function url($url = null)
{
if (is_null($url)) {
if (isset($this->cachedUrl)) {
return $this->cachedUrl;
}
if (is_callable($url = $this->url)) {
$url = $url();
}
if (isset($url) && $this->parent && ($url === '' || $url[0] != '/') && !preg_match('/^\\w+:/', $url)) {
$base = $this->parent->url();
$url = exists($base) ? exists($url) ? "{$base}/{$url}" : $base : $url;
} else {
if ($url && $url[0] == '/') {
$url = $this->getRequest()->getAttribute('baseUri') . $url;
}
}
$this->url = $url;
if (exists($url)) {
$url = $this->evaluateUrl($url);
}
return $this->cachedUrl = $url;
}
//else DO NOT CACHE IT YET!
$this->url = $url;
return $this;
}
private function linkIsActive(NavigationLinkInterface $link, $url)
{
$linkUrl = $link->url();
if ($linkUrl === $url) {
return true;
}
foreach ($link->links() as $sub) {
if ($this->linkIsActive($sub, $url)) {
return true;
}
}
return false;
}
