# The LearningOnline Network with CAPA
#
# The LON-CAPA group sort handler
#
# Allows for sorting prior to import into RAT.
#
# YEAR=2001
# 8/7 Scott Harrison
package Apache::groupsort;
use strict;
use Apache::Constants qw(:common);
use GDBM_File;
my %hash;
my $iconpath;
sub handler {
my $r = shift;
my $fileclr='#ffffe6';
my $titleclr='#ddffff';
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
$r->print(<<END);
<html>
<head>
<title>The LearningOnline Network With CAPA Group Sorter</title>
<script language='javascript'>
function insertRowInLastRow() {
opener.insertrow(opener.maxrow);
opener.addobj(opener.maxrow,'e&2');
}
function placeResourceInLastRow (title,url,linkflag) {
opener.newresource(opener.maxrow,2,opener.escape(title),opener.escape(url),'false','normal');
opener.save();
opener.mostrecent=opener.obj.length-1;
if (linkflag) {
opener.joinres(opener.linkmode,opener.mostrecent,0);
}
opener.linkmode=opener.mostrecent;
}
function finish_import() {
var linkflag=false;
for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
// if (eval("document.forms.groupsort.filelink"+num+".value")) {
// alert(eval("document.forms.groupsort.title"+num+".value")+
// eval("document.forms.groupsort.filelink"+num+".value"));
insertRowInLastRow();
placeResourceInLastRow(
eval("document.forms.groupsort.title"+num+".value"),
eval("document.forms.groupsort.filelink"+num+".value"),
linkflag
);
linkflag=true;
// }
}
opener.editmode=0;
opener.notclear=0;
opener.linkmode=0;
opener.infoclear();
opener.draw();
// self.close();
}
function selectchange(val) {
var newval=1+eval("document.forms.groupsort.alt"+val+".selectedIndex");
orderchange(val,newval);
}
function move(val,newval) {
orderchange(val,newval);
}
function orderchange(val,newval) {
document.forms.groupsort.oldval.value=val;
document.forms.groupsort.newval.value=newval;
document.forms.groupsort.submit();
}
</script>
</head>
<body bgcolor="#FFFFFF">
END
my $domain = $r->dir_config('lonDefDomain');
$iconpath= $r->dir_config('lonIconsURL') . "/";
my $diropendb = "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
my %shash;
my %thash;
map {
my ($name, $value) = split(/=/,$_);
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
if ($name eq 'acts') {
$ENV{'form.'.$name}=$value;
}
} (split(/&/,$ENV{'QUERY_STRING'}));
if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
my $acts=$ENV{'form.acts'};
my @Acts=split(/b/,$acts);
my %ahash;
my %achash;
my $ac=0;
map {
my ($state,$ref)=split(/a/);
$ahash{$ref}=$state;
$achash{$ref}=$ac;
$ac++;
} (@Acts);
map {
my $key=$_;
if ($ahash{$key} eq '1') {
# $r->print("<b>NEW: ");
# $r->print($hash{'pre_'.$key.'_title'});
# $r->print(" : ");
# $r->print($hash{'pre_'.$key.'_link'});
# $r->print("</b><br />");
$hash{'store_'.$hash{'pre_'.$key.'_link'}}=
$hash{'pre_'.$key.'_title'};
$hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
$hash{'storectr'}+0;
$hash{'storectr'}++;
}
if ($ahash{$key} eq '0') {
if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
}
}
} sort {$achash{$a}<=>$achash{$b}} (keys %ahash);
map {
if ($_ =~ /^store_/) {
my $key=$_;
$key=~s/^store_//;
# $r->print("<b>STORE: ");
# $r->print($hash{'storectr_'.$key});
# $r->print(':');
# $r->print($hash{'store_'.$key});
# $r->print(':');
# $r->print($key);
$shash{$key}=$hash{'storectr_'.$key};
$thash{$key}=$hash{'store_'.$key};
# $r->print("</b><br />");
}
} keys %hash;
if ($ENV{'form.oldval'}) {
# $r->print('TEST TEST');
my $newctr=0;
my %chash;
map {
my $key=$_;
$newctr++;
$shash{$key}=$newctr;
$hash{'storectr_'.$key}=$newctr;
$chash{$newctr}=$key;
} sort {$shash{$a}<=>$shash{$b}} (keys %shash);
my $oldval=$ENV{'form.oldval'};
my $newval=$ENV{'form.newval'};
if ($oldval!=$newval) {
$shash{$chash{$oldval}}=$newval;
$hash{'storectr_'.$chash{$oldval}}=$newval;
if ($oldval<$newval) { # push down
for my $idx ($oldval..($newval-1)) {
$shash{$chash{$idx+1}}=$idx;
$hash{'storectr_'.$chash{$idx+1}}=$idx;
}
}
elsif ($oldval>$newval) { # push up
for my $idx (reverse($newval..($oldval-1))) {
$shash{$chash{$idx}}=$idx+1;
$hash{'storectr_'.$chash{$idx}}=$idx+1;
}
}
}
}
} else {
$r->print('<html><head></head><body>Unable to tie hash to db file</body></html>');
return OK;
}
untie %hash;
# $r->print($ENV{'form.acts'});
my $ctr=0;
my $clen=scalar(keys %shash);
$r->print('<h2><font color="#888888">The LearningOnline With CAPA Group Sorter</font></h2>'."\n");
$r->print('<b><font color="#888888">Finalize order of resources</font></b>'."\n");
$r->print("<form method='post' action='/adm/groupsort' name='groupsort' enctype='application/x-www-form-urlencoded'>");
$r->print(<<END);
<input type="hidden" name="fnum" value="$clen" />
<input type="hidden" name="oldval" value="" />
<input type="hidden" name="newval" value="" />
<input type="button" name="alter" value="GO BACK" onClick="window.location='/res/?catalogmode=groupimport'" />
<input type="button" name="alter" value="FINISH IMPORT" onClick="finish_import()" />
<input type="button" name="alter" value="CANCEL" onClick="self.close()" />
END
$r->print("<table border='0'><tr><td bgcolor='#eeeeee'>");
$r->print("<table border=0><tr>\n");
$r->print("<td colspan='2' bgcolor='$titleclr'><b>Change order</b></td>\n");
$r->print("<td colspan='2' bgcolor='$titleclr'><b>Title</b></td>\n");
$r->print("<td bgcolor='$titleclr'><b>Path</b></td></tr>\n");
map {
my $key=$_;
$ctr++;
my @file_ext = split(/\./,$key);
my $curfext = $file_ext[scalar(@file_ext)-1];
$r->print("<tr><td bgcolor='$fileclr'>");
$r->print(&movers($clen,$ctr));
$r->print(&hidden($ctr-1,$thash{$key},$key));
$r->print("</td><td bgcolor='$fileclr'>");
$r->print(&select_box($clen,$ctr));
$r->print("</td><td bgcolor='$fileclr'>");
$r->print("<img src='$iconpath$curfext.gif'>");
$r->print("</td><td bgcolor='$fileclr'>");
$r->print("$thash{$key}</td><td bgcolor='$fileclr'>\n");
$r->print("$key</td></tr>\n");
} sort {$shash{$a}<=>$shash{$b}} (keys %shash);
$r->print("</table></td></tr></table></form>");
$r->print(<<END);
</body>
</html>
END
return OK;
}
sub hidden {
my ($sel,$title,$filelink)=@_;
my $string='<input type="hidden" name="title'.$sel.'" value="'.$title.'" />';
$string.='<input type="hidden" name="filelink'.$sel.'" value="'.$filelink.'" />';
return $string;
}
sub movers {
my ($total,$sel)=@_;
my $dsel=$sel-1;
my $usel=$sel+1;
$usel=1 if $usel>$total;
$dsel=$total if $dsel<1;
my $string;
$string=<<END;
<table border='0' cellspacing='0' cellpadding='0'>
<tr><td><a href='javascript:move($sel,$dsel)'><img src="${iconpath}move_up.gif" alt='UP' border='0' /></a></td></tr>
<tr><td><a href='javascript:move($sel,$usel)'><img src="${iconpath}move_down.gif" alt='DOWN' border='0' /></a></td></tr>
</table>
END
return $string;
}
1;
sub select_box {
my ($total,$sel)=@_;
my $string;
$string='<select name="alt'.$sel.'"';
$string.=" onChange='selectchange($sel)'>";
for my $cur (1..$total) {
$string.="<option name='o$cur' value='$cur'";
if ($cur==$sel) {
$string.="selected";
}
$string.=">$cur</option>";
}
$string.="</select>\n";
return $string;
}
1;
__END__
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