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Up to [LON-CAPA] / loncom / interface

Fix bugs #3640, 3631, 3630, 3628.  Menu buttons eliminated when viewing directories in iCSTR in remoteless mode. Directory position and selection now directly below top menu bar. Directory location larger font, headings for directory options (remoteless only) smaller font. Certain directory actions directed to top, (to escape frame), to avoid nesting frames.

# The LearningOnline Network with CAPA
# Routines to control the menu
#
# $Id: lonmenu.pm,v 1.131 2004/11/30 19:08:18 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
#
# There are two parameters controlling the action of this module:
#
# browser.interface - if this is 'textual', it overrides the second parameter
# and goes to screen reader PDA mode
#
# environment.remote - if this is 'on', the routines controll the remote
# control, otherwise they render the main window controls; ignored it
# browser.interface is 'textual'
#

package Apache::lonmenu;

use strict;
use Apache::lonnet();
use Apache::Constants qw(:common);
use Apache::lonhtmlcommon();
use Apache::loncommon();
use Apache::lonenc();
use Apache::lonlocal;

use vars qw(@desklines $readdesk);


my @inlineremote;
my $font;
my $tabbg;
my $pgbg;

# ================================================================ Little texts

sub initlittle {
    return &Apache::lonlocal::texthash('ret' => 'Return to Last Location',
				       'nav' => 'Navigate Contents',
				       'main' => 'Main Menu',
				       'launch' => 'Launch Remote Control');
}

# ============================= This gets called at the top of the body section

sub menubuttons {
    my $forcereg=shift;
    my $target  =shift;
    my $registration=shift;
    my $titletable=shift;
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
					    ['inhibitmenu']);
    if ($ENV{'form.inhibitmenu'} eq 'yes') { return ''; }

    my $navmaps='';
    my $reloadlink='';
    my $escurl=&Apache::lonnet::escape(&Apache::lonenc::check_encrypt($ENV{'request.noversionuri'}));
    my $escsymb=&Apache::lonnet::escape(&Apache::lonenc::check_encrypt($ENV{'request.symb'}));
    if ($ENV{'browser.interface'} eq 'textual') {
# Textual display only
	my %lt=&initlittle();
        $pgbg='#FFFFFF';
        $tabbg='#FFFFFF';
	$font='#000000';
        if ($ENV{'request.course.id'}) {
	    $navmaps=(<<ENDNAV);
<a href="/adm/navmaps?postdata=$escurl&postsymb=$escsymb" target="_top">$lt{'nav'}</a>
ENDNAV
            if (($ENV{'request.noversionuri'}=~/^\/adm\//) &&
         ($ENV{'request.noversionuri'}!~/^\/adm\/wrapper\//) &&
         ($ENV{'request.noversionuri'}!~/^\/adm\/.*\/(smppg|bulletinboard|aboutme)(\?|$)/)) {
                my $escreload=&Apache::lonnet::escape('return:');
                $reloadlink=(<<ENDRELOAD);
<a href="/adm/flip?postdata=$escreload" target="_top"><font color="$font">$lt{'ret'}</font></a>
ENDRELOAD
            }
        }
        my $form=&serverform();
        my $utility=&utilityfunctions();
	my $output=(<<ENDMAINMENU);
<script type="text/javascript">
// BEGIN LON-CAPA Internal
$utility
</script>
<a href="/adm/menu" target="_top">$lt{'main'}</a>
$reloadlink $navmaps<br />
<script type="text/javascript">
// END LON-CAPA Internal
</script>
$form
ENDMAINMENU
        if ($registration) { $output.=&innerregister($forcereg,$target); }
	return $output."<hr />";
    } elsif ($ENV{'environment.remote'} eq 'off') {
# Remote Control is switched off
# figure out colors
	my %lt=&initlittle();
	my $function='student';
        if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
	    $function='coordinator';
        }
	if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
            $function='admin';
        }
        if (($ENV{'request.role'}=~/^(au|ca)/) ||
            ($ENV{'request.noversionuri'}=~/^(\/priv|\~)/)) {
            $function='author';
        }
        my $domain=&Apache::loncommon::determinedomain();
        $pgbg=&Apache::loncommon::designparm($function.'.pgbg',$domain);
        $tabbg=&Apache::loncommon::designparm($function.'.tabbg',$domain);
        $font=&Apache::loncommon::designparm($function.'.font',$domain);
        my $link=&Apache::loncommon::designparm($function.'.link',$domain);
        my $alink=&Apache::loncommon::designparm($function.'.alink',$domain);
        my $vlink=&Apache::loncommon::designparm($function.'.vlink',$domain);
        my $sidebg=&Apache::loncommon::designparm($function.'.sidebg',$domain);
# Do we have a NAV link?
        if ($ENV{'request.course.id'}) {
        	    $navmaps=(<<ENDNAV);
<td bgcolor="$tabbg">
<a href="javascript:gonav('/adm/navmaps?postdata=$escurl&amp;postsymb=$escsymb')"><font color="$font">$lt{'nav'}</font></a></td>
ENDNAV
	    if (($ENV{'request.noversionuri'}=~/^\/adm\//) &&
                ($ENV{'request.noversionuri'}!~/^\/adm\/wrapper\//) &&
         ($ENV{'request.noversionuri'}!~/^\/adm\/.*\/(smppg|bulletinboard|aboutme)(\?|$)/)) {
                my $escreload=&Apache::lonnet::escape('return:');
                $reloadlink=(<<ENDRELOAD);
<td bgcolor="$tabbg">
<a href="/adm/flip?postdata=$escreload" target="_top"><font color="$font">$lt{'ret'}</font></a></td>
ENDRELOAD
            }
        }
        my $reg='';
        if ($registration) {
           $reg=&innerregister($forcereg,$target,$titletable);
        }
        my $form=&serverform();
	my $utility=&utilityfunctions();
	return (<<ENDINLINEMENU);
<script type="text/javascript">
// BEGIN LON-CAPA Internal
$utility
</script>
<font face="Arial,Helvetica,sans-serif"><table bgcolor="$pgbg" width="100%" border="0" cellpadding="1" cellspacing="1">
<tr>
<td bgcolor="$tabbg">
<a href="/adm/menu" target="_top"><font color="$font">$lt{'main'}</font></a>
</td>
$reloadlink
$navmaps
<td bgcolor="$tabbg">
<a href="/adm/remote?action=launch&amp;url=$escurl" target="_top">
<font color="$font">$lt{'launch'}</font></a></td>
<td bgcolor="$tabbg">
<img align="right" src="/adm/lonIcons/minilogo.gif" />
<b>LON-CAPA</b></td>
$form
</tr>
</table>
</font>
<script type="text/javascript">
// END LON-CAPA Internal
</script>
$reg
ENDINLINEMENU
    } else {
	return '';
    }
}

# ====================================== This gets called in the header section

sub registerurl {
    my $forcereg=shift;
    my $target = shift;
    my $result = '';
    if ($ENV{'request.noversionuri'} eq '/res/adm/pages/menu.html') { return ''; }
    my $force_title='';
    if ($ENV{'request.state'} eq 'construct') {
	$force_title=&Apache::lonxml::display_title();
    }
    if ($target eq 'edit') {
        $result .="<script type=\"text/javascript\">\n".
            "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
            &Apache::loncommon::browser_and_searcher_javascript().
                "\n</script>\n";
    }
    if (($ENV{'browser.interface'} eq 'textual') ||
        ($ENV{'environment.remote'} eq 'off') ||
        ((($ENV{'request.publicaccess'}) || 
         (!&Apache::lonnet::is_on_map(
	   &Apache::lonnet::unescape($ENV{'request.noversionuri'})))) &&
        (!$forcereg))) {
 	return $result.
          '<script type="text/javascript">function LONCAPAreg(){;} function LONCAPAstale(){}</script>'.$force_title;
    }
# Graphical display after login only
    if ($Apache::lonxml::registered && !$forcereg) { return ''; }
    if ($target ne 'edit') {
	$result.=&innerregister($forcereg,$target);
    }
    return $result.$force_title;
}

# =========== This gets called in order to register a URL, both with the Remote
# =========== and in the body of the document

sub innerregister {
    my $forcereg=shift;
    my $target = shift;
    my $titletable = shift;
    my $result = '';
    my ($uname,$thisdisfn);
    my $const_space = ($ENV{'request.state'} eq 'construct');
    my $is_const_dir = 0;

    if ($ENV{'request.noversionuri'} eq '/res/adm/pages/menu.html') { return ''; }

    $Apache::lonxml::registered=1;

    my $textinter=($ENV{'browser.interface'} eq 'textual');
    my $noremote=($ENV{'environment.remote'} eq 'off');
    
    my $textual=($textinter || $noremote);

    @inlineremote=();
    undef @inlineremote;

    my $reopen=&Apache::lonmenu::reopenmenu();

    my $newmail='';
    if ($noremote) {
	$newmail='<font face="Arial,Helvetica,sans-serif"><table bgcolor="'.$pgbg.'" border="0" cellspacing="1" cellpadding="1" width="100%"><tr><td bgcolor="'.$tabbg.'">';
    }
    if (($textual) && ($ENV{'request.symb'}) && ($ENV{'request.course.id'})) {
	my ($mapurl,$rid,$resurl)=&Apache::lonnet::decode_symb($ENV{'request.symb'});
        $newmail.=$ENV{'course.'.$ENV{'request.course.id'}.'.description'};
        my $maptitle=&Apache::lonnet::gettitle($mapurl);
	my $restitle=&Apache::lonnet::gettitle($resurl);
        if ($maptitle) {
	    $newmail.=', '.$maptitle;
        }
        if ($restitle) {
	    $newmail.=': '.$restitle;
        }
        $newmail.='&nbsp;&nbsp;&nbsp;';
    }
    if (&Apache::lonmsg::newmail()) { 
       $newmail=($textual?
 '<b><a href="/adm/communicate" target="_top">You have new messages</a></b><br />':
                          'swmenu.setstatus("you have","messages");');
    }
    if ($ENV{'request.state'} eq 'construct') {
        $newmail = $titletable;
    }
    if ($noremote) {
	$newmail.='</td></tr></table></font>';
    }
    my $timesync=($textual?'':'swmenu.syncclock(1000*'.time.');');
    my $tablestart=($noremote?'<font face="Arial,Helvetica,sans-serif"><table bgcolor="'.$pgbg.'" border="0" cellspacing="1" cellpadding="1" width="100%">':'').($textinter?'<br /><a href="#content">'.&mt('Skip to Content').'</a><br />':'');
    my $tableend=($noremote?'</table></font>':'').($textinter?'<a name="content" />':'');
# =============================================================================
# ============================ This is for URLs that actually can be registered
    if (($ENV{'request.noversionuri'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
# -- This applies to homework problems for users with grading privileges
	my $crs='/'.$ENV{'request.course.id'};
	if ($ENV{'request.course.sec'}) {
	    $crs.='_'.$ENV{'request.course.sec'};
	}
	$crs=~s/\_/\//g;

        my $hwkadd='';
        if ($ENV{'request.filename'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
	    if (&Apache::lonnet::allowed('vgr',$crs)) {
		$hwkadd.=&switch('','',7,1,'subm.gif','view sub-[_1]','missions[_1]',
                       "gocmd('/adm/grades','submission')",
		       'View user submissions for this assessment resource');
            }
	    if (&Apache::lonnet::allowed('mgr',$crs)) {
		$hwkadd.=&switch('','',7,2,'pgrd.gif','problem[_1]','grades[_3]',
                       "gocmd('/adm/grades','gradingmenu')",
                       'Modify user grades for this assessment resource');
            }
	}
	if (&Apache::lonnet::allowed('opa',$crs)) {
	    $hwkadd.=&switch('','',7,3,'pparm.gif','problem[_2]','parms[_2]',
			     "gocmd('/adm/parmset','set')",
			     'Modify deadlines, etc, for this resource');
	}
# -- End Homework
        ###
        ### Determine whether or not to display the 'cstr' button for this
        ### resource
        ###
        my $editbutton = '';
        if ($ENV{'user.author'}) {
            if ($ENV{'request.role'}=~/^(ca|au)/) {
                # Set defaults for authors
                my ($top,$bottom) = ('con-','struct');
                my $action = "go('/priv/".$ENV{'user.name'}."');";
                my $cadom  = $ENV{'request.role.domain'};
                my $caname = $ENV{'user.name'};
                my $desc = "Enter my resource construction space";
                # Set defaults for co-authors
                if ($ENV{'request.role'} =~ /^ca/) { 
                    ($cadom,$caname)=($ENV{'request.role'}=~/(\w+)\/(\w+)$/);
                    ($top,$bottom) = ('co con-','struct');
                    $action = "go('/priv/".$caname."');";
                    $desc = "Enter construction space as co-author";
                }
                # Check that we are on the correct machine
                my $home = &Apache::lonnet::homeserver($caname,$cadom);
		my $allowed=0;
		my @ids=&Apache::lonnet::current_machine_ids();
		foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
		if (!$allowed) {
		    $editbutton=&switch('','',6,1,$top,,$bottom,$action,$desc);
                }
            }
            ##
            ## Determine if user can edit url.
            ##
            my $cfile='';
            my $cfuname='';
            my $cfudom='';
            if ($ENV{'request.filename'}) {
                my $file=&Apache::lonnet::declutter($ENV{'request.filename'});
                $file=~s/^(\w+)\/(\w+)/\/priv\/$2/;
                # Check that the user has permission to edit this resource
                ($cfuname,$cfudom)=&Apache::loncacc::constructaccess($file,$1);
                if (defined($cfudom)) {
		    my $home=&Apache::lonnet::homeserver($cfuname,$cfudom);
		    my $allowed=0;
		    my @ids=&Apache::lonnet::current_machine_ids();
		    foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
		    if ($allowed) {
                        $cfile=$file;
                    }
                }
            }        
            # Finally, turn the button on or off
            if ($cfile && !$const_space) {
                $editbutton=&switch
                    ('','',6,1,'cstr.gif','edit[_1]','resource[_2]',
                     "go('".$cfile."');","Edit this resource");
            } elsif ($editbutton eq '') {
                $editbutton=&clear(6,1);
            }
        }
        ###
        ###
# Prepare the rest of the buttons
        my $menuitems;
        if ($const_space) {
	    my ($uname,$thisdisfn) =
		($ENV{'request.filename'}=~m|^/home/([^/]+)/public_html/(.*)|);
            my $currdir = '/priv/'.$uname.'/'.$thisdisfn;
            if ($currdir =~ m-/$-) {
                $is_const_dir = 1;
            } else {
                $currdir =~ s#[^/]+$##;
                $menuitems=(<<ENDMENUITEMS);
s&6&1&list.gif&list[_1]&dir[_1]&golist('$currdir')&List current directory
s&6&2&rtrv.gif&retrieve[_1]&version[_1]&gocstr('/adm/retrieve','/~$uname/$thisdisfn')&Retrieve old version
s&6&3&pub.gif&publish[_1]&resource[_1]&gocstr('/adm/publish','/~$uname/$thisdisfn')&Publish this resource
s&7&1&del.gif&delete[_1]&resource[_2]&gocstr('/adm/cfile?action=delete','/~$uname/$thisdisfn')&Delete this resource
s&7&2&prt.gif&prepare[_1]&printout[_1]&gopost('/adm/printout','/~$uname/$thisdisfn')&Prepare a printable document
ENDMENUITEMS
            }
        } else {
	    $menuitems=(<<ENDMENUITEMS);
c&3&1
s&2&1&back.gif&backward[_1]&&gopost('/adm/flip','back:'+currentURL)&Go to the previous resource in the course sequence&1
s&2&3&forw.gif&forward[_1]&&gopost('/adm/flip','forward:'+currentURL)&Go to the next resource in the course sequence&3
c&6&3
c&8&1
c&8&2
s&8&3&prt.gif&prepare[_1]&printout[_1]&gopost('/adm/printout',currentURL)&Prepare a printable document
s&9&1&sbkm.gif&set[_1]&bookmark[_2]&set_bookmark()&Set a bookmark for this resource&2
s&9&3&anot.gif&anno-[_1]&tations[_1]&annotate()&Make notes and annotations about this resource&2
ENDMENUITEMS
            unless ($ENV{'request.noversionuri'}=~/\/(bulletinboard|smppg|navmaps|syllabus|aboutme)(\?|$)/) {
	        $menuitems.=(<<ENDREALRES);
s&6&3&catalog.gif&catalog[_1]&info[_1]&catalog_info()&Show catalog information
s&8&1&eval.gif&evaluate[_1]&this[_1]&gopost('/adm/evaluate',currentURL,1)&Provide my evaluation of this resource
s&8&2&fdbk.gif&feedback[_1]&discuss[_1]&gopost('/adm/feedback',currentURL,1)&Provide feedback messages or contribute to the course discussion about this resource
ENDREALRES
	    }
        }
        my $buttons='';
        foreach (split(/\n/,$menuitems)) {
	    my ($command,@rest)=split(/\&/,$_);
            if ($command eq 's') {
		$buttons.=&switch('','',@rest);
            } else {
                $buttons.=&clear(@rest);
            }
        }
        if ($textual) {
# Registered, textual output
	    my $inlinebuttons='';

	    if ($ENV{'browser.interface'} eq 'textual') {
		$inlinebuttons=
                        join('',map { (defined($_)?$_:'') } @inlineremote);
	    } else {
		$inlinebuttons=(<<ENDINLINE);
<tr><td>$inlineremote[21]</td><td>&nbsp;</td><td>$inlineremote[23]</td></tr>
<tr><td>$inlineremote[61]</td><td>$inlineremote[62]</td><td>$inlineremote[63]</td></tr>
<tr><td>$inlineremote[71]</td><td>$inlineremote[72]</td><td>$inlineremote[73]</td></tr>
<tr><td>$inlineremote[81]</td><td>$inlineremote[82]</td><td>$inlineremote[83]</td></tr>
<tr><td>$inlineremote[91]</td><td>$inlineremote[92]</td><td>$inlineremote[93]</td></tr>
ENDINLINE
	    }
            if ($const_space && $is_const_dir) {
                $inlinebuttons = '';
            }
	    $result =(<<ENDREGTEXT);
<script type="text/javascript">
// BEGIN LON-CAPA Internal
</script>
$timesync
$newmail
$tablestart
$inlinebuttons
$tableend
<script type="text/javascript">
// END LON-CAPA Internal
</script>

ENDREGTEXT
# Registered, graphical output
        } else {
	    my $requri=(split(/\?/,$ENV{'request.noversionuri'}))[0];
	    $requri=&Apache::lonenc::check_encrypt(&Apache::lonnet::unescape($requri));
	    my $cursymb=&Apache::lonenc::check_encrypt($ENV{'request.symb'});
	    my $navstatus=&get_nav_status();
	    $result = (<<ENDREGTHIS);
     
<script type="text/javascript">
// BEGIN LON-CAPA Internal
var swmenu=null;

    function LONCAPAreg() {
	  swmenu=$reopen;
          swmenu.clearTimeout(swmenu.menucltim);
          $timesync
          $newmail
          $buttons
	  swmenu.currentURL="$requri";
          swmenu.reloadURL=swmenu.currentURL+window.location.search;
          swmenu.currentSymb="$cursymb";
          swmenu.reloadSymb="$cursymb";
          swmenu.currentStale=0;
	  $navstatus
          $hwkadd
          $editbutton
    }

    function LONCAPAstale() {
	  swmenu=$reopen
          swmenu.currentStale=1;
          if (swmenu.reloadURL!='' && swmenu.reloadURL!= null) { 
             swmenu.switchbutton
             (3,1,'reload.gif','return','location','go(reloadURL)','Return to the last known location in the course sequence');
	  }
          swmenu.clearbut(7,1);
          swmenu.clearbut(7,2);
          swmenu.clearbut(7,3);
          swmenu.menucltim=swmenu.setTimeout(
 'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+
 'clearbut(9,1);clearbut(9,3);clearbut(6,3);clearbut(6,1)',
			  2000);
      }

// END LON-CAPA Internal
</script>
ENDREGTHIS
        }
# =============================================================================
    } else {
# ========================================== This can or will not be registered
        if ($textual) {
# Not registered, textual
	    $result= (<<ENDDONOTREGTEXT);
ENDDONOTREGTEXT
        } else {
# Not registered, graphical
           $result = (<<ENDDONOTREGTHIS);

<script type="text/javascript">
// BEGIN LON-CAPA Internal
var swmenu=null;

    function LONCAPAreg() {
	  swmenu=$reopen
          $timesync
          swmenu.currentStale=1;
          swmenu.clearbut(2,1);
          swmenu.clearbut(2,3);
          swmenu.clearbut(8,1);
          swmenu.clearbut(8,2);
          swmenu.clearbut(8,3);
          if (swmenu.currentURL) {
             swmenu.switchbutton
              (3,1,'reload.gif','return','location','go(currentURL)');
 	  } else {
	      swmenu.clearbut(3,1);
          }
    }

    function LONCAPAstale() {
    }

// END LON-CAPA Internal
</script>
ENDDONOTREGTHIS
       }
# =============================================================================
    }
    return $result;
}

sub loadevents() {
    if ($ENV{'request.noversionuri'} eq '/res/adm/pages/menu.html') { return ''; }
    return 'LONCAPAreg();';
}

sub unloadevents() {
    if ($ENV{'request.noversionuri'} eq '/res/adm/pages/menu.html') { return ''; }
    return 'LONCAPAstale();';
}

# ============================================================= Start up remote

sub startupremote {
    my ($lowerurl)=@_;
    if (($ENV{'browser.interface'} eq 'textual') ||
        ($ENV{'environment.remote'} eq 'off')) {
     return ('<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url='.$lowerurl.'" />');
    }
#
# The Remote actually gets launched!
#
    my $configmenu=&rawconfig();
    my $esclowerurl=&Apache::lonnet::escape($lowerurl);
    my $message=&mt('"Waiting for Remote Control window to load: "+[_1]','waited');
    return(<<ENDREMOTESTARTUP);
<script type="text/javascript">
var timestart;
function wheelswitch() {
    if (typeof(document.wheel) != 'undefined') {
	if (typeof(document.wheel.spin) != 'undefined') {
	    var date=new Date();
	    var waited=Math.round(30-((date.getTime()-timestart)/1000));
	    document.wheel.spin.value=$message;
	}
    }
   if (window.status=='|') { 
      window.status='/'; 
   } else {
      if (window.status=='/') {
         window.status='-';
      } else {
         if (window.status=='-') { 
            window.status='\\\\'; 
         } else {
            if (window.status=='\\\\') { window.status='|'; }
         }
      }
   } 
}

// ---------------------------------------------------------- The wait function
var canceltim;
function wait() {
   if ((menuloaded==1) || (tim==1)) {
      window.status='Done.';
      if (tim==0) {
         clearTimeout(canceltim);
         $configmenu
         window.location='$lowerurl';  
      } else {
	  window.location='/adm/remote?action=collapse&url=$esclowerurl';
      }
   } else {
      wheelswitch();
      setTimeout('wait();',200);
   }
}

function main() {
   canceltim=setTimeout('tim=1;',30000);
   window.status='-';
   var date=new Date();
   timestart=date.getTime();
   wait();
}

</script>
ENDREMOTESTARTUP
}

sub setflags() {
    return(<<ENDSETFLAGS);
<script type="text/javascript">
    menuloaded=0;
    tim=0;
</script>
ENDSETFLAGS
}

sub maincall() {
    if (($ENV{'browser.interface'} eq 'textual') ||
        ($ENV{'environment.remote'} eq 'off')) { return ''; }
    return(<<ENDMAINCALL);
<script type="text/javascript">
    main();
</script>
ENDMAINCALL
}

sub load_remote_msg {
    my ($lowerurl)=@_;

    if (($ENV{'browser.interface'} eq 'textual') ||
        ($ENV{'environment.remote'} eq 'off')) { return ''; }

    my $esclowerurl=&Apache::lonnet::escape($lowerurl);
    my $link=&mt('<a href="[_1]">Continue</a> on in Inline Menu mode',
		    "/adm/remote?action=collapse?url=$esclowerurl");
    return(<<ENDREMOTEFORM);
<p>
<form name="wheel">
<input name="spin" type="text" size="60" />
</form>
</p>
<p>$link</p>
ENDREMOTEFORM
}
# ================================================================= Reopen menu

sub reopenmenu {
   if (($ENV{'browser.interface'} eq 'textual') ||
       ($ENV{'environment.remote'} eq 'off')) { return ''; }
   my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
   my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
   return('window.open('.$nothing.',"'.$menuname.'","",false);');
} 

# =============================================================== Open the menu

sub open {
    my $returnval='';
    if (($ENV{'browser.interface'} eq 'textual') ||
        ($ENV{'environment.remote'} eq 'off')) { 
	return '<script type="text/javascript">self.name="loncapaclient";</script>';
    }
    my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
    unless (shift eq 'unix') {
# resizing does not work on linux because of virtual desktop sizes
       $returnval.=(<<ENDRESIZE);
if (window.screen) {
    self.resizeTo(screen.availWidth-215,screen.availHeight-55);
    self.moveTo(190,15);
}
ENDRESIZE
    }
    $returnval.=(<<ENDOPEN);
window.status='Opening LON-CAPA Remote Control';
var menu=window.open("/res/adm/pages/menu.html","$menuname",
"height=350,width=150,scrollbars=no,menubar=no,top=5,left=5,screenX=5,screenY=5");
self.name='loncapaclient';
ENDOPEN
    return '<script type="text/javascript">'.$returnval.'</script>';
}


# ================================================================== Raw Config

sub clear {
    my ($row,$col)=@_;
    unless (($ENV{'browser.interface'} eq 'textual') ||
            ($ENV{'environment.remote'} eq 'off')) {
       return "\n".qq(window.status+='.';swmenu.clearbut($row,$col););
   } else { 
       $inlineremote[10*$row+$col]='';
       return ''; 
   }
}

# ============================================ Switch a button or create a link
# Switch acts on the javascript that is executed when a button is clicked.  
# The javascript is usually similar to "go('/adm/roles')" or "cstrgo(..)".

sub switch {
    my ($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc,$nobreak)=@_;
    $act=~s/\$uname/$uname/g;
    $act=~s/\$udom/$udom/g;
    $top=&mt($top);
    $bot=&mt($bot);
    $desc=&mt($desc);
    $img=&mt($img);
    unless (($ENV{'browser.interface'} eq 'textual')  ||
            ($ENV{'environment.remote'} eq 'off')) {
# Remote
       return "\n".
 qq(window.status+='.';swmenu.switchbutton($row,$col,"$img","$top","$bot","$act","$desc"););
   } elsif ($ENV{'browser.interface'} eq 'textual') {
# Accessibility
       if ($nobreak==2) { return ''; }
       my $text=$top.' '.$bot;
       $text=~s/\s*\-\s*//gs;
       if ($nobreak) {
	   $inlineremote[10*$row+$col]=
	       '<a href="javascript:'.$act.';">'.$text.'</a>';
       } else {
	   $inlineremote[10*$row+$col]="\n<br />".
	       $desc.' <a href="javascript:'.$act.';">'.$text.'</a>';
       }
   } else {
# Inline Remote
       if ($nobreak==2) { return ''; }
       my $text=$top.' '.$bot;
       $text=~s/\s*\-\s*//gs;

       my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
       if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
       my $pic=
	   '<img border="0" alt="'.$text.'" src="http://'.$ENV{'HTTP_HOST'}.
	   ':'.$lonhttpdPort.'/res/adm/pages/'.$img.'" align="'.
	   ($nobreak==3?'right':'left').'" />';
       if (($ENV{'browser.interface'} eq 'textual') || ($ENV{'browser.interface'} eq 'faketextual')) {
# Accessibility
	   if ($nobreak==3) {
	       $inlineremote[10*$row+$col]="\n".
		   '<td width="40%" align="right"><font color="'.$font.'" size="+1">'.$text.
		   '</font></td><td width="10%" align="right" bgcolor="'.$tabbg.'">'.
		   '<a href="javascript:'.$act.';">'.$pic.'</a></td></tr>';
	   } elsif ($nobreak) {
	       $inlineremote[10*$row+$col]="\n<tr>".
		   '<td width="10%" align="left" bgcolor="'.$tabbg.'">'.
		   '<a href="javascript:'.$act.';">'.$pic.
		   '</a></td><td width="40%" align="left"><font color="'.$font.'" size="+1">'.$text.'</font></td>';
	   } else {
	       $inlineremote[10*$row+$col]="\n<tr>".
		   '<td width="10%" align="left" bgcolor="'.$tabbg.'">'.
		   '<a href="javascript:'.$act.';">'.$pic.
		   '</a></td><td colspan="3"><font color="'.$font.'">'.$desc.
		   '</font></td></tr>';       
	   }
       } else {
# Inline Menu
	   $inlineremote[10*$row+$col]=
		   '<a href="javascript:'.$act.';">'.$pic.
		   '</a><font color="'.$font.'" size="2">'.$desc.
		   '</font>';
       }
   }
    return '';
}

sub secondlevel {
    my $output='';
    my 
    ($uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc)=@_;
    if ($prt eq 'any') {
	   $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
    } elsif ($prt=~/^r(\w+)/) {
        if ($rol eq $1) {
           $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
        }
    }
    return $output;
}

sub openmenu {
    my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
    if (($ENV{'browser.interface'} eq 'textual') ||
        ($ENV{'environment.remote'} eq 'off')) { return ''; }
    my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
    return "window.open(".$nothing.",'".$menuname."');";
}

sub inlinemenu {
    @inlineremote=();
    undef @inlineremote;
    &rawconfig(1);
    return join('',map { (defined($_)?$_:'') } @inlineremote);
}

sub rawconfig {
    my $textualoverride=shift;
    my $output='';
    unless (($ENV{'browser.interface'} eq 'textual') ||
            ($ENV{'environment.remote'} eq 'off')) {
       $output.=
 "window.status='Opening Remote Control';var swmenu=".&openmenu().
"\nwindow.status='Configuring Remote Control ';";
    } else {
       unless ($textualoverride) { return ''; }
    }
    my $uname=$ENV{'user.name'};
    my $udom=$ENV{'user.domain'};
    my $adv=$ENV{'user.adv'};
    my $author=$ENV{'user.author'};
    my $crs='';
    if ($ENV{'request.course.id'}) {
       $crs='/'.$ENV{'request.course.id'};
       if ($ENV{'request.course.sec'}) {
	   $crs.='_'.$ENV{'request.course.sec'};
       }
       $crs=~s/\_/\//g;
    }
    my $pub=($ENV{'request.state'} eq 'published');
    my $con=($ENV{'request.state'} eq 'construct');
    my $rol=$ENV{'request.role'};
    my $requested_domain = $ENV{'request.role.domain'};
    foreach (@desklines) {
        my ($row,$col,$pro,$prt,$img,$top,$bot,$act,$desc)=split(/\:/,$_);
        $prt=~s/\$uname/$uname/g;
        $prt=~s/\$udom/$udom/g;
        $prt=~s/\$crs/$crs/g; 
        $prt=~s/\$requested_domain/$requested_domain/g;
        if ($pro eq 'clear') {
	    $output.=&clear($row,$col);
        } elsif ($pro eq 'any') {
               $output.=&secondlevel(
	  $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc);
	} elsif ($pro eq 'smp') {
            unless ($adv) {
               $output.=&secondlevel(
          $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc);
            }
        } elsif ($pro eq 'adv') {
            if ($adv) {
               $output.=&secondlevel(
	  $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc);
            }
        } elsif (($pro=~/^p(\w+)/) && ($prt)) {
	    if (&Apache::lonnet::allowed($1,$prt)) {
               $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
            }
        } elsif ($pro eq 'course') {
            if ($ENV{'request.course.fn'}) {
               $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
	    }
        } elsif ($pro =~ /^courseenv_(.*)$/) {
            my $key = $1;
            if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$key}) {
                $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
            }
        } elsif ($pro =~ /^course_(.*)$/) {
            # Check for permissions inside of a course
            if (($ENV{'request.course.id'}) &&
                (&Apache::lonnet::allowed($1,$ENV{'request.course.id'}.
            ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))
                 )) {
                $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
	    }
        } elsif ($pro eq 'author') {
            if ($author) {
                if ((($prt eq 'rca') && ($ENV{'request.role'}=~/^ca/)) ||
                    (($prt eq 'rau') && ($ENV{'request.role'}=~/^au/))) {
                    # Check that we are on the correct machine
                    my $cadom=$requested_domain;
                    my $caname=$ENV{'user.name'};
                    if ($prt eq 'rca') {
		       ($cadom,$caname)=
                               ($ENV{'request.role'}=~/(\w+)\/(\w+)$/);
                    }                       
                    $act =~ s/\$caname/$caname/g;
                    my $home = &Apache::lonnet::homeserver($caname,$cadom);
		    my $allowed=0;
		    my @ids=&Apache::lonnet::current_machine_ids();
		    foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
		    if ($allowed) {
                        $output.=switch($caname,$cadom,
                                        $row,$col,$img,$top,$bot,$act,$desc);
                    }
                }
            }
        }
    }
    unless (($ENV{'browser.interface'} eq 'textual') ||
            ($ENV{'environment.remote'} eq 'off')) {
       $output.="\nwindow.status='Synchronizing Time';swmenu.syncclock(1000*".time.");\nwindow.status='Remote Control Configured.';";
       if (&Apache::lonmsg::newmail()) { 
	   $output.='swmenu.setstatus("you have","messages");';
       }
    }

    return $output;
}

# ======================================================================= Close

sub close {
    if (($ENV{'browser.interface'} eq 'textual') ||
        ($ENV{'environment.remote'} eq 'off')) { return ''; }
    my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
    return(<<ENDCLOSE);
<script type="text/javascript">
window.status='Accessing Remote Control';
menu=window.open("/adm/rat/empty.html","$menuname",
                 "height=350,width=150,scrollbars=no,menubar=no");
window.status='Disabling Remote Control';
menu.active=0;
menu.autologout=0;
window.status='Closing Remote Control';
menu.close();
window.status='Done.';
</script>
ENDCLOSE
}

# ====================================================================== Footer

sub footer {

}

sub nav_control_js {
    my $nav=($ENV{'environment.remotenavmap'} eq 'on');
    return (<<NAVCONTROL);
    var w_loncapanav_flag="$nav";


function gonav(url) {
   if (w_loncapanav_flag != 1) {
      gopost(url,'');
   }  else {
      navwindow=window.open(url,
                  "loncapanav","height=600,width=400,scrollbars=1"); 
   }
}
NAVCONTROL
}

sub utilityfunctions {
    unless (($ENV{'browser.interface'} eq 'textual')  ||
        ($ENV{'environment.remote'} eq 'off')) { return ''; }
    my $currenturl=&Apache::lonenc::check_encrypt($ENV{'request.noversionuri'});
    
    my $currentsymb=&Apache::lonenc::check_encrypt($ENV{'request.symb'});
    my $nav_control=&nav_control_js();
return (<<ENDUTILITY)

    var currentURL="$currenturl";
    var reloadURL="$currenturl";
    var currentSymb="$currentsymb";

$nav_control

function go(url) {
   if (url!='' && url!= null) {
       currentURL = null;
       currentSymb= null;
       window.location.href=url;
   }
}

function gopost(url,postdata) {
   if (url!='') {
      this.document.server.action=url;
      this.document.server.postdata.value=postdata;
      this.document.server.command.value='';
      this.document.server.url.value='';
      this.document.server.symb.value='';
      this.document.server.submit();
   }
}

function gocmd(url,cmd) {
   if (url!='') {
      this.document.server.action=url;
      this.document.server.postdata.value='';
      this.document.server.command.value=cmd;
      this.document.server.url.value=currentURL;
      this.document.server.symb.value=currentSymb;
      this.document.server.submit();
   }
}

function gocstr(url,filename) {
    if (url == '/adm/cfile?action=delete') {
        this.document.cstrdelete.filename.value = filename
        this.document.cstrdelete.submit();
        return;
    }
    if (url !='') {
        this.document.constspace.filename.value = filename;
        this.document.constspace.action = url;
        this.document.constspace.submit();
    }
}

function golist(url) {
   if (url!='' && url!= null) {
       currentURL = null;
       currentSymb= null;
       top.location.href=url;
   }
}



function catalog_info() {
   loncatinfo=window.open(window.location.pathname+'.meta',"LONcatInfo",'height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
}

function chat_win() {
   lonchat=window.open('/res/adm/pages/chatroom.html',"LONchat",'height=320,width=280,resizable=yes,location=no,menubar=no,toolbar=no');
}
ENDUTILITY
}

sub serverform {
    return(<<ENDSERVERFORM);

<form name="server" action="/adm/logout" method="post" target="_top">
<input type="hidden" name="postdata" value="none" />
<input type="hidden" name="command" value="none" />
<input type="hidden" name="url" value="none" />
<input type="hidden" name="symb" value="none" />
</form>
ENDSERVERFORM
}

sub constspaceform {
    return(<<ENDCONSTSPACEFORM);
<form name="constspace" action="/adm/logout" method="post" target="_top">
<input type="hidden" name="filename" value="" />
</form>
<form name="cstrdelete" action="/adm/cfile" method="post" target="_top">
<input type="hidden" name="action" value="delete" /> 
<input type="hidden" name="filename" value="" />
</form>
ENDCONSTSPACEFORM
}


sub get_nav_status {
    my $navstatus="swmenu.w_loncapanav_flag=";
    if ($ENV{'environment.remotenavmap'} eq 'on') {
	$navstatus.="1";
    } else {
	$navstatus.="-1";
    }
    return $navstatus;
}

# ================================================ Handler when called directly


sub handler {
    my $r = shift;
    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    return OK if $r->header_only;

    my $form;
    if ($ENV{'environment.remote'} ne 'off' &&
	$ENV{'browser.interface'} ne 'textual') {
	$form=&serverform();
    }
    my $bodytag=&Apache::loncommon::bodytag('Main Menu');
    my $function='student';
    if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
	$function='coordinator';
    }
    if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
	$function='admin';
    }
    if (($ENV{'request.role'}=~/^(au|ca)/) ||
	($ENV{'request.noversionuri'}=~/^(\/priv|\~)/)) {
	$function='author';
    }
    my $domain=&Apache::loncommon::determinedomain();
    $pgbg=&Apache::loncommon::designparm($function.'.pgbg',$domain);
    $tabbg=&Apache::loncommon::designparm($function.'.tabbg',$domain);
    $font=&Apache::loncommon::designparm($function.'.font',$domain);
# ---- Print the screen, pretent to be in text mode to generate text-based menu
    unless ($ENV{'browser.interface'} eq 'textual') {
	$ENV{'browser.interface'}='faketextual';
	$ENV{'environment.remote'}='off';
    }
    $r->print(<<ENDHEADER);
<html><head>
<title>LON-CAPA Main Menu</title>
</head>
$bodytag
ENDHEADER
    $r->print('<table>'.&inlinemenu().'</table>'.$form);
    $r->print('</body></html>');
    return OK;
}

# ================================================================ Main Program

BEGIN {
  if (! defined($readdesk)) {
   {
    my $tabfile = $Apache::lonnet::perlvar{'lonTabDir'}.'/mydesk.tab';
    if ( CORE::open( my $config,"<$tabfile") ) {
        while (my $configline=<$config>) {
            $configline=(split(/\#/,$configline))[0];
            $configline=~s/^\s+//;
            chomp($configline);
            if ($configline) {
                $desklines[$#desklines+1]=$configline;
            }
        }
        CORE::close($config);
    }
   }
   $readdesk='done';
  }
}

1;
__END__