Return to lonmenu.pm CVS log

Up to [LON-CAPA] / loncom / interface

Created loncommon::decode_user_agent() subroutine with code removed from
lonauth.pm.  The code was modified to not require $r be passed along
ad nauseum.

Created lonhtmlcommon::javascript_nothing which returns an appropriate value
of nothing for use as the first parameter for window.open.  Most notably,
IE on macs get a different version, "'javascript:void(0);'", than everyone
one else, "''".  Of course IE on PC appearantly used to require the former
but now requires the latter.

lonmenu.pm and lonspreadsheet.pm were modified to use javascript_nothing.
lonauth was modified to use decode_user_agent.

    1: # The LearningOnline Network with CAPA
    2: # Routines to control the menu
    3: #
    4: # $Id: lonmenu.pm,v 1.47 2003/03/10 20:21:45 matthew Exp $
    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: #
   28: # (TeX Conversion Module
   29: #
   30: # 05/29/00,05/30 Gerd Kortemeyer)
   31: #
   32: # 10/05,05/28,05/30,06/01,06/08,06/09,07/04,08/07 Gerd Kortemeyer
   33: # 02/15/02 Matthew Hall
   34: 
   35: package Apache::lonmenu;
   36: 
   37: use strict;
   38: use Apache::lonnet;
   39: use Apache::Constants qw(:common);
   40: use Apache::lonhtmlcommon();
   41: use Apache::loncommon;
   42: use Apache::File;
   43: use vars qw(@desklines $readdesk);
   44: 
   45: # ============================= This gets called at the top of the body section
   46: 
   47: sub menubuttons {
   48:     my $forcereg=shift;
   49:     my $target  =shift;
   50:     my $registration=shift;
   51:     unless ($ENV{'browser.interface'} eq 'textual') { return ''; }
   52: # Textual display only
   53:     my $output=(<<ENDMAINMENU);
   54: <script>
   55: // BEGIN LON-CAPA Internal
   56: </script>
   57: <a href="/adm/menu" target="_top">Main Menu</a><br />
   58: <script>
   59: // END LON-CAPA Internal
   60: </script>
   61: ENDMAINMENU
   62:     if ($registration) { $output.=&innerregister($forcereg,$target); }
   63:     return $output."<hr />";
   64: }
   65: 
   66: # ====================================== This gets called in the header section
   67: 
   68: sub registerurl {
   69:     my $forcereg=shift;
   70:     my $target = shift;
   71:     my $result = '';
   72:     
   73:     if ($target eq 'edit') {
   74:         $result .="<script type=\"text/javascript\">\n".
   75:             "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
   76:             &Apache::loncommon::browser_and_searcher_javascript().
   77:                 "\n</script>\n";
   78:     }
   79:     if (($ENV{'browser.interface'} eq 'textual') ||
   80:         ((($ENV{'request.publicaccess'}) || 
   81:          (!&Apache::lonnet::is_on_map($ENV{'REQUEST_URI'}))) &&
   82:         (!$forcereg))) {
   83: 	return $result.
   84:          '<script type="text/javascript">function LONCAPAreg(){;} function LONCAPAstale(){}</script>';
   85:     }
   86: # Graphical display after login only
   87:     if ($Apache::lonxml::registered && !$forcereg) { return ''; }
   88:     $result.=&innerregister($forcereg,$target);
   89:     return $result;
   90: }
   91: 
   92: # =========== This gets called in order to register a URL, both with the Remote
   93: # =========== and in the body of the document
   94: 
   95: sub innerregister {
   96:     my $forcereg=shift;
   97:     my $target = shift;
   98:     my $result = '';
   99: 
  100:     $Apache::lonxml::registered=1;
  101: 
  102:     my $textual=($ENV{'browser.interface'} eq 'textual');
  103:     my $reopen=&Apache::lonmenu::reopenmenu();
  104: 
  105:     my $newmail='';
  106:     if (&Apache::lonmsg::newmail()) { 
  107:        $newmail=($textual?
  108:  '<b><a href="/adm/communicate">You have new messages</a></b><br />':
  109:                           'swmenu.setstatus("you have","messages");');
  110:     }
  111:     my $timesync=($textual?'':'swmenu.syncclock(1000*'.time.');');
  112: # =============================================================================
  113: # ============================ This is for URLs that actually can be registered
  114:     if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
  115: # -- This applies to homework problems for users with grading privileges
  116:         my $hwkadd='';
  117:         if 
  118:       ($ENV{'request.filename'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
  119: 	    if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
  120: 		$hwkadd.=&switch('','',7,1,'subm.gif','view sub','missions',
  121:                        "gocmd('/adm/grades','submission')",
  122: 		       'View user submissions for this assessment resource');
  123:             }
  124: 	    if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) {
  125: 		$hwkadd.=&switch('','',7,2,'pgrd.gif','problem','grades',
  126:                        "gocmd('/adm/grades','gradingmenu')",
  127:                        'Modify user grades for this assessment resource');
  128:             }
  129: 	    if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
  130: 		$hwkadd.=&switch('','',7,3,'pparm.gif','problem','parms',
  131:                        "gocmd('/adm/parmset','set')",
  132:                        'Modify deadlines, etc, for this assessment resource');
  133:             }
  134: 	}
  135: # -- End Homework
  136:         ###
  137:         ### Determine whether or not to display the 'cstr' button for this
  138:         ### resource
  139:         ###
  140:         my $editbutton = '';
  141:         if ($ENV{'user.author'}) {
  142:             if ($ENV{'request.role'}=~/^(ca|au)/) {
  143:                 # Set defaults for authors
  144:                 my ($top,$bottom) = ('con-','struct');
  145:                 my $action = "go('/priv/".$ENV{'user.name'}."');";
  146:                 my $cadom  = $ENV{'request.role.domain'};
  147:                 my $caname = $ENV{'user.name'};
  148:                 my $desc = "Enter my resource construction space";
  149:                 # Set defaults for co-authors
  150:                 if ($ENV{'request.role'} =~ /^ca/) { 
  151:                     ($cadom,$caname)=($ENV{'request.role'}=~/(\w+)\/(\w+)$/);
  152:                     ($top,$bottom) = ('co con-','struct');
  153:                     $action = "go('/priv/".$caname."');";
  154:                     $desc = "Enter construction space as co-author";
  155:                 }
  156:                 # Check that we are on the correct machine
  157:                 my $home = &Apache::lonnet::homeserver($caname,$cadom);
  158:                 if ($home eq $Apache::lonnet::perlvar{'lonHostID'}) {
  159:                     $editbutton=&switch
  160:                         ('','',6,1,$top,,$bottom,$action,$desc);
  161:                 }
  162:             }
  163:             ##
  164:             ## Determine if user can edit url.
  165:             ##
  166:             my $cfile='';
  167:             my $cfuname='';
  168:             my $cfudom='';
  169:             if ($ENV{'request.filename'}) {
  170:                 my $file=&Apache::lonnet::declutter($ENV{'request.filename'});
  171:                 $file=~s/^(\w+)\/(\w+)/\/priv\/$2/;
  172:                 # Chech that the user has permission to edit this resource
  173:                 ($cfuname,$cfudom)=&Apache::loncacc::constructaccess($file,$1);
  174:                 if (defined($cfudom)) {
  175:                     if (&Apache::lonnet::homeserver($cfuname,$cfudom) 
  176:                         eq $Apache::lonnet::perlvar{'lonHostID'}) {
  177:                         $cfile=$file;
  178:                     }
  179:                 }
  180:             }        
  181:             # Finally, turn the button on or off
  182:             if ($cfile) {
  183:                 $editbutton=&switch
  184:                     ('','',6,1,'cstr.gif','edit','resource',
  185:                      "go('".$cfile."');","Edit this resource");
  186:             } elsif ($editbutton eq '') {
  187:                 $editbutton=&clear(6,1);
  188:             }
  189:         }
  190:         ###
  191:         ###
  192: # Prepare the rest of the buttons
  193: 	my $menuitems=(<<ENDMENUITEMS);
  194: c&3&1
  195: s&2&1&back.gif&backward&&gopost('/adm/flip','back:'+currentURL)&Go to the previous resource in the course sequence&1
  196: s&2&3&forw.gif&forward&&gopost('/adm/flip','forward:'+currentURL)&Go to the next resource in the course sequence&1
  197: s&6&3&catalog.gif&catalog&info&catalog_info()&Show catalog information
  198: s&8&1&eval.gif&evaluate&this&gopost('/adm/evaluate',currentURL)&Provide my evaluation of this resource
  199: s&8&2&fdbk.gif&feedback&discuss&gopost('/adm/feedback',currentURL)&Provide feedback messages or contribute to the course discussion about this resource
  200: s&8&3&prt.gif&prepare&printout&gopost('/adm/printout',currentURL)&Prepare a printable document
  201: s&9&1&sbkm.gif&set&bookmark&set_bookmark()&Set a bookmark for this resource&2
  202: s&9&2&vbkm.gif&view&bookmark&edit_bookmarks()&Use or edit my bookmark collection&2
  203: s&9&3&anot.gif&anno-&tations&annotate()&Make notes and annotations about this resource&2
  204: ENDMENUITEMS
  205:         my $buttons='';
  206:         foreach (split(/\n/,$menuitems)) {
  207: 	    my ($command,@rest)=split(/\&/,$_);
  208:             if ($command eq 's') {
  209: 		$buttons.=&switch('','',@rest);
  210:             } else {
  211:                 $buttons.=&clear(@rest);
  212:             }
  213:         }
  214:         if ($textual) {
  215: # Registered, textual output
  216:             my $utility=&utilityfunctions();
  217:             my $form=&serverform();
  218: 	    $result =(<<ENDREGTEXT);
  219: <script>
  220: // BEGIN LON-CAPA Internal
  221: $utility
  222: </script>
  223: $timesync
  224: $newmail
  225: $buttons
  226: $hwkadd
  227: $editbutton
  228: $form
  229: <script>
  230: //END LON-CAPA Internal
  231: </script>
  232: 
  233: ENDREGTEXT
  234: # Registered, graphical output
  235:         } else {
  236: 	    $result = (<<ENDREGTHIS);
  237:      
  238: <script language="JavaScript">
  239: // BEGIN LON-CAPA Internal
  240: var swmenu=null;
  241: 
  242:     function LONCAPAreg() {
  243: 	  swmenu=$reopen;
  244:           swmenu.clearTimeout(swmenu.menucltim);
  245:           $timesync
  246:           $newmail
  247:           $buttons
  248: 	  swmenu.currentURL=window.location.pathname;
  249:           swmenu.reloadURL=window.location.pathname+window.location.search;
  250:           swmenu.currentSymb="$ENV{'request.symb'}";
  251:           swmenu.reloadSymb="$ENV{'request.symb'}";
  252:           swmenu.currentStale=0;
  253:           $hwkadd
  254:           $editbutton
  255:     }
  256: 
  257:     function LONCAPAstale() {
  258: 	  swmenu=$reopen
  259:           swmenu.currentStale=1;
  260:           if (swmenu.reloadURL!='' && swmenu.reloadURL!= null) { 
  261:              swmenu.switchbutton
  262:              (3,1,'reload.gif','return','location','go(reloadURL)','Return to the last known location in the course sequence');
  263: 	  }
  264:           swmenu.clearbut(7,1);
  265:           swmenu.clearbut(7,2);
  266:           swmenu.clearbut(7,3);
  267:           swmenu.menucltim=swmenu.setTimeout(
  268:  'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+
  269:  'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3);clearbut(6,1)',
  270: 			  2000);
  271: 
  272:       }
  273: 
  274: // END LON-CAPA Internal
  275: </script>
  276: ENDREGTHIS
  277:         }
  278: # =============================================================================
  279:     } else {
  280: # ========================================== This can or will not be registered
  281:         if ($textual) {
  282: # Not registered, textual
  283: 	    $result= (<<ENDDONOTREGTEXT);
  284: ENDDONOTREGTEXT
  285:         } else {
  286: # Not registered, graphical
  287:            $result = (<<ENDDONOTREGTHIS);
  288: 
  289: <script language="JavaScript">
  290: // BEGIN LON-CAPA Internal
  291: var swmenu=null;
  292: 
  293:     function LONCAPAreg() {
  294: 	  swmenu=$reopen
  295:           $timesync
  296:           swmenu.currentStale=1;
  297:           swmenu.clearbut(2,1);
  298:           swmenu.clearbut(2,3);
  299:           swmenu.clearbut(8,1);
  300:           swmenu.clearbut(8,2);
  301:           swmenu.clearbut(8,3);
  302:           if (swmenu.currentURL) {
  303:              swmenu.switchbutton
  304:               (3,1,'reload.gif','return','location','go(currentURL)');
  305:  	  } else {
  306: 	      swmenu.clearbut(3,1);
  307:           }
  308:     }
  309: 
  310:     function LONCAPAstale() {
  311:     }
  312: 
  313: // END LON-CAPA Internal
  314: </script>
  315: ENDDONOTREGTHIS
  316:        }
  317: # =============================================================================
  318:     }
  319:     return $result;
  320: }
  321: 
  322: sub loadevents() {
  323:     return 'LONCAPAreg();';
  324: }
  325: 
  326: sub unloadevents() {
  327:     return 'LONCAPAstale();';
  328: }
  329: 
  330: # ============================================================= Start up remote
  331: 
  332: sub startupremote {
  333:     my ($lowerurl)=@_;
  334:     if ($ENV{'browser.interface'} eq 'textual') {
  335:      return ('<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url='.$lowerurl.'" />');
  336:     }
  337:     my $configmenu=&rawconfig();
  338:     return(<<ENDREMOTESTARTUP);
  339: <script>
  340: 
  341: function wheelswitch() {
  342:    if (window.status=='|') { 
  343:       window.status='/'; 
  344:    } else {
  345:       if (window.status=='/') {
  346:          window.status='-';
  347:       } else {
  348:          if (window.status=='-') { 
  349:             window.status='\\\\'; 
  350:          } else {
  351:             if (window.status=='\\\\') { window.status='|'; }
  352:          }
  353:       }
  354:    } 
  355: }
  356: 
  357: // ---------------------------------------------------------- The wait function
  358: var canceltim;
  359: function wait() {
  360:    if ((menuloaded==1) || (tim==1)) {
  361:       window.status='Done.';
  362:       if (tim==0) {
  363:          clearTimeout(canceltim);
  364:          $configmenu
  365:          window.location='$lowerurl';  
  366:       } else {
  367:          alert("Remote Control timed out. It is possible that it was blocked by pop-up window filters.");
  368:       }
  369:    } else {
  370:       wheelswitch();
  371:       setTimeout('wait();',200);
  372:    }
  373: }
  374: 
  375: function main() {
  376:    canceltim=setTimeout('tim=1;',60000);
  377:    window.status='-';
  378:    wait();
  379: }
  380: 
  381: </script>
  382: ENDREMOTESTARTUP
  383: }
  384: 
  385: sub setflags() {
  386:     return(<<ENDSETFLAGS);
  387: <script>
  388:     menuloaded=0;
  389:     tim=0;
  390: </script>
  391: ENDSETFLAGS
  392: }
  393: 
  394: sub maincall() {
  395:     if ($ENV{'browser.interface'} eq 'textual') { return ''; }
  396:     return(<<ENDMAINCALL);
  397: <script>
  398:     main();
  399: </script>
  400: ENDMAINCALL
  401: }
  402: # ================================================================= Reopen menu
  403: 
  404: sub reopenmenu {
  405:    if ($ENV{'browser.interface'} eq 'textual') { return ''; }
  406:    my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
  407:    my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
  408:    return('window.open('.$nothing.',"'.$menuname.'","",false);');
  409: } 
  410: 
  411: # =============================================================== Open the menu
  412: 
  413: sub open {
  414:     my $returnval='';
  415:     if ($ENV{'browser.interface'} eq 'textual') { return ''; }
  416:     my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
  417:     unless (shift eq 'unix') {
  418: # resizing does not work on linux because of virtual desktop sizes
  419:        $returnval.=(<<ENDRESIZE);
  420: if (window.screen) {
  421:     self.resizeTo(screen.availWidth-215,screen.availHeight-55);
  422:     self.moveTo(190,15);
  423: }
  424: ENDRESIZE
  425:     }
  426:     $returnval.=(<<ENDOPEN);
  427: window.status='Opening LON-CAPA Remote Control';
  428: var menu=window.open("/res/adm/pages/menu.html","$menuname",
  429: "height=350,width=150,scrollbars=no,menubar=no,top=5,left=5,screenX=5,screenY=5");
  430: ENDOPEN
  431:     return '<script>'.$returnval.'</script>';
  432: }
  433: 
  434: 
  435: # ================================================================== Raw Config
  436: 
  437: sub clear {
  438:     my ($row,$col)=@_;
  439:     unless ($ENV{'browser.interface'} eq 'textual') {
  440:        return "\n".qq(window.status+='.';swmenu.clearbut($row,$col););
  441:    } else { return ''; }
  442: }
  443: 
  444: # ============================================ Switch a button or create a link
  445: # Switch acts on the javascript that is executed when a button is clicked.  
  446: # The javascript is usually similar to "go('/adm/roles')" or "cstrgo(..)".
  447: 
  448: sub switch {
  449:     my ($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc,$nobreak)=@_;
  450:     $act=~s/\$uname/$uname/g;
  451:     $act=~s/\$udom/$udom/g;
  452:     unless ($ENV{'browser.interface'} eq 'textual') {
  453:        return "\n".
  454:  qq(window.status+='.';swmenu.switchbutton($row,$col,"$img","$top","$bot","$act","$desc"););
  455:    } else {
  456:        if ($nobreak==2) { return ''; }
  457:        my $text=$top.' '.$bot;
  458:        $text=~s/\- //;
  459:        return "\n".($nobreak?' ':'<br />').
  460:         '<a href="javascript:'.$act.';" target="_top">'.$text.'</a> '.
  461:         ($nobreak?'':$desc);
  462:    }
  463: }
  464: 
  465: sub secondlevel {
  466:     my $output='';
  467:     my 
  468:     ($uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc)=@_;
  469:     if ($prt eq 'any') {
  470: 	   $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
  471:     } elsif ($prt=~/^r(\w+)/) {
  472:         if ($rol eq $1) {
  473:            $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
  474:         }
  475:     }
  476:     return $output;
  477: }
  478: 
  479: sub openmenu {
  480:     my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
  481:     if ($ENV{'browser.interface'} eq 'textual') { return ''; }
  482:     my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
  483:     return "window.open(".$nothing.",'".$menuname."');";
  484: }
  485: 
  486: sub rawconfig {
  487:     my $textualoverride=shift;
  488:     my $output='';
  489:     unless ($ENV{'browser.interface'} eq 'textual') {
  490:        $output.=
  491:  "window.status='Opening Remote Control';var swmenu=".&openmenu().
  492: "\nwindow.status='Configuring Remote Control ';";
  493:     } else {
  494:        unless ($textualoverride) { return ''; }
  495:     }
  496:     my $uname=$ENV{'user.name'};
  497:     my $udom=$ENV{'user.domain'};
  498:     my $adv=$ENV{'user.adv'};
  499:     my $author=$ENV{'user.author'};
  500:     my $crs='';
  501:     if ($ENV{'request.course.id'}) {
  502:        $crs='/'.$ENV{'request.course.id'};
  503:        if ($ENV{'request.course.sec'}) {
  504: 	   $crs.='_'.$ENV{'request.course.sec'};
  505:        }
  506:        $crs=~s/\_/\//g;
  507:     }
  508:     my $pub=($ENV{'request.state'} eq 'published');
  509:     my $con=($ENV{'request.state'} eq 'construct');
  510:     my $rol=$ENV{'request.role'};
  511:     my $requested_domain = $ENV{'request.role.domain'};
  512:     foreach (@desklines) {
  513:         my ($row,$col,$pro,$prt,$img,$top,$bot,$act,$desc)=split(/\:/,$_);
  514:         $prt=~s/\$uname/$uname/g;
  515:         $prt=~s/\$udom/$udom/g;
  516:         $prt=~s/\$crs/$crs/g; 
  517:         $prt=~s/\$requested_domain/$requested_domain/g;
  518:         if ($pro eq 'clear') {
  519: 	    $output.=&clear($row,$col);
  520:         } elsif ($pro eq 'any') {
  521:                $output.=&secondlevel(
  522: 	  $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc);
  523: 	} elsif ($pro eq 'smp') {
  524:             unless ($adv) {
  525:                $output.=&secondlevel(
  526:           $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc);
  527:             }
  528:         } elsif ($pro eq 'adv') {
  529:             if ($adv) {
  530:                $output.=&secondlevel(
  531: 	  $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc);
  532:             }
  533:         } elsif (($pro=~/p(\w+)/) && ($prt)) {
  534: 	    if (&Apache::lonnet::allowed($1,$prt)) {
  535:                $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
  536:             }
  537:         } elsif ($pro eq 'course') {
  538:             if ($ENV{'request.course.fn'}) {
  539:                $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
  540: 	    }
  541:         } elsif ($pro eq 'author') {
  542:             if ($author) {
  543:                 if ((($prt eq 'rca') && ($ENV{'request.role'}=~/^ca/)) ||
  544:                     (($prt eq 'rau') && ($ENV{'request.role'}=~/^au/))) {
  545:                     # Check that we are on the correct machine
  546:                     my $cadom=$requested_domain;
  547:                     my $caname=$ENV{'user.name'};
  548:                     if ($prt eq 'rca') {
  549: 		       ($cadom,$caname)=
  550:                                ($ENV{'request.role'}=~/(\w+)\/(\w+)$/);
  551:                     }                       
  552:                     $act =~ s/\$caname/$caname/g;
  553:                     my $home = &Apache::lonnet::homeserver($caname,$cadom);
  554:                     if ($home eq $Apache::lonnet::perlvar{'lonHostID'}) {
  555:                         $output.=switch($caname,$cadom,
  556:                                         $row,$col,$img,$top,$bot,$act,$desc);
  557:                     }
  558:                 }
  559:             }
  560:         }
  561:     }
  562:     unless ($ENV{'browser.interface'} eq 'textual') {
  563:        $output.="\nwindow.status='Synchronizing Time';swmenu.syncclock(1000*".time.");\nwindow.status='Remote Control Configured.';";
  564:     }
  565:     return $output;
  566: }
  567: 
  568: # ======================================================================= Close
  569: 
  570: sub close {
  571:     if ($ENV{'browser.interface'} eq 'textual') { return ''; }
  572:     my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
  573:     return(<<ENDCLOSE);
  574: <script>
  575: window.status='Accessing Remote Control';
  576: menu=window.open("/adm/rat/empty.html","$menuname",
  577:                  "height=350,width=150,scrollbars=no,menubar=no");
  578: window.status='Disabling Remote Control';
  579: menu.active=0;
  580: menu.autologout=0;
  581: window.status='Closing Remote Control';
  582: menu.close();
  583: window.status='Done.';
  584: </script>
  585: ENDCLOSE
  586: }
  587: 
  588: # ====================================================================== Footer
  589: 
  590: sub footer {
  591: 
  592: }
  593: 
  594: sub utilityfunctions {
  595:     unless ($ENV{'browser.interface'} eq 'textual') { return ''; }
  596:     my $currenturl=$ENV{'REQUEST_URI'};
  597:     my $currentsymb=$ENV{'request.symb'};
  598: return (<<ENDUTILITY)
  599: 
  600:     var currentURL="$currenturl";
  601:     var reloadURL="$currenturl";
  602:     var currentSymb="$currentsymb";
  603: 
  604: function go(url) {
  605:    if (url!='' && url!= null) {
  606:        currentURL = null;
  607:        currentSymb= null;
  608:        window.location.href=url;
  609:    }
  610: }
  611: 
  612: function gopost(url,postdata) {
  613:    if (url!='') {
  614:       this.document.server.action=url;
  615:       this.document.server.postdata.value=postdata;
  616:       this.document.server.command.value='';
  617:       this.document.server.url.value='';
  618:       this.document.server.symb.value='';
  619:       this.document.server.submit();
  620:    }
  621: }
  622: 
  623: function gocmd(url,cmd) {
  624:    if (url!='') {
  625:       this.document.server.action=url;
  626:       this.document.server.postdata.value='';
  627:       this.document.server.command.value=cmd;
  628:       this.document.server.url.value=currentURL;
  629:       this.document.server.symb.value=currentSymb;
  630:       this.document.server.submit();
  631:    }
  632: }
  633: ENDUTILITY
  634: }
  635: 
  636: sub serverform {
  637:     return(<<ENDSERVERFORM);
  638: 
  639: <form name="server" action="/adm/logout" method="post">
  640: <input type="hidden" name="postdata" value="none" />
  641: <input type="hidden" name="command" value="none" />
  642: <input type="hidden" name="url" value="none" />
  643: <input type="hidden" name="symb" value="none" />
  644: </form>
  645: ENDSERVERFORM
  646: }
  647: # ================================================ Handler when called directly
  648: 
  649: 
  650: sub handler {
  651:     my $r = shift;
  652:     $r->content_type('text/html');
  653:     $r->send_http_header;
  654:     return OK if $r->header_only;
  655: 
  656:     my $utility=&utilityfunctions();
  657:     my $form=&serverform();
  658:     my $bodytag=&Apache::loncommon::bodytag('Main Menu');
  659: # ------------------------------------------------------------ Print the screen
  660:     $r->print(<<ENDHEADER);
  661: <html><head>
  662: <title>LON-CAPA Main Menu</title>
  663: <script>
  664: $utility
  665: </script>
  666: </head>
  667: $bodytag
  668: ENDHEADER
  669:     $r->print(&rawconfig(1).$form);
  670:     $r->print('</body></html>');
  671:     return OK;
  672: }
  673: 
  674: # ================================================================ Main Program
  675: 
  676: BEGIN {
  677:   if (! defined($readdesk)) {
  678:    {
  679:     my $config=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
  680: 				  '/mydesk.tab');
  681:     while (my $configline=<$config>) {
  682:        $configline=(split(/\#/,$configline))[0];
  683:        $configline=~s/^\s+//;
  684:        chomp($configline);
  685:        if ($configline) {
  686:           $desklines[$#desklines+1]=$configline;
  687:        }
  688:     }
  689:    }
  690:    $readdesk='done';
  691:   }
  692: }
  693: 
  694: 1;
  695: __END__
  696: 
  697: 
  698: 
  699: 
  700: 
  701: 
  702: