File:
[LON-CAPA] /
loncom /
interface /
groupsort.pm
Revision
1.38:
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Sat Jun 11 01:06:54 2005 UTC (19 years, 2 months ago) by
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CVS tags:
version_2_1_2,
version_2_1_1,
version_2_1_0,
version_2_0_X,
version_2_0_99_1,
version_2_0_2,
version_2_0_1,
version_2_0_0,
version_1_99_3,
version_1_99_2,
version_1_99_1,
version_1_99_0,
HEAD
Bug #3738: being able to recover "zombie" resources (i.e., undelete without
data loss)
# The LearningOnline Network with CAPA
# The LON-CAPA group sort handler
# Allows for sorting prior to import into RAT.
#
# $Id: groupsort.pm,v 1.38 2005/06/11 01:06:54 www 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::groupsort;
use strict;
use Apache::Constants qw(:common);
use GDBM_File;
use Apache::loncommon;
use Apache::lonlocal;
use Apache::lonnet;
my $iconpath; # variable to be accessible to multiple subroutines
my %hash; # variable to tie to user specific database
sub readfromdb {
my ($r,$shash,$thash)=@_;
my $diropendb;
# ------------------------------ which file do we open? Easy if explictly given
if ($env{'form.catalogmode'} eq 'groupsearch') {
$diropendb =
"/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_searchcat.db";
} elsif ($env{'form.catalogmode'} eq 'groupimport') {
$diropendb =
"/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_indexer.db";
} elsif ($env{'form.catalogmode'} eq 'groupsec') {
$diropendb =
"/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_groupsec.db";
} else {
# --------------------- not explicitly given, choose the one most recently used
my @dbfn;
my @dbst;
$dbfn[0] =
"/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_searchcat.db";
$dbst[0]=-1;
if (-e $dbfn[0]) {
$dbst[0]=(stat($dbfn[0]))[9];
}
$dbfn[1] =
"/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_indexer.db";
$dbst[1]=-1;
if (-e $dbfn[1]) {
$dbst[1]=(stat($dbfn[1]))[9];
}
$dbfn[2] =
"/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_groupsec.db";
$dbst[2]=-1;
if (-e $dbfn[2]) {
$dbst[2]=(stat($dbfn[2]))[9];
}
# Expand here for more modes
# ....
# Okay, find most recent existing
my $newest=0;
$diropendb='';
for (my $i=0; $i<=$#dbfn; $i++) {
if ($dbst[$i]>$newest) {
$newest=$dbst[$i];
$diropendb=$dbfn[$i];
}
}
}
# ----------------------------- diropendb is now the filename of the db to open
if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
my $acts = $env{'form.acts'};
my @Acts = split(/b/,$acts);
my %ahash;
my %achash;
my $ac = 0;
foreach (@Acts) {
my ($state,$ref) = split(/a/);
$ahash{$ref} = $state;
$achash{$ref} = $ac;
$ac++;
}
foreach (sort {$achash{$a} <=> $achash{$b}} (keys %ahash)) {
my $key = $_;
if ($ahash{$key} eq '1') {
# my $keyz=join("<br />",keys %hash);
# print "<br />$key<br />$keyz".$hash{'pre_'.$key.'_link'}."<br />\n";
$hash{'store_'.$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_'.$key.'_link'}};
}
}
}
foreach (keys %hash) {
if ($_ =~ /^store_/) {
my $key = $_;
$key =~ s/^store_//;
$$shash{$key} = $hash{'storectr_'.$key};
if (&Apache::lonnet::gettitle($key) eq '') {
$$thash{$key} = $hash{'store_'.$key};
} else {
$$thash{$key} = &Apache::lonnet::gettitle($key);
}
}
}
if ($env{'form.oldval'}) {
my $newctr = 0;
my %chash;
foreach (sort {$$shash{$a} <=> $$shash{$b}} (keys %{$shash})) {
my $key = $_;
$newctr++;
$$shash{$key} = $newctr;
$hash{'storectr_'.$key} = $newctr;
$chash{$newctr} = $key;
}
my $oldval = $env{'form.oldval'};
my $newval = $env{'form.newval'};
if ($oldval != $newval) {
# when newval==0, then push down and delete
if ($newval!=0) {
$$shash{$chash{$oldval}} = $newval;
$hash{'storectr_'.$chash{$oldval}} = $newval;
} else {
$$shash{$chash{$oldval}} = $newctr;
$hash{'storectr_'.$chash{$oldval}} = $newctr;
}
if ($newval==0) { # push down
my $newval2=$newctr;
for my $idx ($oldval..($newval2-1)) {
$$shash{$chash{$idx+1}} = $idx;
$hash{'storectr_'.$chash{$idx+1}} = $idx;
}
delete $$shash{$chash{$oldval}};
delete $hash{'storectr_'.$chash{$oldval}};
delete $hash{'store_'.$chash{$oldval}};
} elsif ($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 {
$r->print('Unable to tie hash to db file');
}
untie %hash;
return ($shash,$thash);
}
sub cleanup {
if (tied(%hash)){
&Apache::lonnet::logthis('Cleanup groupsort: hash');
unless (untie(%hash)) {
&Apache::lonnet::logthis('Failed cleanup groupsort: hash');
}
}
}
# -------------------------------------------------------------- Read from file
sub readfromfile {
my ($r,$shash,$thash,$nhash)=@_;
my $cont=&Apache::lonnet::getfile
(&Apache::lonnet::filelocation('',$env{'form.readfile'}));
if ($cont==-1) {
$r->print('Unable to read file: '.
&Apache::lonnet::filelocation('',$env{'form.readfile'}));
} else {
my $parser = HTML::TokeParser->new(\$cont);
my $token;
my $n=1;
while ($token = $parser->get_token) {
if ($token->[0] eq 'S') {
if ($token->[1] eq 'resource') {
if ($env{'form.recover'}) {
if ($token->[2]->{'type'} ne 'zombie') { next; }
} else {
if ($token->[2]->{'type'} eq 'zombie') { next; }
}
my $url=$token->[2]->{'src'};
my $name=$token->[2]->{'title'};
$name=~s/ \[\((\d+)\,(\w+)\,(\w+)\)\]$//;
if ($1) {
$$nhash{$url}='<br />'.&mt('Removed by ').
&Apache::loncommon::plainname($2,$3).', '.
&Apache::lonlocal::locallocaltime($1);
}
$name=~s/\&colon\;/\:/g;
$$thash{$url}=$name;
$$shash{$url}=$n;
$n++;
}
}
}
}
return ($shash,$thash);
}
# ---------------------------------------------------------------- Main Handler
sub handler {
my $r = shift;
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['acts','catalogmode','mode','readfile','recover']);
# color scheme
my $fileclr = '#ffffe6';
my $titleclr = '#ddffff';
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
return OK if $r->header_only;
# finish_import looks different for graphical or "simple" RAT
my $finishimport='';
my $begincondition='';
my $endcondition='';
if ($env{'form.readfile'}) {
$begincondition='if (eval("document.forms.groupsort.include"+num+".checked")) {';
$endcondition='}';
}
if ($env{'form.mode'} eq 'simple' || $env{'form.mode'} eq '') {
$finishimport=(<<ENDSMP);
function finish_import() {
opener.document.forms.simpleedit.importdetail.value='';
for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
$begincondition
opener.document.forms.simpleedit.importdetail.value+='&'+
escape(eval("document.forms.groupsort.title"+num+".value"))+'='+
escape(eval("document.forms.groupsort.filelink"+num+".value"));
$endcondition
}
opener.document.forms.simpleedit.submit();
self.close();
}
ENDSMP
} else {
$finishimport=(<<ENDADV);
function finish_import() {
var linkflag=false;
for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
$begincondition
insertRowInLastRow();
placeResourceInLastRow(
eval("document.forms.groupsort.title"+num+".value"),
eval("document.forms.groupsort.filelink"+num+".value"),
linkflag
);
linkflag=true;
$endcondition
}
opener.editmode=0;
opener.notclear=0;
opener.linkmode=0;
opener.draw();
self.close();
}
ENDADV
}
# output start of web page
my $html=&Apache::lonxml::xmlbegin();
$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.mostrecent=opener.newresource(opener.maxrow,2,opener.escape(title),
opener.escape(url),'false','normal');
opener.save();
if (linkflag) {
opener.joinres(opener.linkmode,opener.mostrecent,0);
}
opener.linkmode=opener.mostrecent;
}
$finishimport
function selectchange(val) {
var newval=0+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>
END
# read pertinent machine configuration
my $domain = $r->dir_config('lonDefDomain');
$iconpath = $r->dir_config('lonIconsURL') . "/";
my %shash; # sort order (key is resource location, value is sort order)
my %thash; # title (key is resource location, value is title)
my %nhash; # notes (key is resource location);
if ($env{'form.readfile'}) {
&readfromfile($r,\%shash,\%thash,\%nhash);
} else {
&readfromdb($r,\%shash,\%thash);
}
my $ctr = 0;
my $clen = scalar(keys %shash);
if (($clen > 1) || ($env{'form.readfile'})) {
my %lt=&Apache::lonlocal::texthash(
'fin'=> 'Finalize order of resources',
'gb' => 'Go Back',
'ns' => 'New Search',
'fi' => 'Finish Import',
'ca' => 'Cancel',
'co' => 'Change Order',
'ti' => 'Title',
'pa' => 'Path',
'in' => 'Include'
);
$r->print(&Apache::loncommon::bodytag('Sort Imported Resources'));
$r->print(<<END);
<b><font color="#888888">$lt{'fin'}</font></b>
<form method='post' action='/adm/groupsort' name='groupsort'
enctype='application/x-www-form-urlencoded'>
<input type="hidden" name="fnum" value="$clen" />
<input type="hidden" name="oldval" value="" />
<input type="hidden" name="newval" value="" />
<input type="hidden" name="mode" value="$env{'form.mode'}" />
<input type="hidden" name="readfile" value="$env{'form.readfile'}" />
<input type="hidden" name="recover" value="$env{'form.recover'}" />
END
# --- Expand here if "GO BACK" button desired
if ($env{'form.catalogmode'} eq 'groupimport') {
my $resurl = &Apache::loncommon::lastresurl();
$r->print(<<END);
<input type="button" name="alter" value="$lt{'gb'}"
onClick="window.location='$resurl?catalogmode=groupimport'" />
END
}
if ($env{'form.catalogmode'} eq 'groupsearch') {
$r->print(<<END);
<input type="button" name="alter" value="$lt{'ns'}"
onClick="window.location='/adm/searchcat?catalogmode=groupsearch&cleargroupsort=1'" />
END
}
# ---
$r->print(<<END);
<input type="button" name="alter" value="$lt{'fi'}"
onClick="finish_import()" />
<input type="button" name="alter" value="$lt{'ca'}" onClick="self.close()" />
END
$r->print("<table border='0'><tr><td bgcolor='#eeeeee'>");
$r->print("<table border=0><tr>\n");
if ($env{'form.readfile'}) {
$r->print("<td bgcolor='$titleclr'><b>$lt{'in'}</b></td>\n");
} else {
$r->print("<td colspan='2' bgcolor='$titleclr'><b>$lt{'co'}</b></td>\n");
}
$r->print("<td colspan='2' bgcolor='$titleclr'><b>$lt{'ti'}</b></td>\n");
$r->print("<td bgcolor='$titleclr'><b>$lt{'pa'}</b></td></tr>\n");
} else {
$r->print(<<END);
<body>
<form method='post' action='/adm/groupsort' name='groupsort'
enctype='application/x-www-form-urlencoded'>
<input type="hidden" name="fnum" value="$clen" />
<input type="hidden" name="oldval" value="" />
<input type="hidden" name="newval" value="" />
<input type="hidden" name="mode" value="$env{'form.mode'}" />
END
}
foreach (sort {$shash{$a}<=>$shash{$b}} (keys %shash)) {
my $key=$_;
$ctr++;
my $iconname=&Apache::loncommon::icon($key);
if (($clen > 1) || ($env{'form.readfile'})) {
$r->print("<tr><td bgcolor='$fileclr'>");
if ($env{'form.readfile'}) {
$r->print(&checkbox($ctr-1));
} else {
$r->print(&movers($clen,$ctr));
}
}
$r->print(&hidden($ctr-1,$thash{$key},$key));
if (($clen > 1) || ($env{'form.readfile'})) {
$r->print("</td>");
unless ($env{'form.readfile'}) {
$r->print("<td bgcolor='$fileclr'>".
&select_box($clen,$ctr).
"</td>");
}
$r->print("<td bgcolor='$fileclr'>");
$r->print("<img src='$iconname' />");
$r->print("</td><td bgcolor='$fileclr'>");
$r->print("$thash{$key}$nhash{$key}</td><td bgcolor='$fileclr'>\n");
$r->print("$key</td></tr>\n");
}
}
if (($clen > 1) || ($env{'form.readfile'})) {
$r->print("</table></td></tr></table></form>");
} else {
$r->print(<<END);
<script type="text/javascript">
finish_import();
</script>
END
}
$r->print(<<END);
</body>
</html>
END
return OK;
}
# --------------------------------------- Hidden values (returns scalar string)
sub hidden {
my ($sel,$title,$filelink) = @_;
my $string = '<input type="hidden" name="title'.$sel.'" value="'.$title.
'" />';
$string .= '<input type="hidden" name="filelink'.$sel.'" value="'.
$filelink.'" />';
return $string;
}
# --------------------------------------- Moving arrows (returns scalar string)
sub movers {
my ($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 $string;
}
# ------------------------------------------ Select box (returns scalar string)
sub select_box {
my ($total,$sel) = @_;
my $string;
$string = '<select name="alt'.$sel.'"';
$string .= " onChange='selectchange($sel)'>";
$string .= "<option name='o0' value='0'>".&mt('discard')."</option>";
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;
}
# ------------------------------------------------------------------- Checkbox
sub checkbox {
my $sel=shift;
return "<label><input type='checkbox' name='include$sel'".
($env{"form.include$sel"}?' checked="checked"':'').
' />'.&mt('Include').'</label>';
}
1;
__END__
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