Annotation of loncom/homework/randomlabel.pm, revision 1.37

1.1       tsai        1: # The LearningOnline Network with CAPA
                      2: # random labelling tool
1.8       albertel    3: #
1.37    ! albertel    4: # $Id: randomlabel.pm,v 1.36 2002/08/27 18:21:27 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)  : $GroupTwo[2] = "TEXT-2"
1.1       tsai       58: #  ===========================================
                     59: package Apache::randomlabel;
1.24      sakharuk   60: use Apache::lonnet;
1.1       tsai       61: use strict;
1.13      sakharuk   62: use Apache::edit;
1.36      sakharuk   63: use Apache::File();
1.1       tsai       64: 
1.13      sakharuk   65: BEGIN {
1.1       tsai       66:   &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
                     67: }
                     68: 
1.23      matthew    69: sub check_int {
                     70:     # utility function to do error checking on a integer.
                     71:     my ($num,$default) = @_;
                     72:     $default = 100 if (! defined($default));
                     73:     $num =~ s/\s+//g;  # We dont need no stinkin white space!
                     74:     # If it is a real, just grab the integer part.
                     75:     ($num,undef) = split (/\./,$num) if ($num =~ /\./); 
                     76:     # set to default if what we have left doesn't match anything...
                     77:     $num = $default unless ($num =~/^\d+$/);
                     78:     return $num;
                     79: }
                     80: 
1.1       tsai       81: sub start_randomlabel {
                     82:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                     83:   my $result='';
1.23      matthew    84:   push (@Apache::lonxml::extlinks, '/res/adm/includes/GLabel.class');
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 ( $bgimg !~ /^http:/ ) {
1.23      matthew    88:     push (@Apache::lonxml::extlinks,$bgimg);
1.6       albertel   89:     $bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg);
1.7       albertel   90:     if ($bgimg =~ /$Apache::lonnet::perlvar{'lonDocRoot'}/) {
                     91:       $bgimg=~s/$Apache::lonnet::perlvar{'lonDocRoot'}//;
                     92:     } elsif ($bgimg =~ m:^/home/.*/public_html:) {
                     93:       $bgimg =~ s:^/home/(.*)/public_html:/~$1:;
                     94:     }
1.31      sakharuk   95:     $bgimg='http://'.$ENV{'SERVER_NAME'}.$bgimg;
1.6       albertel   96:   }
1.1       tsai       97:   my $code = &Apache::lonxml::get_param('code',$parstack,$safeeval);
                     98:   my $codebase = &Apache::lonxml::get_param('codebase',$parstack,$safeeval);
1.23      matthew    99:   my $w= &check_int(&Apache::lonxml::get_param('width',$parstack,$safeeval));
                    100:   my $h= &check_int(&Apache::lonxml::get_param('height',$parstack,$safeeval));
1.4       albertel  101:   my $texwidth= &Apache::lonxml::get_param('texwidth',$parstack,$safeeval);
                    102:   if (!$code) { $code='GLabel.class'; }
                    103:   if (!$codebase) { $codebase='/res/adm/includes/'; }
1.3       tsai      104:   $Apache::randomlabel::tlabel_cnt=0;
                    105:   $Apache::randomlabel::ilabel_cnt=0;
                    106:   if ($target eq 'web') {
1.26      albertel  107:     $result.="<applet code=\"$code\" codebase=\"$codebase\" width=\"$w\" height=\"$h\">\n";
                    108:     $result.="<param name=\"bgimg\" value=\"$bgimg\">\n";
1.4       albertel  109:   } elsif ($target eq 'tex') {
1.36      sakharuk  110:     my $newbgimg = $bgimg;
1.12      sakharuk  111:     $bgimg=~s/(.gif|.jpg)$/.eps/;
1.24      sakharuk  112:     $bgimg= &Apache::lonnet::filelocation($bgimg);
1.31      sakharuk  113:     if (not $ENV{'request.role'}=~/^au\./) {
                    114: 	$bgimg=~s/http:\/[^\/]*/\/home\/httpd\/html/;
1.35      sakharuk  115: 	$bgimg=~s/\/$//;
1.36      sakharuk  116:         #if no eps file try to replicate it
1.35      sakharuk  117: 	if (not-e $bgimg) {
                    118: 	    my $response = &Apache::lonnet::repcopy($bgimg);
1.36      sakharuk  119:             #if replication failed try to find ps file
                    120: 	    if (not-e $bgimg) {
                    121: 		$bgimg=~s/\.eps$/\.ps/;
                    122: 		#if no ps file try to replicate it
                    123: 		if (not-e $bgimg) {
                    124: 		    $response = &Apache::lonnet::repcopy($bgimg);
                    125: 		    #if replication failed try to produce eps file dynamically
                    126: 		    $bgimg=~s/\.ps$/\.eps/;
                    127: 		    my $temp_file;
                    128: 		    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
                    129: 		    $temp_file = Apache::File->new('>>'.$filename);
                    130: 		    $newbgimg =~ s/(.*)\/res\//\/home\/httpd\/html\/res\//;
                    131: 		    print $temp_file "$newbgimg\n";
                    132: 		    $bgimg =~ m/\/([^\/]+)$/;
                    133: 		    $bgimg = '/home/httpd/prtspool/'.$1;
                    134: 		}
                    135: 	    }
1.35      sakharuk  136: 	}
1.31      sakharuk  137:     } else {
                    138: 	$bgimg=~s/http:\/[^\/]*\/~([^\/]+)/\/home\/$1\/public_html/;
                    139:     }
1.24      sakharuk  140:     $bgimg=~s/\/$//;
1.34      sakharuk  141:     my $dirtywidth=$texwidth+5;
1.31      sakharuk  142:     if ($texwidth==90) {
1.34      sakharuk  143: 	$result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{  \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
                    144: 	    $bgimg.'}\setlength{\unitlength}{1mm}  \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
1.31      sakharuk  145:     } else {
1.34      sakharuk  146: 	$result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{  \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
                    147: 	    $bgimg.'}\setlength{\unitlength}{1mm}  \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
1.31      sakharuk  148:     }
1.3       tsai      149:   } elsif ($target eq 'edit') {
1.4       albertel  150:     $result.=&Apache::edit::tag_start($target,$token);
1.18      matthew   151:     $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' ';
                    152:     $result.=&Apache::edit::browse('bgimg').' ';
                    153:     $result.=&Apache::edit::search('bgimg').'<br />'.
1.15      matthew   154:         &Apache::edit::text_arg('Width(pixel):' ,'width'   ,$token,6).
                    155:         &Apache::edit::text_arg('Height(pixel):','height'  ,$token,6).
                    156:         &Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6).
                    157:         &Apache::edit::end_row().&Apache::edit::start_spanning_row();     
1.3       tsai      158:   } elsif ($target eq 'modified') {
1.4       albertel  159:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    160: 						 'bgimg','width','height',
                    161: 						 'texwidth');
                    162:     if ($constructtag) {
                    163:       $result = &Apache::edit::rebuild_tag($token);
                    164:       $result.=&Apache::edit::handle_insert();
                    165:     }
1.1       tsai      166:   }
                    167:   return $result;
                    168: }
                    169: 
                    170: sub end_randomlabel {
1.3       tsai      171:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    172:   my $result='';
                    173:   my $count;
1.21      albertel  174:   pop @Apache::lonxml::namespace;
1.3       tsai      175:   if ($target eq 'web') {
1.4       albertel  176:     $count = $Apache::randomlabel::tlabel_cnt;
1.26      albertel  177:     if( $count != 0) { $result.= "<param name=\"COUNT\" value=\"$count\">\n"; }
1.4       albertel  178:     $count = $Apache::randomlabel::ilabel_cnt;
1.26      albertel  179:     if( $count != 0) { $result.= "<param name=\"ICOUNT\" value=\"$count\">\n"; }
                    180:     $result .= "</applet>\n<BR />";
1.4       albertel  181:   } elsif ($target eq 'tex') {
1.33      sakharuk  182:       $result='\end{picture}\\\\}';
1.31      sakharuk  183: 	  @$parstack[-1]=~/\$height\s*=\s*?"(.+)?"/;
1.34      sakharuk  184:       my $one=$1;
                    185: 	  @$parstack[-1]=~/\$width\s*=\s*?"(.+)?"/;
                    186:       my $two=$1;
                    187: 	  @$parstack[-1]=~/\$texwidth\s*=\s*?"(.+)?"/;
                    188:       my $three=$1;
                    189:       my $howtoskipback = $three*$one/$two;
                    190:       $result.=' \vskip -'.$howtoskipback.' mm ';
1.4       albertel  191:   } elsif ($target eq 'edit') {
                    192:     $result.=&Apache::edit::end_table;
1.3       tsai      193:   }
                    194:   return $result;
1.1       tsai      195: }
                    196: 
                    197: sub start_labelgroup {
                    198:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    199:   my $result='';
                    200:   my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    201:   my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
1.2       tsai      202:   $type =~tr/A-Z/a-z/;
1.37    ! albertel  203:   if ($target eq 'web' || $target eq 'tex' ||
        !           204:       $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
1.4       albertel  205:     $Apache::randomlabel::groupname=$name;
                    206:     $Apache::randomlabel::type=$type;
                    207:     @Apache::randomlabel::xcoord = ();
                    208:     @Apache::randomlabel::ycoord = ();
1.5       albertel  209:     @Apache::randomlabel::value = ();
1.4       albertel  210:     @Apache::randomlabel::label_arr  = ();
1.26      albertel  211:     @Apache::randomlabel::decription  = ();
1.4       albertel  212:   } elsif ($target eq 'edit') {
                    213:     $result.=&Apache::edit::tag_start($target,$token);
                    214:     $result.=&Apache::edit::text_arg('Name:','name',$token).
                    215:       &Apache::edit::select_arg('Type:','type',['text','image'],$token).
1.13      sakharuk  216: 	  &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1.4       albertel  217:   } elsif ($target eq 'modified') {
                    218:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    219: 						 'name','type');
                    220:     if ($constructtag) {
                    221:       $result = &Apache::edit::rebuild_tag($token);
                    222:       $result.=&Apache::edit::handle_insert();
                    223:     }
                    224:   }
1.3       tsai      225:   return $result;
1.1       tsai      226: }
                    227: 
1.5       albertel  228: sub add_vars {
1.28      albertel  229:   my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_;
1.5       albertel  230:   my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
                    231:   my $out=Apache::run::run($code,$safeeval);
                    232:   if ($value) {
                    233:     $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
                    234:     $out=Apache::run::run($code,$safeeval);
                    235:     $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
                    236:     $out=Apache::run::run($code,$safeeval);
1.4       albertel  237:   }
1.28      albertel  238:   if ($image) {
                    239:       my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';";
                    240:       my $out=Apache::run::run($code,$safeeval);
                    241:   }
1.5       albertel  242:   $code = '${'.$name."}{'numlocations'}='".($order+1)."';";
                    243:   $out=Apache::run::run($code,$safeeval);
1.4       albertel  244: }
1.5       albertel  245: 
1.1       tsai      246: # begin to assign labels to locations
                    247: sub end_labelgroup {
                    248:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    249:   my $gname = $Apache::randomlabel::groupname;
1.2       tsai      250:   my $type  = $Apache::randomlabel::type;
1.4       albertel  251:   my $result='';
1.37    ! albertel  252:   if ($target eq 'web' || $target eq 'answer' || $target eq 'grade' ||
        !           253:       $target eq 'analyze') {
1.4       albertel  254:     my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
                    255:     &Apache::structuretags::shuffle(\@idx_arr);
                    256:     for(0 .. $#Apache::randomlabel::label_arr) {
                    257:       my $str;
                    258:       my $xstr;
                    259:       my $ystr;
                    260:       my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
1.5       albertel  261:       my $x = $Apache::randomlabel::xcoord[$_];
                    262:       my $y = $Apache::randomlabel::ycoord[$_];
                    263:       my $value = $Apache::randomlabel::value[$_];
1.4       albertel  264:       if( $type eq 'text') {
1.28      albertel  265: 	&add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval);
1.4       albertel  266: 	$str = 'LB'.$Apache::randomlabel::tlabel_cnt;
                    267: 	$xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
                    268: 	$ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
                    269: 	$Apache::randomlabel::tlabel_cnt += 1;
                    270:       } elsif ( $type eq 'image') {
1.28      albertel  271: 	&add_vars($gname,$_,
                    272: 		  $Apache::randomlabel::description[$idx_arr[$_]],
                    273: 		  $idx_arr[$_],$value,$label,$safeeval);
1.26      albertel  274: 	$str = 'IMG'.$Apache::randomlabel::ilabel_cnt;
                    275: 	$xstr = 'IX'.$Apache::randomlabel::ilabel_cnt;
                    276: 	$ystr = 'IY'.$Apache::randomlabel::ilabel_cnt;
1.4       albertel  277: 	$Apache::randomlabel::ilabel_cnt += 1;
                    278:       } else {
                    279: 	&Apache::lonxml::error('Unknown type of label :'.$type.':');
                    280:       }
1.5       albertel  281:       if ($target eq 'web') {
                    282: 	$result .= '<param name="' . $str  . '" value="'.$label.'">';
                    283: 	$result .= '<param name="' . $xstr . '" value="'.$x.'">';
1.26      albertel  284: 	$result .= '<param name="' . $ystr . '" value="'.$y.'">'."\n";
1.5       albertel  285:       }
1.3       tsai      286:     }
1.4       albertel  287:   } elsif ($target eq 'tex') {
                    288:     my $WX1=0; #  Web x-coord. of upper left corner (ULC)
                    289:     my $WY1=0; #  Web y-coord. of (ULC)
                    290:     my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
                    291:     my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
                    292:     my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2);
                    293:     my $TX1=0;
                    294:     my $TY1=$texwidth*($wheight/$wwidth);
                    295:     my $TX2=$texwidth;
                    296:     my $TY2=0;
                    297: 
                    298: 
                    299:     my $slopex=($wwidth-$WX1)/($TX2-$TX1);
                    300:     my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0));
                    301:     my $cstx=$wwidth-$slopex*($TX2);
                    302:     my $csty=$wheight-$slopey*($TY2);
                    303: 
                    304:     my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
                    305:     &Apache::structuretags::shuffle(\@idx_arr);
                    306: 
                    307:     &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
                    308:     for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
                    309:       my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
                    310:       my $x = $Apache::randomlabel::xcoord[$i];
                    311:       my $y = $Apache::randomlabel::ycoord[$i];
1.5       albertel  312:       my $value = $Apache::randomlabel::value[$i];
1.31      sakharuk  313:       #x latex coordinate
1.34      sakharuk  314:       my $tcX=($x)*($texwidth/$wwidth);
1.31      sakharuk  315:       #y latex coordinate
1.34      sakharuk  316: #      my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 );
                    317:       my $tcY=$TY1-$y*($TY1/$wheight);
1.4       albertel  318:       $tcX=sprintf('%.2f',$tcX);
                    319:       $tcY=sprintf('%.2f',$tcY);
                    320:       $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
                    321:       if( $type eq 'text') {
1.28      albertel  322: 	&add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval);
1.4       albertel  323:       } elsif ( $type eq 'image') {
1.28      albertel  324: 	&add_vars($gname,$i,
                    325: 		  $Apache::randomlabel::description[$idx_arr[$i]],
                    326: 		  $idx_arr[$i],$value,$label,$safeeval);
1.4       albertel  327:       } else {
                    328: 	&Apache::lonxml::error('Unknown type of label :'.$type.':');
                    329:       }
                    330:     }
                    331:   } elsif ($target eq 'edit') {
                    332:     $result.=&Apache::edit::end_table;
1.1       tsai      333:   }
1.4       albertel  334:   return $result;
1.1       tsai      335: }
                    336: 
1.5       albertel  337: # <location x="123" y="456" value="some value"/>
1.1       tsai      338: sub start_location {
                    339:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.23      matthew   340:   my $x= &check_int(&Apache::lonxml::get_param('x',$parstack,$safeeval),50);
                    341:   my $y= &check_int(&Apache::lonxml::get_param('y',$parstack,$safeeval),50);
1.5       albertel  342:   my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
1.3       tsai      343:   my $result='';
1.1       tsai      344:   push(@Apache::randomlabel::xcoord,$x);
1.4       albertel  345:   push(@Apache::randomlabel::ycoord,$y);
1.5       albertel  346:   push(@Apache::randomlabel::value,$value);
1.4       albertel  347:   if ($target eq 'edit') {
                    348:     $result.=&Apache::edit::tag_start($target,$token);
                    349:     $result.=&Apache::edit::text_arg('X:','x',$token,4).
                    350:       &Apache::edit::text_arg('Y:','y',$token,4).
1.5       albertel  351: 	&Apache::edit::text_arg('Value:','value',$token).
1.13      sakharuk  352: 	  &Apache::edit::end_row();
1.4       albertel  353:     $result.=&Apache::edit::end_table;
                    354:   } elsif ($target eq 'modified') {
                    355:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
1.5       albertel  356: 						 'x','y','value');
1.4       albertel  357:     if ($constructtag) {
                    358:       $result = &Apache::edit::rebuild_tag($token);
                    359:       $result.=&Apache::edit::handle_insert();
                    360:     }
                    361:   }
1.3       tsai      362:   return $result;
1.1       tsai      363: }
                    364: 
                    365: sub end_location {
1.3       tsai      366:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4       albertel  367:   my @result;
                    368:   if ($target eq 'edit') { @result=('','no') }
                    369:   return @result;
1.1       tsai      370: }
                    371: 
1.2       tsai      372: # <label>$var_abc</label>
1.1       tsai      373: sub start_label {
                    374:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.3       tsai      375:   my $result='';
1.26      albertel  376:   my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
1.37    ! albertel  377:   if ($target eq 'web' || $target eq 'tex' ||
        !           378:       $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
1.4       albertel  379:     my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.14      albertel  380:     $ltext=&Apache::run::evaluate($ltext,$safeeval,$$parstack[-1]);
1.26      albertel  381:     if ($type eq 'image') {
                    382:       &Apache::lonxml::debug("Turning $ltext and $Apache::lonxml::pwd[-1]");
                    383:       $ltext="http://$ENV{'SERVER_NAME'}".&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],
                    384: 					   $ltext);
                    385:       &Apache::lonxml::debug("into $ltext");
                    386:       my $description = &Apache::lonxml::get_param('description',
                    387: 						   $parstack,$safeeval);
                    388:       push(@Apache::randomlabel::description,$description);
                    389:     }
1.4       albertel  390:     push(@Apache::randomlabel::label_arr,$ltext);
                    391:   } elsif ($target eq 'edit') {
1.26      albertel  392:     $result.=&Apache::edit::tag_start($target,$token,"$type Label");
1.4       albertel  393:     my $text=&Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.27      albertel  394:     if ($type eq 'image') {
                    395:       $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    396:       $result.=&Apache::edit::text_arg('Description:','description',$token);
                    397:     }
1.26      albertel  398:     if ($type eq 'text') { $result.="Label Text:"; }
                    399:     if ($type eq 'image') { $result.="Path to image:"; }
                    400:     $result.=&Apache::edit::editline('',$text,'',20).
                    401:       &Apache::edit::end_table();
1.4       albertel  402:   } elsif ($target eq 'modified') {
                    403:     my $text=$$parser[-1]->get_text("/label");
1.26      albertel  404:     $result = '<label>';
                    405:     if ($type eq 'image') {
                    406:       my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
                    407: 						   'description');
                    408:       if ($constructtag) {
                    409: 	$result = &Apache::edit::rebuild_tag($token);
                    410:       } else {
                    411: 	$result = $token->[4];
                    412:       }
                    413:     }
                    414:     $result.=&Apache::edit::modifiedfield($token);
1.4       albertel  415:   }
1.3       tsai      416:   return $result;
1.1       tsai      417: }
                    418: 
                    419: sub end_label {
1.3       tsai      420:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4       albertel  421:   my @result;
                    422:   if ($target eq 'edit') { @result=('','no') }
                    423:   return @result;
1.1       tsai      424: }
                    425: 
                    426: 
                    427: 
                    428: 1;
                    429: __END__
                    430:  

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