Annotation of loncom/interface/lonpreferences.pm, revision 1.89

1.1       www         1: # The LearningOnline Network
                      2: # Preferences
                      3: #
1.89    ! albertel    4: # $Id: lonpreferences.pm,v 1.88 2006/06/14 18:56:58 albertel Exp $
1.2       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       matthew    28: # This package uses the "londes.js" javascript code. 
                     29: #
                     30: # TODOs that have to be completed:
                     31: #    interface with lonnet to change the password
                     32:  
1.1       www        33: package Apache::lonpreferences;
                     34: 
                     35: use strict;
1.86      albertel   36: use LONCAPA;
1.1       www        37: use Apache::Constants qw(:common);
1.3       matthew    38: use Apache::File;
                     39: use Crypt::DES;
                     40: use DynaLoader; # for Crypt::DES version
1.4       matthew    41: use Apache::loncommon();
1.23      matthew    42: use Apache::lonhtmlcommon();
1.32      www        43: use Apache::lonlocal;
1.59      albertel   44: use Apache::lonnet;
1.3       matthew    45: 
                     46: #
                     47: # Write lonnet::passwd to do the call below.
                     48: # Use:
                     49: #   my $answer=reply("encrypt:passwd:$udom:$uname:$upass",$tryserver);
                     50: #
                     51: ##################################################
                     52: #          password associated functions         #
                     53: ##################################################
                     54: sub des_keys {
1.4       matthew    55:     # Make a new key for DES encryption.
1.36      www        56:     # Each key has two parts which are returned separately.
1.4       matthew    57:     # Please note:  Each key must be passed through the &hex function
                     58:     # before it is output to the web browser.  The hex versions cannot
                     59:     # be used to decrypt.
1.3       matthew    60:     my @hexstr=('0','1','2','3','4','5','6','7',
                     61:                 '8','9','a','b','c','d','e','f');
                     62:     my $lkey='';
                     63:     for (0..7) {
                     64:         $lkey.=$hexstr[rand(15)];
                     65:     }
                     66:     my $ukey='';
                     67:     for (0..7) {
                     68:         $ukey.=$hexstr[rand(15)];
                     69:     }
                     70:     return ($lkey,$ukey);
                     71: }
                     72: 
                     73: sub des_decrypt {
                     74:     my ($key,$cyphertext) = @_;
                     75:     my $keybin=pack("H16",$key);
                     76:     my $cypher;
                     77:     if ($Crypt::DES::VERSION>=2.03) {
                     78:         $cypher=new Crypt::DES $keybin;
                     79:     } else {
                     80:         $cypher=new DES $keybin;
                     81:     }
                     82:     my $plaintext=
                     83: 	$cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,0,16))));
                     84:     $plaintext.=
                     85: 	$cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,16,16))));
1.4       matthew    86:     $plaintext=substr($plaintext,1,ord(substr($plaintext,0,1)) );
1.3       matthew    87:     return $plaintext;
                     88: }
                     89: 
1.4       matthew    90: ################################################################
                     91: #                       Handler subroutines                    #
                     92: ################################################################
1.9       matthew    93: 
                     94: ################################################################
1.28      www        95: #         Language Change Subroutines                          #
                     96: ################################################################
1.44      www        97: 
                     98: sub wysiwygchanger {
                     99:     my $r = shift;
                    100:     my %userenv = &Apache::lonnet::get
                    101:         ('environment',['wysiwygeditor']);
1.78      albertel  102:     my $onselect='checked="checked"';
1.44      www       103:     my $offselect='';
1.77      albertel  104:     if ($userenv{'wysiwygeditor'} eq 'on') {
1.44      www       105: 	$onselect='';
1.78      albertel  106: 	$offselect='checked="checked"';
1.44      www       107:     }
                    108:     my $switchoff=&mt('Disable WYSIWYG editor');
                    109:     my $switchon=&mt('Enable WYSIWYG editor');
                    110:     $r->print(<<ENDLSCREEN);
1.88      albertel  111: <form name="prefs" action="/adm/preferences" method="post">
1.44      www       112: <input type="hidden" name="action" value="set_wysiwyg" />
                    113: <br />
1.65      albertel  114: <label><input type="radio" name="wysiwyg" value="off" $onselect /> $switchoff</label><br />
                    115: <label><input type="radio" name="wysiwyg" value="on" $offselect /> $switchon</label>
1.44      www       116: ENDLSCREEN
                    117:     $r->print('<br /><input type="submit" value="'.&mt('Change').'" />');
                    118: }
                    119: 
                    120: 
                    121: sub verify_and_change_wysiwyg {
                    122:     my $r = shift;
1.59      albertel  123:     my $newsetting=$env{'form.wysiwyg'};
1.44      www       124:     &Apache::lonnet::put('environment',{'wysiwygeditor' => $newsetting});
                    125:     &Apache::lonnet::appenv('environment.wysiwygeditor' => $newsetting);
                    126:     $r->print('<p>'.&mt('Setting WYSIWYG editor to:').' '.&mt($newsetting).'</p>');
                    127: }
                    128: 
                    129: ################################################################
                    130: #         Language Change Subroutines                          #
                    131: ################################################################
1.28      www       132: sub languagechanger {
                    133:     my $r = shift;
1.59      albertel  134:     my $user       = $env{'user.name'};
                    135:     my $domain     = $env{'user.domain'};
1.28      www       136:     my %userenv = &Apache::lonnet::get
1.32      www       137:         ('environment',['languages']);
1.29      www       138:     my $language=$userenv{'languages'};
1.32      www       139: 
1.33      www       140:     my $pref=&mt('Preferred language');
                    141:     my %langchoices=('' => 'No language preference');
                    142:     foreach (&Apache::loncommon::languageids()) {
                    143: 	if (&Apache::loncommon::supportedlanguagecode($_)) {
                    144: 	    $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
                    145: 	               = &Apache::loncommon::plainlanguagedescription($_);
                    146: 	}
                    147:     }
                    148:     my $selectionbox=&Apache::loncommon::select_form($language,'language',
                    149: 						     %langchoices);
1.28      www       150:     $r->print(<<ENDLSCREEN);
1.88      albertel  151: <form name="prefs" action="/adm/preferences" method="post">
1.28      www       152: <input type="hidden" name="action" value="verify_and_change_languages" />
1.33      www       153: <br />$pref: $selectionbox
1.28      www       154: ENDLSCREEN
1.35      matthew   155:     $r->print('<br /><input type="submit" value="'.&mt('Change').'" />');
1.28      www       156: }
                    157: 
                    158: 
                    159: sub verify_and_change_languages {
                    160:     my $r = shift;
1.59      albertel  161:     my $user       = $env{'user.name'};
                    162:     my $domain     = $env{'user.domain'};
1.28      www       163: # Screenname
1.59      albertel  164:     my $newlanguage  = $env{'form.language'};
1.28      www       165:     $newlanguage=~s/[^\-\w]//g;
                    166:     my $message='';
                    167:     if ($newlanguage) {
1.29      www       168:         &Apache::lonnet::put('environment',{'languages' => $newlanguage});
                    169:         &Apache::lonnet::appenv('environment.languages' => $newlanguage);
                    170:         $message='Set new preferred languages to '.$newlanguage;
1.28      www       171:     } else {
1.29      www       172:         &Apache::lonnet::del('environment',['languages']);
                    173:         &Apache::lonnet::delenv('environment\.languages');
1.28      www       174:         $message='Reset preferred language';
                    175:     }
                    176:     $r->print(<<ENDVCSCREEN);
                    177: $message
                    178: ENDVCSCREEN
                    179: }
                    180: 
1.50      albertel  181: ################################################################
1.54      albertel  182: #         Tex Engine Change Subroutines                        #
                    183: ################################################################
                    184: sub texenginechanger {
                    185:     my $r = shift;
1.59      albertel  186:     my $user       = $env{'user.name'};
                    187:     my $domain     = $env{'user.domain'};
1.54      albertel  188:     my %userenv = &Apache::lonnet::get('environment',['texengine']);
                    189:     my $texengine=$userenv{'texengine'};
                    190: 
                    191:     my $pref=&mt('Preferred method to display Math');
1.69      albertel  192:     my %mathchoices=('' => 'Default',
1.54      albertel  193: 		     'tth' => 'TeX to HTML',
1.64      albertel  194: 		     #'ttm' => 'TeX to MathML',
1.54      albertel  195: 		     'jsMath' => 'jsMath',
1.57      albertel  196: 		     'mimetex' => 'Convert to Images'
1.54      albertel  197:                      );
                    198:     my $selectionbox=&Apache::loncommon::select_form($texengine,'texengine',
                    199: 						     %mathchoices);
1.67      albertel  200:     my $jsMath_start=&Apache::lontexconvert::jsMath_header();
1.54      albertel  201:     my $change=&mt('Change');
                    202:     $r->print(<<ENDLSCREEN);
1.67      albertel  203: <br />
                    204: 
1.88      albertel  205: <form name="prefs" action="/adm/preferences" method="post">
1.54      albertel  206: <input type="hidden" name="action" value="verify_and_change_texengine" />
                    207: <p>$pref: $selectionbox</p>
                    208: <p><input type="submit" value="$change" /></p>
                    209: </form>
                    210: Examples:
1.67      albertel  211: <p> TeX to HTML <br /> 
1.79      albertel  212: <iframe src="/res/adm/pages/math_example.tex?inhibitmenu=yes&texengine=tth" width="400" hieght="200"></iframe>
1.67      albertel  213: </p>
1.54      albertel  214: <p>jsMath <br /> 
1.67      albertel  215: $jsMath_start
1.57      albertel  216: <script type="text/javascript">
1.54      albertel  217: if (jsMath.nofonts == 1) {
                    218:     document.writeln
                    219:         ('<center><div style="padding: 10; border-style: solid; border-width:3;'
                    220: 	 +' border-color: #DD0000; background-color: #FFF8F8; width: 75%; text-align: left">'
                    221: 	 +'<small><font color="#AA0000"><b>Warning:</b> '
                    222: 	 +'It looks like you don\\\'t have the TeX math fonts installed. '
                    223: 	 +'The jsMath example on this page may not look right without them. '
                    224: 	 +'The <a href="http://www.math.union.edu/locate/jsMath/" target="_blank"> '
                    225: 	 +'jsMath Home Page</a> has information on how to download the '
                    226: 	 +'needed fonts.  In the meantime, jsMath will do the best it can '
                    227: 	 +'with the fonts you have, but it may not be pretty and some equations '
                    228: 	 +'may not be rendered correctly. '
                    229: 	 +'</font></small></div></center>');
                    230: }
                    231: </script>
1.79      albertel  232: <iframe src="/res/adm/pages/math_example.tex?inhibitmenu=yes&texengine=jsMath" width="400" hieght="200"></iframe>
1.54      albertel  233: 
1.67      albertel  234: </p>
                    235: <p> Convert to Images <br />
                    236: <br />
1.79      albertel  237: <iframe src="/res/adm/pages/math_example.tex?inhibitmenu=yes&texengine=mimetex" width="400" hieght="200"></iframe>
1.67      albertel  238: </p>
1.54      albertel  239: ENDLSCREEN
1.59      albertel  240:     if ($env{'environment.texengine'} ne 'jsMath') {
1.55      albertel  241: 	$r->print('<script type="text/javascript">jsMath.Process()</script>');
                    242:     }
1.54      albertel  243: }
                    244: 
                    245: 
                    246: sub verify_and_change_texengine {
                    247:     my $r = shift;
1.59      albertel  248:     my $user       = $env{'user.name'};
                    249:     my $domain     = $env{'user.domain'};
1.54      albertel  250: # Screenname
1.59      albertel  251:     my $newtexengine  = $env{'form.texengine'};
1.54      albertel  252:     $newtexengine=~s/[^\-\w]//g;
1.56      albertel  253:     if ($newtexengine eq 'ttm') {
                    254: 	&Apache::lonnet::appenv('browser.mathml' => 1);
                    255:     } else {
1.59      albertel  256: 	if ($env{'environment.texengine'} eq 'ttm') {
1.56      albertel  257: 	    &Apache::lonnet::appenv('browser.mathml' => 0);
                    258: 	}
                    259:     }
1.54      albertel  260:     my $message='';
                    261:     if ($newtexengine) {
                    262:         &Apache::lonnet::put('environment',{'texengine' => $newtexengine});
                    263:         &Apache::lonnet::appenv('environment.texengine' => $newtexengine);
                    264:         $message='Set new preferred math display to '.$newtexengine;
                    265:     } else {
                    266:         &Apache::lonnet::del('environment',['texengine']);
                    267:         &Apache::lonnet::delenv('environment\.texengine');
                    268:         $message='Reset preferred math display.';
                    269:     }
1.56      albertel  270: 
                    271: 
1.54      albertel  272:     $r->print(<<ENDVCSCREEN);
                    273: $message
                    274: ENDVCSCREEN
                    275: }
                    276: 
                    277: ################################################################
1.50      albertel  278: #         Roles Page Preference Change Subroutines         #
                    279: ################################################################
                    280: sub rolesprefchanger {
                    281:     my $r = shift;
1.59      albertel  282:     my $user       = $env{'user.name'};
                    283:     my $domain     = $env{'user.domain'};
1.50      albertel  284:     my %userenv = &Apache::lonnet::get
                    285:         ('environment',['recentroles','recentrolesn']);
                    286:     my $hotlist_flag=$userenv{'recentroles'};
                    287:     my $hotlist_n=$userenv{'recentrolesn'};
                    288:     my $checked;
                    289:     if ($hotlist_flag) {
                    290: 	$checked = 'checked="checked"';
                    291:     }
                    292:     
                    293:     if (!$hotlist_n) { $hotlist_n=3; }
                    294:     my $options;
                    295:     for (my $i=1; $i<10; $i++) {
                    296: 	my $select;
                    297: 	if ($hotlist_n == $i) { $select = 'selected="selected"'; }
                    298: 	$options .= "<option $select>$i</option>\n";
                    299:     }
                    300: 
1.89    ! albertel  301: # Get list of recent roles and display with checkbox in front
        !           302:     my $roles_check_list = '';
        !           303:     my $role_key='';
        !           304:     if ($env{'environment.recentroles'}) {
        !           305:         my %recent_roles =
        !           306:                &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
        !           307:         
        !           308:         $roles_check_list .=
        !           309: 	    &Apache::loncommon::start_data_table().
        !           310: 	    &Apache::loncommon::start_data_table_header_row().
        !           311: 	    "<th>".&mt('Freeze Role')."</th>".
        !           312: 	    "<th>".&mt('Role')."</td>".
        !           313: 	    &Apache::loncommon::end_data_table_header_row().
        !           314: 	    "\n";
        !           315: 	my $count;
        !           316:         foreach $role_key (sort(keys(%recent_roles))) {
        !           317:             my $checked = "";
        !           318:             my $value = $recent_roles{$role_key};
        !           319:             if ($value eq 'role_frozen') {
        !           320:                 $checked = "checked=\"checked\"";
        !           321:             }
        !           322: # get course information
        !           323:             my ($role,$rest) = split(/\./, $role_key);
        !           324:             my $trole = &Apache::lonnet::plaintext($role);
        !           325:             my ($tdomain,$other,$tsection)=
        !           326:                     split(/\//,Apache::lonnet::declutter($rest));
        !           327:             my $tother = '-';
        !           328:             if ($role =~ /cc|st|in|ta/ ) {
        !           329:                my %newhash=&Apache::lonnet::coursedescription($tdomain."_".$other);
        !           330:                $tother = " - ".$newhash{'description'};
        !           331:             } elsif ($role =~ /dc/) {
        !           332:                $tother = "";
        !           333:             } else {
        !           334:                $tother = " - $other";
        !           335:             }
        !           336: 
        !           337:             my $section="";
        !           338: 	    if ($tsection) {
        !           339:                $section = " - Section/Group: $tsection";
        !           340:             }
        !           341: 	    $count++;
        !           342:             $roles_check_list .=
        !           343: 		&Apache::loncommon::start_data_table_row().
        !           344: 		'<td class="LC_table_cell_checkbox">'.
        !           345: 		"<input type=\"checkbox\" $checked name=\"freezeroles\"".
        !           346: 		" id=\"freezeroles$count\" value=\"$role_key\" /></td>".
        !           347: 		"<td><label for=\"freezeroles$count\">".
        !           348: 		"$trole - $tdomain $tother $section</label></td>".
        !           349: 		&Apache::loncommon::end_data_table_row(). "\n";
        !           350:         }
        !           351:         $roles_check_list .= "</table>\n";
        !           352:     }
        !           353: 
        !           354:     $r->print('
        !           355: <p>'.&mt('Some LON-CAPA users have a long list of roles. The Recent Roles Hotlist feature keeps track of the last N roles which have been visited and places a table of these at the top of the roles page. People with very few roles should leave this feature disabled.').'
1.50      albertel  356: </p>
1.89    ! albertel  357: <form name="prefs" action="/adm/preferences" method="POST">
1.50      albertel  358: <input type="hidden" name="action" value="verify_and_change_rolespref" />
1.89    ! albertel  359: <br /><label>'.&mt('Enable Recent Roles Hotlist:').'
        !           360: <input type="checkbox" '.$checked.' name="recentroles" value="true" /></label>
        !           361: <br />'.&mt('Number of roles in Hotlist:').'
1.50      albertel  362: <select name="recentrolesn" size="1">
1.89    ! albertel  363: '.$options.'
1.50      albertel  364: </select>
1.89    ! albertel  365: <p>'.&mt('This list below can be used to <q>freeze</q> roles on your screen. Those marked as frozen will not be removed from the list, even if they have not been used recently.').'
        !           366: </p>
        !           367: '.$roles_check_list.'
1.50      albertel  368: <br />
1.89    ! albertel  369: <input type="submit" value="'.&mt('Change').'" />
        !           370: </form>');
1.50      albertel  371: }
                    372: 
                    373: sub verify_and_change_rolespref {
                    374:     my $r = shift;
1.59      albertel  375:     my $user       = $env{'user.name'};
                    376:     my $domain     = $env{'user.domain'};
1.50      albertel  377: # Recent Roles Hotlist Flag
1.59      albertel  378:     my $hotlist_flag  = $env{'form.recentroles'};
                    379:     my $hotlist_n  = $env{'form.recentrolesn'};
1.89    ! albertel  380:     my $message='<hr />';
1.50      albertel  381:     if ($hotlist_flag) {
                    382:         &Apache::lonnet::put('environment',{'recentroles' => $hotlist_flag});
                    383:         &Apache::lonnet::appenv('environment.recentroles' => $hotlist_flag);
1.89    ! albertel  384:         $message=&mt('Recent Roles Hotlist is Enabled');
1.50      albertel  385:     } else {
                    386:         &Apache::lonnet::del('environment',['recentroles']);
                    387:         &Apache::lonnet::delenv('environment\.recentroles');
1.89    ! albertel  388:         $message=&mt('Recent Roles Hotlist is Disabled');
1.50      albertel  389:     }
                    390:     if ($hotlist_n) {
                    391:         &Apache::lonnet::put('environment',{'recentrolesn' => $hotlist_n});
                    392:         &Apache::lonnet::appenv('environment.recentrolesn' => $hotlist_n);
                    393:         if ($hotlist_flag) {
1.89    ! albertel  394:             $message.="<br />".&mt('Display [_1]$hotlist_n Most Recent Roles',
        !           395: 				   $hotlist_n)."\n";
        !           396:         }
        !           397:     }
        !           398: 
        !           399: # Get list of froze roles and list of recent roles
        !           400:     my @freeze_list = &Apache::loncommon::get_env_multiple('form.freezeroles');
        !           401:     my %freeze = ();
        !           402:     foreach my $key (@freeze_list) {
        !           403:         $freeze{$key}='role_frozen';
        !           404:     }
        !           405:     
        !           406:     my %recent_roles =
        !           407:         &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
        !           408: 
        !           409: # Unset any roles that were previously frozen but aren't in list
        !           410: 
        !           411:     foreach my $role_key (sort(keys(%recent_roles))) {
        !           412:         if (($recent_roles{$role_key} eq 'role_frozen') &&
        !           413:                      (!exists($freeze{$role_key}))) {
        !           414: 	    $message .= "<br />".&mt('Unfreezing Role: [_1]',$role_key)."\n";
        !           415: 	    &Apache::lonhtmlcommon::store_recent('roles',$role_key,' ');
        !           416:         }
        !           417:     }
        !           418: 
        !           419: # Freeze selected roles
        !           420:     foreach my $role_key (@freeze_list) {
        !           421:         $message .= "<br />".&mt('Freezing Role: [_1]',$role_key)."\n";
        !           422:         if ($recent_roles{$role_key} ne 'role_frozen') {
        !           423:              &Apache::lonhtmlcommon::store_recent('roles',
        !           424:                                           $role_key,'role_frozen');
1.50      albertel  425:         }
                    426:     }
1.89    ! albertel  427:     $message .= "<hr /><br />\n";
1.50      albertel  428: 
                    429:     $r->print(<<ENDRPSCREEN);
                    430: $message
                    431: ENDRPSCREEN
                    432: }
                    433: 
                    434: 
1.28      www       435: 
                    436: ################################################################
1.9       matthew   437: #         Anonymous Discussion Name Change Subroutines         #
                    438: ################################################################
1.5       www       439: sub screennamechanger {
                    440:     my $r = shift;
1.59      albertel  441:     my $user       = $env{'user.name'};
                    442:     my $domain     = $env{'user.domain'};
1.14      www       443:     my %userenv = &Apache::lonnet::get
                    444:         ('environment',['screenname','nickname']);
1.6       www       445:     my $screenname=$userenv{'screenname'};
1.14      www       446:     my $nickname=$userenv{'nickname'};
1.5       www       447:     $r->print(<<ENDSCREEN);
1.88      albertel  448: <form name="prefs" action="/adm/preferences" method="post">
1.6       www       449: <input type="hidden" name="action" value="verify_and_change_screenname" />
1.14      www       450: <br />New screenname (shown if you post anonymously):
1.6       www       451: <input type="text" size="20" value="$screenname" name="screenname" />
1.14      www       452: <br />New nickname (shown if you post non-anonymously):
                    453: <input type="text" size="20" value="$nickname" name="nickname" />
1.6       www       454: <input type="submit" value="Change" />
                    455: </form>
1.5       www       456: ENDSCREEN
                    457: }
1.6       www       458: 
                    459: sub verify_and_change_screenname {
                    460:     my $r = shift;
1.59      albertel  461:     my $user       = $env{'user.name'};
                    462:     my $domain     = $env{'user.domain'};
1.14      www       463: # Screenname
1.59      albertel  464:     my $newscreen  = $env{'form.screenname'};
1.14      www       465:     $newscreen=~s/[^ \w]//g;
1.6       www       466:     my $message='';
                    467:     if ($newscreen) {
1.7       www       468:         &Apache::lonnet::put('environment',{'screenname' => $newscreen});
                    469:         &Apache::lonnet::appenv('environment.screenname' => $newscreen);
1.6       www       470:         $message='Set new screenname to '.$newscreen;
                    471:     } else {
                    472:         &Apache::lonnet::del('environment',['screenname']);
1.7       www       473:         &Apache::lonnet::delenv('environment\.screenname');
1.6       www       474:         $message='Reset screenname';
                    475:     }
1.14      www       476: # Nickname
                    477:     $message.='<br />';
1.59      albertel  478:     $newscreen  = $env{'form.nickname'};
1.14      www       479:     $newscreen=~s/[^ \w]//g;
                    480:     if ($newscreen) {
                    481:         &Apache::lonnet::put('environment',{'nickname' => $newscreen});
                    482:         &Apache::lonnet::appenv('environment.nickname' => $newscreen);
                    483:         $message.='Set new nickname to '.$newscreen;
                    484:     } else {
                    485:         &Apache::lonnet::del('environment',['nickname']);
                    486:         &Apache::lonnet::delenv('environment\.nickname');
                    487:         $message.='Reset nickname';
                    488:     }
1.68      www       489:     &Apache::lonnet::devalidate_cache_new('namescache',$user.':'.$domain);
1.6       www       490:     $r->print(<<ENDVCSCREEN);
                    491: $message
                    492: ENDVCSCREEN
1.20      www       493: }
                    494: 
                    495: ################################################################
                    496: #         Message Forward                                      #
                    497: ################################################################
                    498: 
                    499: sub msgforwardchanger {
                    500:     my $r = shift;
1.59      albertel  501:     my $user       = $env{'user.name'};
                    502:     my $domain     = $env{'user.domain'};
1.26      www       503:     my %userenv = &Apache::lonnet::get('environment',['msgforward','notification','critnotification']);
1.20      www       504:     my $msgforward=$userenv{'msgforward'};
                    505:     my $notification=$userenv{'notification'};
                    506:     my $critnotification=$userenv{'critnotification'};
1.25      bowersj2  507:     my $forwardingHelp = Apache::loncommon::help_open_topic("Prefs_Forwarding",
                    508: 							    "What are forwarding ".
                    509: 							    "and notification ".
                    510: 							    "addresses");
1.27      bowersj2  511:     my $criticalMessageHelp = Apache::loncommon::help_open_topic("Course_Critical_Message",
                    512: 								 "What are critical messages");
                    513: 
1.20      www       514:     $r->print(<<ENDMSG);
1.25      bowersj2  515: $forwardingHelp <br />
1.88      albertel  516: <form name="prefs" action="/adm/preferences" method="post">
1.20      www       517: <input type="hidden" name="action" value="verify_and_change_msgforward" />
                    518: New Forwarding Address(es) (<tt>user:domain,user:domain,...</tt>):
                    519: <input type="text" size="40" value="$msgforward" name="msgforward" /><hr />
                    520: New Message Notification Email Address(es) (<tt>joe\@doe.com,jane\@doe.edu,...</tt>):
                    521: <input type="text" size="40" value="$notification" name="notification" /><hr />
                    522: New Critical Message Notification Email Address(es) (<tt>joe\@doe.com,jane\@doe.edu,...</tt>):
1.27      bowersj2  523: <input type="text" size="40" value="$critnotification" name="critnotification" />$criticalMessageHelp<hr />
1.20      www       524: <input type="submit" value="Change" />
                    525: </form>
                    526: ENDMSG
                    527: }
                    528: 
                    529: sub verify_and_change_msgforward {
                    530:     my $r = shift;
1.59      albertel  531:     my $user       = $env{'user.name'};
                    532:     my $domain     = $env{'user.domain'};
1.20      www       533:     my $newscreen  = '';
                    534:     my $message='';
1.59      albertel  535:     foreach (split(/\,/,$env{'form.msgforward'})) {
1.20      www       536: 	my ($msuser,$msdomain)=split(/[\@\:]/,$_);
                    537:         $msuser=~s/\W//g;
                    538:         $msdomain=~s/\W//g;
                    539:         if (($msuser) && ($msdomain)) {
                    540: 	    if (&Apache::lonnet::homeserver($msuser,$msdomain) ne 'no_host') {
                    541:                $newscreen.=$msuser.':'.$msdomain.',';
                    542: 	   } else {
                    543:                $message.='No such user: '.$msuser.':'.$msdomain.'<br>';
                    544:            }
                    545:         }
                    546:     }
                    547:     $newscreen=~s/\,$//;
                    548:     if ($newscreen) {
                    549:         &Apache::lonnet::put('environment',{'msgforward' => $newscreen});
                    550:         &Apache::lonnet::appenv('environment.msgforward' => $newscreen);
                    551:         $message.='Set new message forwarding to '.$newscreen.'<br />';
                    552:     } else {
                    553:         &Apache::lonnet::del('environment',['msgforward']);
                    554:         &Apache::lonnet::delenv('environment\.msgforward');
                    555:         $message.='Reset message forwarding<br />';
                    556:     }
1.59      albertel  557:     my $notification=$env{'form.notification'};
1.20      www       558:     $notification=~s/\s//gs;
                    559:     if ($notification) {
                    560:         &Apache::lonnet::put('environment',{'notification' => $notification});
                    561:         &Apache::lonnet::appenv('environment.notification' => $notification);
                    562:         $message.='Set message notification address to '.$notification.'<br />';
                    563:     } else {
                    564:         &Apache::lonnet::del('environment',['notification']);
                    565:         &Apache::lonnet::delenv('environment\.notification');
                    566:         $message.='Reset message notification<br />';
                    567:     }
1.59      albertel  568:     my $critnotification=$env{'form.critnotification'};
1.20      www       569:     $critnotification=~s/\s//gs;
                    570:     if ($critnotification) {
                    571:         &Apache::lonnet::put('environment',{'critnotification' => $critnotification});
                    572:         &Apache::lonnet::appenv('environment.critnotification' => $critnotification);
                    573:         $message.='Set critical message notification address to '.$critnotification;
                    574:     } else {
                    575:         &Apache::lonnet::del('environment',['critnotification']);
                    576:         &Apache::lonnet::delenv('environment\.critnotification');
                    577:         $message.='Reset critical message notification<br />';
                    578:     }
                    579:     $r->print(<<ENDVCMSG);
                    580: $message
                    581: ENDVCMSG
1.6       www       582: }
                    583: 
1.12      www       584: ################################################################
1.19      www       585: #         Colors                                               #
1.12      www       586: ################################################################
                    587: 
1.19      www       588: sub colorschanger {
1.12      www       589:     my $r = shift;
1.19      www       590: # figure out colors
1.80      albertel  591:     my $function=&Apache::loncommon::get_users_function();
1.19      www       592:     my $domain=&Apache::loncommon::determinedomain();
                    593:     my %colortypes=('pgbg'  => 'Page Background',
                    594:                     'tabbg' => 'Header Background',
                    595:                     'sidebg'=> 'Header Border',
                    596:                     'font'  => 'Font',
                    597:                     'link'  => 'Un-Visited Link',
                    598:                     'vlink' => 'Visited Link',
                    599:                     'alink' => 'Active Link');
1.82      albertel  600:     my $start_data_table = &Apache::loncommon::start_data_table();
1.19      www       601:     my $chtable='';
1.22      matthew   602:     foreach my $item (sort(keys(%colortypes))) {
1.19      www       603:        my $curcol=&Apache::loncommon::designparm($function.'.'.$item,$domain);
1.82      albertel  604:        $chtable.=&Apache::loncommon::start_data_table_row().
1.83      albertel  605: 	   '<td>'.$colortypes{$item}.'</td><td style="background: '.$curcol.
1.19      www       606:         '">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td><td><input name="'.$item.
1.21      www       607:         '" size="10" value="'.$curcol.
                    608: '" /></td><td><a href="javascript:pjump('."'color_custom','".$colortypes{$item}.
1.19      www       609: "','".$curcol."','"
1.82      albertel  610: 	    .$item."','parmform.pres','psub'".');">Select</a></td>'.
1.83      albertel  611: 	    &Apache::loncommon::end_data_table_row()."\n";
1.19      www       612:     }
1.82      albertel  613:     my $end_data_table = &Apache::loncommon::end_data_table();
1.23      matthew   614:     my $pjump_def = &Apache::lonhtmlcommon::pjump_javascript_definition();
1.19      www       615:     $r->print(<<ENDCOL);
1.82      albertel  616: <script type="text/javascript">
1.19      www       617: 
                    618:     function pclose() {
                    619:         parmwin=window.open("/adm/rat/empty.html","LONCAPAparms",
                    620:                  "height=350,width=350,scrollbars=no,menubar=no");
                    621:         parmwin.close();
                    622:     }
                    623: 
1.23      matthew   624:     $pjump_def
1.19      www       625: 
                    626:     function psub() {
                    627:         pclose();
                    628:         if (document.parmform.pres_marker.value!='') {
1.21      www       629:             if (document.parmform.pres_type.value!='') {
1.77      albertel  630:                 eval('document.prefs.'+
1.21      www       631:                      document.parmform.pres_marker.value+
1.19      www       632: 		     '.value=document.parmform.pres_value.value;');
1.21      www       633: 	    }
1.19      www       634:         } else {
                    635:             document.parmform.pres_value.value='';
                    636:             document.parmform.pres_marker.value='';
                    637:         }
                    638:     }
                    639: 
                    640: 
                    641: </script>
1.21      www       642: <form name="parmform">
                    643: <input type="hidden" name="pres_marker" />
                    644: <input type="hidden" name="pres_type" />
                    645: <input type="hidden" name="pres_value" />
                    646: </form>
1.88      albertel  647: <form name="prefs" action="/adm/preferences" method="post">
1.19      www       648: <input type="hidden" name="action" value="verify_and_change_colors" />
1.82      albertel  649: $start_data_table
1.19      www       650: $chtable
1.82      albertel  651: $end_data_table
1.19      www       652: </table>
1.21      www       653: <input type="submit" value="Change Custom Colors" />
                    654: <input type="submit" name="resetall" value="Reset All Colors to Default" />
1.12      www       655: </form>
1.19      www       656: ENDCOL
1.12      www       657: }
                    658: 
1.19      www       659: sub verify_and_change_colors {
1.12      www       660:     my $r = shift;
1.19      www       661: # figure out colors
1.80      albertel  662:     my $function=&Apache::loncommon::get_users_function();
1.19      www       663:     my $domain=&Apache::loncommon::determinedomain();
                    664:     my %colortypes=('pgbg'  => 'Page Background',
                    665:                     'tabbg' => 'Header Background',
                    666:                     'sidebg'=> 'Header Border',
                    667:                     'font'  => 'Font',
                    668:                     'link'  => 'Un-Visited Link',
                    669:                     'vlink' => 'Visited Link',
                    670:                     'alink' => 'Active Link');
                    671: 
1.12      www       672:     my $message='';
1.21      www       673:     foreach my $item (keys %colortypes) {
1.59      albertel  674:         my $color=$env{'form.'.$item};
1.21      www       675:         my $entry='color.'.$function.'.'.$item;
1.59      albertel  676: 	if (($color=~/^\#[0-9A-Fa-f]{6}$/) && (!$env{'form.resetall'})) {
1.21      www       677: 	    &Apache::lonnet::put('environment',{$entry => $color});
                    678: 	    &Apache::lonnet::appenv('environment.'.$entry => $color);
                    679: 	    $message.='Set '.$colortypes{$item}.' to '.$color.'<br />';
                    680: 	} else {
                    681: 	    &Apache::lonnet::del('environment',[$entry]);
                    682: 	    &Apache::lonnet::delenv('environment\.'.$entry);
                    683: 	    $message.='Reset '.$colortypes{$item}.'<br />';
                    684: 	}
                    685:     }
1.84      albertel  686:     my $now = time;
                    687:     &Apache::lonnet::put('environment',{'color.timestamp' => $now});
                    688:     &Apache::lonnet::appenv('environment.color.timestamp' => $now);
                    689: 
1.19      www       690:     $r->print(<<ENDVCCOL);
1.12      www       691: $message
1.88      albertel  692: <form name="client" action="/adm/preferences" method="post">
1.21      www       693: <input type="hidden" name="action" value="changecolors" />
                    694: </form>
1.19      www       695: ENDVCCOL
1.12      www       696: }
                    697: 
1.4       matthew   698: ######################################################
                    699: #            password handler subroutines            #
                    700: ######################################################
1.3       matthew   701: sub passwordchanger {
1.4       matthew   702:     # This function is a bit of a mess....
1.3       matthew   703:     # Passwords are encrypted using londes.js (DES encryption)
                    704:     my $r = shift;
1.4       matthew   705:     my $errormessage = shift;
                    706:     $errormessage = ($errormessage || '');
1.59      albertel  707:     my $user       = $env{'user.name'};
                    708:     my $domain     = $env{'user.domain'};
                    709:     my $homeserver = $env{'user.home'};
1.3       matthew   710:     my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
                    711:     # Check for authentication types that allow changing of the password.
                    712:     return if ($currentauth !~ /^(unix|internal):/);
                    713:     #
                    714:     # Generate keys
                    715:     my ($lkey_cpass ,$ukey_cpass ) = &des_keys();
                    716:     my ($lkey_npass1,$ukey_npass1) = &des_keys();
                    717:     my ($lkey_npass2,$ukey_npass2) = &des_keys();
1.4       matthew   718:     # Store the keys in the log files
1.3       matthew   719:     my $lonhost = $r->dir_config('lonHostID');
                    720:     my $logtoken=Apache::lonnet::reply('tmpput:'
                    721: 				       .$ukey_cpass  . $lkey_cpass .'&'
                    722: 				       .$ukey_npass1 . $lkey_npass1.'&'
                    723: 				       .$ukey_npass2 . $lkey_npass2,
                    724: 				       $lonhost);
1.4       matthew   725:     # Hexify the keys for output as javascript variables
1.3       matthew   726:     $ukey_cpass = hex($ukey_cpass);
                    727:     $lkey_cpass = hex($lkey_cpass);
                    728:     $ukey_npass1= hex($ukey_npass1);
                    729:     $lkey_npass1= hex($lkey_npass1);
                    730:     $ukey_npass2= hex($ukey_npass2);
                    731:     $lkey_npass2= hex($lkey_npass2);
                    732:     # Output javascript to deal with passwords
1.4       matthew   733:     # Output DES javascript
1.3       matthew   734:     {
                    735: 	my $include = $r->dir_config('lonIncludes');
                    736: 	my $jsh=Apache::File->new($include."/londes.js");
                    737: 	$r->print(<$jsh>);
                    738:     }
                    739:     $r->print(<<ENDFORM);
                    740: <script language="JavaScript">
                    741: 
                    742:     function send() {
                    743:         uextkey=this.document.client.elements.ukey_cpass.value;
                    744:         lextkey=this.document.client.elements.lkey_cpass.value;
                    745:         initkeys();
                    746: 
1.52      raeburn   747:         this.document.pserver.elements.currentpass.value
1.3       matthew   748:             =crypted(this.document.client.elements.currentpass.value);
                    749: 
                    750:         uextkey=this.document.client.elements.ukey_npass1.value;
                    751:         lextkey=this.document.client.elements.lkey_npass1.value;
                    752:         initkeys();
1.52      raeburn   753:         this.document.pserver.elements.newpass_1.value
1.3       matthew   754:             =crypted(this.document.client.elements.newpass_1.value);
                    755: 
                    756:         uextkey=this.document.client.elements.ukey_npass2.value;
                    757:         lextkey=this.document.client.elements.lkey_npass2.value;
                    758:         initkeys();
1.52      raeburn   759:         this.document.pserver.elements.newpass_2.value
1.3       matthew   760:             =crypted(this.document.client.elements.newpass_2.value);
                    761: 
1.52      raeburn   762:         this.document.pserver.submit();
1.3       matthew   763:     }
                    764: 
                    765: </script>
1.4       matthew   766: $errormessage
1.10      www       767: 
1.3       matthew   768: <p>
1.36      www       769: <!-- We separate the forms into 'server' and 'client' in order to
1.3       matthew   770:      ensure that unencrypted passwords will not be sent out by a
                    771:      crappy browser -->
                    772: 
1.88      albertel  773: <form name="pserver" action="/adm/preferences" method="post">
1.3       matthew   774: <input type="hidden" name="logtoken"    value="$logtoken" />
                    775: <input type="hidden" name="action"      value="verify_and_change_pass" />
                    776: <input type="hidden" name="currentpass" value="" />
1.4       matthew   777: <input type="hidden" name="newpass_1"   value="" />
                    778: <input type="hidden" name="newpass_2"   value="" />
1.3       matthew   779: </form>
                    780: 
                    781: <form name="client" >
                    782: <table>
1.4       matthew   783: <tr><td align="right"> Current password:                      </td>
                    784:     <td><input type="password" name="currentpass" size="10"/> </td></tr>
                    785: <tr><td align="right"> New password:                          </td>
                    786:     <td><input type="password" name="newpass_1" size="10"  /> </td></tr>
                    787: <tr><td align="right"> Confirm password:                      </td>
                    788:     <td><input type="password" name="newpass_2" size="10"  /> </td></tr>
1.3       matthew   789: <tr><td colspan="2" align="center">
                    790:     <input type="button" value="Change Password" onClick="send();">
                    791: </table>
1.4       matthew   792: <input type="hidden" name="ukey_cpass"  value="$ukey_cpass" />
                    793: <input type="hidden" name="lkey_cpass"  value="$lkey_cpass" />
1.3       matthew   794: <input type="hidden" name="ukey_npass1" value="$ukey_npass1" />
                    795: <input type="hidden" name="lkey_npass1" value="$lkey_npass1" />
                    796: <input type="hidden" name="ukey_npass2" value="$ukey_npass2" />
                    797: <input type="hidden" name="lkey_npass2" value="$lkey_npass2" />
                    798: </form>
                    799: </p>
                    800: ENDFORM
                    801:     #
                    802:     return;
                    803: }
                    804: 
                    805: sub verify_and_change_password {
                    806:     my $r = shift;
1.59      albertel  807:     my $user       = $env{'user.name'};
                    808:     my $domain     = $env{'user.domain'};
                    809:     my $homeserver = $env{'user.home'};
1.3       matthew   810:     my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
1.4       matthew   811:     # Check for authentication types that allow changing of the password.
                    812:     return if ($currentauth !~ /^(unix|internal):/);
1.3       matthew   813:     #
1.59      albertel  814:     my $currentpass = $env{'form.currentpass'}; 
                    815:     my $newpass1    = $env{'form.newpass_1'}; 
                    816:     my $newpass2    = $env{'form.newpass_2'};
                    817:     my $logtoken    = $env{'form.logtoken'};
1.3       matthew   818:     # Check for empty data 
1.4       matthew   819:     unless (defined($currentpass) && 
                    820: 	    defined($newpass1)    && 
                    821: 	    defined($newpass2)    ){
                    822: 	&passwordchanger($r,"<p>\n<font color='#ff0000'>ERROR</font>".
                    823: 			 "Password data was blank.\n</p>");
1.3       matthew   824: 	return;
                    825:     }
1.16      albertel  826:     # Get the keys
                    827:     my $lonhost = $r->dir_config('lonHostID');
1.3       matthew   828:     my $tmpinfo = Apache::lonnet::reply('tmpget:'.$logtoken,$lonhost);
                    829:     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.4       matthew   830:         # I do not a have a better idea about how to handle this
1.3       matthew   831: 	$r->print(<<ENDERROR);
                    832: <p>
                    833: <font color="#ff0000">ERROR:</font> Unable to retrieve stored token for
1.4       matthew   834: password decryption.  Please log out and try again.
1.3       matthew   835: </p>
                    836: ENDERROR
1.4       matthew   837:         # Probably should log an error here
1.75      albertel  838:         return 1;
1.3       matthew   839:     }
                    840:     my ($ckey,$n1key,$n2key)=split(/&/,$tmpinfo);
1.4       matthew   841:     # 
1.17      matthew   842:     $currentpass = &des_decrypt($ckey ,$currentpass);
                    843:     $newpass1    = &des_decrypt($n1key,$newpass1);
                    844:     $newpass2    = &des_decrypt($n2key,$newpass2);
1.4       matthew   845:     # 
1.3       matthew   846:     if ($newpass1 ne $newpass2) {
1.4       matthew   847: 	&passwordchanger($r,
                    848: 			 '<font color="#ff0000">ERROR:</font>'.
                    849: 			 'The new passwords you entered do not match.  '.
                    850: 			 'Please try again.');
1.75      albertel  851: 	return 1;
1.4       matthew   852:     }
                    853:     if (length($newpass1) < 7) {
                    854: 	&passwordchanger($r,
                    855: 			 '<font color="#ff0000">ERROR:</font>'.
                    856: 			 'Passwords must be a minimum of 7 characters long.  '.
                    857: 			 'Please try again.');
1.75      albertel  858: 	return 1;
1.3       matthew   859:     }
1.4       matthew   860:     #
                    861:     # Check for bad characters
                    862:     my $badpassword = 0;
                    863:     foreach (split(//,$newpass1)) {
                    864: 	$badpassword = 1 if ((ord($_)<32)||(ord($_)>126));
                    865:     }
                    866:     if ($badpassword) {
                    867: 	# I can't figure out how to enter bad characters on my browser.
                    868: 	&passwordchanger($r,<<ENDERROR);
                    869: <font color="#ff0000">ERROR:</font>
                    870: The password you entered contained illegal characters.<br />
                    871: Valid characters are: space and <br />
                    872: <pre>
                    873: !&quot;\#$%&amp;\'()*+,-./0123456789:;&lt;=&gt;?\@
                    874: ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_\`abcdefghijklmnopqrstuvwxyz{|}~
                    875: </pre>
                    876: ENDERROR
                    877:     }
                    878:     # 
                    879:     # Change the password (finally)
                    880:     my $result = &Apache::lonnet::changepass
                    881: 	($user,$domain,$currentpass,$newpass1,$homeserver);
                    882:     # Inform the user the password has (not?) been changed
                    883:     if ($result =~ /^ok$/) {
                    884: 	$r->print(<<"ENDTEXT");
1.9       matthew   885: <h2>The password for $user was successfully changed</h2>
1.4       matthew   886: ENDTEXT
                    887:     } else {
                    888: 	# error error: run in circles, scream and shout
                    889:         $r->print(<<ENDERROR);
1.9       matthew   890: <h2><font color="#ff0000">The password for $user was not changed</font></h2>
1.8       matthew   891: Please make sure your old password was entered correctly.
1.4       matthew   892: ENDERROR
1.75      albertel  893:         return 1;
1.4       matthew   894:     }
                    895:     return;
1.3       matthew   896: }
                    897: 
1.42      raeburn   898: ################################################################
                    899: #            discussion display subroutines 
                    900: ################################################################
                    901: sub discussionchanger {
                    902:     my $r = shift;
1.59      albertel  903:     my $user       = $env{'user.name'};
                    904:     my $domain     = $env{'user.domain'};
1.42      raeburn   905:     my %userenv = &Apache::lonnet::get
1.43      raeburn   906:         ('environment',['discdisplay','discmarkread']);
                    907:     my $discdisp = 'allposts';
                    908:     my $discmark = 'onmark';
                    909: 
                    910:     if (defined($userenv{'discdisplay'})) {
                    911:         unless ($userenv{'discdisplay'} eq '') { 
                    912:             $discdisp = $userenv{'discdisplay'};
                    913:         }
                    914:     }
                    915:     if (defined($userenv{'discmarkread'})) {
                    916:         unless ($userenv{'discdisplay'} eq '') { 
                    917:             $discmark = $userenv{'discmarkread'};
                    918:         }
                    919:     }
                    920: 
                    921:     my $newdisp = 'unread';
                    922:     my $newmark = 'ondisp';
                    923: 
                    924:     my $function = &Apache::loncommon::get_users_function();
                    925:     my $color = &Apache::loncommon::designparm($function.'.tabbg',
1.59      albertel  926:                                                     $env{'user.domain'});
1.43      raeburn   927:     my %lt = &Apache::lonlocal::texthash(
                    928:         'pref' => 'Display Preference',
                    929:         'curr' => 'Current setting ',
                    930:         'actn' => 'Action',
                    931:         'sdpf' => 'Set display preferences for discussion posts for both bulletin boards and individual resources in all your courses.',
                    932:         'prca' => 'Preferences can be set that determine',
                    933:         'whpo' => 'Which posts are displayed when you display a bulletin board or resource, and',
                    934:         'unwh' => 'Under what circumstances posts are identfied as "New"',
                    935:         'allposts' => 'All posts',
                    936:         'unread' => 'New posts only',
                    937:         'ondisp' => 'Once displayed',
                    938:         'onmark' => 'Once marked as read',
                    939:         'disa' => 'Posts displayed?',
                    940:         'npmr' => 'New posts cease to be identified as "New"?',
                    941:         'thde'  => 'The preferences you set here can be overridden within each individual discussion.',
                    942:         'chgt' => 'Change to '
                    943:     );
                    944:     my $dispchange = $lt{'unread'};
                    945:     my $markchange = $lt{'ondisp'};
                    946:     my $currdisp = $lt{'allposts'};
                    947:     my $currmark = $lt{'onmark'};
                    948: 
                    949:     if ($discdisp eq 'unread') {
                    950:         $dispchange = $lt{'allposts'};
                    951:         $currdisp = $lt{'unread'};
                    952:         $newdisp = 'allposts';
                    953:     }
                    954: 
                    955:     if ($discmark eq 'ondisp') {
                    956:         $markchange = $lt{'onmark'};
                    957:         $currmark = $lt{'ondisp'};
                    958:         $newmark = 'onmark';
1.42      raeburn   959:     }
1.43      raeburn   960:     
                    961:     $r->print(<<"END");
1.88      albertel  962: <form name="prefs" action="/adm/preferences" method="post">
1.42      raeburn   963: <input type="hidden" name="action" value="verify_and_change_discussion" />
                    964: <br />
1.87      albertel  965: $lt{'sdpf'}<br /> $lt{'prca'}  <ol><li>$lt{'whpo'}</li><li>$lt{'unwh'}</li></ol> 
1.43      raeburn   966: <br />
                    967: <br />
1.82      albertel  968: END
                    969:     $r->print(&Apache::loncommon::start_data_table());
                    970:     $r->print(<<"END");
                    971:        <tr>
                    972:         <th>$lt{'pref'}</th>
                    973:         <th>$lt{'curr'}</th>
                    974:         <th>$lt{'actn'}?</th>
1.43      raeburn   975:        </tr>
1.82      albertel  976: END
                    977:     $r->print(&Apache::loncommon::start_data_table_row());
                    978:     $r->print(<<"END");
1.43      raeburn   979:        <td>$lt{'disa'}</td>
                    980:        <td>$lt{$discdisp}</td>
1.82      albertel  981:        <td><label><input type="checkbox" name="discdisp" /><input type="hidden" name="newdisp" value="$newdisp" />&nbsp;$lt{'chgt'} "$dispchange"</label></td>
                    982: END
                    983:     $r->print(&Apache::loncommon::end_data_table_row().
                    984: 	      &Apache::loncommon::start_data_table_row());
                    985:     $r->print(<<"END");
1.43      raeburn   986:        <td>$lt{'npmr'}</td>
                    987:        <td>$lt{$discmark}</td>
1.82      albertel  988:        <td><label><input type="checkbox" name="discmark" /><input type="hidden" name="newmark" value="$newmark" />&nbsp;$lt{'chgt'} "$markchange"</label></td>
1.43      raeburn   989:       </tr>
1.82      albertel  990: END
                    991:     $r->print(&Apache::loncommon::end_data_table_row().
                    992: 	      &Apache::loncommon::end_data_table());
                    993:     $r->print(<<"END");
1.43      raeburn   994: <br />
                    995: <br />
                    996: <input type="submit" name="sub" value="Store Changes" />
                    997: <br />
                    998: <br />
                    999: Note: $lt{'thde'}
                   1000: </form>
                   1001: END
1.42      raeburn  1002: }
                   1003:                                                                                                                 
                   1004: sub verify_and_change_discussion {
                   1005:     my $r = shift;
1.59      albertel 1006:     my $user     = $env{'user.name'};
                   1007:     my $domain   = $env{'user.domain'};
1.42      raeburn  1008:     my $message='';
1.59      albertel 1009:     if (defined($env{'form.discdisp'}) ) {
                   1010:         my $newdisp  = $env{'form.newdisp'};
1.43      raeburn  1011:         if ($newdisp eq 'unread') {
1.87      albertel 1012:             $message .='In discussions: only new posts will be displayed.<br />';
1.43      raeburn  1013:             &Apache::lonnet::put('environment',{'discdisplay' => $newdisp});
                   1014:             &Apache::lonnet::appenv('environment.discdisplay' => $newdisp);
                   1015:         } else {
1.87      albertel 1016:             $message .= 'In discussions: all posts will be displayed.<br />';
1.43      raeburn  1017:             &Apache::lonnet::del('environment',['discdisplay']);
                   1018:             &Apache::lonnet::delenv('environment\.discdisplay');
                   1019:         }
                   1020:     }
1.59      albertel 1021:     if (defined($env{'form.discmark'}) ) {
                   1022:         my $newmark = $env{'form.newmark'};
1.43      raeburn  1023:         if ($newmark eq 'ondisp') {
1.87      albertel 1024:            $message.='In discussions: new posts will be cease to be identified as "new" after display.<br />';
1.43      raeburn  1025:             &Apache::lonnet::put('environment',{'discmarkread' => $newmark});
                   1026:             &Apache::lonnet::appenv('environment.discmarkread' => $newmark);
                   1027:         } else {
1.87      albertel 1028:             $message.='In discussions: posts will be identified as "new" until marked as read by the reader.<br />';
1.43      raeburn  1029:             &Apache::lonnet::del('environment',['discmarkread']);
                   1030:             &Apache::lonnet::delenv('environment\.discmarkread');
                   1031:         }
1.42      raeburn  1032:     }
                   1033:     $r->print(<<ENDVCSCREEN);
                   1034: $message
                   1035: ENDVCSCREEN
                   1036: }
                   1037: 
1.63      raeburn  1038: ################################################################
                   1039: # Subroutines for page display on course access (Course Coordinators)
                   1040: ################################################################
                   1041: sub coursedisplaychanger {
                   1042:     my $r = shift;
                   1043:     my $user       = $env{'user.name'};
                   1044:     my $domain     = $env{'user.domain'};
1.66      albertel 1045:     my %userenv = &Apache::lonnet::get('environment',['course_init_display']);
1.71      raeburn  1046:     my $currvalue = 'whatsnew';
1.73      albertel 1047:     my $firstselect = '';
                   1048:     my $whatsnewselect = 'checked="checked"';
1.71      raeburn  1049:     if (exists($userenv{'course_init_display'})) {
                   1050:         if ($userenv{'course_init_display'} eq 'firstres') {
                   1051:             $currvalue = 'firstres';
1.73      albertel 1052:             $firstselect = 'checked="checked"';
                   1053: 	    $whatsnewselect = '';
1.71      raeburn  1054:         }
1.63      raeburn  1055:     }
1.71      raeburn  1056:     my %pagenames = (
                   1057:                        firstres => 'First resource',
                   1058:                        whatsnew => "What's new page",
                   1059:                     );
1.70      raeburn  1060:     my $whatsnew_off=&mt('Display the [_1] in the course.','<b>first resource</b>');
                   1061:     my $whatsnew_on=&mt('Display the "[_1]" page - a summary of items in the course which require attention.',"<b>What's New</b>");
1.63      raeburn  1062: 
1.71      raeburn  1063:     $r->print('<br /><b>'.&mt('Set the default page to be displayed when you select a course role').'</b>&nbsp;'.&mt('(Currently: [_1])',$pagenames{$currvalue}).'<br />'.&mt('The global user preference you set for your courses can be overridden in an individual course by setting a course specific setting via the "[_1]" page in the course',"<i>What's New</i>").'<br /><br />');
1.63      raeburn  1064:     $r->print(<<ENDLSCREEN);
1.88      albertel 1065: <form name="prefs" action="/adm/preferences" method="post">
1.63      raeburn  1066: <input type="hidden" name="action" value="verify_and_change_coursepage" />
1.72      albertel 1067: <br />
1.65      albertel 1068: <label><input type="radio" name="newdisp" value="firstres" $firstselect /> $whatsnew_off</label><br />
1.70      raeburn  1069: <label><input type="radio" name="newdisp" value="whatsnew" $whatsnewselect /> $whatsnew_on</label><input type="hidden" name="refpage" value="$env{'form.refpage'}" />
1.63      raeburn  1070: ENDLSCREEN
1.70      raeburn  1071:     $r->print('<br /><br /><input type="submit" value="'.&mt('Change').'" />
1.63      raeburn  1072: </form>');
                   1073: }
                   1074: 
                   1075: sub verify_and_change_coursepage {
                   1076:     my $r = shift;
                   1077:     my $message='';
                   1078:     my %lt = &Apache::lonlocal::texthash(
1.70      raeburn  1079:         'defs' => 'Default now set',
1.71      raeburn  1080:         'when' => 'when you select a course role from the roles screen',
1.63      raeburn  1081:         'ywbt' => 'you will be taken to the start of the course.',
                   1082:         'apwb' => 'a page will be displayed that lists items in the course that may require action from you.',
                   1083:         'gtts' => 'Go to the start of the course',
1.70      raeburn  1084:         'dasp' => "Display the What's New page listing course action items", 
1.63      raeburn  1085:     );
                   1086:     my $newdisp  = $env{'form.newdisp'};
1.70      raeburn  1087:     $message = '<b>'.$lt{'defs'}.'</b>: '.$lt{'when'}.', ';
1.63      raeburn  1088:     if ($newdisp eq 'firstres') {
1.87      albertel 1089:         $message .= $lt{'ywbt'}.'<br />';
1.63      raeburn  1090:         &Apache::lonnet::put('environment',{'course_init_display' => $newdisp});
                   1091:         &Apache::lonnet::appenv('environment.course_init_display' => $newdisp);
                   1092:     } else {
1.87      albertel 1093:         $message .= $lt{'apwb'}.'<br />';
1.63      raeburn  1094:         &Apache::lonnet::del('environment',['course_init_display']);
                   1095:         &Apache::lonnet::delenv('environment\.course_init_display');
                   1096:     }
1.70      raeburn  1097:     my $refpage = $env{'form.refpage'};
1.63      raeburn  1098:     if (($env{'request.course.fn'}) && ($env{'request.course.id'})) {
                   1099:         if ($newdisp eq 'firstres') {
                   1100:             my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                   1101:             my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; 
                   1102:             my ($furl,$ferr)=
                   1103:                 &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
                   1104:             $message .= '<br /><font size="+1"><a href="'.$furl.'">'.$lt{'gtts'}.' <i>'.&mt('now').'</i></a></font>';
                   1105:         } else {
1.70      raeburn  1106:             $message .= '<br /><font size="+1"><a href="/adm/whatsnew?refpage='.
                   1107:                         $refpage.'">'.$lt{'dasp'}.'</a></font>';
1.63      raeburn  1108:         }
                   1109:     }
                   1110:     $r->print(<<ENDVCSCREEN);
                   1111: $message
                   1112: <br /><br />
                   1113: ENDVCSCREEN
                   1114: }
                   1115: 
                   1116: 
1.4       matthew  1117: ######################################################
                   1118: #            other handler subroutines               #
                   1119: ######################################################
                   1120: 
1.3       matthew  1121: ################################################################
                   1122: #                          Main handler                        #
                   1123: ################################################################
1.1       www      1124: sub handler {
                   1125:     my $r = shift;
1.59      albertel 1126:     my $user = $env{'user.name'};
                   1127:     my $domain = $env{'user.domain'};
1.31      www      1128:     &Apache::loncommon::content_type($r,'text/html');
1.4       matthew  1129:     # Some pages contain DES keys and should not be cached.
                   1130:     &Apache::loncommon::no_cache($r);
1.1       www      1131:     $r->send_http_header;
                   1132:     return OK if $r->header_only;
1.9       matthew  1133:     #
1.35      matthew  1134:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.70      raeburn  1135:                                    ['action','wysiwyg','returnurl','refpage']);
1.35      matthew  1136:     #
                   1137:     &Apache::lonhtmlcommon::clear_breadcrumbs();
                   1138:     &Apache::lonhtmlcommon::add_breadcrumb
                   1139:         ({href => '/adm/preferences',
                   1140:           text => 'Set User Preferences'});
                   1141: 
                   1142:     my @Options;
                   1143:     # Determine current authentication method
                   1144:     my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
                   1145:     if ($currentauth =~ /^(unix|internal):/) {
                   1146:         push (@Options,({ action   => 'changepass',
1.40      www      1147:                           linktext => 'Change Password',
1.35      matthew  1148:                           href     => '/adm/preferences',
                   1149:                           help     => 'Change_Password',
                   1150:                           subroutine => \&passwordchanger,
                   1151:                           breadcrumb => 
                   1152:                               { href => '/adm/preferences?action=changepass',
                   1153:                                 text => 'Change Password'},
                   1154:                           },
                   1155:                         { action => 'verify_and_change_pass',
                   1156:                           subroutine => \&verify_and_change_password,
                   1157:                           breadcrumb => 
                   1158:                               { href =>'/adm/preferences?action=changepass',
                   1159:                                 text => 'Change Password'},
1.75      albertel 1160:                           printmenu => 'not_on_error',
1.35      matthew  1161:                           }));
                   1162:     }
                   1163:     push (@Options,({ action   => 'changescreenname',
                   1164:                       linktext => 'Change Screen Name',
                   1165:                       href     => '/adm/preferences',
                   1166:                       help     => 'Prefs_Screen_Name_Nickname',
                   1167:                       subroutine => \&screennamechanger,
                   1168:                       breadcrumb => 
                   1169:                           { href => '/adm/preferences?action=changescreenname',
                   1170:                             text => 'Change Screen Name'},
                   1171:                       },
                   1172:                     { action   => 'verify_and_change_screenname',
                   1173:                       subroutine => \&verify_and_change_screenname,
                   1174:                       breadcrumb => 
                   1175:                           { href => '/adm/preferences?action=changescreenname',
                   1176:                             text => 'Change Screen Name'},
                   1177:                       printmenu => 'yes',
                   1178:                       }));
                   1179: 
                   1180:     push (@Options,({ action   => 'changemsgforward',
1.49      albertel 1181:                       linktext => 'Change Message Forwarding and Notification Addresses',
1.35      matthew  1182:                       href     => '/adm/preferences',
                   1183:                       help     => 'Prefs_Forwarding',
                   1184:                       breadcrumb => 
                   1185:                           { href => '/adm/preferences?action=changemsgforward',
                   1186:                             text => 'Change Message Forwarding'},
                   1187:                       subroutine => \&msgforwardchanger,
                   1188:                       },
                   1189:                     { action => 'verify_and_change_msgforward',
                   1190:                       breadcrumb => 
                   1191:                           { href => '/adm/preferences?action=changemsgforward',
                   1192:                             text => 'Change Message Forwarding'},
                   1193:                       printmenu => 'yes',
                   1194:                       subroutine => \&verify_and_change_msgforward }));
                   1195:     my $aboutmeaction=
1.59      albertel 1196:         '/adm/'.$env{'user.domain'}.'/'.$env{'user.name'}.'/aboutme';
1.35      matthew  1197:     push (@Options,{ action => 'none', 
                   1198:                      linktext =>
1.41      www      1199:                          q{Edit the 'About Me' Personal Information Screen},
1.45      www      1200: 		     help => 'Prefs_About_Me',
1.35      matthew  1201:                      href => $aboutmeaction});
                   1202:     push (@Options,({ action => 'changecolors',
                   1203:                       linktext => 'Change Color Scheme',
                   1204:                       href => '/adm/preferences',
                   1205:                       help => 'Change_Colors',
                   1206:                       breadcrumb => 
                   1207:                           { href => '/adm/preferences?action=changecolors',
                   1208:                             text => 'Change Colors'},
                   1209:                       subroutine => \&colorschanger,
                   1210:                   },
                   1211:                     { action => 'verify_and_change_colors',
                   1212:                       breadcrumb => 
                   1213:                           { href => '/adm/preferences?action=changecolors',
                   1214:                             text => 'Change Colors'},
                   1215:                       printmenu => 'yes',
                   1216:                       subroutine => \&verify_and_change_colors,
                   1217:                       }));
                   1218:     push (@Options,({ action => 'changelanguages',
1.39      www      1219:                       linktext => 'Change Language Preferences',
1.35      matthew  1220:                       href => '/adm/preferences',
1.45      www      1221: 		      help => 'Prefs_Language',
1.35      matthew  1222:                       breadcrumb=>
                   1223:                           { href => '/adm/preferences?action=changelanguages',
                   1224:                             text => 'Change Language'},
                   1225:                       subroutine =>  \&languagechanger,
                   1226:                   },
                   1227:                     { action => 'verify_and_change_languages',
                   1228:                       breadcrumb=>
                   1229:                           {href => '/adm/preferences?action=changelanguages',
                   1230:                            text => 'Change Language'},
                   1231:                       printmenu => 'yes',
                   1232:                       subroutine=>\&verify_and_change_languages, }
                   1233:                     ));
1.44      www      1234:     push (@Options,({ action => 'changewysiwyg',
                   1235:                       linktext => 'Change WYSIWYG Editor Preferences',
                   1236:                       href => '/adm/preferences',
                   1237:                       breadcrumb => 
                   1238:                             { href => '/adm/preferences?action=changewysiwyg',
                   1239:                               text => 'Change WYSIWYG Preferences'},
                   1240:                       subroutine => \&wysiwygchanger,
                   1241:                   },
                   1242:                     { action => 'set_wysiwyg',
                   1243:                       breadcrumb =>
                   1244:                           { href => '/adm/preferences?action=changewysiwyg',
                   1245:                             text => 'Change WYSIWYG Preferences'},
                   1246:                       printmenu => 'yes',
                   1247:                       subroutine => \&verify_and_change_wysiwyg, }
                   1248:                     ));
1.42      raeburn  1249:     push (@Options,({ action => 'changediscussions',
                   1250:                       linktext => 'Change Discussion Display Preferences',
                   1251:                       href => '/adm/preferences',
1.46      raeburn  1252:                       help => 'Change_Discussion_Display',
1.42      raeburn  1253:                       breadcrumb => 
                   1254:                             { href => '/adm/preferences?action=changediscussions',
1.43      raeburn  1255:                               text => 'Change Discussion Preferences'},
1.42      raeburn  1256:                       subroutine => \&discussionchanger,
                   1257:                   },
                   1258:                     { action => 'verify_and_change_discussion',
                   1259:                       breadcrumb =>
                   1260:                           { href => '/adm/preferences?action=changediscussions',
1.43      raeburn  1261:                             text => 'Change Discussion Preferences'},
1.42      raeburn  1262:                       printmenu => 'yes',
                   1263:                       subroutine => \&verify_and_change_discussion, }
                   1264:                     ));
                   1265:                        
1.50      albertel 1266:     push (@Options,({ action   => 'changerolespref',
                   1267:                       linktext => 'Change Roles Page Preferences',
                   1268:                       href     => '/adm/preferences',
                   1269:                       subroutine => \&rolesprefchanger,
                   1270:                       breadcrumb =>
                   1271:                           { href => '/adm/preferences?action=changerolespref',
                   1272:                             text => 'Change Roles Pref'},
                   1273:                       },
                   1274:                     { action   => 'verify_and_change_rolespref',
                   1275:                       subroutine => \&verify_and_change_rolespref,
                   1276:                       breadcrumb =>
                   1277:                           { href => '/adm/preferences?action=changerolespref',
                   1278:                             text => 'Change Roles Preferences'},
                   1279:                       printmenu => 'yes',
                   1280:                       }));
                   1281: 
1.54      albertel 1282:     push (@Options,({ action   => 'changetexenginepref',
                   1283:                       linktext => 'Change How Math Equations Are Displayed',
                   1284:                       href     => '/adm/preferences',
                   1285:                       subroutine => \&texenginechanger,
                   1286:                       breadcrumb =>
                   1287:                           { href => '/adm/preferences?action=changetexenginepref',
                   1288:                             text => 'Change Math Pref'},
                   1289:                       },
                   1290:                     { action   => 'verify_and_change_texengine',
                   1291:                       subroutine => \&verify_and_change_texengine,
                   1292:                       breadcrumb =>
                   1293:                           { href => '/adm/preferences?action=changetexenginepref',
                   1294:                             text => 'Change Math Preferences'},
                   1295:                       printmenu => 'yes',
                   1296:                       }));
1.85      albertel 1297: 
                   1298:     if ($env{'environment.remote'} eq 'off') {
                   1299: 	push (@Options,({ action => 'launch',
                   1300: 			  linktext => 'Launch Remote Control',
                   1301: 			  href => '/adm/remote?url=/adm/preferences',
                   1302: 		      }));
                   1303:     } else {
                   1304: 	push (@Options,({ action => 'collapse',
                   1305: 			  linktext => 'Collapse Remote Control',
                   1306: 			  href => '/adm/remote?url=/adm/preferences',
                   1307: 		      }));
                   1308:     }
                   1309: 
1.74      albertel 1310:     if (&Apache::lonnet::allowed('whn',$env{'request.course.id'})
                   1311: 	|| &Apache::lonnet::allowed('whn',$env{'request.course.id'}.'/'
                   1312: 				    .$env{'request.course.sec'})) {
1.63      raeburn  1313:         push (@Options,({ action => 'changecourseinit',
                   1314:                           linktext => 'Change Course Initialization Preference',
                   1315:                           href => '/adm/preferences',
                   1316:                           subroutine => \&coursedisplaychanger,
                   1317:                           breadcrumb =>
                   1318:                               { href => '/adm/preferences?action=changecourseinit',
                   1319:                                 text => 'Change Course Init. Pref.'},
                   1320:                           },
                   1321:                         { action => 'verify_and_change_coursepage',
                   1322:                           breadcrumb =>
                   1323:                           { href => '/adm/preferences?action=changecourseinit',                               text => 'Change Course Initialization Preference'},
                   1324:                         printmenu => 'yes',
                   1325:                         subroutine => \&verify_and_change_coursepage,
                   1326:                        }));
                   1327:     }
1.50      albertel 1328: 
1.62      raeburn  1329:     if ($env{'user.name'} =~ /^(albertel|fox|foxr|koretemey|korte|hallmat3|turtle|raeburn)$/) {
1.35      matthew  1330:         push (@Options,({ action => 'debugtoggle',
                   1331:                           printmenu => 'yes',
                   1332:                           subroutine => \&toggle_debug,
                   1333:                           }));
                   1334:     }
1.76      albertel 1335: 
                   1336:     $r->print(&Apache::loncommon::start_page('Change Preferences'));
                   1337: 
1.35      matthew  1338:     my $call = undef;
1.48      albertel 1339:     my $help = undef;
1.35      matthew  1340:     my $printmenu = 'yes';
                   1341:     foreach my $option (@Options) {
1.59      albertel 1342:         if ($option->{'action'} eq $env{'form.action'}) {
1.35      matthew  1343:             $call = $option->{'subroutine'};
                   1344:             $printmenu = $option->{'printmenu'};
                   1345:             if (exists($option->{'breadcrumb'})) {
                   1346:                 &Apache::lonhtmlcommon::add_breadcrumb
                   1347:                     ($option->{'breadcrumb'});
                   1348:             }
1.48      albertel 1349: 	    $help=$option->{'help'};
1.35      matthew  1350:         }
                   1351:     }
1.81      albertel 1352:     $r->print(&Apache::lonhtmlcommon::breadcrumbs('Change Preferences',$help));
1.75      albertel 1353:     my $error;
1.35      matthew  1354:     if (defined($call)) {
1.75      albertel 1355:         $error = $call->($r);
1.35      matthew  1356:     }
1.75      albertel 1357:     if ( ( ($printmenu eq 'yes')
                   1358: 	   || ($printmenu eq 'not_on_error' && !$error) )
                   1359: 	 && (!$env{'form.returnurl'})) {
1.35      matthew  1360:         my $optionlist = '<table cellpadding="5">';
1.59      albertel 1361:         if ($env{'user.name'} =~ 
1.62      raeburn  1362:                          /^(albertel|kortemey|fox|foxr|korte|hallmat3|turtle|raeburn)$/
1.35      matthew  1363:             ) {
                   1364:             push (@Options,({ action => 'debugtoggle',
                   1365:                               linktext => 'Toggle Debug Messages',
                   1366:                               text => 'Current Debug status is -'.
1.59      albertel 1367:                                   $env{'user.debug'}.'-.',
1.35      matthew  1368:                               href => '/adm/preferences',
                   1369:                               printmenu => 'yes',
                   1370:                               subroutine => \&toggle_debug,
                   1371:                               }));
                   1372:         }
                   1373:         foreach my $option(@Options) {
                   1374:             my $optiontext = '';
                   1375:             if (exists($option->{'href'})) {
1.85      albertel 1376: 		$option->{'href_args'}{'action'}=$option->{'action'};
                   1377: 		$optiontext .= 
                   1378:                     '<a href="'.&add_get_param($option->{'href'},
                   1379: 					       $option->{'href_args'}).'">'.
1.47      albertel 1380:                     &mt($option->{'linktext'}).'</a>';
1.35      matthew  1381:             }
                   1382:             if (exists($option->{'text'})) {
1.47      albertel 1383:                 $optiontext .= ' '.&mt($option->{'text'});
1.35      matthew  1384:             }
                   1385:             if ($optiontext ne '') {
                   1386:                 $optiontext = '<font size="+1">'.$optiontext.'</font>'; 
                   1387:                 my $helplink = '&nbsp;';
                   1388:                 if (exists($option->{'help'})) {
                   1389:                     $helplink = &Apache::loncommon::help_open_topic
                   1390:                                                     ($option->{'help'});
                   1391:                 }
                   1392:                 $optionlist .= '<tr>'.
                   1393:                     '<td>'.$helplink.'</td>'.
                   1394:                     '<td>'.$optiontext.'</td>'.
                   1395:                     '</tr>';
                   1396:             }
1.13      www      1397:         }
1.35      matthew  1398:         $optionlist .= '</table>';
                   1399:         $r->print($optionlist);
1.59      albertel 1400:     } elsif ($env{'form.returnurl'}) {
                   1401: 	$r->print('<br /><a href="'.$env{'form.returnurl'}.'"><font size="+1">'.
1.44      www      1402: 		  &mt('Return').'</font></a>');
1.3       matthew  1403:     }
1.76      albertel 1404:     $r->print(&Apache::loncommon::end_page());
1.1       www      1405:     return OK;
1.35      matthew  1406: }
                   1407: 
                   1408: sub toggle_debug {
1.59      albertel 1409:     if ($env{'user.debug'}) {
1.35      matthew  1410:         &Apache::lonnet::delenv('user\.debug');
                   1411:     } else {
                   1412:         &Apache::lonnet::appenv('user.debug' => 1);
                   1413:     }
1.13      www      1414: }
1.1       www      1415: 
                   1416: 1;
                   1417: __END__

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