$attrLists * @property-read string $specUrl * @property-read array $htmlFormat */ final class A extends Tag implements Identifiable { /** * ID of the tag. * * @var string */ const ID = 'A'; /** * Array of spec rules. * * @var array */ const SPEC = [ SpecRule::TAG_NAME => Element::A, SpecRule::ATTRS => [ Attribute::BORDER => [], Attribute::DOWNLOAD => [], Attribute::HREF => [ SpecRule::DISALLOWED_VALUE_REGEX => '__amp_source_origin', SpecRule::VALUE_URL => [ SpecRule::PROTOCOL => [ Protocol::FTP, Protocol::GEO, Protocol::HTTP, Protocol::HTTPS, Protocol::MAILTO, Protocol::MAPS, Protocol::BIP, Protocol::BBMI, Protocol::CHROME, Protocol::ITMS_SERVICES, Protocol::FACETIME, Protocol::FB_ME, Protocol::FB_MESSENGER, Protocol::FEED, Protocol::INTENT, Protocol::LINE, Protocol::MICROSOFT_EDGE, Protocol::SKYPE, Protocol::SMS, Protocol::SNAPCHAT, Protocol::TEL, Protocol::TG, Protocol::THREEMA, Protocol::TWITTER, Protocol::VIBER, Protocol::WEBCAL, Protocol::WEB_MASTODON, Protocol::WH, Protocol::WHATSAPP, ], SpecRule::ALLOW_EMPTY => true, ], ], Attribute::HREFLANG => [], Attribute::MEDIA => [], Attribute::REFERRERPOLICY => [], Attribute::REL => [ SpecRule::DISALLOWED_VALUE_REGEX => '(^|\s)(components|dns-prefetch|import|manifest|preconnect|prefetch|preload|prerender|serviceworker|stylesheet|subresource)(\s|$)', ], Attribute::ROLE => [ SpecRule::IMPLICIT => true, ], Attribute::SHOW_TOOLTIP => [ SpecRule::VALUE => [ 'auto', 'true', ], ], Attribute::TABINDEX => [ SpecRule::IMPLICIT => true, ], Attribute::TARGET => [ SpecRule::VALUE => [ '_blank', '_self', '_top', ], ], Attribute::TYPE => [ SpecRule::VALUE_CASEI => [ 'text/html', 'application/rss+xml', ], ], '[href]' => [], ], SpecRule::ATTR_LISTS => [ AttributeList\ClickAttributions::ID, AttributeList\NameAttr::ID, AttributeList\PrivateClickMeasurementAttributes::ID, ], SpecRule::SPEC_URL => 'https://amp.dev/documentation/guides-and-tutorials/learn/spec/amphtml/#links', SpecRule::HTML_FORMAT => [ Format::AMP, Format::AMP4ADS, ], ]; }