<?php
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2006 Dokeos S.A.
Copyright (c) 2006 Ghent University (UGent)
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, 44 rue des palais, B-1030 Brussels, Belgium
Mail: info@dokeos.com
==============================================================================
*/
/**
* These files are a complete rework of the forum. The database structure is
* based on phpBB but all the code is rewritten. A lot of new functionalities
* are added:
* - forum categories and forums can be sorted up or down, locked or made invisible
* - consistent and integrated forum administration
* - forum options: are students allowed to edit their post?
* moderation of posts (approval)
* reply only forums (students cannot create new threads)
* multiple forums per group
* - sticky messages
* - new view option: nested view
* - quoting a message
*
* @Author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @Copyright Ghent University
* @Copyright Patrick Cool
*
* @package dokeos.forum
*/
/**
**************************************************************************
* IMPORTANT NOTICE
* Please do not change anything is this code yet because there are still
* some significant code that need to happen and I do not have the time to
* merge files and test it all over again. So for the moment, please do not
* touch the code
* -- Patrick Cool < patrick.cool @ UGent . be >
**************************************************************************
*/
$rows=get_posts($_GET['thread']); // note: this has to be cleaned first
$rows=calculate_children($rows);
if ($_GET['post'])
{
$display_post_id=$_GET['post']; // note: this has to be cleaned first
}
else
{
// we need to display the first post
reset($rows);
$current=current($rows);
$display_post_id=$current['post_id'];
}
// the style depends on the status of the message: approved or not
if ($rows[$display_post_id]['visible']=='0')
{
$titleclass='forum_message_post_title_2_be_approved';
$messageclass='forum_message_post_text_2_be_approved';
$leftclass='forum_message_left_2_be_approved';
}
else
{
$titleclass='forum_message_post_title';
$messageclass='forum_message_post_text';
$leftclass='forum_message_left';
}
// --------------------------------------
// Displaying the message
// --------------------------------------
// we mark the image we are displaying as set
unset($whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$rows[$display_post_id]['post_id']]);
echo "< table width = \"100%\" class = \"post\" cellspacing = \"5\" border = \"0\" > \n";
echo "\t< tr > \n";
echo "\t\t< td rowspan = \"3\" class = \"$leftclass\" > ";
if ($rows[$display_post_id]['user_id']=='0')
{
$name=prepare4display($rows[$display_post_id]['poster_name']);
}
else
{
$name=$rows[$display_post_id]['firstname'].' '.$rows[$display_post_id]['lastname'];
}
echo display_user_link($rows[$display_post_id]['user_id'], $name).'< br / > ';
echo $rows[$display_post_id]['post_date'].'< br / > < br / > ';
// The user who posted it can edit his thread only if the course admin allowed this in the properties of the forum
// The course admin him/herself can do this off course always
if (($current_forum['allow_edit']==1 AND $rows[$display_post_id]['user_id']==$_user['user_id']) or api_is_allowed_to_edit())
{
echo "< a href = \"editpost.php?forum=".$_GET['forum']."&thread=".$_GET['thread']."&post=".$rows[$display_post_id]['post_id']."\" > ".icon('../img/edit.gif',get_lang('Edit'))."< / a > \n";
}
if (api_is_allowed_to_edit())
{
echo "< a href = \"".$_SERVER['PHP_SELF']."?forum=".$_GET['forum']."&thread=".$_GET['thread']."&action=delete&content=post&id=".$rows[$display_post_id]['post_id']."\" onclick = \"javascript:if(!confirm('".addslashes(htmlentities(get_lang("DeletePost")))."')) return false ; \ " > ".icon('../img/delete.gif',get_lang('Delete'))."< / a > \n";
display_visible_invisible_icon('post', $rows[$display_post_id]['post_id'], $rows[$display_post_id]['visible'],array('forum'=>$_GET['forum'],'thread'=>$_GET['thread'], 'post'=>$_GET['post'] ));
echo "\n";
echo "< a href = \"viewthread.php?forum=".$_GET['forum']."&thread=".$_GET['thread']."&action=move&post=".$rows[$display_post_id]['post_id']."\" > ".icon('../img/forummovepost.gif',get_lang('Edit'))."< / a > \n";
}
echo '< br / > < br / > ';
//if (($current_forum_category['locked']==0 AND $current_forum['locked']==0 AND $current_thread['locked']==0) OR api_is_allowed_to_edit())
if ($current_forum_category['locked']==0 AND $current_forum['locked']==0 AND $current_thread['locked']==0 OR api_is_allowed_to_edit())
{
if ($_user['user_id'] OR ($current_forum['allow_anonymous']==1 AND !$_user['user_id']))
{
echo '< a href = "reply.php?forum='.$_GET['forum'].'&thread='.$_GET['thread'].'&post='.$rows[$display_post_id]['post_id'].'&action=replymessage" > '.get_lang('ReplyToMessage').'< / a > < br / > ';
echo '< a href = "reply.php?forum='.$_GET['forum'].'&thread='.$_GET['thread'].'&post='.$rows[$display_post_id]['post_id'].'&action=quote" > '.get_lang('QuoteMessage').'< / a > < br / > < br / > ';
}
}
else
{
if ($current_forum_category['locked']==1)
{
echo get_lang('ForumcategoryLocked').'< br / > ';
}
if ($current_forum['locked']==1)
{
echo get_lang('ForumLocked').'< br / > ';
}
if ($current_thread['locked']==1)
{
echo get_lang('ThreadLocked').'< br / > ';
}
}
echo "< / td > \n";
// note: this can be removed here because it will be displayed in the tree
if (isset($whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$rows[$display_post_id]['post_id']]) and !empty($whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$rows[$display_post_id]['post_id']]) and !empty($whatsnew_post_info[$_GET['forum']][$rows[$display_post_id]['thread_id']]))
{
$post_image=icon('../img/forumpostnew.gif');
}
else
{
$post_image=icon('../img/forumpost.gif');
}
if ($rows[$display_post_id]['post_notification']=='1' AND $rows[$display_post_id]['poster_id']==$_user['user_id'])
{
$post_image.=icon('../img/forumnotification.gif',get_lang('YouWillBeNotified'));
}
// The post title
echo "\t\t< td class = \"$titleclass\" > ".$post_image." ".prepare4display($rows[$display_post_id]['post_title'])."< / td > \n";
echo "\t< / tr > \n";
// The post message
echo "\t< tr > \n";
echo "\t\t< td class = \"$messageclass\" > ".prepare4display($rows[$display_post_id]['post_text'])."< / td > \n";
echo "\t< / tr > \n";
/*
// The added resources
echo "< tr > < td > ";
if (check_added_resources("forum_post", $rows[$display_post_id]["post_id"]))
{
echo "< i > ".get_lang("AddedResources")."< / i > < br / > ";
if ($rows[$display_post_id]['visible']=='0')
{
$addedresource_style="invisible";
}
display_added_resources("forum_post", $rows[$display_post_id]["post_id"], $addedresource_style);
}
echo "< / td > < / tr > ";
*/
// The post has been displayed => it can be removed from the what's new array
unset($whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$row['post_id']]);
unset($_SESSION['whatsnew_post_info'][$current_forum['forum_id']][$current_thread['thread_id']][$row['post_id']]);
echo "< / table > ";
// --------------------------------------
// Displaying the thread (structure)
// --------------------------------------
echo "< div class = \"structure\" > ".get_lang('Structure')."< / div > ";
$counter=0;
foreach ($rows as $post)
{
$counter++;
$indent=$post['indent_cnt']*'20';
echo "< div style = \"margin-left: " . $ indent . " px ; \ " > ";
if (isset($whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$post['post_id']]) and !empty($whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$post['post_id']]) and !empty($whatsnew_post_info[$_GET['forum']][$post['thread_id']]))
{
$post_image=icon('../img/forumpostnew.gif');
}
else
{
$post_image=icon('../img/forumpost.gif');
}
echo $post_image;
if ($_GET['post']==$post['post_id'] OR ($counter==1 AND !isset($_GET['post'])))
{
echo '< strong > '.prepare4display($post['post_title']).'< / strong > < / div > ';
}
else
{
if ($post['visible']=='0')
{
$class=' class="invisible"';
}
else
{
$class='';
}
echo "< a href = \"viewthread.php?forum=".$_GET['forum']."&thread=".$_GET['thread']."&post=".$post['post_id']."\" $ class > ".prepare4display($post['post_title'])."< / a > < / div > \n";
}
}
/**
* This function builds an array of all the posts in a given thread where the key of the array is the post_id
* It also adds an element children to the array which itself is an array that contains all the id's of the first-level children
* @return an array containing all the information on the posts of a thread
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
*/
function calculate_children($rows)
{
foreach($rows as $row)
{
$rows_with_children[$row["post_id"]]=$row;
$rows_with_children[$row["post_parent_id"]]["children"][]=$row["post_id"];
}
$rows=$rows_with_children;
$sorted_rows=array(0=>array());
_phorum_recursive_sort($rows, $sorted_rows);
unset($sorted_rows[0]);
return $sorted_rows;
}
function _phorum_recursive_sort($rows, & $threads, $seed=0, $indent=0)
{
if($seed>0)
{
$threads[$rows[$seed]["post_id"]]=$rows[$seed];
$threads[$rows[$seed]["post_id"]]["indent_cnt"]=$indent;
$indent++;
}
if(isset($rows[$seed]["children"]))
{
foreach($rows[$seed]["children"] as $child)
{
_phorum_recursive_sort($rows, $threads, $child, $indent);
}
}
}
?>
