function displayTree(Collections $elem, $html, $value, $name, $user = null)
{
$img_expand = 'blue_expand.png';
$img_expand_up = 'blue_expand_up.png';
if ($elem->hasChild()) {
$html .= '<ul>';
foreach ($elem->getChilds() as $child) {
$html .= "<li class=\"rid_" . $child->getId() . "\"";
if ($child->isEncodable()) {
$html .= ' data-enc="true" ';
}
$html .= "><div class=\"col_name\">";
$html .= image_tag($img_expand, array('alt' => '+', 'class' => 'tree_cmd collapsed'));
$html .= image_tag($img_expand_up, array('alt' => '-', 'class' => 'tree_cmd expanded hidden'));
$html .= "<span>" . $child->getName() . "</span>";
$options = array('type' => 'checkbox', 'class' => 'col_check', 'value' => $child->getId(), 'name' => $name);
if (is_array($value) && in_array($child->getId(), $value)) {
$options['checked'] = "checked";
}
if ($name != '') {
$html .= '<label class="chk">' . $this->renderTag('input', $options) . '</label>';
} else {
if (!$this->getOption('is_choose')) {
$html .= ' ' . image_tag('info.png', array('title' => 'info', 'class' => 'extd_info', 'data-manid' => $child->getMainManagerRef(), 'data-staffid' => $child->getStaffRef()));
if ($user->isA(Users::ADMIN) || $user->isAtLeast(Users::MANAGER) && $child->getTypeInCol() >= Users::MANAGER) {
$html .= link_to(image_tag('edit.png', array('title' => 'Edit Collection', 'class' => 'collection_edit')), 'collection/edit?id=' . $child->getId());
$html .= link_to(image_tag('duplicate.png', array('title' => 'Duplicate Collection')), 'collection/new?duplicate_id=' . $child->getId());
}
}
}
$html .= "</div>";
$html .= $this->displayTree($child, '', $value, $name, $user) . '</li>';
}
$html .= '</ul>';
}
return $html;
}