--- loncom/interface/portfolio.pm	2004/06/28 16:07:47	1.8
+++ loncom/interface/portfolio.pm	2004/09/10 20:48:33	1.45
@@ -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);
@@ -33,228 +30,378 @@ use Apache::lontexconvert;
 use Apache::lonfeedback;
 use Apache::lonlocal;
 
-# receives a file name assumed to reside in username/userfiles/portfolio/
-# returns a form consisting of a single submit button labeled with the filename
-sub makeAnchor {
-    my ($fileName, $currentPath) = @_;
-    my $anchor = '<a href="/adm/portfolio?selectfile='.$fileName.'&currentpath='.$currentPath.'">'.$fileName.'</a>';
-#    my $button = '
-#		<form method="POST" action="/adm/portfolio">
-#		<input type="hidden" name="selectfile" value="'.$fileName.'">
-#		<input type="submit" value="'.$fileName.'" name="storeupl">
-#		</form>
-#		';
+# receives a file name and path stub from username/userfiles/portfolio/
+# returns an anchor tag consisting encoding filename and currentpath
+sub make_anchor {
+    my ($filename, $current_path) = @_;
+    my $anchor = '<a href="/adm/portfolio?selectfile='.$filename.'&currentpath='.$current_path.'">'.$filename.'</a>';
     return $anchor;
 }
 
-# returns html with <br /> separated contents of the directory
-# returns a <strong>currentFile</strong> (bolds the selected file/dir)
-sub displayDirectory {
-    my ($currentPath, $currentFile, $isDir, @dirList,) = @_;
-    my $displayOut='';	
-    my $fileName;
-    my $upPath;
-    if ($currentPath ne '/') {
-	$displayOut = 'Listing of '.$currentPath.'<br /><hr />'.
-	    # provides the "up one directory level" function
-	    # it means shortening the currentpath to the parent directory
-	    $currentPath =~ m:(^/.*)(/.*/$ ):;
-	if ($1 ne '/') {
-	    $upPath = $1.'/';
-	} else {
-	    $upPath = $1;
-	}
-		
-	$displayOut = $displayOut.'<a href="/adm/portfolio?selectfile=updir&currentpath='.$upPath.'">..</a><br />';
+my $dirptr=16384;
+sub display_directory {
+    my ($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 = $displayOut.'<input name="uploaddoc" type="file" />'.
+        '<input type="hidden" name="currentpath" value="'.$current_path.'" />'.
+        '<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="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','/').'/');
+    if (@tree > 1){
+        my $newCurrentPath = '';
+        for (my $i = 1; $i< @tree; $i++){
+            $newCurrentPath .= $tree[$i].'/';
+            $r->print(&make_anchor($tree[$i],'/'.$newCurrentPath).'/');
+        }
+    }
+    $r->print('</font>');
+    &Apache::lonhtmlcommon::store_recent('portfolio',$current_path,$current_path);
+    #Fixme -- remove from recent those paths that are deleted
+    $r->print('<br /><form method=post action="/adm/portfolio">'.
+	      &Apache::lonhtmlcommon::select_recent('portfolio','currentpath',
+						    'this.form.submit();'));
+    $r->print("</form>");
+    if ($is_empty && ($current_path ne '/')) {
+        $displayOut = '<form method="post" action="/adm/portfolio">'.
+        '<input type="hidden" name="action" value="deletedir" />'.
+        '<input type="submit" name="deletedir" value="'.&mt("Delete Directory").'" />'.
+        '<input type="hidden" name="selectfile" value="" />'.
+        '<input type="hidden" name="currentpath" value="'.$current_path.'" />'.
+        '</form>';
+        
+        $r->print($displayOut);
+	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.'/').'</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));
+    $r->print('</table></form>');
+}
+
+sub open_form {
+    my ($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='.
+	    $ENV{'form.currentpath'}.'">'.&mt('Done').'</a></h3>');
+}
+
+sub delete {
+    my ($r)=@_;
+    &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 {
-	$displayOut = $displayOut.'at root '.$currentPath.'<br />';
+        # 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'} = $directory_name;
     }
-    while ($fileName = shift @dirList) {
-	if (($fileName ne './') && ($fileName ne '../')) {
-	    if ($fileName =~ m:/$:) {
-		# handle directories different from files
-		if ($fileName eq $currentFile) {
-		    #checks to bold the selected file
-		    $displayOut = $displayOut.'<strong>'.(&makeAnchor($fileName, $currentPath.$fileName).'</strong><br />');
-		} else {
-		    $displayOut = $displayOut.(&makeAnchor($fileName, $currentPath.$fileName).'<br />');
-		}
-	    } else {
-		if ($fileName eq $currentFile) {
-		    #checks to bold the selected file
-		    $displayOut = $displayOut.'<strong>'.(&makeAnchor($fileName, $currentPath).'</strong><br />');
-		} else {
-		    $displayOut = $displayOut.(&makeAnchor($fileName, $currentPath).'<br />');
-		}
-	    }
-	}
+    $r->print(&done());
+}
+
+sub rename {
+    my ($r)=@_;
+    &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'}.$ENV{'form.filenewname'});
+    if ($result ne 'ok') {
+	$r->print('<font color="red"> An errror occured ('.$result.
+		  ') while trying to rename '.&display_file().' to '.
+		  &display_file(undef,$filenewname).'</font><br />');
     }
-    #$displayOut = $displayOut.
-    return $displayOut;
+    $r->print(&done());
 }
 
-# returns html to offer user appropriate actions depending on selected
-# file/directory
-sub displayActions {
-    my $displayOut;
-    my ($currentPath, $currentFile, $isDir, $isFile) = @_;
-#   $displayOut = 'here are actions for '.$currentFile;
-    if ($isDir){
-	$displayOut = 'Directory';
-    }
-    if ($isFile){
-	$displayOut = 'File';
-    }
-    
-    $displayOut = $displayOut.'<form method="POST">
-			<input type="hidden" name="selectfile" 
-			value="'.$currentFile.'">
-			<input type="hidden" name="fileaction" value="delete"> 
-			<center>
-			<input type="submit" 
-			
-			value="Delete '.$currentFile.'">
-			</center>
-			</form>
-			<hr />
-			<form method="POST">
-			<input type="hidden" name="selectfile" 
-			value="'.$currentFile.'">
-			<input type="hidden" name="fileaction" value="rename"> 
-			<input type="input" name="filenewname" value="Type new name here"> 
-			<input type="submit" 
-			value="Rename '.$currentFile.'">
-			</form>
-			<hr>';
-    $displayOut = $displayOut.'<hr>Add a file to your portfolio';
-    # file upload form 
-    $displayOut = $displayOut.'<form method="post" enctype="multipart/form-data">';
-    $displayOut = $displayOut.'<input name="uploaddoc" type="file">'.
-	'<input type="hidden" name="currentpath" value="'.$currentPath.'">'.
-	'<input type="submit" name="storeupl" value="Upload">'.
-	'</form><hr>';
-    $displayOut = $displayOut.'<form method="POST">
-		<input name="subdir" type="text" >
-		<input type="submit" value="Create Subdirectory">
-		</form>
-			';
-    return $displayOut;
+sub upload {
+    my ($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 {
     # this handles file management
-    my ($r)=@_;
-    my @dirList; # will hold directory listing as array
-    my $udir; # returned from home server
-    my $currentPath; # path assuming /userfiles/portfolio/ as root
-    my $currentFile; # directory or file contained in $pathToRoot.$currentPath
-    my $action; # delete, rename, makedirectory, removedirectory,
-    my $filenewname; # for rename action (guess what we do with it!)
-    my $isFile;
-    my $isDir;
-    # send header
-    $r->content_type('text/html');
+    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>'.
-              'Portfolio Management'.
-              "</title></head>\n");
-
-    $r->print('
-	<body bgcolor="dogfood">
-	<blockquote>');
-    #grab stuff that was sent
+              &mt('Portfolio Manager').
+              "</title></head>\n".
+              &Apache::loncommon::bodytag('Portfolio Manager'));
+    $r->rflush();
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                             ['selectfile','currentpath',
 					     'currentfile']);
-    $r->print ('<br />CP= '.$ENV{'form.currentpath'}.'<br />');
-    # currentPath and currentFile need to be set for the rest of things to happen
-    # sometimes, currentFile will be passed by a form field, selectedfile
-    # if there is no 'form.selectedfile' then the current directory is 
-    # considered as selected 
-    if ($ENV{'form.currentpath'}) {
-	$currentPath = $ENV{'form.currentpath'};
-    } else {
-	$currentPath = '/';
-    }
-    if ($ENV{'form.selectfile'}) {
-	$r->print('<br />found selectfile'.$ENV{'form.selectfile'} .'<br />');
-	# have to check if the selected file is a subdirectory
-	if ($ENV{'form.selectfile'} =~ /-\(Dir\)/) {
-	    # $currentPath =~ /\-\(Dir\)/;
-	    $currentPath = $`.'/';
-	    $r->print('<br />'.$currentPath.'<br />');
+	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>');
 	}
-	$currentFile = $ENV{'form.selectfile'};
-    } else {
-	$currentFile = '';
-    }
-    # if we're uploading a file, we need to do it early so it will show in the directory list
     if ($ENV{'form.uploaddoc.filename'}) {
-	$r->print($ENV{'form.storeupl'}.'<br />');
-	$r->print(&Apache::lonnet::userfileupload('uploaddoc','','portfolio'.$currentPath).'<br />');	
-    }
-    # similarly, we need to delete or rename files before getting directory list
-    if ($ENV{'form.selectfile'}) {
-	if ($ENV{'form.fileaction'} eq 'delete') {
-	    &Apache::lonnet::portfoliomanage($ENV{'form.selectfile'}, 'delete', undef );
-	    $currentFile = '';
-	} elsif($ENV{'form.fileaction'} eq 'rename') {
-	    &Apache::lonnet::portfoliomanage($ENV{'form.selectfile'}, 'rename', $ENV{'form.filenewname'} );
-	    # $r->print('We will rename your file');
-	}
-    }
-    # we always need $dirList, plus this will return information about the current file
-    # as well as information about he home server directory structure, specifically
-    # the path to the users userfiles directory.	
-    @dirList = split /<br\s\/>/, (&Apache::lonnet::portfoliolist($currentPath, $currentFile));
-    # portfoliolist returns isdir, isfile and udir as the final array elements
-    # we'll pop them off the bottom of the array, and put them where they belong
-    
-    # $londcall added to help debug
-    my $londcall = pop(@dirList);
-    $r->print('<br />udir '.$londcall.'<br />');
-    $udir = pop(@dirList);
-    $r->print('<br />path returned '.$udir.'<br />');
-    $isFile = pop(@dirList);
-#   $r->print('<br />isfile '.$isFile.'<br />');
-    $isDir = pop(@dirList);
-#   $r->print('<br />isdir '.$isDir.'<br />');
-#   return OK if $r->header_only;
-    # Stuff to maintain proper setting for selected file
-    if ($ENV{'form.selectfile'}) {
-	if ($ENV{'form.fileaction'} eq 'delete') {
-	    &Apache::lonnet::portfoliomanage($ENV{'form.selectfile'}, 'delete', undef );
-	    $ENV{'portfolio.file'} = 'Selected File Deleted';
-	} elsif($ENV{'form.fileaction'} eq 'rename') {
-	    &Apache::lonnet::portfoliomanage($ENV{'form.selectfile'}, 'rename', $ENV{'form.filenewname'} );
-#			$r->print('We will rename your file');
-	} else {
-	    
-	    # Remember user's file selection for later
-	    $ENV{'portfolio.file'} = $ENV{'form.selectfile'};
-	    # offer things user can do with selected file
-	}
+	&upload($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 {
-	unless ($ENV{'portfolio.file'}) {
-	    $ENV{'portfolio.file'} = 'No File Selected';
+	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 $is_empty=(@dir_list == 2);
+	    &display_directory($r,$current_path,$is_empty,\@dir_list);
+	    $r->print("</body>\n</html>\n");
+	    return OK;
     }
-    ##############################
-    #
-    # Display begins here
-    #
-    ##############################
-    $r->print('<hr /> start ');
-    $r->print($udir);
-    $r->print('<table border=1><tr><td>');
-    $r->print(&displayDirectory($currentPath, $currentFile, $isDir, @dirList));
-    $r->print('</td>><td>');
-    $r->print(&displayActions($currentPath, $currentFile, $isDir, $isFile));
-    $r->print('</td>></tr></table>');
-    $r->print('<br />end display<br /><hr />');
-    $r->print('</blockquote></body>');
-    return OK;
 }
-
 1;
 __END__