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Diff for /loncom/homework/lonhomework.pm between versions 1.153 and 1.226

version 1.153, 2003/10/14 15:47:50 version 1.226, 2005/11/21 21:51:29
Line 24 Line 24
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  
 # Guy Albertelli  
 # 11/30 Gerd Kortemeyer  
 # 6/1,8/17,8/18 Gerd Kortemeyer  
 # 7/18 Jeremy Bowers  
   
 package Apache::lonhomework;  package Apache::lonhomework;
 use strict;  use strict;
 use Apache::style();  use Apache::style();
 use Apache::lonxml();  use Apache::lonxml();
 use Apache::lonnet();  use Apache::lonnet;
 use Apache::lonplot();  use Apache::lonplot();
 use Apache::inputtags();  use Apache::inputtags();
 use Apache::structuretags();  use Apache::structuretags();
Line 51  use Apache::externalresponse(); Line 47  use Apache::externalresponse();
 use Apache::rankresponse();  use Apache::rankresponse();
 use Apache::matchresponse();  use Apache::matchresponse();
 use Apache::chemresponse();  use Apache::chemresponse();
   use Apache::drawimage();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use HTML::Entities();  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();
   
   # FIXME - improve commenting
   
   
 BEGIN {  BEGIN {
     &Apache::lonxml::register_insert();      &Apache::lonxml::register_insert();
 }  }
   
   
   #
   # Decides what targets to render for.
   # Implicit inputs:
   #   Various session environment variables:
   #      request.state -  published  - is a /res/ resource
   #                       uploaded   - is a /uploaded/ resource
   #                       contruct   - is a /priv/ resource
   #      form.grade_target - a form parameter requesting a specific target
 sub get_target {  sub get_target {
     if (($ENV{'request.state'} eq "published") ||      &Apache::lonxml::debug("request.state = $env{'request.state'}");
  ($ENV{'request.state'} eq "uploaded")) {      if( defined($env{'form.grade_target'})) {
  if ( defined($ENV{'form.grade_target'}  )    &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
      && ($ENV{'form.grade_target'} eq 'tex')) {      } else {
     return ($ENV{'form.grade_target'});   &Apache::lonxml::debug("form.grade_target <undefined>");
  } elsif ( defined($ENV{'form.grade_target'}  )       }
       if (($env{'request.state'} eq "published") ||
    ($env{'request.state'} eq "uploaded")) {
    if ( defined($env{'form.grade_target'}  ) 
        && ($env{'form.grade_target'} eq 'tex')) {
       return ($env{'form.grade_target'});
    } elsif ( defined($env{'form.grade_target'}  ) 
   && ($Apache::lonhomework::viewgrades eq 'F' )) {    && ($Apache::lonhomework::viewgrades eq 'F' )) {
     return ($ENV{'form.grade_target'});      return ($env{'form.grade_target'});
  }   }
    if ($env{'form.webgrade'} &&
  if ( defined($ENV{'form.submitted'}) &&      $Apache::lonhomework::modifygrades eq 'F') {
      ( !defined($ENV{'form.resetdata'})) &&      return ('grade','webgrade');
      ( !defined($ENV{'form.newrandomization'}))) {   }
    if ( defined($env{'form.submitted'}) &&
        ( !defined($env{'form.resetdata'})) &&
        ( !defined($env{'form.newrandomization'}))) {
     return ('grade', 'web');      return ('grade', 'web');
  } else {   } else {
     return ('web');      return ('web');
  }   }
     } elsif ($ENV{'request.state'} eq "construct") {      } elsif ($env{'request.state'} eq "construct") {
  if ( defined($ENV{'form.grade_target'}) ) {   if ( defined($env{'form.grade_target'}) ) {
     return ($ENV{'form.grade_target'});      return ($env{'form.grade_target'});
  }   }
  if ( defined($ENV{'form.preview'})) {   if ( defined($env{'form.preview'})) {
     if ( defined($ENV{'form.submitted'})) {      if ( defined($env{'form.submitted'})) {
  return ('grade', 'web');   return ('grade', 'web');
     } else {      } else {
  return ('web');   return ('web');
     }      }
  } else {   } else {
     if ( $ENV{'form.problemmode'} eq &mt('View') ||      if ( $env{'form.problemmode'} eq &mt('View') ||
  $ENV{'form.problemmode'} eq &mt('Discard Edits and View')) {   $env{'form.problemmode'} eq &mt('Discard Edits and View')) {
  if ( defined($ENV{'form.submitted'}) &&   if ( defined($env{'form.submitted'}) &&
      (!defined($ENV{'form.resetdata'})) &&       (!defined($env{'form.resetdata'})) &&
      (!defined($ENV{'form.newrandomization'}))) {       (!defined($env{'form.newrandomization'}))) {
     return ('grade', 'web','answer');      return ('grade', 'web','answer');
  } else {   } else {
     return ('web','answer');      return ('web','answer');
  }   }
     } elsif ( $ENV{'form.problemmode'} eq &mt('Edit') ) {      } elsif ( $env{'form.problemmode'} eq &mt('Edit') ||
  if ( $ENV{'form.submitted'} eq 'edit' ) {        $env{'form.problemmode'} eq 'Edit') {
     if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {   if ( $env{'form.submitted'} eq 'edit' ) {
       if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
  return ('modified','web','answer');   return ('modified','web','answer');
     } else {      } else {
  return ('modified','edit');   return ('modified','no_output_web','edit');
     }      }
  } else {   } else {
     return ('edit');      return ('no_output_web','edit');
  }   }
     } else {      } else {
  return ('web');   return ('web');
Line 126  sub setup_vars { Line 146  sub setup_vars {
 sub send_header {  sub send_header {
     my ($request)= @_;      my ($request)= @_;
     $request->print(&Apache::lontexconvert::header());      $request->print(&Apache::lontexconvert::header());
 #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');  #  $request->print('<form name='.$env{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
 }  }
   
 sub createmenu {  sub createmenu {
Line 145  sub send_footer { Line 165  sub send_footer {
     $request->print(&Apache::lontexconvert::footer());      $request->print(&Apache::lontexconvert::footer());
 }  }
   
 $Apache::lonxml::browse='';  sub proctor_checked_in {
       my ($slot_name,$slot,$type)=@_;
       my @possible_proctors=split(",",$slot->{'proctor'});
       
       my $key;
       if ($type eq 'Task') {
    my $version=$Apache::lonhomework::history{'resource.version'};
    $key ="resource.$version.checkedin";
       } elsif ($type eq 'problem') {
    $key ='resource.0.checkedin';
       }
       
       foreach my $possible (@possible_proctors) { 
    if ($Apache::lonhomework::history{$key} eq $possible
       && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
       return 1;
    }
       }
       
       return 0;
   }
   
   $Apache::lonxml::browse='';
 sub check_ip_acc {  sub check_ip_acc {
     my ($acc)=@_;      my ($acc)=@_;
     if (!defined($acc)) { return 1; }      &Apache::lonxml::debug("acc is $acc");
       if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) { 
    return 1;
       }
     my $allowed=0;      my $allowed=0;
     my $ip=$ENV{'REMOTE_ADDR'};      my $ip=$ENV{'REMOTE_ADDR'};
     my $name;      my $name;
Line 174  sub check_ip_acc { Line 218  sub check_ip_acc {
  use Socket;   use Socket;
  my $netaddr=inet_aton($ip);   my $netaddr=inet_aton($ip);
  ($name)=gethostbyaddr($netaddr,AF_INET);   ($name)=gethostbyaddr($netaddr,AF_INET);
  }      }
     if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }      if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
  } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {   } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
     #127.0.0.1      #127.0.0.1
Line 192  sub check_ip_acc { Line 236  sub check_ip_acc {
     }      }
     return $allowed;      return $allowed;
 }  }
   
   sub check_slot_access {
       my ($id,$type)=@_;
   
       # does it pass normal muster
       my ($status,$datemsg)=&check_access($id);
       
       my $useslots = &Apache::lonnet::EXT("resource.$id.useslots");
       if ($useslots ne 'resource') {
    return ($status,$datemsg);
       }
   
       if ($status eq 'SHOW_ANSWER' ||
    $status eq 'CLOSED' ||
    $status eq 'INVALID_ACCESS' ||
    $status eq 'UNAVAILABLE') {
    return ($status,$datemsg);
       }
       if ($env{'request.state'} eq "construct") {
    return ($status,$datemsg);
       }
       
       if ($type eq 'Task') {
    my $version=$Apache::lonhomework::history{'resource.version'};
    if ($Apache::lonhomework::history{"resource.$version.checkedin"} &&
       $Apache::lonhomework::history{"resource.$version.status"} eq 'pass') {
       return ('SHOW_ANSWER');
    }
       }
   
       my @slots=
    (split(':',&Apache::lonnet::EXT("resource.$id.availablestudent")),
    split(':',&Apache::lonnet::EXT("resource.$id.available")));
   
   #    if (!@slots) {
   # return ($status,$datemsg);
   #    }
       my $slotstatus='NOT_IN_A_SLOT';
       my ($returned_slot,$slot_name);
       foreach my $slot (@slots) {
    &Apache::lonxml::debug("getting $slot");
    my %slot=&Apache::lonnet::get_slot($slot);
    &Apache::lonhomework::showhash(%slot);
    if ($slot{'starttime'} < time &&
       $slot{'endtime'} > time &&
       &check_ip_acc($slot{'ip'})) {
       &Apache::lonxml::debug("$slot is good");
       $slotstatus='NEEDS_CHECKIN';
       $returned_slot=\%slot;
       $slot_name=$slot;
       last;
    }
       }
       if ($slotstatus eq 'NEEDS_CHECKIN' &&
    &proctor_checked_in($slot_name,$returned_slot,$type)) {
    &Apache::lonxml::debug("protoctor checked in");
    $slotstatus='CAN_ANSWER';
       }
   
       my ($pass_status,$checkedin);
       if ($type eq 'Task') {
    my $version=$Apache::lonhomework::history{'resource.version'};
    $pass_status = 
       $Apache::lonhomework::history{"resource.$version.status"} eq 'fail';
    $checkedin =
       $Apache::lonhomework::history{"resource.$version.checkedin"};
       } elsif ($type eq 'problem') {
    $pass_status = 1;
    $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
       }
       
       if ($slotstatus eq 'NOT_IN_A_SLOT' 
    && $checkedin ) {
   
    if ($pass_status) {
       return ('SHOW_ANSWER');
    } else {
       return ('WAITING_FOR_GRADE');
    }
   
       }
       if ( $status eq 'CANNOT_ANSWER' && 
    ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
    return ($status,$datemsg);
       }
   
       return ($slotstatus,$datemsg,$slot_name,$returned_slot);
   }
   
 # JB, 9/24/2002: Any changes in this function may require a change  # JB, 9/24/2002: Any changes in this function may require a change
 # in lonnavmaps::resource::getDateStatus.  # in lonnavmaps::resource::getDateStatus.
 sub check_access {  sub check_access {
Line 200  sub check_access { Line 333  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'} =~ /^CANNOT_ANSWER/) {
    if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
    lc($Apache::lonhomework::problemstatus) eq 'no')) {
       return ('CANNOT_ANSWER',
       &mt('is in this state due to author settings.'));
    }
       } else {
    return ($env{'form.problemstate'},
    &mt('is in this state due to author settings.'));
       }
    }
  &Apache::lonxml::debug("in construction ignoring dates");   &Apache::lonxml::debug("in construction ignoring dates");
  $status='CAN_ANSWER';   $status='CAN_ANSWER';
  $datemsg=&mt('is in under construction');   $datemsg=&mt('is in under construction');
  return ($status,$datemsg);  # return ($status,$datemsg);
     }      }
   
     &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 $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));  
     if (!$allowed) {  
  $status='INVALID_ACCESS';  
  $date=&mt("may be open from a different computer.");  
  return($status,$date);  
     }  
   
     foreach $temp ("opendate","duedate","answerdate") {      my ($symb)=&Apache::lonxml::whichuser();
  $lastdate = $date;      &Apache::lonxml::debug("symb:".$symb);
  $date = &Apache::lonnet::EXT("resource.$id.$temp");      #if ($env{'request.state'} ne "construct" && $symb ne '') {
  my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");      if ($env{'request.state'} ne "construct") {
  if ($thistype =~ /^(con_lost|no_such_host)/ ||   my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
     $date     =~ /^(con_lost|no_such_host)/) {   if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
     $status='UNAVAILABLE';      $status='INVALID_ACCESS';
     $date=&mt("may open later.");      $date=&mt("can not be accessed from your location.");
     return($status,$date);      return($status,$date);
  }   }
  if ($thistype eq 'date_interval') {  
     if ($temp eq 'opendate') {   foreach my $temp ("opendate","duedate","answerdate") {
  $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;      $lastdate = $date;
     }      $date = &Apache::lonnet::EXT("resource.$id.$temp");
     if ($temp eq 'answerdate') {      my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
  $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;      if ($thistype =~ /^(con_lost|no_such_host)/ ||
     }   $date     =~ /^(con_lost|no_such_host)/) {
  }   $status='UNAVAILABLE';
  &Apache::lonxml::debug("found :$date: for :$temp:");   $date=&mt("may open later.");
  if ($date eq '') {   return($status,$date);
     $date = &mt("an unknown date"); $passed = 0;      }
  } elsif ($date eq 'con_lost') {      if ($thistype eq 'date_interval') {
     $date = &mt("an indeterminate date"); $passed = 0;   if ($temp eq 'opendate') {
  } else {      $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
     if (time < $date) { $passed = 0; } else { $passed = 1; }   }
     $date = localtime $date;   if ($temp eq 'answerdate') {
  }      $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
  if (!$passed) { $type=$temp; last; }   }
     }      }
     &Apache::lonxml::debug("have :$type:$passed:");      &Apache::lonxml::debug("found :$date: for :$temp:");
     if ($passed) {      if ($date eq '') {
  $status='SHOW_ANSWER';   $date = &mt("an unknown date"); $passed = 0;
  $datemsg=$date;      } elsif ($date eq 'con_lost') {
     } elsif ($type eq 'opendate') {   $date = &mt("an indeterminate date"); $passed = 0;
  $status='CLOSED';      } else {
  $datemsg = &mt("will open on")." $date";   if (time < $date) { $passed = 0; } else { $passed = 1; }
     } elsif ($type eq 'duedate') {   $date = localtime $date;
  $status='CAN_ANSWER';      }
  $datemsg = &mt("is due at")." $date";      if (!$passed) { $type=$temp; last; }
     } elsif ($type eq 'answerdate') {   }
  $status='CLOSED';   &Apache::lonxml::debug("have :$type:$passed:");
  $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";   if ($passed) {
       $status='SHOW_ANSWER';
       $datemsg=$date;
    } elsif ($type eq 'opendate') {
       $status='CLOSED';
       $datemsg = &mt("will open on")." $date";
    } elsif ($type eq 'duedate') {
       $status='CAN_ANSWER';
       $datemsg = &mt("is due at")." $date";
    } elsif ($type eq 'answerdate') {
       $status='CLOSED';
       $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
    }
     }      }
     if ($status eq 'CAN_ANSWER') {      if ($status eq 'CAN_ANSWER' ||
    (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
  #check #tries, and if correct.   #check #tries, and if correct.
  my $tries = $Apache::lonhomework::history{"resource.$id.tries"};   my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
  my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");   my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
  if ( $tries eq '' ) { $tries = '0'; }   if ( $tries eq '' ) { $tries = '0'; }
  if ( $maxtries eq '' ) { $maxtries = '2'; }    if ( $maxtries eq '' && 
  if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }       $env{'request.state'} ne 'construct') { $maxtries = '2'; } 
    if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
  # if (correct and show prob status) or excused then CANNOT_ANSWER   # if (correct and show prob status) or excused then CANNOT_ANSWER
  if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/   if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
     &&      &&
Line 280  sub check_access { Line 431  sub check_access {
     $status = 'CANNOT_ANSWER';      $status = 'CANNOT_ANSWER';
  }   }
     }      }
       if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
    my $interval=&Apache::lonnet::EXT("resource.$id.interval");
    &Apache::lonxml::debug("looking for interval $interval");
    if ($interval) {
       my $first_access=&Apache::lonnet::get_first_access('map');
       &Apache::lonxml::debug("looking for accesstime $first_access");
       if (!$first_access) {
    $status='NOT_YET_VIEWED';
    $datemsg=&seconds_to_human_length($interval);
       } else {
    my $newdate=localtime($first_access+$interval);
    if (time > ($first_access+$interval)) {
       $status='CLOSED';
       $datemsg = &mt("was due on")." $newdate".&mt(", and answers will be available on")." $date";
    } else {
       $datemsg = &mt("is due at")." $newdate";
    }
       }
    }
       }
   #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&    #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
   #    (!$Apache::lonhomework::history{"resource.0.outtoken"})) {    #    (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
   #    return ('UNCHECKEDOUT','needs to be checked out');    #    return ('UNCHECKEDOUT','needs to be checked out');
Line 297  sub check_access { Line 467  sub check_access {
     return ($status,$datemsg);      return ($status,$datemsg);
 }  }
   
   sub seconds_to_human_length {
       my ($length)=@_;
   
       my $seconds=$length%60; $length=int($length/60);
       my $minutes=$length%60; $length=int($length/60);
       my $hours=$length%24;   $length=int($length/24);
       my $days=$length;
   
       my $timestr;
       if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
       if ($hours > 0) { $timestr.=($timestr?", ":"").
     &mt('[quant,_1,hour]',$hours); }
       if ($minutes > 0) { $timestr.=($timestr?", ":"").
       &mt('[quant,_1,minute]',$minutes); }
       if ($seconds > 0) { $timestr.=($timestr?", ":"").
       &mt('[quant,_1,second]',$seconds); }
       return $timestr;
   }
   
 sub showhash {  sub showhash {
     my (%hash) = @_;      my (%hash) = @_;
     &showhashsubset(\%hash,'.');      &showhashsubset(\%hash,'.');
Line 307  sub showarray { Line 496  sub showarray {
     my ($array)=@_;      my ($array)=@_;
     my $string="(";      my $string="(";
     foreach my $elm (@{ $array }) {      foreach my $elm (@{ $array }) {
  if (ref($elm)) {   if (ref($elm) eq 'ARRAY') {
     if ($elm =~ /ARRAY/ ) {      $string.=&showarray($elm);
  $string.=&showarray($elm);   } elsif (ref($elm) eq 'HASH') {
     }      $string.= "HASH --- \n<br />";
       $string.= &showhashsubset($elm,'.');
  } else {   } else {
     $string.="$elm,"      $string.="$elm,"
  }   }
Line 324  sub showhashsubset { Line 514  sub showhashsubset {
     my ($hash,$keyre) = @_;      my ($hash,$keyre) = @_;
     my $resultkey;      my $resultkey;
     foreach $resultkey (sort keys %$hash) {      foreach $resultkey (sort keys %$hash) {
  if ($resultkey =~ /$keyre/) {   if ($resultkey !~ /$keyre/) { next; }
     if (ref($$hash{$resultkey})) {   if (ref($$hash{$resultkey})  eq 'ARRAY' ) {
  if ($$hash{$resultkey} =~ /ARRAY/ ) {      &Apache::lonxml::debug("$resultkey ---- ".
     &Apache::lonxml::debug("$resultkey ---- ".     &showarray($$hash{$resultkey}));
    &showarray($$hash{$resultkey}));   } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
  } elsif ($$hash{$resultkey} =~ /HASH/ ) {      &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
     &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");      &showhashsubset($$hash{$resultkey},'.');
     &showhashsubset($$hash{$resultkey},'.');   } else {
  } else {      &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
     &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");  
  }  
     } else {  
  &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");  
     }  
  }   }
     }      }
     &Apache::lonxml::debug("\n<br />restored values^</br>\n");      &Apache::lonxml::debug("\n<br />restored values^</br>\n");
Line 345  sub showhashsubset { Line 530  sub showhashsubset {
 }  }
   
 sub setuppermissions {  sub setuppermissions {
     $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});      $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
     my $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});      my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
     if (! $viewgrades &&       if (! $viewgrades && 
  exists($ENV{'request.course.sec'}) &&    exists($env{'request.course.sec'}) && 
  $ENV{'request.course.sec'} !~ /^\s*$/) {   $env{'request.course.sec'} !~ /^\s*$/) {
  $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}.   $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
                                                '/'.$ENV{'request.course.sec'});                                                 '/'.$env{'request.course.sec'});
       }
       $Apache::lonhomework::viewgrades = $viewgrades; # File global variable...dirt.
       if ($Apache::lonhomework::browse eq 'F' && 
    $env{'form.devalidatecourseresdata'} eq 'on') {
    my (undef,$courseid) = &Apache::lonxml::whichuser();
    &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
         $env{"course.$courseid.domain"});
       }
       my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
       if (! $modifygrades && 
    exists($env{'request.course.sec'}) && 
    $env{'request.course.sec'} !~ /^\s*$/) {
    $modifygrades = 
       &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
        '/'.$env{'request.course.sec'});
     }      }
     $Apache::lonhomework::viewgrades = $viewgrades;      $Apache::lonhomework::modifygrades = $modifygrades;
     return ''      return '';
 }  }
   
 sub setupheader {  sub setupheader {
     my $request=$_[0];      my $request=$_[0];
     if ($ENV{'browser.mathml'}) {      &Apache::loncommon::content_type($request,'text/html');
  &Apache::loncommon::content_type($request,'text/xml');  
     } else {  
  &Apache::loncommon::content_type($request,'text/html');  
     }  
     if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {      if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
  &Apache::loncommon::no_cache($request);   &Apache::loncommon::no_cache($request);
     }      }
   #    $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
   #  'lastrevisiondate'));
     $request->send_http_header;      $request->send_http_header;
     return OK if $request->header_only;      return OK if $request->header_only;
     return ''      return ''
Line 379  sub handle_save_or_undo { Line 577  sub handle_save_or_undo {
     my $filetmp =$file.".tmp";      my $filetmp =$file.".tmp";
     my $error=0;      my $error=0;
   
     if ($ENV{'form.Undo'} eq &mt('undo')) {      &Apache::lonnet::correct_line_ends($result);
   
       if ($env{'form.Undo'} eq &mt('undo')) {
  my $error=0;   my $error=0;
  if (!copy($file,$filetmp)) { $error=1; }   if (!copy($file,$filetmp)) { $error=1; }
  if ((!$error) && (!copy($filebak,$file))) { $error=1; }   if ((!$error) && (!copy($filebak,$file))) { $error=1; }
  if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }   if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
  if (!$error) {   if (!$error) {
     $request->print("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");      &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
  } else {   } else {
     $request->print("<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><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");
     $error=1;      $error=1;
  }   }
     } else {      } else {
  my $fs=Apache::File->new(">$filebak");   my $fs=Apache::File->new(">$filebak");
  if (defined($fs)) {   if (defined($fs)) {
     print $fs $$problem;      print $fs $$problem;
     $request->print("<b>".&mt("Making Backup to").      &Apache::lonxml::info("<b>".&mt("Making Backup to").
     " $filebak</b><br />");    " $filebak</b>");
  } else {   } else {
     $request->print("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");      &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
     $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;
     $request->print("<b>".&mt("Saving Modifications to").      &Apache::lonxml::info("<b>".&mt("Saving Modifications to").
     " $file</b><br />");    " $file</b>");
  } else {   } else {
     $request->print("<font color=\"red\" size=\"+1\"><b>".      &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".
     &mt("Unable to write to")." $file</b></font>");    &mt("Unable to write to")." $file</b></font>");
     $error|=4;      $error|=4;
  }   }
     }      }
Line 416  sub handle_save_or_undo { Line 616  sub handle_save_or_undo {
   
 sub analyze_header {  sub analyze_header {
     my ($request) = @_;      my ($request) = @_;
     my $result.='<html>      my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,
       ($env{'environment.remote'} ne 'off'));
       my $html=&Apache::lonxml::xmlbegin();
       my $result.=$html.'
             <head><title>'.&mt("Analyzing a problem").'</title></head>              <head><title>'.&mt("Analyzing a problem").'</title></head>
             <body bgcolor="#FFFFFF">              '.$bodytag.&Apache::lonxml::message_location().'
             <form name="lonhomework" method="POST" action="'.              <form name="lonhomework" method="POST" action="'.
     $ENV{'request.uri'}.'">      &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
       &Apache::structuretags::remember_problem_state().'
             <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />              <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
             <input type="submit" name="problemmode" value="'.&mt('Edit').'" />              <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
             <hr />              <hr />
             <input type="submit" name="submit" value="'.&mt("View").'" />              <input type="submit" name="submit" value="'.&mt("View").'" />
             <hr />              <hr />
             '.&mt('List of possible answers').':  
             </form>';              </form>';
       &Apache::lonxml::add_messages(\$result);
     $request->print($result);      $request->print($result);
     $request->rflush();      $request->rflush();
 }  }
Line 444  sub analyze { Line 648  sub analyze {
     &Apache::lonxml::debug("Analyze");      &Apache::lonxml::debug("Analyze");
     my $result;      my $result;
     my %overall;      my %overall;
       my %seedexample;
     my %allparts;      my %allparts;
     my $rndseed=$ENV{'form.rndseed'};      my $rndseed=$env{'form.rndseed'};
     &analyze_header($request);      &analyze_header($request);
     my %prog_state=      my %prog_state=
  &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),   &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
       &mt('Getting Problem Variants'),        &mt('Getting Problem Variants'),
       $ENV{'form.numtoanalyze'});        $env{'form.numtoanalyze'},
     for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {        'inline',undef);
       for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
  &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,   &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
  &mt('last problem'));   &mt('last problem'));
    if (&Apache::loncommon::connection_aborted($request)) { return; }
           my $thisseed=$i+$rndseed;
  my $subresult=&Apache::lonnet::ssi($request->uri,   my $subresult=&Apache::lonnet::ssi($request->uri,
    ('grade_target' => 'analyze'),     ('grade_target' => 'analyze'),
    ('rndseed' => $i+$rndseed));     ('rndseed' => $thisseed));
  (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);   (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
  my %analyze=&Apache::lonnet::str2hash($subresult);   my %analyze=&Apache::lonnet::str2hash($subresult);
  my @parts;   my @parts;
Line 468  sub analyze { Line 676  sub analyze {
     if ($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'} });
    if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
       @{$analyze{$part.'.answer'}}=('<font color="red">'.&mt('Error').'</font>');
    }
  push( @{ $overall{$part.'.answer'} },   push( @{ $overall{$part.'.answer'} },
       [@{ $analyze{$part.'.answer'} }]);        [@{ $analyze{$part.'.answer'} }]);
                   $seedexample{join("\0",@{ $analyze{$part.'.answer'}})}=$thisseed;
     }      }
  }   }
     }      }
     &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,      &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
   &mt('Analyzing Results'));    &mt('Analyzing Results'));
       $request->print('<hr />'.&mt('List of possible answers').': ');
     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] });      my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
     $request->print('<table><tr><td colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</td></tr>');      $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');
     my %frequency;      my %frequency;
     foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {      foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
  $frequency{join("\0",@{ $answer })}++;   $frequency{join("\0",@{ $answer })}++;
     }      }
     $request->print('<tr><td colspan="'.($num_cols).'">'.&mt('Answer').'</td><td>'.&mt('Frequency').'</td></tr>');      $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
       .&mt('click for example').')</th></tr>');
     foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {      foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
  $request->print('<tr><td align="right">'.   $request->print('<tr><td class="center">'.
  join('</td><td align="right">',split("\0",$answer)).   join('</td><td class="center">',split("\0",$answer)).
  '</td><td>('.$frequency{$answer}.   '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{$answer}.'">'.$frequency{$answer}.
  ')</td></tr>');   '</a></td></tr>');
     }      }
     $request->print('</table>');      $request->print('</table>');
  } else {   } else {
     $request->print('<p>'.&mt('Part').' '.$part.' '.      $request->print('<p>'.&mt('Response').' '.$part.' '.
     &mt('is not analyzable at this time').'</p>');      &mt('is not analyzable at this time').'</p>');
  }   }
     }      }
     if (scalar(keys(%allparts)) == 0 ) {      if (scalar(keys(%allparts)) == 0 ) {
  $request->print('<p>'.&mt('Found no analyzable parts in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');   $request->print('<p>'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
     }      }
     &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);      &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
     &analyze_footer($request);      &analyze_footer($request);
Line 514  sub editxmlmode { Line 729  sub editxmlmode {
        " <i>$file</i></b>");         " <i>$file</i></b>");
  $problem='';   $problem='';
     }      }
     if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {      if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) {
  my $error=&handle_save_or_undo($request,\$problem,   my $error=&handle_save_or_undo($request,\$problem,
        \$ENV{'form.editxmltext'});         \$env{'form.editxmltext'});
  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.submit'} eq &mt('Submit Changes 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 = Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",   my $xml_help = '<table><tr><td>'.
       "Problem Editing Help");      &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
       "Problem Editing Help").
       '</td><td>'.
          &Apache::loncommon::help_open_menu('',undef,undef,undef,5,'Authoring').
                   '</td></tr></table>';
  if ($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; }
  $result.='<html><body bgcolor="#FFFFFF">   my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,
    ($env{'environment.remote'} ne 'off'));
    my $html=&Apache::lonxml::xmlbegin();
    $result.=$html.$bodytag.
       &renderpage($request,$file,['no_output_web'],1).
       &Apache::lonxml::message_location().'
             <form name="lonhomework" method="POST" action="'.              <form name="lonhomework" method="POST" action="'.
     $ENV{'request.uri'}.'">      &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
       &Apache::structuretags::remember_problem_state().'
             <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />              <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
             <input type="submit" name="problemmode" value="'.&mt('Discard Edits and View').'" />              <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
             <input type="submit" name="problemmode" value="'.&mt('Edit').'" />              <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
             <hr />              <hr />
             <input type="submit" name="submit" value="'.&mt('Submit Changes').'" />              <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
             <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />              <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
             <input type="submit" name="Undo" value="'.&mt('undo').'" />              <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
             <hr />              <hr />
             ' . $xml_help . '              ' . $xml_help . '
             <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.              <textarea style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
     &HTML::Entities::encode($problem).'</textarea>      &HTML::Entities::encode($problem,'<>&"').'</textarea>
             </form></body></html>';              </form></body></html>';
    &Apache::lonxml::add_messages(\$result);
  $request->print($result);   $request->print($result);
     }      }
     return '';      return '';
 }  }
   
   #
   #    Render the page in whatever target desired.
   #
 sub renderpage {  sub renderpage {
     my ($request,$file) = @_;      my ($request,$file,$targets,$return_string) = @_;
   
     my (@targets) = &get_target();      my @targets = @{$targets || [&get_target()]};
       &Apache::lonhomework::showhashsubset(\%env,'form.');
     &Apache::lonxml::debug("Running targets ".join(':',@targets));      &Apache::lonxml::debug("Running targets ".join(':',@targets));
       my $overall_result;
     foreach my $target (@targets) {      foreach my $target (@targets) {
    # FIXME need to do something intelligent when a problem goes
           # from viewable to not viewable due to map conditions
    #&setuppermissions();
    #if (   $Apache::lonhomework::browse ne '2'
    #    && $Apache::lonhomework::browse ne 'F' ) {
    #    $request->print(" You most likely shouldn't see me.");
    #}
  #my $t0 = [&gettimeofday()];   #my $t0 = [&gettimeofday()];
    my $output=1;
    if ($target eq 'no_output_web') {
       $target = 'web'; $output=0;
    }
  my $problem=&Apache::lonnet::getfile($file);   my $problem=&Apache::lonnet::getfile($file);
    my $result;
  if ($problem eq -1) {   if ($problem eq -1) {
     &Apache::lonxml::error("<b> ".&mt('Unable to find')." <i>$file</i></b>");      my $filename=(split('/',$file))[-1];
       $result.="<b> ".&mt('Unable to find')." <i>$filename</i></b>";
     $problem='';      $problem='';
  }   }
   
  my %mystyle;   my %mystyle;
  my $result = '';  
  if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }   if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
  if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }   if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
  if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}   if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
   
  &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);   undef($Apache::lonhomework::parsing_a_problem);
    if (!$output) { $result = ''; }
  #$request->print("Result follows:");   #$request->print("Result follows:");
  if ($target eq 'modified') {   if ($target eq 'modified') {
     &handle_save_or_undo($request,\$problem,\$result);      &handle_save_or_undo($request,\$problem,\$result);
Line 587  sub renderpage { Line 831  sub renderpage {
     #$result =~ s:</body>::;      #$result =~ s:</body>::;
     #$result.="<br />Spent $td seconds processing target $target\n</body>";      #$result.="<br />Spent $td seconds processing target $target\n</body>";
     #}      #}
     $request->print($result);  #    $request->print($result);
     $request->rflush();      $overall_result.=$result;
   #    $request->rflush();
  }   }
  #$request->print(":Result ends");   #$request->print(":Result ends");
  #my $td=&tv_interval($t0);   #my $td=&tv_interval($t0);
     }      }
       if (!$return_string) {
    &Apache::lonxml::add_messages(\$overall_result);
    $request->print($overall_result);   
    $request->rflush();   
       } else {
    return $overall_result;
       }
 }  }
   
 # with no arg it returns a HTML <option> list of the template titles  # with no arg it returns a HTML <option> list of the template titles
Line 624  sub newproblem { Line 876  sub newproblem {
     $extension=~s:^.*\.([\w]+)$:$1:;      $extension=~s:^.*\.([\w]+)$:$1:;
     &Apache::lonxml::debug("Looking for :$extension:");      &Apache::lonxml::debug("Looking for :$extension:");
     my $templatelist=&get_template_list('',$extension);      my $templatelist=&get_template_list('',$extension);
     if ($ENV{'form.template'} &&      if ($env{'form.template'} &&
  $ENV{'form.template'} ne "Select a $extension template") {   $env{'form.template'} ne "Select a $extension template") {
  use File::Copy;   use File::Copy;
  my $file = &get_template_list($ENV{'form.template'},$extension);   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);   copy($file,$dest);
  &renderpage($request,$dest);   &renderpage($request,$dest);
     } elsif($ENV{'form.newfile'} && !$templatelist) {      } elsif($env{'form.newfile'} && !$templatelist) {
  # I don't like hard-coded filenames but for now, this will work.   # I don't like hard-coded filenames but for now, this will work.
  use File::Copy;   use File::Copy;
  my $templatefilename =   my $templatefilename =
Line 641  sub newproblem { Line 893  sub newproblem {
  copy($templatefilename,$dest);   copy($templatefilename,$dest);
  &renderpage($request,$dest);   &renderpage($request,$dest);
     } else {      } else {
  my $url=$request->uri;   my $url=&HTML::Entities::encode($request->uri,'<>&"');
    my $shownurl=$url;
    $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'}) {   if ($env{'form.newfile'}) {
     $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";      $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
  }   }
  my $instructions;   my $instructions;
    my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,
    ($env{'environment.remote'} ne 'off'));
  if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}   if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
  my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',   my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
   'resource' => 'resource',    'resource' => 'resource',
Line 658  sub newproblem { Line 914  sub newproblem {
   'Create' => 'Create',    'Create' => 'Create',
   'button' => 'button');    'button' => 'button');
  $request->print(<<ENDNEWPROBLEM);   $request->print(<<ENDNEWPROBLEM);
 <body bgcolor="#FFFFFF">  $bodytag
 <h1>$lt{'create'} $extension $lt{'resource'}</h1>  <h1>$lt{'create'} $extension $lt{'resource'}</h1>
 $errormsg  $errormsg
 $lt{'requested'} <tt>$url</tt> $lt{'not exist'}.  $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
 <p>  <p>
 <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>  <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
 </p>  </p>
Line 678  ENDNEWPROBLEM Line 934  ENDNEWPROBLEM
   
 sub view_or_edit_menu {  sub view_or_edit_menu {
     my ($request) = @_;      my ($request) = @_;
     my $url=$request->uri;      my $url=&HTML::Entities::encode($request->uri,'<>&"');
     my %lt=&Apache::lonlocal::texthash( 'would' => 'Would you like to',      my %lt=&Apache::lonlocal::texthash( 'would' => 'Would you like to',
       'view' => 'View',        'view' => 'View',
       'Edit' => 'edit',        'Edit' => 'edit',
Line 687  sub view_or_edit_menu { Line 943  sub view_or_edit_menu {
     $request->print(<<EDITMENU);      $request->print(<<EDITMENU);
 <body bgcolor="#FFFFFF">  <body bgcolor="#FFFFFF">
 <form action="$url" method="POST">  <form action="$url" method="POST">
 $lt{'would'} <input type="submit" name="problemmode" value="&lt{'view'}">  $lt{'would'} <input type="submit" name="problemmode" accesskey="v" value="&lt{'view'}">
 &lt{'or'} <input type="submit" name="problemmode" value="&lt{'Edit'}">  &lt{'or'} <input type="submit" name="problemmode" accesskey="e" value="&lt{'Edit'}">
 &lt{'the problem'}.  &lt{'the problem'}.
 </form>  </form>
 </body>  </body>
Line 698  EDITMENU Line 954  EDITMENU
 sub handler {  sub handler {
     #my $t0 = [&gettimeofday()];      #my $t0 = [&gettimeofday()];
     my $request=$_[0];      my $request=$_[0];
           $Apache::lonxml::request=$request;
     $Apache::lonxml::debug=$ENV{'user.debug'};      $Apache::lonxml::debug=$env{'user.debug'};
       $env{'request.uri'}=$request->uri;
     if (&setupheader($request)) { return OK; }      &setuppermissions();
     $ENV{'request.uri'}=$request->uri;  
   
     #setup permissions  
     $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});  
     $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});  
     &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");  
     # some times multiple problemmodes are submitted, need to select      # some times multiple problemmodes are submitted, need to select
     # the last one      # the last one
     &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});      if ( defined($env{'form.problemmode'}) && ref($env{'form.problemmode'}) ) {
     if ( defined($ENV{'form.problemmode'}) &&   my $mode=$env{'form.problemmode'}->[-1];
  ref($ENV{'form.problemmode'}) ) {   undef $env{'form.problemmode'};
  &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));   $env{'form.problemmode'}=$mode;
  my $mode=$ENV{'form.problemmode'}->[-1];  
  undef $ENV{'form.problemmode'};  
  $ENV{'form.problemmode'}=$mode;  
     }      }
     &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});  
     my $file=&Apache::lonnet::filelocation("",$request->uri);      my $file=&Apache::lonnet::filelocation("",$request->uri);
   
     #check if we know where we are      #check if we know where we are
     if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {       if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) { 
  # if we are browsing we might not be able to know where we are   # if we are browsing we might not be able to know where we are
  if ($Apache::lonhomework::browse ne 'F') {   if ($Apache::lonhomework::browse ne 'F' && 
       $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 ) {      $request->internal_redirect('/adm/ambiguous'); return OK;
  &Apache::lonnet::cleanenv();  
     }  
     $request->internal_redirect('/adm/ambiguous'); return;  
  }   }
     }      }
       if (&setupheader($request)) { return OK; }
       &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
       &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
     my ($symb) = &Apache::lonxml::whichuser();      my ($symb) = &Apache::lonxml::whichuser();
     &Apache::lonxml::debug('symb is '.$symb);      &Apache::lonxml::debug('symb is '.$symb);
     if ($ENV{'request.state'} eq "construct" || $symb eq '') {      if ($env{'request.state'} eq "construct" || $symb eq '') {
  if ($ENV{'form.resetdata'} eq &mt('Reset Submissions') ||   if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
     $ENV{'form.resetdata'} eq &mt('New Problem Variation') ||      $env{'form.resetdata'} eq &mt('New Problem Variation') ||
     $ENV{'form.newrandomization'} eq &mt('New Randomization')) {      $env{'form.newrandomization'} eq &mt('New Randomization')) {
     my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();      my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
     &Apache::lonnet::tmpreset($symb,'',$domain,$name);      &Apache::lonnet::tmpreset($symb,'',$domain,$name);
     &Apache::lonxml::debug("Attempt reset");      &Apache::lonxml::debug("Attempt reset");
  }   }
     }      }
     if ($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);   #&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 &mt('EditXML') ||
        $env{'form.problemmode'} eq 'EditXML') {
  &editxmlmode($request,$file);   &editxmlmode($request,$file);
     } elsif ($ENV{'form.problemmode'} eq &mt('Calculate answers')) {      } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {
  &analyze($request,$file);   &analyze($request,$file);
     } else {      } else {
  &renderpage($request,$file);   &renderpage($request,$file);
Removed from v.1.153  
changed lines
  Added in v.1.226

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