# The LearningOnline Network
# Documents
#
# $Id: lonextresedit.pm,v 1.8.2.4.4.2 2023/07/05 18:41:20 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/
#

package Apache::lonextresedit;

use strict;
use Apache::Constants qw(:common :http);
use HTML::Entities;
use Apache::lonlocal;
use Apache::lonnet;
use Apache::loncommon;
use Apache::lonhtmlcommon;
use Apache::lonuserstate;
use LONCAPA::map();
use LONCAPA qw(:DEFAULT :match);

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

    return OK if $r->header_only;

    # Check for access
    if (! &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
        $env{'user.error.msg'}=
            $r->uri.":mdc:0:0:Cannot modify course content.";
            return HTTP_NOT_ACCEPTABLE;
    }

    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
    my $chome = $env{'course.'.$env{'request.course.id'}.'.home'};
    my ($supplementalflag,$updated,$output,$errormsg,$residx,$url,$title,
        $symb,$type);
    if (($env{'form.folderpath'} =~ /^supplemental/) && ($env{'form.suppurl'})) {
        $supplementalflag = 1;
        if (&unescape($env{'form.suppurl'}) =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
            $type = 'tool';
        }
    }
    if (($supplementalflag) || ($env{'form.symb'} =~ /^uploaded/)) {
        ($updated,$output,$errormsg,$residx,$url,$title,$symb) =
            &process_changes($supplementalflag,$cdom,$cnum,$chome);
        if ($supplementalflag) {
            if ($url ne &unescape($env{'form.suppurl'})) {
                 $env{'form.suppurl'} = $url;
            }
            if ($title ne $env{'form.title'}) {
                $env{'form.title'} = $title;
            }
            $env{'form.idx'} = $residx;
        } else {
            if ($symb ne $env{'form.symb'}) {
                $env{'form.symb'} = $symb;
            }
            if ($url =~ m{/adm/$cdom/$cnum/\d+/ext\.tool$}) {
                $type = 'tool';
            }
        }
    } else {
        $errormsg = &mt('Information about external resource to edit is missing.');
    }
    if ($updated) {
        my $msg = &mt('External Resource updated');
        if ($type eq 'tool') {
            $msg = &mt('External Tool updated');
        }
        $output = &Apache::lonhtmlcommon::confirm_success($msg);
    }
    if ($errormsg) {
        $errormsg = '<p class="LC_error">'.$errormsg.'</p>';
    }
    my %ltitools;
    if ($type eq 'tool') {
        my (%domtools,%crstools);
        my %tooltypes = &Apache::loncommon::usable_exttools();
        if ($tooltypes{'dom'}) {
            %domtools = &Apache::lonnet::get_domain_lti($cdom,'consumer');
        }
        if ($tooltypes{'crs'}) {
            %crstools = &Apache::lonnet::get_course_lti($cnum,$cdom,'consumer');
        }
        %ltitools = (
                      dom => \%domtools,
                      crs => \%crstools,
                    );
    }
    my $js = &Apache::lonhtmlcommon::scripttag(&extedit_javascript());
    my $pathitem = '<input type="hidden" name="folderpath" value="'.
                   &HTML::Entities::encode($env{'form.folderpath'},'<>&"').'" />';
    my $description = 'External Resource Editor';
    if ($type eq 'tool') {
        $description = 'External Tool Editor'; 
    }
    $r->print(&Apache::loncommon::start_page($description,$js).
              '<div class="LC_left_float">'.
              $output.
              $errormsg.
              &extedit_form($supplementalflag,$residx,$url,$title,$pathitem,undef,
                           'direct',$env{'form.symb'},$type,$cdom,$cnum,\%ltitools).
              '</div>'.&Apache::loncommon::end_page());
    return OK;
}

sub process_changes {
    my ($supplementalflag,$cdom,$cnum,$chome) = @_;
    my ($folder,$container,$output,$errormsg,$updated,$symb,$oldidx,$oldurl,$type,
        $oldtitle,$newidx,$newurl,$newtitle,$residx,$url,$title,$marker,$args);
    if ($env{'form.symb'}) {
        $symb = $env{'form.symb'};
        (my $map,$oldidx,$oldurl)=&Apache::lonnet::decode_symb($symb);
        if ($map =~ m{^uploaded/$cdom/$cnum/(default(_\d+|))\.(sequence|page)$}) {
            $folder = $1;
            $container = $3;
        }
        $oldtitle = &Apache::lonnet::gettitle($env{'form.symb'});
        if ($oldurl =~ m{^ext/(.+)$}) {
            my $external = $1;
            if ($external =~ m{^https://}) {
                $oldurl = $external;
            } else {
                $oldurl = 'http://'.$oldurl;
            }
            $type = 'ext';
        } else {
            $type = 'tool';
        }
    } elsif ($env{'form.folderpath'}) {
        $folder = &unescape( (split('&',$env{'form.folderpath'}))[-2] );
        $oldurl = &unescape($env{'form.suppurl'});
        $oldtitle = &unescape($env{'form.title'});
        $container = 'sequence';
        $supplementalflag = 1;
        if ($oldurl =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
            $type = 'tool';
        } else {
            $type = 'ext';
        }
    }
    $url = $oldurl;
    $title = $oldtitle;
    if ($env{'form.importdetail'}) {
        ($newtitle,$newurl,$newidx) =
            map {&unescape($_)} split(/\=/,$env{'form.importdetail'});
        if ($newurl =~ m{^(/adm/$cdom/$cnum/(\d+)/ext\.tool)\:?(.*)$}) {
            $newurl = $1;
            $marker = $2;
            $args = $3;
            if ((!$symb) && (!$supplementalflag)) {
                $symb = "uploaded/$cdom/$cnum/$folder.$container"."___$newidx"."___adm/$cdom/$cnum/$marker/ext.tool";
            }
        }
    }
    if ($supplementalflag) {
        $residx = $newidx;
    } else {
        $residx = $oldidx;
    }
    if ($folder && $container) {
        if ($env{'form.importdetail'}) {
            my ($errtext,$fatal,$mismatchedid,$needreload,$newgradable,@imports);
            if (!$supplementalflag) {
                if (($oldidx) && ($oldidx != $newidx)) {
                    $mismatchedid = 1;
                }
            }
            if ($mismatchedid) {
                $errormsg = 'Wrong item identifier';
            } elsif (($newtitle eq $oldtitle) && ($newurl eq $oldurl)) {
                if ($type eq 'tool') {
                    if ($args) {
                        ($updated,$newgradable,$errormsg) = &update_exttool($marker,$cdom,$cnum,
                                                                            $supplementalflag,$args);
                        if ($updated) {
                            if ($newgradable) {
                                my $map = "/uploaded/$cdom/$cnum/$folder.$container";
                                my ($errtext,$fatal) = &LONCAPA::map::mapread($map);
                                if ($fatal) {
                                    $errormsg = &mt('Update failed: [_1].',$errtext);
                                } else {
                                    &LONCAPA::map::storeparameter($residx,'parameter_0_gradable',
                                                                  $newgradable,'string_yesno');
                                    my ($outtext,$errtext) = &LONCAPA::map::storemap($map,1,1);
                                    if ($errtext) {
                                        $errormsg = &mt('Update failed: [_1].',$errtext);
                                    } else {
                                        $needreload = 1;
                                    }
                                }
                            }
                        } else {
                            $output = &mt('No change');
                        }
                    } else {
                        $output = &mt('No change');
                    }
                } else {
                    $output = &mt('No change');
                }
            } else {
                my $map = "/uploaded/$cdom/$cnum/$folder.$container";
                my ($errtext,$fatal) = &LONCAPA::map::mapread($map);
                if ($fatal) {
                    $errormsg = &mt('Update failed: [_1].',$errtext);
                } else {
                    my $saveurl = &LONCAPA::map::qtunescape($newurl);
                    my $savetitle = &LONCAPA::map::qtunescape($newtitle);
                    my $ext = 'true';
                    if ($type eq 'tool') {
                        if ($args) {
                            ($updated,$newgradable,$errormsg) = &update_exttool($marker,$cdom,$cnum,
                                                                                $supplementalflag,$args);
                            if ($newgradable) {
                                &LONCAPA::map::storeparameter($residx,'parameter_0_gradable',$newgradable,
                                                              'string_yesno');
                                $needreload = 1;
                            }
                        }
                        $ext = 'false';
                    }
                    my $dotimeupdate;
                    unless ($supplementalflag) {
                        if (($newgradable) || ($newurl ne $oldurl)) {
                            $dotimeupdate = 1;
                        }
                    }
                    $LONCAPA::map::resources[$residx] =
                        join(':', ($savetitle,$saveurl,$ext,'normal','res'));
                    my ($outtext,$errtext) = &LONCAPA::map::storemap($map,1,$dotimeupdate);
                    if ($errtext) {
                        $errormsg = &mt('Update failed: [_1].',$errtext);
                    } else {
                        $updated = 1;
                        $title = $newtitle;
                        if ($newurl ne $oldurl) {
                            $url = $newurl;
                            if ($ext eq 'true') {
                                $newurl =~ s{^http://}{};
                                $newurl = "ext/$newurl";
                            }
                        }
                        if (!$supplementalflag) {
                            if ($newurl ne $oldurl) {
                                $symb = &Apache::lonnet::encode_symb($map,$residx,$newurl);
                            } else {
                                $symb = $env{'form.symb'};
                                if ($symb) {
                                    &Apache::lonnet::devalidate_title_cache($symb);
                                }
                            }
                            $needreload = 1;
                        }
                    }
                }
            }
            if ($needreload) {
                my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum");
                if ($ferr) {
                    $errormsg = &mt('Reload failed: [_1].',$ferr);
                } else {
                    unless ($supplementalflag) {
                        &Apache::loncommon::update_content_constraints($cdom,$cnum,$chome,
                                                                       $cdom.'_'.$cnum);
                    }
                }
            }
            if (($type eq 'tool') && ($newgradable)) {
                my $uri = &Apache::lonnet::declutter($url);
                &Apache::lonnet::devalidate_cache_new('meta',$uri);
            }
        } else {
            $output = &mt('No change');
        }
    } else {
        if ($type eq 'tool') {
            $errormsg = &mt('Information about current external tool is incomplete.');
        } else {
            $errormsg = &mt('Information about current external resource is incomplete.');
        }
    }
    return ($updated,$output,$errormsg,$residx,$url,$title,$symb);
}

sub update_exttool {
    my ($marker,$cdom,$cnum,$supplementalflag,$args) = @_;
    my (%newhash,$changed,$newgradable,@deleted,$errormsg);
    ($newhash{'target'},$newhash{'width'},$newhash{'height'},$newhash{'linktext'},$newhash{'explanation'},
     $newhash{'crslabel'},$newhash{'crstitle'},$newhash{'crsappend'},$newhash{'gradable'}) = split(/:/,$args);
    foreach my $item ('linktext','explanation','crslabel','crstitle','crsappend') {
        $newhash{$item} = &unescape($newhash{$item});
    }
    my %toolhash=&Apache::lonnet::dump('exttool_'.$marker,$cdom,$cnum);
    foreach my $item ('target','width','height','linktext','explanation','crslabel','crstitle','crsappend','gradable') {
        $newhash{$item} =~ s/^\s+//;
        $newhash{$item} =~ s/\s+$//;
        if (($item eq 'width') || ($item eq 'height') || ($item eq 'linktext') || ($item eq 'explanation')) {
            if ($newhash{'target'} eq 'iframe') {
                $newhash{$item} = '';
            } elsif ($newhash{'target'} eq 'tab') {
                if (($item eq 'width') || ($item eq 'height')) {
                    $newhash{$item} = '';
                }
            }
        } elsif ($item eq 'gradable') {
            unless ($newhash{$item} == 1) {
                $newhash{$item} = '';
            }
        }
        if ($toolhash{$item} ne $newhash{$item}) {
            if (($item eq 'gradable') && (!$supplementalflag)) {
                if ($newhash{$item}) {
                    $newgradable = 'yes';
                } else {
                    $newgradable = 'no';
                }
            }
            if ($newhash{$item} eq '') {
                unless (($item eq 'target') ||
                        ((($item eq 'width') || ($item eq 'height')) &&
                         (($newhash{'target'} eq 'window') || 
                          (($newhash{'target'} eq '') && ($toolhash{'target'} eq 'window')))) ||
                        ((($item eq 'linktext') || ($item eq 'explanation')) &&
                         ((($newhash{'target'} =~ /^(window|tab)$/)) ||
                         (($newhash{'target'} eq '') && ($toolhash{'target'} =~ /^(window|tab)$/))))) {
                    delete($toolhash{$item});
                    push(@deleted,$item);
                    $changed = 1;
                }
            } else {
                $toolhash{$item} = $newhash{$item};
                $changed = 1; 
            }
        }
    }
    if ($changed) {
        my $putres = &Apache::lonnet::put('exttool_'.$marker,\%toolhash,$cdom,$cnum);
        unless ($putres eq 'ok') {
            $errormsg = &mt('Failed to save updated settings.').' '.&mt('Error: [_1].',$putres);
        }
    }
    if (@deleted) {
        &Apache::lonnet::del('exttool_'.$marker,\@deleted,$cdom,$cnum);
    }
    return ($changed,$newgradable,$errormsg);
}

sub extedit_form {
    my ($supplementalflag,$residx,$orig_url,$orig_title,$pathitem,$helpitem,$caller,
        $symb,$type,$cdom,$cnum,$ltitools,$disabled) = @_;
    if ($type ne 'tool') {
        $type = 'ext';
    }
    my %lt = &Apache::lonlocal::texthash(
        ex => 'External Resource',
        et => 'External Tool',
        ed => 'Edit',
        ee => 'External Resource Editor',
        te => 'External Tool Editor',
        pr => 'Preview',
        sv => 'Save',
        ul => 'URL',
        ti => 'Title',
        al => 'Add Link',
        at => 'Add Tool',
        dd => 'Defined in domain',
        dc => 'Defined in course',
    );
    my $tabid = 'aa';
    my $size = 60;
    if ($supplementalflag) {
        $tabid = 'ee';
    }
    my ($formname,$formid,$toggle,$fieldsetid,$urlid,$subdivid,$dispdivstyle,$dimendivstyle,
        $windivstyle,$linktextstyle,$explanationstyle,$labelstyle,$titlestyle,
        $appendstyle,$gradablestyle,$subdivstyle,$legend,$urlelem,$toolelem,%toolattr);
    $formname = 'new'.$type;
    $toggle = $type;
    $fieldsetid = 'upload'.$type.'form';
    $urlid = $type.'url';
    map { $toolattr{$_} = $type.$_; } ('dispdiv','dimendiv','dimenwidth','dimenheight',
                                       'crstitlediv','crslabeldiv','crsappenddiv',
                                       'gradablediv','crstitle','crslabel','crsappend',
                                       'windiv','linktextdiv','explanationdiv',
                                       'linktext','explanation','providerurl');
    $dispdivstyle = 'display:none';
    $dimendivstyle = 'display:none';
    $windivstyle = 'display:none';
    $linktextstyle = 'display:none';
    $explanationstyle = 'display:none';
    $labelstyle = 'display:none';
    $titlestyle = 'display:none';
    $appendstyle = 'display:none';
    $gradablestyle = 'display:none';
    $subdivstyle = 'display:block';
    if ($supplementalflag) {
        $formname = 'newsupp'.$type;
        $toggle = 'supp'.$type;
        $fieldsetid = 'uploadsupp'.$type.'form';
        $urlid = 'supp'.$type.'url';
        map { $toolattr{$_} = 'supp'.$toolattr{$_}; } (keys(%toolattr));
    }
    my ($link,$legend,$active,$srcclass,$extsrc,$preview,$title,$save,$crstitle,$crslabel,
        $crsappend,$fieldsetstyle,$action,$hiddenelem,$form,$width,$height,$tooltarget,
        $linktext,$explanation,$providerurl,$chkgrd,$chknogrd,%chkstate);
    $fieldsetstyle = 'display: none;';
    $action = '/adm/coursedocs';
    my $protocol = ($ENV{'SERVER_PORT'} == 443?'https':'http');
    my $rows = 2;
    my $cols = 20;
    if ($residx) {
        if ($caller eq 'direct') {
            $fieldsetstyle = 'display: block;';
            $action = '/adm/extresedit';
            $rows = 10;
            $cols = 45;
            if ($type eq 'tool') {
                $legend = $lt{'te'};
            } else {
                $legend = $lt{'ee'};
            }
            $legend = '<legend>'.$legend.'</legend>';
            if ($symb) {
                $hiddenelem = '<input type="hidden" name="symb" value="'.$symb.'" />';
            } elsif ($supplementalflag) {
                $hiddenelem = '<input type="hidden" name="suppurl" value="'.
                              &HTML::Entities::encode(&escape($orig_url),'<>&"').'" />'."\n".
                              '<input type="hidden" name="title" value="'.
                              &HTML::Entities::encode(&escape($orig_title),'<>&"').'" />';
            }
        } else {
            $link = '<a class="LC_docs_ext_edit" href="javascript:editext('."'$residx','$type'".');">'.$lt{'ed'}.'</a>&nbsp;'."\n";
            $size = 40;
            $active = '<input type="hidden" name="active" value="'.$tabid.'" />';
        }
        $formname = 'edit'.$type.'_'.$residx;
        $fieldsetid = 'upload'.$type.$residx;
        $urlid = $type.'url_'.$residx;
        map { $toolattr{$_} .= '_'.$residx; } (keys(%toolattr));
        $srcclass = ' class="LC_nobreak"';
        if ($type eq 'ext') {
            $extsrc = '<span class="LC_docs_ext_edit">'.$lt{'ul'}.'&nbsp;</span>';
            $preview = '&nbsp;<a class="LC_docs_ext_edit" href="javascript:extUrlPreview('."'$urlid','$protocol'".');">'.$lt{'pr'}.'</a>';
        }
        $title = '<span class="LC_docs_ext_edit">'.$lt{'ti'}.'&nbsp;</span>';
        $save = $lt{'sv'};
    } else {
        $link = $lt{'ex'};
        if ($type eq 'tool') {
            $link = $lt{'et'};
        }
        $link = '<a class="LC_menubuttons_link" href="javascript:toggleUpload('."'$toggle'".');">'.$link.'</a>'.$helpitem;
        if ($type eq 'tool') {
            $legend = $lt{'te'};
        } else {
            $legend = $lt{'ee'};
        }
        $legend = '<legend>'.$legend.'</legend>';
        $title = $lt{'ti'}.':<br />';
        $residx = 0;
        if ($type eq 'ext') {
            $orig_url = 'http://';
            $orig_title = $lt{'ex'};
            $extsrc = $lt{'ul'}.':<br />';
            $preview = '<input type="button" name="view" value="'.$lt{'pr'}.'" onclick="javascript:extUrlPreview('."'$urlid','$protocol'".');"'.$disabled.' />';
            $save = $lt{'al'};
        } else {
            $orig_title = $lt{'et'};
            $save = $lt{'at'};
            $orig_url = "/adm/$cdom/$cnum/new/ext\.tool"; 
        }
        $pathitem .= '<br />';
    }
    $formid = $formname;
    if ($type eq 'ext') {
        $urlelem = '<input type="text" size="'.$size.'" name="exturl" id="'.$urlid.'" value="'.$orig_url.'"'.$disabled.' />';
    } else {
        my $class = 'LC_nobreak';
        if ($residx) {
            $class = 'LC_docs_ext_edit LC_nobreak'; 
            if ($orig_url =~ m{^/adm/$cdom/$cnum/(\d+)/ext\.tool$}) {
                my $marker = $1;
                my %toolhash=&Apache::lonnet::dump('exttool_'.$marker,$cdom,$cnum);
                my ($tooltype,$tool,$ltihash);
                if ($toolhash{'id'} =~/^c(\d+)$/) {
                    $tool = $1;
                    $tooltype = 'crs';
                    if (ref($ltitools) eq 'HASH') {
                        if (ref($ltitools->{'crs'}) eq 'HASH') {
                            $ltihash = $ltitools->{'crs'}->{$tool};
                        }
                    }
                } elsif ($toolhash{'id'} =~/^\d+$/) {
                    $tooltype = 'dom';
                    $tool = $toolhash{'id'};
                    if (ref($ltitools) eq 'HASH') {
                        if (ref($ltitools->{'dom'}) eq 'HASH') {
                            $ltihash = $ltitools->{'dom'}->{$tool};
                        }
                    }
                }
                if (($tool ne '') && (ref($ltihash) eq 'HASH')) {
                    my $tooltitle = $ltihash->{'title'};
                    my $icon = $ltihash->{'image'};
                    my $image;
                    if ($icon) {
                        $image = '<img src="'.$icon.'" alt="'.$tooltitle.'" />';
                    }
                    if ($ltihash->{'url'} =~ m{://}) {
                        (my $prot,my $host,$providerurl) = ($ltihash->{'url'} =~ m{^([^/]+)://([^/]+)(|/.+)$});
                    } else {
                        $providerurl = $ltihash->{'url'};
                    }
                    $tooltarget = $toolhash{'target'};
                    if ($tooltarget eq 'window') {
                        $dimendivstyle = 'display:block';
                        $windivstyle = 'display:block';
                        $chkstate{'window'} = 'checked="checked" ';
                    } elsif ($tooltarget eq 'tab') {
                        $windivstyle = 'display:block';
                        $chkstate{'tab'} = 'checked="checked" ';
                    } else {
                        $chkstate{'iframe'} = 'checked="checked" ';
                    }
                    $width = $toolhash{'width'};
                    $height = $toolhash{'height'};
                    $linktext = $toolhash{'linktext'};
                    $explanation = $toolhash{'explanation'};
                    if ($toolhash{'gradable'}) {
                        $chkgrd = ' checked="checked"';
                    } else {
                        $chknogrd = ' checked="checked"';
                    }
                    if (ref($ltihash->{'crsconf'}) eq 'HASH') {
                        if ($ltihash->{'crsconf'}->{'title'}) {
                            $crstitle = $toolhash{'crstitle'};
                            $titlestyle = 'display:inline';
                        }
                        if ($ltihash->{'crsconf'}->{'label'}) {  
                            $crslabel = $toolhash{'crslabel'};
                            $labelstyle = 'display:inline';
                        }
                        if ($ltihash->{'crsconf'}->{'append'}) {
                            $crsappend = $toolhash{'crsappend'};
                            $appendstyle = 'display:inline';
                        }
                        if ($ltihash->{'crsconf'}->{'target'}) {
                            $dispdivstyle = 'display:block';
                        }
                        if ($ltihash->{'crsconf'}->{'linktext'}) {
                            $linktextstyle = 'padding:0;display:inline';
                        }
                        if ($ltihash->{'crsconf'}->{'explanation'}) {
                            $explanationstyle = 'padding:0;display:inline';
                        }
                    }
                    $toolelem = '<span class="LC_nobreak">'.$image.'&nbsp;'.$tooltitle.'</span><br />';
                    $gradablestyle = 'display:inline';
                }
            }
        } else {
            $subdivstyle = 'display:none';
            my $toolradio = 'exttooltype';
            my $exttypeon = 'LC_exttoolon';
            my $exttypeoff = 'LC_exttooloff';
            my $exttypeonsty = 'display:none';
            my $exttypeoffsty = 'display:none';
            my $exttypeofftext;
            if ($supplementalflag) {
                $toolradio = 'suppexttooltype';
                $exttypeon = 'LC_exttoolonsupp';
                $exttypeoff = 'LC_exttooloffsupp';
            }
            my ($numcrstools,$numdomtools,$typeclick,%defcheck,%typedesc);
            %typedesc = (
                          crs => 'Defined in course',
                          dom => 'Defined in domain',
                        );
#FIXME need crstype
            my $seloptions;
            $subdivid = 'LC_addtool';
            if ($supplementalflag) {
                $subdivid = 'LC_addtoolsupp';
            }
            if (ref($ltitools) eq 'HASH') {
                if (ref($ltitools->{'crs'}) eq 'HASH') {
                    $numcrstools = scalar(keys(%{$ltitools->{'crs'}}));
                }
                if (ref($ltitools->{'dom'}) eq 'HASH') {
                    $numdomtools = scalar(keys(%{$ltitools->{'dom'}}));
                }
                if ($numcrstools || $numdomtools) {
                    $typeclick = ' onclick="'.
                        'javascript:updateExttoolSel(this.form,'."'$toolradio','$supplementalflag'".');"';
                } else {
                    $exttypeoffsty = 'display:block';
                    $exttypeofftext = &mt('No external tools defined in either the domain or the course are available for selection.');
                }
                if ($numcrstools && !$numdomtools) {
                    $defcheck{'crs'} = ' checked="checked"';
                    $subdivstyle = 'display:block';
                    $exttypeonsty = 'display:block';
                    my $firstoption = '<option value="" selected="selected">'.&mt('Select').'</option>';
                    $seloptions = &ordered_tooloptions($ltitools->{'crs'});
                    if ($seloptions) {
                        $seloptions = "$firstoption\n$seloptions";
                    }
                    $exttypeofftext = &mt('No external tools defined in the domain are available for selection.');
                } elsif (!$numcrstools && $numdomtools) {
                    $defcheck{'dom'} = ' checked="checked"';
                    $subdivstyle = 'display:block';
                    $exttypeonsty = 'display:block';
                    my $firstoption = '<option value="" selected="selected">'.&mt('Select').'</option>';
                    $seloptions = &ordered_tooloptions($ltitools->{'dom'});
                    if ($seloptions) {
                        $seloptions = "$firstoption\n$seloptions";
                    }
#FIXME need crstype
                    $exttypeofftext = &mt('No external tools defined in the course are available for selection.');
                }
            }
            foreach my $type ('crs','dom') {
                $toolelem .= '<span class="LC_nobreak"> <label>'.
                             '<input type="radio" name="'.$toolradio.'" value="'.$type.'"'.$defcheck{$type}.
                             $typeclick.$disabled.' />'.$typedesc{$type}.'</label></span> '."\n";
            }
            $toolelem .= '<div id="'.$exttypeon.'" style="'.$exttypeonsty.'">'.
                         '<select name="exttoolid" onchange="javascript:updateExttool(this,'.
                         'this.form,'."'$supplementalflag'".');"'.$disabled.'>'."\n".
                         $seloptions.
                         '</select><br /></div>'."\n".
                         '<div id="'.$exttypeoff.'" style="'.$exttypeoffsty.'">'.
                         $exttypeofftext.
                         '<br /></div>'."\n";
            $crslabel = $env{'course.'.$cdom.'_'.$cnum.'.internal.coursecode'};
            $crstitle = $env{'course.'.$cdom.'_'.$cnum.'.description'};
            $crsappend = '';
            $chknogrd = ' checked="checked"';
        }
        $toolelem .= '<div id="'.$toolattr{'dispdiv'}.'" style="'.$dispdivstyle.'">'.
                    '<span class="'.$class.'">'.&mt('Display target:').'&nbsp;'.
                    '<label><input type="radio" name="exttooltarget" value="iframe" '.$chkstate{'iframe'}.'onclick="updateTooldim(this.form,'.
                    "'$toolattr{dimendiv}','$toolattr{windiv}','$toolattr{dimenwidth}','$toolattr{dimenheight}',
                    '$toolattr{linktext}','$toolattr{explanation}'".');"'.$disabled.' />'.&mt('iframe').'</label>'.('&nbsp;'x2).
                    '<label><input type="radio" name="exttooltarget" value="tab" '.$chkstate{'tab'}.'onclick="updateTooldim(this.form,'.
                    "'$toolattr{dimendiv}','$toolattr{windiv}','$toolattr{dimenwidth}','$toolattr{dimenheight}',
                    '$toolattr{linktext}','$toolattr{explanation}'".');"'.$disabled.' />'.&mt('tab').'</label>'.('&nbsp;'x2).
                    '<label><input type="radio" name="exttooltarget" value="window" '.$chkstate{'window'}.'onclick="updateTooldim(this.form,'.
                    "'$toolattr{dimendiv}','$toolattr{windiv}','$toolattr{dimenwidth}','$toolattr{dimenheight}',
                    '$toolattr{linktext}','$toolattr{explanation}'".');"'.$disabled.' />'.&mt('window').'</label></span>'.
                    '<div id="'.$toolattr{'dimendiv'}.'" style="'.$dimendivstyle.'"><span class="'.$class.'">'.
                    &mt('Width').':&nbsp;<input type="text" size="4" id="'.$toolattr{'dimenwidth'}.'" name="exttoolwidth" value="'.$width.'"'.$disabled.' />'.('&nbsp;'x2).
                    &mt('Height').':&nbsp;<input type="text" size="4" id="'.$toolattr{'dimenheight'}.'" name="exttoolheight" value="'.$height.'"'.$disabled.' /></span>'."\n".
                    '</div></div>';
        $toolelem .= '<div id="'.$toolattr{'windiv'}.'" style="'.$windivstyle.'">'.
                     '<div id="'.$toolattr{'linktextdiv'}.'" class="LC_left_float" style="'.$linktextstyle.'">'.
                     '<span class="'.$class.'">'.&mt('Link Text').'</span><br /><input type="text" size="25" id="'.$toolattr{'linktext'}.
                     '" name="exttoollinktext" value="'.$linktext.'"'.$disabled.' />'.
                     '</div><div id="'.$toolattr{'explanationdiv'}.'" class="LC_left_float" style="'.$explanationstyle.'">'.
                     '<span class="'.$class.'">'.&mt('Explanation').'</span><br />'.
                     '<textarea rows="'.$rows.'" cols="'.$cols.'" id="'.$toolattr{'explanation'}.'" name="exttoolexplanation" '.$disabled.'>'.
                     $explanation.'</textarea></div><div style="padding:0;clear:both;margin:0;border:0"></div>'.
                     '</div>';
        $toolelem .= '<div id="'.$toolattr{'crslabeldiv'}.'" style="'.$labelstyle.'">'.
                    '<span class="'.$class.'">'.&mt('Course label:').'&nbsp;'.
                    '<input type="text" id="'.$toolattr{'crslabel'}.'" name="exttoollabel" value="'.$crslabel.'"'.$disabled.' /></span><br />'.
                    '</div>'.
                    '<div id="'.$toolattr{'crstitlediv'}.'" style="'.$titlestyle.'">'.
                    '<span class="'.$class.'">'.&mt('Course title:').'&nbsp;'.
                    '<input type="text" id="'.$toolattr{'crstitle'}.'" name="exttooltitle" value="'.$crstitle.'"'.$disabled.' /></span><br />'.
                    '</div>'.
                    '<div id="'.$toolattr{'crsappenddiv'}.'" style="'.$appendstyle.'">'.
                    '<span class="'.$class.'">'.&mt('Append to URL[_1]',
                    '<span id="'.$toolattr{'providerurl'}.'">&nbsp;('.$providerurl.')<br /></span>').
                    '<input type="text" id="'.$toolattr{'crsappend'}.'" size="30" name="exttoolappend" value="'.$crsappend.'"'.$disabled.' /></span><br />'.
                    '</div>'.
                    '<div id="'.$toolattr{'gradablediv'}.'" style="'.$gradablestyle.'">'.
                    '<span class="'.$class.'">'.&mt('Gradable').'&nbsp;'.
                    '<label><input type="radio" name="exttoolgradable" value="1"'.$chkgrd.$disabled.
                    ' />'.&mt('Yes').'</label>'.('&nbsp;'x2).
                    '<label><input type="radio" name="exttoolgradable" value="0"'.$chknogrd.$disabled.
                    ' />'.&mt('No').'</label></span></div>';
    }
    my $chooser = $toolelem;
    if ($type eq 'ext') {
        $chooser = "
<div>
<span$srcclass>
$extsrc
$urlelem
$preview
</span>
</div>
";
    }
    $form = <<ENDFORM;
<form action="$action" method="post" name="$formname" id="$formid">
<fieldset id="$fieldsetid" style="$fieldsetstyle">
$legend
$active
$chooser
<div id="$subdivid" style="$subdivstyle">
<span$srcclass>
$title
<input type="text" size="$size" name="exttitle" value="$orig_title" $disabled />
<input type="hidden" name="importdetail" value="" />
$pathitem
$hiddenelem
<input type="button" value="$save" onclick="javascript:setExternal(this.form,'$residx','$type','$orig_url','$supplementalflag');" $disabled />
</span>
</div>
</fieldset>
</form>
ENDFORM
    if (wantarray) {
        return ($link,$form);
    } else {
        return $link.$form;
    }
}

sub ordered_tooloptions {
    my ($toolsref) = @_;
    my ($seloptions,@ids,@titles);
    if (ref($toolsref) eq 'HASH') {
        my %bynum;
        foreach my $id (keys(%{$toolsref})) {
            if (ref($toolsref->{$id}) eq 'HASH') {
                my $order = $toolsref->{$id}->{'order'};
                $bynum{$order} = [$id,$toolsref->{$id}];
            }
        }
        foreach my $item (sort { $a <=> $b } keys(%bynum)) {
            if (ref($bynum{$item}) eq 'ARRAY') {
                if (ref($bynum{$item}->[1]) eq 'HASH') {
                    my $tooltitle = $bynum{$item}->[1]->{'title'};
                    push(@titles,$tooltitle);
                    push(@ids,$bynum{$item}->[0]);
                    $seloptions .= '<option value="'.$bynum{$item}->[0].'">'.$tooltitle.'</option>'."\n";
                }
            }
        }
    }
    if (wantarray) {
        return (\@ids,\@titles);
    } else {
        return $seloptions;
    }
}

sub display_editor {
    my ($url,$folderpath,$symb,$idx,$type,$cdom,$cnum,$hostname) = @_;
    my ($residx,$supplementalflag,$title,$pathitem,$output,$js,$navmap);
    if ($folderpath =~ /^supplemental/) {
        $supplementalflag = 1;
        $residx = $idx;
        $title = &unescape($env{'form.title'});
        $pathitem = '<input type="hidden" name="folderpath" value="'.&HTML::Entities::encode($folderpath,'<>&"').'" />';
    } elsif ($symb =~ /^uploaded/) {
        (my $map,$residx,my $res) =
            &Apache::lonnet::decode_symb($symb);
        $title = &Apache::lonnet::gettitle($symb);
        my $path = &Apache::loncommon::symb_to_docspath($symb,\$navmap);
        $pathitem = '<input type="hidden" name="folderpath" value="'.&HTML::Entities::encode($path,'<>&"').'" />';
    }
    my (%ltitools,%tooltypes);
    if ($type eq 'tool') {
        my (%domtools,%crstools);
        %tooltypes = &Apache::loncommon::usable_exttools();
        if ($tooltypes{'dom'}) {
            %domtools = &Apache::lonnet::get_domain_lti($cdom,'consumer');
        }
        if ($tooltypes{'crs'}) {
            %crstools = &Apache::lonnet::get_course_lti($cnum,$cdom,'consumer');
        }
        %ltitools = (
                      dom => \%domtools,
                      crs => \%crstools,
                    );
    }
    $js = &Apache::lonhtmlcommon::scripttag(&extedit_javascript());
    my $args = { 'force_register' => $env{'form.register'} };
    if ($hostname) {
        $args->{'hostname'} = $hostname;
    }
    my $description = 'External Resource Editor';
    if ($type eq 'tool') {
        $description = 'External Tool Editor';
    }
    return &Apache::loncommon::start_page($description,$js,$args).
           '<div class="LC_left_float">'.
           &extedit_form($supplementalflag,$residx,$url,$title,$pathitem,undef,'direct',
                         $symb,$type,$cdom,$cnum,\%ltitools).
           '</div>'.
           &Apache::loncommon::end_page();
}

sub extedit_javascript {
    my ($toolsref) = @_;
    my ($toolsjs,$exttoolnums,$exttooloptions);
    if (ref($toolsref) eq 'HASH') {
        $toolsjs = "        var ltitools = new Array();\n".
                   "        var ltitoolsUrl = new Array();\n".
                   "        var ltitoolsTarget = new Array();\n".
                   "        var ltitoolsWidth = new Array();\n".
                   "        var ltitoolsHeight = new Array();\n".
                   "        var ltitoolsLinkDef = new Array();\n".
                   "        var ltitoolsExplainDef = new Array();\n".
                   "        var ltitoolsDisplay = new Array();\n".
                   "        var ltitoolsLink = new Array();\n".
                   "        var ltitoolsExplain = new Array();\n".
                   "        var ltitoolsLabel = new Array();\n".
                   "        var ltitoolsTitle = new Array();\n".
                   "        var ltitoolsAppend = new Array();\n";
        $exttoolnums = "        var ltitoolsnum = new Array();\n".
                       "        var tooloptval = new Array();\n".
                       "        var toolopttxt = new Array();\n";
        my $idx = 0;
        foreach my $type ('crs','dom') {
            if (ref($toolsref->{$type}) eq 'HASH') {
                my $num = scalar(keys(%{$toolsref->{$type}}));
                $toolsjs .= "        ltitools[$idx] = new Array($num);\n".
                            "        ltitoolsUrl[$idx] = new Array($num);\n".
                            "        ltitoolsTarget[$idx] = new Array($num);\n".
                            "        ltitoolsWidth[$idx] = new Array($num);\n".
                            "        ltitoolsHeight[$idx] = new Array($num);\n".
                            "        ltitoolsLinkDef[$idx] = new Array($num);\n".
                            "        ltitoolsExplainDef[$idx] = new Array($num);\n".
                            "        ltitoolsDisplay[$idx] = new Array($num);\n".
                            "        ltitoolsLink[$idx] = new Array($num);\n".
                            "        ltitoolsExplain[$idx] = new Array($num);\n".
                            "        ltitoolsLabel[$idx] = new Array($num);\n".
                            "        ltitoolsTitle[$idx] = new Array($num);\n".
                            "        ltitoolsAppend[$idx] = new Array($num);\n";
                my $i=0;
                foreach my $key (sort { $a <=> $b } keys(%{$toolsref->{$type}})) {
                    if (ref($toolsref->{$type}->{$key}) eq 'HASH') {
                        if (ref($toolsref->{$type}->{$key}->{'display'}) eq 'HASH') {
                            my $target = $toolsref->{$type}->{$key}->{'display'}->{'target'};
                            my $width = $toolsref->{$type}->{$key}->{'display'}->{'width'};
                            my $height = $toolsref->{$type}->{$key}->{'display'}->{'height'};
                            my $linkdef = $toolsref->{$type}->{$key}->{'display'}->{'linktext'};
                            my $explaindef = $toolsref->{$type}->{$key}->{'display'}->{'explanation'};
                            my $providerurl;
                            if ($toolsref->{$type}->{$key}->{'url'} =~ m{://}) {
                                (my $prot,my $host,$providerurl) =
                                    ($toolsref->{$type}->{$key}->{'url'} =~ m{^([^/]+)://([^/]+)(|/.+)$});
                            } else {
                                $providerurl = $toolsref->{$type}->{$key}->{'url'};
                            }
                            $providerurl = &LONCAPA::map::qtunescape($providerurl);
                            $toolsjs .= "        ltitools[$idx][$i] = '$key';\n".
                                        "        ltitoolsTarget[$idx][$i] = '$target';\n".
                                        "        ltitoolsWidth[$idx][$i] = '$width';\n".
                                        "        ltitoolsHeight[$idx][$i] = '$height';\n".
                                        "        ltitoolsLinkDef[$idx][$i] = '$linkdef';\n".
                                        "        ltitoolsExplainDef[$idx][$i] = '$explaindef';\n".
                                        "        ltitoolsUrl[$idx][$i] = '$providerurl';\n";
                        }
                        if (ref($toolsref->{$type}->{$key}->{'crsconf'}) eq 'HASH') {
                            my $display = $toolsref->{$type}->{$key}->{'crsconf'}->{'target'};
                            $toolsjs .= "         ltitoolsDisplay[$idx][$i] = '$display';\n";
                            my $linktext = $toolsref->{$type}->{$key}->{'crsconf'}->{'linktext'};
                            $toolsjs .= "         ltitoolsLink[$idx][$i] = '$linktext';\n";
                            my $explanation = $toolsref->{$type}->{$key}->{'crsconf'}->{'explanation'};
                            $toolsjs .= "         ltitoolsExplain[$idx][$i] = '$explanation';\n";
                            my $label = $toolsref->{$type}->{$key}->{'crsconf'}->{'label'};
                            $toolsjs .= "         ltitoolsLabel[$idx][$i] = '$label';\n";
                            my $title = $toolsref->{$type}->{$key}->{'crsconf'}->{'title'};
                            $toolsjs .= "         ltitoolsTitle[$idx][$i] = '$title';\n";
                            my $append = $toolsref->{$type}->{$key}->{'crsconf'}->{'append'};
                            $toolsjs .= "         ltitoolsAppend[$idx][$i] = '$append';\n";
                        }
                    }
                    $i++;
                }
                my $firstoption = '<option value="" selected="selected">'.&mt('Select').'</option>';
                my ($idsref,$titlesref) = &ordered_tooloptions($toolsref->{$type});
                if ((ref($idsref) eq 'ARRAY') && (ref($titlesref) eq 'ARRAY')) {
                    my $count = scalar(@{$idsref});
                    $exttooloptions .= "        tooloptval[$idx] = new Array($count);\n".
                                       "        toolopttxt[$idx] = new Array($count);\n";
                    for (my $n=0; $n<@{$idsref}; $n++) {
                        my $id = $idsref->[$n];
                        my $text = $titlesref->[$n];
                        $exttooloptions .= "         tooloptval[$idx][$n] = '$id';\n".
                                           "         toolopttxt[$idx][$n] = '$text';\n";
                    }
                }
                $exttoolnums .= "        ltitoolsnum[$idx] = $i;\n";
            }
            $idx ++;
        }
    }
    my %js_lt = &Apache::lonlocal::texthash(
        invurl  => 'Invalid URL',
        titbl   => 'Title is blank',
        invtool => 'Please select an external tool',
        mixfra  => 'Show preview in pop-up? (http in https page + no framing)',
        mixonly => 'Show preview in pop-up? (http in https page)',
        fraonly => 'Show preview in pop-up? (framing disallowed)',
        nopopup => 'Pop-up blocked',
        nopriv  => 'Insufficient privileges to use preview',
        badurl  => 'URL is not: http://hostname/path or https://hostname/path',
        sele    => 'Select',
    );
    &js_escape(\%js_lt);

    my $urlregexp = <<'ENDREGEXP';
/^([a-z]([a-z]|\d|\+|-|\.)*):(\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?((\[(|(v[\da-f]{1,}\.(([a-z]|\d|-|\.|_|~)|[!\$&'\(\)\*\+,;=]|:)+))\])|((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=])*)(:\d*)?)(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*|(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)){0})(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i
ENDREGEXP

    return <<ENDJS;

var regexp = $urlregexp;

function setExternal(extform,residx,type,exttoolurl,supplementalflag) {
    var title=extform.exttitle.value;
    if (!String.trim) {
        String.prototype.trim = function() {return this.replace(\/^\\s+|\\s+$\/g, "");};    }
    if (title == null || title.trim()=="") {
        alert("$js_lt{'titbl'}");
        extform.exttitle.focus();
        return;
    }
    if (type == 'ext') {
        var url=extform.exturl.value;
        if (!regexp.test(url)) {
            alert("$js_lt{'invurl'}");
            extform.exturl.focus();
            return;
        } else {
            url = escape(url);
            title = escape(title);
            if (residx > 0) {
               eval("extform.importdetail.value=title+'='+url+'='+residx;extform.submit();");
            } else {
               eval("extform.importdetail.value=title+'='+url;extform.submit();");
            }
        }
    } else {
        title = escape(title);
        var info = exttoolurl;
        var prefix = '';
        if (supplementalflag == 1) {
           prefix = 'supp';
        }
        if (residx == 0) {
            var toolid = parseInt(extform.exttoolid.options[extform.exttoolid.selectedIndex].value);
            if (isNaN(toolid)) {
                alert("$js_lt{'invtool'}");
                return;
            }
            var typeelem = extform.elements[prefix+'exttooltype'];
            if (typeelem.length) {
                for (var i=0; i<typeelem.length; i++) {
                    if (typeelem[i].checked) {
                        tooltype = typeelem[i].value;
                    }
                }
            }
            if (tooltype == 'crs') {
                info += ':c'+toolid;
            } else {
                info += ':'+toolid;
            }
        }
        var dispdiv = prefix+'tooldispdiv';
        var windiv = prefix+'toolwindiv';
        if (residx > 0) {
            dispdiv += '_'+residx;
            windiv += '_'+residx;
        }
        if (document.getElementById(dispdiv)) {
            if (document.getElementById(dispdiv).style.display == 'block') {
                if (extform.exttooltarget.length) {
                    for (var i=0; i<extform.exttooltarget.length; i++) {
                        if (extform.exttooltarget[i].checked) {
                            if (extform.exttooltarget[i].value == 'window') {
                                var width = extform.exttoolwidth.value;
                                width.trim();
                                var height = extform.exttoolheight.value;
                                height.trim();
                                info += ':window:'+width+':'+height;
                            } else if (extform.exttooltarget[i].value == 'tab') {
                                info += ':tab::';
                            } else {
                                info += ':iframe::';
                            }
                        }
                    }
                }
            } else {
                info += ':::';
            }
        } else {
            info += ':::';
        }
        if (document.getElementById(windiv)) {
            if (document.getElementById(windiv).style.display == 'block') {
                var linktextdiv = prefix+'toollinktextdiv';
                var explanationdiv = prefix+'toolexplanationdiv';
                if (residx > 0) {
                    linktextdiv += '_'+residx;
                    explanationdiv += '_'+residx;
                }
                if (document.getElementById(linktextdiv).style.display == 'inline') {
                    var linktext = extform.exttoollinktext.value;
                    linktext.trim();
                    info += ':'+escape(linktext);
                } else {
                    info += ':';
                }
                if (document.getElementById(explanationdiv).style.display == 'inline') {
                    var explaintext = extform.exttoolexplanation.value;
                    explaintext.trim();
                    info += ':'+escape(explaintext);
                } else {
                    info += ':';
                }
            } else {
                info += '::';
            }
        } else {
            info += '::';
        }
        var labelinput = prefix+'toolcrslabel';
        var titleinput = prefix+'toolcrstitle';
        var appendinput = prefix+'toolcrsappend';
        if (residx > 0) {
            labelinput += '_'+residx;
            titleinput += '_'+residx;
            appendinput += '_'+residx;
        }
        if (document.getElementById(labelinput)) {
            var crslabel = document.getElementById(labelinput).value;
            crslabel.trim();
            info += ':'+escape(crslabel);
        } else {
            info += ':';
        } 
        if (document.getElementById(titleinput)) {
            var crstitle = document.getElementById(titleinput).value;
            crstitle.trim();
            info += ':'+escape(crstitle);
        } else {
            info += ':';
        }
        if (document.getElementById(appendinput)) {
            var crsappend = document.getElementById(appendinput).value;
            crsappend.trim();
            info += ':'+escape(crsappend);
        } else {
            info += ':';
        }
        var gradablediv = prefix+'toolgradablediv';
        if (residx > 0) {
            gradablediv += '_'+residx;
        }
        if (document.getElementById(gradablediv)) {
            if (document.getElementById(gradablediv).style.display == 'inline') {
                if (extform.exttoolgradable.length) {
                    for (var i=0; i<extform.exttoolgradable.length; i++) {
                        if (extform.exttoolgradable[i].checked) {
                            if (extform.exttoolgradable[i].value == '1') {
                                info += ':1';
                            } else {
                                info += ':';
                            }
                            break;
                        }
                    }
                } else {
                    info += ':';
                }
            } else {
                info += ':';
            }
        } else {
            info += ':';
        }
        info=escape(info);
        if (residx > 0) {
            eval("extform.importdetail.value=title+'='+info+'='+residx;extform.submit();");
        } else {
            eval("extform.importdetail.value=title+'='+info;extform.submit();");
        }
    }
}

function editext(residx,type) {
    if (document.getElementById('upload'+type+residx)) {
        var curr = document.getElementById('upload'+type+residx).style.display;
        if (curr == 'none') {
            disp = 'block';
        } else {
            disp = 'none';
        }
        document.getElementById('upload'+type+residx).style.display=disp;
    }
    resize_scrollbox('contentscroll','1','1');
    return;
}

function extUrlPreview(caller,protocol) {
    if (document.getElementById(caller)) {
        var url = document.getElementById(caller).value;
        if (regexp.test(url)) {
            var http_regex = /^http\:\/\//gi;
            var mixed = 0;
            var noiframe = 0;
            var nopriv = 0;
            var badurl = 0;
            var name = "externalpreview";
            if ((protocol == 'https') && (http_regex.test(url))) {
                mixed = 1;
            }
            var http = new XMLHttpRequest();
            var lcurl = "/adm/exturlcheck";
            var params = "exturl="+url;
            http.open("POST",lcurl, true);
            http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
            http.onreadystatechange = function() {
                if (http.readyState == 4) {
                    if (http.status == 200) {
                        if (http.responseText.length > 0) {
                            if (http.responseText == 1) {
                                noiframe = 1;
                            } else if (http.responseText == -1) {
                                nopriv = 1;
                            } else if (http.responseText == 0) {
                                badurl = 1;
                            }
                        }
                        openPreviewWindow(url,name,noiframe,mixed,nopriv,badurl);
                    }
                }
            }
            http.send(params);
        } else {
            alert("$js_lt{'invurl'}");
        }
    }
}

var previewLCWindow = null;
function openPreviewWindow(url,name,noiframe,mixed,nopriv,badurl) {
    if (previewLCWindow !=null) {
        previewLCWindow.close();
    }
    if (badurl) {
        alert("$js_lt{'badurl'}");
    } else if (nopriv) {
        alert("$js_lt{'nopriv'}");
    } else if ((noiframe == 1) || (mixed == 1)) {
        var encurl = encodeURI(url);
        var msg;
        if (mixed == 1) {
            if (noiframe == 1) {
                msg = "$js_lt{'mixfra'}";
            } else {
                msg = "$js_lt{'mixonly'}";
            }
        } else {
            msg = "$js_lt{'fraonly'}";
        }
        if (confirm(msg)) {
            previewLCWindow = window.open(url,name,"height=400,width=500,scrollbars=1,resizable=1,menubar=0,location=1");
            if (previewLCWindow != null) {
                previewLCWindow.focus();
            } else {
                alert("$js_lt{'nopopup'}");
            }
        }
    } else {
        openMyModal(url,500,400,'yes');
    }
}

function updateExttoolSel(form,radioname,supplementalflag) {
    var prefix = '';
    var typepick;
    var radelem = form.elements[radioname];
    if (radelem.length) {
        for (var i=0; i<radelem.length; i++) {
            if (radelem[i].checked) {
                if (radelem[i].value == 'crs') {
                    typepick = 0;
                } else if (radelem[i].value == 'dom') {
                    typepick = 1;
                }
                break;
            }
        }
    }
    if (supplementalflag == 1) {
        prefix = 'supp';
    }
    $exttoolnums
    $exttooloptions
    if ((typepick == 0) || (typepick == 1)) {
        var selelem = form.elements['exttoolid'];
        var i, numopts = selelem.options.length -1;
        if (numopts >=0) {
            for (i = numopts; i >= 0; i--) {
                selelem.remove(i);
            }
        }
        if (ltitoolsnum[typepick]) {
            if ((Array.isArray(tooloptval[typepick])) && (Array.isArray(toolopttxt[typepick]))) {
                var len = tooloptval[typepick].length;
                if (len) {
                    selelem.options[selelem.options.length] = new Option('$js_lt{sele}','',1,1);
                    var j;
                    for (j=0; j<len; j++) {
                        selelem.options[selelem.options.length] = new Option(toolopttxt[typepick][j],tooloptval[typepick][j]);
                    }
                    selelem.selectedIndex = 0;
                }
            }
            if (document.getElementById('LC_exttoolon'+prefix)) {
                document.getElementById('LC_exttoolon'+prefix).style.display = 'block';
            }
            if (document.getElementById('LC_exttooloff'+prefix)) {
                document.getElementById('LC_exttooloff'+prefix).style.display = 'none';
            }
            if (document.getElementById('LC_addtool'+prefix)) {
                document.getElementById('LC_addtool'+prefix).style.display = 'block';
            }
        } else {
            if (document.getElementById('LC_exttoolon'+prefix)) {
                document.getElementById('LC_exttoolon'+prefix).style.display = 'none';
            }
            if (document.getElementById('LC_exttooloff'+prefix)) {
                document.getElementById('LC_exttooloff'+prefix).style.display = 'block';
            }
            if (document.getElementById('LC_addtool'+prefix)) {
                document.getElementById('LC_addtool'+prefix).style.display = 'none';
            }
        }
        if (selelem.options.length == 0) {
            selelem.options[selelem.options.length] = new Option('','');
            selelem.selectedIndex = 0;
        }
        updateExttool(selelem,form,supplementalflag);
        resize_scrollbox('contentscroll','1','1');
    }
    return;
}

function updateExttool(caller,form,supplementalflag) {
    var prefix = '';
    if (supplementalflag == 1) {
        prefix = 'supp';
    }
    dispdiv = prefix+'tooldispdiv';
    dimendiv = prefix+'tooldimendiv';
    widthinput = prefix+'tooldimenwidth';
    heightinput = prefix+'tooldimenheight';
    labeldiv = prefix+'toolcrslabeldiv';
    titlediv = prefix+'toolcrstitlediv';
    appenddiv = prefix+'toolcrsappenddiv';
    gradablediv = prefix+'toolgradablediv';
    providerurl = prefix+'toolproviderurl';
    labelinput = prefix+'toolcrslabel';
    titleinput = prefix+'toolcrstitle';
    appendinput = prefix+'toolcrsappend';
    windiv = prefix+'toolwindiv';  
    linktextdiv = prefix+'toollinktextdiv';
    linktextinput = prefix+'toollinktext';
    explanationdiv = prefix+'toolexplanationdiv';
    explanationinput = prefix+'toolexplanation';
    if (document.getElementById(dispdiv)) {
        var toolpick = caller.options[caller.selectedIndex].value;
        $toolsjs
        if (toolpick == '') {
            if (document.getElementById(dispdiv)) {
                document.getElementById(dispdiv).style.display = 'none';    
            }
            if (document.getElementById(dimendiv)) {
                document.getElementById(dimendiv).style.display = 'none';
            }
            if (document.getElementById(windiv)) {
                document.getElementById(windiv).style.display = 'none';
            }
            if (document.getElementById(linktextdiv)) {
                document.getElementById(linktextdiv).style.display = 'none';
            }
            if (document.getElementById(explanationdiv)) {
                document.getElementById(explanationdiv).style.display = 'none';
            }
            if (document.getElementById(labeldiv)) {
                document.getElementById(labeldiv).style.display = 'none';
            }
            if (document.getElementById(titlediv)) {
                document.getElementById(titlediv).style.display = 'none';
            }
            if (document.getElementById(appenddiv)) {
                document.getElementById(appenddiv).style.display = 'none';
            }
            if (document.getElementById(gradablediv)) {
                document.getElementById(gradablediv).style.display = 'none';
            }
        } else {
            var tooltype = '';
            var typeelem = form.elements[prefix+'exttooltype'];
            if (typeelem.length) {
                for (var i=0; i<typeelem.length; i++) {
                    if (typeelem[i].checked) {
                        tooltype = typeelem[i].value;
                    }
                }
            }
            if ((tooltype == 'crs') || (tooltype == 'dom')) {
                var i = 0;
                if (tooltype == 'dom') {
                    i = 1;
                }
                if (ltitools[i].length > 0) {
                    for (var j=0; j<ltitools[i].length; j++) {
                        if (ltitools[i][j] == toolpick) {
                            if (document.getElementById(dispdiv)) {
                                if (ltitoolsDisplay[i][j]) {
                                    document.getElementById(dispdiv).style.display = 'block';
                                    if (form.exttooltarget.length) {
                                        for (var k=0; k<form.exttooltarget.length; k++) {
                                            if (form.exttooltarget[k].value == ltitoolsTarget[i][j]) {
                                                form.exttooltarget[k].checked = true;
                                                break;
                                            }
                                        }
                                    }
                                }
                                var dimen = 'none';
                                var dimenwidth = '';
                                var dimenheight = '';
                                if ((ltitoolsDisplay[i][j]) && (ltitoolsTarget[i][j] == 'window')) {
                                    dimen = 'block';
                                    dimenwidth = ltitoolsWidth[i][j];
                                    dimenheight = ltitoolsHeight[i][j];
                                }
                                if (document.getElementById(dimendiv)) {
                                    document.getElementById(dimendiv).style.display = dimen;
                                }
                                if (document.getElementById(widthinput)) {
                                    document.getElementById(widthinput).value = dimenwidth;
                                }
                                if (document.getElementById(heightinput)) {
                                    document.getElementById(heightinput).value = dimenheight;
                                }
                            }
                            if (document.getElementById(windiv)) {
                                if ((ltitoolsTarget[i][j] == 'window') || (ltitoolsTarget[i][j] == 'tab')) {
                                    document.getElementById(windiv).style.display = 'block';
                                } else {
                                    document.getElementById(windiv).style.display = 'none';
                                }
                                if (document.getElementById(linktextdiv)) {
                                    if (ltitoolsLink[i][j]) {
                                        document.getElementById(linktextdiv).style.display = 'inline';
                                    } else {
                                        document.getElementById(linktextdiv).style.display = 'none';
                                    }
                                }
                                if (document.getElementById(linktextinput)) {
                                    if (ltitoolsLink[i][j]) {
                                        document.getElementById(linktextinput).value = ltitoolsLinkDef[i][j];
                                    } else {
                                        document.getElementById(linktextinput).value = '';
                                    }
                                }
                                if (document.getElementById(explanationdiv)) {
                                    if (ltitoolsExplain[i][j]) {
                                        document.getElementById(explanationdiv).style.display = 'inline';
                                    } else {
                                        document.getElementById(explanationdiv).style.display = 'none';
                                    }
                                }
                                if (document.getElementById(explanationinput)) {
                                    if (ltitoolsExplain[i][j]) {
                                        document.getElementById(explanationinput).value = ltitoolsExplainDef[i][j];
                                    } else {
                                        document.getElementById(explananationinput).value = '';
                                    }
                                }
                            }
                            if (document.getElementById(labeldiv)) {
                                if (ltitoolsLabel[i][j]) {
                                    document.getElementById(labeldiv).style.display = 'inline';
                                } else {
                                    document.getElementById(labeldiv).style.display = 'none';
                                }
                            }
                            if (document.getElementById(titlediv)) {
                                if (ltitoolsTitle[i][j]) {
                                    document.getElementById(titlediv).style.display = 'inline';
                                } else {
                                    document.getElementById(titlediv).style.display = 'none';
                                }
                            }
                            if (document.getElementById(appenddiv)) {
                                if (ltitoolsAppend[i][j]) {
                                    document.getElementById(appenddiv).style.display = 'inline';
                                    if (document.getElementById(providerurl)) {
                                        if ((ltitoolsUrl[i][j] != '') && (ltitoolsUrl[i][j] != null)) {
                                            document.getElementById(providerurl).innerHTML = '&nbsp;('+ltitoolsUrl[i][j]+')<br />';
                                        }
                                    }
                                } else {
                                    document.getElementById(appenddiv).style.display = 'none';
                                    if (document.getElementById(providerurl)) {
                                        document.getElementById(providerurl).innerHTML = '';
                                    }
                                }
                            }
                            if (document.getElementById(gradablediv)) {
                                if (supplementalflag != 1) {
                                    document.getElementById(gradablediv).style.display = 'inline';
                                }
                            }
                            break;
                        }
                    }
                }
            }
        }
    }
}

function updateTooldim(form,dimendiv,windiv,widthinput,heightinput,linkinput,explaininput) {
    if (form.exttooltarget.length) {
        for (var i=0; i<form.exttooltarget.length; i++) {
            if (form.exttooltarget[i].checked) {
                var dimen = 'none';
                var linkconf = 'none';
                if (form.exttooltarget[i].value == 'window') {
                    dimen = 'block';
                    linkconf = 'block';
                } else {
                    if (form.exttooltarget[i].value == 'tab') {
                        linkconf = 'block';
                    } else {
                        if (document.getElementById(widthinput)) {
                            document.getElementById(widthinput).value = '';
                        }
                        if (document.getElementById(heightinput)) {
                            document.getElementById(heightinput).value = '';
                        }
                        if (document.getElementById(linkinput)) {
                            document.getElementById(linkinput).value = '';
                        }
                        if (document.getElementById(explaininput)) {
                            document.getElementById(explaininput).value = '';
                        }
                    }
                }
                if (document.getElementById(dimendiv)) {
                    document.getElementById(dimendiv).style.display = dimen;
                }
                if (document.getElementById(windiv)) {
                    document.getElementById(windiv).style.display = linkconf;
                }
                break;
            }
        }
    }
}

ENDJS

}

1;