--- loncom/interface/portfolio.pm	2004/08/24 05:01:42	1.23
+++ loncom/interface/portfolio.pm	2004/09/10 20:14:45	1.43
@@ -38,240 +38,28 @@ sub make_anchor {
     return $anchor;
 }
 
-# returns html with <br /> separated contents of the directory
-# returns a <strong>currentFile</strong> (bolds the selected file/dir)
+my $dirptr=16384;
 sub display_directory {
-    my ($currentPath, $currentFile, @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 = $displayOut.'<a href="/adm/portfolio?selectfile='.$upPath.'&currentpath='.$upPath.'">..</a><br />';
-    } else {
-        # $displayOut = $displayOut.'at root '.$currentPath.'<br />';
-    }
-    foreach my $line (@dirList) {
-    	#$strip holds directory/file name
-    	#$dom 
-    	my ($filename,$dom,undef,$testdir,undef,undef,undef,undef,undef,undef,undef,undef,undef,undef,$obs,undef)=split(/\&/,$line,16); 
-        if (($filename ne '.') && ($filename ne '..')) {
-            if ($testdir =~ m:^1:) {
-                # handle directories different from files
-                if ($filename eq $currentFile) {
-		    #checks to bold the selected file
-                    $displayOut.= '<strong>'.(&make_anchor($filename.'/', $filename.'/').'</strong><br />'."\n");
-                } else {
-                    $displayOut.= (&make_anchor($filename.'/', $filename.'/').'<br />'."\n");
-                }
-            } else {
-                if ($filename eq $currentFile) {
-		    #checks to bold the selected file
-                    $displayOut.='<strong>'.(&make_anchor($filename, $currentPath).'</strong><br />'."\n");
-                } else {
-                    $displayOut.=(&make_anchor($filename, $currentPath).'<br />'."\n");
-                }
-            }
-            
-        }
-    	
-    }
-    return $displayOut;
-}
-
-sub displayActions {
-    # returns html to offer user appropriate actions depending on selected file/directory
-    my $displayOut;
-    my ($currentPath, $currentFile, $isEmpty) = @_;
-#   $displayOut = 'here are actions for '.$currentFile;
-    if ($currentFile =~ m:/$:) {
-        # if the selected file is a directory, these are the options
-        # offer the chance to delete the directory only if it is empty
-        if ($isEmpty && ($currentPath ne '/')) {
-            $displayOut =   $displayOut.'<form method="POST">
-            <input type="hidden" name="selectfile" 
-            value="'.$currentFile.'" />
-            <input type="hidden" name="fileaction" value="delete" /> 
-            <input type="hidden" name="currentpath" value="'.$currentPath.'" /> 
-            <center>
-            <input type="submit" 
-            value="Delete '.$currentFile.'" />
-            </center>
-            </form>';
-        } 
-        if ($currentPath ne '/') {
-            $displayOut = $displayOut.'<hr />
-            <form method="POST">
-            <input type="hidden" name="selectfile" 
-            value="'.$currentFile.'" />
-            <input type="hidden" name="fileaction" value="rename" /> 
-            <input type="hidden" name="currentpath" value="'.$currentPath.'" /> 
-            <input type="input" name="filenewname" value="Type new name here" /> 
-            <input type="submit" 
-            value="Rename '.$currentFile.'" />
-            </form>';
-        }
-    } else {  #action options offered for files
-        $displayOut = $displayOut.'<form method="POST">';
-        $displayOut = $displayOut.'<input type="hidden" name="selectfile"';
-        $displayOut = $displayOut.'value="'.$currentFile;
-        $displayOut = $displayOut.'" /><input type="hidden" name="fileaction" value="delete" /> 
-        <input type="hidden" name="currentpath" value="'.$currentPath.'" /> 
-        <center>
-        <input type="submit"
-        value="Delete '.$currentFile.'" />
-        </center>
-        </form>';
-    
-        $displayOut = $displayOut.'<hr />
-        <form method="POST">
-        <input type="hidden" name="selectfile" 
-        value="'.$currentFile.'" />
-        <input type="hidden" name="fileaction" value="rename" /> 
-        <input type="hidden" name="currentpath" value="'.$currentPath.'" /> 
-        <input type="input" name="filenewname" value="Type new name here" /> 
-        <input type="submit" 
-        value="Rename '.$currentFile.'" />
-        </form>
-        <hr />';
-    }
-    $displayOut = $displayOut.'<hr />Add a file to '.$currentPath;
-    # 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 handler {
-    # this handles file management
-    my $r = shift;
+    my ($r,$current_path,$is_empty,$dir_list)=@_;
     my $iconpath= $r->dir_config('lonIconsURL') . "/";
-    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 $isEmpty;
-    my $dirptr=16384;
-    &Apache::loncommon::no_cache($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']);
-    # 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'}) {
-        # have to check if the selected file is a subdirectory
-        if ($ENV{'form.selectfile'} =~ /-\(Dir\)/) {
-            # $currentPath =~ /\-\(Dir\)/;
-            $currentPath = $`.'/';
-            $r->print('<br />'.$currentPath.'<br />');
-        }
-        $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') {
-            $r->print('<br />trying to delete '.$currentPath.$ENV{'form.selectfile'}.'<br />');
-            $r->print(&Apache::lonnet::removeuserfile($ENV{'user.name'}, $ENV{'user.domain'},'portfolio'.$currentPath.$ENV{'form.selectfile'}));
-            $currentFile = '';
-        } elsif ($ENV{'form.fileaction'} eq 'rename') {
-            &Apache::lonnet::portfoliomanage($currentPath.$ENV{'form.selectfile'}, 'rename', $currentPath.$ENV{'form.filenewname'} );
-        }
-    }
-    # we always need $dirList, plus this will return information about the current file
-    # as well as information about the home server directory structure, specifically
-    # the path to the users userfiles directory.    
-    # 
-    my $portfolio_root = &Apache::loncommon::propath($ENV{'user.domain'},
-						     $ENV{'user.name'}).
-						       '/userfiles/portfolio';
-    @dirList = &Apache::lonnet::dirlist($currentPath,  $ENV{'user.domain'}, $ENV{'user.name'}, $portfolio_root);
-    
-    if (@dirList == 2) { # need to know if directory is empty so it can be removed if desired
-        $isEmpty = 1;
-    } else {
-        $isEmpty = 0;
-    }
-   
-    if ($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'});
-        } else {
-	    # Remember user's file selection for later
-	    $ENV{'portfolio.file'} = $ENV{'form.selectfile'};
-	    # offer things user can do with selected file
-        }
-    } else {
-        unless ($ENV{'portfolio.file'}){
-            $ENV{'portfolio.file'} = 'No File Selected';
-        }
-    }
-    ##############################
-    #
-    # Display begins here
-    #
-    ##############################
     $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 = $displayOut.'<input name="uploaddoc" type="file" />'.
-        '<input type="hidden" name="currentpath" value="'.$currentPath.'" />'.
+        '<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">');
-    my $displayOut = '<form method="post">';
-    $displayOut = $displayOut.'<input name="newdir" type="input" />'.
-        '<input type="hidden" name="currentpath" value="'.$currentPath.'" />'.
+    $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);
     $r->print('</td></tr></table>');
-    my @tree = split (/\//,$currentPath);
-    $r->print('<font size="+2">'.&make_anchor('/','/'));
+    my @tree = split (/\//,$current_path);
+    $r->print('<font size="+2">'.&make_anchor('portfolio','/').'/');
     if (@tree > 1){
         my $newCurrentPath = '';
         for (my $i = 1; $i< @tree; $i++){
@@ -280,15 +68,32 @@ sub handler {
         }
     }
     $r->print('</font>');
-    &Apache::lonhtmlcommon::store_recent('portfolio',$currentPath,$currentPath);
+    &Apache::lonhtmlcommon::store_recent('portfolio',$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) {
+        $displayOut = '<form method="post" action="/adm/portfolio">'.
+        '<input type="hidden" name="action" value="deletedir" />'.
+        '<input type="submit" name="deletedir" value="'.&mt("Delete Directory").'" />'.
+        '<input type="hidden" name="selectfile" value="" />'.
+        '<input type="hidden" name="currentpath" value="'.$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'}/$ENV{'user.name'}/portfolio/$currentPath/";
-    foreach my $line (@dirList) {
+    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(/\&/,$line,16); 
@@ -296,21 +101,25 @@ sub handler {
             if ($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.'/',$currentPath.$filename.'/').'</td>'); 
+                $r->print('<td>'.&make_anchor($filename.'/',$current_path.$filename.'/').'</td>'); 
                 $r->print('</tr>'); 
             } else {
                 $r->print('<tr bgcolor="#CCCCFF">');
                 $r->print('<td>
-<select name="action">
-  <option value=""></option>
-  <option value="delete">'.&mt("Delete").'</option>
-  <option value="rename">'.&mt("Rename").'</option>
-</select>
-<input type="submit" name="doit" value="Go" />
-</td>');
+                    <form method="post" action="/adm/portfolio">
+                    <select name="action">
+                        <option value=""></option>
+                        <option value="delete">'.&mt("Delete").'</option>
+                        <option value="rename">'.&mt("Rename").'</option>
+                    </select>
+                    <input type="submit" name="doit" value="Go" />
+                    <input type="hidden" name="selectfile" value="'.$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>'); 
+			    $filename.'</a></td>'); 
                 $r->print('<td>'.$size.'</td>');
                 $r->print('<td>'.&Apache::lonlocal::locallocaltime($mtime).'</td>');
                 $r->print('</tr>'); 
@@ -319,15 +128,280 @@ sub handler {
     }
 #   <tr bgcolor="#FFAA99"> pink bg 
 #   <tr bgcolor="#CCCCFF"> blue bg            
-#   $r->print(&display_directory($currentPath, $currentFile, @dirList));
+#   $r->print(&display_directory($current_path, $currentFile, @dir_list));
 #    $r->print('</td>><td>');
-#   $r->print(&display_actions($currentPath, $currentFile, $isEmpty));
+#   $r->print(&display_actions($current_path, $currentFile, $isEmpty));
     $r->print('</table></form>');
-    $r->print('</blockquote>');
-    $r->print("</body>\n</html>\n");
-    $r->rflush();
-    return OK;
 }
 
+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 {
+        # 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)=@_;
+    &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 />');
+    }
+    $r->print(&done());
+}
+
+sub upload {
+    my ($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 = 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']);
+	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.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 $is_empty=(@dir_list == 2);
+	&display_directory($r,$current_path,$is_empty,\@dir_list);
+	$r->print("</body>\n</html>\n");
+	return OK;
+    }
+}
 1;
 __END__