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- Check that $navmap object was available.
  - Advise course re-initialization, if not.

    1: # The LearningOnline Network
    2: # Simple Problem Parameter Setting "Editor"
    3: #
    4: # $Id: lonsimpleproblemedit.pm,v 1.20 2009/02/01 20:40:28 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::lonsimpleproblemedit;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common :http);
   33: use Apache::loncommon;
   34: use Apache::lonnet;
   35: use Apache::lonlocal;
   36: use Apache::lonnavmaps;
   37: use lib '/home/httpd/lib/perl/';
   38: use LONCAPA;
   39:  
   40: 
   41: my %qparms;
   42: my $prefix;
   43: my $qtype;
   44: 
   45: sub evaloptionhash {
   46:     my $options=shift;
   47:     $options=~s/^\(\'//;
   48:     $options=~s/\'\)$//;
   49:     my %returnhash=();
   50:     foreach (split(/\'\,\'/,$options)) {
   51: 	$returnhash{$_}=$_;
   52:     }
   53:     return %returnhash;
   54: }
   55: 
   56: sub rawrendering {
   57:     my ($symb)=@_;
   58:     my %data=('show_errors'=>'on',
   59: 	      'simple_edit_button' => 'off',
   60: 	      'devalidatecourseresdata'=>'on');
   61:     return &Apache::loncommon::get_student_view($symb,time,time,
   62: 						$env{'request.course.id'},
   63: 						'web',\%data);
   64: }
   65: 
   66: sub questiontext {
   67:     my $text=$qparms{$prefix.'questiontext'};
   68:     my $qt=&mt('Question Text');
   69:     my $spell_link=
   70: 	&Apache::lonhtmlcommon::spelllink('simpleedit','questiontext');
   71:     return (<<ENDQUESTION);
   72: <table bgcolor="#dddd22" cellspacing="4" cellpadding="2" style="width:100%">
   73: <tr><td><b>$qt</b><br />
   74: <textarea style="width:100%" name="questiontext" cols="80" rows="8">$text</textarea>
   75: <br />$spell_link
   76: </td></tr>
   77: </table>
   78: <br />
   79: ENDQUESTION
   80: }
   81: 
   82: sub hint {
   83:     my $text=$qparms{$prefix.'hinttext'};
   84:     my $ht=&mt('Hint Text');
   85:     my $spell_link=
   86: 	&Apache::lonhtmlcommon::spelllink('simpleedit','hinttext');
   87:     return (<<ENDHINT);
   88: <table bgcolor="#accacc" cellspacing="4" cellpadding="2">
   89: <tr><td><b>$ht</b><br />
   90: <textarea style="width:100%" name="hinttext" cols="80" rows="4">$text</textarea>
   91: <br />$spell_link
   92: </td></tr>
   93: </table>
   94: <br />
   95: ENDHINT
   96: }
   97: 
   98: sub foil {
   99:     my $number=shift;
  100:     my %values='';
  101:     if ($qtype eq 'radio') {
  102: 	%values=('true' => 'True', 'false' => 'False');
  103:     } elsif ($qtype eq 'option') {
  104: 	%values=&evaloptionhash($qparms{$prefix.'options'});
  105:     }
  106:     $values{'unused'}='Not shown, not used';
  107:     my $value=$qparms{$prefix.'value'.$number};
  108:     unless (defined($value)) { $value='unused'; }
  109:     unless ($values{$value}) { $value='unused'; }
  110:     my $position=$qparms{$prefix.'position'.$number};
  111:     my %positions=('random' => 'Random position',
  112: 		   'top'    => 'Show always at top position',
  113: 		   'bottom' => 'Show always at bottom position');
  114:     unless (defined($position)) { $position='random'; }
  115:     unless ($positions{$position}) {
  116: 	$position='random';
  117:     }
  118:     my $selectvalue=&Apache::loncommon::select_form
  119: 	                                ($value,'value'.$number,%values);
  120:     my $selectposition=&Apache::loncommon::select_form
  121:                                ($position,'position'.$number,%positions);
  122:     my $text=$qparms{$prefix.'text'.$number};
  123:     my %lt=&Apache::lonlocal::texthash('foil'  => 'Foil',
  124: 				       'value' => 'Value',
  125: 				       'pos'   => 'Position',
  126: 				       'text'  => 'Text');
  127: 
  128:     my $spell_link=
  129: 	&Apache::lonhtmlcommon::spelllink('simpleedit',"text$number");
  130:     return (<<ENDFOIL);
  131: <table bgcolor="#dd55ff" cellspacing="4" cellpadding="2">
  132: <tr><td colspan="2"><b>$lt{'foil'}</b></td></tr>
  133: <tr><td>$lt{'value'}: $selectvalue</td><td>$lt{'pos'}: $selectposition</td></tr>
  134: <tr><td colspan="2">$lt{'text'}:<br />
  135: <textarea style="width:100%" name="text$number" cols="80" rows="4">$text</textarea>
  136: <br />$spell_link
  137: </td></tr>
  138: </table>
  139: <br />
  140: ENDFOIL
  141: }
  142: 
  143: sub get_parent_uri {
  144:     my ($cur_symb)=@_;
  145:     my $navmap = Apache::lonnavmaps::navmap->new();
  146:     if (defined($navmap)) {
  147:         my $it = $navmap->getIterator(undef, undef, undef, 1);
  148:         while ( my $res=$it->next()) {
  149: 	    if (ref($res) &&  $res->symb() eq  $cur_symb) { last; }
  150:         }
  151:         my ($src,$symb,$anchor)=&Apache::lonnavmaps::getLinkForResource($it->getStack());
  152:         if (defined($anchor)) { $anchor='#'.$anchor; }
  153:         return $src.'?symb='.&escape($symb).$anchor;
  154:     }
  155:     return;
  156: }
  157: 
  158: sub handler {
  159:     my $r = shift;
  160: 
  161:     if ($r->header_only) {
  162:         &Apache::loncommon::content_type($r,'text/html');
  163:         $r->send_http_header;
  164:         return OK;
  165:     }
  166: 
  167: # -------------------------------------------------------------------- Allowed?
  168:     unless (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
  169: 	return HTTP_NOT_ACCEPTABLE; 
  170:     }
  171: # ----------------------------------------------------------------- Send header
  172:     &Apache::loncommon::content_type($r,'text/html');
  173:     $r->send_http_header;
  174: # ----------------------------------------------------- Figure out where we are
  175:     my $uri=$r->uri;
  176:     $uri=~s/\/smpedit$//;
  177:     my $symb=&Apache::lonnet::symbread();
  178: 
  179: # ------------------------------------------------ Prefix for everything stored
  180:     $prefix=$env{'request.course.id'}.'.'.$symb.'.0.';
  181: # ---------------------------------------------------------- Anything to store?
  182: 
  183:     if (($symb) && (defined($env{'form.questiontype'}))) {
  184:         my %storecontent=();
  185:         undef %storecontent;
  186:         if ($env{'form.questiontype'} eq 'option') {
  187: 	    my %curoptions=&evaloptionhash($env{'form.options'});
  188: 	    if ($env{'form.delopt'}) {
  189: 		delete $curoptions{$env{'form.delopt'}};
  190: 	    }
  191: 	    if ($env{'form.newopt'}) {
  192: 		$env{'form.newopt'}=~s/\'/\\\'/g;
  193:                 $curoptions{$env{'form.newopt'}}=$env{'form.newopt'};
  194: 	    }
  195:             $env{'form.options'}="('".join("','",keys %curoptions)."')";
  196: 	}
  197: 	$env{'form.hiddenparts'}='!'.$env{'form.questiontype'};
  198:         foreach (keys %env) {
  199: 	    if ($_=~/^form\.(\w+)$/) {
  200:                 my $parm=$1;
  201: 		$storecontent{$prefix.$parm}=$env{'form.'.$parm};
  202:                 $storecontent{$prefix.$parm}=~s/^\s+//s;
  203: 		$storecontent{$prefix.$parm}=~s/\s+$//s;
  204: 	    }
  205: 	}
  206: 	my $reply=&Apache::lonnet::cput
  207: 	    ('resourcedata',\%storecontent,
  208: 	     $env{'course.'.$env{'request.course.id'}.'.domain'},
  209: 	     $env{'course.'.$env{'request.course.id'}.'.num'});
  210: 
  211:     }
  212: # ------------------------------------------------------------------- Read Data
  213: 
  214:     %qparms=&Apache::lonnet::dump('resourcedata',
  215: 		     $env{'course.'.$env{'request.course.id'}.'.domain'},
  216: 		     $env{'course.'.$env{'request.course.id'}.'.num'},
  217: 		     $env{'request.course.id'}.'.'.$symb);
  218: 
  219: # ------------------------------------------------------------ Print the screen
  220:     my $spell_header=&Apache::lonhtmlcommon::spellheader();
  221:     $r->print(&Apache::loncommon::start_page('Simple Problem Editor',
  222: 					     $spell_header));
  223:     if ($symb) {
  224: 	$r->print('<h1>'.&Apache::lonnet::gettitle($symb).'</h1>');
  225: 	$r->print('<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>');
  226:         my $displaylink = &get_parent_uri($symb);
  227:         if ($displaylink ne '') {      
  228:             $r->print('<a href="'.$displaylink.'">'.&mt('Student View').'</a> - ');
  229:         } else {
  230:             $r->print('<span class="LC_error">'.&mt('An error occurred retrieving the link to this problem').'<br />'.&mt('You may need to [_1]re-select the course[_2] and then return to this resource to view it.','<a href="/adm/roles">','</a>').'</span><br />'); 
  231:         }
  232:         $r->print(&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
  233: 		  &Apache::loncommon::help_open_topic('Caching').'</td></tr></table>');
  234: 	$r->print('<table border="2" bgcolor="#FFFFFF" width="100%"><tr><td>'.
  235:                   &rawrendering($symb).
  236:                   '</td></tr></table><br />');
  237:         $r->print('<form name="simpleedit" method="POST">');
  238: # Question Type        
  239: 	my %questiontypes=('radio'  => 
  240:                                '1 out of N multiple choice (radio button)',
  241: 			   'option' => 'Option response',
  242:                            'string' => 'Short string response',
  243:                            'essay'  => 'Essay, open end');
  244:         $qtype=$qparms{$prefix.'questiontype'};
  245:         unless (defined($qtype)) { $qtype='radio'; }
  246:         unless ($questiontypes{$qtype}) { $qtype='radio'; }
  247:         $r->print('<b>'.&mt('Question Type').
  248: 		  ': '.&Apache::loncommon::select_form
  249: 	                               ($qtype,'questiontype',%questiontypes).
  250:   '</b><br /><input type="submit" value="'.&mt('Save and Edit').
  251:   '" /><p>&nbsp;</p>');
  252: # Question Text
  253:         $r->print(&questiontext());
  254: # Radio, Option ===
  255: 	if (($qtype eq 'radio') || ($qtype eq 'option')) {
  256: # Response
  257:             my $maxfoils=$qparms{$prefix.'maxfoils'};
  258:             unless (defined($maxfoils)) { $maxfoils=10; }
  259:             unless ($maxfoils=~/^\d+$/) { $maxfoils=10; }
  260:             if ($maxfoils<=0) { $maxfoils=10; }
  261: 	    my %randomizes=('yes' => 'Display foils in random order',
  262: 			    'no'  => 'Display foils in order given');
  263: 	    my $randomize=$qparms{$prefix.'randomize'};
  264:             unless (defined($randomize)) { $randomize='yes'; }
  265:             unless ($randomizes{$randomize}) { $randomize='yes'; }
  266: 	    $r->print(
  267: 		  '<table bgcolor="#00ee44" cellspacing="4" cellpadding="2">'.
  268: 	          '<tr><td>'.&mt('Max number of foils displayed').
  269: ': <input type="text" size="3" name="maxfoils" value="'.$maxfoils.'" />&nbsp;&nbsp;'.
  270: 		      &Apache::loncommon::select_form
  271: 		      ($randomize,'randomize',%randomizes).
  272: 		  '</td></tr><tr><td bgcolor="#AAAAAA">');
  273: # Option Response: Options
  274: 	    if ($qtype eq 'option') {
  275: 		my $options=$qparms{$prefix.'options'};
  276:                 unless (defined($options)) { $options="('true','false')"; }
  277:                 my %optionshash=&evaloptionhash($options);
  278: 		$r->print(
  279: 		  '<table bgcolor="#ffcc22" cellspacing="4" cellpadding="2">'.
  280: 		  '<tr><td><input type="hidden" name="options" value="'.
  281:                   $options.'" />'.&mt('Add new option').': '.
  282:           '<input type="text" name="newopt" size="15" />'.
  283:           &mt('Delete an option').': '.
  284:           &Apache::loncommon::select_form('','delopt',('' => '',%optionshash)).
  285:           '</td></tr><tr><td>');
  286: 	    }
  287: # Foils
  288: 	    for (my $i=1;$i<=10;$i++) {
  289: 		$r->print(&foil($i));
  290: 	    }
  291: # End Options
  292: 	    if ($qtype eq 'option') {
  293: 		$r->print('</td></tr></table>');
  294: 	    }
  295: 
  296: # End Response
  297: 	    $r->print('</td></tr></table><br />');
  298: # Hint
  299: 	    $r->print(&hint());
  300: 	}
  301: 	if ($qtype eq 'string') {
  302:             my %stringtypes=(
  303: 	       'cs' => 'Case sensitive',
  304: 	       'ci' => 'Case Insensitive',
  305: 	       'mc' => 'Multiple Choice, Order of characters unchecked');
  306:             my $stringanswer=$qparms{$prefix.'stringanswer'};
  307:             unless (defined($stringanswer)) { $stringanswer=''; }
  308:             my $stringtype=$qparms{$prefix.'stringtype'};
  309:             unless (defined($stringtype)) { $stringtype='cs'; }
  310:             unless ($stringtypes{$stringtype}) { $stringtype='cs'; }
  311: 	    $r->print(
  312: 		  '<table bgcolor="#00ee44" cellspacing="4" cellpadding="2">'.
  313: 	          '<tr><td>'.&mt('Correct answer').': <input type="text" size="20" name="stringanswer" value="'.$stringanswer.'" />&nbsp;&nbsp;'.
  314: 		      &Apache::loncommon::select_form
  315: 		      ($stringtype,'stringtype',%stringtypes).
  316: 		  '</td></tr></table><br />');
  317: # Hint
  318: 	    $r->print(&hint());
  319: 	}
  320: # Store Button
  321: 	$r->print(
  322:   '<input type="submit" value="'.&mt('Save and Edit').'" /></form>');
  323:     } else {
  324: 	$r->print(&mt('Could not identify problem.'));
  325:     }
  326:     $r->print(&Apache::loncommon::end_page());
  327:     return OK;
  328: } 
  329: 
  330: 1;
  331: __END__