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<?php
require_once 'Horde/IMAP/Thread.php';
/**
* The IMP_Thread class extends the IMAP_Thread class to include a function
* to generate the thread tree images. This class is necessary to ensure
* backwards compatibility with Horde 3.0.
*
* For the next (mythical) release of Horde 4.x, this code should be merged
* into the IMAP_Thread class.
*
* $Horde: imp/lib/IMAP/Thread.php,v 1.5.2.7 2008/02/11 03:52:29 slusarz Exp $
*
* Copyright 2005-2008 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (GPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/gpl.html.
*
* @author Michael Slusarz <slusarz@horde.org>
* @since IMP 4.1
* @package IMP
*/
class IMP_Thread extends IMAP_Thread {
/**
* Images used and their internal representations.
*
* @var array
*/
var $_imglist = array(
'0' => 'blank.png',
'1' => 'line.png',
'2' => 'join.png',
'3' => 'joinbottom-down.png',
'4' => 'joinbottom.png'
);
/**
* Generate the thread representation for the given index list in the
* internal format (a string with each character representing the graphic
* to be displayed from $_imglist).
*
* @param array $indices The list of indices to create a tree for.
* @param boolean $sortdir True for newest first, false for oldest first.
*
* @return array An array with the index as the key and the interal
* thread representation as the value.
*/
function getThreadTreeOb($indices, $sortdir)
{
$container = $last_level = $last_thread = null;
$tree = array();
if ($sortdir) {
$indices = array_reverse($indices);
}
/* If starting in the middle of a thread, the threadLevel tree needs
* to be built from the bottom of the current thread. */
$first = reset($indices);
$indentBase = $this->getThreadBase($first);
if (!empty($indentBase) && $indentBase != $first) {
reset($this->_lookup);
while (key($this->_lookup) != $indentBase) {
next($this->_lookup);
}
while (($key = key($this->_lookup)) != $first) {
$threadLevel[$this->getThreadIndent($key)] = $this->lastInLevel($key);
next($this->_lookup);
}
}
foreach ($indices as $val) {
$tree[$val] = '';
$indentBase = $this->getThreadBase($val);
if (empty($indentBase)) {
continue;
}
$lines = '';
$indentLevel = $this->getThreadIndent($val);
$lastinlevel = $this->lastInLevel($val);
if ($lastinlevel && ($indentBase == $val)) {
continue;
}
if ($lastinlevel) {
$join_img = ($sortdir) ? 3 : 4;
} elseif (($indentLevel == 1) && ($indentBase == $val)) {
$join_img = ($sortdir) ? 4 : 3;
$container = $val;
} else {
$join_img = 2;
}
$threadLevel[$indentLevel] = $lastinlevel;
$line = '';
for ($i = ($container == $indentBase) ? 1 : 2; $i < $indentLevel; ++$i) {
$line .= (!isset($threadLevel[$i]) || ($threadLevel[$i])) ? 0 : 1;
}
$tree[$val] = $line . $join_img;
}
return $tree;
}
/**
* Generate the thread representation image for the given index list.
*
* @param array $indices The list of indices to create a tree for.
* @param boolean $sortdir True for newest first, false for oldest first.
*
* @return array An array with the index as the key and the thread image
* representation as the value.
*/
function getThreadImageTree($indices, $sortdir)
{
$tree = array();
$imgs = $this->getImageUrls(false);
foreach ($this->getThreadTreeOb($indices, $sortdir) as $k => $v) {
$tree[$k] = '';
for ($i = 0, $length = strlen($v); $i < $length; ++$i) {
$tree[$k] .= $imgs[$v[$i]];
}
}
return $tree;
}
/**
* Get potential image URLs that may be used to display a thread.
* This function may be called statically, i.e.:
* IMP_Thread::getImageUrls();
*
* @since IMP 4.2
*
* @param ids $ids Add unique DOM ID to each image?
*
* @return array An array with the image code as a key and the image url
* as the value.
*/
function getImageUrls($ids = true)
{
$graphicsdir = $GLOBALS['registry']->getImageDir('horde');
$args = array();
$vars = get_class_vars('IMP_Thread');
foreach ($vars['_imglist'] as $key => $val) {
if ($ids) {
$args['id'] = 'thread_img_' . $key;
}
$out[$key] = Horde::img('tree/' . (($key != 0 && !empty($GLOBALS['nls']['rtl'][$GLOBALS['language']])) ? ('rev-' . $val) : $val), '', $args, $graphicsdir);
}
return $out;
}
}
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