protected function addId(Heading $node)
{
// If the node has an ID, no need to generate it
$attributes = $node->getData('attributes', []);
if (array_key_exists('id', $attributes) && !empty($attributes['id'])) {
// TODO :: check for uniqueness
return $attributes['id'];
}
// Well, seems we have to generate an ID
$walker = $node->walker();
$inside = [];
while ($event = $walker->next()) {
$insideNode = $event->getNode();
if ($insideNode instanceof Heading) {
continue;
}
$inside[] = $insideNode;
}
$text = '';
foreach ($inside as $other) {
if ($other instanceof Text) {
$text .= ' ' . $other->getContent();
}
}
$text = 'page_' . DauxHelper::slug(trim($text));
// TODO :: check for uniqueness
$node->data['attributes']['id'] = $text;
}
