Initial commit

functions/kirki/modules/webfonts/class-kirki-modules-webfonts.php

@@ -0,0 +1,161 @@
+<?php
+/**
+ * Handles webfonts.
+ *
+ * @package     Kirki
+ * @category    Modules
+ * @author      Aristeides Stathopoulos
+ * @copyright   Copyright (c) 2017, Aristeides Stathopoulos
+ * @license    https://opensource.org/licenses/MIT
+ * @since       3.0.0
+ */
+
+// Exit if accessed directly.
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ * Adds script for tooltips.
+ */
+class Kirki_Modules_Webfonts {
+
+	/**
+	 * The object instance.
+	 *
+	 * @static
+	 * @access private
+	 * @since 3.0.0
+	 * @var object
+	 */
+	private static $instance;
+
+	/**
+	 * The Kirki_Fonts_Google object.
+	 *
+	 * @access protected
+	 * @since 3.0.0
+	 * @var object
+	 */
+	protected $fonts_google;
+
+	/**
+	 * The class constructor
+	 *
+	 * @access protected
+	 * @since 3.0.0
+	 */
+	protected function __construct() {
+
+		include_once wp_normalize_path( dirname( __FILE__ ) . '/class-kirki-fonts.php' );
+		include_once wp_normalize_path( dirname( __FILE__ ) . '/class-kirki-fonts-google.php' );
+		include_once wp_normalize_path( dirname( __FILE__ ) . '/class-kirki-fonts-google-local.php' );
+
+		add_action( 'wp_loaded', array( $this, 'run' ) );
+
+	}
+
+	/**
+	 * Run on after_setup_theme.
+	 *
+	 * @access public
+	 * @since 3.0.0
+	 */
+	public function run() {
+		$this->fonts_google = Kirki_Fonts_Google::get_instance();
+		$this->init();
+	}
+
+	/**
+	 * Gets an instance of this object.
+	 * Prevents duplicate instances which avoid artefacts and improves performance.
+	 *
+	 * @static
+	 * @access public
+	 * @since 3.0.0
+	 * @return object
+	 */
+	public static function get_instance() {
+		if ( ! self::$instance ) {
+			self::$instance = new self();
+		}
+		return self::$instance;
+	}
+
+	/**
+	 * Init other objects depending on the method we'll be using.
+	 *
+	 * @access protected
+	 * @since 3.0.0
+	 */
+	protected function init() {
+		foreach ( array_keys( Kirki::$config ) as $config_id ) {
+			$method    = $this->get_method( $config_id );
+			$classname = 'Kirki_Modules_Webfonts_' . ucfirst( $method );
+			new $classname( $config_id, $this, $this->fonts_google );
+		}
+		new Kirki_Modules_Webfonts_Local( $this, $this->fonts_google );
+	}
+
+	/**
+	 * Get the method we're going to use.
+	 *
+	 * @access public
+	 * @since 3.0.0
+	 * @return string
+	 */
+	public function get_method() {
+
+		// Figure out which method to use.
+		$method = apply_filters( 'kirki_googlefonts_load_method', 'async' );
+
+		// Fallback to 'async' if value is invalid.
+		if ( 'async' !== $method && 'embed' !== $method && 'link' !== $method ) {
+			$method = 'async';
+		}
+
+		$classname = 'Kirki_Modules_Webfonts_' . ucfirst( $method );
+		if ( ! class_exists( $classname ) ) {
+			$method = 'async';
+		}
+
+		// Force using the JS method while in the customizer.
+		// This will help us work-out the live-previews for typography fields.
+		// If we're not in the customizer use the defined method.
+		return ( is_customize_preview() ) ? 'async' : $method;
+	}
+
+	/**
+	 * Goes through all our fields and then populates the $this->fonts property.
+	 *
+	 * @access public
+	 * @param string $config_id The config-ID.
+	 */
+	public function loop_fields( $config_id ) {
+		foreach ( Kirki::$fields as $field ) {
+			if ( isset( $field['kirki_config'] ) && $config_id !== $field['kirki_config'] ) {
+				continue;
+			}
+			if ( true === apply_filters( "kirki_{$config_id}_webfonts_skip_hidden", true ) ) {
+				// Only continue if field dependencies are met.
+				if ( ! empty( $field['required'] ) ) {
+					$valid = true;
+
+					foreach ( $field['required'] as $requirement ) {
+						if ( isset( $requirement['setting'] ) && isset( $requirement['value'] ) && isset( $requirement['operator'] ) ) {
+							$controller_value = Kirki_Values::get_value( $config_id, $requirement['setting'] );
+							if ( ! Kirki_Helper::compare_values( $controller_value, $requirement['value'], $requirement['operator'] ) ) {
+								$valid = false;
+							}
+						}
+					}
+
+					if ( ! $valid ) {
+						continue;
+					}
+				}
+			}
+			$this->fonts_google->generate_google_font( $field );
+		}
+	}
+}