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Alexander Agnarson
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334
functions/kirki/modules/css/class-kirki-modules-css.php
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334
functions/kirki/modules/css/class-kirki-modules-css.php
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<?php
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/**
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* Handles the CSS Output of fields.
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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 https://opensource.org/licenses/MIT
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* @since 3.0.0
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*/
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/**
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* The Kirki_Modules_CSS object.
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*/
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class Kirki_Modules_CSS {
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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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* Whether we've already processed this or not.
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*
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* @access public
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* @var bool
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*/
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public $processed = false;
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/**
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* The CSS array
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*
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* @access public
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* @var array
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*/
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public static $css_array = array();
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/**
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* Set to true if you want to use the AJAX method.
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*
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* @access public
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* @var bool
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*/
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public static $ajax = false;
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/**
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* The Kirki_CSS_To_File 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 $css_to_file;
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/**
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* Should we enqueue font-awesome?
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*
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* @static
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* @access protected
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* @since 3.0.26
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* @var bool
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*/
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protected static $enqueue_fa = false;
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/**
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* Constructor
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*
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* @access protected
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*/
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protected function __construct() {
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$class_files = array(
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'Kirki_CSS_To_File' => '/class-kirki-css-to-file.php',
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'Kirki_Modules_CSS_Generator' => '/class-kirki-modules-css-generator.php',
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'Kirki_Output' => '/class-kirki-output.php',
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'Kirki_Output_Field_Background' => '/field/class-kirki-output-field-background.php',
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'Kirki_Output_Field_Image' => '/field/class-kirki-output-field-image.php',
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'Kirki_Output_Field_Multicolor' => '/field/class-kirki-output-field-multicolor.php',
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'Kirki_Output_Field_Dimensions' => '/field/class-kirki-output-field-dimensions.php',
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'Kirki_Output_Field_Typography' => '/field/class-kirki-output-field-typography.php',
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'Kirki_Output_Property' => '/property/class-kirki-output-property.php',
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'Kirki_Output_Property_Background_Image' => '/property/class-kirki-output-property-background-image.php',
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'Kirki_Output_Property_Background_Position' => '/property/class-kirki-output-property-background-position.php',
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'Kirki_Output_Property_Font_Family' => '/property/class-kirki-output-property-font-family.php',
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);
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foreach ( $class_files as $class_name => $file ) {
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if ( ! class_exists( $class_name ) ) {
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include_once wp_normalize_path( dirname( __FILE__ ) . $file );
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}
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}
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add_action( 'init', array( $this, 'init' ) );
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}
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/**
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* Gets an instance of this object.
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* Prevents duplicate instances which avoid artefacts and improves performance.
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*
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* @static
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* @access public
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* @since 3.0.0
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* @return object
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*/
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public static function get_instance() {
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if ( ! self::$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.
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*
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* @access public
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*/
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public function init() {
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global $wp_customize;
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Kirki_Modules_Webfonts::get_instance();
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$config = apply_filters( 'kirki_config', array() );
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$priority = 999;
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if ( isset( $config['styles_priority'] ) ) {
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$priority = absint( $config['styles_priority'] );
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}
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// Allow completely disabling Kirki CSS output.
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if ( ( defined( 'KIRKI_NO_OUTPUT' ) && true === KIRKI_NO_OUTPUT ) || ( isset( $config['disable_output'] ) && true === $config['disable_output'] ) ) {
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return;
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}
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$method = apply_filters( 'kirki_dynamic_css_method', 'inline' );
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if ( $wp_customize ) {
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// If we're in the customizer, load inline no matter what.
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add_action( 'wp_enqueue_scripts', array( $this, 'inline_dynamic_css' ), $priority );
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add_action( 'enqueue_block_editor_assets', array( $this, 'inline_dynamic_css' ), $priority );
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// If we're using file method, on save write the new styles.
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if ( 'file' === $method ) {
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$this->css_to_file = new Kirki_CSS_To_File();
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add_action( 'customize_save_after', array( $this->css_to_file, 'write_file' ) );
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}
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return;
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}
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if ( 'file' === $method ) {
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// Attempt to write the CSS to file.
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$this->css_to_file = new Kirki_CSS_To_File();
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// If we succesd, load this file.
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$failed = get_transient( 'kirki_css_write_to_file_failed' );
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// If writing CSS to file hasn't failed, just enqueue this file.
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if ( ! $failed ) {
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add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_compiled_file' ), $priority );
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return;
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}
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}
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// If we are in the customizer, load CSS using inline-styles.
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// If we are in the frontend AND self::$ajax is true, then load dynamic CSS using AJAX.
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if ( ( true === self::$ajax ) || ( isset( $config['inline_css'] ) && false === $config['inline_css'] ) ) {
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add_action( 'wp_enqueue_scripts', array( $this, 'frontend_styles' ), $priority );
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add_action( 'wp_ajax_kirki_dynamic_css', array( $this, 'ajax_dynamic_css' ) );
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add_action( 'wp_ajax_nopriv_kirki_dynamic_css', array( $this, 'ajax_dynamic_css' ) );
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return;
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}
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// If we got this far then add styles inline.
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add_action( 'wp_enqueue_scripts', array( $this, 'inline_dynamic_css' ), $priority );
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// Admin styles, adds Gutenberg compatibility.
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add_action( 'admin_enqueue_scripts', array( $this, 'inline_dynamic_css' ), $priority );
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}
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/**
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* Enqueues compiled CSS file.
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*
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* @access public
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* @since 3.0.0
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*/
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public function enqueue_compiled_file() {
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wp_enqueue_style( 'kirki-styles', $this->css_to_file->get_url(), array(), $this->css_to_file->get_timestamp() );
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}
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/**
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* Adds inline styles.
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*
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* @access public
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*/
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public function inline_dynamic_css() {
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$configs = Kirki::$config;
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if ( ! $this->processed ) {
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foreach ( $configs as $config_id => $args ) {
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if ( isset( $args['disable_output'] ) && true === $args['disable_output'] ) {
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continue;
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}
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$styles = self::loop_controls( $config_id );
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$styles = apply_filters( "kirki_{$config_id}_dynamic_css", $styles );
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if ( ! empty( $styles ) ) {
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$stylesheet = apply_filters( "kirki_{$config_id}_stylesheet", false );
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if ( $stylesheet ) {
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wp_add_inline_style( $stylesheet, $styles );
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continue;
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}
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wp_enqueue_style( 'kirki-styles-' . $config_id, trailingslashit( Kirki::$url ) . 'assets/css/kirki-styles.css', array(), KIRKI_VERSION );
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wp_add_inline_style( 'kirki-styles-' . $config_id, $styles );
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}
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}
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$this->processed = true;
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}
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if ( self::$enqueue_fa && apply_filters( 'kirki_load_fontawesome', true ) ) {
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wp_enqueue_script( 'kirki-fontawesome-font', 'https://use.fontawesome.com/30858dc40a.js', array(), '4.0.7', true );
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}
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}
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/**
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* Get the dynamic-css.php file
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*
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* @access public
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*/
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public function ajax_dynamic_css() {
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require wp_normalize_path( Kirki::$path . '/modules/css/dynamic-css.php' );
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exit;
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}
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/**
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* Enqueues the ajax stylesheet.
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*
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* @access public
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*/
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public function frontend_styles() {
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wp_enqueue_style( 'kirki-styles-php', admin_url( 'admin-ajax.php' ) . '?action=kirki_dynamic_css', array(), KIRKI_VERSION );
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}
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/**
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* Loop through all fields and create an array of style definitions.
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*
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* @static
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* @access public
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* @param string $config_id The configuration ID.
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*/
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public static function loop_controls( $config_id ) {
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// Get an instance of the Kirki_Modules_CSS_Generator class.
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// This will make sure google fonts and backup fonts are loaded.
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Kirki_Modules_CSS_Generator::get_instance();
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$fields = Kirki::$fields;
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$css = array();
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// Early exit if no fields are found.
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if ( empty( $fields ) ) {
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return;
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}
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foreach ( $fields as $field ) {
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// Only process fields that belong to $config_id.
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if ( $config_id !== $field['kirki_config'] ) {
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continue;
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}
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if ( true === apply_filters( "kirki_{$config_id}_css_skip_hidden", true ) ) {
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// Only continue if field dependencies are met.
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if ( ! empty( $field['required'] ) ) {
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$valid = true;
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foreach ( $field['required'] as $requirement ) {
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if ( isset( $requirement['setting'] ) && isset( $requirement['value'] ) && isset( $requirement['operator'] ) ) {
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$controller_value = Kirki_Values::get_value( $config_id, $requirement['setting'] );
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if ( ! Kirki_Helper::compare_values( $controller_value, $requirement['value'], $requirement['operator'] ) ) {
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$valid = false;
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}
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}
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}
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if ( ! $valid ) {
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continue;
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}
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}
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}
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// Only continue if $field['output'] is set.
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if ( isset( $field['output'] ) && ! empty( $field['output'] ) ) {
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$css = Kirki_Helper::array_replace_recursive( $css, Kirki_Modules_CSS_Generator::css( $field ) );
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// Add the globals.
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if ( isset( self::$css_array[ $config_id ] ) && ! empty( self::$css_array[ $config_id ] ) ) {
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Kirki_Helper::array_replace_recursive( $css, self::$css_array[ $config_id ] );
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}
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}
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}
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$css = apply_filters( "kirki_{$config_id}_styles", $css );
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if ( is_array( $css ) ) {
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return Kirki_Modules_CSS_Generator::styles_parse( Kirki_Modules_CSS_Generator::add_prefixes( $css ) );
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}
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}
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/**
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* Runs when we're adding a font-awesome field to allow enqueueing the
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* fontawesome script on the frontend.
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*
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* @static
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* @since 3.0.26
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* @access public
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* @return void
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*/
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public static function add_fontawesome_script() {
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self::$enqueue_fa = true;
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}
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/**
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* Check if FontAwesome should be loaded.
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*
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* @static
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* @since 3.0.35
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* @access public
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* @return void
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*/
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public static function get_enqueue_fa() {
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return self::$enqueue_fa;
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}
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}
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