/**
* Set and get a specific thread
*
* @param mixed $id ID (integer) or alias (string)
* @return object
*/
public function thread($id = null)
{
if (!isset($this->_cache['thread']) || $id !== null && (int) $this->_cache['thread']->get('id') != $id) {
$this->_cache['thread'] = null;
if (isset($this->_cache['threads']) && $this->_cache['threads'] instanceof ItemList) {
foreach ($this->_cache['threads'] as $key => $thread) {
if ((int) $thread->get('id') == $id) {
$this->_cache['thread'] = $thread;
break;
}
}
}
if (!$this->_cache['thread']) {
$this->_cache['thread'] = Thread::getInstance($id);
}
if (!$this->_cache['thread']->exists()) {
$this->_cache['thread']->set('scope', $this->get('scope'));
$this->_cache['thread']->set('scope_id', $this->get('scope_id'));
}
}
return $this->_cache['thread'];
}
