options = $swp_user_options; $this->init(); } private function init() { add_action( 'wp_head', array( $this, 'add_header_output' ), 1 ); add_filter( 'swp_header_html', array( $this, 'output_font_css' ), 20 ); add_action( 'admin_head', array( $this, 'output_font_css' ), 20 ); } /** * The function that we're hooking into the header * * All other items being added to the header will be hooked into * swp_meta_tags which we will call and print via this function. * * @since 1.4.0 * @access public * @param none * @return none */ public function add_header_output() { // Get the global options and the post ID $info['postID'] = get_the_ID(); /** * Create and return the values to be used in the header meta tags * * We use our own proprietary header filter so that anything being added to the head * across our plugin or across any of our addons will all be output at the same time. * Once the filter has been run and the string is fully compiled, then we will use * the WordPress head hook to output the compiled string. * * @since 2.1.4 * @access public * @var array $info An array of information * @return array $info The modified array with the 'meta_tag_values' index populated */ $info = apply_filters( 'swp_header_values', $info ); /** * Assembles the meta tags, CSS, icon font, and other items that go in * * Note: Each meta tag should begin with PHP_EOL for clean structured HTML output * * @since 2.1.4 * @since 4.5.0 | 26 JUL 2024 | Added the wp_kses() function to the output. * @access public * @var array $info An array of information * @return array $info The modified array with the 'html_output' index populated. */ $meta_html = apply_filters( 'swp_header_html', '' ); if ( $meta_html ) : echo PHP_EOL . '' . PHP_EOL; $allowed_html = array( 'meta' => array( 'name' => array(), 'content' => array(), 'property'=> array(), 'http-equiv' => array(), 'charset' => array(), ), 'style' => array( 'type' => array(), 'media' => array(), 'scoped' => array(), ), ); echo wp_kses( $meta_html, $allowed_html ); echo PHP_EOL . '' . PHP_EOL . PHP_EOL; endif; } /** * Output the CSS to include the icon font. * * Note: This is done in the header rather than in a CSS file to * avoid having the fonts called from a CDN, 95% of which do not * support the necessary mime & cross-origin access types to deliver them. * * @since 1.0.0 * @since 4.0.0 | 21 FEB 2020 | Added font-display:block * @access public * @param array $info An array of information about the post * @return array $info The modified array */ public function output_font_css( $meta_html ) { /** * The var $meta_html is passed to both string and array filters. The * solution is to re-wire those filters appropriately. This is the patch. */ if ( is_array( $meta_html ) ) { return $meta_html; } /** * This ensures that the icon font CSS that gets compiled below will * only be generated one time. If it's already been generated and exists * in this string, then bail out. */ if ( ! empty( $meta_html ) && strpos( $meta_html, 'font-family: "sw-icon-font"' ) ) : return $meta_html; endif; /** * If, for some reason, we have something other than a string here, * convert it into a string and then proceed as planned. */ if ( false === is_string( $meta_html ) ) { $meta_html = ''; } $style = ''; /** * If we are in the admin area, then we need to echo this string * directly to the screen. Otherwise, we're going to return the string * so that it will get output via the header hook. */ if ( true === is_admin() ) { echo wp_kses( $style, array( 'style' => array() ) ); } else { if ( empty( $meta_html ) ) : $meta_html = ''; endif; $meta_html .= $style; } return $meta_html; } }