WP_Font_Face

15class WP_Font_Face {16 17	/**18	 * The font-face property defaults.19	 *20	 * @since 6.4.021	 *22	 * @var string[]23	 */24	private $font_face_property_defaults = array(25		'font-family'  => '',26		'font-style'   => 'normal',27		'font-weight'  => '400',28		'font-display' => 'fallback',29	);30 31	/**32	 * Valid font-face property names.33	 *34	 * @since 6.4.035	 *36	 * @var string[]37	 */38	private $valid_font_face_properties = array(39		'ascent-override',40		'descent-override',41		'font-display',42		'font-family',43		'font-stretch',44		'font-style',45		'font-weight',46		'font-variant',47		'font-feature-settings',48		'font-variation-settings',49		'line-gap-override',50		'size-adjust',51		'src',52		'unicode-range',53	);54 55	/**56	 * Valid font-display values.57	 *58	 * @since 6.4.059	 *60	 * @var string[]61	 */62	private $valid_font_display = array( 'auto', 'block', 'fallback', 'swap', 'optional' );63 64	/**65	 * Array of font-face style tag's attribute(s)66	 * where the key is the attribute name and the67	 * value is its value.68	 *69	 * @since 6.4.070	 *71	 * @var string[]72	 */73	private $style_tag_attrs = array();74 75	/**76	 * Creates and initializes an instance of WP_Font_Face.77	 *78	 * @since 6.4.079	 */80	public function __construct() {81		if (82			function_exists( 'is_admin' ) && ! is_admin()83			&&84			function_exists( 'current_theme_supports' ) && ! current_theme_supports( 'html5', 'style' )85		) {86			$this->style_tag_attrs = array( 'type' => 'text/css' );87		}88	}89 90	/**91	 * Generates and prints the `@font-face` styles for the given fonts.92	 *93	 * @since 6.4.094	 *