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Alexander Agnarson 2020-03-11 14:44:42 +01:00
commit b0607606ae
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functions/kirki/modules/postmessage/class-kirki-modules-postmessage.php Normal file
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<?php
/**
* Automatic postMessage scripts calculation for Kirki controls.
*
* @package Kirki
* @category Modules
* @author Ari Stathopoulos (@aristath)
* @copyright Copyright (c) 2019, Ari Stathopoulos (@aristath)
* @license https://opensource.org/licenses/MIT
* @since 3.0.0
*/
// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Adds styles to the customizer.
*/
class Kirki_Modules_PostMessage {
/**
* The object instance.
*
* @static
* @access private
* @since 3.0.0
* @var object
*/
private static $instance;
/**
* Constructor.
*
* @access protected
* @since 3.0.0
*/
protected function __construct() {
add_action( 'customize_preview_init', array( $this, 'postmessage' ) );
}
/**
* Gets an instance of this object.
* Prevents duplicate instances which avoid artefacts and improves performance.
*
* @static
* @access public
* @since 3.0.0
* @return object
*/
public static function get_instance() {
if ( ! self::$instance ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Enqueues the postMessage script
* and adds variables to it using the wp_localize_script function.
* The rest is handled via JS.
*/
public function postmessage() {
wp_enqueue_script( 'kirki_auto_postmessage', trailingslashit( Kirki::$url ) . 'modules/postmessage/postmessage.js', array( 'jquery', 'customize-preview' ), KIRKI_VERSION, true );
$fields = Kirki::$fields;
$data = array();
foreach ( $fields as $field ) {
if ( isset( $field['transport'] ) && 'postMessage' === $field['transport'] && isset( $field['js_vars'] ) && ! empty( $field['js_vars'] ) && is_array( $field['js_vars'] ) && isset( $field['settings'] ) ) {
$data[] = $field;
}
}
wp_localize_script( 'kirki_auto_postmessage', 'kirkiPostMessageFields', $data );
$extras = apply_filters( 'kirki_postmessage_script', false );
if ( $extras ) {
wp_add_inline_script( 'kirki_auto_postmessage', $extras, 'after' );
}
}
}