Annotation of loncom/homework/randomlabel.pm, revision 1.43

1.1       tsai        1: # The LearningOnline Network with CAPA
                      2: # random labelling tool
1.8       albertel    3: #
1.43    ! albertel    4: # $Id: randomlabel.pm,v 1.42 2003/01/23 18:26:10 www Exp $
1.8       albertel    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: #
1.3       tsai       28: # 7/20/2001 Isaac Tsai, initial syntax
                     29: # 8/10/2001 Isaac Tsai, 
                     30: # 8/30/2001 Isaac Tsai, 
1.1       tsai       31: # SYNTAX:
1.4       albertel   32: # <randomlabel bgimg="URL" width="12" height="45" texwidth="50">
                     33: #    <labelgroup name="GroupOne" type="image">
                     34: #      <location x="123" y="456" />
                     35: #      <location x="321" y="654" />
                     36: #      <location x="213" y="546" />
                     37: #      <label description="TEXT-1">IMG-URL</label>
                     38: #      <label description="TEXT-2">IMG-URL</label>
                     39: #      <label description="TEXT-3">IMG-URL</label>
1.1       tsai       40: #    </labelgroup>
1.4       albertel   41: #    <labelgroup name="GroupTwo" type="text">
                     42: #      <location x="12" y="45" />
                     43: #      <location x="32" y="65" />
                     44: #      <location x="21" y="54" />
1.3       tsai       45: #      <label>TEXT-1</label>
                     46: #      <label>TEXT-2</label>
                     47: #      <label>TEXT-3</label>
1.1       tsai       48: #    </labelgroup>
                     49: #   </randomlabel>
                     50: #  ===========================================
1.3       tsai       51: #  side effect:
                     52: #    location (123,456): $GroupOne[0] = 2  # images give out indexes
                     53: #             (321,654): $GroupOne[1] = 1
                     54: #             (213,546): $GroupOne[2] = 0
                     55: #    location (12,45)  : $GroupTwo[0] = "TEXT-3"
                     56: #             (32,65)  : $GroupTwo[1] = "TEXT-1"
                     57: #             (21,54)  : $GroupTwo[2] = "TEXT-2"
1.1       tsai       58: #  ===========================================
                     59: package Apache::randomlabel;
1.24      sakharuk   60: use Apache::lonnet;
1.1       tsai       61: use strict;
1.13      sakharuk   62: use Apache::edit;
1.36      sakharuk   63: use Apache::File();
1.38      sakharuk   64: use Apache::Constants qw(:common :http);
1.1       tsai       65: 
1.13      sakharuk   66: BEGIN {
1.1       tsai       67:   &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
                     68: }
                     69: 
1.23      matthew    70: sub check_int {
                     71:     # utility function to do error checking on a integer.
                     72:     my ($num,$default) = @_;
                     73:     $default = 100 if (! defined($default));
                     74:     $num =~ s/\s+//g;  # We dont need no stinkin white space!
                     75:     # If it is a real, just grab the integer part.
                     76:     ($num,undef) = split (/\./,$num) if ($num =~ /\./); 
                     77:     # set to default if what we have left doesn't match anything...
                     78:     $num = $default unless ($num =~/^\d+$/);
                     79:     return $num;
                     80: }
                     81: 
1.1       tsai       82: sub start_randomlabel {
                     83:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                     84:   my $result='';
1.20      albertel   85:   push (@Apache::lonxml::namespace,'randomlabel');
1.1       tsai       86:   my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
1.6       albertel   87:   if ( $bgimg !~ /^http:/ ) {
                     88:     $bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg);
1.42      www        89:     if (&Apache::lonnet::repcopy($bgimg) ne OK) {
                     90: 	$bgimg='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
                     91:     }
1.6       albertel   92:   }
1.23      matthew    93:   my $w= &check_int(&Apache::lonxml::get_param('width',$parstack,$safeeval));
                     94:   my $h= &check_int(&Apache::lonxml::get_param('height',$parstack,$safeeval));
1.4       albertel   95:   my $texwidth= &Apache::lonxml::get_param('texwidth',$parstack,$safeeval);
1.3       tsai       96:   $Apache::randomlabel::tlabel_cnt=0;
                     97:   $Apache::randomlabel::ilabel_cnt=0;
                     98:   if ($target eq 'web') {
1.40      albertel   99:       &Apache::lonxml::startredirection();
                    100:       $result.="BGIMG=".&Apache::lonnet::escape($bgimg);
1.4       albertel  101:   } elsif ($target eq 'tex') {
1.36      sakharuk  102:     my $newbgimg = $bgimg;
1.42      www       103:     $bgimg=~s/\.(gif|jpg|png|jpeg)$/\.eps/i;
1.24      sakharuk  104:     $bgimg= &Apache::lonnet::filelocation($bgimg);
1.31      sakharuk  105:     if (not $ENV{'request.role'}=~/^au\./) {
                    106: 	$bgimg=~s/http:\/[^\/]*/\/home\/httpd\/html/;
1.35      sakharuk  107: 	$bgimg=~s/\/$//;
1.36      sakharuk  108:         #if no eps file try to replicate it
1.35      sakharuk  109: 	if (not-e $bgimg) {
1.38      sakharuk  110: 	    if (&Apache::lonnet::repcopy($bgimg) ne OK ) {
                    111: 		#if replication failed try to find ps file
1.36      sakharuk  112: 		$bgimg=~s/\.eps$/\.ps/;
                    113: 		#if no ps file try to replicate it
1.38      sakharuk  114: 		if (not-e $bgimg &&
                    115: 		    &Apache::lonnet::repcopy($bgimg) ne OK) {
                    116:                     #if replication failed try to produce eps file dynamically
1.36      sakharuk  117: 		    $bgimg=~s/\.ps$/\.eps/;
                    118: 		    my $temp_file;
                    119: 		    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
                    120: 		    $temp_file = Apache::File->new('>>'.$filename);
                    121: 		    $newbgimg =~ s/(.*)\/res\//\/home\/httpd\/html\/res\//;
                    122: 		    print $temp_file "$newbgimg\n";
                    123: 		    $bgimg =~ m/\/([^\/]+)$/;
                    124: 		    $bgimg = '/home/httpd/prtspool/'.$1;
                    125: 		}
                    126: 	    }
1.35      sakharuk  127: 	}
1.31      sakharuk  128:     } else {
                    129: 	$bgimg=~s/http:\/[^\/]*\/~([^\/]+)/\/home\/$1\/public_html/;
                    130:     }
1.24      sakharuk  131:     $bgimg=~s/\/$//;
1.34      sakharuk  132:     my $dirtywidth=$texwidth+5;
1.31      sakharuk  133:     if ($texwidth==90) {
1.34      sakharuk  134: 	$result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{  \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
                    135: 	    $bgimg.'}\setlength{\unitlength}{1mm}  \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
1.31      sakharuk  136:     } else {
1.34      sakharuk  137: 	$result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{  \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
                    138: 	    $bgimg.'}\setlength{\unitlength}{1mm}  \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
1.31      sakharuk  139:     }
1.3       tsai      140:   } elsif ($target eq 'edit') {
1.4       albertel  141:     $result.=&Apache::edit::tag_start($target,$token);
1.18      matthew   142:     $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' ';
                    143:     $result.=&Apache::edit::browse('bgimg').' ';
                    144:     $result.=&Apache::edit::search('bgimg').'<br />'.
1.15      matthew   145:         &Apache::edit::text_arg('Width(pixel):' ,'width'   ,$token,6).
                    146:         &Apache::edit::text_arg('Height(pixel):','height'  ,$token,6).
                    147:         &Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6).
                    148:         &Apache::edit::end_row().&Apache::edit::start_spanning_row();     
1.3       tsai      149:   } elsif ($target eq 'modified') {
1.4       albertel  150:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    151: 						 'bgimg','width','height',
                    152: 						 'texwidth');
                    153:     if ($constructtag) {
                    154:       $result = &Apache::edit::rebuild_tag($token);
                    155:       $result.=&Apache::edit::handle_insert();
                    156:     }
1.1       tsai      157:   }
                    158:   return $result;
                    159: }
                    160: 
                    161: sub end_randomlabel {
1.3       tsai      162:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    163:   my $result='';
                    164:   my $count;
1.21      albertel  165:   pop @Apache::lonxml::namespace;
1.3       tsai      166:   if ($target eq 'web') {
1.40      albertel  167:       my $args=&Apache::lonxml::endredirection();
                    168:       $args=~s/\s*&/&/g;
                    169:       $args=~s/\s*$//;
                    170:       $count = $Apache::randomlabel::tlabel_cnt;
                    171:       if( $count != 0) { $args.= "&COUNT=$count"; }
                    172:       $count = $Apache::randomlabel::ilabel_cnt;
                    173:       if( $count != 0) { $args.= "&ICOUNT=$count"; }
                    174:       my $token=$Apache::lonxml::curdepth.'_'.$$;
                    175:       $result.='<img src="/adm/randomlabel.png?token='.$token;
                    176:       $result.='" /><br />'."\n";
                    177:       &Apache::lonnet::appenv(("imagerequest.$token"=>&Apache::lonnet::escape($args)));
1.4       albertel  178:   } elsif ($target eq 'tex') {
1.38      sakharuk  179:       $result='\end{picture}\\\\';
1.31      sakharuk  180: 	  @$parstack[-1]=~/\$height\s*=\s*?"(.+)?"/;
1.34      sakharuk  181:       my $one=$1;
                    182: 	  @$parstack[-1]=~/\$width\s*=\s*?"(.+)?"/;
                    183:       my $two=$1;
                    184: 	  @$parstack[-1]=~/\$texwidth\s*=\s*?"(.+)?"/;
                    185:       my $three=$1;
                    186:       my $howtoskipback = $three*$one/$two;
1.38      sakharuk  187:       $result.=' \vskip -'.$howtoskipback.' mm }';
1.4       albertel  188:   } elsif ($target eq 'edit') {
                    189:     $result.=&Apache::edit::end_table;
1.3       tsai      190:   }
                    191:   return $result;
1.1       tsai      192: }
                    193: 
                    194: sub start_labelgroup {
                    195:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    196:   my $result='';
                    197:   my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    198:   my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
1.2       tsai      199:   $type =~tr/A-Z/a-z/;
1.37      albertel  200:   if ($target eq 'web' || $target eq 'tex' ||
                    201:       $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
1.4       albertel  202:     $Apache::randomlabel::groupname=$name;
                    203:     $Apache::randomlabel::type=$type;
                    204:     @Apache::randomlabel::xcoord = ();
                    205:     @Apache::randomlabel::ycoord = ();
1.5       albertel  206:     @Apache::randomlabel::value = ();
1.4       albertel  207:     @Apache::randomlabel::label_arr  = ();
1.26      albertel  208:     @Apache::randomlabel::decription  = ();
1.4       albertel  209:   } elsif ($target eq 'edit') {
                    210:     $result.=&Apache::edit::tag_start($target,$token);
                    211:     $result.=&Apache::edit::text_arg('Name:','name',$token).
                    212:       &Apache::edit::select_arg('Type:','type',['text','image'],$token).
1.13      sakharuk  213: 	  &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1.4       albertel  214:   } elsif ($target eq 'modified') {
                    215:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    216: 						 'name','type');
                    217:     if ($constructtag) {
                    218:       $result = &Apache::edit::rebuild_tag($token);
                    219:       $result.=&Apache::edit::handle_insert();
                    220:     }
                    221:   }
1.3       tsai      222:   return $result;
1.1       tsai      223: }
                    224: 
1.5       albertel  225: sub add_vars {
1.28      albertel  226:   my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_;
1.5       albertel  227:   my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
                    228:   my $out=Apache::run::run($code,$safeeval);
                    229:   if ($value) {
                    230:     $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
                    231:     $out=Apache::run::run($code,$safeeval);
                    232:     $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
                    233:     $out=Apache::run::run($code,$safeeval);
1.4       albertel  234:   }
1.28      albertel  235:   if ($image) {
                    236:       my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';";
                    237:       my $out=Apache::run::run($code,$safeeval);
                    238:   }
1.5       albertel  239:   $code = '${'.$name."}{'numlocations'}='".($order+1)."';";
                    240:   $out=Apache::run::run($code,$safeeval);
1.4       albertel  241: }
1.5       albertel  242: 
1.1       tsai      243: # begin to assign labels to locations
                    244: sub end_labelgroup {
                    245:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    246:   my $gname = $Apache::randomlabel::groupname;
1.2       tsai      247:   my $type  = $Apache::randomlabel::type;
1.4       albertel  248:   my $result='';
1.37      albertel  249:   if ($target eq 'web' || $target eq 'answer' || $target eq 'grade' ||
                    250:       $target eq 'analyze') {
1.4       albertel  251:     my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
                    252:     &Apache::structuretags::shuffle(\@idx_arr);
                    253:     for(0 .. $#Apache::randomlabel::label_arr) {
                    254:       my $str;
                    255:       my $xstr;
                    256:       my $ystr;
                    257:       my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
1.5       albertel  258:       my $x = $Apache::randomlabel::xcoord[$_];
                    259:       my $y = $Apache::randomlabel::ycoord[$_];
                    260:       my $value = $Apache::randomlabel::value[$_];
1.4       albertel  261:       if( $type eq 'text') {
1.28      albertel  262: 	&add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval);
1.4       albertel  263: 	$str = 'LB'.$Apache::randomlabel::tlabel_cnt;
                    264: 	$xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
                    265: 	$ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
                    266: 	$Apache::randomlabel::tlabel_cnt += 1;
                    267:       } elsif ( $type eq 'image') {
1.28      albertel  268: 	&add_vars($gname,$_,
                    269: 		  $Apache::randomlabel::description[$idx_arr[$_]],
                    270: 		  $idx_arr[$_],$value,$label,$safeeval);
1.26      albertel  271: 	$str = 'IMG'.$Apache::randomlabel::ilabel_cnt;
                    272: 	$xstr = 'IX'.$Apache::randomlabel::ilabel_cnt;
                    273: 	$ystr = 'IY'.$Apache::randomlabel::ilabel_cnt;
1.4       albertel  274: 	$Apache::randomlabel::ilabel_cnt += 1;
                    275:       } else {
                    276: 	&Apache::lonxml::error('Unknown type of label :'.$type.':');
                    277:       }
1.5       albertel  278:       if ($target eq 'web') {
1.40      albertel  279: 	$result .= '&'. $str  .'='.&Apache::lonnet::escape($label);
1.39      albertel  280: 	$result .= '&'. $xstr .'='.$x;
                    281: 	$result .= '&'. $ystr .'='.$y;
1.5       albertel  282:       }
1.3       tsai      283:     }
1.4       albertel  284:   } elsif ($target eq 'tex') {
                    285:     my $WX1=0; #  Web x-coord. of upper left corner (ULC)
                    286:     my $WY1=0; #  Web y-coord. of (ULC)
                    287:     my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
                    288:     my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
                    289:     my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2);
                    290:     my $TX1=0;
                    291:     my $TY1=$texwidth*($wheight/$wwidth);
                    292:     my $TX2=$texwidth;
                    293:     my $TY2=0;
                    294: 
                    295: 
                    296:     my $slopex=($wwidth-$WX1)/($TX2-$TX1);
                    297:     my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0));
                    298:     my $cstx=$wwidth-$slopex*($TX2);
                    299:     my $csty=$wheight-$slopey*($TY2);
                    300: 
                    301:     my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
                    302:     &Apache::structuretags::shuffle(\@idx_arr);
                    303: 
                    304:     &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
                    305:     for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
                    306:       my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
                    307:       my $x = $Apache::randomlabel::xcoord[$i];
                    308:       my $y = $Apache::randomlabel::ycoord[$i];
1.5       albertel  309:       my $value = $Apache::randomlabel::value[$i];
1.31      sakharuk  310:       #x latex coordinate
1.34      sakharuk  311:       my $tcX=($x)*($texwidth/$wwidth);
1.31      sakharuk  312:       #y latex coordinate
1.34      sakharuk  313: #      my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 );
                    314:       my $tcY=$TY1-$y*($TY1/$wheight);
1.4       albertel  315:       $tcX=sprintf('%.2f',$tcX);
                    316:       $tcY=sprintf('%.2f',$tcY);
                    317:       $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
                    318:       if( $type eq 'text') {
1.28      albertel  319: 	&add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval);
1.4       albertel  320:       } elsif ( $type eq 'image') {
1.28      albertel  321: 	&add_vars($gname,$i,
                    322: 		  $Apache::randomlabel::description[$idx_arr[$i]],
                    323: 		  $idx_arr[$i],$value,$label,$safeeval);
1.4       albertel  324:       } else {
                    325: 	&Apache::lonxml::error('Unknown type of label :'.$type.':');
                    326:       }
                    327:     }
                    328:   } elsif ($target eq 'edit') {
                    329:     $result.=&Apache::edit::end_table;
1.1       tsai      330:   }
1.4       albertel  331:   return $result;
1.1       tsai      332: }
                    333: 
1.5       albertel  334: # <location x="123" y="456" value="some value"/>
1.1       tsai      335: sub start_location {
                    336:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.23      matthew   337:   my $x= &check_int(&Apache::lonxml::get_param('x',$parstack,$safeeval),50);
                    338:   my $y= &check_int(&Apache::lonxml::get_param('y',$parstack,$safeeval),50);
1.5       albertel  339:   my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
1.3       tsai      340:   my $result='';
1.1       tsai      341:   push(@Apache::randomlabel::xcoord,$x);
1.4       albertel  342:   push(@Apache::randomlabel::ycoord,$y);
1.5       albertel  343:   push(@Apache::randomlabel::value,$value);
1.4       albertel  344:   if ($target eq 'edit') {
                    345:     $result.=&Apache::edit::tag_start($target,$token);
                    346:     $result.=&Apache::edit::text_arg('X:','x',$token,4).
                    347:       &Apache::edit::text_arg('Y:','y',$token,4).
1.5       albertel  348: 	&Apache::edit::text_arg('Value:','value',$token).
1.13      sakharuk  349: 	  &Apache::edit::end_row();
1.4       albertel  350:     $result.=&Apache::edit::end_table;
                    351:   } elsif ($target eq 'modified') {
                    352:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
1.5       albertel  353: 						 'x','y','value');
1.4       albertel  354:     if ($constructtag) {
                    355:       $result = &Apache::edit::rebuild_tag($token);
                    356:       $result.=&Apache::edit::handle_insert();
                    357:     }
                    358:   }
1.3       tsai      359:   return $result;
1.1       tsai      360: }
                    361: 
                    362: sub end_location {
1.3       tsai      363:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4       albertel  364:   my @result;
                    365:   if ($target eq 'edit') { @result=('','no') }
                    366:   return @result;
1.1       tsai      367: }
                    368: 
1.2       tsai      369: # <label>$var_abc</label>
1.1       tsai      370: sub start_label {
                    371:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.3       tsai      372:   my $result='';
1.26      albertel  373:   my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
1.37      albertel  374:   if ($target eq 'web' || $target eq 'tex' ||
                    375:       $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
1.43    ! albertel  376:     my $ltext=&Apache::lonxml::get_all_text("/label",$parser);
1.14      albertel  377:     $ltext=&Apache::run::evaluate($ltext,$safeeval,$$parstack[-1]);
1.26      albertel  378:     if ($type eq 'image') {
                    379:       &Apache::lonxml::debug("Turning $ltext and $Apache::lonxml::pwd[-1]");
1.40      albertel  380:       $ltext=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],
1.26      albertel  381: 					   $ltext);
                    382:       &Apache::lonxml::debug("into $ltext");
                    383:       my $description = &Apache::lonxml::get_param('description',
                    384: 						   $parstack,$safeeval);
                    385:       push(@Apache::randomlabel::description,$description);
                    386:     }
1.4       albertel  387:     push(@Apache::randomlabel::label_arr,$ltext);
                    388:   } elsif ($target eq 'edit') {
1.26      albertel  389:     $result.=&Apache::edit::tag_start($target,$token,"$type Label");
1.43    ! albertel  390:     my $text=&Apache::lonxml::get_all_text("/label",$parser);
1.27      albertel  391:     if ($type eq 'image') {
                    392:       $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    393:       $result.=&Apache::edit::text_arg('Description:','description',$token);
                    394:     }
1.26      albertel  395:     if ($type eq 'text') { $result.="Label Text:"; }
1.40      albertel  396:     if ($type eq 'image') { $result.="Path to image:&nbsp;"; }
                    397:     $result.=&Apache::edit::editline('',$text,'',50).
1.26      albertel  398:       &Apache::edit::end_table();
1.4       albertel  399:   } elsif ($target eq 'modified') {
                    400:     my $text=$$parser[-1]->get_text("/label");
1.26      albertel  401:     $result = '<label>';
                    402:     if ($type eq 'image') {
                    403:       my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    404: 						   'description');
                    405:       if ($constructtag) {
                    406: 	$result = &Apache::edit::rebuild_tag($token);
                    407:       } else {
                    408: 	$result = $token->[4];
                    409:       }
                    410:     }
                    411:     $result.=&Apache::edit::modifiedfield($token);
1.4       albertel  412:   }
1.3       tsai      413:   return $result;
1.1       tsai      414: }
                    415: 
                    416: sub end_label {
1.3       tsai      417:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4       albertel  418:   my @result;
                    419:   if ($target eq 'edit') { @result=('','no') }
                    420:   return @result;
1.1       tsai      421: }
                    422: 
                    423: 
                    424: 
                    425: 1;
                    426: __END__
                    427:  

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