Annotation of loncom/homework/randomlabel.pm, revision 1.46

1.1       tsai        1: # The LearningOnline Network with CAPA
                      2: # random labelling tool
1.8       albertel    3: #
1.46    ! albertel    4: # $Id: randomlabel.pm,v 1.45 2003/05/19 17:10:12 sakharuk 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') {
1.45      sakharuk  102:       my $newbgimg = $bgimg;
                    103:       $bgimg=~s/\.(gif|jpg|png|jpeg)$/\.eps/i;
                    104:       $bgimg= &Apache::lonnet::filelocation($bgimg);
                    105:       $bgimg=~s/http:\/[^\/]*/\/home\/httpd\/html/;
                    106:       $bgimg=~s/\/$//;
                    107:       #if no eps file try to replicate it
                    108:       if (not-e $bgimg) {
                    109: 	  if (&Apache::lonnet::repcopy($bgimg) ne OK ) {
                    110: 	      #if replication failed try to find ps file
                    111: 	      $bgimg=~s/\.eps$/\.ps/;
                    112: 	      #if no ps file try to replicate it
                    113: 		if (not -e $bgimg &&
1.38      sakharuk  114: 		    &Apache::lonnet::repcopy($bgimg) ne OK) {
                    115:                     #if replication failed try to produce eps file dynamically
1.36      sakharuk  116: 		    $bgimg=~s/\.ps$/\.eps/;
                    117: 		    my $temp_file;
                    118: 		    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
                    119: 		    $temp_file = Apache::File->new('>>'.$filename);
                    120: 		    $newbgimg =~ s/(.*)\/res\//\/home\/httpd\/html\/res\//;
                    121: 		    print $temp_file "$newbgimg\n";
                    122: 		    $bgimg =~ m/\/([^\/]+)$/;
                    123: 		    $bgimg = '/home/httpd/prtspool/'.$1;
                    124: 		}
1.45      sakharuk  125: 	  }
                    126:       }
1.24      sakharuk  127:     $bgimg=~s/\/$//;
1.34      sakharuk  128:     my $dirtywidth=$texwidth+5;
1.31      sakharuk  129:     if ($texwidth==90) {
1.34      sakharuk  130: 	$result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{  \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
                    131: 	    $bgimg.'}\setlength{\unitlength}{1mm}  \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
1.31      sakharuk  132:     } else {
1.34      sakharuk  133: 	$result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{  \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
                    134: 	    $bgimg.'}\setlength{\unitlength}{1mm}  \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
1.31      sakharuk  135:     }
1.3       tsai      136:   } elsif ($target eq 'edit') {
1.4       albertel  137:     $result.=&Apache::edit::tag_start($target,$token);
1.44      www       138:     $Apache::edit::bgimgsrc=
                    139: 	&Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
                    140:     $Apache::edit::bgimgsrccurdepth=$Apache::lonxml::curdepth;
1.18      matthew   141:     $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' ';
                    142:     $result.=&Apache::edit::browse('bgimg').' ';
                    143:     $result.=&Apache::edit::search('bgimg').'<br />'.
1.15      matthew   144:         &Apache::edit::text_arg('Width(pixel):' ,'width'   ,$token,6).
                    145:         &Apache::edit::text_arg('Height(pixel):','height'  ,$token,6).
                    146:         &Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6).
                    147:         &Apache::edit::end_row().&Apache::edit::start_spanning_row();     
1.3       tsai      148:   } elsif ($target eq 'modified') {
1.4       albertel  149:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    150: 						 'bgimg','width','height',
                    151: 						 'texwidth');
                    152:     if ($constructtag) {
                    153:       $result = &Apache::edit::rebuild_tag($token);
                    154:       $result.=&Apache::edit::handle_insert();
                    155:     }
1.1       tsai      156:   }
                    157:   return $result;
                    158: }
                    159: 
                    160: sub end_randomlabel {
1.3       tsai      161:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    162:   my $result='';
                    163:   my $count;
1.21      albertel  164:   pop @Apache::lonxml::namespace;
1.3       tsai      165:   if ($target eq 'web') {
1.40      albertel  166:       my $args=&Apache::lonxml::endredirection();
                    167:       $args=~s/\s*&/&/g;
                    168:       $args=~s/\s*$//;
                    169:       $count = $Apache::randomlabel::tlabel_cnt;
                    170:       if( $count != 0) { $args.= "&COUNT=$count"; }
                    171:       $count = $Apache::randomlabel::ilabel_cnt;
                    172:       if( $count != 0) { $args.= "&ICOUNT=$count"; }
                    173:       my $token=$Apache::lonxml::curdepth.'_'.$$;
                    174:       $result.='<img src="/adm/randomlabel.png?token='.$token;
                    175:       $result.='" /><br />'."\n";
                    176:       &Apache::lonnet::appenv(("imagerequest.$token"=>&Apache::lonnet::escape($args)));
1.4       albertel  177:   } elsif ($target eq 'tex') {
1.38      sakharuk  178:       $result='\end{picture}\\\\';
1.46    ! albertel  179:       my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
        !           180:       my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
        !           181:       my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval);
        !           182:       my $howtoskipback = $texwidth*$height/$width;
        !           183:       $result.= ' \vskip -'.$howtoskipback.' mm }  \\\\ ';
1.4       albertel  184:   } elsif ($target eq 'edit') {
                    185:     $result.=&Apache::edit::end_table;
1.3       tsai      186:   }
                    187:   return $result;
1.1       tsai      188: }
                    189: 
                    190: sub start_labelgroup {
                    191:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    192:   my $result='';
                    193:   my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    194:   my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
1.2       tsai      195:   $type =~tr/A-Z/a-z/;
1.37      albertel  196:   if ($target eq 'web' || $target eq 'tex' ||
                    197:       $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
1.4       albertel  198:     $Apache::randomlabel::groupname=$name;
                    199:     $Apache::randomlabel::type=$type;
                    200:     @Apache::randomlabel::xcoord = ();
                    201:     @Apache::randomlabel::ycoord = ();
1.5       albertel  202:     @Apache::randomlabel::value = ();
1.4       albertel  203:     @Apache::randomlabel::label_arr  = ();
1.26      albertel  204:     @Apache::randomlabel::decription  = ();
1.4       albertel  205:   } elsif ($target eq 'edit') {
                    206:     $result.=&Apache::edit::tag_start($target,$token);
                    207:     $result.=&Apache::edit::text_arg('Name:','name',$token).
                    208:       &Apache::edit::select_arg('Type:','type',['text','image'],$token).
1.13      sakharuk  209: 	  &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1.4       albertel  210:   } elsif ($target eq 'modified') {
                    211:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    212: 						 'name','type');
                    213:     if ($constructtag) {
                    214:       $result = &Apache::edit::rebuild_tag($token);
                    215:       $result.=&Apache::edit::handle_insert();
                    216:     }
                    217:   }
1.3       tsai      218:   return $result;
1.1       tsai      219: }
                    220: 
1.5       albertel  221: sub add_vars {
1.28      albertel  222:   my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_;
1.5       albertel  223:   my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
                    224:   my $out=Apache::run::run($code,$safeeval);
                    225:   if ($value) {
                    226:     $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
                    227:     $out=Apache::run::run($code,$safeeval);
                    228:     $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
                    229:     $out=Apache::run::run($code,$safeeval);
1.4       albertel  230:   }
1.28      albertel  231:   if ($image) {
                    232:       my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';";
                    233:       my $out=Apache::run::run($code,$safeeval);
                    234:   }
1.5       albertel  235:   $code = '${'.$name."}{'numlocations'}='".($order+1)."';";
                    236:   $out=Apache::run::run($code,$safeeval);
1.4       albertel  237: }
1.5       albertel  238: 
1.1       tsai      239: # begin to assign labels to locations
                    240: sub end_labelgroup {
                    241:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    242:   my $gname = $Apache::randomlabel::groupname;
1.2       tsai      243:   my $type  = $Apache::randomlabel::type;
1.4       albertel  244:   my $result='';
1.37      albertel  245:   if ($target eq 'web' || $target eq 'answer' || $target eq 'grade' ||
                    246:       $target eq 'analyze') {
1.4       albertel  247:     my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
                    248:     &Apache::structuretags::shuffle(\@idx_arr);
                    249:     for(0 .. $#Apache::randomlabel::label_arr) {
                    250:       my $str;
                    251:       my $xstr;
                    252:       my $ystr;
                    253:       my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
1.5       albertel  254:       my $x = $Apache::randomlabel::xcoord[$_];
                    255:       my $y = $Apache::randomlabel::ycoord[$_];
                    256:       my $value = $Apache::randomlabel::value[$_];
1.4       albertel  257:       if( $type eq 'text') {
1.28      albertel  258: 	&add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval);
1.4       albertel  259: 	$str = 'LB'.$Apache::randomlabel::tlabel_cnt;
                    260: 	$xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
                    261: 	$ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
                    262: 	$Apache::randomlabel::tlabel_cnt += 1;
                    263:       } elsif ( $type eq 'image') {
1.28      albertel  264: 	&add_vars($gname,$_,
                    265: 		  $Apache::randomlabel::description[$idx_arr[$_]],
                    266: 		  $idx_arr[$_],$value,$label,$safeeval);
1.26      albertel  267: 	$str = 'IMG'.$Apache::randomlabel::ilabel_cnt;
                    268: 	$xstr = 'IX'.$Apache::randomlabel::ilabel_cnt;
                    269: 	$ystr = 'IY'.$Apache::randomlabel::ilabel_cnt;
1.4       albertel  270: 	$Apache::randomlabel::ilabel_cnt += 1;
                    271:       } else {
                    272: 	&Apache::lonxml::error('Unknown type of label :'.$type.':');
                    273:       }
1.5       albertel  274:       if ($target eq 'web') {
1.40      albertel  275: 	$result .= '&'. $str  .'='.&Apache::lonnet::escape($label);
1.39      albertel  276: 	$result .= '&'. $xstr .'='.$x;
                    277: 	$result .= '&'. $ystr .'='.$y;
1.5       albertel  278:       }
1.3       tsai      279:     }
1.4       albertel  280:   } elsif ($target eq 'tex') {
                    281:     my $WX1=0; #  Web x-coord. of upper left corner (ULC)
                    282:     my $WY1=0; #  Web y-coord. of (ULC)
                    283:     my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
                    284:     my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
                    285:     my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2);
                    286:     my $TX1=0;
                    287:     my $TY1=$texwidth*($wheight/$wwidth);
                    288:     my $TX2=$texwidth;
                    289:     my $TY2=0;
                    290: 
                    291: 
                    292:     my $slopex=($wwidth-$WX1)/($TX2-$TX1);
                    293:     my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0));
                    294:     my $cstx=$wwidth-$slopex*($TX2);
                    295:     my $csty=$wheight-$slopey*($TY2);
                    296: 
                    297:     my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
                    298:     &Apache::structuretags::shuffle(\@idx_arr);
                    299: 
                    300:     &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
                    301:     for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
                    302:       my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
                    303:       my $x = $Apache::randomlabel::xcoord[$i];
                    304:       my $y = $Apache::randomlabel::ycoord[$i];
1.5       albertel  305:       my $value = $Apache::randomlabel::value[$i];
1.31      sakharuk  306:       #x latex coordinate
1.34      sakharuk  307:       my $tcX=($x)*($texwidth/$wwidth);
1.31      sakharuk  308:       #y latex coordinate
1.34      sakharuk  309: #      my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 );
                    310:       my $tcY=$TY1-$y*($TY1/$wheight);
1.4       albertel  311:       $tcX=sprintf('%.2f',$tcX);
                    312:       $tcY=sprintf('%.2f',$tcY);
                    313:       $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
                    314:       if( $type eq 'text') {
1.28      albertel  315: 	&add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval);
1.4       albertel  316:       } elsif ( $type eq 'image') {
1.28      albertel  317: 	&add_vars($gname,$i,
                    318: 		  $Apache::randomlabel::description[$idx_arr[$i]],
                    319: 		  $idx_arr[$i],$value,$label,$safeeval);
1.4       albertel  320:       } else {
                    321: 	&Apache::lonxml::error('Unknown type of label :'.$type.':');
                    322:       }
                    323:     }
                    324:   } elsif ($target eq 'edit') {
                    325:     $result.=&Apache::edit::end_table;
1.1       tsai      326:   }
1.4       albertel  327:   return $result;
1.1       tsai      328: }
                    329: 
1.5       albertel  330: # <location x="123" y="456" value="some value"/>
1.1       tsai      331: sub start_location {
                    332:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.23      matthew   333:   my $x= &check_int(&Apache::lonxml::get_param('x',$parstack,$safeeval),50);
                    334:   my $y= &check_int(&Apache::lonxml::get_param('y',$parstack,$safeeval),50);
1.5       albertel  335:   my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
1.3       tsai      336:   my $result='';
1.1       tsai      337:   push(@Apache::randomlabel::xcoord,$x);
1.4       albertel  338:   push(@Apache::randomlabel::ycoord,$y);
1.5       albertel  339:   push(@Apache::randomlabel::value,$value);
1.4       albertel  340:   if ($target eq 'edit') {
                    341:     $result.=&Apache::edit::tag_start($target,$token);
                    342:     $result.=&Apache::edit::text_arg('X:','x',$token,4).
                    343:       &Apache::edit::text_arg('Y:','y',$token,4).
1.44      www       344:       &Apache::edit::entercoords('x','y','attribute','width','height').'&nbsp;&nbsp;&nbsp;'.
1.5       albertel  345: 	&Apache::edit::text_arg('Value:','value',$token).
1.13      sakharuk  346: 	  &Apache::edit::end_row();
1.4       albertel  347:     $result.=&Apache::edit::end_table;
                    348:   } elsif ($target eq 'modified') {
                    349:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
1.5       albertel  350: 						 'x','y','value');
1.4       albertel  351:     if ($constructtag) {
                    352:       $result = &Apache::edit::rebuild_tag($token);
                    353:       $result.=&Apache::edit::handle_insert();
                    354:     }
                    355:   }
1.3       tsai      356:   return $result;
1.1       tsai      357: }
                    358: 
                    359: sub end_location {
1.3       tsai      360:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4       albertel  361:   my @result;
                    362:   if ($target eq 'edit') { @result=('','no') }
                    363:   return @result;
1.1       tsai      364: }
                    365: 
1.2       tsai      366: # <label>$var_abc</label>
1.1       tsai      367: sub start_label {
                    368:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.3       tsai      369:   my $result='';
1.26      albertel  370:   my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
1.37      albertel  371:   if ($target eq 'web' || $target eq 'tex' ||
                    372:       $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
1.43      albertel  373:     my $ltext=&Apache::lonxml::get_all_text("/label",$parser);
1.14      albertel  374:     $ltext=&Apache::run::evaluate($ltext,$safeeval,$$parstack[-1]);
1.26      albertel  375:     if ($type eq 'image') {
                    376:       &Apache::lonxml::debug("Turning $ltext and $Apache::lonxml::pwd[-1]");
1.40      albertel  377:       $ltext=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],
1.26      albertel  378: 					   $ltext);
                    379:       &Apache::lonxml::debug("into $ltext");
                    380:       my $description = &Apache::lonxml::get_param('description',
                    381: 						   $parstack,$safeeval);
                    382:       push(@Apache::randomlabel::description,$description);
                    383:     }
1.4       albertel  384:     push(@Apache::randomlabel::label_arr,$ltext);
                    385:   } elsif ($target eq 'edit') {
1.26      albertel  386:     $result.=&Apache::edit::tag_start($target,$token,"$type Label");
1.43      albertel  387:     my $text=&Apache::lonxml::get_all_text("/label",$parser);
1.27      albertel  388:     if ($type eq 'image') {
                    389:       $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    390:       $result.=&Apache::edit::text_arg('Description:','description',$token);
                    391:     }
1.26      albertel  392:     if ($type eq 'text') { $result.="Label Text:"; }
1.40      albertel  393:     if ($type eq 'image') { $result.="Path to image:&nbsp;"; }
                    394:     $result.=&Apache::edit::editline('',$text,'',50).
1.26      albertel  395:       &Apache::edit::end_table();
1.4       albertel  396:   } elsif ($target eq 'modified') {
                    397:     my $text=$$parser[-1]->get_text("/label");
1.26      albertel  398:     $result = '<label>';
                    399:     if ($type eq 'image') {
                    400:       my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    401: 						   'description');
                    402:       if ($constructtag) {
                    403: 	$result = &Apache::edit::rebuild_tag($token);
                    404:       } else {
                    405: 	$result = $token->[4];
                    406:       }
                    407:     }
                    408:     $result.=&Apache::edit::modifiedfield($token);
1.4       albertel  409:   }
1.3       tsai      410:   return $result;
1.1       tsai      411: }
                    412: 
                    413: sub end_label {
1.3       tsai      414:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4       albertel  415:   my @result;
                    416:   if ($target eq 'edit') { @result=('','no') }
                    417:   return @result;
1.1       tsai      418: }
                    419: 
                    420: 
                    421: 
                    422: 1;
                    423: __END__
                    424:  

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