static function pf_toplevelpage( &$parser /* , $title = null */ ) {
$t = self::newTitleObject( $parser, func_get_args() );
if( $t === null ) {
return ''; // invalid title given
}
//get all parents because the toplevel is the highest existing parent:
$parentpages = SubpageInfo::getAncestorPages( $t );
if( ! empty( $parentpages ) ) {
return wfEscapeWikiText( $parentpages[0]->getPrefixedText() );
}
else {
////no parent! The page itself is the top level:
return wfEscapeWikiText( $t->getPrefixedText() );
}
}
/**
* Delivers the subpage level of a given Page.
*
* @param Title $page Page to get the level from.
*
* @return Title Result The Level the given page has. Level 0 means the given page is no subpage at all.
*/
static function getSubpageLevel( Title $page ) {
$ancestors = SubpageInfo::getAncestorPages( $page );
if( ! empty( $ancestors ) ) {
return count ($ancestors );
}
else //no parent! The page itself is the top level:
return 0;
}