/**
* Renders menu tree. Internal method.
*
* @param ioMenuItem $item Menu item
* @param integer $depth The depth of children to render
* @param boolean $renderAsChild Render with attributes on the li (true) or the ul around the children (false)
*
* @return string
*/
protected function _render(ioMenuItem $item, $depth = null, $renderAsChild = false)
{
/**
* Return an empty string if any of the following are true:
* a) The menu has no children eligible to be displayed
* b) The depth is 0
* c) This menu item has been explicitly set to hide its children
*/
if (!$item->hasChildren() || $depth === 0 || !$item->showChildren()) {
return;
}
if ($renderAsChild) {
$attributes = array('class' => 'menu_level_' . $item->getLevel());
} else {
$attributes = $item->getAttributes();
// give the top ul a class of "menu" of none specified
if (!isset($attributes['class'])) {
$attributes['class'] = 'menu';
}
}
// render children with a depth - 1
$childDepth = $depth === null ? null : $depth - 1;
$html = $this->_format($item->getLevel(), '<ul' . _tag_options($attributes) . '>', 'ul');
$html .= $this->_renderChildren($item, $childDepth);
$html .= $this->_format($item->getLevel(), '</ul>', 'ul');
return $html;
}
