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File:  [LON-CAPA] / loncom / interface / lonpickcourse.pm
Revision 1.29: download - view: text, annotated - select for diffs
Wed Sep 14 20:42:36 2005 UTC (18 years, 7 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_0_X, version_2_0_2, HEAD
Navigation links in bodytag not needed in pickcourse pop-up window.

# The LearningOnline Network
# Pick a course
#
# $Id: lonpickcourse.pm,v 1.29 2005/09/14 20:42:36 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::lonpickcourse;

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

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

# ------------------------------------------------------------ Print the screen
    my $html=&Apache::lonxml::xmlbegin();
    $r->print(<<ENDDOCUMENT);
$html
<head>
<title>The LearningOnline Network with CAPA</title>
</head>
ENDDOCUMENT
# Get parameters from query string
    &Apache::loncommon::get_unprocessed_cgi
        ($ENV{'QUERY_STRING'},['domainfilter','descriptfilter',
			       'sincefilter','form','cnumelement',
			       'cdomelement','cnameelement','roleelement',
                               'pickedcourse','instcodefilter',
                               'ownerfilter','coursefilter']);
# domain filter and selection
    my $domainfilter=$env{'form.domainfilter'};
    $domainfilter=~s/\W//g;
    unless ($domainfilter) { $domainfilter=''; }
    my $domainselectform=&Apache::loncommon::select_dom_form($domainfilter,
                                                          'domainfilter',1);
# description filter
    my $descriptfilter=$env{'form.descriptfilter'};
    unless ($descriptfilter) { $descriptfilter=''; }
    my $listdescript=&HTML::Entities::encode($descriptfilter,'<>&"');
# institutional code filter
    my $instcodefilter=$env{'form.instcodefilter'};
    unless ($instcodefilter) { $instcodefilter=''; }
    my $listinstcode=&HTML::Entities::encode($instcodefilter,'<>&"');
# course owner filter
    my $ownerfilter=$env{'form.ownerfilter'};
    unless ($ownerfilter) { $ownerfilter=''; }
    my $listowner=&HTML::Entities::encode($ownerfilter,'<>&"');
# course ID filter for DCs only
    my ($courseidtag,$coursefilter);
    if ($env{'user.adv'} && $domainfilter && exists($env{'user.role.dc./'.
                        $domainfilter.'/'})) {
        $coursefilter=$env{'form.coursefilter'};
        unless ($coursefilter) { $coursefilter=''; }
        my $listcourseid=&HTML::Entities::encode($coursefilter,'<>&"');
        $courseidtag = &mt('LON-CAPA course ID');
        $courseidtag .= qq|<input type="text" name="coursefilter" size="25" value="$listcourseid" />
        <br />
        |;
    }
# last course activity filter and selection
    my $sincefilter=$env{'form.sincefilter'};
    $sincefilter=~s/[^\d-]//g;
    unless ($sincefilter) { $sincefilter=-1; }
    my $sincefilterform=&Apache::loncommon::select_form($sincefilter,
       'sincefilter',('-1'=>'',
                      '86400' => 'today',
                      '604800' => 'last week',
                      '2592000' => 'last month',
                      '7776000' => 'last three months',
                      '15552000' => 'last six months',
                      '31104000' => 'last year',
                      'select_form_order' =>
                      ['-1','86400','604800','2592000','7776000',
		      '15552000','31104000']));
# if called from loncreateuser, report sections, then close
    my ($loaditem,$seclist);
    my $num_sections = 0;
    if ($env{'form.form'} eq 'cu' && $env{'form.pickedcourse'}) {
        $loaditem = 'onLoad="setSections()"';
        my ($cdom,$cnum) = split/_/,$env{'form.pickedcourse'};
        my %sections_count = ();
        $num_sections = &Apache::loncommon::get_sections($cdom,$cnum,\%sections_count);
        my @sections = ();
        if ($num_sections > 0) {
            @sections = (sort {$a <=> $b} keys %sections_count);
            $seclist = join('","',@sections);
        }
    }
    $r->print(&Apache::loncommon::bodytag("Selecting a Course",undef,$loaditem,undef,undef,undef,undef,1));
    my %lt=&Apache::lonlocal::texthash(
				       'cac' => 'Course Activity',
				       'cde' => 'Course Description',
				       'cdo' => 'Course Domain',
                                       'cin' => 'Course Institutional Code',
                                       'cow' => "Course Owner's usename");
    my ($name_code,$name_input);
    if (defined($env{'form.cnameelement'}) && $env{'form.cnameelement'} ne '') {
	$name_code = "opener.document.$env{'form.form'}.$env{'form.cnameelement'}.value=cdesc;";
	$name_input ='<input type="hidden" name="cnameelement" value="'.
	    $env{'form.cnameelement'}.'" />';
    }
    my $submitopener = '';
    my $autosubmit = '';
    my $roleelement = '';
    my $lastaction = 'self.close()';
    if ($env{'form.form'} eq 'cu') {
        $lastaction = 'document.courselist.pickedcourse.value = cdom+"_"+cname;'."\n".
                      'document.courselist.submit();';
    }
    my $roledom = $env{'form.roleelement'};
    if ($roledom) {
        $roleelement = '<input type="hidden" name="roleelement" value="'.$roledom.'" />';
        $submitopener = &Apache::lonroles::processpick($roledom);
        $autosubmit = 'process_pick("'.$roledom.'")';
    }
    $r->print(<<ENDSCRIPT);
<script>
function gochoose(cname,cdom,cdesc) {
    $name_code
    var openerForm = "$env{'form.form'}";
    opener.document.$env{'form.form'}.$env{'form.cnumelement'}.value=cname;
    if (openerForm == 'cu' || openerForm == 'rolechoice') {
         opener.document.$env{'form.form'}.$env{'form.cdomelement'}.value=cdom;
    }
    else {
        var slct=opener.document.$env{'form.form'}.$env{'form.cdomelement'};
        var i;
        for (i=0;i<slct.length;i++) {
            if (slct.options[i].value==cdom) { slct.selectedIndex=i; }
        }
    }
    $autosubmit
    $lastaction
}

function setSections() {
    var numSections = $num_sections
    var sectionsArray = new Array("$seclist")
    opener.document.$env{"form.form"}.currsec.length = 0
    if (numSections == 0) {
        opener.document.$env{"form.form"}.currsec.multiple=false
        opener.document.$env{"form.form"}.currsec.size=1;
        opener.document.$env{"form.form"}.currsec.options[0] = new Option('No existing sections','',false,false)
    }
    else {
        if (numSections == 1) {
            opener.document.$env{"form.form"}.currsec.multiple=false;
            opener.document.$env{"form.form"}.currsec.size=1;
            opener.document.$env{"form.form"}.currsec.options[0] = new Option('Select','',true,true);
            opener.document.$env{"form.form"}.currsec.options[1] = new Option('No section','',false,false) 
            opener.document.$env{"form.form"}.currsec.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
        }
        else {
            for (var i=0; i<numSections; i++) {
                opener.document.$env{"form.form"}.currsec.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
            }
            opener.document.$env{"form.form"}.currsec.multiple=true
            if (numSections < 3) {
                opener.document.$env{"form.form"}.currsec.size=numSections;
            }
            else {
                opener.document.$env{"form.form"}.currsec.size=3;
            }
            opener.document.$env{"form.form"}.currsec.options[0].selected = false
        }
    }
    self.close()
}
</script>
$submitopener
<form method="post">
<input type="hidden" name="cnumelement" value="$env{'form.cnumelement'}" />
<input type="hidden" name="cdomelement" value="$env{'form.cdomelement'}" />
$name_input
<input type="hidden" name="form" value="$env{'form.form'}" />
$roleelement
$lt{'cac'}: $sincefilterform
<br />
$lt{'cdo'}: $domainselectform
<br />
$lt{'cin'}:
<input type="text" name="instcodefilter" size="10" value="$listinstcode" />
<br />
$lt{'cow'}:
<input type="text" name="ownerfilter" size="10" value="$listowner" />
<br />
$courseidtag
$lt{'cde'}:
<input type="text" name="descriptfilter" size="40" value="$listdescript" />
<p><input type="submit" name="gosearch" value="Search" /></p>
</form>
<hr />
ENDSCRIPT
# ---------------------------------------------------------------- Get the data
    if ($env{'form.gosearch'}) {
        $r->print(&mt('Searching').' ...<br />&nbsp;<br />');
        $r->rflush();
	unless ($descriptfilter) { $descriptfilter='.'; }
        unless ($instcodefilter) { $instcodefilter='.'; }
        unless ($ownerfilter) { $ownerfilter='.'; }
        unless ($coursefilter) { $coursefilter='.'; }
        my $timefilter=($sincefilter==-1?1:time-$sincefilter);
	my %courses=
	    &Apache::lonnet::courseiddump
	    ($domainfilter,$descriptfilter,$timefilter,$instcodefilter,$ownerfilter,$coursefilter);
	$r->print('<form name="courselist">');
	my %by_descrip;
	foreach my $course (keys %courses) {
            my $descr;
            if ($courses{$course} =~ m/^([^:]*):/) {
                $descr = &Apache::lonnet::unescape($1);
            } else {
                $descr = &Apache::lonnet::unescape($courses{$course});
            }
            my $description = lc($descr);
            push (@{$by_descrip{$description}}, $course);
	}
	foreach my $description (sort(keys(%by_descrip))) {
            foreach my $course (@{$by_descrip{$description}}) {
	        my $cleandesc=&HTML::Entities::encode($description,'<>&"');
	        $cleandesc=~s/'/\\'/g;
	        my ($cdom,$cnum)=split(/\_/,$course);
                my ($descr,$instcode,$owner) = split/:/,$courses{$course};
	        $r->print('<input type="button" value="Select" onClick="gochoose('.
		      "'".$cnum."','".$cdom."','".$cleandesc."')".'" /> '.$description.' ('.
		      ($Apache::lonnet::domaindescription{$cdom}?
                       $Apache::lonnet::domaindescription{$cdom}:$cdom).")");
                unless ($instcode eq '') {
                    $r->print(" - ".&Apache::lonnet::unescape($instcode));
                }
                unless ($owner eq '') {
                    $r->print(", owner - ".&Apache::lonnet::unescape($owner));
                }
                $r->print("<br />\n");
            }
	}
	if (!%courses) { $r->print(&mt('None found')); }
        $r->print('<input type="hidden" name="form" value="'.$env{'form.form'}.'" />'."\n".
                   '<input type="hidden" name="pickedcourse" value="" />'."\n".
                   '<input type="hidden" name="cnumelement" value="'.$env{'form.cnumelement'}.'" />'."\n".
                   '<input type="hidden" name="cdomelement" value="'.$env{'form.cdomelement'}.'" />'."\n".
                   '</form>');
    }
    $r->print('</body></html>');
    return OK;
}

1;
__END__
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