<?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);
foreach ($rows as $post)
{
// the style depends on the status of the message: approved or not
if ($post['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';
}
$indent=$post['indent_cnt']*'20';
echo "< div style = \"margin-left: " . $ indent . " px ; \ " > ";
echo "< table width = \"100%\" class = \"post\" cellspacing = \"5\" border = \"0\" > \n";
echo "\t< tr > \n";
echo "\t\t< td rowspan = \"3\" class = \"$leftclass\" > ";
if ($post['user_id']=='0')
{
$name=$post['poster_name'];
}
else
{
$name=$post['firstname'].' '.$post['lastname'];
}
echo display_user_link($post['user_id'], $name).'< br / > ';
echo $post['post_date'].'< br / > < br / > ';
// The user who posted it can edit his thread only if the course admin allowed this in the properties of the forum
// The course admin him/herself can do this off course always
if (($current_forum['allow_edit']==1 AND $post['user_id']==$_user['user_id']) or api_is_allowed_to_edit())
{
echo "< a href = \"editpost.php?".api_get_cidreq()."&forum=".$_GET['forum']."&thread=".$_GET['thread']."&post=".$post['post_id']."\" > ".icon('../img/edit.gif',get_lang('Edit'))."< / a > \n";
}
if (api_is_allowed_to_edit())
{
echo "< a href = \"".api_get_self()."?".api_get_cidreq()."&forum=".$_GET['forum']."&thread=".$_GET['thread']."&action=delete&content=post&id=".$post['post_id']."\" onclick = \"javascript:if(!confirm('".addslashes(htmlentities(get_lang("DeletePost"),ENT_QUOTES,$charset))."')) return false ; \ " > ".icon('../img/delete.gif',get_lang('Delete'))."< / a > \n";
display_visible_invisible_icon('post', $post['post_id'], $post['visible'],array('forum'=>$_GET['forum'],'thread'=>$_GET['thread'] ));
echo "\n";
echo "< a href = \"viewthread.php?".api_get_cidreq()."&forum=".$_GET['forum']."&thread=".$_GET['thread']."&action=move&post=".$post['post_id']."\" > ".icon('../img/deplacer_fichier.gif',get_lang('Edit'))."< / a > ";
}
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?'.api_get_cidreq().'&forum='.$_GET['forum'].'&thread='.$_GET['thread'].'&post='.$post['post_id'].'&action=replymessage" > '.get_lang('ReplyToMessage').'< / a > < br / > ';
echo '< a href = "reply.php?'.api_get_cidreq().'&forum='.$_GET['forum'].'&thread='.$_GET['thread'].'&post='.$post['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']][$post['post_id']]) and !empty($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
{
$post_image=icon('../img/forumpost.gif');
}
if ($post['post_notification']=='1' AND $post['poster_id']==$_user['user_id'])
{
$post_image.=icon('../img/forumnotification.gif',get_lang('YouWillBeNotified'));
}
// The post title
echo "\t\t< td class = \"$titleclass\" > ".prepare4display($post['post_title'])."< / td > \n";
echo "\t< / tr > \n";
// The post message
echo "\t< tr > \n";
echo "\t\t< td class = \"$messageclass\" > ".prepare4display($post['post_text'])."< / td > \n";
echo "\t< / tr > \n";
/*
// The added resources
echo "< tr > < td > ";
if (check_added_resources("forum_post", $post["post_id"]))
{
echo "< i > ".get_lang("AddedResources")."< / i > < br / > ";
if ($post['visible']=='0')
{
$addedresource_style="invisible";
}
display_added_resources("forum_post", $post["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']][$row['post_id']]);
echo "< / table > \n";
echo "< / div > ";
}
/**
* This function builds an array of all the posts in a given thread where the key of the array is the post_id
* It also adds an element children to the array which itself is an array that contains all the id's of the first-level children
* @return an array containing all the information on the posts of a thread
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
*/
function calculate_children($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);
}
}
}
?>
