Annotation of loncom/homework/structuretags.pm, revision 1.59

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.33      albertel    3: # 2/19 Guy
1.44      ng          4: # 6/26/2001 fixed extra web display at end of <web></web> tags
1.58      www         5: # 8/17,8/18 Gerd Kortemeyer
1.54      www         6: 
1.1       albertel    7: package Apache::structuretags; 
                      8: 
                      9: use strict;
                     10: use Apache::lonnet;
                     11: 
                     12: sub BEGIN {
1.48      albertel   13:   &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
1.37      albertel   14: #  &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
1.10      albertel   15: }
                     16: 
                     17: sub start_web {
1.40      albertel   18:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.10      albertel   19:   my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
1.19      albertel   20:   if ($target eq 'web') {
                     21:     return $bodytext;
                     22:   } 
                     23:   return '';
1.10      albertel   24: }
                     25: 
                     26: sub end_web {
1.44      ng         27:     return '';
1.10      albertel   28: }
                     29: 
                     30: sub start_tex {
1.40      albertel   31:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.10      albertel   32:   my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
1.19      albertel   33:   if ($target eq 'tex') {
                     34:     return $bodytext
                     35:   }
1.10      albertel   36:   return '';
                     37: }
                     38: 
                     39: sub end_tex {
1.44      ng         40:     return '';
1.9       albertel   41: }
                     42: 
1.48      albertel   43: sub page_start {
                     44:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                     45:   my $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,$parser,$safeeval);
                     46:   my $head_tag_start='<head>'.&Apache::lonxml::registerurl();
                     47:   my $body_tag_start='<body onLoad="'.&Apache::lonxml::loadevents().'" '.
1.50      albertel   48: 	  'onUnload="'.&Apache::lonxml::unloadevents().'" ';
                     49:   my $background=&Apache::lonxml::get_param('background',$parstack,$safeeval);
                     50:   if ($background) {
                     51:     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
                     52:                                         $background;
                     53:     $body_tag_start.='background="'.$background.'" ';
                     54:   } else {
                     55:     my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
                     56:     if ($bgcolor) {
                     57:       $body_tag_start.='bgcolor="'.$bgcolor.'" ';
                     58:     } else {
                     59:       $body_tag_start.='bgcolor="#ffffff"';
                     60:     }
                     61:   }
                     62:   $body_tag_start.='>';
1.48      albertel   63:   return ($result,$head_tag_start,$body_tag_start);
                     64: }
                     65: 
1.9       albertel   66: sub start_problem {
1.40      albertel   67:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19      albertel   68: 
                     69: #intialize globals
                     70:   $Apache::inputtags::part='0';
                     71:   @Apache::inputtags::responselist = ();
1.51      albertel   72:   @Apache::inputtags::previous=();
1.42      albertel   73:   $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
                     74:   &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
                     75:   if ($Apache::lonhomework::type eq '') {
1.53      albertel   76:     my $uri=$ENV{'request.uri'};
                     77:     if ($uri=~/\.(\w+)$/) {
                     78:       $Apache::lonhomework::type=$1;
                     79:       &Apache::lonxml::debug("Using type of $1");
                     80:     } else {
                     81:       $Apache::lonhomework::type='problem';
                     82:       &Apache::lonxml::debug("Using default type, problem, :$uri:");
                     83:     }
1.42      albertel   84:   }
1.58      www        85: 
1.19      albertel   86: #adeed vars to the scripting enviroment
                     87:   my $expression='$external::part='.$Apache::inputtags::part.';';
                     88:   &Apache::run::run($expression,$safeeval);
1.22      albertel   89:   my $status;
1.55      www        90:   my $accessmsg;
1.36      albertel   91: 
1.41      albertel   92:   #should get back a <html> or the neccesary stuff to start XML/MathML
1.48      albertel   93:   my ($result,$head_tag_start,$body_tag_start)=
                     94:     &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.36      albertel   95: 
1.58      www        96:   if ($Apache::lonhomework::type eq 'exam') {
                     97:       if ($target eq 'web') {
                     98:           my $token=$Apache::lonhomework::history{"resource.0.outtoken"};
                     99:           if (($ENV{'form.doescheckout'}) && (!$token)) {
                    100: 	     $token=&Apache::lonxml::maketoken();
                    101:           }
                    102:           $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
                    103:       }
                    104:       if ($target eq 'meta') {
1.59    ! www       105:      
1.58      www       106: 	  return (<<ENDSTORES);
                    107: <stores part="0" name="outtoken" type="string" 
1.59    ! www       108:  display="Document ID checked out"></stores>
1.58      www       109: <stores part="0" name="checkouttime" type="date"
1.59    ! www       110:  display="Time checked out"></stores>
1.58      www       111: <stores part="0" name="outremote" type="string" 
1.59    ! www       112:  display="Client IP checked out from"></stores>
1.58      www       113: 
                    114: <stores part="0" name="intoken" type="string" 
1.59    ! www       115:  display="Document ID checked in"></stores>
1.58      www       116: <stores part="0" name="checkintime" type="date"
1.59    ! www       117:  display="Time checked in"></stores>
1.58      www       118: <stores part="0" name="inremote" type="string" 
1.59    ! www       119:  display="Client IP checked in from"></stores>
1.58      www       120: ENDSTORES
1.57      www       121:       }
                    122:   }
1.34      albertel  123:   if ($target eq 'web' || $target eq 'grade') {
1.55      www       124:     ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
1.22      albertel  125:     push (@Apache::inputtags::status,$status);
1.24      albertel  126:     my $expression='$external::datestatus="'.$status.'";';
                    127:     $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                    128:     &Apache::run::run($expression,$safeeval);
1.54      www       129:     if (( $status eq 'CLOSED' ) ||
                    130:         ( $status eq 'UNCHECKEDOUT') ||
                    131:         ( $status eq 'BANNED')) {
1.21      albertel  132:       my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
                    133:       if ( $target eq "web" ) {
1.41      albertel  134: 	$result.= $head_tag_start.'</head>';
1.54      www       135:         my $msg=$body_tag_start.
                    136: 	    '<h1>Not open to be viewed</h1>';
                    137:         if ($status eq 'CLOSED') {
1.55      www       138: 	    $msg.='The problem '.$accessmsg;
1.54      www       139: 	} elsif ($status eq 'UNCHECKEDOUT') {
1.56      www       140:             $msg.=(<<ENDCHECKOUT);
                    141: <h2>The resource needs to be checked out</h2>
                    142: As a resource gets checked out, a unique timestamped ID is given to it, and a
                    143: permanent record is left in the system.<p />
                    144: <font color=red>
                    145: Checking out resources is subject to course policies, and may exclude future
                    146: credit even if done erroneously.<p />
                    147: </font>  
                    148: <form method=post>
1.57      www       149: <input type=submit name="doescheckout" 
                    150: value="Check out Exam for Viewing" />
1.56      www       151: </form>
                    152: ENDCHECKOUT
1.54      www       153:         }
                    154: 	return $result.$msg.'<br />';
1.21      albertel  155:       }
1.41      albertel  156:     }
1.21      albertel  157:   }
1.19      albertel  158:   if ($target eq 'web') {
1.39      albertel  159:     my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.30      albertel  160:     if ($name eq '') { 
                    161:       $name=&Apache::lonnet::EXT('resource.title');
                    162:       if ($name eq 'con_lost') { $name = ''; }
                    163:     }
                    164:     $Apache::lonhomework::name=$name;
1.22      albertel  165:     if ($status eq 'CAN_ANSWER') {
                    166:       # create a page header and exit
1.41      albertel  167:       $result.="$head_tag_start<title>$name</title></head>\n
                    168:               $body_tag_start\n
1.36      albertel  169:               <form name=\"lonhomework\" method=\"POST\" action=\"".$ENV{'request.uri'}."\">".
                    170: 		'<input type="hidden" name="submitted" value="yes" />';
                    171:       if ($ENV{'request.state'} eq "construct") {
                    172: 	$result.='<input type="hidden" name="problemmode" value="View" />
                    173:                  <input type="submit" name="problemmode" value="Edit" /><hr />';
                    174:       }
                    175:       return $result;
1.29      albertel  176:     } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' || $status eq 'CLOSED') {
1.41      albertel  177:       return $result.$head_tag_start."<title>$name</title></head>\n$body_tag_start\n";
1.22      albertel  178:     }
                    179:   }
1.34      albertel  180:   if ($target eq 'edit') {
1.41      albertel  181:     $result.=$head_tag_start."</head>".$body_tag_start.
                    182:       '<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'">
                    183:        <input type="hidden" name="submitted" value="edit" />
                    184:        <input type="hidden" name="problemmode" value="Edit" />
                    185:        <input type="submit" name="problemmode" value="View" />
                    186:        <input type="submit" name="Undo" value="undo" /> <hr />
1.49      albertel  187:        <input type="submit" name="submit" value="Submit Changes" /><br />
1.41      albertel  188:       ';
1.39      albertel  189:     my $temp=&Apache::edit::insertlist($target,$token);
1.36      albertel  190:     $result.=$temp;
                    191:     return $result;
1.34      albertel  192:   }
1.37      albertel  193:   if ($target eq 'modified') {
                    194:     $result=$token->[4];
                    195:     $result.=&Apache::edit::handle_insert();
                    196:     return $result;
                    197:   }
1.19      albertel  198:   return '';
1.9       albertel  199: }
                    200: 
                    201: sub end_problem {
1.40      albertel  202:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.16      albertel  203:   my $result='';
1.24      albertel  204:   my $status=$Apache::inputtags::status['-1'];
1.40      albertel  205:   if ($target eq 'grade' || $target eq 'web' ) {
1.28      albertel  206:     if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
                    207:        $status eq 'CAN_ANSWER') {
1.19      albertel  208:       # if part is zero, no <part>s existed, so we need to the grading
                    209:       &Apache::inputtags::grade;
                    210:     } elsif ($Apache::inputtags::part eq '0') {
                    211:       # if part is zero, no <part>s existed, so we need show the current 
                    212:       # grading status
1.20      albertel  213:       $result.= &Apache::inputtags::gradestatus($Apache::inputtags::part);
1.41      albertel  214:     }
1.22      albertel  215:     if ($target eq 'web') { 
                    216:       if ($status eq 'CAN_ANSWER') {
                    217: 	$result.="</form></body>\n"; 
1.28      albertel  218:       } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.41      albertel  219: 	$result.="</body>\n";
                    220:       }
1.50      albertel  221:       $result.=&Apache::lonxml::xmlend();
1.22      albertel  222:     }
1.41      albertel  223:   }
1.34      albertel  224:   if ($target eq 'meta') {
1.18      albertel  225:     if ($Apache::inputtags::part eq '0') {
1.16      albertel  226:       $result=&Apache::response::mandatory_part_meta;
                    227:     }
                    228:   }
1.34      albertel  229:   if ($target eq 'edit') {
                    230:     &Apache::lonxml::debug("in end_problem with $target, edit");
1.48      albertel  231:     $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
                    232:   }
                    233:   return $result;
                    234: }
                    235: 
                    236: sub start_library {
                    237:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    238:   my ($result,$head_tag_start,$body_tag_start)=
                    239:     &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    240:   if ($target eq 'edit') {
                    241:     $result.=$head_tag_start."</head>".$body_tag_start.
                    242:       '<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'">
                    243:        <input type="hidden" name="submitted" value="edit" />
                    244:        <input type="hidden" name="problemmode" value="Edit" />
                    245:        <input type="submit" name="problemmode" value="View" />
                    246:        <input type="submit" name="Undo" value="undo" /> <hr />
                    247:       ';
                    248:     my $temp=&Apache::edit::insertlist($target,$token);
                    249:     $result.=$temp;
                    250:     return $result;
                    251:   }
                    252:   if ($target eq 'modified') {
                    253:     $result=$token->[4];
                    254:     $result.=&Apache::edit::handle_insert();
                    255:     return $result;
                    256:   }
                    257:   return '';
                    258: }
                    259: 
                    260: sub end_library {
                    261:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    262:   my $result='';
                    263:   if ($target eq 'edit') {
1.34      albertel  264:     $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
                    265:   }
1.16      albertel  266:   return $result;
1.1       albertel  267: }
                    268: 
                    269: sub start_block {
1.40      albertel  270:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.1       albertel  271: 
1.38      albertel  272:   if ($target eq 'web' || $target eq 'grade') {
                    273:     my $code = @$parstack[$#$parstack];
                    274:     $code =~ s/\"//g;
                    275:     $code .=';return $condition;';
                    276:     #  print "<br />$code<br />";
                    277:     my $result = &Apache::run::run($code,$safeeval);
                    278:     &Apache::lonxml::debug("block :$code: returned :$result:");
                    279:     if ( ! $result ) { 
                    280:       my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]);
                    281:       &Apache::lonxml::debug("skipping ahead :$skip: $$parser[$#$parser]");
                    282:     }
1.1       albertel  283:   }
                    284:   return "";
                    285: }
                    286: 
                    287: sub end_block {
1.38      albertel  288:   return '';
1.4       tsai      289: }
                    290: 
                    291: sub start_while {
1.40      albertel  292:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.4       tsai      293: 
                    294:   my $code = @$parstack[$#$parstack];
                    295:   $code =~ s/\"//g;
                    296:   $code .=';return $condition;';
                    297: 
1.5       tsai      298:   push( @Apache::structuretags::whileconds, $code); 
1.4       tsai      299:   my $result = &Apache::run::run($code,$safeeval);
                    300:   my $bodytext=$$parser[$#$parser]->get_text("/while");
1.5       tsai      301:   push( @Apache::structuretags::whilebody, $bodytext);
                    302:   if ( $result ) { 
1.8       albertel  303:     &Apache::lonxml::newparser($parser,\$bodytext);
1.4       tsai      304:   }
                    305:   return "";
                    306: }
                    307: 
                    308: sub end_while {
1.40      albertel  309:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.5       tsai      310:   my $code = pop @Apache::structuretags::whileconds;
                    311:   my $bodytext = pop @Apache::structuretags::whilebody;
                    312:   my $result = &Apache::run::run($code,$safeeval);
                    313:   if ( $result ) { 
1.8       albertel  314:     &Apache::lonxml::newparser($parser,\$bodytext);
1.5       tsai      315:   } 
                    316:   return "";
1.1       albertel  317: }
1.6       tsai      318: 
                    319: # <randomlist> 
                    320: #  <tag1>..</tag1>
                    321: #  <tag2>..</tag2>
                    322: #  <tag3>..</tag3>
                    323: #  ... 
                    324: # </randomlist>
                    325: sub start_randomlist {
1.40      albertel  326:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.9       albertel  327:   my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]);
1.6       tsai      328:   my $b_parser= HTML::TokeParser->new(\$body);
                    329:   my $b_tok;
                    330:   my @randomlist;
                    331:   my $list_item;
                    332: 
                    333:   while($b_tok = $b_parser->get_token() ) {
                    334:     if($b_tok->[0] eq 'S') { # start tag
                    335:     # get content of the tag until matching end tag
                    336:     # get all text upto the matching tag
                    337:     # and push the content into @randomlist
1.9       albertel  338:       $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);
1.7       tsai      339:       $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1.6       tsai      340:       push(@randomlist,$list_item);
1.32      albertel  341:    #  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4], $list_item</b>";
1.6       tsai      342:     }
                    343:     if($b_tok->[0] eq 'T') { # text
                    344:     # what to do with text in between tags?
1.32      albertel  345:       #  print "<b>TEXT $b_tok->[1]</b><br />";
1.6       tsai      346:     }
                    347:     # if($b_tok->[0] eq 'E') { # end tag, should not happen
1.32      albertel  348:       #  print "<b>END-TAG $b_tok->[1]</b><br />";
1.6       tsai      349:     # }
                    350:   }
1.7       tsai      351:   my @idx_arr = (0 .. $#randomlist);
                    352:   &Apache::structuretags::shuffle(\@idx_arr);
                    353:   my $bodytext = '';
                    354:   for(0 .. $#randomlist) {
                    355:     $bodytext .= "$randomlist[ $idx_arr[$_] ]";
                    356:   }
1.8       albertel  357: 
                    358:   &Apache::lonxml::newparser($parser,\$bodytext);
1.6       tsai      359:   return "";
1.7       tsai      360: }
                    361: 
                    362: sub shuffle {
                    363:     my $a=shift;
                    364:     my $i;
1.52      albertel  365:     &Apache::response::setrandomnumber();
1.7       tsai      366:     for($i=@$a;--$i;) {
                    367:       my $j=int rand($i+1);
                    368:       next if $i == $j;
                    369:       @$a[$i,$j] = @$a[$j,$i];
                    370:     }
1.6       tsai      371: }
                    372: 
                    373: sub end_randomlist {
1.46      albertel  374:   return '';
1.6       tsai      375: }
                    376: 
1.11      albertel  377: sub start_part {
1.40      albertel  378:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.39      albertel  379:   my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.47      albertel  380:   if ($id eq '') { $id = $Apache::lonxml::curdepth; }
1.14      albertel  381:   $Apache::inputtags::part=$id;
1.18      albertel  382:   @Apache::inputtags::responselist = ();
1.51      albertel  383:   @Apache::inputtags::previous=();
1.15      www       384:   if ($target eq 'meta') {
1.16      albertel  385:     return &Apache::response::mandatory_part_meta;
1.37      albertel  386:   } elsif ($target eq 'web' || $target eq 'grade') {
1.55      www       387:     my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1.23      albertel  388:     push (@Apache::inputtags::status,$status);
                    389:     my $expression='$external::datestatus="'.$status.'";';
                    390:     $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                    391:     &Apache::run::run($expression,$safeeval);
                    392:     if ( $status eq 'CLOSED' ) {
1.21      albertel  393:       my $bodytext=&Apache::lonxml::get_all_text("/part",$$parser[$#$parser]);
                    394:       if ( $target eq "web" ) {
1.55      www       395: 	return "<br />Part is not open to be viewed. It $accessmsg<br />";
1.21      albertel  396:       }
                    397:     }
1.15      www       398:   }
1.19      albertel  399:   return '';
1.11      albertel  400: }
                    401: 
                    402: sub end_part {
1.40      albertel  403:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.18      albertel  404:   &Apache::lonxml::debug("in end_part $target ");
1.28      albertel  405:   my $status=$Apache::inputtags::status['-1'];
1.23      albertel  406:   pop @Apache::inputtags::status;
1.19      albertel  407:   if ( $target eq 'meta' ) { return ''; }
1.37      albertel  408:   if ( $target eq 'grade' && $status eq 'CAN_ANSWER') {
                    409:     return &Apache::inputtags::grade;
1.28      albertel  410:   }
1.37      albertel  411:   if ($target eq 'web') {
                    412:     return &Apache::inputtags::gradestatus($Apache::inputtags::part);
                    413:   }
                    414:   return '';
1.11      albertel  415: }
1.1       albertel  416: 
1.25      albertel  417: sub start_preduedate {
1.40      albertel  418:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34      albertel  419:   if ($target eq 'web' || $target eq 'grade') {
1.29      albertel  420:     if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
                    421: 	$Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' ) {
1.26      albertel  422:       &Apache::lonxml::get_all_text("/preduedate",$$parser[$#$parser]);
1.24      albertel  423:     }
                    424:   }
                    425:   return '';
                    426: }
                    427: 
1.25      albertel  428: sub end_preduedate {
1.24      albertel  429:   return '';
                    430: }
                    431: 
1.25      albertel  432: sub start_postanswerdate {
1.40      albertel  433:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34      albertel  434:   if ($target eq 'web' || $target eq 'grade') {
1.24      albertel  435:     if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.26      albertel  436:       &Apache::lonxml::get_all_text("/postanswerdate",$$parser[$#$parser]);
1.24      albertel  437:     }
                    438:   }
                    439:   return '';
                    440: }
                    441: 
1.25      albertel  442: sub end_postanswerdate {
1.24      albertel  443:   return '';
                    444: }
                    445: 
1.25      albertel  446: sub start_notsolved {
1.40      albertel  447:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34      albertel  448:   if ($target eq 'web' || $target eq 'grade') {
1.24      albertel  449:     my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                    450:     &Apache::lonxml::debug("not solved has :$gradestatus:");
                    451:     if ($gradestatus =~ /^correct/) {
                    452:       &Apache::lonxml::debug("skipping");
1.26      albertel  453:       &Apache::lonxml::get_all_text("/notsolved",$$parser[$#$parser]);
1.24      albertel  454:     }
                    455:   }
                    456:   return '';
                    457: }
                    458: 
1.25      albertel  459: sub end_notsolved {
1.24      albertel  460:   return '';
                    461: }
                    462: 
                    463: sub start_solved {
1.40      albertel  464:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34      albertel  465:   if ($target eq 'web' || $target eq 'grade') {
1.24      albertel  466:     my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                    467:     if ($gradestatus !~ /^correct/) {
                    468:       &Apache::lonxml::get_all_text("/solved",$$parser[$#$parser]);
                    469:     }
                    470:   }
                    471:   return '';
                    472: }
                    473: 
                    474: sub end_solved {
                    475:   return '';
                    476: }
1.34      albertel  477: 
                    478: sub start_startouttext {
1.40      albertel  479:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35      albertel  480:   my @result=(''.'');
                    481:   if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
                    482:   return (@result);
1.34      albertel  483: }
                    484: sub end_startouttext {
1.40      albertel  485:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34      albertel  486:   my $result='';
1.35      albertel  487:   my $text='';
                    488: 
1.34      albertel  489:   if ($target eq 'edit') {
1.35      albertel  490:     $text=&Apache::lonxml::get_all_text("endouttext",$$parser[$#$parser]);
1.43      albertel  491:     $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
1.42      albertel  492: <td>Delete:".
                    493:   &Apache::edit::deletelist($target,$token)
                    494:   ."</td>
                    495: <td>".
                    496:   &Apache::edit::insertlist($target,$token).
                    497:     "</td>
                    498: </tr><tr><td colspan=\"3\">\n".
1.45      albertel  499: 	&Apache::edit::editfield($token->[1],$text,"",50,4);
1.35      albertel  500:   }
                    501:   if ($target eq 'modified') {
                    502:     $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
                    503:     $result='<startouttext />'.&Apache::edit::modifiedfield();
1.34      albertel  504:   }
                    505:   return $result;
                    506: }
                    507: sub start_endouttext {
1.40      albertel  508:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34      albertel  509:   my $result='';
1.43      albertel  510:   if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1.35      albertel  511:   if ($target eq "modified") { $result='<endouttext />'; }
1.34      albertel  512:   return $result;
                    513: }
                    514: sub end_endouttext {
1.40      albertel  515:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35      albertel  516:   my @result=('','');
                    517:   if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                    518:   return (@result);
1.34      albertel  519: }
1.45      albertel  520: sub delete_startouttext {
                    521:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    522: #  my $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
                    523:   my $text=$$parser['-1']->get_text("/endouttext");
                    524:   my $token=$$parser['-1']->get_token();
                    525:   &Apache::lonxml::debug("Deleting :$text: and :$token->[0]:$token->[1]:$token->[2]: for startouttext");
                    526:   &Apache::lonxml::end_tag($tagstack,$parstack,$token);
                    527:   # Deleting 2 parallel tag pairs, but we need the numbers later to look like 
                    528:   # they did the last time round
                    529:   &Apache::lonxml::increasedepth($token);
                    530:   &Apache::lonxml::decreasedepth($token);
                    531:   return 1;
                    532: }
1.34      albertel  533: 
1.1       albertel  534: 1;
                    535: __END__

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