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Diff for /loncom/homework/lonhomework.pm between versions 1.223 and 1.304

version 1.223, 2005/11/15 18:23:17 version 1.304, 2009/03/04 16:00:14
Line 49  use Apache::matchresponse(); Line 49  use Apache::matchresponse();
 use Apache::chemresponse();  use Apache::chemresponse();
 use Apache::drawimage();  use Apache::drawimage();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use HTML::Entities();  
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Time::HiRes qw( gettimeofday tv_interval );  use Time::HiRes qw( gettimeofday tv_interval );
 use Apache::lonnet();  use HTML::Entities();
   use File::Copy();
   
 # FIXME - improve commenting  # FIXME - improve commenting
   
Line 63  BEGIN { Line 63  BEGIN {
 }  }
   
   
   =pod
   
   =item set_bubble_lines()
   
   Called at analysis time to set the bubble lines
   hash for the problem.. This should be called in the
   end_problemtype tag in analysis mode.
   
   We fetch the hash of part id counters from lonxml
       and push them into analyze:{part_id.bubble_lines}.
   
   =cut
   
   sub set_bubble_lines {
       my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
   
       foreach my $key (keys(%bubble_counters)) {
    $Apache::lonhomework::analyze{"$key.bubble_lines"} =
       $bubble_counters{"$key"};
       }
   }
   
 #  #
 # Decides what targets to render for.  # Decides what targets to render for.
 # Implicit inputs:  # Implicit inputs:
Line 86  sub get_target { Line 108  sub get_target {
  } elsif ( defined($env{'form.grade_target'}  )    } elsif ( defined($env{'form.grade_target'}  ) 
   && ($Apache::lonhomework::viewgrades eq 'F' )) {    && ($Apache::lonhomework::viewgrades eq 'F' )) {
     return ($env{'form.grade_target'});      return ($env{'form.grade_target'});
    } elsif ( $env{'form.grade_target'} eq 'webgrade'
     && ($Apache::lonhomework::queuegrade eq 'F' )) {
       return ($env{'form.grade_target'});
  }   }
  if ($env{'form.webgrade'} &&   if ($env{'form.webgrade'} &&
     $Apache::lonhomework::modifygrades eq 'F') {      ($Apache::lonhomework::modifygrades eq 'F'
        || $Apache::lonhomework::queuegrade eq 'F' )) {
     return ('grade','webgrade');      return ('grade','webgrade');
  }   }
  if ( defined($env{'form.submitted'}) &&   if ( defined($env{'form.submitted'}) &&
      ( !defined($env{'form.resetdata'})) &&  
      ( !defined($env{'form.newrandomization'}))) {       ( !defined($env{'form.newrandomization'}))) {
     return ('grade', 'web');      return ('grade', 'web');
  } else {   } else {
Line 109  sub get_target { Line 134  sub get_target {
  return ('web');   return ('web');
     }      }
  } else {   } else {
     if ( $env{'form.problemmode'} eq &mt('View') ||      if ($env{'form.problemstate'} eq 'WEB_GRADE') {
  $env{'form.problemmode'} eq &mt('Discard Edits and View')) {   #$env{'form.webgrade'} = 'yes';
    return ('grade','webgrade','answer');
       } elsif (($env{'form.problemmode'} eq 'view') ||
        ($env{'form.problemmode'} eq 'discard')) {
  if ( defined($env{'form.submitted'}) &&   if ( defined($env{'form.submitted'}) &&
      (!defined($env{'form.resetdata'})) &&       (!defined($env{'form.resetdata'})) &&
      (!defined($env{'form.newrandomization'}))) {       (!defined($env{'form.newrandomization'}))) {
Line 118  sub get_target { Line 146  sub get_target {
  } else {   } else {
     return ('web','answer');      return ('web','answer');
  }   }
     } elsif ( $env{'form.problemmode'} eq &mt('Edit') ||      } elsif ($env{'form.problemmode'} eq 'edit') {
       $env{'form.problemmode'} eq 'Edit') {  
  if ( $env{'form.submitted'} eq 'edit' ) {   if ( $env{'form.submitted'} eq 'edit' ) {
     if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {      if ( $env{'form.submitbutton'} eq &mt('Save and View') ) {
  return ('modified','web','answer');   return ('modified','web','answer');
     } else {      } else {
  return ('modified','no_output_web','edit');   return ('modified','no_output_web','edit');
Line 143  sub setup_vars { Line 170  sub setup_vars {
 #  return ';$external::target='.$target.';';  #  return ';$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 {  sub createmenu {
     my ($which,$request)=@_;      my ($which,$request)=@_;
     if ($which eq 'grade') {      if ($which eq 'grade') {
Line 159  sub createmenu { Line 180  sub createmenu {
     }      }
 }  }
   
 sub send_footer {  
     my ($request)= @_;  
 #  $request->print('</form>');  
     $request->print(&Apache::lontexconvert::footer());  
 }  
   
 sub proctor_checked_in {  sub proctor_checked_in {
     my ($slot_name,$slot)=@_;      my ($slot_name,$slot,$type)=@_;
     my @allowed=split(",",$slot->{'proctor'});      my @possible_proctors=split(",",$slot->{'proctor'});
     my $version=$Apache::lonhomework::history{'resource.version'};      
     foreach my $possible (@allowed) {       return 1 if (!@possible_proctors);
  if ($Apache::lonhomework::history{"resource.$version.checkedin"} eq  
     $possible &&      my $key;
     $Apache::lonhomework::history{"resource.$version.checkedin.slot"}      if ($type eq 'Task') {
        eq $slot_name) {   my $version=$Apache::lonhomework::history{'resource.0.version'};
    $key ="resource.$version.0.checkedin";
       } elsif ($type eq 'problem') {
    $key ='resource.0.checkedin';
       }
       # backward compatability, used to be username@domain, 
       # now is username:domain
       my $who = $Apache::lonhomework::history{$key};
       if ($who !~ /:/) {
    $who =~ tr/@/:/;
       }     
       foreach my $possible (@possible_proctors) { 
    if ($who eq $possible
       && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
     return 1;      return 1;
  }   }
     }      }
       
     return 0;      return 0;
 }  }
   
 $Apache::lonxml::browse='';  sub check_slot_access {
 sub check_ip_acc {      my ($id,$type)=@_;
     my ($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_task_access {  
     # does it pass normal muster      # does it pass normal muster
     # yes we really do want the default args passing      my ($status,$datemsg)=&check_access($id);
     my ($status,$datemsg)=&check_access;      
       my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
       if ($useslots ne 'resource' && $useslots ne 'map' 
    && $useslots ne 'map_map') {
    return ($status,$datemsg);
       }
   
     if ($status eq 'SHOW_ANSWER' ||      if ($status eq 'SHOW_ANSWER' ||
  $status eq 'CLOSED' ||   $status eq 'CLOSED' ||
  $status eq 'CANNOT_ANSWER' ||  
  $status eq 'INVALID_ACCESS' ||   $status eq 'INVALID_ACCESS' ||
  $status eq 'UNAVAILABLE') {   $status eq 'UNAVAILABLE') {
  return ($status,$datemsg);   return ($status,$datemsg);
Line 244  sub check_task_access { Line 230  sub check_task_access {
     if ($env{'request.state'} eq "construct") {      if ($env{'request.state'} eq "construct") {
  return ($status,$datemsg);   return ($status,$datemsg);
     }      }
     my $version=$Apache::lonhomework::history{'resource.version'};      
     if ($Apache::lonhomework::history{"resource.$version.checkedin"} &&      if ($type eq 'Task') {
  $Apache::lonhomework::history{"resource.$version.status"} eq 'pass') {   my $version=$Apache::lonhomework::history{'resource.version'};
  return ('SHOW_ANSWER');   if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
       $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
       return ('SHOW_ANSWER');
    }
     }      }
     my ($id)=@_;  
     my @slots=      my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent");
  (split(':',&Apache::lonnet::EXT("resource.$id.availablestudent")),      my $available = &Apache::lonnet::EXT("resource.0.available");
  split(':',&Apache::lonnet::EXT("resource.$id.available")));      my @slots= (split(':',$availablestudent),split(':',$available));
   
 #    if (!@slots) {  #    if (!@slots) {
 # return ($status,$datemsg);  # return ($status,$datemsg);
Line 260  sub check_task_access { Line 249  sub check_task_access {
     my $slotstatus='NOT_IN_A_SLOT';      my $slotstatus='NOT_IN_A_SLOT';
     my ($returned_slot,$slot_name);      my ($returned_slot,$slot_name);
     foreach my $slot (@slots) {      foreach my $slot (@slots) {
    $slot =~ s/(^\s*|\s*$)//g;
  &Apache::lonxml::debug("getting $slot");   &Apache::lonxml::debug("getting $slot");
  my %slot=&Apache::lonnet::get_slot($slot);   my %slot=&Apache::lonnet::get_slot($slot);
  &Apache::lonhomework::showhash(%slot);   &Apache::lonhomework::showhash(%slot);
  if ($slot{'starttime'} < time &&   if ($slot{'starttime'} < time &&
     $slot{'endtime'} > time &&      $slot{'endtime'} > time &&
     &check_ip_acc($slot{'ip'})) {      &Apache::loncommon::check_ip_acc($slot{'ip'})) {
     &Apache::lonxml::debug("$slot is good");      &Apache::lonxml::debug("$slot is good");
     $slotstatus='NEEDS_CHECKIN';      $slotstatus='NEEDS_CHECKIN';
     $returned_slot=\%slot;      $returned_slot=\%slot;
Line 274  sub check_task_access { Line 264  sub check_task_access {
  }   }
     }      }
     if ($slotstatus eq 'NEEDS_CHECKIN' &&      if ($slotstatus eq 'NEEDS_CHECKIN' &&
  &proctor_checked_in($slot_name,$returned_slot)) {   &proctor_checked_in($slot_name,$returned_slot,$type)) {
  &Apache::lonxml::debug("protoctor checked in");   &Apache::lonxml::debug("protoctor checked in");
  $slotstatus='CAN_ANSWER';   $slotstatus='CAN_ANSWER';
     }      }
     if ( $slotstatus eq 'NOT_IN_A_SLOT' &&   
  $Apache::lonhomework::history{"resource.$version.checkedin"}) {      my ($is_correct,$got_grade,$checkedin);
  if ($Apache::lonhomework::history{"resource.$version.status"} eq 'fail') {      if ($type eq 'Task') {
    my $version=$Apache::lonhomework::history{'resource.0.version'};
    $got_grade = 
       ($Apache::lonhomework::history{"resource.$version.0.status"} 
        =~ /^(?:pass|fail)$/);
    $is_correct =  
       ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
        || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
    $checkedin =
       $Apache::lonhomework::history{"resource.$version.0.checkedin"};
       } elsif ($type eq 'problem') {
    $got_grade  = 1;
    $checkedin  = $Apache::lonhomework::history{"resource.0.checkedin"};
    $is_correct =
       ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
       }
       
       &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
       
       # no slot is currently open, and has been checked in for this version
       # but hasn't got a grade, therefore must be awaiting a grade
       if (!defined($slot_name)
    && $checkedin 
    && !$got_grade) {
    return ('WAITING_FOR_GRADE');
       }
   
       # no slot is currently open, and has been checked in for this version
       # previous slot is therefore CLOSED, so therefore the problem is
       if (!defined($slot_name)
    && $checkedin 
    && $type eq 'problem') {
    return ('CLOSED',$datemsg);
       }
   
       if ($slotstatus eq 'NOT_IN_A_SLOT' 
    && $checkedin ) {
   
    if ($got_grade) {
     return ('SHOW_ANSWER');      return ('SHOW_ANSWER');
  } else {   } else {
     return ('WAITING_FOR_GRADE');      return ('WAITING_FOR_GRADE');
  }   }
   
       }
   
       if ( $is_correct) {
    if ($type eq 'problem') {
       return ($status);
    }
    return ('SHOW_ANSWER');
     }      }
   
       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);      return ($slotstatus,$datemsg,$slot_name,$returned_slot);
 }  }
   
Line 297  sub check_access { Line 339  sub check_access {
     my $status;      my $status;
     my $datemsg = '';      my $datemsg = '';
     my $lastdate = '';      my $lastdate = '';
     my $temp;  
     my $type;      my $type;
     my $passed;      my $passed;
   
     if ($env{'request.state'} eq "construct") {      if ($env{'request.state'} eq "construct") {
  if ($env{'form.problemstate'}) {   if ($env{'form.problemstate'}) {
     if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {      if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
  if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&   if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' 
  lc($Apache::lonhomework::problemstatus) eq 'no')) {   && &hide_problem_status())) {
     return ('CANNOT_ANSWER',      return ('CANNOT_ANSWER',
     &mt('is in this state due to author settings.'));      &mt('is in this state due to author settings.'));
  }   }
Line 323  sub check_access { Line 364  sub check_access {
     &Apache::lonxml::debug("checking for part :$id:");      &Apache::lonxml::debug("checking for part :$id:");
     &Apache::lonxml::debug("time:".time);      &Apache::lonxml::debug("time:".time);
   
     my ($symb)=&Apache::lonxml::whichuser();      my ($symb)=&Apache::lonnet::whichuser();
     &Apache::lonxml::debug("symb:".$symb);      &Apache::lonxml::debug("symb:".$symb);
     #if ($env{'request.state'} ne "construct" && $symb ne '') {      #if ($env{'request.state'} ne "construct" && $symb ne '') {
     if ($env{'request.state'} ne "construct") {      if ($env{'request.state'} ne "construct") {
  my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));          my $idacc = &Apache::lonnet::EXT("resource.$id.acc");
    my $allowed=&Apache::loncommon::check_ip_acc($idacc);
  if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {   if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
     $status='INVALID_ACCESS';      $status='INVALID_ACCESS';
     $date=&mt("can not be accessed from your location.");      $date=&mt("can not be accessed from your location.");
     return($status,$date);      return($status,$date);
  }   }
   
  foreach $temp ("opendate","duedate","answerdate") {   foreach my $temp ("opendate","duedate","answerdate") {
     $lastdate = $date;      $lastdate = $date;
     $date = &Apache::lonnet::EXT("resource.$id.$temp");      if ($temp eq 'duedate') {
    $date = &due_date($id);
       } else {
    $date = &Apache::lonnet::EXT("resource.$id.$temp");
       }
       
     my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");      my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
     if ($thistype =~ /^(con_lost|no_such_host)/ ||      if ($thistype =~ /^(con_lost|no_such_host)/ ||
  $date     =~ /^(con_lost|no_such_host)/) {   $date     =~ /^(con_lost|no_such_host)/) {
Line 359  sub check_access { Line 406  sub check_access {
  $date = &mt("an indeterminate date"); $passed = 0;   $date = &mt("an indeterminate date"); $passed = 0;
     } else {      } else {
  if (time < $date) { $passed = 0; } else { $passed = 1; }   if (time < $date) { $passed = 0; } else { $passed = 1; }
  $date = localtime $date;   $date = &Apache::lonlocal::locallocaltime($date);
     }      }
     if (!$passed) { $type=$temp; last; }      if (!$passed) { $type=$temp; last; }
  }   }
Line 390  sub check_access { Line 437  sub check_access {
  # if (correct and show prob status) or excused then CANNOT_ANSWER   # if (correct and show prob status) or excused then CANNOT_ANSWER
  if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/   if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
     &&      &&
     lc($Apache::lonhomework::problemstatus) ne 'no')      &show_problem_status())
    ||     ||
    $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {     $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
     $status = 'CANNOT_ANSWER';      $status = 'CANNOT_ANSWER';
  }   }
    if ($status eq 'CANNOT_ANSWER'
       && &show_answer_problem_status()) {
       $status = 'SHOW_ANSWER';
    }
     }      }
     if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {      if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
  my $interval=&Apache::lonnet::EXT("resource.$id.interval");   my @interval=&Apache::lonnet::EXT("resource.$id.interval");
  &Apache::lonxml::debug("looking for interval $interval");   &Apache::lonxml::debug("looking for interval @interval");
  if ($interval) {   if ($interval[0]) {
     my $first_access=&Apache::lonnet::get_first_access('map');      my $first_access=&Apache::lonnet::get_first_access($interval[1]);
     &Apache::lonxml::debug("looking for accesstime $first_access");      &Apache::lonxml::debug("looking for accesstime $first_access");
     if (!$first_access) {      if (!$first_access) {
  $status='NOT_YET_VIEWED';   $status='NOT_YET_VIEWED';
  $datemsg=&seconds_to_human_length($interval);   my $due_date = &due_date($id);
     } else {   my $seconds_left = $due_date - time;
  my $newdate=localtime($first_access+$interval);   if ($seconds_left > $interval[0] || $due_date eq '') {
  if (time > ($first_access+$interval)) {      $seconds_left = $interval[0];
     $status='CLOSED';  
     $datemsg = &mt("was due on")." $newdate".&mt(", and answers will be available on")." $date";  
  } else {  
     $datemsg = &mt("is due at")." $newdate";  
  }   }
    $datemsg=&seconds_to_human_length($seconds_left);
     }      }
  }   }
     }      }
   
   #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&    #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
   #    (!$Apache::lonhomework::history{"resource.0.outtoken"})) {    #    (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
   #    return ('UNCHECKEDOUT','needs to be checked out');    #    return ('UNCHECKEDOUT','needs to be checked out');
Line 431  sub check_access { Line 480  sub check_access {
   
     return ($status,$datemsg);      return ($status,$datemsg);
 }  }
   # this should work exactly like the copy in lonnavmaps.pm
   sub due_date {
       my ($part_id,$symb,$udom,$uname)=@_;
       my $date;
       my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
          $udom,$uname);
       &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
       my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
          $udom,$uname);
       &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
       if ($interval[0] =~ /\d+/) {
    my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
    &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
    if (defined($first_access)) {
       my $interval = $first_access+$interval[0];
       $date = (!$due_date || $interval < $due_date) ? $interval
                                                             : $due_date;
    } else {
       $date = $due_date;
    }
       } else {
    $date = $due_date;
       }
       return $date
   }
   
 sub seconds_to_human_length {  sub seconds_to_human_length {
     my ($length)=@_;      my ($length)=@_;
Line 503  sub setuppermissions { Line 577  sub setuppermissions {
  $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.   $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
                                                '/'.$env{'request.course.sec'});                                                 '/'.$env{'request.course.sec'});
     }      }
     $Apache::lonhomework::viewgrades = $viewgrades; # File global variable...dirt.      $Apache::lonhomework::viewgrades = $viewgrades;
   
     if ($Apache::lonhomework::browse eq 'F' &&       if ($Apache::lonhomework::browse eq 'F' && 
  $env{'form.devalidatecourseresdata'} eq 'on') {   $env{'form.devalidatecourseresdata'} eq 'on') {
  my (undef,$courseid) = &Apache::lonxml::whichuser();   my (undef,$courseid) = &Apache::lonnet::whichuser();
  &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},   &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
       $env{"course.$courseid.domain"});        $env{"course.$courseid.domain"});
     }      }
   
     my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});      my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
     if (! $modifygrades &&       if (! $modifygrades && 
  exists($env{'request.course.sec'}) &&    exists($env{'request.course.sec'}) && 
Line 519  sub setuppermissions { Line 595  sub setuppermissions {
      '/'.$env{'request.course.sec'});       '/'.$env{'request.course.sec'});
     }      }
     $Apache::lonhomework::modifygrades = $modifygrades;      $Apache::lonhomework::modifygrades = $modifygrades;
   
       my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
       if (! $queuegrade && 
    exists($env{'request.course.sec'}) && 
    $env{'request.course.sec'} !~ /^\s*$/) {
    $queuegrade = 
       &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
        '/'.$env{'request.course.sec'});
       }
       $Apache::lonhomework::queuegrade = $queuegrade;
     return '';      return '';
 }  }
   
   sub unset_permissions {
       undef($Apache::lonhomework::queuegrade);
       undef($Apache::lonhomework::modifygrades);
       undef($Apache::lonhomework::viewgrades);
       undef($Apache::lonhomework::browse);
   }
   
 sub setupheader {  sub setupheader {
     my $request=$_[0];      my $request=$_[0];
     &Apache::loncommon::content_type($request,'text/html');      &Apache::loncommon::content_type($request,'text/html');
Line 541  sub handle_save_or_undo { Line 634  sub handle_save_or_undo {
     my $filebak =$file.".bak";      my $filebak =$file.".bak";
     my $filetmp =$file.".tmp";      my $filetmp =$file.".tmp";
     my $error=0;      my $error=0;
   
     &Apache::lonnet::correct_line_ends($result);  
   
     if ($env{'form.Undo'} eq &mt('undo')) {      if ($env{'form.Undo'} eq &mt('undo')) {
  my $error=0;   my $error=0;
  if (!copy($file,$filetmp)) { $error=1; }   if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
  if ((!$error) && (!copy($filebak,$file))) { $error=1; }   if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
  if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }   if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
  if (!$error) {   if (!$error) {
     &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");      &Apache::lonxml::info("<p><b>".
     &mt("Undid changes, Switched [_1] and [_2]",
         '<span class="LC_filename">'.$filebak.
         '</span>',
         '<span class="LC_filename">'.$file.
         '</span>')."</b></p>");
  } else {   } 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>");      &Apache::lonxml::info("<p><span class=\"LC_error\">".
     &mt("Unable to undo, unable to switch [_1] and [_2]",
         '<span class="LC_filename">'.
         $filebak.'</span>',
         '<span class="LC_filename">'.
         $file.'</span>')."</span></p>");
     $error=1;      $error=1;
  }   }
     } else {      } else {
           &Apache::lonnet::correct_line_ends($result);
  my $fs=Apache::File->new(">$filebak");   my $fs=Apache::File->new(">$filebak");
  if (defined($fs)) {   if (defined($fs)) {
     print $fs $$problem;      print $fs $$problem;
     &Apache::lonxml::info("<b>".&mt("Making Backup to").  
   " $filebak</b>");  
  } else {   } else {
     &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");      &Apache::lonxml::info("<span class=\"LC_error\">".
     &mt("Unable to make backup [_1]",
         '<span class="LC_filename">'.
         $filebak.'</span>')."</span>");
     $error=2;      $error=2;
  }   }
  my $fh=Apache::File->new(">$file");   my $fh=Apache::File->new(">$file");
  if (defined($fh)) {   if (defined($fh)) {
     print $fh $$result;      print $fh $$result;
     &Apache::lonxml::info("<b>".&mt("Saving Modifications to").  
   " $file</b>");  
  } else {   } else {
     &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".      &Apache::lonxml::info('<span class="LC_error">'.
   &mt("Unable to write to")." $file</b></font>");    &mt("Unable to write to [_1]",
         '<span class="LC_filename">'.
         $file.'</span>').
     '</span>');
     $error|=4;      $error|=4;
  }   }
     }      }
Line 581  sub handle_save_or_undo { Line 684  sub handle_save_or_undo {
   
 sub analyze_header {  sub analyze_header {
     my ($request) = @_;      my ($request) = @_;
     my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,      my $js = &Apache::structuretags::setmode_javascript();
     ($env{'environment.remote'} ne 'off'));      my $result =
     my $html=&Apache::lonxml::xmlbegin();   &Apache::loncommon::start_page('Analyzing a problem',$js);
     my $result.=$html.'  
             <head><title>'.&mt("Analyzing a problem").'</title></head>      $result .= 
             '.$bodytag.&Apache::lonxml::message_location().'   &Apache::lonxml::message_location().'
             <form name="lonhomework" method="POST" action="'.              <form name="lonhomework" method="POST" action="'.
     &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.      &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
               '<input type="hidden" name="problemmode" value="'.
               $env{'form.problemmode'}.'" />'.
     &Apache::structuretags::remember_problem_state().'      &Apache::structuretags::remember_problem_state().'
             <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />              <div class="LC_edit_problem_analyze_header">
             <input type="submit" name="problemmode" value="'.&mt('Edit').'" />              <input type="button" name="submitmode" value="'.&mt("EditXML").'" '.
             <hr />              'onclick="javascript:setmode(this.form,'."'editxml'".')" />
             <input type="submit" name="submit" value="'.&mt("View").'" />              <input type="button" name="submitmode" value="'.&mt('Edit').'" '.
             <hr />              'onclick="javascript:setmode(this.form,'."'edit'".')" />
               <hr class="LC_edit_problem_divide" />
               <input type="button" name="submitmode" value="'.&mt("View").'" '.
               'onclick="javascript:setmode(this.form,'."'view'".')" />
               <hr class="LC_edit_problem_divide" />
               </div>
             </form>';              </form>';
     &Apache::lonxml::add_messages(\$result);      &Apache::lonxml::add_messages(\$result);
     $request->print($result);      $request->print($result);
Line 603  sub analyze_header { Line 713  sub analyze_header {
   
 sub analyze_footer {  sub analyze_footer {
     my ($request) = @_;      my ($request) = @_;
     my $result='</body></html>';      $request->print(&Apache::loncommon::end_page());
     $request->print($result);  
     $request->rflush();      $request->rflush();
 }  }
   
Line 641  sub analyze { Line 750  sub analyze {
     if ($analyze{$part.'.type'} eq 'numericalresponse' ||      if ($analyze{$part.'.type'} eq 'numericalresponse' ||
  $analyze{$part.'.type'} eq 'stringresponse' ||   $analyze{$part.'.type'} eq 'stringresponse' ||
  $analyze{$part.'.type'} eq 'formularesponse'   ) {   $analyze{$part.'.type'} eq 'formularesponse'   ) {
  my $concatanswer=join("\0",@{ $analyze{$part.'.answer'} });   foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
  if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {      my $i=0;
     @{$analyze{$part.'.answer'}}=('<font color="red">'.&mt('Error').'</font>');      foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
  }   push( @{ $overall{$part.'.answer'}[$i] },
  push( @{ $overall{$part.'.answer'} },        $answer_part);
       [@{ $analyze{$part.'.answer'} }]);   my $concatanswer= join("\0",@{ $answer_part });
                 $seedexample{join("\0",@{ $analyze{$part.'.answer'}})}=$thisseed;   if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
       $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
    }
    $seedexample{join("\0",$part,$i,@{$answer_part})}=
       $thisseed;
    $i++;
       }
    }
    if (!keys(%{ $analyze{$part.'.answer'} })) {
       my $answer_part = 
    ['<span class="LC_error">'.&mt('Error').'</span>'];
       $seedexample{join("\0",$part,0,@{$answer_part})}=
    $thisseed;
       push( @{ $overall{$part.'.answer'}[0] },
     $answer_part);
    }
     }      }
  }   }
     }      }
     &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,      &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
   &mt('Analyzing Results'));    &mt('Analyzing Results'));
     $request->print('<hr />'.&mt('List of possible answers').': ');      $request->print('<hr class="LC_edit_problem_divide" />'.&mt('List of possible answers').': ');
     foreach my $part (sort(keys(%allparts))) {      foreach my $part (sort(keys(%allparts))) {
  if (defined(@{ $overall{$part.'.answer'} })) {   if (defined(@{ $overall{$part.'.answer'} })) {
     my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });      for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
     $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');   my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
     my %frequency;   $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part);
     foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {   if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
  $frequency{join("\0",@{ $answer })}++;      $request->print(&mt(' Answer [_1]',$i+1));
     }   }
     $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('   $request->print('</th></tr>');
     .&mt('click for example').')</th></tr>');   my %frequency;
     foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {   foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
  $request->print('<tr><td class="center">'.      $frequency{join("\0",@{ $answer })}++;
  join('</td><td class="center">',split("\0",$answer)).   }
  '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{$answer}.'">'.$frequency{$answer}.   $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
  '</a></td></tr>');   .&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{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.
       '</a></td></tr>');
    }
    $request->print('</table>');
     }      }
     $request->print('</table>');  
  } else {   } else {
     $request->print('<p>'.&mt('Response').' '.$part.' '.      $request->print('<p>'.&mt('Response').' '.$part.' '.
     &mt('is not analyzable at this time').'</p>');      &mt('is not analyzable at this time').'</p>');
Line 685  sub analyze { Line 815  sub analyze {
     return $result;      return $result;
 }  }
   
   {
       my $show_problem_status;
       sub reset_show_problem_status {
    undef($show_problem_status);
       }
   
       sub set_show_problem_status {
    my ($new_status) = @_;
    $show_problem_status = lc($new_status);
       }
   
       sub hide_problem_status {
    return ($show_problem_status eq 'no'
    || $show_problem_status eq 'no_feedback_ever');
       }
   
       sub show_problem_status {
    return ($show_problem_status eq 'yes'
    || $show_problem_status eq 'answer'
    || $show_problem_status eq '');
       }
       
       sub show_some_problem_status {
    return ($show_problem_status eq 'no');
       }
   
       sub show_no_problem_status {
    return ($show_problem_status eq 'no_feedback_ever');
       }
     
       sub show_answer_problem_status {
    return ($show_problem_status eq 'answer');
       }
   }
   
 sub editxmlmode {  sub editxmlmode {
     my ($request,$file) = @_;      my ($request,$file) = @_;
     my $result;      my $result;
Line 700  sub editxmlmode { Line 865  sub editxmlmode {
  if (!$error) { $problem=&Apache::lonnet::getfile($file); }   if (!$error) { $problem=&Apache::lonnet::getfile($file); }
     }      }
     &Apache::lonhomework::showhashsubset(\%env,'^form');      &Apache::lonhomework::showhashsubset(\%env,'^form');
     if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {      if ( $env{'form.submitbutton'} eq &mt('Save and View') ) {
  &Apache::lonhomework::showhashsubset(\%env,'^form');   &Apache::lonhomework::showhashsubset(\%env,'^form');
  $env{'form.problemmode'}='View';   $env{'form.problemmode'}='view';
  &renderpage($request,$file);   &renderpage($request,$file);
     } else {      } else {
  my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);   my ($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 > 80) { $cols = 80; }
  if ($cols < 70) { $cols = 70; }   if ($cols < 70) { $cols = 70; }
  if ($rows < 20) { $rows = 20; }   if ($rows < 20) { $rows = 20; }
  my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,   my $js =
  ($env{'environment.remote'} ne 'off'));      &Apache::edit::js_change_detection(). 
  my $html=&Apache::lonxml::xmlbegin();      &Apache::loncommon::resize_textarea_js().
  $result.=$html.$bodytag.              &Apache::structuretags::setmode_javascript().
               &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
    my $only_body =  ($env{'environment.remote'} eq 'off')? 0 : 1;
    my $dragmath_button = 
               &Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
    my $start_page = 
       &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
      {'no_auto_mt_title' => 1,
       'only_body'        => $only_body,
       'add_entries'      => {
    'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
    'onload'   => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
       }});
    $result.=$start_page.
     &renderpage($request,$file,['no_output_web'],1).      &renderpage($request,$file,['no_output_web'],1).
     &Apache::lonxml::message_location().'              '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
             <form name="lonhomework" method="POST" action="'.  
     &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.      &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
     &Apache::structuretags::remember_problem_state().'      &Apache::structuretags::remember_problem_state().'
             <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />              <div class="LC_edit_problem_editxml_header">
             <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />                <table class="LC_edit_problem_header_title"><tr><td>
             <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />                 '.&mt('Problem Editing').&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').'
             <hr />                  </td><td align="right">
             <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />                    '.&Apache::loncommon::helpLatexCheatsheet('Problem_LON-CAPA_Functions','Script Functions').'
             <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />                  </td></tr>
             <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />                </table>
             <hr />                <div class="LC_edit_problem_discards">
             ' . $xml_help . '                  <input type="hidden" name="problemmode" value="editxml" />
             <textarea style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.  
     &HTML::Entities::encode($problem,'<>&"').'</textarea>                  <input type="button" name="submitmode" accesskey="d" value="'.&mt('Discard Edits and View').'" '.
             </form></body></html>';                  'onclick="javascript:setmode(this.form,'."'discard'".')" />
                   <input type="button" '.&Apache::edit::submit_ask_anyway('setmode(this.form,'."'edit'".')').'name="submitmode" accesskey="e" value="'.&mt('Edit').'" />
                   <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
                   '.$dragmath_button.'
                 </div>
                 <div class="LC_edit_problem_saves">
                   <input type="submit" name="submitbutton" accesskey="s" value="'.&mt('Save').'"  />
                   <input type="submit" name="submitbutton" accesskey="v" value="'.&mt('Save and View').'" />
                 </div>
                 <hr class="LC_edit_problem_divide" />
         '.&Apache::lonxml::message_location().'
               </div>
               '  . '
               <textarea '.&Apache::edit::element_change_detection().
                 ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" '.
         ' name="editxmltext" id="LC_editxmltext">'.
         &HTML::Entities::encode($problem,'<>&"').'</textarea>
               <div id="LC_aftertextarea">
               </div>
               </form>'.&Apache::loncommon::end_page();
  &Apache::lonxml::add_messages(\$result);   &Apache::lonxml::add_messages(\$result);
  $request->print($result);   $request->print($result);
     }      }
Line 751  sub renderpage { Line 941  sub renderpage {
     my @targets = @{$targets || [&get_target()]};      my @targets = @{$targets || [&get_target()]};
     &Apache::lonhomework::showhashsubset(\%env,'form.');      &Apache::lonhomework::showhashsubset(\%env,'form.');
     &Apache::lonxml::debug("Running targets ".join(':',@targets));      &Apache::lonxml::debug("Running targets ".join(':',@targets));
   
     my $overall_result;      my $overall_result;
     foreach my $target (@targets) {      foreach my $target (@targets) {
  # FIXME need to do something intelligent when a problem goes   # FIXME need to do something intelligent when a problem goes
Line 768  sub renderpage { Line 959  sub renderpage {
  my $problem=&Apache::lonnet::getfile($file);   my $problem=&Apache::lonnet::getfile($file);
  my $result;   my $result;
  if ($problem eq -1) {   if ($problem eq -1) {
     my $filename=(split('/',$file))[-1];  
     $result.="<b> ".&mt('Unable to find')." <i>$filename</i></b>";  
     $problem='';      $problem='';
       my $filename=(split('/',$file))[-1];
       my $error =
    "<b> ".&mt('Unable to find [_1]',
      ' <span class="LC_filename">'.$filename.'</span>')
    ."</b>";
       $result.=
    &Apache::loncommon::simple_error_page($request,'Not available',
         $error);
       return;
  }   }
   
  my %mystyle;   my %mystyle;
Line 781  sub renderpage { Line 979  sub renderpage {
  &Apache::lonxml::debug("Should be parsing now");   &Apache::lonxml::debug("Should be parsing now");
  $result .= &Apache::lonxml::xmlparse($request, $target, $problem,   $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
      &setup_vars($target),%mystyle);       &setup_vars($target),%mystyle);
  undef($Apache::lonhomework::parsing_a_problem);   &finished_parsing();
  if (!$output) { $result = ''; }   if (!$output) { $result = ''; }
  #$request->print("Result follows:");   #$request->print("Result follows:");
  if ($target eq 'modified') {   if ($target eq 'modified') {
Line 812  sub renderpage { Line 1010  sub renderpage {
     }      }
 }  }
   
 # with no arg it returns a HTML <option> list of the template titles  sub finished_parsing {
 # with one arg it returns the filename associated with the arg passed      undef($Apache::lonhomework::parsing_a_problem);
       undef($Apache::lonhomework::parsing_a_task);
   }
   
 sub get_template_list {  sub get_template_list {
     my ($namewanted,$extension) = @_;      my ($extension) = @_;
     my $result;      my $result;
     my @allnames;      my @allnames;
     &Apache::lonxml::debug("Looking for :$extension:");      &Apache::lonxml::debug("Looking for :$extension:");
     foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {      my $glob_extension  = $extension;
  my $name=&Apache::lonnet::metadata($file,'title');      if ($extension eq 'survey' || $extension eq 'exam') {
  if ($namewanted && ($name eq $namewanted)) {   $glob_extension = 'problem';
     $result=$file;      }
     last;      my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
  } else {       '/templates/*.'.$glob_extension);
     if ($name) { push (@allnames, $name); }      @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
  }                        (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
                         &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
       @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
       my ($midpoint,$seconddiv,$numfiles);
       $numfiles = 0;
       foreach my $file (@files) {
           next if ($file->[1] !~ /\S/);
           $numfiles ++;
       }
       if ($numfiles > 0) {
           $result = '<div class="LC_left_float">';
           $midpoint = int($numfiles/2);
           if ($numfiles%2) {
               $midpoint ++;
           }
       }
       my $count = 0;
       my $currentcategory='';
       foreach my $file (@files) {
    next if ($file->[1] !~ /\S/);
           if ($file->[2] ne $currentcategory) {
              $currentcategory=$file->[2];
              if ((!$seconddiv) && ($count >= $midpoint)) {
                  $result .= '</div>'."\n".'<div class="LC_left_float">'."\n";
                  $seconddiv = 1;
              }
              $result.='<h3>'.$currentcategory.'</h3>';
              $count++;
           }
    $result .=
       '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
       $file->[1].'</label>';
           if ($file->[3]) {
              $result.=&Apache::loncommon::help_open_topic($file->[3]);
           }
           my $filename=$file->[0];
           $filename=~s/^\/home\/httpd\/html//;
           $result.=' <font size="-2"><a href="'.$filename.'" target="sample">'.&mt('Example').'</font></a><br />'."\n";
           $count ++;
     }      }
     if (@allnames && !$result) {      if ($numfiles > 0) {
  $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".          $result .= '</div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
     join('</option><option>',sort(@allnames)).'</option>';  
     }      }
     return $result;      return $result;
 }  }
   
 sub newproblem {  sub newproblem {
     my ($request) = @_;      my ($request) = @_;
     my $extension=$request->uri;  
     $extension=~s:^.*\.([\w]+)$:$1:;      if ($env{'form.template'}) {
     &Apache::lonxml::debug("Looking for :$extension:");   my $file = $env{'form.template'};
     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);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  copy($file,$dest);   &File::Copy::copy($file,$dest);
  &renderpage($request,$dest);   &renderpage($request,$dest);
     } elsif($env{'form.newfile'} && !$templatelist) {   return;
  # I don't like hard-coded filenames but for now, this will work.      }
  use File::Copy;  
       my ($extension) = ($request->uri =~ m/\.(\w+)$/);
       &Apache::lonxml::debug("Looking for :$extension:");
       my $templatelist=&get_template_list($extension);
       if ($env{'form.newfile'} && !$templatelist) {
    # no templates found
  my $templatefilename =   my $templatefilename =
     $request->dir_config('lonIncludes').'/templates/blank.problem';      $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
  &Apache::lonxml::debug("$templatefilename");   &Apache::lonxml::debug("$templatefilename");
  my $dest = &Apache::lonnet::filelocation("",$request->uri);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  copy($templatefilename,$dest);   &File::Copy::copy($templatefilename,$dest);
  &renderpage($request,$dest);   &renderpage($request,$dest);
     } else {      } else {
  my $url=&HTML::Entities::encode($request->uri,'<>&"');   my $url=&HTML::Entities::encode($request->uri,'<>&"');
Line 863  sub newproblem { Line 1101  sub newproblem {
  $shownurl=~s-^/~-/priv/-;   $shownurl=~s-^/~-/priv/-;
  my $dest = &Apache::lonnet::filelocation("",$request->uri);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  my $errormsg;   my $errormsg;
  if ($env{'form.newfile'}) {  
     $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";  
  }  
  my $instructions;   my $instructions;
  my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,   my $start_page = 
  ($env{'environment.remote'} ne 'off'));      &Apache::loncommon::start_page("Create New $extension");
  if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}   $request->print("
  my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',  $start_page
   'resource' => 'resource',  <h1>".&mt("Creating a new $extension resource.")."</h1>
   '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  $errormsg
 $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.  ".&mt("The requested file [_1] currently does not exist.",
         "<tt>$shownurl</tt>")."
 <p>  <p>
 <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>  <b>
 </p>  ".&mt("To create a new $extension, select a template from the".
 <p><form action="$url" method="POST">        " list below. Then click on the \"Create $extension\" button.")."</b>
 ENDNEWPROBLEM  </p><form action=\"$url\" method=\"POST\">");
   
  if (defined($templatelist)) {   if (defined($templatelist)) {
     $request->print("<select name=\"template\">$templatelist</select>");      $request->print($templatelist);
    }
    $request->print('<br /><input type="submit" name="newfile" value="'.
    &mt("Create $extension").'" />');
    $request->print("</form></p>".&Apache::loncommon::end_page());
       }
       return;
   }
   
   sub update_construct_style {
       if ($env{'request.state'} eq "construct"
    && $env{'form.problemmode'} eq 'view' 
    &&  defined($env{'form.submitted'})
    && !defined($env{'form.resetdata'})
    && !defined($env{'form.newrandomization'})) {
    if ((!$env{'form.style_file'} && $env{'construct.style'})
       ||$env{'form.clear_style_file'}) {
       &Apache::lonnet::delenv('construct.style');
    } elsif ($env{'form.style_file'} 
       && $env{'construct.style'} ne $env{'form.style_file'}) {
       &Apache::lonnet::appenv({'construct.style' => 
           $env{'form.style_file'}});
  }   }
  $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="&lt{'view'}">  
 &lt{'or'} <input type="submit" name="problemmode" accesskey="e" value="&lt{'Edit'}">  
 &lt{'the problem'}.  
 </form>  
 </body>  
 EDITMENU  
 }  
   
 sub handler {  sub handler {
     #my $t0 = [&gettimeofday()];      #my $t0 = [&gettimeofday()];
Line 923  sub handler { Line 1151  sub handler {
     $Apache::lonxml::debug=$env{'user.debug'};      $Apache::lonxml::debug=$env{'user.debug'};
     $env{'request.uri'}=$request->uri;      $env{'request.uri'}=$request->uri;
     &setuppermissions();      &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);      my $file=&Apache::lonnet::filelocation("",$request->uri);
   
Line 939  sub handler { Line 1160  sub handler {
  if ($Apache::lonhomework::browse ne 'F' &&    if ($Apache::lonhomework::browse ne 'F' && 
     $env{'request.state'} ne "construct") {      $env{'request.state'} ne "construct") {
     #should know where we are, so ask      #should know where we are, so ask
     if ( &Apache::lonnet::mod_perl_version() == 2 ) {      &unset_permissions();
  &Apache::lonnet::cleanenv();      $request->internal_redirect('/adm/ambiguous');
     }      return OK;
     &Apache::lonnet::logthis(&Apache::lonnet::mod_perl_version());  
     $request->internal_redirect('/adm/ambiguous'); return OK;  
  }   }
     }      }
     if (&setupheader($request)) { return OK; }      if (&setupheader($request)) {
     &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");   &unset_permissions();
    return OK;
       }
       &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
     &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});      &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
     my ($symb) = &Apache::lonxml::whichuser();      my ($symb) = &Apache::lonnet::whichuser();
     &Apache::lonxml::debug('symb is '.$symb);      &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 ($env{'request.state'} eq "construct") {      if ($env{'request.state'} eq "construct") {
  if ( -e $file ) {   if ( -e $file ) {
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
     ['problemmode']);      ['problemmode']);
     if (!(defined $env{'form.problemmode'})) {      if (!(defined $env{'form.problemmode'})) {
  #first visit to problem in construction space   #first visit to problem in construction space
  #&view_or_edit_menu($request);   $env{'form.problemmode'}= 'view';
  $env{'form.problemmode'}='View';  
  &renderpage($request,$file);   &renderpage($request,$file);
     } elsif ($env{'form.problemmode'} eq &mt('EditXML') ||      } elsif ($env{'form.problemmode'} eq 'editxml') {
      $env{'form.problemmode'} eq 'EditXML') {  
  &editxmlmode($request,$file);   &editxmlmode($request,$file);
     } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {      } elsif ($env{'form.problemmode'} eq 'calcanswers') {
  &analyze($request,$file);   &analyze($request,$file);
     } else {      } else {
    &update_construct_style();
  &renderpage($request,$file);   &renderpage($request,$file);
     }      }
  } else {   } else {
Line 988  sub handler { Line 1200  sub handler {
     }      }
     #my $td=&tv_interval($t0);      #my $td=&tv_interval($t0);
     #&Apache::lonxml::debug("Spent $td seconds processing");      #&Apache::lonxml::debug("Spent $td seconds processing");
     # &Apache::lonhomework::send_footer($request);  
     # always turn off debug messages      # always turn off debug messages
     $Apache::lonxml::debug=0;      $Apache::lonxml::debug=0;
       &unset_permissions();
     return OK;      return OK;
   
 }  }
Removed from v.1.223  
changed lines
  Added in v.1.304

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