File:  [LON-CAPA] / loncom / xml / scripttag.pm
Revision 1.175: download - view: text, annotated - select for diffs
Fri Jul 1 19:59:25 2016 UTC (7 years, 10 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
- Course "Authoring" Space
  "Import a File" and "Image" blocks in Colorful Editor include a "Choose File"
  link which allows selection of published files from "Course Authoring" Space,
  or upload of a new file (with auto-publication).

    1: # The LearningOnline Network with CAPA
    2: # <script> definiton
    3: #
    4: # $Id: scripttag.pm,v 1.175 2016/07/01 19:59:25 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: package Apache::scripttag;
   30: 
   31: use strict;
   32: use Apache::lonnet;
   33: use Apache::lonlocal;
   34: use Apache::lonxml();
   35: use Apache::londefdef();
   36: use Apache::style();
   37: 
   38: #Globals
   39: # this used to pass around the standard callsub arguments to a tag func
   40: # so xmlparse can reenter the inner_xmlparse loop.
   41: 
   42: @Apache::scripttag::parser_env = ();
   43: BEGIN {
   44:   &Apache::lonxml::register('Apache::scripttag',
   45: 			    ('script','scriptlib','parserlib','import',
   46: 			     'window','windowlink','togglebox','display','storetc','physnet',
   47: 			     'standalone','comment','num','parse','algebra',
   48: 			     'LONCAPA_INTERNAL_TURN_STYLE_ON',
   49: 			     'LONCAPA_INTERNAL_TURN_STYLE_OFF'));
   50: }
   51: 
   52: sub start_LONCAPA_INTERNAL_TURN_STYLE_ON {
   53:     $Apache::lonxml::usestyle=1;
   54:     $Apache::lonxml::style_values='';
   55:     return ('','no');
   56: }
   57: 
   58: sub end_LONCAPA_INTERNAL_TURN_STYLE_ON {
   59:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   60:     my $end=&Apache::lonxml::get_param('end',$parstack,$safeeval);
   61:     if (defined($end)) {
   62: 	&Apache::lonxml::end_tag($tagstack,$parstack,$token);
   63:     }
   64:     return ('','no');
   65: }
   66: 
   67: sub start_LONCAPA_INTERNAL_TURN_STYLE_OFF {
   68:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   69:     $Apache::lonxml::usestyle=0;
   70:     my $end=&Apache::lonxml::get_param('end',$parstack,$safeeval);
   71:     if (!$end) {
   72: 	$Apache::lonxml::style_values=$$parstack[-1];
   73: 	$Apache::lonxml::style_end_values=$$parstack[-1];
   74:     } else {
   75: 	$Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
   76: 	$Apache::lonxml::style_end_values='';
   77:     }
   78:     return ('','no');
   79: }
   80: 
   81: sub end_LONCAPA_INTERNAL_TURN_STYLE_OFF {
   82:     return ('','no');
   83: }
   84: 
   85: sub start_script {
   86:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   87:   @Apache::scripttag::parser_env = @_;
   88:   my $result='';
   89:   my $type= &Apache::lonxml::get_param('type',$parstack,$safeeval);
   90:   &Apache::lonxml::debug("found type of $type");
   91:   if ($type eq "loncapa/perl") {
   92:     if ( $target eq "modified" ) {
   93: 	$result=$token->[4].&Apache::edit::modifiedfield('/script',$parser);
   94:     } elsif ( $target eq 'web' || $target eq 'tex' ||
   95: 	      $target eq 'grade' || $target eq 'webgrade' ||
   96: 	      $target eq 'answer' || $target eq 'analyze' ) {
   97: 	my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
   98: 	if (!$Apache::lonxml::default_homework_loaded) {
   99: 	    &Apache::lonxml::default_homework_load($safeeval);
  100: 	}
  101: 	&Apache::run::run($bodytext,$safeeval);
  102: 	if (($target eq 'answer') &&
  103: 	    ($env{'form.answer_output_mode'} ne 'tex') &&
  104: 	    ($Apache::lonhomework::viewgrades == 'F')) {
  105: 	    $Apache::lonxml::evaluate--;
  106: 	    my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser();
  107: 	    $uname =~s/\W//g;
  108: 	    $udom  =~s/\W//g;
  109: 	    my $function_name = 
  110: 		join('_','LONCAPA_scriptvars',$uname,$udom,
  111: 		     $env{'form.counter'},$Apache::lonxml::curdepth);
  112:             &Apache::lonxml::add_script_result(
  113: 	             &Apache::loncommon::modal_adhoc_window($function_name,500,500,
  114:                             '<pre style="background-color:#ffffff;">'.
  115:                             &Apache::run::dump($target,$safeeval).'</pre>',
  116:                             &mt('Script Vars'))."<br />");
  117: 	}
  118:     } elsif ($target eq "edit" ) {
  119:       #&Apache::run::run($bodytext,$safeeval);
  120:       #$result="<br /> &lt;$token->[1]&gt; output: <br />$bodytext<br />Source:<br />";
  121:     	my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
  122:     	$result=&Apache::edit::tag_start($target,$token,'Script');
  123: 
  124:         my $depth = $Apache::lonxml::curdepth;
  125:         $result.='<span id="LC_edit_problem_codemirror">';
  126:         unless ($env{'environment.nocodemirror'}) {
  127:             # only show button if codemirror activated
  128:             $result.='<input type="button" id="fitsize'.$depth.'" value="'.&mt("Dynamic size").
  129:             '" onclick="autosize(\''.$depth.'\')" />';
  130:         }
  131:         $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4).'</span>';
  132: 
  133:         unless ($env{'environment.nocodemirror'}) {
  134:             $result.='<script type="text/javascript">
  135:                 var cm'.$depth.' = CodeMirror.fromTextArea(document.getElementById("homework_edit_'.$depth.'"),
  136:                 {
  137:                     mode: "perl",
  138:                     lineWrapping: true,
  139:                     lineNumbers: true,
  140:                     tabSize: 4,
  141:                     indentUnit: 4,
  142:                     autoCloseBrackets: true,
  143:                     styleActiveLine: true,
  144:                     
  145:                     extraKeys: {
  146:                         "Tab": "indentMore",
  147:                         "Shift-Tab": "indentLess"
  148:                     }
  149:                 });
  150:                 if(sessionStorage.getItem("autosized_'.$depth.'") != null) {
  151:                     document.getElementById("fitsize'.$depth.'").value = "'.&mt("Fixed size").'";
  152:                     cm'.$depth.'.setSize("","auto");
  153:                 }
  154:             </script>';
  155:         }
  156:                 
  157: 
  158:     } elsif ($target eq 'meta') {
  159: 	my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
  160:     }
  161:   } else {
  162:       my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
  163:       if ($target ne "meta" && $target ne 'tex' && $target ne 'answer') {
  164: 	  $result = $token->[4];
  165: 	  $result.=$bodytext;
  166:           my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
  167:           my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
  168:           my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
  169:           my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
  170:           if ($src ne '') {
  171:               if ($src !~ m{^(/|https?://)}) {
  172:                   my $cleanhref = &Apache::londefdef::clean_docs_httpref($src,$url,$cdom,$cnum);
  173:                   if ($cleanhref) {
  174:                       &Apache::lonxml::extlink($cleanhref);
  175:                   }
  176:               }
  177:           } elsif (($type eq 'text/javascript') && ($bodytext ne '')) {
  178:               if ($url =~ m{^\Q/uploaded/$cdom/$cnum/\E(docs|supplemental)/}) {
  179:                   if ($bodytext =~ m{\.addMediaSrc\((["'])((?!\1).)+\1\);}) {
  180:                       my $quote = $1;
  181:                       if ($bodytext =~ m{\Q.addMediaSrc($quote\E([^$quote]+)\Q$quote)\E}) {
  182:                           my $fname = $1;
  183:                           my $cleanhref =
  184:                               &Apache::londefdef::clean_docs_httpref($fname,$url,$cdom,$cnum);
  185:                           if ($cleanhref) {
  186:                               &Apache::lonxml::extlink($cleanhref);
  187:                           }
  188:                       }
  189:                   }
  190:                   if ($bodytext =~ m{\.set\w+(Src|Swf)\(["']}i) {
  191:                       my @srcs = split(/\.set/,$bodytext);
  192:                       if (scalar(@srcs) > 1) {
  193:                           foreach my $item (@srcs) {
  194:                               if ($item =~ m{^(FlashPlayerSwf|MediaSrc|XMPSrc|ConfigurationSrc|PosterImageSrc)\((['"])(?:(?!\2).)+\2\)}is) {
  195:                                   my $srctype = $1;
  196:                                   my $quote = $2;
  197:                                   my ($fname) = ($item =~ m{^\Q$srctype($quote\E([^$quote]+)\Q$quote)\E}); 
  198:                                   my $cleanhref =
  199:                                       &Apache::londefdef::clean_docs_httpref($fname,$url,$cdom,$cnum);
  200:                                   if ($cleanhref) {
  201:                                       &Apache::lonxml::extlink($cleanhref);
  202:                                       if ($srctype eq 'ConfigurationSrc') {
  203:                                           if ($cleanhref =~ m{^(.+/)configuration_express\.xml$}) {
  204: #
  205: # Camtasia 8.1: express_show/spritesheet.png needed, and included in zip archive.
  206: # Not referenced directly in <main>.html or <main>_player.html files,
  207: # so call lonxml::extlink() here to include httpref for the uploaded file.
  208: # (where <main> is name user gave to file/archive).
  209: #
  210: 
  211:                                               my $spritesheet = $1.'express_show/spritesheet.png';
  212:                                               if (&Apache::lonnet::repcopy_userfile($spritesheet) eq 'ok') {
  213:                                                   &Apache::lonxml::extlink($spritesheet);
  214:                                               }
  215:                                           }
  216: #
  217: # Camtasia 8.4: express_show/spritesheet.min.css needed, and included in zip archive.
  218: # Not referenced directly in <main>.html or <main>_player.html files,
  219: # so call lonxml::extlink() here to include httpref for the uploaded file.
  220: # (where <main> is name user gave to file/archive).
  221: #
  222:                                           my $spritesheet_css = $1.'express_show/spritesheet.min.css';
  223:                                           if (&Apache::lonnet::repcopy_userfile($spritesheet_css) eq 'ok') {
  224:                                               &Apache::lonxml::extlink($spritesheet_css);
  225:                                           }
  226:                                       } elsif ($srctype eq 'PosterImageSrc') {
  227:                                           if ($fname =~ m{^(.+)_First_Frame\.png$}) {
  228:                                               my $prefix = $1;
  229:                                               my ($path) = ($cleanhref =~ m{^(.+/)\Q$fname\E});
  230: #
  231: # Camtasia 8.1: <main>_Thumbnails.png needed, and included in zip archive.
  232: # Not referenced directly in <main>.html or <main>_player.html files,
  233: # so call lonxml::extlink() here to include httpref for the uploaded file
  234: # (where <main> is name user gave to file/archive).
  235: #
  236:                                               my $thumbnail = $path.$prefix.'_Thumbnails.png';
  237:                                               if (&Apache::lonnet::repcopy_userfile($thumbnail) eq 'ok') {
  238:                                                   &Apache::lonxml::extlink($thumbnail);
  239:                                               }
  240:                                           }
  241:                                       }
  242:                                   }
  243:                               }
  244:                           }
  245:                       }
  246:                   }
  247:                   if ($bodytext =~ /\(document,\s*(['"])script\1,\s*\[([^\]]+)\]\);/s) {
  248:                       my $scriptslist = $2;
  249:                       my @srcs = split(/\s*,\s*/,$scriptslist);
  250:                       foreach my $src (@srcs) {
  251:                           if ($src =~ /(["'])(?:(?!\1).)+\.js\1/) {
  252:                               my $quote = $1;
  253:                               my ($fname) = ($src =~ m/\Q$quote\E([^$quote]+)\Q$quote\E/);
  254:                               my $cleanhref =
  255:                                   &Apache::londefdef::clean_docs_httpref($fname,$url,$cdom,$cnum);
  256:                               if ($cleanhref) {
  257:                                   &Apache::lonxml::extlink($cleanhref);
  258:                               }
  259:                           }
  260:                       }
  261:                   }
  262:                   if ($bodytext =~ m{loadScript\(\s*(['"])((?:(?!\1).)+\.js)\1,\s*function}is) {
  263:                       my $fname = $2;
  264:                       if ($fname) {
  265:                           my $cleanhref =
  266:                               &Apache::londefdef::clean_docs_httpref($fname,$url,$cdom,$cnum);
  267:                           if ($cleanhref) {
  268:                               &Apache::lonxml::extlink($cleanhref);
  269:                           }
  270:                       }
  271:                   }
  272:               }
  273:           }
  274:       }
  275:   }
  276:   return $result;
  277: }
  278: 
  279: sub end_script {
  280:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  281:   if ( $target eq "meta" ) { return ''; } 
  282:   my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
  283:   my $result='';
  284:   #other script blocks need to survive
  285:   if ($type ne "loncapa/perl" && $target ne 'tex') {
  286:     return $token->[2];
  287:   } elsif ($target eq 'edit' ) {
  288:     return &Apache::edit::end_table();
  289:   } elsif ($target eq 'answer') {
  290:     $Apache::lonxml::evaluate++;
  291:   }
  292:   return '';
  293: }
  294: 
  295: sub start_display {
  296:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  297:   @Apache::scripttag::parser_env = @_;
  298:   my $result;
  299: 
  300:   if ( $target eq "modified" ) {
  301:       $result=$token->[4].&Apache::edit::modifiedfield("/display",$parser);
  302:   } elsif ( $target eq 'web' || $target eq 'tex' ||
  303: 	    $target eq 'grade' || $target eq 'webgrade' ||
  304: 	    $target eq 'answer' || $target eq 'analyze') {
  305:       my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
  306:       if (!$Apache::lonxml::default_homework_loaded) {
  307: 	  &Apache::lonxml::default_homework_load($safeeval);
  308:       }
  309:       $result=&Apache::run::run($bodytext,$safeeval);
  310:       if ($target eq 'grade' || $target eq 'answer' ||
  311: 	  $target eq 'analyze') {
  312: 	  # grade/answer/analyxe should produce no output but if we
  313: 	  # are redirecting, the redirecter should know what to do
  314: 	  # with the output
  315: 	  if (!$Apache::lonxml::redirection) { $result=''; }
  316:       }
  317:       $Apache::lonxml::post_evaluate=0;
  318:   } elsif ($target eq "edit" ) {
  319:     my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
  320:     #$result = 
  321:     #  "<br /> &lt;$token->[1]&gt; output: <br />$bodytext<br />Source:<br />";
  322:     #$result.=&Apache::edit::editfield($token->[1],$bodytext,'',40,1);
  323:     $result=&Apache::edit::tag_start($target,$token,'Script With Display');
  324:     $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,1)
  325:   } elsif ($target eq 'meta') {
  326:       my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
  327:   }
  328:   return $result;
  329: }
  330: 
  331: sub end_display {
  332:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  333:   if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
  334:   return '';
  335: }
  336: 
  337: sub start_scriptlib {
  338:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  339:   my $bodytext;
  340:   my $result ='';
  341:   my $error='';
  342: 
  343:   if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
  344:       $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
  345:       $target eq 'analyze' || $target eq 'webgrade') {
  346:     $bodytext=$$parser[$#$parser]->get_text("/scriptlib");
  347:     $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
  348: 				     $$parstack[$#$parstack]);
  349:     my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
  350: 					       $bodytext);
  351:     my $script=&Apache::lonnet::getfile($location);
  352:     if ($script == -1) {
  353:       if ($target eq 'edit') {
  354:         $error='</tr><tr><td>'.&mt('Errors').'</td><td colspan="2"><b>'.&mt(' Unable to find [_1]','<span class="LC_filename">'.$location.'</span>').'</b></td>'."\n";
  355:       } else {
  356: 	&Apache::lonxml::error("<b> Unable to find <i>$location</i> for scriptlib</b>");
  357: 	return "";
  358:       }
  359:     }
  360:     &Apache::run::run($script,$safeeval);
  361:     #&Apache::lonxml::debug("ran $bodytext:<br />".&Apache::lonnet::getfile($bodytext)."<br />");
  362:   }
  363:   if ($target eq "edit" ) {
  364:     $result=
  365:       &Apache::edit::tag_start($target,$token,'New Script Functions').
  366: 	&Apache::edit::editline($token->[1],$bodytext,'scriptlib',40).
  367:             &Apache::edit::browse_or_search(undef,'textnode').
  368: 	  $error.'</td></tr>'.
  369: 	    &Apache::edit::end_table();
  370:   }
  371:   if ($target eq "modified" ) {
  372:       $result=$token->[4].&Apache::edit::modifiedfield("/scriptlib",$parser);
  373:   }
  374:   return $result;
  375: }
  376: 
  377: sub end_scriptlib {
  378:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  379:   my @result;
  380:   if ($target eq "edit" ) { $result[1]='no'; }
  381:   return @result;
  382: }
  383: 
  384: sub start_parserlib {
  385:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  386:   my $bodytext;
  387:   my $result ="";
  388:   my $error='';
  389:   if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
  390:       $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
  391:       $target eq 'analyze' || $target eq 'webgrade') {
  392:     $bodytext=$$parser[$#$parser]->get_text("/parserlib");
  393:     $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
  394: 				     $$parstack[$#$parstack]);
  395:     my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
  396: 					       $bodytext);
  397:     my $styletext=&Apache::lonnet::getfile($location);
  398:     #&Apache::lonxml::debug("found :$bodytext: in :$location: with :$styletext:");
  399:     if ($styletext == -1) {
  400:       if ($target eq 'edit') {
  401: 	$error='</tr><tr><td>Errors</td><td colspan="2"><b> Unable to find <i>'.$location.'</i></b></td>'."\n";
  402:       } else {
  403: 	&Apache::lonxml::error("<b> Unable to find <i>$location</i> for parserlib</b>");
  404: 	return "";
  405:       }
  406:     }
  407:     %$style = ( %$style , &Apache::style::styleparser($target,$styletext));
  408:   }
  409:   if ($target eq "edit" ) {
  410:     $result=
  411:       &Apache::edit::tag_start($target,$token,'New Tag Definitions').
  412: 	&Apache::edit::editline($token->[1],$bodytext,'',40).
  413: 	  $error.'</td></tr>'.
  414: 	    &Apache::edit::end_table();
  415:   }
  416:   if ($target eq "modified" ) {
  417:       $result=$token->[4].&Apache::edit::modifiedfield("/parserlib",$parser);
  418:   }
  419:   return $result;
  420: }
  421: 
  422: sub end_parserlib {
  423:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  424:   my @result;
  425:   if ($target eq "edit" ) { $result[1]='no'; }
  426:   return @result;
  427: }
  428: 
  429: sub start_window {
  430:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  431:     my $result = '';
  432:     if ($target eq 'web' || $target eq 'webgrade') {
  433: 	&Apache::lonxml::startredirection;
  434:     } elsif ($target eq 'tex') {
  435:         my $printtext=&Apache::lonxml::get_param('printtext',$parstack,$safeeval);
  436:         if ($printtext=~/\w/) {
  437: # If printtext is given, do not output any intervening information
  438:            &Apache::lonxml::startredirection;
  439:         } else {
  440:            $result = '\unskip\footnote{';
  441:         }
  442:     } elsif ($target eq 'edit') {
  443: 	$result.=&Apache::edit::tag_start($target,$token);
  444: 	$result.=&Apache::edit::text_arg('Text of Link:','linktext',$token,70);
  445: 	$result.=&Apache::edit::text_arg('Height:','height',$token,5);
  446: 	$result.=&Apache::edit::text_arg('Width:','width',$token,5);
  447:         $result.=&Apache::edit::text_arg('Printed text (optional):','printtext',$token,20);
  448: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  449:     } elsif ($target eq 'modified') {
  450: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  451: 						     $safeeval,'linktext',
  452: 						     'width','height');
  453: 	if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
  454:     }
  455:     return $result;  
  456: }
  457: 
  458: sub end_window {
  459:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  460:   my $result;
  461:   if ($target eq 'web' || $target eq 'webgrade') {
  462:     my $output=&Apache::lonxml::endredirection;
  463:     my $linktext= &Apache::lonxml::get_param('linktext',$parstack,$safeeval);
  464:     if (!$linktext) { $linktext='<sup>*</sup>'; }
  465:     my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
  466:     if (!$width) { $width='500'; }
  467:     my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
  468:     if (!$height) { $height='200'; }
  469:     $result=&Apache::loncommon::modal_adhoc_window
  470:            ("LONCAPA_newwindow_$Apache::lonxml::curdepth",$width,$height,$output,$linktext);
  471:   } elsif ($target eq 'tex') {
  472:       my $printtext=&Apache::lonxml::get_param('printtext',$parstack,$safeeval);
  473:       if ($printtext=~/\w/) {
  474: # If a "printtext" is given, proceed to retrieve all intervening information and trash it
  475:          my $output=&Apache::lonxml::endredirection;
  476: # Use printtext instead
  477:          $result=$printtext;
  478:       } else {
  479:          $result='}';
  480:       }
  481:   } else {
  482:       $result = '';
  483:   }
  484:   return $result; 
  485: }
  486: 
  487: 
  488: sub start_windowlink {
  489:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  490:     my $result = '';
  491:     if ($target eq 'web' || $target eq 'webgrade') {
  492:         &Apache::lonxml::startredirection;
  493:     } elsif ($target eq 'edit') {
  494:         $result.=&Apache::edit::tag_start($target,$token);
  495:         $result.=&Apache::edit::text_arg('Link:','href',$token,70);
  496:         $result.=&Apache::edit::text_arg('Height:','height',$token,5);
  497:         $result.=&Apache::edit::text_arg('Width:','width',$token,5);
  498:         $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  499:     } elsif ($target eq 'modified') {
  500:         my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  501:                                                      $safeeval,'href',
  502:                                                      'width','height');
  503:         if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
  504:     }
  505:     return $result;
  506: }
  507: 
  508: sub end_windowlink {
  509:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  510:   my $result;
  511:   if ($target eq 'web' || $target eq 'webgrade') {
  512:     my $output=&Apache::lonxml::endredirection;
  513:     my $href= &Apache::lonxml::get_param('href',$parstack,$safeeval);
  514:     if (!$href) { $href='/adm/rat/empty.html'; }
  515:     my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
  516:     if (!$width) { $width='500'; }
  517:     my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
  518:     if (!$height) { $height='200'; }
  519:     $result=&Apache::loncommon::modal_link($href,$output,$width,$height);
  520:   } else {
  521:       $result = '';
  522:   }
  523:   return $result;
  524: }
  525: 
  526: 
  527: sub start_togglebox {
  528:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  529:     my $result = '';
  530:     if ($target eq 'web' || $target eq 'webgrade') {
  531:         my $id="LONCAPA_togglebox_$Apache::lonxml::curdepth";
  532:         my $heading=&Apache::lonxml::get_param('heading',$parstack,$safeeval);
  533:         unless ($heading) { $heading=''; } else { $heading.=' '; }
  534:         my $showtext=&Apache::lonxml::get_param('showtext',$parstack,$safeeval);
  535:         my $hidetext=&Apache::lonxml::get_param('hidetext',$parstack,$safeeval);
  536:         my $headerbg=&Apache::lonxml::get_param('headerbg',$parstack,$safeeval);
  537:         $result=&Apache::loncommon::start_togglebox($id,$heading,$headerbg,$hidetext,$showtext);
  538:     } elsif ($target eq 'tex') {
  539:         my $heading=&Apache::lonxml::get_param('heading',$parstack,$safeeval);
  540:         unless ($heading) { $heading=''; } else { $heading.=' '; }
  541:         $result = "\n\n".'\fbox{{\bf '.$heading.'} \qquad '."\n";
  542:     } elsif ($target eq 'edit') {
  543:         $result.=&Apache::edit::tag_start($target,$token);
  544:         $result.=&Apache::edit::text_arg('Heading:','heading',$token,70);
  545:         $result.=&Apache::edit::text_arg('Header Background:','headerbg',$token,7);
  546:         $result.=&Apache::edit::text_arg('Show text:','showtext',$token,10);
  547:         $result.=&Apache::edit::text_arg('Hide text:','hidetext',$token,10);
  548:         $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  549:     } elsif ($target eq 'modified') {
  550:         my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  551:                                                      $safeeval,'heading',
  552:                                                      'showtext','hidetext',
  553:                                                      'headerbg','textbg');
  554:         if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
  555:     }
  556:     return $result;
  557: }
  558: 
  559: sub end_togglebox {
  560:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  561:   my $result;
  562:   if ($target eq 'web' || $target eq 'webgrade') {
  563:     $result=&Apache::loncommon::end_togglebox();
  564:   } elsif ($target eq 'tex') {
  565:       $result = "}\n\n";
  566:   } else {
  567:       $result = '';
  568:   }
  569:   return $result;
  570: }
  571: 
  572: 
  573: 
  574: sub start_import {
  575:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  576:   my $bodytext=$$parser[$#$parser]->get_text("/import");
  577:   my $result ="";
  578: 
  579:   $bodytext=&Apache::run::evaluate($bodytext,$safeeval,$$parstack[$#$parstack]);
  580: 
  581:   if ($target eq 'web' ||  $target eq 'webgrade' || $target eq 'grade' 
  582:       || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze' ) {
  583:     # FIXME this probably needs to be smart about construction vs.
  584:     # non construction space.
  585:     my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
  586:     my $file=&Apache::lonnet::getfile($location);
  587:     if ($file == -1) {
  588:       &Apache::lonxml::error("<b> Unable to find <i>$bodytext as $location</i> for import</b>");
  589:       return "";
  590:     }
  591:     my $importmode=&Apache::lonxml::get_param('importmode',$parstack,$safeeval);
  592:     if (($importmode eq 'problem') || ($importmode eq 'part')) {
  593: # We are using import to import published problems
  594:        if (($importmode eq 'problem') || ($file=~/<part[^<]*>/s)) {
  595: # We explicitly don't want this to be a separate part or the problem already has parts
  596:           $file=~s/^\s*<problem>/<library>/s;
  597: 	  $file=~s/<\/problem>\s*$/<\/library>/s;
  598:        } else {
  599: # We want this to be a separate part, but it currently is not
  600:           $file=~s/^\s*<problem>/<library><part>/s;
  601: 	  $file=~s/<\/problem>\s*$/<\/part><\/library>/s;
  602:        }
  603:     }
  604:     my $dir=$location;
  605:     $dir=~s:/[^/]*$::;
  606:     #  &Apache::lonxml::debug("directory $dir $location file $file \n<b>END</b>\n");
  607:     my $id= &Apache::lonxml::get_id($parstack,$safeeval);
  608:     if (!$id) { $id=$Apache::lonxml::curdepth; }
  609:     push(@Apache::inputtags::import,$id);
  610:     push(@Apache::inputtags::importlist,$id);
  611: 
  612:     &Apache::lonxml::newparser($parser,\$file,$dir);
  613: 
  614:   } elsif ($target eq "edit" ) {
  615:     $result.=&Apache::edit::tag_start($target,$token);
  616:     my $location=$token->[1];
  617:     $location=~s/^\s*//s;
  618:     $location=~s/\s*$//s;
  619:     my $crsonly = join(',',(&Apache::loncommon::filecategorytypes('Problem'),
  620:                             &Apache::loncommon::filecategorytypes('Library')));
  621:     $result.=&Apache::edit::editline($location,$bodytext,'',40);
  622:     $result.=&Apache::edit::browse_or_search(undef,'textnode',undef,undef,$crsonly);
  623:     $result.= '&nbsp;<span class="LC_nobreak"><label>'.&mt('Import as:').
  624:               '<select name="importmode_'.$Apache::lonxml::curdepth.'">';
  625:     my %options=&Apache::lonlocal::texthash(''        => 'as standard library',
  626:                                             'problem' => 'as problem',
  627:                                             'part'    => 'as problem part(s)');
  628:     foreach my $option (sort(keys(%options))) {
  629:        $result.='<option value="'.$option.'"';
  630:        if ($option eq &Apache::lonxml::get_param('importmode',$parstack,$safeeval)) {
  631:           $result.=' selected="selected"';
  632:        }
  633:        $result.='>'.$options{$option}.'</option>';
  634:     }
  635:     $result.='</select></label></span>';
  636:     #FIXME this need to convert $bodytext to be a contruction space reference
  637:     #my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
  638:     #$result.="Click<a href=\"$location\">here</a> to edit<br />"
  639:   } elsif ($target eq 'modified') {
  640:       &Apache::edit::get_new_args($token,$parstack,$safeeval,'importmode');
  641:       $result='<import id="'.$token->[2]{'id'}.'" importmode="'.$token->[2]{'importmode'}.'">';
  642:       $result.=&Apache::edit::modifiedfield("/import",$parser);
  643:   } elsif ($target eq 'meta') {
  644:     my $id= &Apache::lonxml::get_id($parstack,$safeeval);
  645:     $result.='<import part="'.$Apache::inputtags::part;
  646:     if ($id) {
  647:       $result.='" id="'.$id;
  648:     }
  649:     $result.='" importmode="'.$token->[2]{'importmode'}.'">';
  650:     $result.=$bodytext;
  651:     $result.='</import>';
  652:   }
  653:   return $result;
  654: }
  655: 
  656: sub end_import {
  657:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  658:   pop(@Apache::inputtags::import);
  659:   my $result;
  660:   if ($target eq 'edit' ) { $result=&Apache::edit::end_row.
  661: 				&Apache::edit::end_table(); }
  662:   return $result;
  663: }
  664: 
  665: sub start_storetc {
  666:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  667:   my $result = '';
  668:   &Apache::lonxml::startredirection;
  669:   return $result; 
  670: }
  671: 
  672: sub end_storetc {
  673:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  674:     my $result;
  675:     my $output=&Apache::lonxml::endredirection;
  676:     $output =~ s/\"/\&quot\;/g;
  677:     $result = '{\bf '.$output.'.}}\write\tcfile{\protect\tcpc{ '.$output.'.}{\the\value{relpage}}}';
  678:     return $result;
  679: }
  680: 
  681: 
  682: sub start_physnet {
  683:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  684:     my $bodytext = '/res/adm/includes/physnet.sty';
  685:     my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
  686:     my $cbistyletext=&Apache::lonnet::getfile($location);
  687: 
  688:     %$style = (%$style,&Apache::style::styleparser($target,$cbistyletext));
  689:     if (keys(%$style) && (($target eq 'web') || ($target eq 'tex'))) {
  690:         $$parser['-1']->unget_token($token);
  691:     }
  692: #    if ( defined($$style{'physnet'}) ) {
  693: #        &Apache::lonxml::newparser($parser,\$$style{'physnet'});
  694: #    }
  695:     return "";
  696: }
  697: 
  698: sub end_physnet {
  699:   return '';
  700: }
  701: 
  702: sub start_standalone {
  703:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  704:   my $result='';
  705:   if ($target eq 'web' || $target eq 'webgrade') {
  706:     if ( $env{'request.course.id'} ) {
  707:       my $inside = &Apache::lonxml::get_all_text("/standalone",$parser,$style);
  708:     } else {
  709:       $result='<table bgcolor="#E1E1E1" border="2"><tr><td>';
  710:     }
  711:   }
  712:   return $result;
  713: }
  714: 
  715: sub end_standalone {
  716:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  717:   my $result='';
  718:   if ($target eq 'web' || $target eq 'webgrade' ) {
  719:     if ( $env{'request.course.id'} ) {
  720:     } else {
  721:       $result='</td></tr></table>';
  722:     }
  723:   }
  724:   return $result;
  725: }
  726: 
  727: sub start_comment {
  728:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  729:   my $result='';
  730:   if ($target eq 'edit') {
  731:     $result=&Apache::edit::tag_start($target,$token);
  732:     my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser,$style);
  733:     $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4)
  734:   } elsif ( $target eq 'modified') {
  735:     $result=$token->[4].&Apache::edit::modifiedfield("/comment",$parser);
  736:   } elsif ( $target eq 'web'    || $target eq 'tex'  || $target eq 'grade'   ||
  737: 	    $target eq 'answer' || $target eq 'meta' || $target eq 'analyze' ||
  738: 	    $target eq 'webgrade') {
  739:     #normally throw away comments
  740:     my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser,$style);
  741:   }
  742:   return $result;
  743: }
  744: 
  745: sub end_comment {
  746:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  747:   if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
  748:   return '';
  749: }
  750: 
  751: 
  752: sub xmlparse {
  753:   my ($string) = @_;
  754:   &Apache::lonxml::debug("xmlparse recursion starting with $string");
  755:   # Apache::run::evaluate does an 'eval' on the name of the subroutine
  756:   # if it detects something that looks like a subroutine, this ends up calling
  757:   # things without any arguments and since perl is nice enough to pass
  758:   # along the default arguments when you don't explicitly say no arguments
  759:   # if you call &xmlparse, it gets &xmlparse passed as it argument.
  760:   # Same thing soccurs with &chemparse.
  761:   if ($string eq '&xmlparse') { return '&xmlparse'; }
  762:   if ($string eq '&chemparse') { return '&chemparse'; }
  763:   my ($target,$token,$tagstack,$parstack,$oldparser,$safeeval,$style)=
  764:     @Apache::scripttag::parser_env;
  765:   my @parser;
  766:   &Apache::lonxml::newparser(\@parser,\$string);
  767:   &Apache::lonxml::startredirection();
  768:   my $result=&Apache::lonxml::inner_xmlparse($target,$tagstack,
  769: 					     $parstack,\@parser,
  770: 					     $safeeval,$style);
  771:   $result.=&Apache::lonxml::endredirection();
  772:   &Apache::lonxml::debug("target is $target xmlparse recursion ending with $result");
  773:   return $result;
  774: }
  775: 
  776: sub start_num {
  777:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
  778:     my $result = '';
  779:     my $inside = &Apache::lonxml::get_all_text_unbalanced("/num",$parser);
  780:     if ($target eq 'tex' || $target eq 'web' || $target eq 'webgrade') {
  781: 	$inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
  782: 	if (!$Apache::lonxml::default_homework_loaded) {
  783: 	    &Apache::lonxml::default_homework_load($safeeval);
  784: 	}
  785: 	@Apache::scripttag::parser_env = @_;
  786: 	my $format=&Apache::lonxml::get_param('format',$parstack,$safeeval);
  787: 	$result=&Apache::run::run("return &prettyprint(q\0$inside\0,q\0$format\0);",$safeeval);
  788:     }    
  789:     return $result;
  790: }
  791: 
  792: sub end_num {
  793:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
  794:     my $result = '';
  795:     return $result;
  796: }
  797: 
  798: sub start_parse {
  799:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
  800:     my $result = '';
  801:     if ( $target eq 'web'    || $target eq 'tex'    ||
  802: 	 $target eq 'grade'  || $target eq 'answer' ||
  803: 	 $target eq 'analyze'|| $target eq 'webgrade') {
  804: 	my $inside = &Apache::lonxml::get_all_text_unbalanced("/parse",$parser);
  805: 	$inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
  806: 	if (!$Apache::lonxml::default_homework_loaded) {
  807: 	    &Apache::lonxml::default_homework_load($safeeval);
  808: 	}
  809: 	@Apache::scripttag::parser_env = @_;
  810: 	$result=&Apache::run::run("return &xmlparse(q\0$inside\0);",$safeeval);
  811: 	if ($target eq 'grade' || $target eq 'answer' ||
  812: 	    $target eq 'analyze') {
  813: 	    # grade/answer/analyxe should produce no output but if we
  814: 	    # are redirecting, the redirecter should know what to do
  815: 	    # with the output
  816: 	    if (!$Apache::lonxml::redirection) { $result=''; }
  817: 	}
  818:     }
  819:     return $result;
  820: }
  821: 
  822: sub end_parse {
  823:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
  824:     my $result = '';
  825:     return $result;
  826: }
  827: 
  828: sub start_algebra {
  829:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
  830:     my $result = '';
  831:     if ( $target eq 'web'     || $target eq 'tex'    ||
  832: 	 $target eq 'grade'   || $target eq 'answer' ||
  833: 	 $target eq 'analyze' || $target eq 'webgrade') {
  834: 	my $inside = &Apache::lonxml::get_all_text_unbalanced("/algebra",$parser);
  835: 	$inside = &Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
  836: 	if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
  837: 	    my $style=&Apache::lonxml::get_param('style',$parstack,$safeeval);
  838: 	    $result=&Apache::lontexconvert::algebra($inside,$target,$style,$parstack,$safeeval);
  839: 	}
  840: 	$Apache::lonxml::post_evaluate=0;
  841:     }
  842:     return $result;
  843: }
  844: 
  845: sub end_algebra {
  846:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
  847:     my $result = '';
  848:     return $result;
  849: }
  850: 
  851: 1;
  852: __END__
  853: 
  854: =pod
  855: 
  856: =head1 NAME
  857: 
  858: Apache::scripttag.pm
  859: 
  860: =head1 SYNOPSIS
  861: 
  862: implements <script>, <scriptlib>, <parserlib>,
  863: and <import>
  864: 
  865: This is part of the LearningOnline Network with CAPA project
  866: described at http://www.lon-capa.org.
  867: 
  868: =cut
  869: 

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