--- loncom/homework/lonhomework.pm 2000/10/05 19:25:38 1.13
+++ loncom/homework/lonhomework.pm 2001/12/04 14:51:19 1.64
@@ -1,5 +1,33 @@
+# The LearningOnline Network with CAPA
# The LON-CAPA Homework handler
+#
+# $Id: lonhomework.pm,v 1.64 2001/12/04 14:51:19 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/
+#
# Guy Albertelli
+# 11/30 Gerd Kortemeyer
+# 6/1,8/17,8/18 Gerd Kortemeyer
package Apache::lonhomework;
use strict;
@@ -8,77 +36,415 @@ use Apache::lonxml;
use Apache::lonnet;
use Apache::inputtags;
use Apache::structuretags;
+use Apache::randomlabel;
use Apache::response;
+use Apache::hint;
+use Apache::outputtags;
+use Apache::Constants qw(:common);
+#use Time::HiRes qw( gettimeofday tv_interval );
-sub handler {
- my $request=shift;
+sub BEGIN {
+ &Apache::lonxml::register_insert();
+}
+
+sub get_target {
+ if ( $ENV{'request.state'} eq "published") {
+ if ( defined($ENV{'form.submitted'})) {
+ return ('grade', 'web');
+ } else {
+ return ('web');
+ }
+ } elsif ($ENV{'request.state'} eq "construct") {
+ if ( defined($ENV{'form.preview'})) {
+ if ( defined($ENV{'form.submitted'})) {
+ return ('grade', 'web');
+ } else {
+ return ('web');
+ }
+ } else {
+ if ( $ENV{'form.problemmode'} eq 'View' ) {
+ if ( defined($ENV{'form.submitted'}) &&
+ (!defined($ENV{'form.resetdata'})) ) {
+ return ('grade', 'web','answer');
+ } else {
+ return ('web','answer');
+ }
+ } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
+ if ( $ENV{'form.submitted'} eq 'edit' ) {
+ return ('modified','edit');
+ } else {
+ return ('edit');
+ }
+ } else {
+ return ('web');
+ }
+ }
+ }
+ return ();
+}
+
+sub setup_vars {
+ my ($target) = @_;
+ return ';'
+# return ';$external::target='.$target.';';
+}
+
+sub send_header {
+ my ($request)= @_;
+ $request->print(&Apache::lontexconvert::header());
+# $request->print('');
+ $request->print(&Apache::lontexconvert::footer());
+}
+
+$Apache::lonxml::browse='';
+
+sub check_access {
+ my ($id) = @_;
+ my $date ='';
+ my $status = '';
+ my $datemsg = '';
+ my $lastdate = '';
+ my $temp;
+ my $type;
+ my $passed;
+ &Apache::lonxml::debug("checking for part :$id:");
+ foreach $temp ("opendate","duedate","answerdate") {
+ $lastdate = $date;
+ $date = &Apache::lonnet::EXT("resource.$id.$temp");
+ &Apache::lonxml::debug("found :$date: for :$temp:");
+ if ($date eq '') {
+ $date = "an unknown date"; $passed = 0;
+ } elsif ($date eq 'con_lost') {
+ $date = "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 = "will open on $date";
+ } elsif ($type eq 'duedate') {
+ $status='CAN_ANSWER';
+ $datemsg = "is due at $date";
+ } elsif ($type eq 'answerdate') {
+ $status='CLOSED';
+ $datemsg = "was due on $lastdate, and answers will be available on $date";
+ }
+ if ($status eq 'CAN_ANSWER') {
+ #check #tries
+ my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
+ my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
+ if ( $tries eq '' ) { $tries = '0'; }
+ if ( $maxtries eq '' ) { $maxtries = '2'; }
+ if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
+ }
+
+ if (($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';
+ $datemsg='is closed but you are allowed to view it';
+ }
+ if ($ENV{'request.state'} eq "construct") {
+ &Apache::lonxml::debug("in construction ignoring dates");
+ $status='CAN_ANSWER';
+ $datemsg='is in under construction';
+ }
+ return ($status,$datemsg);
+}
+
+sub showhash {
+ my (%hash) = @_;
+ my $resultkey;
+ foreach $resultkey (sort keys %hash) {
+ &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}");
+ }
+ &Apache::lonxml::debug("\n
restored values^\n");
+ return '';
+}
- my $target=&get_target();
- $Apache::lonxml::debug=1;
- $request->content_type('text/html');
+sub setuppermissions {
+ $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
+ $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
+ return ''
+}
+
+sub setupheader {
+ my $request=$_[0];
+ if ($ENV{'browser.mathml'}) {
+ $request->content_type('text/xml');
+ } else {
+ $request->content_type('text/html');
+ }
+ if (!$Apache::lonxml::debug) { &Apache::loncommon::no_cache($request); }
$request->send_http_header;
- &Apache::lonhomework::send_header($request);
- my $file = "/home/httpd/html".$request->uri;
- my %mystyle;
- my $result = '';
- &Apache::inputtags::initialize_inputtags;
+ return OK if $request->header_only;
+ return ''
+}
+sub handle_save_or_undo {
+ my ($request,$problem,$result) = @_;
+ my $fileout = &Apache::lonnet::filelocation("",$request->uri);
+ my $filesave=$fileout.".bak";
+ my $error=0;
+
+ if ($ENV{'form.Undo'} eq 'undo') {
+ if (copy($filesave,$fileout)) {
+ $request->print("Undid changes, Copied $filesave to $fileout
");
+ } else {
+ $request->print("Unable to undo, unable to copy $filesave to $fileout
");
+ $error=1;
+ }
+ } else {
+ my $fs=Apache::File->new(">$filesave");
+ if (defined($fs)) {
+ print $fs $$problem;
+ $request->print("Making Backup to $filesave
");
+ } else {
+ $request->print("Unable to make backup $filesave");
+ $error=2;
+ }
+ my $fh=Apache::File->new(">$fileout");
+ if (defined($fh)) {
+ print $fh $$result;
+ $request->print("Saving Modifications to $fileout
");
+ } else {
+ $request->print("Unable to write to $fileout");
+ $error|=4;
+ }
+ }
+ return $error;
+}
+
+sub editxmlmode {
+ my ($request,$file) = @_;
+ my $result;
my $problem=&Apache::lonnet::getfile($file);
if ($problem == -1) {
&Apache::lonxml::error(" Unable to find $file");
$problem='';
}
- my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
- if ($default == -1) {
- &Apache::lonxml::error("Unable to find $file");
- $default='';
+ if (defined($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); }
}
-
- $result = Apache::lonxml::xmlparse($target, $problem,
- $default.&setup_vars($target),%mystyle);
- #$request->print("Result follows:");
+ my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
+ if ($cols > 80) { $cols = 80; }
+ $result.='
+ ';
$request->print($result);
- #$request->print(":Result ends");
- &Apache::lonhomework::send_footer($request);
+ return '';
}
-sub get_target {
- return "web";
+sub renderpage {
+ my ($request,$file) = @_;
+
+ my (@targets) = &get_target();
+ foreach my $target (@targets) {
+ #my $t0 = [&gettimeofday()];
+ my $problem=&Apache::lonnet::getfile($file);
+ if ($problem == -1) {
+ &Apache::lonxml::error(" Unable to find $file");
+ $problem='';
+ }
+
+ my %mystyle;
+ my $result = '';
+ &Apache::inputtags::initialize_inputtags;
+ &Apache::edit::initialize_edit;
+ if ($target eq 'web') {
+ if (&Apache::lonnet::symbread() eq '') {
+ if ($ENV{'request.state'} eq "construct") {
+ } else {
+ $request->print("Browsing or ambiguous reference, submissions ignored
");
+ }
+ }
+ #if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }
+ }
+ #if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); }
+
+ my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
+ if ($default == -1) {
+ &Apache::lonxml::error("Unable to find default_homework.lcpm");
+ $default='';
+ }
+ $result = &Apache::lonxml::xmlparse($target, $problem,
+ $default.&setup_vars($target),%mystyle);
+
+ #$request->print("Result follows:");
+ if ($target eq 'modified') {
+ &handle_save_or_undo($request,\$problem,\$result);
+ } else {
+ #my $td=&tv_interval($t0);
+ #if ( $Apache::lonxml::debug) {
+ #$result =~ s: ::;
+ #$result.="