/**
* Recusively converts a child node and its children to XML for output
*
* @param navigation_node $child The child to convert
* @param int $depth Pointlessly used to track the depth of the XML structure
* @return string JSON
*/
protected function convert_child($child, $depth = 1)
{
if (!$child->display) {
return '';
}
$attributes = array();
$attributes['id'] = $child->id;
$attributes['name'] = $child->text;
$attributes['type'] = $child->type;
$attributes['key'] = $child->key;
$attributes['class'] = $child->get_css_type();
if ($child->icon instanceof pix_icon) {
$attributes['icon'] = array('component' => $child->icon->component, 'pix' => $child->icon->pix);
foreach ($child->icon->attributes as $key => $value) {
if ($key == 'class') {
$attributes['icon']['classes'] = explode(' ', $value);
} else {
if (!array_key_exists($key, $attributes['icon'])) {
$attributes['icon'][$key] = $value;
}
}
}
} else {
if (!empty($child->icon)) {
$attributes['icon'] = (string) $child->icon;
}
}
if ($child->forcetitle || $child->title !== $child->text) {
$attributes['title'] = htmlentities($child->title, ENT_QUOTES, 'UTF-8');
}
if (array_key_exists($child->key . ':' . $child->type, $this->expandable)) {
$attributes['expandable'] = $child->key;
$child->add_class($this->expandable[$child->key . ':' . $child->type]['id']);
}
if (count($child->classes) > 0) {
$attributes['class'] .= ' ' . join(' ', $child->classes);
}
if (is_string($child->action)) {
$attributes['link'] = $child->action;
} else {
if ($child->action instanceof moodle_url) {
$attributes['link'] = $child->action->out();
} else {
if ($child->action instanceof action_link) {
$attributes['link'] = $child->action->url->out();
}
}
}
$attributes['hidden'] = $child->hidden;
$attributes['haschildren'] = $child->children->count() > 0 || $child->type == navigation_node::TYPE_CATEGORY;
if ($child->children->count() > 0) {
$attributes['children'] = array();
foreach ($child->children as $subchild) {
$attributes['children'][] = $this->convert_child($subchild, $depth + 1);
}
}
if ($depth > 1) {
return $attributes;
} else {
return json_encode($attributes);
}
}
