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<?php |
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/** |
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* Embeds webfonts in styles. |
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* |
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* @package Kirki |
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* @category Core |
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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 |
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*/ |
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/** |
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* Manages the way Google Fonts are enqueued. |
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*/ |
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final class Kirki_Modules_Webfonts_Embed { |
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/** |
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* The config ID. |
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* |
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* @access protected |
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* @since 3.0.0 |
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* @var string |
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*/ |
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protected $config_id; |
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/** |
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* The Kirki_Modules_Webfonts 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 $webfonts; |
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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 $googlefonts; |
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/** |
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* The google link |
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* |
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* @access public |
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* @var string |
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*/ |
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public $link = ''; |
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/** |
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* Constructor. |
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* |
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* @access public |
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* @since 3.0 |
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*/ |
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public function __construct( $config_id, $webfonts, $googlefonts, $args = array() ) { |
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$this->config_id = $config_id; |
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$this->webfonts = $webfonts; |
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$this->googlefonts = $googlefonts; |
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add_filter( "kirki/{$config_id}/dynamic_css", array( $this, 'embed_css' ) ); |
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} |
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/** |
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* Embeds the CSS from googlefonts API inside the Kirki output CSS. |
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* |
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* @access public |
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* @since 3.0.0 |
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* @param string $css The original CSS. |
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* @return string The modified CSS. |
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*/ |
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public function embed_css( $css ) { |
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// Go through our fields and populate $this->fonts. |
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$this->webfonts->loop_fields(); |
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$this->googlefonts->fonts = apply_filters( 'kirki/enqueue_google_fonts', $this->googlefonts->fonts ); |
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// Goes through $this->fonts and adds or removes things as needed. |
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$this->googlefonts->process_fonts(); |
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// Go through $this->fonts and populate $this->link. |
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$link_obj = new Kirki_Modules_Webfonts_Link( $this->config_id, $this->webfonts, $this->googlefonts ); |
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$link_obj->create_link(); |
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$this->link = $link_obj->link; |
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// If $this->link is not empty then enqueue it. |
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if ( '' !== $this->link ) { |
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return $this->get_url_contents( $this->link ) . "\n" . $css; |
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} |
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return $css; |
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} |
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/** |
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* Get the contents of a remote google-fonts link. |
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* Responses get cached for 1 day. |
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* |
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* @access protected |
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* @since 3.0.0 |
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* @param string $url The link we want to get. |
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* @return string|false Returns false if there's an error. |
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*/ |
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protected function get_url_contents( $url = '' ) { |
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// If $url is not set, use $this->link. |
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$url = ( '' === $url ) ? $this->link : $url; |
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// Sanitize the URL. |
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$url = esc_url_raw( $url ); |
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// The transient name. |
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$transient_name = 'kirki_googlefonts_contents_' . md5( $url ); |
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// Get the transient value. |
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$html = get_transient( $transient_name ); |
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// Check for transient, if none, grab remote HTML file. |
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if ( false === $html ) { |
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// Get remote HTML file. |
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$response = wp_remote_get( $url ); |
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// Check for error. |
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if ( is_wp_error( $response ) ) { |
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set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS ); |
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return false; |
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} |
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// Parse remote HTML file. |
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$data = wp_remote_retrieve_body( $response ); |
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// Check for error. |
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if ( is_wp_error( $data ) ) { |
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set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS ); |
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return false; |
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} |
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// If empty, return false. |
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if ( ! $data ) { |
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set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS ); |
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return false; |
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} |
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// Store remote HTML file in transient, expire after 24 hours. |
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set_transient( $transient_name, $data, DAY_IN_SECONDS ); |
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set_transient( 'kirki_googlefonts_fallback_to_link', 'no', DAY_IN_SECONDS ); |
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} |
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return $html; |
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} |
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} |
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aristath /
kirki
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This check looks from parameters that have been defined for a function or method, but which are not used in the method body.