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val].
*
* @access private
* @since 3.0.35
* @var array
*/
private $vars = array();
/**
* Constructor
*
* @access protected
* @since 3.0.28
*/
protected function __construct() {
add_action( 'init', array( $this, 'populate_vars' ) );
add_action( 'wp_head', array( $this, 'the_style' ), 999 );
add_action( 'admin_head', array( $this, 'the_style' ), 999 );
add_action( 'customize_preview_init', array( $this, 'postmessage' ) );
}
/**
* Gets an instance of this object.
* Prevents duplicate instances which avoid artefacts and improves performance.
*
* @static
* @access public
* @since 3.0.28
* @return object
*/
public static function get_instance() {
if ( ! self::$instance ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Populates the $vars property of this object.
*
* @access public
* @since 3.0.35
* @return void
*/
public function populate_vars() {
// Get an array of all fields.
$fields = Kirki::$fields;
foreach ( $fields as $id => $args ) {
if ( ! isset( $args['css_vars'] ) || empty( $args['css_vars'] ) ) {
continue;
}
$val = Kirki_Values::get_value( $args['kirki_config'], $id );
if ( isset( $args['type'] ) && in_array( $args['type'], array( 'typography', 'kirki-typography' ), true ) ) {
if ( isset( $val['font-weight'] ) && 'regular' === $val['font-weight'] ) {
$val['font-weight'] = '400';
}
}
foreach ( $args['css_vars'] as $css_var ) {
if ( isset( $css_var[2] ) && is_array( $val ) && isset( $val[ $css_var[2] ] ) ) {
$this->vars[ $css_var[0] ] = str_replace( '$', $val[ $css_var[2] ], $css_var[1] );
} else {
$this->vars[ $css_var[0] ] = str_replace( '$', $val, $css_var[1] );
}
}
}
}
/**
* Add styles in .
*
* @access public
* @since 3.0.28
* @return void
*/
public function the_style() {
if ( empty( $this->vars ) ) {
return;
}
echo '';
}
/**
* Get an array of all the variables.
*
* @access public
* @since 3.0.35
* @return array
*/
public function get_vars() {
return $this->vars;
}
/**
* Enqueues the script that handles postMessage
* and adds variables to it using the wp_localize_script function.
* The rest is handled via JS.
*
* @access public
* @since 3.0.28
* @return void
*/
public function postmessage() {
wp_enqueue_script( 'kirki_auto_css_vars', trailingslashit( Kirki::$url ) . 'modules/css-vars/script.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['css_vars'] ) && ! empty( $field['css_vars'] ) ) {
$data[] = $field;
}
}
wp_localize_script( 'kirki_auto_css_vars', 'kirkiCssVarFields', $data );
}
}