--- loncom/interface/portfolio.pm	2004/06/21 14:10:05	1.5
+++ loncom/interface/portfolio.pm	2004/12/04 19:08:42	1.62
@@ -18,12 +18,9 @@
 #
 # /home/httpd/html/adm/gpl.txt
 #
-
-
 # http://www.lon-capa.org/
 #
 
-
 package Apache::portfolio;
 use strict;
 use Apache::Constants qw(:common :http);
@@ -33,41 +30,530 @@ 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 %locked_files=&Apache::lonnet::dump('file_permissions',
+                                  $ENV{'user.domain'},$ENV{'user.name'});
+    my $locked_file;
+    foreach my $key (keys %locked_files) {
+        $locked_file .= $locked_files{$key}.':';
+    }
+    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;
+    }
+    $r->print('<table border="0" cellspacing="2" cellpadding="2">'.
+            '<tr><th>Actions</th><th>&nbsp;</th><th>Name</th><th>Size</th><th>Last Modified</th></tr>');
+    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(/\&/,$line,16); 
+    	if (($filename ne '.') && ($filename ne '..')) {
+            if ($dirptr&$testdir) {
+                $r->print('<tr bgcolor="#FFAA99"><td><img src="'.$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">');
+                $r->print('<td>
+                    <form method="post" action="/adm/portfolio">
+                    <select name="action">
+                        <option value=""></option>
+                        <option value="delete">'.&mt("Delete").'</option>
+                        <option value="rename">'.&mt("Rename").'</option>
+                    </select>
+                    <input type="submit" name="doit" value="Go" />
+                    <input type="hidden" name="selectfile" value="'.$filename.'" />
+                    <input type="hidden" name="currentpath" value="'.$current_path.'" />
+                    </form>
+                    </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>'); 
+            }
+        }
+    }
+#   <tr bgcolor="#FFAA99"> pink bg 
+#   <tr bgcolor="#CCCCFF"> blue bg            
+#   $r->print(&display_directory($current_path, $currentFile, @dir_list));
+#    $r->print('</td>><td>');
+#   $r->print(&display_actions($current_path, $currentFile, $isEmpty));
+    $r->print('</table></form>');
+}
+sub display_file_select {
+    my ($r,$current_path,$is_empty,$dir_list)=@_;
+    my $iconpath= $r->dir_config('lonIconsURL') . "/";
+    my $display_out;
+    my $checked_files = &Apache::lonnet::files_in_path($ENV{'user.name'}, $ENV{'form.currentpath'});
+    foreach my $key (keys %$checked_files) {
+        &Apache::lonnet::logthis("a key is $key $$checked_files{$key} is the value");
+    }
+    if ($is_empty && ($current_path ne '/')) {
+        $display_out = '<form method="post" action="/adm/portfolio">'.
+        '<input type="hidden" name="action" value="deletedir" />'.
+        '<input type="submit" name="deletedir" value="'.&mt("Delete Directory").'" />'.
+        '<input type="hidden" name="selectfile" value="" />'.
+        '<input type="hidden" name="currentpath" value="'.$current_path.'" />'.
+
+        '</form>';
+        
+        $r->print($display_out);
+	return;
+    }
+    $r->print('<table border="0" cellspacing="2" cellpadding="2">'.
+            '<tr><th>Select</th><th>&nbsp;</th><th>Name</th><th>Size</th><th>Last Modified</th></tr>');
+    my $href_location="/uploaded/$ENV{'user.domain'}/$ENV{'user.name'}/portfolio$current_path";
+    $r->print('<form method="post" name="checkselect" action="/adm/portfolio">');
+    foreach my $line (sort 
+		      { 
+			  my ($afile)=split('&',$a,2);
+			  my ($bfile)=split('&',$b,2);
+			  return (lc($afile) cmp lc($bfile));
+		      } (@$dir_list)) {
+    	#$strip holds directory/file name
+    	#$dom 
+    	my ($filename,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef)=split(/\&/,$line,16); 
+    	$filename =~ s/\s+$//;
+    	if (($filename ne '.') && ($filename ne '..')) {
+            if ($dirptr&$testdir) {
+                $r->print('<tr bgcolor="#FFAA99"><td><img src="'.$iconpath.'folder_closed.gif"></td>');
+                $r->print('<td>Go to ...</td>');
+                $r->print('<td>'.&make_anchor($filename.'/',$current_path.$filename.'/',$ENV{'form.mode'},$ENV{"form.fieldname"}).'</td>'); 
+                $r->print('</tr>'); 
+            } else {
+                $r->print('<tr bgcolor="#CCCCFF">');
+                $r->print('<td><input type="checkbox" name="selectedfile" value="'.$filename.'"'); 
+                if ($$checked_files{$filename} eq 'selected') {
+                    $r->print("CHECKED");
+                    &Apache::lonnet::logthis("checked");
+                } else {
+                    &Apache::lonnet::logthis("not checked $$checked_files{$filename} $filename");
+                }
+                $r->print('></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>'); 
+            }
+        }
+    }
+    $r->print('</table>
+            <input type="hidden" name="continue" value="true">
+            <input type="hidden" name="fieldname" value="'.$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="'.$current_path.'" />
+    </form>');
+}
+
+sub open_form {
+    my ($r)=@_;
+    $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" />');
+    $r->print('<input type="hidden" name="selectfile" value="'.
+	      $ENV{'form.selectfile'}.'" />');
+    $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,$filename)=@_;
+    if (!defined($path)) { $path=$ENV{'form.currentpath'}; }
+    if (!defined($filename)) { $filename=$ENV{'form.selectfile'}; }
+    return '<tt>'.$path.$filename.'</tt>';
+}
+
+sub done {
+    return ('<h3><a href="/adm/portfolio?currentpath='.
+	    $ENV{'form.currentpath'}.
+	    '&fieldname='.$ENV{'form.fieldname'}.
+	    '&mode='.$ENV{'form.mode'}.
+	    '">'.&mt('Done').'</a></h3>');
+}
+
+sub delete {
+    my ($r)=@_;
+    my @check;
+    my $file_name = $ENV{'form.currentpath'}.$ENV{'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 />");
+        $r->print(&done());
+    } else {
+        &open_form($r);
+        $r->print('<p>'.&mt('Delete').' '.&display_file().'?</p>');
+        &close_form($r);
+    }
+} 
+
+sub delete_confirmed {
+    my ($r)=@_;
+    my $result=&Apache::lonnet::removeuserfile($ENV{'user.name'},
+					       $ENV{'user.domain'},'portfolio'.
+					       $ENV{'form.currentpath'}.
+					       $ENV{'form.selectfile'});
+    if ($result ne 'ok') {
+	$r->print('<font color="red"> An error occured ('.$result.
+		  ') while trying to delete '.&display_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.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 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 />');
+    }
+    $r->print(&done());
+}
+sub select_files {
+    my ($r)=@_;
+    if ($ENV{'form.continue'} eq 'true') {
+        # here we update the selections for the currentpath
+        # eventually, have to handle removing those not checked, but . . . 
+        my @items=&Apache::loncommon::get_env_multiple('form.selectedfile');
+        &Apache::lonnet::save_selected_files($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 $java_script =(<<ENDSMP);
+        <script language='javascript'>
+        function finishSelect() {
+ENDSMP
+    $java_script .= 'fileList = "'.$java_files.'";';
+    $java_script .= (<<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
+    $java_script .= $ENV{'form.fieldname'};
+    $java_script .= (<<ENDSMP);
+        .value=fileList;
+            self.close();
+        }
+        </script>
+ENDSMP
+    $r->print($java_script);
+    $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;
+    foreach my $line (@dir_list) {
+        my ($filename)=split(/\&/,$line,2);
+        if ($filename eq $fname){
+            $found_file = 1;
+        }
+    }
+    my $current_disk_usage = &Apache::lonnet::diskusage($ENV{'user.domain'}, $ENV{'user.name'},$portfolio_root);
+    if (($current_disk_usage + $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 '.$current_disk_usage.' kilobytes.');
+    } 
+    elsif ($found_file){   
+        $r->print('<font color="red">Unable to upload <strong>'.$fname.'</strong>, a file by that name was found in <strong>'.$ENV{'form.currentpath'}.'</strong></font>'.
+                  '<br />To upload, rename or delete existing '.$fname.' in '.$ENV{'form.currentpath'});
+    } 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 />');
+        }
+    }
+    $r->print(&done());
+}
+
+sub createdir {
+    my ($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 />');
+        }
+    }
+    $r->print(&done());
+}
+
 sub handler {
-	my ($r)=@_;
-	$r->content_type('text/html');
-	$r->send_http_header;
-	return OK if $r->header_only;
-#	my $file=&Apache::lonnet::filelocation("",$r->uri);	
-#	my $contents=&Apache::lonnet::getfile($file);
-#	upload a file if we enter with a filename set
-	$r->print ('<body bgcolor="dogfood">
-		<blockquote>');
-	
-	if ($ENV{'form.uploaddoc.filename'}){
-		$r->print (&Apache::lonnet::userfileupload('uploaddoc',undef,'portfolio').'<br />');	
+    # this handles file management
+    my $r = shift;
+    my $portfolio_root = &Apache::loncommon::propath($ENV{'user.domain'},
+							 $ENV{'user.name'}).
+							'/userfiles/portfolio';
+    &Apache::loncommon::no_cache($r);
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+    # Give the LON-CAPA page header
+    $r->print('<html><head><title>'.
+              &mt('Portfolio Manager').
+              "</title></head>\n".
+              &Apache::loncommon::bodytag('Portfolio Manager'));
+    $r->rflush();
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+                                            ['selectfile','currentpath',
+					     'currentfile','action','fieldname','mode']);
+	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>');
 	}
-	$r->print ('<br />Current contents of your portfolio directory: <br /><hr />');
-	$r->print (&Apache::lonnet::portfoliolist($r->uri, $ENV{'user.domain'}, $ENV{'user.name'}, undef ));
-	$r->print ('<hr />');
-#	$r->print ($ENV{'form.uploaddoc.filename'}.'<br />');
-#	$r->print ($ENV{'form.storeupl'}.'<br />');
-#	$r->print ($ENV{'form.saywhat'}.'<br />');
-
-	$r->print("Upload files to your portfolio<br />");
-	# file upload form 
-	$r->print('<form method="post" enctype="multipart/form-data">');
-	$r->print('<input name="uploaddoc" type="file">'.
-	
-		'<input type="submit" name="storeupl" value="Upload">'
-		);
-	$r->print('</form>
-	</blockquote>
-	</body>');
-	
+    if ($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 ($ENV{'form.action'} eq 'rename') {
+	&rename($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);
+	if ($ENV{"form.mode"} eq 'selectfile'){
+	    &select_files($r);
+            &display_file_select($r,$current_path,$is_empty,\@dir_list);
+	} else {
+	    &display_directory($r,$current_path,$is_empty,\@dir_list);
+	}
+	$r->print("</body>\n</html>\n");
 	return OK;
-
+    }
 }
-
 1;
 __END__