File Source for document.php

<?php // $Id: document.php 15525 2008-06-09 06:24:20Z yannoo $
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2004-2008 Dokeos SPRL
Copyright (c) 2003 Ghent University (UGent)
Copyright (c) 2001 Universite catholique de Louvain (UCL)
Copyright (c) various contributors
For a full list of contributors, see "credits.txt".
The full license can be read in "license.txt".
This program 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.
See the GNU General Public License for more details.
Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
Mail: info@dokeos.com
==============================================================================
*/
/**
==============================================================================
* Main script for the documents tool
*
* This script allows the user to manage files and directories on a remote http server.
*
* The user can : - navigate through files and directories.
* - upload a file
* - delete, copy a file or a directory
* - edit properties & content (name, comments, html content)
*
* The script is organised in four sections.
*
* 1) Execute the command called by the user
* Note: somme commands of this section are organised in two steps.
* The script always begins with the second step,
* so it allows to return more easily to the first step.
*
* Note (March 2004) some editing functions (renaming, commenting)
* are moved to a separate page, edit_document.php. This is also
* where xml and other stuff should be added.
*
* 2) Define the directory to display
*
* 3) Read files and directories from the directory defined in part 2
* 4) Display all of that on an HTML page
*
* @todo eliminate code duplication between
* document/document.php, scormdocument.php
*
* @package dokeos.document
==============================================================================
*/
/*
==============================================================================
INIT SECTION
==============================================================================
*/
// name of the language file that needs to be included
$language_file[] = 'document';
$language_file[] = 'slideshow';
require("../inc/global.inc.php");
$this_section=SECTION_COURSES;
require('document.inc.php');
api_protect_course_script(true);
//session
if(isset($_GET['id_session']))
$_SESSION['id_session'] = $_GET['id_session'];
$htmlHeadXtra[] =
"<script type=\"text/javascript\">
function confirmation (name)
{
if (confirm(\" ". get_lang("AreYouSureToDelete") ." \"+ name + \" ?\"))
{return true;}
else
{return false;}
}
</script>";
/*
-----------------------------------------------------------
Variables
- some need defining before inclusion of libraries
-----------------------------------------------------------
*/
//what's the current path?
//we will verify this a bit further down
if(isset($_GET['curdirpath']) && $_GET['curdirpath']!='')
{
$curdirpath = $_GET['curdirpath'];
}
elseif (isset($_POST['curdirpath']) && $_POST['curdirpath']!='')
{
$curdirpath = $_POST['curdirpath'];
}
else
{
$curdirpath = '/';
}
$curdirpathurl = urlencode($curdirpath);
$course_dir = $_course['path']."/document";
$sys_course_path = api_get_path(SYS_COURSE_PATH);
$base_work_dir = $sys_course_path.$course_dir;
$http_www = api_get_path('WEB_COURSE_PATH').$_course['path'].'/document';
$dbl_click_id = 0; // used to avoid double-click
$is_allowed_to_edit = api_is_allowed_to_edit();
$group_member_with_upload_rights = false;
//if the group id is set, we show them group documents
if(isset($_SESSION['_gid']) && $_SESSION['_gid']!='')
{
//needed for group related stuff
include_once(api_get_path(LIBRARY_PATH) . 'groupmanager.lib.php');
//get group info
$group_properties = GroupManager::get_group_properties($_SESSION['_gid']);
$noPHP_SELF=true;
//let's assume the user cannot upload files for the group
$group_member_with_upload_rights = false;
if($group_properties['doc_state']==2) //documents are private
{
if($is_allowed_to_edit || GroupManager :: is_user_in_group($_user['user_id'],$_SESSION['_gid'])) //only courseadmin or group members (members + tutors) allowed
{
$to_group_id = $_SESSION['_gid'];
$req_gid = '&gidReq='.$_SESSION['_gid'];
$interbreadcrumb[]= array ("url"=>"../group/group.php", "name"=> get_lang('Groups'));
$interbreadcrumb[]= array ("url"=>"../group/group_space.php?gidReq=".$_SESSION['_gid'], "name"=> get_lang('GroupSpace').' ('.$group_properties['name'].')');
//they are allowed to upload
$group_member_with_upload_rights = true;
}
else
{
$to_group_id = 0;
$req_gid = '';
}
}
elseif($group_properties['doc_state']==1) //documents are public
{
$to_group_id = $_SESSION['_gid'];
$req_gid = '&gidReq='.$_SESSION['_gid'];
$interbreadcrumb[]= array ("url"=>"../group/group_space.php?gidReq=".$_SESSION['_gid'], "name"=> get_lang('GroupSpace').' ('.$group_properties['name'].')');
//allowed to upload?
if($is_allowed_to_edit || GroupManager::is_subscribed($_user['user_id'],$_SESSION['_gid'])) //only courseadmin or group members can upload
{
$group_member_with_upload_rights = true;
}
}
else //documents not active for this group
{
$to_group_id = 0;
$req_gid = '';
}
$_SESSION['group_member_with_upload_rights'] = $group_member_with_upload_rights;
}
else
{
$to_group_id = 0;
$req_gid = '';
}
/*
-----------------------------------------------------------
Libraries
-----------------------------------------------------------
*/
//the main_api.lib.php, database.lib.php and display.lib.php
//libraries are included by default
include_once(api_get_path(LIBRARY_PATH) . 'fileDisplay.lib.php');
include_once(api_get_path(LIBRARY_PATH) . 'events.lib.inc.php');
include_once(api_get_path(LIBRARY_PATH) . 'document.lib.php');
include_once(api_get_path(LIBRARY_PATH) . 'tablesort.lib.php');
include_once(api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php');
//-----------------------------------------------------------
//check the path
//if the path is not found (no document id), set the path to /
if(!DocumentManager::get_document_id($_course,$curdirpath))
{
$curdirpath = '/';
//urlencoded version
$curdirpathurl = '%2F';
}
//if they are looking at group documents they can't see the root
if($to_group_id!=0 && $curdirpath=='/')
{
$curdirpath = $group_properties['directory'];
$curdirpathurl = urlencode($group_properties['directory']);
}
//-----------------------------------------------------------
/*
-----------------------------------------------------------
Constants and variables
-----------------------------------------------------------
*/
$course_quota = DocumentManager::get_course_quota();
/*
==============================================================================
MAIN SECTION
==============================================================================
*/
//-------------------------------------------------------------------//
if (isset($_GET['action']) && $_GET['action']=="download")
{
//check if the document is in the database
if(!DocumentManager::get_document_id($_course,$_GET['id']))
{
//file not found!
header('HTTP/1.0 404 Not Found');
$error404 = '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">';
$error404 .= '<html><head>';
$error404 .= '<title>404 Not Found</title>';
$error404 .= '</head><body>';
$error404 .= '<h1>Not Found</h1>';
$error404 .= '<p>The requested URL was not found on this server.</p>';
$error404 .= '<hr>';
$error404 .= '</body></html>';
echo($error404);
exit;
}
// launch event
event_download($_GET['id']);
$doc_url=$_GET['id'];
$full_file_name = $base_work_dir.$doc_url;
DocumentManager::file_send_for_download($full_file_name,true);
exit;
}
//-------------------------------------------------------------------//
//download of an completed folder
if(isset($_GET['action']) && $_GET['action']=="downloadfolder")
{
include('downloadfolder.inc.php');
}
//-------------------------------------------------------------------//
// slideshow inititalisation
$_SESSION['image_files_only']='';
$image_files_only='';
/*
-----------------------------------------------------------
Header
-----------------------------------------------------------
*/
$interbreadcrumb[]= array ('url'=>'#', 'name'=> get_lang('Document'));
//------interbreadcrumb for the current directory root path
$dir_array=explode("/",$curdirpath);
$array_len=count($dir_array);
if ($array_len >1)
{
if(empty($_SESSION['_gid']))
{
$url_dir='document.php?&curdirpath=/';
$interbreadcrumb[]= array ('url'=>$url_dir, 'name'=> get_lang('HomeDirectory'));
}
}
$dir_acum='';
for ($i=0; $i<$array_len;$i++)
{
$url_dir='document.php?&curdirpath='.$dir_acum.$dir_array[$i];
$interbreadcrumb[]= array ('url'=>$url_dir, 'name'=> $dir_array[$i]);
$dir_acum.=$dir_array[$i].'/';
}
Display::display_header('','Doc');
$is_allowed_to_edit = api_is_allowed_to_edit();
/*
* Lib for event log, stats & tracking
* plus record of the access
*/
event_access_tool(TOOL_DOCUMENT);
/*
==============================================================================
DISPLAY
==============================================================================
*/
if($to_group_id !=0) //add group name after for group documents
{
$add_group_to_title = ' ('.$group_properties['name'].')';
}
//api_display_tool_title($tool_name.$add_group_to_title);
/*
-----------------------------------------------------------
Introduction section
(editable by course admins)
-----------------------------------------------------------
*/
if(!empty($_SESSION['_gid']))
{
Display::display_introduction_section(TOOL_DOCUMENT.$_SESSION['_gid']);
}
else
{
Display::display_introduction_section(TOOL_DOCUMENT);
}
/*============================================================================*/
if($is_allowed_to_edit || $group_member_with_upload_rights) // TEACHER ONLY
{
/*======================================
MOVE FILE OR DIRECTORY
======================================*/
if (isset($_GET['move']) && $_GET['move']!='')
{
if(DocumentManager::get_document_id($_course,$_GET['move']))
{
$folders = DocumentManager::get_all_document_folders($_course,$to_group_id,$is_allowed_to_edit || $group_member_with_upload_rights);
Display::display_normal_message(build_move_to_selector($folders,$_GET['curdirpath'],$_GET['move'],$group_properties['directory']),false);
}
}
if (isset($_POST['move_to']) && isset($_POST['move_file']))
{
include_once(api_get_path(LIBRARY_PATH) . 'fileManage.lib.php');
//this is needed for the update_db_info function
//$dbTable = $_course['dbNameGlu']."document";
$dbTable = Database::get_course_table(TABLE_DOCUMENT);
//security fix: make sure they can't move files that are not in the document table
if(DocumentManager::get_document_id($_course,$_POST['move_file']))
{
if ( move($base_work_dir.$_POST['move_file'],$base_work_dir.$_POST['move_to']) )
{
update_db_info("update", $_POST['move_file'], $_POST['move_to']."/".basename($_POST['move_file']));
//set the current path
$curdirpath = $_POST['move_to'];
$curdirpathurl = urlencode($_POST['move_to']);
Display::display_confirmation_message(get_lang('DirMv'));
}
else
{
Display::display_error_message(get_lang('Impossible'));
}
}
else
{
Display::display_error_message(get_lang('Impossible'));
}
}
/*======================================
DELETE FILE OR DIRECTORY
======================================*/
if ( isset($_GET['delete']) )
{
include_once(api_get_path(LIBRARY_PATH) . 'fileManage.lib.php');
if(DocumentManager::delete_document($_course,$_GET['delete'],$base_work_dir))
{
Display::display_confirmation_message(get_lang('DocDeleted'));
}
else
{
Display::display_error_message(get_lang('DocDeleteError'));
}
}
if( isset($_POST['action']))
{
switch($_POST['action'])
{
case 'delete':
foreach($_POST['path'] as $index => $path)
{
DocumentManager::delete_document($_course,$path,$base_work_dir);
}
Display::display_confirmation_message(get_lang('DocDeleted'));
break;
}
}
/*======================================
CREATE DIRECTORY
======================================*/
//create directory with $_POST data
if(isset($_POST['create_dir']) && $_POST['dirname']!='')
{
//needed for directory creation
include_once(api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php');
$post_dir_name=$_POST['dirname'];
if ($post_dir_name=='../' || $post_dir_name=='.' || $post_dir_name=='..')
{
Display::display_error_message(get_lang('CannotCreateDir'));
}
else
{
$added_slash = ($curdirpath=='/')?'':'/';
$dir_name = $curdirpath.$added_slash.replace_dangerous_char($post_dir_name);
$dir_check=$base_work_dir.''.$dir_name;
if(!is_dir($dir_check))
{
$created_dir = create_unexisting_directory($_course,$_user['user_id'],$to_group_id,$to_user_id,$base_work_dir,$dir_name,$post_dir_name);
if($created_dir)
{
Display::display_confirmation_message('<span title="'.$created_dir.'">'.get_lang('DirCr').'</span>',false);
//uncomment if you want to enter the created dir
//$curdirpath = $created_dir;
//$curdirpathurl = urlencode($curdirpath);
}
else
{
Display::display_error_message(get_lang('CannotCreateDir'));
}
}
else
{
Display::display_error_message(get_lang('CannotCreateDir'));
}
}
}
//show them the form for the directory name
if(isset($_GET['createdir']))
{
//create the form that asks for the directory name
$new_folder_text = '<form action="'.api_get_self().'" method="post">';
$new_folder_text .= '<input type="hidden" name="curdirpath" value="'.$curdirpath.'" />';
$new_folder_text .= get_lang('NewDir') .' ';
$new_folder_text .= '<input type="text" name="dirname" />';
$new_folder_text .= '<input type="submit" name="create_dir" value="'.get_lang('Ok').'" />';
$new_folder_text .= '</form>';
//show the form
Display::display_normal_message($new_folder_text,false);
}
/*======================================
VISIBILITY COMMANDS
======================================*/
if ((isset($_GET['set_invisible']) && !empty($_GET['set_invisible'])) || (isset($_GET['set_visible']) && !empty($_GET['set_visible'])) AND $_GET['set_visible']<>'*' AND $_GET['set_invisible']<>'*')
{
//make visible or invisible?
if(isset($_GET['set_visible']))
{
$update_id = $_GET['set_visible'];
$visibility_command = 'visible';
}
else
{
$update_id = $_GET['set_invisible'];
$visibility_command = 'invisible';
}
//update item_property to change visibility
if(api_item_property_update($_course, TOOL_DOCUMENT, $update_id, $visibility_command, $_user['user_id']))
{
Display::display_confirmation_message(get_lang("ViMod"));
}
else
{
Display::display_error_message(get_lang("ViModProb"));
}
}
/*======================================
TEMPLATE ACTION
======================================*/
if(isset($_GET['add_as_template']) && !isset($_POST['create_template'])){
$document_id_for_template = intval($_GET['add_as_template']);
//create the form that asks for the directory name
$new_folder_text = '<form name="set_document_as_new_template" action="'.api_get_self().'?add_as_template='.$document_id_for_template.'" method="post">';
$new_folder_text .= '<input type="hidden" name="curdirpath" value="'.$curdirpath.'" />';
$new_folder_text .= '<table><tr><td>';
$new_folder_text .= get_lang('TemplateName').' : </td>';
$new_folder_text .= '<td><input type="text" name="template_title" /></td></tr>';
$new_folder_text .= '<tr><td>'.get_lang('TemplateDescription').' : </td>';
$new_folder_text .= '<td><textarea name="template_description"></textarea></td></tr></table>';
$new_folder_text .= '<input type="submit" name="create_template" value="'.get_lang('Ok').'" />';
$new_folder_text .= '</form>';
//show the form
Display::display_normal_message($new_folder_text,false);
}
elseif(isset($_GET['add_as_template']) && isset($_POST['create_template']))
{
$document_id_for_template = intval(Database::escape_string($_GET['add_as_template']));
$title=Security::remove_XSS($_POST['template_title']);
$description = Security::remove_XSS($_POST['template_description']);
$course_code = api_get_course_id();
$user_id = api_get_user_id();
if(!is_file(api_get_path(SYS_CODE_PATH).'upload/template_thumbnails/')){
mkdir(api_get_path(SYS_CODE_PATH).'upload/template_thumbnails/',0777);
}
DocumentManager::set_document_as_template($title, $description, $document_id_for_template, $course_code, $user_id);
Display::display_confirmation_message(get_lang('DocumentSetAsTemplate'));
}
if(isset($_GET['remove_as_template'])){
$document_id_for_template = intval($_GET['remove_as_template']);
$course_code = api_get_course_id();
$user_id = api_get_user_id();
DocumentManager::unset_document_as_template($document_id_for_template, $course_code, $user_id);
Display::display_confirmation_message(get_lang('DocumentUnsetAsTemplate'));
}
} // END is allowed to edit
/*
-----------------------------------------------------------
GET ALL DOCUMENT DATA FOR CURDIRPATH
-----------------------------------------------------------
*/
$docs_and_folders = DocumentManager::get_all_document_data($_course,$curdirpath,$to_group_id,NULL,$is_allowed_to_edit || $group_member_with_upload_rights);
?>
<div id="folderselector" style="float:left;margin-right:10px;margin-top:5px;">
<?php
$folders = DocumentManager::get_all_document_folders($_course,$to_group_id,$is_allowed_to_edit || $group_member_with_upload_rights);
if($folders===false)
{
$folders = array();
}
echo(build_directory_selector($folders,$curdirpath,(isset($group_properties['directory'])?$group_properties['directory']:array()),true));
?>
</div>
<?php
echo '<div id="doc_links">';
/* GO TO PARENT DIRECTORY */
if ($curdirpath!= '/'&& $curdirpath!=$group_properties['directory'])
{
?>
<a href="<?php echo api_get_self(); ?>?<?php echo api_get_cidreq();?>&curdirpath=<?php echo urlencode((dirname($curdirpath)=='\\')?'/':dirname($curdirpath)).$req_gid ?>">
<img src="../img/folder_up.gif" border="0" align="absbottom" hspace="5" alt="" />
<?php echo get_lang('Up'); ?></a> 
<?php
}
if ($is_allowed_to_edit || $group_member_with_upload_rights)
{
/* CREATE NEW DOCUMENT OR NEW DIRECTORY / GO TO UPLOAD / DOWNLOAD ZIPPED FOLDER */
?>
<a href="create_document.php?<?php echo api_get_cidreq();?>&dir=<?php echo $curdirpathurl.$req_gid; ?>"><img src="../img/filenew.gif" border="0" alt="" title="<?php echo get_lang('CreateDoc'); ?>" /></a>
<a href="create_document.php?<?php echo api_get_cidreq();?>&dir=<?php echo $curdirpathurl.$req_gid; ?>"><?php echo get_lang("CreateDoc"); ?></a>  
<a href="upload.php?<?php echo api_get_cidreq();?>&path=<?php echo $curdirpathurl.$req_gid; ?>"><img src="../img/submit_file.gif" border="0" title="<?php echo get_lang('UplUploadDocument'); ?>" alt="" /></a>
<a href="upload.php?<?php echo api_get_cidreq();?>&path=<?php echo $curdirpathurl.$req_gid; ?>"><?php echo get_lang('UplUploadDocument'); ?></a> 
<a href="<?php echo api_get_self(); ?>?<?php echo api_get_cidreq();?>&curdirpath=<?php echo $curdirpathurl.$req_gid; ?>&createdir=1"><img src="../img/folder_new.gif" border="0" alt ="" /></a>
<a href="<?php echo api_get_self(); ?>?<?php echo api_get_cidreq();?>&curdirpath=<?php echo $curdirpathurl.$req_gid; ?>&createdir=1"><?php echo get_lang("CreateDir"); ?></a> 
<?php
}
?>
<a href="<?php echo api_get_self(); ?>?<?php echo api_get_cidreq();?>&action=downloadfolder&path=<?php echo $curdirpathurl.$req_gid; ?>"><img src="../img/zip_save.gif" border="0" title="<?php echo get_lang("Save"); ?> (ZIP)" alt="" /></a>
<a href="<?php echo api_get_self(); ?>?<?php echo api_get_cidreq();?>&action=downloadfolder&path=<?php echo $curdirpathurl.$req_gid; ?>"><?php echo get_lang("Save"); ?> (ZIP)</a> 
<?php
// Slideshow by Patrick Cool, May 2004
include("document_slideshow.inc.php");
if ($image_present)
{
echo "<a href=\"slideshow.php?".api_get_cidreq()."&curdirpath=".$curdirpathurl."\"><img src=\"../img/images_gallery.gif\" border=\"0\" title=\"".get_lang('ViewSlideshow')."\"/> ". get_lang('ViewSlideshow') . "</a>";
}
echo "</div>";
//==============================================================================
if(isset($docs_and_folders) && is_array($docs_and_folders))
{
//echo('<pre>');
//print_r($docs_and_folders);
//echo('</pre>');
//*************************************************************************************************
//do we need the title field for the document name or not?
//we get the setting here, so we only have to do it once
$use_document_title = get_setting('use_document_title');
//create a sortable table with our data
$sortable_data = array();
while (list ($key, $id) = each($docs_and_folders))
{
$row = array ();
//if the item is invisible, wrap it in a span with class invisible
$invisibility_span_open = ($id['visibility']==0)?'<span class="invisible">':'';
$invisibility_span_close = ($id['visibility']==0)?'</span>':'';
//size (or total size of a directory)
$size = $id['filetype']=='folder' ? get_total_folder_size($id['path'],$is_allowed_to_edit) : $id['size'];
//get the title or the basename depending on what we're using
if ($use_document_title=='true' AND $id['title']<>'')
{
$document_name=$id['title'];
}
else
{
$document_name=basename($id['path']);
}
//data for checkbox
if (($is_allowed_to_edit || $group_member_with_upload_rights) AND count($docs_and_folders)>1)
{
$row[] = $id['path'];
}
//icons
$row[]= build_document_icon_tag($id['filetype'],$id['path']);
//document title with hyperlink
$row[] = create_document_link($http_www,$document_name,$id['path'],$id['filetype'],$size,$id['visibility']).'<br />'.$invisibility_span_open.nl2br(htmlspecialchars($id['comment'],ENT_QUOTES,$charset)).$invisibility_span_close;
//comments => display comment under the document name
//$row[] = $invisibility_span_open.nl2br(htmlspecialchars($id['comment'])).$invisibility_span_close;
$display_size = format_file_size($size);
$row[] = '<span style="display:none;">'.$size.'</span>'.$invisibility_span_open.$display_size.$invisibility_span_close;
//last edit date
$last_edit_date=$id['lastedit_date'];
$display_date = date_to_str_ago($last_edit_date).'<br><span class="dropbox_date">'.$last_edit_date.'</span>';
$row[] = $invisibility_span_open.$display_date.$invisibility_span_close;
//admins get an edit column
if ($is_allowed_to_edit || $group_member_with_upload_rights)
{
$is_template = (isset($id['is_template'])?$id['is_template']:false);
// if readonly, check if it the owner of the file or if the user is an admin
if ($id['insert_user_id'] == $_user['user_id'] || api_is_platform_admin())
{
$edit_icons = build_edit_icons($curdirpath,$id['filetype'],$id['path'],$id['visibility'],$key, $is_template,0);
}
else
{
$edit_icons = build_edit_icons($curdirpath,$id['filetype'],$id['path'],$id['visibility'],$key, $is_template,$id['readonly']);
}
$row[] = $edit_icons;
}
$row[]=$last_edit_date;
$sortable_data[] = $row;
}
//*******************************************************************************************
}
else
{
$sortable_data='';
$table_footer='<div style="text-align:center;"><strong>'.get_lang('NoDocsInFolder').'</strong></div>';
}
$column_show=array();
if (($is_allowed_to_edit || $group_member_with_upload_rights) AND count($docs_and_folders)>1)
{
$column_show[]=1;
}
$column_show[]=1;
$column_show[]=1;
$column_show[]=1;
$column_show[]=1;
if ($is_allowed_to_edit || $group_member_with_upload_rights)
{
$column_show[]=1;
}
$column_show[]=0;
$column_order=array();
if (count($row)==7)
{
$column_order[]=1;
$column_order[]=2;
$column_order[]=3;
$column_order[]=6;
$column_order[]=5;
}
if (count($row)==5)
{
$column_order[]=1;
$column_order[]=2;
$column_order[]=4;
$column_order[]=4;
}
$table = new SortableTableFromArrayConfig($sortable_data,2,20,'tablename',$column_show,$column_order,'ASC');
$query_vars['curdirpath'] = $curdirpath;
if(isset($_SESSION['_gid']))
{
$query_vars['gidReq'] = $_SESSION['_gid'];
}
$query_vars['cidReq'] = api_get_course_id();
$table->set_additional_parameters($query_vars);
$column = 0;
if (($is_allowed_to_edit || $group_member_with_upload_rights) AND count($docs_and_folders)>1)
{
$table->set_header($column++,'',false);
}
$table->set_header($column++,get_lang('Type'));
$table->set_header($column++,get_lang('Name'));
//$column_header[] = array(get_lang('Comment'),true); => display comment under the document name
$table->set_header($column++,get_lang('Size'));
$table->set_header($column++,get_lang('Date'));
//admins get an edit column
if ($is_allowed_to_edit || $group_member_with_upload_rights)
{
$table->set_header($column++,'',false);
}
//actions on multiple selected documents
//currently only delete action -> take only DELETE right into account
if (count($docs_and_folders)>1)
{
if ($is_allowed_to_edit || $group_member_with_upload_rights)
{
$form_actions = array();
$form_action['delete'] = get_lang('Delete');
$table->set_form_actions($form_action,'path');
}
}
$table->display();
if(!empty($table_footer))
{
echo $table_footer;
}
/*
==============================================================================
Quota section
Proposal: perhaps move/add the quota display to another section, e.g. course info
==============================================================================
*/
if ($is_allowed_to_edit) display_document_options();
/*
==============================================================================
Footer
==============================================================================
*/
Display::display_footer();
?>

Source for file document.php