<?php

namespace AmpProject;

/**
 * Interface with constants for the different types of attributes.
 *
 * phpcs:disable Generic.Files.LineLength.TooLong
 *
 * @package ampproject/amp-toolbox
 */
interface Attribute
{

    const ACTION                   = 'action';
    const ALT                      = 'alt';
    const AMP                      = 'amp';
    const AMP4ADS                  = 'amp4ads';
    const AMP4ADS_BOILERPLATE      = 'amp4ads-boilerplate';
    const AMP4ADS_EMOJI            = self::AMP_EMOJI . '4ads';
    const AMP4ADS_EMOJI_ALT        = self::AMP_EMOJI_ALT . '4ads';
    const AMP4EMAIL                = 'amp4email';
    const AMP4EMAIL_BOILERPLATE    = 'amp4email-boilerplate';
    const AMP4EMAIL_EMOJI          = self::AMP_EMOJI . '4email';
    const AMP4EMAIL_EMOJI_ALT      = self::AMP_EMOJI_ALT . '4email';
    const AMP_BOILERPLATE          = 'amp-boilerplate';
    const AMP_CUSTOM               = 'amp-custom';
    const AMP_EMOJI                = "\xE2\x9A\xA1";
    const AMP_EMOJI_ALT            = "\xE2\x9A\xA1\xEF\xB8\x8F"; // See https://github.com/ampproject/amphtml/issues/25990.
    const AMP_ONERROR              = 'amp-onerror';
    const AMP_RUNTIME              = 'amp-runtime';
    const AMP_SCRIPT_SRC           = 'amp-script-src';
    const ARIA_HIDDEN              = 'aria-hidden';
    const ARIA_LABEL               = 'aria-label';
    const AS_                      = 'as'; // Underscore needed because 'as' is a PHP keyword.
    const ASYNC                    = 'async';
    const ATTRIBUTION              = 'attribution';
    const AUTOPLAY                 = 'autoplay';
    const CHARSET                  = 'charset';
    const CLASS_                   = 'class'; // Underscore needed because 'class' is a PHP keyword.
    const CONTENT                  = 'content';
    const CROSSORIGIN              = 'crossorigin';
    const CUSTOM_ELEMENT           = 'custom-element';
    const CUSTOM_TEMPLATE          = 'custom-template';
    const DATA                     = 'data';
    const DECODING                 = 'decoding';
    const DISABLE_INLINE_WIDTH     = 'disable-inline-width';
    const HEIGHT                   = 'height';
    const HEIGHTS                  = 'heights';
    const HIDDEN                   = 'hidden';
    const HOST_SERVICE             = 'host-service';
    const HREF                     = 'href';
    const HTTP_EQUIV               = 'http-equiv';
    const I_AMPHTML_BINDING        = 'i-amphtml-binding';
    const I_AMPHTML_NO_BOILERPLATE = 'i-amphtml-no-boilerplate';
    const I_AMPHTML_SSR            = 'i-amphtml-ssr';
    const I_AMPHTML_VERSION        = 'i-amphtml-version';
    const ID                       = 'id';
    const IMAGESRCSET              = 'imagesrcset';
    const IMAGESIZES               = 'imagesizes';
    const IMPORTANCE               = 'importance';
    const INTRINSICSIZE            = 'intrinsicsize';
    const LAYOUT                   = 'layout';
    const LIGHTBOX                 = 'lightbox';
    const LOADING                  = 'loading';
    const LOOP                     = 'loop';
    const MEDIA                    = 'media';
    const NAME                     = 'name';
    const NOLOADING                = 'noloading';
    const NOMODULE                 = 'nomodule';
    const OBJECT_FIT               = 'object-fit';
    const OBJECT_POSITION          = 'object-position';
    const ON                       = 'on';
    const PLACEHOLDER              = 'placeholder';
    const POSTER                   = 'poster';
    const PROFILE                  = 'profile';
    const REFERRERPOLICY           = 'referrerpolicy';
    const REL                      = 'rel';
    const ROLE                     = 'role';
    const SRCSET                   = 'srcset';
    const SIZES                    = 'sizes';
    const STYLE                    = 'style';
    const SRC                      = 'src';
    const TABINDEX                 = 'tabindex';
    const TEMPLATE                 = 'template';
    const TITLE                    = 'title';
    const TYPE                     = 'type';
    const VALUE                    = 'value';
    const VIEWPORT                 = 'viewport';
    const WIDTH                    = 'width';

    const ALL_AMP       = [self::AMP, self::AMP_EMOJI, self::AMP_EMOJI_ALT];
    const ALL_AMP4ADS   = [self::AMP4ADS, self::AMP4ADS_EMOJI, self::AMP4ADS_EMOJI_ALT];
    const ALL_AMP4EMAIL = [self::AMP4EMAIL, self::AMP4EMAIL_EMOJI, self::AMP4EMAIL_EMOJI_ALT];

    const ALL_BOILERPLATES = [self::AMP_BOILERPLATE, self::AMP4ADS_BOILERPLATE, self::AMP4EMAIL_BOILERPLATE];

    const TYPE_HTML       = 'text/html';
    const TYPE_JSON       = 'application/json';
    const TYPE_LD_JSON    = 'application/ld+json';
    const TYPE_PDF        = 'application/pdf';
    const TYPE_MODULE     = 'module';
    const TYPE_TEXT_PLAIN = 'text/plain';

    const REL_AMPHTML       = 'amphtml';
    const REL_CANONICAL     = 'canonical';
    const REL_DNS_PREFETCH  = 'dns-prefetch';
    const REL_ICON          = 'icon';
    const REL_MODULEPRELOAD = 'modulepreload';
    const REL_NOAMPHTML     = 'noamphtml';
    const REL_NOFOLLOW      = 'nofollow';
    const REL_PRECONNECT    = 'preconnect';
    const REL_PREFETCH      = 'prefetch';
    const REL_PRELOAD       = 'preload';
    const REL_PRERENDER     = 'prerender';
    const REL_STYLESHEET    = 'stylesheet';

    const DATA_AMP_STORY_PLAYER_POSTER_IMG = 'data-amp-story-player-poster-img';
    const DATA_HERO                        = 'data-hero';
    const DATA_HERO_CANDIDATE              = 'data-hero-candidate';

    const CROSSORIGIN_ANONYMOUS = 'anonymous';
}