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Diff for /loncom/homework/structuretags.pm between versions 1.186 and 1.273

version 1.186, 2003/06/18 22:12:34 version 1.273, 2004/11/30 23:28:57
Line 25 Line 25
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # 2/19 Guy  ###
 # 6/26/2001 fixed extra web display at end of <web></web> tags  
 # 8/17,8/18,8/20 Gerd Kortemeyer  
   
   
 package Apache::structuretags;   package Apache::structuretags; 
Line 36  use strict; Line 34  use strict;
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::File();  use Apache::File();
 use Apache::lonmenu;  use Apache::lonmenu;
   use Apache::lonlocal;
   use Apache::lonxml;
   use Time::HiRes qw( gettimeofday tv_interval );
 BEGIN {  BEGIN {
     &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));      &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
 }  }
   
 sub start_web {  sub start_web {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if (!($target eq 'web' || $target eq 'edit' || $target eq 'modified' ||      my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
   $target eq 'answer' || $target eq 'grade' || $target eq 'meta' )) {      if ($target eq 'web') {
  my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);   return $bodytext;
     }      }
     return '';      return '';
 }  }
Line 56  sub end_web { Line 56  sub end_web {
   
 sub start_tex {  sub start_tex {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if (!($target eq 'tex' || $target eq 'edit' || $target eq 'modified' ||      my $result='';
   $target eq 'answer' || $target eq 'grade' || $target eq 'meta' )) {      my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
  &Apache::lonxml::debug("tex 1");      if ($target eq 'tex') {
  my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);   return $bodytext.' ';
     }      }
     return '';      return $result;;
 }  }
   
 sub end_tex {  sub end_tex {
Line 71  sub end_tex { Line 71  sub end_tex {
 sub page_start {  sub page_start {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my %found;      my %found;
     foreach my $taginside ($tagstack) {      foreach my $taginside (@$tagstack) {
  foreach my $taglookedfor ('html','body','form') {   foreach my $taglookedfor ('html','body','form') {
     if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}      if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
  }   }
Line 82  sub page_start { Line 82  sub page_start {
     if (!defined($found{'html'})) {      if (!defined($found{'html'})) {
  $result=&Apache::londefdef::start_html($target,$token,$tagstack,   $result=&Apache::londefdef::start_html($target,$token,$tagstack,
        $parstack,$parser,$safeeval);         $parstack,$parser,$safeeval);
  $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);   $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target).
       &Apache::lonhtmlcommon::htmlareaheaders().
       &Apache::lonhtmlcommon::spellheader().
       &Apache::lonxml::fontsettings();     
     }      }
     my $body_tag_start;      my $body_tag_start;
     if (!defined($found{'body'})) {      if (!defined($found{'body'}) && $ENV{'request.state'} eq 'construct'
  $body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.   && $ENV{'environment.remote'} eq 'off') {
     'onUnload="'.&Apache::lonmenu::unloadevents().'" ';   $body_tag_start=&Apache::loncommon::bodytag();
       } elsif (!defined($found{'body'})) {
    $body_tag_start='<body onload="'.&Apache::lonmenu::loadevents().'" '.
       'onunload="'.&Apache::lonmenu::unloadevents().'" ';
  my $background=&Apache::lonxml::get_param('background',$parstack,   my $background=&Apache::lonxml::get_param('background',$parstack,
   $safeeval);    $safeeval);
    if ($ENV{'browser.imagesuppress'} eq 'on') { $background=''; }
  if ($background) {   if ($background) {
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=      $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
  $background;   $background;
Line 97  sub page_start { Line 104  sub page_start {
  } else {   } else {
     my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,      my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
    $safeeval);     $safeeval);
     if ($bgcolor) {      if (($bgcolor) && ($ENV{'browser.blackwhite'} ne 'on')) {
  $body_tag_start.='bgcolor="'.$bgcolor.'" ';   $body_tag_start.='bgcolor="'.$bgcolor.'" ';
     } else {      } else {
  $body_tag_start.='bgcolor="#ffffff"';   $body_tag_start.='bgcolor="#ffffff"';
     }      }
  }   }
    if ($ENV{'browser.fontenhance'} eq 'on') {
       $body_tag_start.=' style="font-size: x-large;" ';
    }
  $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);   $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
  if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {   if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
     my ($symb,undef,undef,undef,$publicuser)=      my ($symb,undef,undef,undef,$publicuser)=
  &Apache::lonxml::whichuser();   &Apache::lonxml::whichuser();
     if ($symb eq '' && !$publicuser) {      if ($symb eq '' && !$publicuser) {
  my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");   my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
  $help="Browsing resource, all submissions are temporary.<br />";   $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
  $body_tag_start.=$help;   $body_tag_start.=$help;
     }      }
  }   }
    $body_tag_start.=&Apache::lonxml::message_location();
     }      }
     my $form_tag_start;      my $form_tag_start;
     if (!defined($found{'form'})) {      if (!defined($found{'form'})) {
  $form_tag_start='<form name="lonhomework" method="POST" action="'.   $form_tag_start='<form name="lonhomework" method="post" action="';
     $ENV{'request.uri'}.'">';   my $uri=$ENV{'request.uri'};
    if ($ENV{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
    $form_tag_start.=$uri.'">';
     }      }
     return ($result,$head_tag_start,$body_tag_start,$form_tag_start);      return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
 }  }
Line 125  sub page_start { Line 138  sub page_start {
 #use Time::HiRes();  #use Time::HiRes();
 sub get_resource_name {  sub get_resource_name {
     my ($parstack,$safeeval)=@_;      my ($parstack,$safeeval)=@_;
       if (defined($Apache::lonhomework::name)) {
    return $Apache::lonhomework::name;
       }
     my $name=&Apache::lonnet::gettitle();      my $name=&Apache::lonnet::gettitle();
     if ($name eq '') {      if ($name eq '') {
  $name=&Apache::lonnet::EXT('resource.title');   $name=&Apache::lonnet::EXT('resource.title');
  if ($name eq 'con_lost') { $name = ''; }   if ($name eq 'con_lost') { $name = ''; }
     }      }
       if ($name!~/\S+/) {
    $name=$ENV{'request.uri'};
    $name=~s-.*/([^/]+)$-$1-;
       }
     $Apache::lonhomework::name=$name;      $Apache::lonhomework::name=$name;
     return $name;      return $name;
 }  }
Line 138  sub setup_rndseed { Line 158  sub setup_rndseed {
     my ($safeeval)=@_;      my ($safeeval)=@_;
     my $rndseed;      my $rndseed;
     my ($symb)=&Apache::lonxml::whichuser();      my ($symb)=&Apache::lonxml::whichuser();
     if ($ENV{'request.state'} eq "construct" || $symb eq '') {      if ($ENV{'request.state'} eq "construct" || $symb eq '' ||
             $Apache::lonhomework::history{'resource.CODE'}) {
  $rndseed=$ENV{'form.rndseed'};   $rndseed=$ENV{'form.rndseed'};
  if (!$rndseed) {   if (!$rndseed) {
     $rndseed=$Apache::lonhomework::history{'rndseed'};      $rndseed=$Apache::lonhomework::history{'rndseed'};
     if (!$rndseed) {      if (!$rndseed) {
  $rndseed=time;   $rndseed=time;
  $ENV{'form.rndseed'}=$rndseed;  
     }      }
       $ENV{'form.rndseed'}=$rndseed;
  }   }
  if ($ENV{'form.resetdata'} eq 'New Problem Variation' ||   if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
     $ENV{'form.newrandomization'} eq 'New Randomization') {      $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
     $rndseed=time;      srand(time);
     if ($rndseed eq $ENV{'form.rndseed'}) {      $rndseed=int(rand(2100000000));
  srand($rndseed);  
  $rndseed=int(rand(1000000000));  
     }  
     $ENV{'form.rndseed'}=$rndseed;      $ENV{'form.rndseed'}=$rndseed;
     delete($ENV{'form.resetdata'});      delete($ENV{'form.resetdata'});
     delete($ENV{'form.newrandomization'});      delete($ENV{'form.newrandomization'});
  }   }
  &Apache::lonxml::debug("Setting rndseed to $rndseed");   if (defined($rndseed) && $rndseed ne int($rndseed)) {
  &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);     $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
           }
           if ($Apache::lonhomework::history{'resource.CODE'}) {
      $rndseed=&Apache::lonnet::rndseed();
    }
    if ($safeeval) {
       &Apache::lonxml::debug("Setting rndseed to $rndseed");
       &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
    }
     }      }
     return $rndseed;      return $rndseed;
 }  }
   
   sub remember_problem_state {
       return '
          <input type="hidden" name="problemstate" value="'.$ENV{'form.problemstate'}.'" />
          <input type="hidden" name="problemtype" value="'.$ENV{'form.problemtype'}.'" />
          <input type="hidden" name="problemstatus" value="'.$ENV{'form.problemstatus'}.'" />';
   }
   
 sub problem_edit_header {  sub problem_edit_header {
     return '<input type="hidden" name="submitted" value="edit" />      return '<input type="hidden" name="submitted" value="edit" />'.
        <input type="hidden" name="problemmode" value="Edit" />   &Apache::structuretags::remember_problem_state().'
        <input type="submit" name="problemmode" value="Discard Edits and View" />         <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
        <input type="submit" name="problemmode" value="EditXML" />         <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
        <input type="submit" name="Undo" value="undo" /> <hr />         <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
        <input type="submit" name="submit" value="Submit Changes and Edit" />         <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
        <input type="submit" name="submit" value="Submit Changes and View" /><br /><p>&nbsp;</p><table border="0"><tr><td bgcolor="#DDDDDD">         <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
       ';         <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
          &Apache::loncommon::help_open_menu('','Problem Editing Help','Problem_Editor_XML_Index','',5,'Authoring',undef,undef,undef,'Problem Editing Help')
          .'</td></tr></table>'.
          '<table border="0"><tr><td bgcolor="#DDDDDD">';
 }  }
   
 sub problem_edit_footer {  sub problem_edit_footer {
     return '</td></tr></table><br /><input type="submit" name="submit" value="Submit Changes and Edit" />      return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
     <input type="submit" name="submit" value="Submit Changes and View" />';      <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
       &Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields).
       "\n</form>\n</body>\n</html>";
   }
   
   sub option {
       my ($value,$name) = @_;
       my $result ="<option value='".$value."' ";
       if ($ENV{'form.'.$name} eq $value) {
    $result.=" selected='on' ";
       }
       $result.='>';
       return $result;
 }  }
   
 sub problem_web_to_edit_header {  sub problem_web_to_edit_header {
     my ($rndseed)=@_;      my ($rndseed)=@_;
     my $result.='<input type="hidden" name="problemmode" value="View" />      my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />
              <input type="submit" name="problemmode" value="Edit" />               <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
              <input type="submit" name="problemmode" value="EditXML" />               <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
              <input type="submit" name="newrandomization" value="New Randomization" />               <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
              <input type="submit" name="resetdata" value="Reset Submissions" />               <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
              <nobr><input type="submit" name="changerandseed" value="Change Random Seed To:" />               <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
               <input type="text" name="rndseed" width="10" value="'.                <input type="text" name="rndseed" size="10" value="'.
        $rndseed.'"         $rndseed.'"
            onChange="javascript:document.lonhomework.changerandseed.click()" /></nobr>             onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
              <input type="checkbox" name="showallfoils" ';               <input type="checkbox" name="showallfoils" ';
     if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }      if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
     $result.= ' />&nbsp;Show&nbsp;All&nbsp;Foils      $result.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils').
              <hr />';   &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
    '<hr />';
       $result.="
   <nobr>
   Problem Status:
   <select name='problemstate'>
     <option value=''></option>
     ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
     ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
     ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
     ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
     ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
   </select>
   </nobr>
   <nobr>
   Problem Type:
   <select name='problemtype'>
     <option value=''></option>
     ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
     ".&option('problem','problemtype').&mt("Homework problem")."</option>
     ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
   </select>
   </nobr>
   <nobr>
   Feedback Mode:
   <select name='problemstatus'>
     <option value=''></option>
     ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
     ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
   </select>
   </nobr>
   <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
   <hr />";
     my $numtoanalyze=$ENV{'form.numtoanalyze'};      my $numtoanalyze=$ENV{'form.numtoanalyze'};
     if (!$numtoanalyze) { $numtoanalyze=20; }      if (!$numtoanalyze) { $numtoanalyze=20; }
     $result.= '<input type="submit" name="problemmode" value="Calculate answers" /> for      $result.= '<input type="submit" name="problemmode" value='.
    &mt('"Calculate answers').'" /> for
              <input type="text" name="numtoanalyze" value="'.               <input type="text" name="numtoanalyze" value="'.
  $numtoanalyze.'" size="5" /> versions of this problem.'.       $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
      &Apache::loncommon::help_open_topic("Analyze_Problem",       '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
      '',undef,undef,300).       '',undef,undef,300).
      '<hr />';       '<hr />';
     return $result;      return $result;
 }  }
   
Line 248  sub finalize_storage { Line 329  sub finalize_storage {
 }  }
   
 sub checkout_msg {  sub checkout_msg {
       my %lt=&Apache::lonlocal::texthash( 
    'resource'=>'The resource needs to be checked out',
    'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
                   'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
                   'checkout'=>'Check out Exam for Viewing',
    'checkout?'=>'Check out Exam?');
     return (<<ENDCHECKOUT);      return (<<ENDCHECKOUT);
 <h2>The resource needs to be checked out</h2>  <h2>$lt{'resource'}</h2>
 As a resource gets checked out, a unique timestamped ID is given to it, and a      <p>$lt{'id_expln'}</p>
 permanent record is left in the system.<p />  <font color="red">
 <font color=red>  <p>$lt{'warning'}</p>
 Checking out resources is subject to course policies, and may exclude future  
 credit even if done erroneously.<p />  
 </font>  </font>
 <form name="checkout" method="POST" action="$ENV{'request.uri'}">  <form name="checkout" method="post" action="$ENV{'request.uri'}">
 <input type="hidden" name="doescheckout" value="yes" />  <input type="hidden" name="doescheckout" value="yes" />
 <input type="button" name="checkoutbutton" value="Check out Exam for Viewing" onClick="javascript:if (confirm('Check out Exam?')) { document.checkout.submit(); }" />  <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
 </form>  </form>
 ENDCHECKOUT  ENDCHECKOUT
 }  }
   
 sub start_problem {  sub firstaccess_msg {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($time,$symb)=@_;
       my ($map)=&Apache::lonnet::decode_symb($symb);
       my $foldertitle=&Apache::lonnet::gettitle($map);
       &Apache::lonxml::debug("map is $map title is $foldertitle");
       return (<<ENDCHECKOUT);
   <h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
   <form name="markaccess" method="post" action="$ENV{'request.uri'}">
   <input type="hidden" name="markaccess" value="yes" />
   <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
   </form>
   ENDCHECKOUT
   }
   
     if ( $Apache::inputtags::part ne '' ||  sub init_problem_globals {
  $Apache::lonhomework::parsing_a_problem) {      my ($type)=@_;
  &Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');      #initialize globals
  #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);      if ($type eq 'problem') {
  return '';   $Apache::inputtags::part='0';
    @Apache::inputtags::partlist=('0');
    $Apache::lonhomework::problemstatus=&get_problem_status('0');
    $Apache::lonhomework::ignore_response_errors=0;
       } elsif ($type eq 'library') {
    $Apache::inputtags::part='';
    @Apache::inputtags::partlist=();
    $Apache::lonhomework::problemstatus='';
    $Apache::lonhomework::ignore_response_errors=1;
     }      }
   
     $Apache::lonhomework::parsing_a_problem=1;  
 #initialize globals  
     $Apache::inputtags::part='0';  
     @Apache::inputtags::partlist=('0');  
     @Apache::inputtags::responselist = ();      @Apache::inputtags::responselist = ();
     @Apache::inputtags::importlist = ();      @Apache::inputtags::importlist = ();
     @Apache::inputtags::previous=();      @Apache::inputtags::previous=();
Line 286  sub start_problem { Line 385  sub start_problem {
     @Apache::structuretags::whilebody=();      @Apache::structuretags::whilebody=();
     @Apache::structuretags::whileline=();      @Apache::structuretags::whileline=();
     $Apache::lonhomework::scantronmode=0;      $Apache::lonhomework::scantronmode=0;
     $Apache::lonhomework::problemstatus=      undef($Apache::lonhomework::name);
  &Apache::lonnet::EXT('resource.0.problemstatus');  
   }
   
   sub reset_problem_globals {
       my ($type)=@_;
       undef(%Apache::lonhomework::history);
       undef(%Apache::lonhomework::results);
       undef($Apache::inputtags::part);
   #don't undef this, lonhomework.pm takes care of this, we use this to 
   #detect if we try to do 2 problems in one file
   #   undef($Apache::lonhomework::parsing_a_problem);
       undef($Apache::lonhomework::name);
   }
   
   sub set_problem_state {
       my ($part)=@_;
       if ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
    $Apache::lonhomework::history{"resource.$part.solved"}=
       'correct_by_student';
       }
   }
   
   sub get_problem_status {
       my ($part)=@_;
       my $problem_status;
       if ($ENV{'request.state'} eq 'construct' &&
    defined($ENV{'form.problemstatus'})) {
    $problem_status=$ENV{'form.problemstatus'};
       } else {
    $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
    &Apache::lonxml::debug("problem status for $part is $problem_status");
    &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
       }
       return $problem_status;
   }
   
   sub start_problem {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   
       if ( $Apache::inputtags::part ne '' ||
    $Apache::lonhomework::parsing_a_problem) {
    &Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
    #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
    return '';
       }
   
       $Apache::lonhomework::parsing_a_problem=1;
       &init_problem_globals('problem');
   
     if (defined($ENV{'scantron.maxquest'})) {      if (defined($ENV{'scantron.maxquest'})) {
  $Apache::lonhomework::scantronmode=1;   $Apache::lonhomework::scantronmode=1;
     }      }
   
       &initialize_storage();
     if ($target ne 'analyze') {      if ($target ne 'analyze') {
  &initialize_storage();  
  if ($target eq 'web') {   if ($target eq 'web') {
     &Apache::lonhomework::showhash(%Apache::lonhomework::history);      &Apache::lonhomework::showhash(%Apache::lonhomework::history);
  }   }
           if ($ENV{'request.state'} eq 'construct') { &set_problem_state('0'); }
  $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');   $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
  &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");   if (($ENV{'request.state'} eq 'construct') &&
       defined($ENV{'form.problemtype'})) {
       $Apache::lonhomework::type=$ENV{'form.problemtype'};
    }
    &Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
     }      }
     if ($Apache::lonhomework::type eq '' ) {      if ($Apache::lonhomework::type eq '' ) {
  my $uri=$ENV{'request.uri'};   my $uri=$ENV{'request.uri'};
Line 313  sub start_problem { Line 464  sub start_problem {
     }      }
   
     #added vars to the scripting enviroment      #added vars to the scripting enviroment
     my $expression='$external::part='.$Apache::inputtags::part.';';      my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
       $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
     &Apache::run::run($expression,$safeeval);      &Apache::run::run($expression,$safeeval);
     my $status;      my $status;
     my $accessmsg;      my $accessmsg;
Line 337  sub start_problem { Line 489  sub start_problem {
     }      }
     $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);      $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
  }   }
    if ($ENV{'form.markaccess'}) {
       &Apache::lonnet::set_first_access('map');
    }
  #handle rand seed in construction space   #handle rand seed in construction space
  my $rndseed=&setup_rndseed($safeeval);   my $rndseed=&setup_rndseed($safeeval);
  my ($symb)=&Apache::lonxml::whichuser();   my ($symb)=&Apache::lonxml::whichuser();
Line 345  sub start_problem { Line 499  sub start_problem {
     $form_tag_start.='<input type="hidden" name="rndseed" value="'.      $form_tag_start.='<input type="hidden" name="rndseed" value="'.
  $rndseed.'" />'.   $rndseed.'" />'.
     '<input type="submit" name="resetdata"      '<input type="submit" name="resetdata"
                              value="New Problem Variation" />'.                               value="'.&mt('New Problem Variation').'" />'.
     '<input type="hidden" name="username"      '<input type="hidden" name="username"
                              value="'.$ENV{'form.username'}.'" /> <br />';                               value="'.$ENV{'form.username'}.'" />';
       if ($ENV{'user.adv'}) {
    $form_tag_start.=
       ' <input type="checkbox" name="showallfoils" ';
    if (defined($ENV{'form.showallfoils'})) {
       $form_tag_start.='checked="on"';
    }
    $form_tag_start.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils');
       }
       $form_tag_start.='<hr />';
  }   }
  ($status,$accessmsg) = &Apache::lonhomework::check_access('0');   ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
  push (@Apache::inputtags::status,$status);   push (@Apache::inputtags::status,$status);
Line 357  sub start_problem { Line 520  sub start_problem {
  &Apache::lonxml::debug("Got $status");   &Apache::lonxml::debug("Got $status");
  if (( $status eq 'CLOSED' ) ||   if (( $status eq 'CLOSED' ) ||
     ( $status eq 'UNCHECKEDOUT') ||      ( $status eq 'UNCHECKEDOUT') ||
       ( $status eq 'NOT_YET_VIEWED') ||
     ( $status eq 'BANNED') ||      ( $status eq 'BANNED') ||
     ( $status eq 'UNAVAILABLE')) {      ( $status eq 'UNAVAILABLE') ||
       ( $status eq 'INVALID_ACCESS')) {
     my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);      my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
     if ( $target eq "web" ) {      if ( $target eq "web" ) {
  $result.= $head_tag_start.'</head>';   $result.= $head_tag_start.'</head>';
  my $msg=$body_tag_start;   my $msg=$body_tag_start;
  if ($status eq 'UNAVAILABLE') {   if ($status eq 'UNAVAILABLE') {
     $result.='<h1>Unable to determine if this resource is open due to network problems. Please try again later.</h1>';      $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
  } else {   } elsif ($status ne 'NOT_YET_VIEWED') {
     $result.='<h1>Not open to be viewed</h1>';      $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
  }   }
  if ($status eq 'CLOSED') {   if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
     $msg.='The problem '.$accessmsg;      $msg.='The problem '.$accessmsg;
  } elsif ($status eq 'UNCHECKEDOUT') {   } elsif ($status eq 'UNCHECKEDOUT') {
     $msg.=&checkout_msg;      $msg.=&checkout_msg;
    } elsif ($status eq 'NOT_YET_VIEWED') {
       $msg.=&firstaccess_msg($accessmsg,$symb);
  }   }
  $result.=$msg.'<br />';   $result.=$msg.'<br />';
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $result.='\begin{document}\noindent \vskip 1 mm  \begin{minipage}{\textwidth}\vskip 0 mm';   $result.='\begin{document}\noindent \vskip 1 mm  \begin{minipage}{\textwidth}\vskip 0 mm';
  if ($status eq 'UNAVAILABLE') {   if ($status eq 'UNAVAILABLE') {
     $result.='Unable to determine if this resource is open due to network problems. Please try again later.\vskip 0 mm ';      $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
  } else {   } else {
     $result.="Problem is not open to be viewed. It $accessmsg \\vskip 0 mm ";      $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
  }   }
     }      }
  } elsif ($target eq 'web') {   } elsif ($target eq 'web') {
     my $name= &get_resource_name($parstack,$safeeval);      my $name= &get_resource_name($parstack,$safeeval);
     if ($status eq 'CAN_ANSWER') {      $result.="$head_tag_start<title>$name</title></head>
  # create a page header and exit  
  $result.="$head_tag_start<title>$name</title></head>  
               $body_tag_start \n $form_tag_start".                $body_tag_start \n $form_tag_start".
   '<input type="hidden" name="submitted" value="yes" />';        '<input type="hidden" name="submitted" value="yes" />';
  if ($ENV{'request.state'} eq "construct") {      # create a page header and exit
     $result.= &problem_web_to_edit_header($rndseed);      if ($ENV{'request.state'} eq "construct") {
  }   $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
  # if we are viewing someone else preserve that info      }
  if (defined $ENV{'form.grade_symb'}) {      # if we are viewing someone else preserve that info
     foreach my $field ('symb','courseid','domain','username') {      if (defined $ENV{'form.grade_symb'}) {
  $result .= '<input type="hidden" name="grade_'.$field.   foreach my $field ('symb','courseid','domain','username') {
     '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";      $result .= '<input type="hidden" name="grade_'.$field.
     }   '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
  }   }
     } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'  
      || $status eq 'CLOSED' || $status eq 'UNAVALAILABLE') {  
  $result.=$head_tag_start.  
     "<title>$name</title></head>\n$body_tag_start\n";  
     }      }
  } elsif ($target eq 'tex') {   } elsif ($target eq 'tex') {
     my $startminipage = '';      my $startminipage = '';
     if ($ENV{'form.problem_split'} ne 'yes') {      if (not $ENV{'form.problem_split'}=~/yes/) {
  $startminipage = '\begin{minipage}{\textwidth}';   $startminipage = '\begin{minipage}{\textwidth}';
     }      }
     my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);  
     if ($name eq '') {  
  $name=&Apache::lonnet::EXT('resource.title');  
  if ($name eq 'con_lost') { $name = ''; }  
     }  
     $Apache::lonhomework::name=$name;  
     my $id = $Apache::inputtags::part;      my $id = $Apache::inputtags::part;
     my $weight = &Apache::lonnet::EXT("resource.$id.weight");      my $weight = &Apache::lonnet::EXT("resource.$id.weight");
     my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'keys');      my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
     my @allkeys = split /,/,$allkeys;      my @packages = split /,/,$packages;
     my $allow_print_points = 0;      my $allow_print_points = 0;
     foreach my $partial_key (@allkeys) {      foreach my $partial_key (@packages) {
  if ($partial_key=~m/weight/) {   if ($partial_key=~m/^part_0$/) {
     $allow_print_points++;      $allow_print_points=1;
  }   }
     }      }
     my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");       my $duedate = &Apache::lonnet::EXT("resource.$id.duedate"); 
Line 437  sub start_problem { Line 592  sub start_problem {
     my @due_file_content = <$temp_file>;      my @due_file_content = <$temp_file>;
     my $due_file_content = $due_file_content[$#due_file_content];      my $due_file_content = $due_file_content[$#due_file_content];
     chomp $due_file_content;      chomp $due_file_content;
     my $name_of_resourse= &get_resource_name($parstack,$safeeval);      my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
     if ($due_file_content ne $duedate) {      if ($due_file_content ne $duedate) {
  $temp_file = Apache::File->new('>'.$filename);   $temp_file = Apache::File->new('>'.$filename);
  print $temp_file "$duedate\n";   print $temp_file "$duedate\n";
  if (not $ENV{'request.symb'} =~ m/\.page_/) {   if (not $ENV{'request.symb'} =~ m/\.page_/) {
     if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {      if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
  $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent '.$startminipage;   $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent '.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
     } else {      } else {
  $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent'.$startminipage;   $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent'.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
  if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}   if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
     }      }
  } else {   } else {
Line 453  sub start_problem { Line 608  sub start_problem {
  }   }
     } else {      } else {
  if (not $ENV{'request.symb'} =~ m/\.page_/) {   if (not $ENV{'request.symb'} =~ m/\.page_/) {
     $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent'.$startminipage;      $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent'.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
     if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}      if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
  } else {   } else {
     $result .= '\vskip 1mm \\\\\\\\';      $result .= '\vskip 1mm \\\\\\\\';
Line 463  sub start_problem { Line 618  sub start_problem {
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.   $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
     &problem_edit_header();      &problem_edit_header();
    $Apache::lonxml::warnings_error_header=
       &mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";
  my $temp=&Apache::edit::insertlist($target,$token);   my $temp=&Apache::edit::insertlist($target,$token);
  $result.=$temp;   $result.=$temp;
     } elsif ($target eq 'modified') {      } elsif ($target eq 'modified') {
Line 481  sub end_problem { Line 638  sub end_problem {
     my $status=$Apache::inputtags::status['-1'];      my $status=$Apache::inputtags::status['-1'];
     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||      if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
  $target eq 'tex') {   $target eq 'tex') {
  if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&   if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
      $status eq 'CAN_ANSWER' ) {  
     # if part is zero, no <part>s existed, so we need to the grading      # if part is zero, no <part>s existed, so we need to the grading
     &Apache::inputtags::grade;      if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
    &Apache::inputtags::grade;
       } else {
    # move any submission data to .hidden
    &Apache::inputtags::hidealldata($Apache::inputtags::part);
       }
  } elsif ( ($target eq 'web' || $target eq 'tex') &&   } elsif ( ($target eq 'web' || $target eq 'tex') &&
   $Apache::inputtags::part eq '0' &&    $Apache::inputtags::part eq '0' &&
   $status ne 'UNCHECKEDOUT') {    $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
     # if part is zero, no <part>s existed, so we need show the current      # if part is zero, no <part>s existed, so we need show the current
     # grading status      # grading status
     my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);      my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
Line 497  sub end_problem { Line 658  sub end_problem {
     (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||      (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
     ($target eq 'answer') || ($target eq 'tex')      ($target eq 'answer') || ($target eq 'tex')
    ) {     ) {
     if ($status eq 'CAN_ANSWER') {      if ($target ne 'tex' &&
  if ($target ne 'tex' &&   $ENV{'form.answer_output_mode'} ne 'tex') {
     $ENV{'form.answer_output_mode'} ne 'tex') {   $result.="</form>";
     $result.="</form></body>\n";   $result.=&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields);
  }   $result.="</body>\n";
     } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||  
      $status eq 'UNCHECKEDOUT' ) {  
  if ($target ne 'tex') {  
     $result.="</body>\n";  
  }  
     }      }
     if ($target eq 'web') {      if ($target eq 'web') {
  $result.=&Apache::lonxml::xmlend();   $result.=&Apache::lonxml::xmlend();
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $endminipage = '';   my $endminipage = '';
  if ($ENV{'form.problem_split'} ne 'yes') {   if (not $ENV{'form.problem_split'}=~/yes/) {
     $endminipage = '\end{minipage}';      $endminipage = '\end{minipage}';
  }   }
  $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';                  if ($ENV{'form.print_discussions'} eq 'yes') {
  if (not $ENV{'request.symb'} =~ m/\.page_/) {      $result.=&Apache::lonxml::xmlend($target,$parser);
     $result .= $endminipage.'\end{document} ';      $result=~s/<\/html>//;
  } else {   } else {
     $result .= '';      $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
       if (not $ENV{'request.symb'} =~ m/\.page_/) {
    $result .= $endminipage.'\end{document} ';
       } else {
    $result .= '';
       }
  }   }
     }      }
  }   }
Line 537  sub end_problem { Line 698  sub end_problem {
     @Apache::inputtags::response=();      @Apache::inputtags::response=();
     $result=&Apache::response::mandatory_part_meta;      $result=&Apache::response::mandatory_part_meta;
  }   }
    $result.=&Apache::response::meta_part_order();
    $result.=&Apache::response::meta_response_order();
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  &Apache::lonxml::debug("in end_problem with $target, edit");   &Apache::lonxml::debug("in end_problem with $target, edit");
  $result = &problem_edit_footer();   $result = &problem_edit_footer();
Line 545  sub end_problem { Line 708  sub end_problem {
     if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {      if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
  &Apache::inputtags::check_for_duplicate_ids();   &Apache::inputtags::check_for_duplicate_ids();
     }      }
     undef(%Apache::lonhomework::history);  
     undef(%Apache::lonhomework::results);      &reset_problem_globals('problem');
     undef($Apache::inputtags::part);  
     undef($Apache::lonhomework::parsing_a_problem);  
   
     return $result;      return $result;
 }  }
Line 557  sub end_problem { Line 718  sub end_problem {
 sub start_library {  sub start_library {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my ($result,$head_tag_start,$body_tag_start,$form_tag_start);      my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
       if ($$tagstack[0] eq 'library') {
    &init_problem_globals('library');
    $Apache::lonhomework::type='problem';
       }
     if ($target eq 'edit') {      if ($target eq 'edit') {
  ($result,$head_tag_start,$body_tag_start,$form_tag_start)=   ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
     &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);      &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
Line 591  sub end_library { Line 755  sub end_library {
      $ENV{'request.state'} eq "construct") {       $ENV{'request.state'} eq "construct") {
  $result.='</form></body>'.&Apache::lonxml::xmlend();   $result.='</form></body>'.&Apache::lonxml::xmlend();
     }      }
       if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
     return $result;      return $result;
 }  }
   
 sub start_block {  sub start_definetag {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   
     my $result;      my $result;
   
       my $name = $token->[2]->{'name'};
       my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
       if ($name=~/^\//) {
    $result=
    '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
       } else {
    $result=
    '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
       }
       $skip=~s/\</\&lt\;/gs;
       $skip=~s/\>/\&gt\;/gs;
       $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
       return $result;
   }
   
   sub end_definetag {
       return '';
   }
   
   sub start_block {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
       my $result;
   
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||      if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
  $target eq 'tex' || $target eq 'analyze') {   $target eq 'tex' || $target eq 'analyze') {
  my $code = $token->[2]->{'condition'};   my $code = $token->[2]->{'condition'};
  if ($code) {   if (defined($code)) {
     if (!$Apache::lonxml::default_homework_loaded) {      if (!$Apache::lonxml::default_homework_loaded) {
  &Apache::lonxml::default_homework_load($safeeval);   &Apache::lonxml::default_homework_load($safeeval);
     }      }
Line 612  sub start_block { Line 801  sub start_block {
     $result='1';      $result='1';
  }   }
  if ( ! $result ) {   if ( ! $result ) {
     my $skip=&Apache::lonxml::get_all_text("/block",$parser);      my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
     &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");      &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
  }   }
  $result='';   $result='';
Line 639  sub end_block { Line 828  sub end_block {
 }  }
   
 sub start_languageblock {  sub start_languageblock {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
     my $result;      my $result;
   
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||      if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
  $target eq 'tex' || $target eq 'analyze') {   $target eq 'tex' || $target eq 'analyze') {
  &Apache::lonxml::startredirection();   my $include = $token->[2]->{'include'};
    my $exclude = $token->[2]->{'exclude'};
           my %languages=&Apache::loncommon::display_languages();
           $result='1';
    if ($include) {
               $result='';
               foreach (split(/\,/,$include)) {
                   if ($languages{$_}) { $result='1'; }
               }
    }
           if ($exclude) {
               foreach (split(/\,/,$exclude)) {
                   if ($languages{$_}) { $result='0'; }
               }
    }
    if ( ! $result ) {
       my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
      $style);
       &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
    }
    $result='';
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result .=&Apache::edit::tag_start($target,$token);   $result .=&Apache::edit::tag_start($target,$token);
  $result .=&Apache::edit::text_arg('Include Language:','include',   $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
   $token,40);    $token,40);
  $result .=&Apache::edit::text_arg('Exclude Language:','exclude',   $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
   $token,40);    $token,40);
  $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();   $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
     } elsif ($target eq 'modified') {      } elsif ($target eq 'modified') {
Line 665  sub start_languageblock { Line 874  sub start_languageblock {
 sub end_languageblock {  sub end_languageblock {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result;      my $result;
       if ($target eq "edit") {
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||  
  $target eq 'tex' || $target eq 'analyze') {  
  my $text=&Apache::lonxml::endredirection();  
  my $include= &Apache::lonxml::get_param('include',$parstack,$safeeval);  
  my $exclude= &Apache::lonxml::get_param('exclude',$parstack,$safeeval);  
  my %languages=&Apache::loncommon::display_languages();  
  $result='1';  
  if ($include) {  
     $result='';  
     foreach (split(/\,/,$include)) {  
  if ($languages{$_}) { $result='1'; }  
     }  
  }  
  if ($exclude) {  
     foreach (split(/\,/,$exclude)) {  
  if ($languages{$_}) { $result='0'; }  
     }  
  }  
  if ( ! $result ) {  
     $result='';  
  } else {  
     $result=$text;  
  }  
     } elsif ($target eq "edit") {  
  $result.= &Apache::edit::tag_end($target,$token,'');   $result.= &Apache::edit::tag_end($target,$token,'');
     }      }
     return $result;      return $result;
 }  }
   
 sub start_instructorcomment {  sub start_instructorcomment {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
     my $result;      my $result;
   
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||      if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
  $target eq 'tex' || $target eq 'analyze') {   $target eq 'tex' || $target eq 'analyze') {
         $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);          $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
  if ( ! $result ) {   if ( (! $result) or ($ENV{'form.instructor_comments'} eq 'hide')) {
     my $skip=&Apache::lonxml::get_all_text("/instructorcomment",$parser);      my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
      $parser,$style);
     &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");      &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
  }   }
  $result='';   $result='';
Line 746  sub start_while { Line 932  sub start_while {
  }   }
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result .=&Apache::edit::tag_start($target,$token);   $result .=&Apache::edit::tag_start($target,$token);
  $result .=&Apache::edit::text_arg('Test Condition:','condition',   $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
   $token,40);    $token,40);
  $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();   $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
     } elsif ($target eq 'modified') {      } elsif ($target eq 'modified') {
Line 772  sub end_while { Line 958  sub end_while {
  while ($return) {   while ($return) {
     if (time-$starttime >      if (time-$starttime >
  $Apache::lonnet::perlvar{'lonScriptTimeout'}) {   $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
  $return = 0; $error=1; next;   #$return = 0; $error=1; next;
     }      }
     $result.=&Apache::scripttag::xmlparse($bodytext);      $result.=&Apache::scripttag::xmlparse($bodytext);
     $return = &Apache::run::run($code,$safeeval);      $return = &Apache::run::run($code,$safeeval);
  }   }
  if ($error) {   if ($error) {
     &Apache::lonxml::error('<pre>Code ran too long. It ran for more than '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' seconds occured while running &lt;while$gt; on line '.$line.'</pre>');      &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running &lt;while&gt; on line').' '.$line.'</pre>');
  }   }
     } elsif ($target eq "edit") {      } elsif ($target eq "edit") {
  $result.= &Apache::edit::tag_end($target,$token,'');   $result.= &Apache::edit::tag_end($target,$token,'');
Line 850  sub shuffle { Line 1036  sub shuffle {
     my $a=shift;      my $a=shift;
     my $i;      my $i;
     if (defined(@$a)) {      if (defined(@$a)) {
  &Apache::response::setrandomnumber();   &Apache::response::pushrandomnumber();
  for($i=@$a;--$i;) {   for($i=@$a;--$i;) {
     my $j=int(&Math::Random::random_uniform() * ($i+1));      my $j=int(&Math::Random::random_uniform() * ($i+1));
     next if $i == $j;      next if $i == $j;
     @$a[$i,$j] = @$a[$j,$i];      @$a[$i,$j] = @$a[$j,$i];
  }   }
    &Apache::response::poprandomnumber();
     }      }
 }  }
   
Line 879  sub start_part { Line 1066  sub start_part {
     @Apache::inputtags::response=();      @Apache::inputtags::response=();
     @Apache::inputtags::previous=();      @Apache::inputtags::previous=();
     @Apache::inputtags::previous_version=();      @Apache::inputtags::previous_version=();
     $Apache::lonhomework::problemstatus=      $Apache::lonhomework::problemstatus=&get_problem_status($id);
  &Apache::lonnet::EXT("resource.$id.problemstatus");  
     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);      my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
       my $newtype=&Apache::lonnet::EXT("resource.$id.type");
       if ($newtype) { $Apache::lonhomework::type=$newtype; }
   
       my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
       $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
       &Apache::run::run($expression,$safeeval);
   
     if ($target eq 'meta') {      if ($target eq 'meta') {
  return &Apache::response::mandatory_part_meta;   my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
    return &Apache::response::mandatory_part_meta.
          &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
     } elsif ($target eq 'web' || $target eq 'grade' ||      } elsif ($target eq 'web' || $target eq 'grade' ||
      $target eq 'answer' || $target eq 'tex') {       $target eq 'answer' || $target eq 'tex') {
  if ($hidden) {   if ($hidden) {
Line 895  sub start_part { Line 1089  sub start_part {
     my $expression='$external::datestatus="'.$status.'";';      my $expression='$external::datestatus="'.$status.'";';
     $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';      $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
     &Apache::run::run($expression,$safeeval);      &Apache::run::run($expression,$safeeval);
     if ( $status eq 'CLOSED' ) {      if ($ENV{'request.state'} eq 'construct') {
    &set_problem_state($Apache::inputtags::part); 
       }
       if (( $status eq 'CLOSED' ) ||
    ( $status eq 'UNCHECKEDOUT') ||
    ( $status eq 'NOT_YET_VIEWED') ||
    ( $status eq 'BANNED') ||
    ( $status eq 'UNAVAILABLE') ||
    ( $status eq 'INVALID_ACCESS')) {
  my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);   my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
  if ( $target eq "web" ) {   if ( $target eq "web" ) {
     $result="<br />Part is not open to be viewed. It $accessmsg<br />";      $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
  } elsif ( $target eq 'tex' ) {   } elsif ( $target eq 'tex' ) {
     $result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";      if (not $ENV{'form.problem_split'}=~/yes/) {
    $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
       } else {
    $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
       }
  }   }
     } else {      } else {
  if ($target eq 'tex') {   if ($target eq 'tex') {
     $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';      if (not $ENV{'form.problem_split'}=~/yes/) {
    if ($$tagstack[-2] eq 'td') {
       $result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
    } else {
       $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
    }
       }
     my $weight = &Apache::lonnet::EXT("resource.$id.weight");      my $weight = &Apache::lonnet::EXT("resource.$id.weight");
     if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}      my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
       my @allkeys = split /,/,$allkeys;
       my $allow_print_points = 0;
       foreach my $partial_key (@allkeys) {
    if ($partial_key=~m/^part_(.*)$/) {
       if ($1 ne '0') {$allow_print_points=1;}
    }
       }
       if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
    } elsif ($target eq 'web') {
       $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
  }   }
     }      }
  }   }
Line 914  sub start_part { Line 1136  sub start_part {
  $result.=&Apache::edit::tag_start($target,$token);   $result.=&Apache::edit::tag_start($target,$token);
  $result.=&Apache::edit::text_arg('Part ID:','id',$token).   $result.=&Apache::edit::text_arg('Part ID:','id',$token).
     &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").      &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
       '&nbsp;&nbsp;'.
   &Apache::edit::text_arg('Displayed Part Description:','display',$token).
  &Apache::edit::end_row().&Apache::edit::start_spanning_row();   &Apache::edit::end_row().&Apache::edit::start_spanning_row();
     } elsif ($target eq 'modified') {      } elsif ($target eq 'modified') {
  my $constructtag=&Apache::edit::get_new_args($token,$parstack,   my $constructtag=&Apache::edit::get_new_args($token,$parstack,
      $safeeval,'id');       $safeeval,'id','display');
  if ($constructtag) {   if ($constructtag) {
       #limiting ids to only letters numbers, and space
       $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
     $result = &Apache::edit::rebuild_tag($token);      $result = &Apache::edit::rebuild_tag($token);
     $result.=&Apache::edit::handle_insert();      $result.=&Apache::edit::handle_insert();
  }   }
Line 934  sub end_part { Line 1160  sub end_part {
     my $result='';      my $result='';
     if ( $target eq 'meta' ) {      if ( $target eq 'meta' ) {
  $result='';   $result='';
     } elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {      } elsif ($target eq 'grade') {
  $result=&Apache::inputtags::grade;   if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
       !$hidden) {
       $result=&Apache::inputtags::grade;
    } else {
       # move any submission data to .hidden
       &Apache::inputtags::hidealldata($Apache::inputtags::part);
    }
     } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {      } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
  my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,   my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
  $target);   $target);
  if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';}   if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
       $gradestatus='';
    }
  $result=$gradestatus;   $result=$gradestatus;
    if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';} 
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result=&Apache::edit::end_table();   $result=&Apache::edit::end_table();
     }      }
Line 952  sub end_part { Line 1187  sub end_part {
 sub start_preduedate {  sub start_preduedate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
    &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
  if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&   if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
     $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&      $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
     $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {      &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
     &Apache::lonxml::get_all_text("/preduedate",$parser);      &Apache::lonxml::get_all_text("/preduedate",$parser);
  }   }
     }      }
Line 967  sub end_preduedate { Line 1203  sub end_preduedate {
   
 sub start_postanswerdate {  sub start_postanswerdate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'grade') {
  if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {   if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
     &Apache::lonxml::get_all_text("/postanswerdate",$parser);      &Apache::lonxml::get_all_text("/postanswerdate",$parser);
  }   }
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  return '\vskip 0 mm \noindent';   &Apache::lonxml::get_all_text("/postanswerdate",$parser);
     }      }
     return '';      return '';
 }  }
Line 987  sub start_notsolved { Line 1223  sub start_notsolved {
  $target eq 'tex') {   $target eq 'tex') {
  my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};   my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
  &Apache::lonxml::debug("not solved has :$gradestatus:");   &Apache::lonxml::debug("not solved has :$gradestatus:");
  if ($gradestatus =~ /^correct/) {   if ($gradestatus =~ /^correct/ &&
       &Apache::response::show_answer()) {
     &Apache::lonxml::debug("skipping");      &Apache::lonxml::debug("skipping");
     &Apache::lonxml::get_all_text("/notsolved",$parser);      &Apache::lonxml::get_all_text("/notsolved",$parser);
  }   }
Line 1004  sub start_solved { Line 1241  sub start_solved {
     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||      if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
  $target eq 'tex') {   $target eq 'tex') {
  my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};   my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
  if ($gradestatus !~ /^correct/) {   if ($gradestatus !~ /^correct/ ||
       !&Apache::response::show_answer()) {
     &Apache::lonxml::get_all_text("/solved",$parser);      &Apache::lonxml::get_all_text("/solved",$parser);
  }   }
     }      }
Line 1015  sub end_solved { Line 1253  sub end_solved {
     return '';      return '';
 }  }
   
   sub start_problemtype {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
    $target eq 'tex' || $target eq 'analyze') {
    my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
    if (!defined($mode)) { $mode='show'; }
    my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
    my $found=0;
    foreach my $type (split(',',$for)) {
       if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
    }
    if ($mode eq 'show' && !$found) {
       &Apache::lonxml::get_all_text("/problemtype",$parser);
    }
    if ($mode eq 'hide' && $found) {
       &Apache::lonxml::get_all_text("/problemtype",$parser);
    }
       } elsif ($target eq 'edit') {
    $result .=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::select_arg('Mode:','mode',
      [['show','Show'],
       ['hide','Hide']]
      ,$token);
    $result .=&Apache::edit::checked_arg('When used as type(s):','for',
        [ ['exam','Exam/Quiz Problem'],
          ['survey','Survey'],
          ['problem','Homework Problem'] ]
        ,$token);
    $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'mode','for');
    if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
       }
       return $result;
   }
   
   sub end_problemtype {
       return '';
   }
   
 sub start_startouttext {  sub start_startouttext {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my @result=(''.'');      my @result=(''.'');
Line 1029  sub end_startouttext { Line 1309  sub end_startouttext {
   
     if ($target eq 'edit') {      if ($target eq 'edit') {
  $text=&Apache::lonxml::get_all_text("endouttext",$parser);   $text=&Apache::lonxml::get_all_text("endouttext",$parser);
  $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>   $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
 <td>Delete:".  <td>".&mt('Delete:').
                  &Apache::edit::deletelist($target,$token)                   &Apache::edit::deletelist($target,$token)
  ."</td>   ."</td>
 <td>".  <td>".
                  &Apache::edit::insertlist($target,$token).                   &Apache::edit::insertlist($target,$token).
  &Apache::edit::end_row().   &Apache::edit::end_row().
                  &Apache::edit::start_spanning_row()."\n"                   &Apache::edit::start_spanning_row()."\n"
  .'<table><tr><td>'.   . &Apache::loncommon::helpLatexCheatsheet () .
  &Apache::loncommon::help_open_topic("Greek_Symbols",   &Apache::edit::editfield($token->[1],$text,"",80,8,1);
      'Greek Symbols',  
      undef,undef,600)  
  .'</td><td>'.  
  &Apache::loncommon::help_open_topic("Other_Symbols",  
      'Other Symbols',  
      undef,undef,600)  
  .'</td></tr></table>'.  
  &Apache::edit::editfield($token->[1],$text,"",80,4);  
     }      }
     if ($target eq 'modified') {      if ($target eq 'modified') {
  $text=&Apache::lonxml::get_all_text("endouttext",$parser);   $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
  $result='<startouttext />'.&Apache::edit::modifiedfield();  
     }      }
     if ($target eq 'tex') {      if ($target eq 'tex') {
  $result .= '\noindent ';   $result .= '\noindent ';
Line 1089  sub delete_startouttext { Line 1360  sub delete_startouttext {
     return 1;      return 1;
 }  }
   
   sub start_simpleeditbutton {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result='';
       if (($ENV{'form.simple_edit_button'} ne 'off') &&
    ($target eq 'web') &&
           (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
           my $url=$ENV{'request.noversionuri'};
           $url=~s/\?.*$//;
    $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
                   '<a href="'.$url.'/smpedit">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
   &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
       }
       return $result;
   }
   
   sub end_simpleeditbutton {
       return '';
   }
   
 1;  1;
 __END__  __END__
Removed from v.1.186  
changed lines
  Added in v.1.273

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