version 1.5, 2000/08/08 19:14:53
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version 1.61, 2001/10/31 17:44:42
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# The LON-CAPA Homework handler |
# The LON-CAPA Homework handler |
# Guy Albertelli |
# Guy Albertelli |
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# 11/30 Gerd Kortemeyer |
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# 6/1,8/17,8/18 Gerd Kortemeyer |
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package Apache::lonhomework; |
package Apache::lonhomework; |
use strict; |
use strict; |
Line 8 use Apache::lonxml;
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Line 10 use Apache::lonxml;
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use Apache::lonnet; |
use Apache::lonnet; |
use Apache::inputtags; |
use Apache::inputtags; |
use Apache::structuretags; |
use Apache::structuretags; |
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use Apache::randomlabel; |
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use Apache::response; |
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use Apache::hint; |
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use Apache::outputtags; |
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use Apache::Constants qw(:common); |
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#use Time::HiRes qw( gettimeofday tv_interval ); |
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sub handler { |
sub BEGIN { |
my $request=shift; |
&Apache::lonxml::register_insert(); |
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my $target=&get_target(); |
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$request->content_type('text/html'); |
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$request->send_http_header; |
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&Apache::lonhomework::send_header($request); |
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my $file = "/home/httpd/html".$request->uri; |
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my %mystyle; |
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my $result = ''; |
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&Apache::inputtags::initialize_inputtags; |
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if ($target eq "web") { |
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$result = Apache::lonxml::xmlparse($target,'<scriptlib>/res/103/albertel/default_homework</scriptlib>'.&setup_vars($target).&getfile($file),%mystyle); |
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} else { |
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$result = Apache::lonxml::xmlparse($target,&getfile($file),%mystyle); |
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} |
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#$request->print("Result follows:"); |
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$request->print($result); |
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#$request->print(":Result ends"); |
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&Apache::lonhomework::send_footer($request); |
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} |
} |
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sub get_target { |
sub get_target { |
return "edit"; |
if ( $ENV{'request.state'} eq "published") { |
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if ( defined $ENV{'form.submitted'}) { |
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return ('grade', 'web'); |
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} else { |
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return ('web'); |
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} |
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} elsif ($ENV{'request.state'} eq "construct") { |
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if ( defined $ENV{'form.preview'}) { |
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if ( defined $ENV{'form.submitted'}) { |
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return ('grade', 'web'); |
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} else { |
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return ('web'); |
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} |
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} else { |
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if ( $ENV{'form.problemmode'} eq 'View' ) { |
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if ( defined $ENV{'form.submitted'}) { |
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return ('grade', 'web','answer'); |
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} else { |
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return ('web','answer'); |
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} |
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} elsif ( $ENV{'form.problemmode'} eq 'Edit' ) { |
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if ( $ENV{'form.submitted'} eq 'edit' ) { |
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return ('modified','edit'); |
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} else { |
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return ('edit'); |
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} |
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} else { |
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return ('web'); |
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} |
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} |
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} |
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return (); |
} |
} |
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sub setup_vars { |
sub setup_vars { |
my ($target) = @_; |
my ($target) = @_; |
$Apache::lonhomework::target=$target; |
return ';' |
return '<script>$external::target='.$target.';</script>'; |
# return ';$external::target='.$target.';'; |
} |
} |
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sub send_header { |
sub send_header { |
my ($request)= @_; |
my ($request)= @_; |
$request->print('<html>'); |
$request->print(&Apache::lontexconvert::header()); |
$request->print('<form method="POST" action="'.$request->uri.'">'); |
# $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">'); |
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} |
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sub createmenu { |
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my ($which,$request)=@_; |
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if ($which eq 'grade') { |
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$request->print('<script language="JavaScript"> |
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hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote", |
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"height=350,width=150,menubar=no"); |
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</script>'); |
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} |
} |
} |
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sub send_footer { |
sub send_footer { |
my ($request)= @_; |
my ($request)= @_; |
$request->print('</form>'); |
# $request->print('</form>'); |
$request->print('</html>'); |
$request->print(&Apache::lontexconvert::footer()); |
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} |
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$Apache::lonxml::browse=''; |
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sub check_access { |
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my ($id) = @_; |
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my $date =''; |
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my $status = ''; |
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my $datemsg = ''; |
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my $lastdate = ''; |
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my $temp; |
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my $type; |
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my $passed; |
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&Apache::lonxml::debug("checking for part :$id:"); |
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foreach $temp ("opendate","duedate","answerdate") { |
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$lastdate = $date; |
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$date = &Apache::lonnet::EXT("resource.$id.$temp"); |
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&Apache::lonxml::debug("found :$date: for :$temp:"); |
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if ($date eq '') { |
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$date = "an unknown date"; $passed = 0; |
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} elsif ($date eq 'con_lost') { |
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$date = "an indeterminate date"; $passed = 0; |
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} else { |
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if (time < $date) { $passed = 0; } else { $passed = 1; } |
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$date = localtime $date; |
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} |
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if (!$passed) { $type=$temp; last; } |
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} |
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&Apache::lonxml::debug("have :$type:$passed:"); |
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if ($passed) { |
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$status='SHOW_ANSWER'; |
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$datemsg=$date; |
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} elsif ($type eq 'opendate') { |
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$status='CLOSED'; |
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$datemsg = "will open on $date"; |
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} elsif ($type eq 'duedate') { |
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$status='CAN_ANSWER'; |
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$datemsg = "is due at $date"; |
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} elsif ($type eq 'answerdate') { |
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$status='CLOSED'; |
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$datemsg = "was due on $lastdate, and answers will be available on $date"; |
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} |
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if ($status eq 'CAN_ANSWER') { |
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#check #tries |
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my $tries = $Apache::lonhomework::history{"resource.$id.tries"}; |
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my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries"); |
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if ( $tries eq '' ) { $tries = '0'; } |
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if ( $maxtries eq '' ) { $maxtries = '2'; } |
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if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } |
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} |
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if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') && |
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(!$Apache::lonhomework::history{"resource.0.outtoken"})) { |
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return ('UNCHECKEDOUT','needs to be checked out'); |
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} |
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&Apache::lonxml::debug("sending back :$status:$datemsg:"); |
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if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) { |
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&Apache::lonxml::debug("should be allowed to browse a resource when closed"); |
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$status='CAN_ANSWER'; |
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$datemsg='is closed but you are allowed to view it'; |
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} |
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if ($ENV{'request.state'} eq "construct") { |
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&Apache::lonxml::debug("in construction ignoring dates"); |
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$status='CAN_ANSWER'; |
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$datemsg='is in under construction'; |
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} |
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return ($status,$datemsg); |
} |
} |
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sub getfile { |
sub showhash { |
my ($filename) = @_; |
my (%hash) = @_; |
my $a=""; |
my $resultkey; |
&Apache::lonnet::repcopy($filename); |
foreach $resultkey (sort keys %hash) { |
{ |
&Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}"); |
my $fh=Apache::File->new($filename); |
} |
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&Apache::lonxml::debug("\n<br />restored values^</br>\n"); |
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return ''; |
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} |
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while (<$fh>) { |
sub setuppermissions { |
$a .=$_; |
$Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'}); |
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$Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); |
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return '' |
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} |
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sub setupheader { |
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my $request=$_[0]; |
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if ($ENV{'browser.mathml'}) { |
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$request->content_type('text/xml'); |
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} else { |
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$request->content_type('text/html'); |
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} |
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&Apache::loncommon::no_cache($request); |
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$request->send_http_header; |
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return OK if $request->header_only; |
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return '' |
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} |
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sub handle_save_or_undo { |
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my ($request,$problem,$result) = @_; |
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my $fileout = &Apache::lonnet::filelocation("",$request->uri); |
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my $filesave=$fileout.".bak"; |
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if ($ENV{'form.Undo'} eq 'undo') { |
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if (copy($filesave,$fileout)) { |
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$request->print("<b>Undid changes, Copied $filesave to $fileout<br /></b>"); |
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} else { |
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$request->print("<font color=\"red\" size=\"+1\"><b>Unable to undo, unable to copy $filesave to $fileout<br /></b></font>"); |
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} |
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} else { |
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my $fs=Apache::File->new(">$filesave"); |
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if (defined($fs)) { |
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print $fs $$problem; |
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$request->print("<b>Making Backup to $filesave</b><br />"); |
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} else { |
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$request->print("<font color=\"red\" size=\"+1\"><b>Unable to make backup $filesave</b></font>"); |
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} |
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my $fh=Apache::File->new(">$fileout"); |
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if (defined($fh)) { |
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print $fh $$result; |
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$request->print("<b>Saving Modifications to $fileout</b><br />"); |
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} else { |
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$request->print("<font color=\"red\" size=\"+1\"><b>Unable to write to $fileout</b></font>"); |
} |
} |
} |
} |
return $a |
} |
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sub renderpage { |
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my ($request,$file) = @_; |
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my (@targets) = &get_target(); |
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foreach my $target (@targets) { |
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#my $t0 = [&gettimeofday()]; |
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my $problem=&Apache::lonnet::getfile($file); |
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if ($problem == -1) { |
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&Apache::lonxml::error("<b> Unable to find <i>$file</i></b>"); |
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$problem=''; |
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} |
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my %mystyle; |
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my $result = ''; |
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&Apache::inputtags::initialize_inputtags; |
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&Apache::edit::initialize_edit; |
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if ($target eq 'web') { |
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if (&Apache::lonnet::symbread() eq '') { |
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if ($ENV{'request.state'} eq "construct") { |
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} else { |
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$request->print("Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored<br />"); |
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} |
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} |
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#if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); } |
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} |
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if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); } |
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my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); |
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if ($default == -1) { |
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&Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>"); |
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$default=''; |
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} |
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$result = &Apache::lonxml::xmlparse($target, $problem, |
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$default.&setup_vars($target),%mystyle); |
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#$request->print("Result follows:"); |
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if ($target eq 'modified') { |
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&handle_save_or_undo($request,\$problem,\$result); |
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} else { |
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#my $td=&tv_interval($t0); |
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#if ( $Apache::lonxml::debug) { |
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#$result =~ s:</body>::; |
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#$result.="<br />Spent $td seconds processing target $target\n</body>"; |
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#} |
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$request->print($result); |
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} |
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#$request->print(":Result ends"); |
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#my $td=&tv_interval($t0); |
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} |
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} |
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# with no arg it returns a HTML <option> list of the template titles |
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# with one arg it returns the filename associated with the arg passed |
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sub get_template_list { |
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my ($namewanted,$extension) = @_; |
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my $result; |
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&Apache::lonxml::debug("Looking for :$extension:"); |
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foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) { |
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my $name=&Apache::lonnet::metadata($file,'title'); |
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if ($namewanted && ($name eq $namewanted)) { |
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$result=$file; |
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last; |
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} else { |
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$result.="<option>$name</option>"; |
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} |
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} |
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return $result; |
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} |
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sub newproblem { |
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my ($request) = @_; |
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my $extension=$request->uri; |
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$extension=~s:^.*\.([\w]+)$:$1:; |
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&Apache::lonxml::debug("Looking for :$extension:"); |
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if ($ENV{'form.template'}) { |
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use File::Copy; |
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my $file = &get_template_list($ENV{'form.template'},$extension); |
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my $dest = &Apache::lonnet::filelocation("",$request->uri); |
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copy($file,$dest); |
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&renderpage($request,$file); |
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} else { |
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my $templatelist=&get_template_list('',$extension); |
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my $url=$request->uri; |
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my $dest = &Apache::lonnet::filelocation("",$request->uri); |
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$request->print(<<ENDNEWPROBLEM); |
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<body bgcolor="#FFFFFF"> |
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The request file $url doesn\'t exist. You can create a new $extension <br /> |
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<form action="$url" method="POST"> |
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<input type="submit" value="New $extension"><br /> |
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<select name="template"> |
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$templatelist |
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</select> |
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</form> |
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</body> |
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ENDNEWPROBLEM |
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} |
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return ''; |
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} |
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sub view_or_edit_menu { |
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my ($request) = @_; |
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my $url=$request->uri; |
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$request->print(<<EDITMENU); |
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<body bgcolor="#FFFFFF"> |
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<form action="$url" method="POST"> |
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Would you like to <input type="submit" name="problemmode" value="View"> or |
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<input type="submit" name="problemmode" value="Edit"> the problem. |
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</form> |
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</body> |
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EDITMENU |
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} |
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sub handler { |
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#my $t0 = [&gettimeofday()]; |
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my $request=$_[0]; |
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if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} |
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if (&setupheader($request)) { return OK; } |
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$ENV{'request.uri'}=$request->uri; |
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#setup permissions |
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$Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'}); |
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$Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); |
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&Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:"); |
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my $file=&Apache::lonnet::filelocation("",$request->uri); |
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#check if we know where we are |
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if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { |
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# if we are browsing we might not be able to know where we are |
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if ($Apache::lonhomework::browse ne 'F') { |
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#should know where we are, so ask |
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$request->internal_redirect('/adm/ambiguous'); return; |
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} |
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} |
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if ($ENV{'request.state'} eq "construct") { |
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if ( -e $file ) { |
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if (!(defined $ENV{'form.problemmode'})) { |
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#first visit to problem in construction space |
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&view_or_edit_menu($request); |
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#&renderpage($request,$file); |
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} else { |
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&renderpage($request,$file); |
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} |
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} else { |
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# requested file doesn't exist in contruction space |
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&newproblem($request); |
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} |
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} else { |
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# just render the page normally outside of construction space |
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&renderpage($request,$file); |
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} |
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#my $td=&tv_interval($t0); |
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#&Apache::lonxml::debug("Spent $td seconds processing"); |
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# &Apache::lonhomework::send_footer($request); |
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# always turn off debug messages |
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$Apache::lonxml::debug=0; |
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return OK; |
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} |
} |
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1; |
1; |