Annotation of loncom/homework/randomlabel.pm, revision 1.53

1.1       tsai        1: # The LearningOnline Network with CAPA
                      2: # random labelling tool
1.8       albertel    3: #
1.53    ! albertel    4: # $Id: randomlabel.pm,v 1.52 2003/10/30 20:52:54 albertel 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: 
1.53    ! albertel   66: my %args;
        !            67: my $cgi_id;
        !            68: 
1.13      sakharuk   69: BEGIN {
1.47      albertel   70:     &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
1.1       tsai       71: }
                     72: 
1.23      matthew    73: sub check_int {
                     74:     # utility function to do error checking on a integer.
                     75:     my ($num,$default) = @_;
                     76:     $default = 100 if (! defined($default));
                     77:     $num =~ s/\s+//g;  # We dont need no stinkin white space!
                     78:     # If it is a real, just grab the integer part.
                     79:     ($num,undef) = split (/\./,$num) if ($num =~ /\./); 
                     80:     # set to default if what we have left doesn't match anything...
                     81:     $num = $default unless ($num =~/^\d+$/);
                     82:     return $num;
                     83: }
                     84: 
1.1       tsai       85: sub start_randomlabel {
1.47      albertel   86:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                     87:     my $result='';
                     88:     push (@Apache::lonxml::namespace,'randomlabel');
                     89:     my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
                     90:     if ( $bgimg !~ /^http:/ ) {
                     91: 	$bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg);
                     92: 	if (&Apache::lonnet::repcopy($bgimg) ne OK) {
                     93: 	    $bgimg='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
                     94: 	}
1.42      www        95:     }
1.47      albertel   96:     my $w= &check_int(&Apache::lonxml::get_param('width',$parstack,$safeeval));
                     97:     my $h= &check_int(&Apache::lonxml::get_param('height',$parstack,$safeeval));
1.50      sakharuk   98:     my $texwidth=&adjust_textwidth(&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,undef,1));
1.49      albertel   99:     if (!$texwidth) { $texwidth=90; }
1.47      albertel  100:     $Apache::randomlabel::tlabel_cnt=0;
                    101:     $Apache::randomlabel::ilabel_cnt=0;
                    102:     if ($target eq 'web') {
1.53    ! albertel  103: 	$cgi_id=&Apache::loncommon::get_cgi_id();
        !           104: 	%args=();
        !           105: 	$args{"cgi.$cgi_id.BGIMG"}=&Apache::lonnet::escape($bgimg);
1.47      albertel  106:     } elsif ($target eq 'tex') {
                    107: 	my $newbgimg = $bgimg;
                    108: 	$bgimg=~s/\.(gif|jpg|png|jpeg)$/\.eps/i;
                    109: 	$bgimg= &Apache::lonnet::filelocation($bgimg);
                    110: 	$bgimg=~s/http:\/[^\/]*/\/home\/httpd\/html/;
                    111: 	$bgimg=~s/\/$//;
                    112: 	#if no eps file try to replicate it
                    113: 	if (not-e $bgimg) {
                    114: 	    if (&Apache::lonnet::repcopy($bgimg) ne OK ) {
                    115: 		#if replication failed try to find ps file
                    116: 		$bgimg=~s/\.eps$/\.ps/;
                    117: 		#if no ps file try to replicate it
1.45      sakharuk  118: 		if (not -e $bgimg &&
1.38      sakharuk  119: 		    &Apache::lonnet::repcopy($bgimg) ne OK) {
                    120:                     #if replication failed try to produce eps file dynamically
1.36      sakharuk  121: 		    $bgimg=~s/\.ps$/\.eps/;
                    122: 		    my $temp_file;
                    123: 		    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
                    124: 		    $temp_file = Apache::File->new('>>'.$filename);
                    125: 		    $newbgimg =~ s/(.*)\/res\//\/home\/httpd\/html\/res\//;
                    126: 		    print $temp_file "$newbgimg\n";
1.51      sakharuk  127: 		    $bgimg=~s/\/home\/httpd\/html\/res/\/home\/httpd\/prtspool/;		}
1.47      albertel  128: 	    }
                    129: 	}
                    130: 	$bgimg=~s/\/$//;
                    131: 	my $dirtywidth=$texwidth+5;
1.50      sakharuk  132: 	$result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{  \noindent \epsfxsize='.
                    133: 	    $texwidth.' mm \epsffile{'.$bgimg.'}\setlength{\unitlength}{1mm}  \begin{picture}('.
                    134: 	    $texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
1.47      albertel  135:     } elsif ($target eq 'edit') {
                    136: 	$result.=&Apache::edit::tag_start($target,$token);
                    137: 	$Apache::edit::bgimgsrc=
                    138: 	    &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
                    139: 	$Apache::edit::bgimgsrccurdepth=$Apache::lonxml::curdepth;
                    140: 	$result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' ';
                    141: 	$result.=&Apache::edit::browse('bgimg').' ';
                    142: 	$result.=&Apache::edit::search('bgimg').'<br />'.
                    143: 	    &Apache::edit::text_arg('Width(pixel):' ,'width'   ,$token,6).
                    144: 	    &Apache::edit::text_arg('Height(pixel):','height'  ,$token,6).
                    145: 	    &Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6).
                    146: 	    &Apache::edit::end_row().&Apache::edit::start_spanning_row();     
                    147:     } elsif ($target eq 'modified') {
                    148: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    149: 						     $safeeval,'bgimg','width',
                    150: 						     'height','texwidth');
                    151: 	if ($constructtag) {
                    152: 	    $result = &Apache::edit::rebuild_tag($token);
                    153: 	    $result.=&Apache::edit::handle_insert();
                    154: 	}
1.31      sakharuk  155:     }
1.47      albertel  156:     return $result;
1.1       tsai      157: }
                    158: 
                    159: sub end_randomlabel {
1.47      albertel  160:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    161:     my $result='';
                    162:     my $count;
                    163:     pop @Apache::lonxml::namespace;
                    164:     if ($target eq 'web') {
                    165: 	$count = $Apache::randomlabel::tlabel_cnt;
1.53    ! albertel  166: 	if( $count != 0) { $args{"cgi.$cgi_id.COUNT"}=$count; }
1.47      albertel  167: 	$count = $Apache::randomlabel::ilabel_cnt;
1.53    ! albertel  168: 	if( $count != 0) { $args{"cgi.$cgi_id.ICOUNT"}=$count; }
        !           169: 	$result.='<img src="/adm/randomlabel.png?token='.$cgi_id.'" /><br />'."\n";
        !           170: 	&Apache::lonnet::appenv(%args);
1.47      albertel  171:     } elsif ($target eq 'tex') {
                    172: 	$result='\end{picture}\\\\';
                    173: 	my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
                    174: 	my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
1.50      sakharuk  175: 	my $texwidth=&adjust_textwidth(&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,undef,1));
1.49      albertel  176:         if (!$texwidth) { $texwidth=90; }
1.47      albertel  177: 	my $howtoskipback = $texwidth*$height/$width;
                    178: 	$result.= ' \vskip -'.$howtoskipback.' mm }  \\\\ ';
                    179:     } elsif ($target eq 'edit') {
                    180: 	$result.=&Apache::edit::end_table;
                    181:     }
                    182:     return $result;
1.1       tsai      183: }
                    184: 
1.50      sakharuk  185: sub adjust_textwidth {
                    186:     my $texwidth=shift; 
                    187:     my $pagewidth=$ENV{'form.textwidth'};
                    188:     $pagewidth=~s/\s*mm\s*$//;
                    189:     if ($texwidth>$pagewidth) {$texwidth=$pagewidth;}
                    190:     return $texwidth;
                    191: }
                    192: 
1.1       tsai      193: sub start_labelgroup {
1.47      albertel  194:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    195:     my $result='';
                    196:     my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    197:     my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
                    198:     $type =~tr/A-Z/a-z/;
1.48      albertel  199:     if ($target ne 'modified' && ($name =~ /\W/ || $name =~ /^[0-9]/)) {
                    200: 	&Apache::lonxml::error("Only _ a-z A-Z and 0-9 are allowed in the name to a labelgroup, and the first character can not be a number.<br />");
                    201:     }
1.47      albertel  202:     if ($target eq 'web' || $target eq 'tex' ||
                    203: 	$target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
                    204: 	$Apache::randomlabel::groupname=$name;
                    205: 	$Apache::randomlabel::type=$type;
                    206: 	@Apache::randomlabel::xcoord = ();
                    207: 	@Apache::randomlabel::ycoord = ();
                    208: 	@Apache::randomlabel::value = ();
                    209: 	@Apache::randomlabel::label_arr  = ();
                    210: 	@Apache::randomlabel::decription  = ();
                    211:     } elsif ($target eq 'edit') {
                    212: 	$result.=&Apache::edit::tag_start($target,$token);
                    213: 	$result.=&Apache::edit::text_arg('Name:','name',$token).
                    214: 	    &Apache::edit::select_arg('Type:','type',['text','image'],$token).
                    215: 	    &Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    216:     } elsif ($target eq 'modified') {
                    217: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    218: 						     $safeeval,'name','type');
                    219: 	if ($constructtag) {
                    220: 	    $result = &Apache::edit::rebuild_tag($token);
                    221: 	    $result.=&Apache::edit::handle_insert();
                    222: 	}
1.4       albertel  223:     }
1.47      albertel  224:     return $result;
1.1       tsai      225: }
                    226: 
1.5       albertel  227: sub add_vars {
1.47      albertel  228:     my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_;
                    229:     my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
                    230:     my $out=Apache::run::run($code,$safeeval);
                    231:     if ($value) {
                    232: 	$code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
                    233: 	$out=Apache::run::run($code,$safeeval);
                    234: 	$code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
                    235: 	$out=Apache::run::run($code,$safeeval);
                    236:     }
                    237:     if ($image) {
                    238: 	my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';";
                    239: 	my $out=Apache::run::run($code,$safeeval);
                    240:     }
                    241:     $code = '${'.$name."}{'numlocations'}='".($order+1)."';";
1.5       albertel  242:     $out=Apache::run::run($code,$safeeval);
1.4       albertel  243: }
1.5       albertel  244: 
1.1       tsai      245: # begin to assign labels to locations
                    246: sub end_labelgroup {
1.47      albertel  247:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    248:     my $gname = $Apache::randomlabel::groupname;
                    249:     my $type  = $Apache::randomlabel::type;
                    250:     my $result='';
                    251:     if ($target eq 'web' || $target eq 'answer' || $target eq 'grade' ||
                    252: 	$target eq 'analyze') {
                    253: 	my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
                    254: 	&Apache::structuretags::shuffle(\@idx_arr);
                    255: 	for(0 .. $#Apache::randomlabel::label_arr) {
                    256: 	    my $str;
                    257: 	    my $xstr;
                    258: 	    my $ystr;
                    259: 	    my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
                    260: 	    my $x = $Apache::randomlabel::xcoord[$_];
                    261: 	    my $y = $Apache::randomlabel::ycoord[$_];
                    262: 	    my $value = $Apache::randomlabel::value[$_];
                    263: 	    if( $type eq 'text') {
                    264: 		&add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval);
                    265: 		$str = 'LB'.$Apache::randomlabel::tlabel_cnt;
                    266: 		$xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
                    267: 		$ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
                    268: 		$Apache::randomlabel::tlabel_cnt += 1;
                    269: 	    } elsif ( $type eq 'image') {
                    270: 		&add_vars($gname,$_,
                    271: 			  $Apache::randomlabel::description[$idx_arr[$_]],
                    272: 			  $idx_arr[$_],$value,$label,$safeeval);
                    273: 		$str = 'IMG'.$Apache::randomlabel::ilabel_cnt;
                    274: 		$xstr = 'IX'.$Apache::randomlabel::ilabel_cnt;
                    275: 		$ystr = 'IY'.$Apache::randomlabel::ilabel_cnt;
                    276: 		$Apache::randomlabel::ilabel_cnt += 1;
                    277: 	    } else {
                    278: 		&Apache::lonxml::error('Unknown type of label :'.$type.':');
                    279: 	    }
                    280: 	    if ($target eq 'web') {
1.53    ! albertel  281: 		$args{"cgi.$cgi_id.$str"} =&Apache::lonnet::escape($label);
        !           282: 		$args{"cgi.$cgi_id.$xstr"}=$x;
        !           283: 		$args{"cgi.$cgi_id.$ystr"}=$y;
1.47      albertel  284: 	    }
                    285: 	}
                    286:     } elsif ($target eq 'tex') {
                    287: 	my $WX1=0; #  Web x-coord. of upper left corner (ULC)
                    288: 	my $WY1=0; #  Web y-coord. of (ULC)
                    289: 	my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
                    290: 	my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
1.50      sakharuk  291: 	my $texwidth=&adjust_textwidth(&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2,1));
1.49      albertel  292: 	if (!$texwidth) { $texwidth=90; }
1.47      albertel  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];
                    312: 	    my $value = $Apache::randomlabel::value[$i];
                    313: 	    #x latex coordinate
                    314: 	    my $tcX=($x)*($texwidth/$wwidth);
                    315: 	    #y latex coordinate
                    316:             #      my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 );
                    317: 	    my $tcY=$TY1-$y*($TY1/$wheight);
                    318: 	    $tcX=sprintf('%.2f',$tcX);
                    319: 	    $tcY=sprintf('%.2f',$tcY);
                    320: 	    $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
                    321: 	    if( $type eq 'text') {
                    322: 		&add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval);
                    323: 	    } elsif ( $type eq 'image') {
                    324: 		&add_vars($gname,$i,
                    325: 			  $Apache::randomlabel::description[$idx_arr[$i]],
                    326: 			  $idx_arr[$i],$value,$label,$safeeval);
                    327: 	    } else {
                    328: 		&Apache::lonxml::error('Unknown type of label :'.$type.':');
                    329: 	    }
                    330: 	}
                    331:     } elsif ($target eq 'edit') {
                    332: 	$result.=&Apache::edit::end_table;
1.3       tsai      333:     }
1.47      albertel  334:     return $result;
1.1       tsai      335: }
                    336: 
1.5       albertel  337: # <location x="123" y="456" value="some value"/>
1.1       tsai      338: sub start_location {
1.47      albertel  339:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    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);
                    342:     my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
                    343:     my $result='';
                    344:     push(@Apache::randomlabel::xcoord,$x);
                    345:     push(@Apache::randomlabel::ycoord,$y);
                    346:     push(@Apache::randomlabel::value,$value);
                    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',$token,4).
                    351: 	    &Apache::edit::entercoords('x','y','attribute','width','height').'&nbsp;&nbsp;&nbsp;'.
                    352: 	    &Apache::edit::text_arg('Value:','value',$token).
                    353: 	    &Apache::edit::end_row();
                    354: 	$result.=&Apache::edit::end_table;
                    355:     } elsif ($target eq 'modified') {
                    356: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    357: 						    $safeeval,'x','y','value');
                    358: 	if ($constructtag) {
                    359: 	    $result = &Apache::edit::rebuild_tag($token);
                    360: 	    $result.=&Apache::edit::handle_insert();
                    361: 	}
1.4       albertel  362:     }
1.47      albertel  363:     return $result;
1.1       tsai      364: }
                    365: 
                    366: sub end_location {
1.47      albertel  367:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    368:     my @result;
                    369:     if ($target eq 'edit') { @result=('','no') }
                    370:     return @result;
1.1       tsai      371: }
                    372: 
1.2       tsai      373: # <label>$var_abc</label>
1.1       tsai      374: sub start_label {
1.47      albertel  375:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    376:     my $result='';
                    377:     my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
                    378:     if ($target eq 'web' || $target eq 'tex' ||
                    379: 	$target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
                    380: 	my $ltext=&Apache::lonxml::get_all_text("/label",$parser);
                    381: 	$ltext=&Apache::run::evaluate($ltext,$safeeval,$$parstack[-1]);
                    382: 	if ($type eq 'image') {
                    383: 	    &Apache::lonxml::debug("Turning $ltext, $Apache::lonxml::pwd[-1]");
                    384: 	    $ltext=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],
                    385: 						 $ltext);
                    386: 	    &Apache::lonxml::debug("into $ltext");
                    387: 	    my $description = &Apache::lonxml::get_param('description',
                    388: 							 $parstack,$safeeval);
                    389: 	    push(@Apache::randomlabel::description,$description);
                    390: 	}
                    391: 	push(@Apache::randomlabel::label_arr,$ltext);
                    392:     } elsif ($target eq 'edit') {
                    393: 	$result.=&Apache::edit::tag_start($target,$token,"$type Label");
                    394: 	my $text=&Apache::lonxml::get_all_text("/label",$parser);
                    395: 	if ($type eq 'image') {
                    396: 	    $result.=&Apache::edit::end_row().
                    397: 		&Apache::edit::start_spanning_row();
                    398: 	    $result.=&Apache::edit::text_arg('Description:','description',
                    399: 					     $token);
                    400: 	}
                    401: 	if ($type eq 'text') { $result.="Label Text:"; }
                    402: 	if ($type eq 'image') { $result.="Path to image:&nbsp;"; }
                    403: 	$result.=&Apache::edit::editline('',$text,'',50).
                    404: 	    &Apache::edit::end_table();
                    405:     } elsif ($target eq 'modified') {
                    406: 	$result = '<label>';
                    407: 	if ($type eq 'image') {
                    408: 	    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    409: 							 $safeeval,
                    410: 							 'description');
                    411: 	    if ($constructtag) {
                    412: 		$result = &Apache::edit::rebuild_tag($token);
                    413: 	    } else {
                    414: 		$result = $token->[4];
                    415: 	    }
                    416: 	}
1.52      albertel  417: 	$result.=&Apache::edit::modifiedfield("/label",$parser);
1.26      albertel  418:     }
1.47      albertel  419:     return $result;
1.1       tsai      420: }
                    421: 
                    422: sub end_label {
1.47      albertel  423:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    424:     my @result;
                    425:     if ($target eq 'edit') { @result=('','no') }
                    426:     return @result;
1.1       tsai      427: }
                    428: 
                    429: 1;
                    430: __END__
                    431:  

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