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Diff for /loncom/homework/lonhomework.pm between versions 1.65 and 1.111

version 1.65, 2001/12/06 16:19:05 version 1.111, 2003/02/26 17:52:14
Line 28 Line 28
 # Guy Albertelli  # Guy Albertelli
 # 11/30 Gerd Kortemeyer  # 11/30 Gerd Kortemeyer
 # 6/1,8/17,8/18 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::inputtags;  use Apache::lonplot();
 use Apache::structuretags;  use Apache::inputtags();
 use Apache::randomlabel;  use Apache::structuretags();
 use Apache::response;  use Apache::randomlabel();
 use Apache::hint;  use Apache::response();
 use Apache::outputtags;  use Apache::hint();
   use Apache::outputtags();
   use Apache::caparesponse();
   use Apache::radiobuttonresponse();
   use Apache::optionresponse();
   use Apache::imageresponse();
   use Apache::essayresponse();
   use Apache::externalresponse();
   use Apache::rankresponse();
   use Apache::matchresponse();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   use HTML::Entities();
   use Apache::loncommon();
 #use Time::HiRes qw( gettimeofday tv_interval );  #use Time::HiRes qw( gettimeofday tv_interval );
   
 sub BEGIN {  BEGIN {
   &Apache::lonxml::register_insert();    &Apache::lonxml::register_insert();
 }  }
   
 sub get_target {  sub get_target {
   if ( $ENV{'request.state'} eq "published") {    if ( $ENV{'request.state'} eq "published") {
       if ( defined($ENV{'form.grade_target'}  ) 
    && ($ENV{'form.grade_target'} eq 'tex')) {
         return ($ENV{'form.grade_target'});
       } elsif ( defined($ENV{'form.grade_target'}  ) 
    && ($Apache::lonhomework::viewgrades == 'F' )) {
         return ($ENV{'form.grade_target'});
       }
    
     if ( defined($ENV{'form.submitted'})) {      if ( defined($ENV{'form.submitted'})) {
       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($ENV{'form.grade_target'}) ) {
         return ($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');
Line 62  sub get_target { Line 85  sub get_target {
  return ('web');   return ('web');
       }        }
     } else {      } else {
       if ( $ENV{'form.problemmode'} eq 'View' ) {        if ( $ENV{'form.problemmode'} eq 'View' ||
      $ENV{'form.problemmode'} eq 'Discard Edits and View') {
  if ( defined($ENV{'form.submitted'}) &&   if ( defined($ENV{'form.submitted'}) &&
      (!defined($ENV{'form.resetdata'})) ) {       (!defined($ENV{'form.resetdata'})) ) {
   return ('grade', 'web','answer');    return ('grade', 'web','answer');
Line 71  sub get_target { Line 95  sub get_target {
  }   }
       } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {        } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
  if ( $ENV{'form.submitted'} eq 'edit' ) {   if ( $ENV{'form.submitted'} eq 'edit' ) {
   return ('modified','edit');    if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
       return ('modified','web','answer');
     } else {
       return ('modified','edit');
     }
  } else {   } else {
   return ('edit');    return ('edit');
  }   }
Line 113  sub send_footer { Line 141  sub send_footer {
   
 $Apache::lonxml::browse='';  $Apache::lonxml::browse='';
   
   # JB, 9/24/2002: Any changes in this function may require a change
   # in lonnavmaps::resource::getDateStatus.
 sub check_access {  sub check_access {
   my ($id) = @_;    my ($id) = @_;
   my $date ='';    my $date ='';
   my $status = '';    my $status;
   my $datemsg = '';    my $datemsg = '';
   my $lastdate = '';    my $lastdate = '';
   my $temp;    my $temp;
   my $type;    my $type;
   my $passed;    my $passed;
   
     if ($ENV{'request.state'} eq "construct") {
       &Apache::lonxml::debug("in construction ignoring dates");
       $status='CAN_ANSWER';
       $datemsg='is in under construction';
       return ($status,$datemsg);
     }
   
   &Apache::lonxml::debug("checking for part :$id:");    &Apache::lonxml::debug("checking for part :$id:");
     &Apache::lonxml::debug("time:".time);
   foreach $temp ("opendate","duedate","answerdate") {    foreach $temp ("opendate","duedate","answerdate") {
     $lastdate = $date;      $lastdate = $date;
     $date = &Apache::lonnet::EXT("resource.$id.$temp");      $date = &Apache::lonnet::EXT("resource.$id.$temp");
       my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
       if ($thistype =~ /^(con_lost|no_such_host)/ ||
    $date     =~ /^(con_lost|no_such_host)/) {
    $status='UNAVAILABLE';
    $date="may open later.";
    return($status,$date);
       }
       if ($thistype eq 'date_interval') {
    if ($temp eq 'opendate') {
              $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
           }
           if ($temp eq 'answerdate') {
              $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
           }
       }
     &Apache::lonxml::debug("found :$date: for :$temp:");      &Apache::lonxml::debug("found :$date: for :$temp:");
     if ($date eq '') {      if ($date eq '') {
       $date = "an unknown date"; $passed = 0;        $date = "an unknown date"; $passed = 0;
Line 172  sub check_access { Line 226  sub check_access {
     $status='CAN_ANSWER';      $status='CAN_ANSWER';
     $datemsg='is closed but you are allowed to view it';      $datemsg='is closed but you are allowed to view it';
   }    }
   if ($ENV{'request.state'} eq "construct") {  
     &Apache::lonxml::debug("in construction ignoring dates");  
     $status='CAN_ANSWER';  
     $datemsg='is in under construction';  
   }  
   return ($status,$datemsg);    return ($status,$datemsg);
 }  }
   
 sub showhash {  sub showhash {
   my (%hash) = @_;    my (%hash) = @_;
     &showhashsubset(\%hash,'.');
     return '';
   }
   
   sub showarray {
       my ($array)=@_;
       my $string="(";
       foreach my $elm (@{ $array }) {
    if (ref($elm)) {
       if ($elm =~ /ARRAY/ ) {
    $string.=&showarray($elm);
       }
    } else {
       $string.="$elm,"
    }
       }
       chop($string);
       $string.=")";
       return $string;
   }
   
   sub showhashsubset {
     my ($hash,$keyre) = @_;
   my $resultkey;    my $resultkey;
   foreach $resultkey (sort keys %hash) {    foreach $resultkey (sort keys %$hash) {
     &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}");      if ($resultkey =~ /$keyre/) {
         if (ref($$hash{$resultkey})) {
    if ($$hash{$resultkey} =~ /ARRAY/ ) {
       &Apache::lonxml::debug("$resultkey ---- ".
      &showarray($$hash{$resultkey}));
    } elsif ($$hash{$resultkey} =~ /HASH/ ) {
       &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
       &showhashsubset($$hash{$resultkey},'.');
    } else {
       &Apache::lonxml::debug("$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");
   return '';    return '';
Line 203  sub setupheader { Line 290  sub setupheader {
   } else {    } else {
     $request->content_type('text/html');      $request->content_type('text/html');
   }    }
   if (!$Apache::lonxml::debug) { &Apache::loncommon::no_cache($request); }    if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
       &Apache::loncommon::no_cache($request);
     }
   $request->send_http_header;    $request->send_http_header;
   return OK if $request->header_only;    return OK if $request->header_only;
   return ''    return ''
Line 211  sub setupheader { Line 300  sub setupheader {
   
 sub handle_save_or_undo {  sub handle_save_or_undo {
   my ($request,$problem,$result) = @_;    my ($request,$problem,$result) = @_;
   my $fileout = &Apache::lonnet::filelocation("",$request->uri);    my $file    = &Apache::lonnet::filelocation("",$request->uri);
   my $filesave=$fileout.".bak";    my $filebak =$file.".bak";
     my $filetmp =$file.".tmp";
   my $error=0;    my $error=0;
   
   if ($ENV{'form.Undo'} eq 'undo') {    if ($ENV{'form.Undo'} eq 'undo') {
     if (copy($filesave,$fileout)) {      my $error=0;
       $request->print("<b>Undid changes, Copied $filesave to $fileout<br /></b>");      if (!copy($file,$filetmp)) { $error=1; }
       if ((!$error) && (!copy($filebak,$file))) { $error=1; }
       if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
       if (!$error) {
         $request->print("<p><b>Undid changes, Switched $filebak and $file</b></p>");
     } else {      } else {
       $request->print("<font color=\"red\" size=\"+1\"><b>Unable to undo, unable to copy $filesave to $fileout<br /></b></font>");        $request->print("<p><font color=\"red\" size=\"+1\"><b>Unable to undo, unable to switch $filebak and $file</b></font></p>");
       $error=1;        $error=1;
     }      }
   } else {    } else {
     my $fs=Apache::File->new(">$filesave");      my $fs=Apache::File->new(">$filebak");
     if (defined($fs)) {      if (defined($fs)) {
       print $fs $$problem;        print $fs $$problem;
       $request->print("<b>Making Backup to $filesave</b><br />");        $request->print("<b>Making Backup to $filebak</b><br />");
     } else {      } else {
       $request->print("<font color=\"red\" size=\"+1\"><b>Unable to make backup $filesave</b></font>");        $request->print("<font color=\"red\" size=\"+1\"><b>Unable to make backup $filebak</b></font>");
       $error=2;        $error=2;
     }      }
     my $fh=Apache::File->new(">$fileout");      my $fh=Apache::File->new(">$file");
     if (defined($fh)) {      if (defined($fh)) {
       print $fh $$result;        print $fh $$result;
       $request->print("<b>Saving Modifications to $fileout</b><br />");        $request->print("<b>Saving Modifications to $file</b><br />");
     } else {      } else {
       $request->print("<font color=\"red\" size=\"+1\"><b>Unable to write to $fileout</b></font>");        $request->print("<font color=\"red\" size=\"+1\"><b>Unable to write to $file</b></font>");
       $error|=4;        $error|=4;
     }      }
   }    }
   return $error;    return $error;
 }  }
   
   sub analyze_header {
       my ($request) = @_;
       my $result.='<html>
               <head><title>Analyzing a problem</title></head>
               <body bgcolor="#FFFFFF">
               <form name="lonhomework" method="POST" action="'.
         $ENV{'request.uri'}.'">
               <input type="submit" name="problemmode" value="EditXML" />
               <input type="submit" name="problemmode" value="Edit" />
               <hr />
               <input type="submit" name="submit" value="View" />
               <hr />
               List of possible answers:
               </form>';
       $request->print($result);
       $request->rflush();
   }
   
   sub analyze_footer {
       my ($request) = @_;
       my $result='</body></html>';
       $request->print($result);
       $request->rflush();
   }
   
   sub analyze {
       my ($request,$file) = @_;
       &Apache::lonxml::debug("Analyze");
       my $result;
       my %overall;
       my %allparts;
       my $rndseed=$ENV{'form.rndseed'};
       &analyze_header($request);
       for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {
    my $subresult=&Apache::lonnet::ssi($request->uri,
      ('grade_target' => 'analyze'),
      ('rndseed' => $i));
    &Apache::lonxml::debug(":$subresult:");
    (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
    my %analyze=&Apache::lonnet::str2hash($subresult);
    $Apache::lonxml::debug=1;
    &Apache::lonhomework::showhash(%analyze);
    $Apache::lonxml::debug=0;
    my @parts = @{ $analyze{'parts'} };
    foreach my $part (@parts) {
       if (!exists($allparts{$part})) {$allparts{$part}=1;};
       if ($analyze{$part.'.type'} eq 'numericalresponse' ||
    $analyze{$part.'.type'} eq 'stringresponse' ||
    $analyze{$part.'.type'} eq 'formularesponse'   ) {
    push( @{ $overall{$part.'.answer'} },
         [@{ $analyze{$part.'.answer'} }]);
       }
    }
       }
       foreach my $part (keys(%allparts)) {
    if (defined(@{ $overall{$part.'.answer'} })) {
       $request->print('<table><tr><td>Part '.$part.'</td></tr>');
       foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
    $request->print('<tr><td>'.join('</td><td>',@{ $answer }).
    '</td></tr>');
       }
       $request->print('</table>');
    } else {
       $request->print('<p>Part '.$part.
       ' is not analyzabale at this time</p>');
    }
       }
       &analyze_footer($request);
       &Apache::lonhomework::showhash(%overall);
       return $result;
   }
   
 sub editxmlmode {  sub editxmlmode {
   my ($request,$file) = @_;    my ($request,$file) = @_;
   my $result;    my $result;
Line 256  sub editxmlmode { Line 422  sub editxmlmode {
    \$ENV{'form.editxmltext'});     \$ENV{'form.editxmltext'});
     if (!$error) { $problem=&Apache::lonnet::getfile($file); }      if (!$error) { $problem=&Apache::lonnet::getfile($file); }
   }    }
   my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);    &Apache::lonhomework::showhashsubset(\%ENV,'^form');
   if ($cols > 80) { $cols = 80; }    if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
   $result.='<html><body bgcolor="#FFFFFF">      &Apache::lonhomework::showhashsubset(\%ENV,'^form');
       $ENV{'form.problemmode'}='View';
       &renderpage($request,$file);
     } else {
       my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
       my $xml_help = '<table><tr><td>'.
    &Apache::loncommon::help_open_topic("Problem_Editor_XML_Index",'Problem Editing Help')
       .'</td><td>'.
    &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
       undef,undef,600)
       .'</td><td>'.
           &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
       undef,undef,600)
       .'</td></tr></table>';
       if ($cols > 80) { $cols = 80; }
       if ($cols < 70) { $cols = 70; }
       if ($rows < 20) { $rows = 20; }
       $result.='<html><body bgcolor="#FFFFFF">
             <form name="lonhomework" method="POST" action="'.              <form name="lonhomework" method="POST" action="'.
       $ENV{'request.uri'}.'">        $ENV{'request.uri'}.'">
             <input type="hidden" name="problemmode" value="EditXML" />              <input type="hidden" name="problemmode" value="EditXML" />
             <input type="submit" name="problemmode" value="View" />              <input type="submit" name="problemmode" value="Discard Edits and View" />
             <input type="submit" name="problemmode" value="Edit" />              <input type="submit" name="problemmode" value="Edit" />
             <hr />              <hr />
             <input type="submit" name="submit" value="Submit Changes" />              <input type="submit" name="submit" value="Submit Changes" />
               <input type="submit" name="submit" value="Submit Changes and View" />
             <input type="submit" name="Undo" value="undo" />              <input type="submit" name="Undo" value="undo" />
             <hr />              <hr />
               ' . $xml_help . '
             <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.              <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
       $problem.'</textarea>        &HTML::Entities::encode($problem).'</textarea>
             </form></body></html>';              </form></body></html>';
   $request->print($result);      $request->print($result);
     }
   return '';    return '';
 }  }
   
Line 279  sub renderpage { Line 465  sub renderpage {
   my ($request,$file) = @_;    my ($request,$file) = @_;
   
   my (@targets) = &get_target();    my (@targets) = &get_target();
     &Apache::lonxml::debug("Running targets ".join(':',@targets));
   foreach my $target (@targets) {    foreach my $target (@targets) {
     #my $t0 = [&gettimeofday()];      #my $t0 = [&gettimeofday()];
     my $problem=&Apache::lonnet::getfile($file);      my $problem=&Apache::lonnet::getfile($file);
Line 289  sub renderpage { Line 476  sub renderpage {
   
     my %mystyle;      my %mystyle;
     my $result = '';      my $result = '';
     &Apache::inputtags::initialize_inputtags;      if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
     &Apache::edit::initialize_edit;      if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
     if ($target eq 'web') {      if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
       if (&Apache::lonnet::symbread() eq '') {  
  if ($ENV{'request.state'} eq "construct") {      &Apache::lonxml::debug("Should be parsing now");
  } else {      $result = &Apache::lonxml::xmlparse($request, $target, $problem,
   $request->print("Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored<br />");   &setup_vars($target),%mystyle);
  }  
       }  
       #if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }  
     }  
     #if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); }  
   
     my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');  
     if ($default == -1) {  
       &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");  
       $default='';  
     }  
     $result = &Apache::lonxml::xmlparse($target, $problem,  
  $default.&setup_vars($target),%mystyle);  
   
     #$request->print("Result follows:");      #$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);
     } else {      } else {
         if ($target eq 'analyze') {
    $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
    undef(%Apache::lonhomework::analyze);
         }
       #my $td=&tv_interval($t0);        #my $td=&tv_interval($t0);
       #if ( $Apache::lonxml::debug) {        #if ( $Apache::lonxml::debug) {
  #$result =~ s:</body>::;   #$result =~ s:</body>::;
Line 331  sub renderpage { Line 509  sub renderpage {
 sub get_template_list {  sub get_template_list {
   my ($namewanted,$extension) = @_;    my ($namewanted,$extension) = @_;
   my $result;    my $result;
     my @allnames;
   &Apache::lonxml::debug("Looking for :$extension:");    &Apache::lonxml::debug("Looking for :$extension:");
   foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {    foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
     my $name=&Apache::lonnet::metadata($file,'title');      my $name=&Apache::lonnet::metadata($file,'title');
Line 338  sub get_template_list { Line 517  sub get_template_list {
       $result=$file;        $result=$file;
       last;        last;
     } else {      } else {
       $result.="<option>$name</option>";   if ($name) { push (@allnames, $name); }
     }      }
   }    }
     if (@allnames && !$result) {
       $result="<option>Select a $extension type</option>\n<option>".
         join('</option><option>',sort(@allnames)).'</option>';
     }
   return $result;    return $result;
 }  }
   
Line 349  sub newproblem { Line 532  sub newproblem {
     my $extension=$request->uri;      my $extension=$request->uri;
     $extension=~s:^.*\.([\w]+)$:$1:;      $extension=~s:^.*\.([\w]+)$:$1:;
     &Apache::lonxml::debug("Looking for :$extension:");      &Apache::lonxml::debug("Looking for :$extension:");
     if ($ENV{'form.template'}) {      if ($ENV{'form.template'} &&
    $ENV{'form.template'} ne "Select a $extension type") {
  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);
Line 359  sub newproblem { Line 543  sub newproblem {
  # 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 = 
     "/home/httpd/html/res/adm/includes/templates/blank.problem";      $request->dir_config('lonIncludes').'/templates/blank.problem';
    &Apache::lonxml::debug("$templatefilename");
  my $dest = &Apache::lonnet::filelocation("",$request->uri);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  copy($templatefilename,$dest);   copy($templatefilename,$dest);
  &renderpage($request,$dest);   &renderpage($request,$dest);
     }else {      } else {
  my $templatelist=&get_template_list('',$extension);   my $templatelist=&get_template_list('',$extension);
  my $url=$request->uri;   my $url=$request->uri;
  my $dest = &Apache::lonnet::filelocation("",$request->uri);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  if (!defined($templatelist)) {   my $instructions;
     # We didn't find a template, so just create a blank problem.   if ($templatelist) { $instructions=", select a template from the pull-down menu below.<br />Then";}
     $request->print(<<ENDNEWPROBLEM);  
 <body bgcolor="#FFFFFF">  
 The requested file $url doesn\'t exist. You can create a new $extension <br />  
 <form action="$url" method="POST">  
 <input type="submit" name="newfile" value="New $extension"><br />  
 </form>  
 </body>  
 ENDNEWPROBLEM  
             return '';  
         }  
  $request->print(<<ENDNEWPROBLEM);   $request->print(<<ENDNEWPROBLEM);
 <body bgcolor="#FFFFFF">  <body bgcolor="#FFFFFF">
 The requested file $url doesn\'t exist. You can create a new $extension <br />  <h1>Creating a new $extension resource</h1>
 <form action="$url" method="POST">  The requested file <tt>$url</tt> currently does not exist.
 <input type="submit" value="New $extension"><br />  <p>
 <select name="template">  To create a new $extension$instructions click on the "Create $extension" button.
 $templatelist  </p>
 </select>  <p><form action="$url" method="POST">
 </form>  
 </body>  
 ENDNEWPROBLEM  ENDNEWPROBLEM
    if (defined($templatelist)) {
       $request->print("<select name=\"template\">$templatelist</select>");
    }
    $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"Create $extension\" />");
    $request->print("</form></p></body>");
     }      }
     return '';      return '';
 }  }
Line 411  sub handler { Line 589  sub handler {
   #my $t0 = [&gettimeofday()];    #my $t0 = [&gettimeofday()];
   my $request=$_[0];    my $request=$_[0];
   
   if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}  #  if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}
     $Apache::lonxml::debug=$ENV{'user.debug'};
   
   if (&setupheader($request)) { return OK; }    if (&setupheader($request)) { return OK; }
   $ENV{'request.uri'}=$request->uri;    $ENV{'request.uri'}=$request->uri;
Line 420  sub handler { Line 599  sub handler {
   $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});    $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
   $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});    $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
   &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");    &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
     # some times multiple problemmodes are submitted, need to select
     # the last one
     &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
     if ( defined($ENV{'form.problemmode'}) &&
          ref($ENV{'form.problemmode'}) ) {
       &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));
       my $mode=$ENV{'form.problemmode'}->[-1];
       undef $ENV{'form.problemmode'};
       $ENV{'form.problemmode'}=$mode;
     }
   &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});    &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
   my $file=&Apache::lonnet::filelocation("",$request->uri);    my $file=&Apache::lonnet::filelocation("",$request->uri);
   
Line 445  sub handler { Line 634  sub handler {
  &renderpage($request,$file);   &renderpage($request,$file);
       } elsif ($ENV{'form.problemmode'} eq 'EditXML') {        } elsif ($ENV{'form.problemmode'} eq 'EditXML') {
  &editxmlmode($request,$file);   &editxmlmode($request,$file);
         } elsif ($ENV{'form.problemmode'} eq 'Answer Distribution') {
    &analyze($request,$file);
       } else {        } else {
  &renderpage($request,$file);   &renderpage($request,$file);
       }        }
Line 454  sub handler { Line 645  sub handler {
     }      }
   } else {    } else {
     # just render the page normally outside of construction space      # just render the page normally outside of construction space
       &Apache::lonxml::debug("not construct");
     &renderpage($request,$file);      &renderpage($request,$file);
   }    }
   #my $td=&tv_interval($t0);    #my $td=&tv_interval($t0);
Removed from v.1.65  
changed lines
  Added in v.1.111

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