Return to portfolio.pm CVS log

Up to [LON-CAPA] / loncom / interface

	Remove sub dedicated to file select (for responding to essay
	question) and integrated special file select stuff within
	the "standard" portfolio file display. This in preparation
	for making the two displays much more similar.

# 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::portfolio;
use strict;
use Apache::Constants qw(:common :http);
use Apache::loncommon;
use Apache::lonnet;
use Apache::lontexconvert;
use Apache::lonfeedback;
use Apache::lonlocal;

# receives a file name and path stub from username/userfiles/portfolio/
# returns an anchor tag consisting encoding filename and currentpath
sub make_anchor {
    my ($filename, $current_path, $current_mode, $field_name) = @_;
    my $anchor = '<a href="/adm/portfolio?selectfile='.$filename.'&currentpath='.$current_path.'&mode='.$current_mode.'&fieldname='.$field_name.'">'.$filename.'</a>';
    return $anchor;
}
my $dirptr=16384;
sub display_common {
    my ($r,$current_path,$is_empty,$dir_list)=@_;
    my $iconpath= $r->dir_config('lonIconsURL') . "/";
    $r->print('<table border="0" cellspacing="2" cellpadding="2"><tr valign="middle">');
    $r->print('<td bgcolor="#ccddaa" align="center">');
    my $displayOut = '<form method="post" enctype="multipart/form-data">';
    $displayOut .= '<input name="uploaddoc" type="file" />'.
        '<input type="hidden" name="currentpath" value="'.$current_path.'" />'.
        '<input type="hidden" name="action" value="'.$ENV{"form.action"}.'" />'.
        '<input type="hidden" name="fieldname" value="'.$ENV{"form.fieldname"}.'" />'.
        '<input type="hidden" name="mode" value="'.$ENV{"form.mode"}.'" />'. 
        '<input type="submit" name="storeupl" value="Upload" />'.
        '</form>';
    $r->print($displayOut);
    $r->print('</td></tr><tr><td bgcolor="#ccddaa" align="center">');
    $displayOut = '<form method="post">';
    $displayOut .= '<input name="newdir" type="input" />'.
        '<input type="hidden" name="currentpath" value="'.$current_path.'" />'.
        '<input type="hidden" name="action" value="'.$ENV{"form.action"}.'" />'.
        '<input type="hidden" name="fieldname" value="'.$ENV{"form.fieldname"}.'" />'.
        '<input type="hidden" name="mode" value="'.$ENV{"form.mode"}.'" />'. 
        '<input type="submit" name="createdir" value="'.&mt("Create Directory").'" />'.
        '</form>';
    $r->print($displayOut);
    $r->print('</td></tr></table>');
    my @tree = split (/\//,$current_path);
    $r->print('<font size="+2">'.&make_anchor('portfolio','/',$ENV{"form.mode"},$ENV{"form.fieldname"}).'/');
    if (@tree > 1){
        my $newCurrentPath = '';
        for (my $i = 1; $i< @tree; $i++){
            $newCurrentPath .= $tree[$i].'/';
            $r->print(&make_anchor($tree[$i],'/'.$newCurrentPath, $ENV{"form.mode"},$ENV{"form.fieldname"}).'/');
        }
    }
    $r->print('</font>');
    &Apache::lonhtmlcommon::store_recent('portfolio',$current_path,$current_path);
    $r->print('<br /><form method=post action="/adm/portfolio?mode='.$ENV{"form.mode"}.'&fieldname='.$ENV{"form.fieldname"}.'">'.
	      &Apache::lonhtmlcommon::select_recent('portfolio','currentpath',
						    'this.form.submit();'));
    $r->print("</form>");
}
sub display_directory {
    my ($r,$current_path,$is_empty,$dir_list)=@_;
    my $iconpath= $r->dir_config('lonIconsURL') . "/";
    my $display_out;
    my $select_mode;
    my $checked_files;
    my %locked_files = &Apache::lonnet::get_marked_as_readonly_hash ($ENV{'user.domain'},$ENV{'user.name'});
    if ($ENV{"form.mode"} eq 'selectfile'){
	&select_files($r);
	$checked_files =&Apache::lonnet::files_in_path($ENV{'user.name'},$ENV{'form.currentpath'});
	$select_mode = 'true';
    } 
    if ($is_empty && ($current_path ne '/')) {
        $display_out = '<form method="post" action="/adm/portfolio">'.
        '<input type="hidden" name="action" value="deletedir" />'.
        '<input type="submit" name="deletedir" value="'.&mt("Delete Directory").'" />'.
        '<input type="hidden" name="selectfile" value="" />'.
        '<input type="hidden" name="currentpath" value="'.$current_path.'" />'.
        '</form>';
        
        $r->print($display_out);
	return;
    }
    if ($select_mode eq 'true') {
        $r->print('<table border="0" cellspacing="2" cellpadding="2">'.
            '<tr><th>Select</th><th>&nbsp;</th><th>Name</th><th>Size</th><th>Last Modified</th></tr>');
        $r->print('<form method="post" name="checkselect" action="/adm/portfolio">');
    } else {
        $r->print('<table border="0" cellspacing="2" cellpadding="2">'.
            '<tr><th colspan="2">Actions</th><th>&nbsp;</th><th>Name</th><th>Size</th><th>Last Modified</th></tr>');
        $r->print('<form method="post" action="/adm/portfolio">');
    }
    my $href_location="/uploaded/$ENV{'user.domain'}/$ENV{'user.name'}/portfolio$current_path";
    foreach my $line (sort 
		      { 
			  my ($afile)=split('&',$a,2);
			  my ($bfile)=split('&',$b,2);
			  return (lc($afile) cmp lc($bfile));
		      } (@$dir_list)) {
    	#$strip holds directory/file name
    	#$dom 
    	my ($filename,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef)=split(/\&/,$line,16); 
    	$filename =~ s/\s+$//;
    	if (($filename ne '.') && ($filename ne '..')) {
            if ($dirptr&$testdir) {
                if ($select_mode eq 'true'){
                    $r->print('<tr bgcolor="#FFAA99"><td><img src="'.$iconpath.'folder_closed.gif"></td>');
                } else {
                    $r->print('<tr bgcolor="#FFAA99"><td colspan="2"><img src="'.$iconpath.'folder_closed.gif"></td>');
                }
                $r->print('<td>Go to ...</td>');
                $r->print('<td>'.&make_anchor($filename.'/',$current_path.$filename.'/',$ENV{'form.mode'},$ENV{"form.fieldname"}).'</td>'); 
                $r->print('</tr>'); 
            } else {
                $r->print('<tr bgcolor="#CCCCFF">');
                if ($select_mode eq 'true'){
                    $r->print('<td><input type="checkbox" name="selectfile" value="'.$filename.'"'); 
                    if ($$checked_files{$filename} eq 'selected') {
                        $r->print("CHECKED");
                    }
                    $r->print('></td>');
                } else {
                    if (exists $locked_files{$current_path.$filename}){
                        $r->print('<td colspan="2">Locked</td>');
                    } else {
                        $r->print('<td><input type="checkbox" name="selectfile" value="'.$filename.'" />
                            <a href="/adm/portfolio?rename='.$filename.'&amp;currentpath='.$current_path.'">Rename</a></td>
                            <td><a href="/adm/portfolio'.$current_path.$filename.'.meta">Meta</a>
                            </td>');
                    }
                }
                $r->print('<td><img src="'.$iconpath.'unknown.gif"></td>');
                $r->print('<td><a href="'.$href_location.$filename.'">'.
			    $filename.'</a></td>'); 
                $r->print('<td>'.$size.'</td>');
                $r->print('<td>'.&Apache::lonlocal::locallocaltime($mtime).'</td>');
                $r->print('</tr>'); 
            }
        }
    }
    if ($select_mode eq 'true') {
        $r->print('</table>
            <input type="hidden" name="continue" value="true">
            <input type="hidden" name="fieldname" value="'.$ENV{'form.fieldname'}.'">
            <input type="hidden" name="mode" value="selectfile">
            <input type="submit" name="submit" value="Select checked files, and continue selecting." /><br />
            <input type="button" name="doit" onClick= "finishSelect();" value="Select checked files, and close window" />
            <input type="hidden" name="currentpath" value="'.$current_path.'" />
        </form>');        
    } else {
        $r->print('</table>
        <input type="submit" name="doit" value="Delete Checked Files" />
        <input type="hidden" name="action" value="delete" />
        <input type="hidden" name="currentpath" value="'.$current_path.'" />
        </form>');
    }
}

sub open_form {
    my ($r)=@_;
    my @files=&Apache::loncommon::get_env_multiple('form.selectfile');
    $r->print('<form method="post" action="/adm/portfolio">');
    $r->print('<input type="hidden" name="action" value="'.
	      $ENV{'form.action'}.'" />');
    $r->print('<input type="hidden" name="confirmed" value="1" />');
    foreach (@files) {
        $r->print('<input type="hidden" name="selectfile" value="'.
	      $_.'" />');
    }
    $r->print('<input type="hidden" name="currentpath" value="'.
	      $ENV{'form.currentpath'}.'" />');
}

sub close_form {
    my ($r)=@_;
    $r->print('<p><input type="submit" value="'.&mt('Continue').
	      '" /></p></form>');
    $r->print('<form action="/adm/portfolio" method="POST">
               <p>
              <input type="hidden" name="currentpath" value="'.
	      $ENV{'form.currentpath'}.'" />
                 <input type="submit" value="'.&mt('Cancel').'" />
               </p></form>');

}

sub display_file {
    my ($path,$filename)=@_;
    my $display_file_text;
    if (!defined($path)) { $path=$ENV{'form.currentpath'}; }
    if (!defined($filename)) { 
        $filename=$ENV{'form.selectfile'};
        $display_file_text = '<tt>'.$path.$filename.'</tt>';
    } elsif (ref($filename) eq "ARRAY") {
        foreach (@$filename) {
            $display_file_text .= '<tt>'.$path.$_.'</tt><br />';
        }
    } elsif (ref($filename) eq "SCALAR") {
        $display_file_text = '<tt>'.$path.$filename.'</tt>';        
    }
    return $display_file_text;
}

sub done {
    my ($message)=@_;
    unless (defined $message) {
        $message='Done';
    }
    return ('<h3><a href="/adm/portfolio?currentpath='.
	    $ENV{'form.currentpath'}.
	    '&fieldname='.$ENV{'form.fieldname'}.
	    '&mode='.$ENV{'form.mode'}.
	    '">'.&mt($message).'</a></h3>');
}

sub delete {
    my ($r)=@_;
    my @check;
    my $file_name = $ENV{'form.currentpath'}.$ENV{'form.selectfile'};
    my @files=&Apache::loncommon::get_env_multiple('form.selectfile');

    if (&Apache::lonnet::is_locked($file_name,$ENV{'user.domain'},$ENV{'user.name'} ) eq 'true') {
        $r->print ("The file is locked and cannot be deleted.<br />");
        $r->print(&done('Back'));
    } else {
        if (scalar(@files)) {
            &open_form($r);
            $r->print('<p>'.&mt('Delete').' '.&display_file(undef,\@files).'?</p>');
            &close_form($r);
        } else {
            $r->print("No file was checked to delete.<br />");
            $r->print(&done());
        }
    }
} 

sub delete_confirmed {
    my ($r)=@_;
    my @files=&Apache::loncommon::get_env_multiple('form.selectfile');
    my $result;
    foreach my $delete_file (@files) {
        $result=&Apache::lonnet::removeuserfile($ENV{'user.name'},
					       $ENV{'user.domain'},'portfolio'.
					       $ENV{'form.currentpath'}.
					       $delete_file);
        if ($result ne 'ok') {
	$r->print('<font color="red"> An error occured ('.$result.
		  ') while trying to delete '.&display_file(undef, $delete_file).'</font><br />');
        }
    }
    $r->print(&done());
}

sub delete_dir {
    my ($r)=@_;
    &open_form($r);
    $r->print('<p>'.&mt('Delete').' '.&display_file().'?</p>');
    &close_form($r);
} 

sub delete_dir_confirmed {
    my ($r)=@_;
    my $directory_name = $ENV{'form.currentpath'};
    $directory_name =~ m/\/$/;
    $directory_name = $`;
    my $result=&Apache::lonnet::removeuserfile($ENV{'user.name'},
					       $ENV{'user.domain'},'portfolio'.
					       $directory_name);
					       
    if ($result ne 'ok') {
	$r->print('<font color="red"> An error occured (dir) ('.$result.
		  ') while trying to delete '.$directory_name.'</font><br />');
    } else {
        # now remove from recent
#        $r->print('<br /> removing '.$directory_name.'<br /');
        &Apache::lonhtmlcommon::remove_recent('portfolio',[$directory_name.'/']);
        my @dirs = split m!/!, $directory_name;
        
#        $directory_name =~ m/^(\/*\/)(\/*.)$/;
        $directory_name='/';
        for (my $i=1; $i < (@dirs - 1); $i ++){
            $directory_name .= $dirs[$i].'/';
        }
        $ENV{'form.currentpath'} = $directory_name;
    }
    $r->print(&done());
}

sub rename {
    my ($r)=@_;
    my $file_name = $ENV{'form.currentpath'}.$ENV{'form.rename'};
    if (&Apache::lonnet::is_locked($file_name,$ENV{'user.domain'},$ENV{'user.name'}) eq 'true') {
        $r->print ("The file is locked and cannot be renamed.<br />");
        $r->print(&done());
    } else {
        &open_form($r);
        $r->print('<p>'.&mt('Rename').' '.&display_file().' to 
                   <input name="filenewname" type="input" size="50" />?</p>');
        &close_form($r);
    }
}

sub rename_confirmed {
    my ($r)=@_;
    my $filenewname=&Apache::lonnet::clean_filename($ENV{'form.filenewname'});
    if ($filenewname eq '') {
	$r->print('<font color="red">'.
		  &mt("Error: no valid filename was provided to rename to.").
		  '</font><br />');
	$r->print(&done());
	return;
    } 
    my $result=
	&Apache::lonnet::renameuserfile($ENV{'user.name'},$ENV{'user.domain'},
            'portfolio'.$ENV{'form.currentpath'}.$ENV{'form.selectfile'},
            'portfolio'.$ENV{'form.currentpath'}.$filenewname);
    if ($result ne 'ok') {
	$r->print('<font color="red"> An errror occured ('.$result.
		  ') while trying to rename '.&display_file().' to '.
		  &display_file(undef,$filenewname).'</font><br />');
    }
    if ($filenewname ne $ENV{'form.filenewname'}) {
        $r->print("The new file name was changed from:<br /><strong>".$ENV{'form.filenewname'}."</strong> to <strong>$filenewname </strong>");
    }
    $r->print(&done());
}
sub select_files {
    my ($r)=@_;
    if ($ENV{'form.continue'} eq 'true') {
        # here we update the selections for the currentpath
        # eventually, have to handle removing those not checked, but . . . 
        my @items=&Apache::loncommon::get_env_multiple('form.selectfile');
        &Apache::lonnet::save_selected_files($ENV{'user.name'}, $ENV{'form.currentpath'}, @items);
    } else {
        if ($ENV{'form.currentpath'} eq '/') {
            #empty the file for a fresh start
            # &Apache::lonnet::clear_selected_files($ENV{'user.name'});
        }
    }
    my @files = &Apache::lonnet::files_not_in_path($ENV{'user.name'}, $ENV{'form.currentpath'});
    my $java_files = join ",", @files;
    if ($java_files) {
        $java_files.=',';
    }
    my $javascript =(<<ENDSMP);
        <script language='javascript'>
        function finishSelect() {
ENDSMP
    $javascript .= 'fileList = "'.$java_files.'";';
    $javascript .= (<<ENDSMP);
            for (i=0;i<document.forms.checkselect.length;i++) { 
                if (document.forms.checkselect[i].checked){
                    fileList = fileList + document.forms.checkselect.currentpath.value + document.forms.checkselect[i].value + "," ;
                }
            }
            opener.document.forms.lonhomework.
ENDSMP
    $javascript .= $ENV{'form.fieldname'};
    $javascript .= (<<ENDSMP);
        .value=fileList;
            self.close();
        }
        </script>
ENDSMP
    $r->print($javascript);
    $r->print("<h1>Select portfolio files</h1>
                Check as many as you wish in response to the essay problem.<br />");
    $r->print("<strong>Files selected from other directories:</strong><br />");
    foreach (&Apache::lonnet::files_not_in_path($ENV{'user.name'}, $ENV{'form.currentpath'})) {
        $r->print($_."<br />");
    }
}
sub upload {
    my ($r)=@_;
    my $fname=$ENV{'form.uploaddoc.filename'};
    my $filesize = (length($ENV{'form.uploaddoc'})) / 1000; #express in k (1024?)
    my $disk_quota = 20000; # expressed in k
    $fname=&Apache::lonnet::clean_filename($fname);
    my $portfolio_root = &Apache::loncommon::propath($ENV{'user.domain'},
						 $ENV{'user.name'}).
						'/userfiles/portfolio';
    # Fixme --- Move the checking for existing file to LOND error return
    my @dir_list=&Apache::lonnet::dirlist($ENV{'form.currentpath'},
					  $ENV{'user.domain'},
					  $ENV{'user.name'},$portfolio_root);
    my $found_file = 0;
    my $locked_file = 0;
    foreach my $line (@dir_list) {
        my ($file_name)=split(/\&/,$line,2);
        if ($file_name eq $fname){
            $found_file = 1;
            if (&Apache::lonnet::is_locked($ENV{'form.currentpath'}.$file_name,$ENV{'user.domain'},$ENV{'user.name'} ) eq 'true') {
                $locked_file = 1;
            } 
        }
    }
    my $current_disk_usage = &Apache::lonnet::diskusage($ENV{'user.domain'}, $ENV{'user.name'},$portfolio_root);
    if ((($current_disk_usage/1000) + $filesize) > $disk_quota){
        $r->print('<font color="red">Unable to upload <strong>'.$fname.' (size = '.$filesize.' kilobytes</strong>. Disk quota will be exceeded.'.
                  '<br />Disk quota is '.$disk_quota.' kilobytes. Your current disk usage is '.$current_disk_usage.' kilobytes.');
        $r->print(&done('Back'));
    } 
    elsif ($found_file){
        if ($locked_file){
            $r->print('<font color="red">Unable to upload <strong>'.$fname.'</strong>, a <strong>locked</strong> file by that name was found in <strong>portfolio'.$ENV{'form.currentpath'}.'</strong></font>'.
                  '<br />You will be able to rename or delete existing '.$fname.' after a grade has been assigned.');
            $r->print(&done('Back'));      
        } else {   
            $r->print('<font color="red">Unable to upload <strong>'.$fname.'</strong>, a file by that name was found in <strong>portfolio'.$ENV{'form.currentpath'}.'</strong></font>'.
                  '<br />To upload, rename or delete existing '.$fname.' in portfolio'.$ENV{'form.currentpath'});
            $r->print(&done('Back'));
        }
    } else {
        my $result=&Apache::lonnet::userfileupload('uploaddoc','',
	        	 'portfolio'.$ENV{'form.currentpath'});
        if ($result !~ m|^/uploaded/|) {
            $r->print('<font color="red"> An errror occured ('.$result.
	              ') while trying to upload '.&display_file().'</font><br />');
	    $r->print(&done('Back'));
        } else {
            $r->print(&done());
        }
    }
}

sub createdir {
    my ($r)=@_;
    my $newdir=&Apache::lonnet::clean_filename($ENV{'form.newdir'});
    if ($newdir eq '') {
    	$r->print('<font color="red">'.
	    	  &mt("Error: no directory name was provided.").
		      '</font><br />');
	    $r->print(&done());
	    return;
    } 
    my $portfolio_root = &Apache::loncommon::propath($ENV{'user.domain'},
						 $ENV{'user.name'}).
						'/userfiles/portfolio';
    my @dir_list=&Apache::lonnet::dirlist($ENV{'form.currentpath'},
					  $ENV{'user.domain'},
					  $ENV{'user.name'},$portfolio_root);
    my $found_file = 0;
    foreach my $line (@dir_list) {
        my ($filename)=split(/\&/,$line,2);
        if ($filename eq $newdir){
            $found_file = 1;
        }
    }
    if ($found_file){
    	    $r->print('<font color="red"> Unable to create a directory named <strong>'.$newdir.
    	            ' </strong>a file or directory by that name already exists.</font><br />');
    } else {
        my $result=&Apache::lonnet::mkdiruserfile($ENV{'user.name'},
	         $ENV{'user.domain'},'portfolio'.$ENV{'form.currentpath'}.$newdir);
        if ($result ne 'ok') {
    	    $r->print('<font color="red"> An errror occured ('.$result.
	    	      ') while trying to create a new directory '.&display_file().'</font><br />');
        }
    }
    if ($newdir ne $ENV{'form.newdir'}) {
        $r->print("The new directory name was changed from:<br /><strong>".$ENV{'form.newdir'}."</strong> to <strong>$newdir </strong>");  
    }
    $r->print(&done());
}

sub handler {
    # this handles file management
    my $r = shift;
    my $portfolio_root = &Apache::loncommon::propath($ENV{'user.domain'},
							 $ENV{'user.name'}).
							'/userfiles/portfolio';
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                            ['selectfile','currentpath','meta',
					     'currentfile','action','fieldname','mode','rename']);
    &Apache::loncommon::no_cache($r);
    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    # Give the LON-CAPA page header
    my $html=&Apache::lonxml::xmlbegin();
    $r->print($html.'<head><title>'.
              &mt('Portfolio Manager').
              "</title></head>\n");
    if ($ENV{"form.mode"} eq 'selectfile'){
        $r->print(&Apache::loncommon::bodytag('Portfolio Manager',undef,undef,1));
    } else {
        $r->print(&Apache::loncommon::bodytag('Portfolio Manager'));
    }
    $r->rflush();
	if (($ENV{'form.storeupl'} eq 'Upload') & (!$ENV{'form.uploaddoc.filename'})){
   	    $r->print('<font color="red"> No file was selected to upload.'.
   	            'To upload a file, click <strong>Browse...</strong>'.
   	            ', select a file, then click <strong>Upload</strong>,</font>');
	}
    if ($ENV{'form.meta'}) {
        &open_form($r);
#        $r->print(&edit_meta_data($r, $ENV{'form.currentpath'}.$ENV{'form.selectfile'}));
        $r->print('Edit the meta data<br />');
        &close_form($r);
    }
    if ($ENV{'form.store'}) {
    }

    if ($ENV{'form.uploaddoc.filename'}) {
	&upload($r);
    } elsif ($ENV{'form.action'} eq 'delete' && $ENV{'form.confirmed'}) {
	&delete_confirmed($r);
    } elsif ($ENV{'form.action'} eq 'delete') {
	&delete($r);
    } elsif ($ENV{'form.action'} eq 'deletedir' && $ENV{'form.confirmed'}) {
	&delete_dir_confirmed($r);
    } elsif ($ENV{'form.action'} eq 'deletedir'){
	&delete_dir($r);
    } elsif ($ENV{'form.action'} eq 'rename' && $ENV{'form.confirmed'}) {
	&rename_confirmed($r);
    } elsif ($ENV{'form.rename'}) {
        $ENV{'form.selectfile'} = $ENV{'form.rename'};
        $ENV{'form.action'} = 'rename';
	&rename($r);
    } elsif ($ENV{'form.createdir'}) {
	&createdir($r);
    } else {
	my $current_path='/';
	if ($ENV{'form.currentpath'}) {
	    $current_path = $ENV{'form.currentpath'};
	}
	my @dir_list=&Apache::lonnet::dirlist($current_path,
					    $ENV{'user.domain'},
					    $ENV{'user.name'},$portfolio_root);
	if ($dir_list[0] eq 'no_such_dir'){
	    # two main reasons for this:
            #    1) never been here, so directory structure not created
	    #    2) back-button navigation after deleting a directory
	    if ($current_path eq '/'){
	        &Apache::lonnet::mkdiruserfile($ENV{'user.name'},
					       $ENV{'user.domain'},'portfolio');
	    } else {
                # some directory that snuck in get rid of the directory
                # from the recent pulldown, just in case
		&Apache::lonhtmlcommon::remove_recent('portfolio',
						      [$current_path]);
		$current_path = '/'; # force it back to the root        
	    }
	    # now grab the directory list again, for the first time
	    @dir_list=&Apache::lonnet::dirlist($current_path,
					    $ENV{'user.domain'},
					    $ENV{'user.name'},$portfolio_root);
        }
	# need to know if directory is empty so it can be removed if desired
	my $is_empty=(@dir_list == 2);
	&display_common($r,$current_path,$is_empty,\@dir_list);
        &display_directory($r,$current_path,$is_empty,\@dir_list);
	$r->print("</body>\n</html>\n");
	return OK;
    }
}
1;
__END__