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Diff for /loncom/homework/structuretags.pm between versions 1.17 and 1.48

version 1.17, 2000/11/29 00:51:57 version 1.48, 2001/07/18 20:08:34
Line 1 Line 1
 # The LearningOnline Network with CAPA # <script> definiton  # The LearningOnline Network with CAPA 
   # definition of tags that give a structure to a document
   # 2/19 Guy
   # 6/26/2001 fixed extra web display at end of <web></web> tags
 package Apache::structuretags;   package Apache::structuretags; 
   
 use strict;  use strict;
 use Apache::lonnet;  use Apache::lonnet;
   
 sub BEGIN {  sub BEGIN {
   &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','web','tex','part'));    &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
   #  &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
 }  }
   
 sub start_web {  sub start_web {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);    my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
   return $bodytext;    if ($target eq 'web') {
       return $bodytext;
     } 
     return '';
 }  }
   
 sub end_web {  sub end_web {
       return '';
 }  }
   
 sub start_tex {  sub start_tex {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);    my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
     if ($target eq 'tex') {
       return $bodytext
     }
   return '';    return '';
 }  }
   
 sub end_tex {  sub end_tex {
       return '';
   }
   
   sub page_start {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,$parser,$safeeval);
     my $head_tag_start='<head>'.&Apache::lonxml::registerurl();
     my $body_tag_start='<body onLoad="'.&Apache::lonxml::loadevents().'" '.
     'onUnload="'.&Apache::lonxml::unloadevents().'" '.
       'bgcolor="#FFFFFF">';
     return ($result,$head_tag_start,$body_tag_start);
 }  }
   
 sub start_problem {  sub start_problem {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   unless ($target eq 'meta') {  
     my $args ='';  #intialize globals
     if ( $#$parstack > -1 ) {    $Apache::inputtags::part='0';
       $args=$$parstack[$#$parstack];    @Apache::inputtags::responselist = ();
     }    $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
     my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);    &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
     $Apache::inputtags::part='0';    if ($Apache::lonhomework::type eq '') {
     my $expression='$external::part='.$Apache::inputtags::part.';';      $Apache::lonhomework::type='homework';
     $safeeval->share_from('Apache::inputtags',['@part']);    }
   #adeed vars to the scripting enviroment
     my $expression='$external::part='.$Apache::inputtags::part.';';
     &Apache::run::run($expression,$safeeval);
     my $status;
     my $datemsg;
   
     #should get back a <html> or the neccesary stuff to start XML/MathML
     my ($result,$head_tag_start,$body_tag_start)=
       &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
   
     if ($target eq 'web' || $target eq 'grade') {
       ($status,$datemsg) = &Apache::lonhomework::check_date('0');
       push (@Apache::inputtags::status,$status);
       my $expression='$external::datestatus="'.$status.'";';
       $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
     &Apache::run::run($expression,$safeeval);      &Apache::run::run($expression,$safeeval);
     return "<title>$name</title>\n<body bgcolor=#FFFFFF>\n<form name=\"lonhomework\" method=\"POST\" action=\"".$ENV{'request.uri'}."\">";      if ( $status eq 'CLOSED' ) {
   }         my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
         if ( $target eq "web" ) {
    $result.= $head_tag_start.'</head>';
    return $result . $body_tag_start .
     " <br />Problem is not open to be viewed. The problem $datemsg<br />";
         }
       }
     }
     if ($target eq 'web') {
       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;
       if ($status eq 'CAN_ANSWER') {
         # create a page header and exit
         $result.="$head_tag_start<title>$name</title></head>\n
                 $body_tag_start\n
                 <form name=\"lonhomework\" method=\"POST\" action=\"".$ENV{'request.uri'}."\">".
    '<input type="hidden" name="submitted" value="yes" />';
         if ($ENV{'request.state'} eq "construct") {
    $result.='<input type="hidden" name="problemmode" value="View" />
                    <input type="submit" name="problemmode" value="Edit" /><hr />';
         }
         return $result;
       } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' || $status eq 'CLOSED') {
         return $result.$head_tag_start."<title>$name</title></head>\n$body_tag_start\n";
       }
     }
     if ($target eq 'edit') {
       $result.=$head_tag_start."</head>".$body_tag_start.
         '<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'">
          <input type="hidden" name="submitted" value="edit" />
          <input type="hidden" name="problemmode" value="Edit" />
          <input type="submit" name="problemmode" value="View" />
          <input type="submit" name="Undo" value="undo" /> <hr />
         ';
       my $temp=&Apache::edit::insertlist($target,$token);
       $result.=$temp;
       return $result;
     }
     if ($target eq 'modified') {
       $result=$token->[4];
       $result.=&Apache::edit::handle_insert();
       return $result;
     }
     return '';
 }  }
   
 sub end_problem {  sub end_problem {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $result='';    my $result='';
   unless ($target eq 'meta') {    my $status=$Apache::inputtags::status['-1'];
     $result="</form></body>\n";    if ($target eq 'grade' || $target eq 'web' ) {
   } else {      if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
     if ($Apache::inputtags::part ne '0') {         $status eq 'CAN_ANSWER') {
         # if part is zero, no <part>s existed, so we need to the grading
         &Apache::inputtags::grade;
       } elsif ($Apache::inputtags::part eq '0') {
         # if part is zero, no <part>s existed, so we need show the current 
         # grading status
         $result.= &Apache::inputtags::gradestatus($Apache::inputtags::part);
       }
       if ($target eq 'web') { 
         if ($status eq 'CAN_ANSWER') {
    $result.="</form></body>\n"; 
         } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {
    $result.="</body>\n";
         }
       }
     }
     if ($target eq 'meta') {
       if ($Apache::inputtags::part eq '0') {
       $result=&Apache::response::mandatory_part_meta;        $result=&Apache::response::mandatory_part_meta;
     }      }
   }    }
     if ($target eq 'edit') {
       &Apache::lonxml::debug("in end_problem with $target, edit");
       $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
     }
     return $result;
   }
   
   sub start_library {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my ($result,$head_tag_start,$body_tag_start)=
       &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
     if ($target eq 'edit') {
       $result.=$head_tag_start."</head>".$body_tag_start.
         '<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'">
          <input type="hidden" name="submitted" value="edit" />
          <input type="hidden" name="problemmode" value="Edit" />
          <input type="submit" name="problemmode" value="View" />
          <input type="submit" name="Undo" value="undo" /> <hr />
         ';
       my $temp=&Apache::edit::insertlist($target,$token);
       $result.=$temp;
       return $result;
     }
     if ($target eq 'modified') {
       $result=$token->[4];
       $result.=&Apache::edit::handle_insert();
       return $result;
     }
     return '';
   }
   
   sub end_library {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result='';
     if ($target eq 'edit') {
       $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
     }
   return $result;    return $result;
 }  }
   
 sub start_block {  sub start_block {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   
   my $code = @$parstack[$#$parstack];    if ($target eq 'web' || $target eq 'grade') {
   $code =~ s/\"//g;      my $code = @$parstack[$#$parstack];
   $code .=';return $condition;';      $code =~ s/\"//g;
 #  print "<br>$code<br>";      $code .=';return $condition;';
   my $result = &Apache::run::run($code,$safeeval);      #  print "<br />$code<br />";
   if ( ! $result ) {       my $result = &Apache::run::run($code,$safeeval);
 #    my $skip=$$parser[$#$parser]->get_text("/block");      &Apache::lonxml::debug("block :$code: returned :$result:");
     my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]);      if ( ! $result ) { 
 #    print "skipped $skip";        my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]);
         &Apache::lonxml::debug("skipping ahead :$skip: $$parser[$#$parser]");
       }
   }    }
   return "";    return "";
 }  }
   
 sub end_block {  sub end_block {
     return '';
 }  }
   
 sub start_while {  sub start_while {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   
   my $code = @$parstack[$#$parstack];    my $code = @$parstack[$#$parstack];
   $code =~ s/\"//g;    $code =~ s/\"//g;
Line 93  sub start_while { Line 233  sub start_while {
 }  }
   
 sub end_while {  sub end_while {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $code = pop @Apache::structuretags::whileconds;    my $code = pop @Apache::structuretags::whileconds;
   my $bodytext = pop @Apache::structuretags::whilebody;    my $bodytext = pop @Apache::structuretags::whilebody;
   my $result = &Apache::run::run($code,$safeeval);    my $result = &Apache::run::run($code,$safeeval);
Line 110  sub end_while { Line 250  sub end_while {
 #  ...   #  ... 
 # </randomlist>  # </randomlist>
 sub start_randomlist {  sub start_randomlist {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]);    my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]);
   my $b_parser= HTML::TokeParser->new(\$body);    my $b_parser= HTML::TokeParser->new(\$body);
   my $b_tok;    my $b_tok;
Line 125  sub start_randomlist { Line 265  sub start_randomlist {
       $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);        $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);
       $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";        $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
       push(@randomlist,$list_item);        push(@randomlist,$list_item);
    #  print "<BR><B>START-TAG $b_tok->[1], $b_tok->[4], $list_item</B>";     #  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4], $list_item</b>";
     }      }
     if($b_tok->[0] eq 'T') { # text      if($b_tok->[0] eq 'T') { # text
     # what to do with text in between tags?      # what to do with text in between tags?
       #  print "<B>TEXT $b_tok->[1]</B><BR>";        #  print "<b>TEXT $b_tok->[1]</b><br />";
     }      }
     # if($b_tok->[0] eq 'E') { # end tag, should not happen      # if($b_tok->[0] eq 'E') { # end tag, should not happen
       #  print "<B>END-TAG $b_tok->[1]</B><BR>";        #  print "<b>END-TAG $b_tok->[1]</b><br />";
     # }      # }
   }    }
   my @idx_arr = (0 .. $#randomlist);    my @idx_arr = (0 .. $#randomlist);
Line 157  sub shuffle { Line 297  sub shuffle {
 }  }
   
 sub end_randomlist {  sub end_randomlist {
     return '';
 }  }
   
 sub start_part {  sub start_part {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $args ='';    my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
   if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }    if ($id eq '') { $id = $Apache::lonxml::curdepth; }
   my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);  
   $Apache::inputtags::part=$id;    $Apache::inputtags::part=$id;
     @Apache::inputtags::responselist = ();
   if ($target eq 'meta') {    if ($target eq 'meta') {
     return &Apache::response::mandatory_part_meta;      return &Apache::response::mandatory_part_meta;
     } elsif ($target eq 'web' || $target eq 'grade') {
       my ($status,$datemsg) = &Apache::lonhomework::check_date($id);
       push (@Apache::inputtags::status,$status);
       my $expression='$external::datestatus="'.$status.'";';
       $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
       &Apache::run::run($expression,$safeeval);
       if ( $status eq 'CLOSED' ) {
         my $bodytext=&Apache::lonxml::get_all_text("/part",$$parser[$#$parser]);
         if ( $target eq "web" ) {
    return "<br />Part is not open to be viewed. It $datemsg<br />";
         }
       }
   }    }
     return '';
 }  }
   
 sub end_part {  sub end_part {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     &Apache::lonxml::debug("in end_part $target ");
     my $status=$Apache::inputtags::status['-1'];
     pop @Apache::inputtags::status;
     if ( $target eq 'meta' ) { return ''; }
     if ( $target eq 'grade' && $status eq 'CAN_ANSWER') {
       return &Apache::inputtags::grade;
     }
     if ($target eq 'web') {
       return &Apache::inputtags::gradestatus($Apache::inputtags::part);
     }
     return '';
   }
   
   sub start_preduedate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if ($target eq 'web' || $target eq 'grade') {
       if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' ) {
         &Apache::lonxml::get_all_text("/preduedate",$$parser[$#$parser]);
       }
     }
     return '';
   }
   
   sub end_preduedate {
     return '';
   }
   
   sub start_postanswerdate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if ($target eq 'web' || $target eq 'grade') {
       if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
         &Apache::lonxml::get_all_text("/postanswerdate",$$parser[$#$parser]);
       }
     }
     return '';
   }
   
   sub end_postanswerdate {
     return '';
   }
   
   sub start_notsolved {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if ($target eq 'web' || $target eq 'grade') {
       my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
       &Apache::lonxml::debug("not solved has :$gradestatus:");
       if ($gradestatus =~ /^correct/) {
         &Apache::lonxml::debug("skipping");
         &Apache::lonxml::get_all_text("/notsolved",$$parser[$#$parser]);
       }
     }
     return '';
   }
   
   sub end_notsolved {
     return '';
   }
   
   sub start_solved {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if ($target eq 'web' || $target eq 'grade') {
       my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
       if ($gradestatus !~ /^correct/) {
         &Apache::lonxml::get_all_text("/solved",$$parser[$#$parser]);
       }
     }
     return '';
   }
   
   sub end_solved {
     return '';
   }
   
   sub start_startouttext {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my @result=(''.'');
     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
     return (@result);
   }
   sub end_startouttext {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result='';
     my $text='';
   
     if ($target eq 'edit') {
       $text=&Apache::lonxml::get_all_text("endouttext",$$parser[$#$parser]);
       $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
   <td>Delete:".
     &Apache::edit::deletelist($target,$token)
     ."</td>
   <td>".
     &Apache::edit::insertlist($target,$token).
       "</td>
   </tr><tr><td colspan=\"3\">\n".
    &Apache::edit::editfield($token->[1],$text,"",50,4);
     }
     if ($target eq 'modified') {
       $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
       $result='<startouttext />'.&Apache::edit::modifiedfield();
     }
     return $result;
   }
   sub start_endouttext {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result='';
     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
     if ($target eq "modified") { $result='<endouttext />'; }
     return $result;
   }
   sub end_endouttext {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my @result=('','');
     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
     return (@result);
   }
   sub delete_startouttext {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   #  my $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
     my $text=$$parser['-1']->get_text("/endouttext");
     my $token=$$parser['-1']->get_token();
     &Apache::lonxml::debug("Deleting :$text: and :$token->[0]:$token->[1]:$token->[2]: for startouttext");
     &Apache::lonxml::end_tag($tagstack,$parstack,$token);
     # Deleting 2 parallel tag pairs, but we need the numbers later to look like 
     # they did the last time round
     &Apache::lonxml::increasedepth($token);
     &Apache::lonxml::decreasedepth($token);
     return 1;
 }  }
   
 1;  1;
Removed from v.1.17  
changed lines
  Added in v.1.48

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