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<?php |
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/** |
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* Handles webfonts. |
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* |
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* @package Kirki |
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* @category Modules |
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* @author Aristeides Stathopoulos |
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* @copyright Copyright (c) 2017, Aristeides Stathopoulos |
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* @license http://opensource.org/licenses/https://opensource.org/licenses/MIT |
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* @since 3.0.0 |
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*/ |
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// Exit if accessed directly. |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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/** |
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* Adds script for tooltips. |
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*/ |
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class Kirki_Modules_Webfonts { |
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/** |
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* The object instance. |
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* |
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* @static |
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* @access private |
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* @since 3.0.0 |
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* @var object |
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*/ |
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private static $instance; |
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/** |
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* Which method to use when loading googlefonts. |
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* Available options: link, js, embed. |
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* |
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* @static |
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* @access private |
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* @since 3.0.0 |
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* @var string |
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*/ |
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private static $method = array( |
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'global' => 'embed', |
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); |
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/** |
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* Whether we should fallback to the link method or not. |
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* |
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* @access private |
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* @since 3.0.0 |
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* @var bool |
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*/ |
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private $fallback_to_link = false; |
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/** |
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* The Kirki_Fonts_Google object. |
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* |
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* @access protected |
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* @since 3.0.0 |
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* @var object |
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*/ |
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protected $fonts_google; |
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/** |
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* The class constructor |
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* |
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* @access protected |
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* @since 3.0.0 |
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*/ |
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protected function __construct() { |
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include_once wp_normalize_path( dirname( __FILE__ ) . '/class-kirki-fonts.php' ); |
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include_once wp_normalize_path( dirname( __FILE__ ) . '/class-kirki-fonts-google.php' ); |
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$this->fonts_google = Kirki_Fonts_Google::get_instance(); |
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$this->maybe_fallback_to_link(); |
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$this->init(); |
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} |
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/** |
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* Gets an instance of this object. |
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* Prevents duplicate instances which avoid artefacts and improves performance. |
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* |
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* @static |
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* @access public |
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* @since 3.0.0 |
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* @return object |
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*/ |
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public static function get_instance() { |
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if ( ! self::$instance ) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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/** |
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* Init other objects depending on the method we'll be using. |
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* |
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* @access protected |
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* @since 3.0.0 |
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*/ |
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protected function init() { |
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foreach ( self::$method as $config_id => $config_method ) { |
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$method = $this->get_method( $config_id ); |
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$classname = 'Kirki_Modules_Webfonts_' . ucfirst( $method ); |
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new $classname( $config_id, $this, $this->fonts_google ); |
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} |
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} |
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/** |
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* Get the method we're going to use. |
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* |
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* @access public |
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* @since 3.0.0 |
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* @param string $config_id The config-ID. |
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* @return string |
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*/ |
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public function get_method( $config_id ) { |
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// Figure out which method to use. |
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$method = apply_filters( "kirki/{$config_id}/googlefonts_load_method", 'embed' ); |
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// Fallback to 'embed' if value is invalid. |
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if ( 'async' !== $method || 'embed' !== $method || 'link' !== $method ) { |
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$method = 'embed'; |
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} |
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// Fallback to 'link' if embed was not possible. |
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if ( 'embed' === $method && $this->fallback_to_link ) { |
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$method = 'link'; |
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} |
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// Force using the JS method while in the customizer. |
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// This will help us work-out the live-previews for typography fields. |
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// If we're not in the customizer use the defined method. |
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return ( is_customize_preview() ) ? 'async' : $method; |
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} |
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/** |
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* Should we fallback to link method? |
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* |
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* @access protected |
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* @since 3.0.0 |
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*/ |
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protected function maybe_fallback_to_link() { |
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// Get the $fallback_to_link value from transient. |
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$fallback_to_link = get_transient( 'kirki_googlefonts_fallback_to_link' ); |
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if ( 'yes' === $fallback_to_link ) { |
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$this->fallback_to_link = true; |
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} |
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// Use links when in the customizer. |
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global $wp_customize; |
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if ( $wp_customize ) { |
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$this->fallback_to_link = true; |
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} |
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} |
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/** |
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* Goes through all our fields and then populates the $this->fonts property. |
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* |
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* @access public |
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*/ |
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public function loop_fields() { |
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foreach ( Kirki::$fields as $field ) { |
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$this->fonts_google->generate_google_font( $field ); |
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} |
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} |
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} |
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aristath /
kirki
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