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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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273
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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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277
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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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284
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} |
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285
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286
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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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292
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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( $field ) ); |
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295
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296
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// Add the globals. |
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297
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if ( isset( self::$css_array[ $config_id ] ) && ! empty( self::$css_array[ $config_id ] ) ) { |
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Kirki_Helper::array_replace_recursive( $css, self::$css_array[ $config_id ] ); |
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} |
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} |
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301
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} |
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302
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303
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$css = apply_filters( "kirki_{$config_id}_styles", $css ); |
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304
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305
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if ( is_array( $css ) ) { |
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306
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return Kirki_Modules_CSS_Generator::styles_parse( Kirki_Modules_CSS_Generator::add_prefixes( $css ) ); |
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307
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} |
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308
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} |
|
309
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|
|
310
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|
|
/** |
|
311
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|
|
* Runs when we're adding a font-awesome field to allow enqueueing the |
|
312
|
|
|
* fontawesome script on the frontend. |
|
313
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|
* |
|
314
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|
* @static |
|
315
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|
|
* @since 3.0.26 |
|
316
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|
|
* @access public |
|
317
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|
|
* @return void |
|
318
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|
|
*/ |
|
319
|
|
|
public static function add_fontawesome_script() { |
|
320
|
|
|
self::$enqueue_fa = true; |
|
321
|
|
|
} |
|
322
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|
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|
|
323
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|
|
/** |
|
324
|
|
|
* Check if FontAwesome should be loaded. |
|
325
|
|
|
* |
|
326
|
|
|
* @static |
|
327
|
|
|
* @since 3.0.35 |
|
328
|
|
|
* @access public |
|
329
|
|
|
* @return void |
|
|
|
|
|
|
330
|
|
|
*/ |
|
331
|
|
|
public static function get_enqueue_fa() { |
|
332
|
|
|
return self::$enqueue_fa; |
|
333
|
|
|
} |
|
334
|
|
|
} |
|
335
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|
In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.