
}
if ($slotstatus eq 'NEEDS_CHECKIN' &&
&proctor_checked_in($slot_name,$returned_slot,$type)) {
&Apache::lonxml::debug("protoctor checked in");
$slotstatus='CAN_ANSWER';
}
my ($pass_status,$checkedin);
if ($type eq 'Task') {
my $version=$Apache::lonhomework::history{'resource.version'};
$pass_status =
$Apache::lonhomework::history{"resource.$version.status"} eq 'fail';
$checkedin =
$Apache::lonhomework::history{"resource.$version.checkedin"};
} elsif ($type eq 'problem') {
$pass_status = 1;
$checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
}
if ($slotstatus eq 'NOT_IN_A_SLOT'
&& $checkedin ) {
if ($pass_status) {
return ('SHOW_ANSWER');
} else {
return ('WAITING_FOR_GRADE');
}
}
if ( $status eq 'CANNOT_ANSWER' &&
($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
return ($status,$datemsg);
}
return ($slotstatus,$datemsg,$slot_name,$returned_slot);
}
# JB, 9/24/2002: Any changes in this function may require a change
# in lonnavmaps::resource::getDateStatus.
sub check_access {
my ($id) = @_;
my $date ='';
my $status;
my $datemsg = '';
my $lastdate = '';
my $type;
my $passed;
if ($env{'request.state'} eq "construct") {
if ($env{'form.problemstate'}) {
if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
lc($Apache::lonhomework::problemstatus) eq 'no')) {
return ('CANNOT_ANSWER',
&mt('is in this state due to author settings.'));
}
} else {
return ($env{'form.problemstate'},
&mt('is in this state due to author settings.'));
}
}
&Apache::lonxml::debug("in construction ignoring dates");
$status='CAN_ANSWER';
$datemsg=&mt('is in under construction');
# return ($status,$datemsg);
}
&Apache::lonxml::debug("checking for part :$id:");
&Apache::lonxml::debug("time:".time);
my ($symb)=&Apache::lonxml::whichuser();
&Apache::lonxml::debug("symb:".$symb);
#if ($env{'request.state'} ne "construct" && $symb ne '') {
if ($env{'request.state'} ne "construct") {
my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
$status='INVALID_ACCESS';
$date=&mt("can not be accessed from your location.");
return($status,$date);
}
foreach my $temp ("opendate","duedate","answerdate") {
$lastdate = $date;
$date = &Apache::lonnet::EXT("resource.$id.$temp");
my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
if ($thistype =~ /^(con_lost|no_such_host)/ ||
$date =~ /^(con_lost|no_such_host)/) {
$status='UNAVAILABLE';
$date=&mt("may open later.");
return($status,$date);
}
if ($thistype eq 'date_interval') {
if ($temp eq 'opendate') {
$date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
}
if ($temp eq 'answerdate') {
$date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
}
}
&Apache::lonxml::debug("found :$date: for :$temp:");
if ($date eq '') {
$date = &mt("an unknown date"); $passed = 0;
} elsif ($date eq 'con_lost') {
$date = &mt("an indeterminate date"); $passed = 0;
} else {
if (time < $date) { $passed = 0; } else { $passed = 1; }
$date = localtime $date;
}
if (!$passed) { $type=$temp; last; }
}
&Apache::lonxml::debug("have :$type:$passed:");
if ($passed) {
$status='SHOW_ANSWER';
$datemsg=$date;
} elsif ($type eq 'opendate') {
$status='CLOSED';
$datemsg = &mt("will open on")." $date";
} elsif ($type eq 'duedate') {
$status='CAN_ANSWER';
$datemsg = &mt("is due at")." $date";
} elsif ($type eq 'answerdate') {
$status='CLOSED';
$datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
}
}
if ($status eq 'CAN_ANSWER' ||
(($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
#check #tries, and if correct.
my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
if ( $tries eq '' ) { $tries = '0'; }
if ( $maxtries eq '' &&
$env{'request.state'} ne 'construct') { $maxtries = '2'; }
if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
# if (correct and show prob status) or excused then CANNOT_ANSWER
if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
&&
lc($Apache::lonhomework::problemstatus) ne 'no')
||
$Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
$status = 'CANNOT_ANSWER';
}
}
if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
my $interval=&Apache::lonnet::EXT("resource.$id.interval");
&Apache::lonxml::debug("looking for interval $interval");
if ($interval) {
my $first_access=&Apache::lonnet::get_first_access('map');
&Apache::lonxml::debug("looking for accesstime $first_access");
if (!$first_access) {
$status='NOT_YET_VIEWED';
$datemsg=&seconds_to_human_length($interval);
} else {
my $newdate=localtime($first_access+$interval);
if (time > ($first_access+$interval)) {
$status='CLOSED';
$datemsg = &mt("was due on")." $newdate".&mt(", and answers will be available on")." $date";
} else {
$datemsg = &mt("is due at")." $newdate";
}
}
}
}
#if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
# (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
# return ('UNCHECKEDOUT','needs to be checked out');
#}
&Apache::lonxml::debug("sending back :$status:$datemsg:");
if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
&Apache::lonxml::debug("should be allowed to browse a resource when closed");
$status='CAN_ANSWER';
$datemsg=&mt('is closed but you are allowed to view it');
}
return ($status,$datemsg);
}
sub seconds_to_human_length {
my ($length)=@_;
my $seconds=$length%60; $length=int($length/60);
my $minutes=$length%60; $length=int($length/60);
my $hours=$length%24; $length=int($length/24);
my $days=$length;
my $timestr;
if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
if ($hours > 0) { $timestr.=($timestr?", ":"").
&mt('[quant,_1,hour]',$hours); }
if ($minutes > 0) { $timestr.=($timestr?", ":"").
&mt('[quant,_1,minute]',$minutes); }
if ($seconds > 0) { $timestr.=($timestr?", ":"").
&mt('[quant,_1,second]',$seconds); }
return $timestr;
}
sub showhash {
my (%hash) = @_;
&showhashsubset(\%hash,'.');
return '';
}
sub showarray {
my ($array)=@_;
my $string="(";
foreach my $elm (@{ $array }) {
if (ref($elm) eq 'ARRAY') {
$string.=&showarray($elm);
} elsif (ref($elm) eq 'HASH') {
$string.= "HASH --- \n<br />";
$string.= &showhashsubset($elm,'.');
} else {
$string.="$elm,"
}
}
chop($string);
$string.=")";
return $string;
}
sub showhashsubset {
my ($hash,$keyre) = @_;
my $resultkey;
foreach $resultkey (sort keys %$hash) {
if ($resultkey !~ /$keyre/) { next; }
if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
&Apache::lonxml::debug("$resultkey ---- ".
&showarray($$hash{$resultkey}));
} elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
&Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
&showhashsubset($$hash{$resultkey},'.');
} else {
&Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
}
}
&Apache::lonxml::debug("\n<br />restored values^</br>\n");
return '';
}
sub setuppermissions {
$Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
if (! $viewgrades &&
exists($env{'request.course.sec'}) &&
$env{'request.course.sec'} !~ /^\s*$/) {
$viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
'/'.$env{'request.course.sec'});
}
$Apache::lonhomework::viewgrades = $viewgrades; # File global variable...dirt.
if ($Apache::lonhomework::browse eq 'F' &&
$env{'form.devalidatecourseresdata'} eq 'on') {
my (undef,$courseid) = &Apache::lonxml::whichuser();
&Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
$env{"course.$courseid.domain"});
}
my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
if (! $modifygrades &&
exists($env{'request.course.sec'}) &&
$env{'request.course.sec'} !~ /^\s*$/) {
$modifygrades =
&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
'/'.$env{'request.course.sec'});
}
$Apache::lonhomework::modifygrades = $modifygrades;
return '';
}
sub setupheader {
my $request=$_[0];
&Apache::loncommon::content_type($request,'text/html');
if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
&Apache::loncommon::no_cache($request);
}
# $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
# 'lastrevisiondate'));
$request->send_http_header;
return OK if $request->header_only;
return ''
}
sub handle_save_or_undo {
my ($request,$problem,$result) = @_;
my $file = &Apache::lonnet::filelocation("",$request->uri);
my $filebak =$file.".bak";
my $filetmp =$file.".tmp";
my $error=0;
&Apache::lonnet::correct_line_ends($result);
if ($env{'form.Undo'} eq &mt('undo')) {
my $error=0;
if (!copy($file,$filetmp)) { $error=1; }
if ((!$error) && (!copy($filebak,$file))) { $error=1; }
if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
if (!$error) {
&Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
} else {
&Apache::lonxml::info("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");
$error=1;
}
} else {
my $fs=Apache::File->new(">$filebak");
if (defined($fs)) {
print $fs $$problem;
&Apache::lonxml::info("<b>".&mt("Making Backup to").
" $filebak</b>");
} else {
&Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
$error=2;
}
my $fh=Apache::File->new(">$file");
if (defined($fh)) {
print $fh $$result;
&Apache::lonxml::info("<b>".&mt("Saving Modifications to").
" $file</b>");
} else {
&Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".
&mt("Unable to write to")." $file</b></font>");
$error|=4;
}
}
return $error;
}
sub analyze_header {
my ($request) = @_;
my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,
($env{'environment.remote'} ne 'off'));
my $html=&Apache::lonxml::xmlbegin();
my $result.=$html.'
<head><title>'.&mt("Analyzing a problem").'</title></head>
'.$bodytag.&Apache::lonxml::message_location().'
<form name="lonhomework" method="POST" action="'.
&HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
&Apache::structuretags::remember_problem_state().'
<input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
<input type="submit" name="problemmode" value="'.&mt('Edit').'" />
<hr />
<input type="submit" name="submit" value="'.&mt("View").'" />
<hr />
</form>';
&Apache::lonxml::add_messages(\$result);
$request->print($result);
$request->rflush();
}
sub analyze_footer {
my ($request) = @_;
my $result='</body></html>';
$request->print($result);
$request->rflush();
}
sub analyze {
my ($request,$file) = @_;
&Apache::lonxml::debug("Analyze");
my $result;
my %overall;
my %seedexample;
my %allparts;
my $rndseed=$env{'form.rndseed'};
&analyze_header($request);
my %prog_state=
&Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
&mt('Getting Problem Variants'),
$env{'form.numtoanalyze'},
'inline',undef);
for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
&Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
&mt('last problem'));
if (&Apache::loncommon::connection_aborted($request)) { return; }
my $thisseed=$i+$rndseed;
my $subresult=&Apache::lonnet::ssi($request->uri,
('grade_target' => 'analyze'),
('rndseed' => $thisseed));
(my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
my %analyze=&Apache::lonnet::str2hash($subresult);
my @parts;
if (defined(@{ $analyze{'parts'} })) {
@parts=@{ $analyze{'parts'} };
}
foreach my $part (@parts) {
if (!exists($allparts{$part})) {$allparts{$part}=1;};
if ($analyze{$part.'.type'} eq 'numericalresponse' ||
$analyze{$part.'.type'} eq 'stringresponse' ||
$analyze{$part.'.type'} eq 'formularesponse' ) {
my $concatanswer=join("\0",@{ $analyze{$part.'.answer'} });
if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
@{$analyze{$part.'.answer'}}=('<font color="red">'.&mt('Error').'</font>');
}
push( @{ $overall{$part.'.answer'} },
[@{ $analyze{$part.'.answer'} }]);
$seedexample{join("\0",@{ $analyze{$part.'.answer'}})}=$thisseed;
}
}
}
&Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
&mt('Analyzing Results'));
$request->print('<hr />'.&mt('List of possible answers').': ');
foreach my $part (sort(keys(%allparts))) {
if (defined(@{ $overall{$part.'.answer'} })) {
my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
$request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');
my %frequency;
foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
$frequency{join("\0",@{ $answer })}++;
}
$request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
.&mt('click for example').')</th></tr>');
foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
$request->print('<tr><td class="center">'.
join('</td><td class="center">',split("\0",$answer)).
'</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{$answer}.'">'.$frequency{$answer}.
'</a></td></tr>');
}
$request->print('</table>');
} else {
$request->print('<p>'.&mt('Response').' '.$part.' '.
&mt('is not analyzable at this time').'</p>');
}
}
if (scalar(keys(%allparts)) == 0 ) {
$request->print('<p>'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
}
&Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
&analyze_footer($request);
&Apache::lonhomework::showhash(%overall);
return $result;
}
sub editxmlmode {
my ($request,$file) = @_;
my $result;
my $problem=&Apache::lonnet::getfile($file);
if ($problem eq -1) {
&Apache::lonxml::error("<b> ".&mt('Unable to find').
" <i>$file</i></b>");
$problem='';
}
if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) {
my $error=&handle_save_or_undo($request,\$problem,
\$env{'form.editxmltext'});
if (!$error) { $problem=&Apache::lonnet::getfile($file); }
}
&Apache::lonhomework::showhashsubset(\%env,'^form');
if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
&Apache::lonhomework::showhashsubset(\%env,'^form');
$env{'form.problemmode'}='View';
&renderpage($request,$file);
} else {
my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
my $xml_help = '<table><tr><td>'.
&Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
"Problem Editing Help").
'</td><td>'.
&Apache::loncommon::help_open_menu('',undef,undef,undef,5,'Authoring').
'</td></tr></table>';
if ($cols > 80) { $cols = 80; }
if ($cols < 70) { $cols = 70; }
if ($rows < 20) { $rows = 20; }
my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,
($env{'environment.remote'} ne 'off'));
my $html=&Apache::lonxml::xmlbegin();
$result.=$html.$bodytag.
&renderpage($request,$file,['no_output_web'],1).
&Apache::lonxml::message_location().'
<form name="lonhomework" method="POST" action="'.
&HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
&Apache::structuretags::remember_problem_state().'
<input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
<input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
<hr />
<input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
<input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
<input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
<hr />
' . $xml_help . '
<textarea style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
&HTML::Entities::encode($problem,'<>&"').'</textarea>
</form></body></html>';
&Apache::lonxml::add_messages(\$result);
$request->print($result);
}
return '';
}
#
# Render the page in whatever target desired.
#
sub renderpage {
my ($request,$file,$targets,$return_string) = @_;
my @targets = @{$targets || [&get_target()]};
&Apache::lonhomework::showhashsubset(\%env,'form.');
&Apache::lonxml::debug("Running targets ".join(':',@targets));
my $overall_result;
foreach my $target (@targets) {
# FIXME need to do something intelligent when a problem goes
# from viewable to not viewable due to map conditions
#&setuppermissions();
#if ( $Apache::lonhomework::browse ne '2'
# && $Apache::lonhomework::browse ne 'F' ) {
# $request->print(" You most likely shouldn't see me.");
#}
#my $t0 = [&gettimeofday()];
my $output=1;
if ($target eq 'no_output_web') {
$target = 'web'; $output=0;
}
my $problem=&Apache::lonnet::getfile($file);
my $result;
if ($problem eq -1) {
my $filename=(split('/',$file))[-1];
$result.="<b> ".&mt('Unable to find')." <i>$filename</i></b>";
$problem='';
}
my %mystyle;
if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
&Apache::lonxml::debug("Should be parsing now");
$result .= &Apache::lonxml::xmlparse($request, $target, $problem,
&setup_vars($target),%mystyle);
undef($Apache::lonhomework::parsing_a_problem);
if (!$output) { $result = ''; }
#$request->print("Result follows:");
if ($target eq 'modified') {
&handle_save_or_undo($request,\$problem,\$result);
} else {
if ($target eq 'analyze') {
$result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
undef(%Apache::lonhomework::analyze);
}
#my $td=&tv_interval($t0);
#if ( $Apache::lonxml::debug) {
#$result =~ s:</body>::;
#$result.="<br />Spent $td seconds processing target $target\n</body>";
#}
# $request->print($result);
$overall_result.=$result;
# $request->rflush();
}
#$request->print(":Result ends");
#my $td=&tv_interval($t0);
}
if (!$return_string) {
&Apache::lonxml::add_messages(\$overall_result);
$request->print($overall_result);
$request->rflush();
} else {
return $overall_result;
}
}
# with no arg it returns a HTML <option> list of the template titles
# with one arg it returns the filename associated with the arg passed
sub get_template_list {
my ($namewanted,$extension) = @_;
my $result;
my @allnames;
&Apache::lonxml::debug("Looking for :$extension:");
foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
my $name=&Apache::lonnet::metadata($file,'title');
if ($namewanted && ($name eq $namewanted)) {
$result=$file;
last;
} else {
if ($name) { push (@allnames, $name); }
}
}
if (@allnames && !$result) {
$result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
join('</option><option>',sort(@allnames)).'</option>';
}
return $result;
}
sub newproblem {
my ($request) = @_;
my $extension=$request->uri;
$extension=~s:^.*\.([\w]+)$:$1:;
&Apache::lonxml::debug("Looking for :$extension:");
my $templatelist=&get_template_list('',$extension);
if ($env{'form.template'} &&
$env{'form.template'} ne "Select a $extension template") {
use File::Copy;
my $file = &get_template_list($env{'form.template'},$extension);
my $dest = &Apache::lonnet::filelocation("",$request->uri);
copy($file,$dest);
&renderpage($request,$dest);
} elsif($env{'form.newfile'} && !$templatelist) {
# I don't like hard-coded filenames but for now, this will work.
use File::Copy;
my $templatefilename =
$request->dir_config('lonIncludes').'/templates/blank.problem';
&Apache::lonxml::debug("$templatefilename");
my $dest = &Apache::lonnet::filelocation("",$request->uri);
copy($templatefilename,$dest);
&renderpage($request,$dest);
} else {
my $url=&HTML::Entities::encode($request->uri,'<>&"');
my $shownurl=$url;
$shownurl=~s-^/~-/priv/-;
my $dest = &Apache::lonnet::filelocation("",$request->uri);
my $errormsg;
if ($env{'form.newfile'}) {
$errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
}
my $instructions;
my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,
($env{'environment.remote'} ne 'off'));
if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
'resource' => 'resource',
'requested' => 'The requested file',
'not exist' => 'currently does not exist',
'createnew' => 'To create a new',
'click' => 'click on the',
'Create' => 'Create',
'button' => 'button');
$request->print(<<ENDNEWPROBLEM);
$bodytag
<h1>$lt{'create'} $extension $lt{'resource'}</h1>
$errormsg
$lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
<p>
<b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
</p>
<p><form action="$url" method="POST">
ENDNEWPROBLEM
if (defined($templatelist)) {
$request->print("<select name=\"template\">$templatelist</select>");
}
$request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
$request->print("</form></p></body>");
}
return '';
}
sub view_or_edit_menu {
my ($request) = @_;
my $url=&HTML::Entities::encode($request->uri,'<>&"');
my %lt=&Apache::lonlocal::texthash( 'would' => 'Would you like to',
'view' => 'View',
'Edit' => 'edit',
'or' => 'or',
'the problem' => 'the problem');
$request->print(<<EDITMENU);
<body bgcolor="#FFFFFF">
<form action="$url" method="POST">
$lt{'would'} <input type="submit" name="problemmode" accesskey="v" value="<{'view'}">
<{'or'} <input type="submit" name="problemmode" accesskey="e" value="<{'Edit'}">
<{'the problem'}.
</form>
</body>
EDITMENU
}
sub handler {
#my $t0 = [&gettimeofday()];
my $request=$_[0];
$Apache::lonxml::request=$request;
$Apache::lonxml::debug=$env{'user.debug'};
$env{'request.uri'}=$request->uri;
&setuppermissions();
# some times multiple problemmodes are submitted, need to select
# the last one
if ( defined($env{'form.problemmode'}) && ref($env{'form.problemmode'}) ) {
my $mode=$env{'form.problemmode'}->[-1];
undef $env{'form.problemmode'};
$env{'form.problemmode'}=$mode;
}
my $file=&Apache::lonnet::filelocation("",$request->uri);
#check if we know where we are
if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {
# if we are browsing we might not be able to know where we are
if ($Apache::lonhomework::browse ne 'F' &&
$env{'request.state'} ne "construct") {
#should know where we are, so ask
$request->internal_redirect('/adm/ambiguous'); return OK;
}
}
if (&setupheader($request)) { return OK; }
&Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
&Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
my ($symb) = &Apache::lonxml::whichuser();
&Apache::lonxml::debug('symb is '.$symb);
if ($env{'request.state'} eq "construct" || $symb eq '') {
if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
$env{'form.resetdata'} eq &mt('New Problem Variation') ||
$env{'form.newrandomization'} eq &mt('New Randomization')) {
my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
&Apache::lonnet::tmpreset($symb,'',$domain,$name);
&Apache::lonxml::debug("Attempt reset");
}
}
if ($env{'request.state'} eq "construct") {
if ( -e $file ) {
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['problemmode']);
if (!(defined $env{'form.problemmode'})) {
#first visit to problem in construction space
#&view_or_edit_menu($request);
$env{'form.problemmode'}='View';
&renderpage($request,$file);
} elsif ($env{'form.problemmode'} eq &mt('EditXML') ||
$env{'form.problemmode'} eq 'EditXML') {
&editxmlmode($request,$file);
} elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {
&analyze($request,$file);
} else {
&renderpage($request,$file);
}
} else {
# requested file doesn't exist in contruction space
&newproblem($request);
}
} else {
# just render the page normally outside of construction space
&Apache::lonxml::debug("not construct");
&renderpage($request,$file);
}
#my $td=&tv_interval($t0);
#&Apache::lonxml::debug("Spent $td seconds processing");
# &Apache::lonhomework::send_footer($request);
# always turn off debug messages
$Apache::lonxml::debug=0;
return OK;
}
1;
__END__
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