/**
* The page will be invisible if it has no resource and no visible children
* This method is used to hide empty parent items in backend navigation
*
* @param Zend_Navigation_Page $page page to check
* @return bool
*/
public function isVisibleAtBackend(Zend_Navigation_Page $page)
{
if ($page->getResource()) {
return true;
}
$visible = true;
$iterator = new RecursiveIteratorIterator($page, RecursiveIteratorIterator::SELF_FIRST);
foreach ($iterator as $child) {
if (!$child->getResource()) {
continue;
// anchor page
}
$visible = $this->accept($child, false);
if ($visible) {
break;
}
}
return $visible;
}
/**
* Determines whether a page should be accepted by ACL when iterating
*
* Rules:
* - If helper has no ACL, page is accepted
* - If page has a resource or privilege defined, page is accepted
* if the ACL allows access to it using the helper's role
* - If page has no resource or privilege, page is accepted
*
* @param Zend_Navigation_Page $page page to check
* @return bool whether page is accepted by ACL
*/
protected function _acceptAcl(Zend_Navigation_Page $page)
{
if (!($acl = $this->getAcl())) {
// no acl registered means don't use acl
return true;
}
$role = $this->getRole();
$resource = $page->getResource();
$privilege = $page->getPrivilege();
if ($resource || $privilege) {
// determine using helper role and page resource/privilege
return $acl->isAllowed($role, $resource, $privilege);
}
return true;
}
/**
* 根据Zend_Navigation_Page对象生成资源字符串
*
* @static
* @param Zend_Navigation_Page $page
* @return string
*/
public static function parseNavigationPage(Zend_Navigation_Page $page)
{
if ($page instanceof Zend_Navigation_Page_Mvc) {
$mvc = array($page->getModule(), $page->getController(), $page->getAction());
return implode(self::SEPARATOR, array_filter($mvc));
} else {
if ($page instanceof Zend_Navigation_Page_Uri) {
return self::parseUri($page->getUri());
}
}
return $page->getResource();
}
