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Up to [LON-CAPA] / loncom / interface

Style - naming.  Caller (grppage) obsolete.  Store uploaded photos in right place. Add "Edit group settings" link for users with mdg priv in course.  Priv checking for roles with section specificity. Ensure vcg and mdg privs see page contents as well as links to group tools. Some &mt().  loncoursegroups - wording changes.  Add breadcrumb for access via "Edit settings" link on group home page.

# The LearningOnline Network
# Simple Page Editor
#
# $Id: lonsimplepage.pm,v 1.45 2006/07/20 03:11:52 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::lonsimplepage;

use strict;
use Apache::Constants qw(:common);
use Apache::loncommon;
use Apache::lonnet;
use Apache::lontexconvert;
use Apache::lonfeedback;
use Apache::lonlocal;
use Apache::lonprintout;
use Apache::lonxml;
use Apache::longroup;
use LONCAPA;

sub handler {
    my $r = shift;
    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    return OK if $r->header_only;
    my $target=$env{'form.grade_target'};
# ------------------------------------------------------------ Print the screen
    if ($target eq 'tex') {
	$r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
    } 
    my (undef,undef,$udom,$uname,$marker)=split(/\//,$r->uri);
# Is this even in a course?
    unless ($env{'request.course.id'}) {
	if ($target ne 'tex') {
	    &Apache::loncommon::simple_error_page($r,'','Not in a course');
	} else {
	    $r->print('\textbf{Not in a course}\end{document}');
	}
	return OK;
    }

    my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
    my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
    my ($namespace,$group,$group_desc,$group_home_view,$group_home_edit,
        $group_view_perm,$group_edit_perm);
    my %curr_group = ();
    my %groupinfo = ();
    if ($dom && $crs && ($udom eq $dom) && ($uname eq $crs)) {
        $marker =~ s/\W//g;
        $group = $marker;
        my %curr_groups = &Apache::longroup::coursegroups($dom,$crs,$group);
        if (!%curr_groups) {
	    &Apache::loncommon::simple_error_page($r,'','Invalid group name');
	    return OK;
        }
        %groupinfo = 
	    &Apache::longroup::get_group_settings($curr_groups{$group});
        $group_desc = &unescape($groupinfo{'description'});
        $namespace = 'grppage_'.$group;
    } else {
        $marker=~s/\D//g;
        $namespace = 'smppage_'.$marker;
    }

    if (!$marker) {
	&Apache::loncommon::simple_error_page($r,'','Invalid call');
	return OK;
    }

# --------------------------------------------------------- The syllabus fields
    my %syllabusfields=&Apache::lonlocal::texthash(
       'aaa_title'         => 'Page Title',
       'bbb_content'       => 'Content',
       'ccc_webreferences' => 'Web References');
    if ($group ne '') {
        $syllabusfields{'abb_links'} = &mt('Available Group Tools');
    }


# ------------------------------------------------------------ Get query string
    &Apache::loncommon::get_unprocessed_cgi
                        ($ENV{'QUERY_STRING'},['forcestudent','forceedit',
                                               'register','ref']);
# --------------------------------------------------------------- Force Student
    my $forcestudent='';
    if ($env{'form.forcestudent'} || $target eq 'tex' ) { $forcestudent='student'; };
    my $forceedit='';
    if ($env{'form.forceedit'}) { $forceedit='edit'; }

    my $refarg;
    if ($env{'form.ref'}) {
        $refarg = '&ref='.$env{'form.ref'};
    }
   
    my %syllabus=&Apache::lonnet::dump($namespace,$dom,$crs);
       
# --------------------------------------- There is such a user, get environment

    if ($target ne 'tex') {
        my $title = 'Course Page';
        if ($group ne '') {
            $title = 'Group Page';
        }
	my $start_page = 
	    &Apache::loncommon::start_page($title,undef,
					   {'function'       => $forcestudent,
					    'domain'         => $dom,
					    'force_register' =>
						$env{'form.register'},});
	$r->print($start_page);
    }

    if ($group ne '') {
        my $group_view_perm =
               &Apache::lonnet::allowed('vcg',$env{'request.course.id'}.
               ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
        $group_edit_perm =
               &Apache::lonnet::allowed('mdg',$env{'request.course.id'}.
               ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
        $group_home_view = &Apache::lonnet::allowed('vgh',
                                         $env{'request.course.id'}.'/'.$group);
        $group_home_edit = &Apache::lonnet::allowed('mgh',
                                         $env{'request.course.id'}.'/'.$group);
        if ($group_view_perm || $group_edit_perm || $group_home_view || 
            $group_home_edit || &Apache::longroup::check_group_access($group)) {
            if (($env{'form.ref'} eq 'grouplist') && ($target ne 'tex')) {
                $r->print(&grouppage_breadcrumbs($dom,$crs,$group,$group_desc));
            }
            if ((!$group_home_edit) && (!$group_home_view) && 
                (!$group_view_perm) && (!$group_edit_perm)) {  
                &display_group_links($r,$target,$group,'view',$refarg,%groupinfo);
                return OK;
            }
        } else {
	    my $msg = 
		&mt('You do not currently have rights to view this group.');
            if ($target ne 'tex') {
                $r->print("<p>$msg</p>".
			  &Apache::loncommon::end_page());
            } else {
                $r->print('\textbf{'.$msg.'}\end{document}');
            }
	    return OK;
        }
    }

    my $allowed;
    
    if ($group ne '') {
        $allowed  = $group_edit_perm;
        if (!$allowed) {
            $allowed = $group_home_edit; 
        }
    } else { 
        $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
    }
    my $privileged=$allowed;
    if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
	$forcestudent='student';
    }

    if ($forcestudent or $target eq 'tex') { $allowed=0; }
    
    if ($allowed) {
	$r->print('<p>'.
		  &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'<br /><a href="'.$r->uri.'?forcestudent=1'.$refarg.'"><font size="+1">'.&mt('Show Student View').'</font></a>'.
		  &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
    } elsif ($privileged and $target ne 'tex') {
        my $edittext = &mt('Edit');
        if ($group ne '') {
            $edittext = &mt('Edit Group Homepage');
        }
	$r->print('<a href="'.$r->uri.'?forceedit=edit'.$refarg.'"><font size="+1">'.$edittext.'</font></a>');
        if ($group ne '') {
            if ($group_edit_perm) {
                $r->print('&nbsp;&nbsp;&nbsp;<font size="+1">'.
               '<a href="/adm/coursegroups?action=modify&amp;refpage=grouplist'.
               '&amp;state=pick_task&amp;groupname='.$group.'">'.
               &mt('Edit Group Settings').'</a></font>');
            }
        }    
    } 
    if (($env{'form.uploaddoc.filename'} and $target ne 'tex') &&
	($env{'form.storeupl'}) && ($allowed)) {
	if ($env{'form.uploaddoc.filename'}=~/\.(gif|jpg|png|jpeg)$/i) {
	    if ($syllabus{'uploaded.photourl'}) {
		&Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
	    }
            if ($group ne '') {
                $syllabus{'uploaded.photourl'}=&Apache::lonnet::userfileupload(
                                              'uploaddoc',1,"grouppage/$group");
            } else {
	        $syllabus{'uploaded.photourl'}=
		     &Apache::lonnet::userfileupload('uploaddoc',1,'simplepage');
            }
	}
	$syllabus{'uploaded.lastmodified'}=time;
	&Apache::lonnet::put($namespace,\%syllabus,$dom,$crs);
    }
    if (($allowed) && ($env{'form.storesyl'})) {
	foreach (keys %syllabusfields) {
	    my $field=$env{'form.'.$_};
	    chomp($field);
	    $field=~s/\s+$//s;
	    $field=~s/^\s+//s;
	    $field=~s/\<br\s*\/*\>$//s;
	    $field=&Apache::lonfeedback::clear_out_html($field,1);
	    $syllabus{$_}=$field;
	}
	$syllabus{'uploaded.lastmodified'}=time;
	&Apache::lonnet::put($namespace,\%syllabus,$dom,$crs);
    }

# ---------------------------------------------------------------- Get syllabus
    if ((($syllabus{'uploaded.lastmodified'}) && 
         (($group ne '' && ($group_home_view || $group_edit_perm || 
           $group_view_perm)) || ($group eq ''))) || ($allowed)) { 
	if ($syllabus{'uploaded.photourl'}) {
	    &Apache::lonnet::allowuploaded('/adm/smppg',
					   $syllabus{'uploaded.photourl'});
	    
	    my $image='<img src="'.$syllabus{'uploaded.photourl'}.'"
                            align="right" />';
	    if ($target eq 'tex') {
		$image=&Apache::lonxml::xmlparse($r,'tex',$image);
	    }
	    $r->print($image);
	}
	if ($allowed) {
	    $r->print(
		      '<form method="post" enctype="multipart/form-data">'.
		      '<input type="hidden" name="forceedit" value="edit" />'.
		      '<h3>Upload a Photo</h3>'.
		      '<input type="file" name="uploaddoc" size="50">'.
		      '<input type="submit" name="storeupl" value="Upload">'.
		      '</form><form method="post">');
	}
	foreach (sort keys %syllabusfields) {
	    if (($syllabus{$_}) || ($allowed)) {
		my $message=$syllabus{$_};
		&Apache::lonfeedback::newline_to_br(\$message);
		$message
		    =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
		if ($allowed) {
		    $message=&Apache::lonspeller::markeduptext($message);
		}
		$message=&Apache::lontexconvert::msgtexconverted($message);
                if ($_ eq 'abb_links' && $group ne '') {
                    $r->print('<br /><input type="hidden" name="'.$_.
                                          '" value="'.$syllabus{$_}.'" />');
                    &display_group_links($r,$target,$group,'edit',$refarg,
                                         %groupinfo);
                    $r->print('<br />');
                } elsif ($_ eq 'aaa_title') {
                    if ($target ne 'tex') {
                        $r->print('<h1>'.$message.'</h1>');
                    } else {
                        my $safeinit;
                        $r->print(&Apache::lonxml::xmlparse($r,'tex','<h1>'.$message.'</h1>'));
                    }
                    if ($allowed) {
                        if ($env{'form.grade_target'} ne 'tex') {
                            $r->print(
                                      '<br />Title<br /><textarea cols="80" rows="2" name="'.$_.'">'.
                                      $syllabus{$_}.
                                      '</textarea><input type="submit" name="storesyl" value="Store" />');
                        } else {
                            my $safeinit;
                            $r->print(&Apache::lonxml::xmlparse($r,'tex',$syllabus{$_},$safeinit));
                        }
                    }
                } else {
		    if (($_ ne 'bbb_content') || ($allowed)) {
			if ($target ne 'tex') {
			    $r->print('<h3>'.$syllabusfields{$_}.'</h3>');
			} else {
			    my $safeinit;
			    $r->print(&Apache::lonxml::xmlparse($r,'tex','<h3>'.$syllabusfields{$_}.'</h3>'));
			}
		    }
		    if ($target ne 'tex') {
			$r->print('<blockquote>'.
				  $message.'</blockquote>');
		    } else {
			my $safeinit;
			$r->print(&Apache::lonxml::xmlparse($r,'tex',$message));
		    }
		    if ($allowed) {
			if ($target ne 'tex') {
			    $r->print('<br /><textarea cols="80" rows="24" name="'.$_.'" id="'.$_.'">'.
				      $syllabus{$_}.
				      '</textarea><input type="submit" name="storesyl" value="Store" />');
			} else {
			    my $safeinit;
			    $r->print(&Apache::lonxml::xmlparse($r,'tex',$syllabus{$_},$safeinit));
			}
		    }
		}
	    }
	}
	if ($allowed && ($env{'form.grade_target'} ne 'tex')) {
	    $r->print(&Apache::lonhtmlcommon::htmlareaselectactive
		      ('bbb_content').'</form>');
	}
	if ($env{'form.grade_target'} ne 'tex') {$r->print('</p>');}
    } else {
        if ($group ne '') {
            &display_group_links($r,$target,$group,'view',$refarg,%groupinfo);
        } else {
	    $r->print(&mt('<p>No page information provided.</p>'));
        }
    }
    if ($env{'form.grade_target'} ne 'tex') {
	$r->print(&Apache::loncommon::end_page());
    } else {
	$r->print('\end{document}');
    }
    return OK;
}

sub display_group_links {
    my ($r,$target,$group,$context,$refarg,%groupinfo) = @_;
    my @available = ();
    my %menu = ();
    %{$menu{'email'}} = (
                        text => 'Group e-mail',
                        href => '/adm/email?compose=group&amp;group='.$group.
                                $refarg,
                      );
    %{$menu{'discussion'}} = (
                        text => 'Discussion Boards',
                        href => '/adm/groupboards?group='.$group.$refarg,
                      );
    %{$menu{'chat'}} = (
                        text => 'Group chat',
                        href => "javascript:group_chat('$group')",
                      );
    %{$menu{'files'}} = (
                        text => 'File repository',
                        href => '/adm/coursegrp_portfolio?group='.$group.
                                $refarg,
                      );
    %{$menu{'roster'}} = (
                        text => 'Membership roster',
                        href => '/adm/grouproster?group='.$group.$refarg,
                      );
    foreach my $tool (sort(keys(%menu))) {
        if ($groupinfo{functions}{$tool} eq 'on') {
            push(@available,$tool);
        }
    }
    if (@available > 0) {
        my $output = '<table cellspacing="4" cellpadding="4"><tr>';
        foreach my $tool (@available) {
            if ($target eq 'tex') {
                $output .= '<td>'.&mt($menu{$tool}{text}).'</td>';
            } else {
                $output .= '<td><a href="'.$menu{$tool}{href}.'">'.
                           $menu{$tool}{text}.'</a></td>';
            }
        }
        $output .= '</tr></table>';
        if ($target eq 'tex') {
            $r->print(&Apache::lonxml::xmlparse($r,'tex',&mt('Available functions').'<br /><br />'.$output));
        } else {
            $r->print('<h3>'.&mt('Available Group Tools').'</h3>'.$output);
        }
    } else {
        my $output;
        if ($context eq 'edit') {
            $output = &mt('No group functionality.');
        } else {  
            $output = &mt('No group functionality (e.g., e-mail, discussion, chat or file upload) is currently available to you in this group: <b>[_1]</b>.',&unescape($groupinfo{'description'}));
        }
        if ($target eq 'tex') {
            $r->print(&Apache::lonxml::xmlparse($r,'tex',$output));
        } else {
            $r->print($output);
        }
    }
}

sub grouppage_breadcrumbs {
    my ($cdom,$cnum,$group,$description) = @_;
    &Apache::lonhtmlcommon::clear_breadcrumbs();
    &Apache::lonhtmlcommon::add_breadcrumb
        ({href=>"/adm/coursegroups",
          text=>"Groups",
          title=>"Display Groups"},
        {href=>"/adm/$cdom/$cnum/$group/smppg?ref=grouplist",
          text=>"Group: $description",
          title=>"Go to group's home page"},
        );
    my $output .= &Apache::lonhtmlcommon::breadcrumbs(&mt('Group page - [_1]',
                                                           $description));
    return $output;
}

1;
__END__