<?php
/**
 * Storefront Customizer Class
 *
 * @author   WooThemes
 * @since    2.0.0
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'Storefront_Customizer' ) ) :

class Storefront_Customizer {

	/**
	 * Setup class.
	 *
	 * @since 1.0
	 */
	public function __construct() {
		add_action( 'customize_preview_init', array( $this, 'customize_preview_js' ) );
		add_action( 'customize_register', array( $this, 'customize_register' ) );
		add_filter( 'body_class', array( $this, 'layout_class' ) );
		add_action( 'wp_enqueue_scripts', array( $this, 'add_customizer_css' ), 130 );
		add_action( 'after_setup_theme', array( $this, 'custom_header_setup' ) );
		add_action( 'customize_controls_print_styles', array( $this, 'customizer_custom_control_css' ) );
	}

	/**
	 * Setup the WordPress core custom header feature.
	 *
	 * @uses storefront_header_style()
	 * @uses storefront_admin_header_style()
	 * @uses storefront_admin_header_image()
	 */
	public function custom_header_setup() {
		add_theme_support( 'custom-header', apply_filters( 'storefront_custom_header_args', array(
			'default-image'          => '',
			'header-text'     		 => false,
			'width'                  => 1950,
			'height'                 => 500,
			'flex-width'             => true,
			'flex-height'            => true,
		) ) );
	}

	/**
	 * Add postMessage support for site title and description for the Theme Customizer along with several other settings.
	 *
	 * @param WP_Customize_Manager $wp_customize Theme Customizer object.
	 * @since  1.0.0
	 */
	public function customize_register( $wp_customize ) {
		$wp_customize->get_setting( 'blogname' )->transport         	= 'postMessage';
		$wp_customize->get_setting( 'header_textcolor' )->transport 	= 'postMessage';

		// Move background color setting alongside background image
		$wp_customize->get_control( 'background_color' )->section 	= 'background_image';
		$wp_customize->get_control( 'background_color' )->priority 	= 20;

		// Change background image section title & priority
		$wp_customize->get_section( 'background_image' )->title 	= __( 'Background', 'storefront' );
		$wp_customize->get_section( 'background_image' )->priority 	= 30;

		// Change header image section title & priority
		$wp_customize->get_section( 'header_image' )->title 		= __( 'Header', 'storefront' );
		$wp_customize->get_section( 'header_image' )->priority 		= 35;

		/**
		 * Custom controls
		 */
		require_once dirname( __FILE__ ) . '/class-storefront-customizer-control-radio-image.php';
		require_once dirname( __FILE__ ) . '/class-storefront-customizer-control-arbitrary.php';

		if ( apply_filters( 'storefront_customizer_more', true ) ) {
			require_once dirname( __FILE__ ) . '/class-storefront-customizer-control-more.php';
		}

		/**
		 * Add the typography section
	     */
		$wp_customize->add_section( 'storefront_typography' , array(
			'title'      => __( 'Typography', 'storefront' ),
			'priority'   => 45,
		) );

		/**
		 * Heading color
		 */
		$wp_customize->add_setting( 'storefront_heading_color', array(
			'default'           => apply_filters( 'storefront_default_heading_color', '#484c51' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_heading_color', array(
			'label'	   => __( 'Heading color', 'storefront' ),
			'section'  => 'storefront_typography',
			'settings' => 'storefront_heading_color',
			'priority' => 20,
		) ) );

		/**
		 * Text Color
		 */
		$wp_customize->add_setting( 'storefront_text_color', array(
			'default'           => apply_filters( 'storefront_default_text_color', '#60646c' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_text_color', array(
			'label'		=> __( 'Text color', 'storefront' ),
			'section'	=> 'storefront_typography',
			'settings'	=> 'storefront_text_color',
			'priority'	=> 30,
		) ) );

		/**
		 * Accent Color
		 */
		$wp_customize->add_setting( 'storefront_accent_color', array(
			'default'           => apply_filters( 'storefront_default_accent_color', '#96588a' ),
			'sanitize_callback' => 'sanitize_hex_color',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_accent_color', array(
			'label'	   => __( 'Link / accent color', 'storefront' ),
			'section'  => 'storefront_typography',
			'settings' => 'storefront_accent_color',
			'priority' => 40,
		) ) );

		/**
		 * Logo
		 */
		if ( ! class_exists( 'Jetpack' ) ) {
			$wp_customize->add_control( new Arbitrary_Storefront_Control( $wp_customize, 'storefront_logo_heading', array(
				'section'  		=> 'header_image',
				'type' 			=> 'heading',
				'label'			=> __( 'Logo', 'storefront' ),
				'priority' 		=> 2,
			) ) );

			$wp_customize->add_control( new Arbitrary_Storefront_Control( $wp_customize, 'storefront_logo_info', array(
				'section'  		=> 'header_image',
				'type' 			=> 'text',
				'description'	=> sprintf( __( 'Looking to add a logo? Install the %sJetpack%s plugin! %sRead more%s.', 'storefront' ), '<a href="https://wordpress.org/plugins/jetpack/">', '</a>', '<a href="http://docs.woothemes.com/document/storefront-faq/#section-1">', '</a>' ),
				'priority' 		=> 3,
			) ) );

			$wp_customize->add_control( new Arbitrary_Storefront_Control( $wp_customize, 'storefront_logo_divider_after', array(
				'section'  		=> 'header_image',
				'type' 			=> 'divider',
				'priority' 		=> 4,
			) ) );
		}

		$wp_customize->add_control( new Arbitrary_Storefront_Control( $wp_customize, 'storefront_header_image_heading', array(
			'section'  		=> 'header_image',
			'type' 			=> 'heading',
			'label'			=> __( 'Header background image', 'storefront' ),
			'priority' 		=> 6,
		) ) );

		/**
		 * Header Background
		 */
		$wp_customize->add_setting( 'storefront_header_background_color', array(
			'default'           => apply_filters( 'storefront_default_header_background_color', '#2c2d33' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_header_background_color', array(
			'label'	   => __( 'Background color', 'storefront' ),
			'section'  => 'header_image',
			'settings' => 'storefront_header_background_color',
			'priority' => 15,
		) ) );

		/**
		 * Header text color
		 */
		$wp_customize->add_setting( 'storefront_header_text_color', array(
			'default'           => apply_filters( 'storefront_default_header_text_color', '#9aa0a7' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_header_text_color', array(
			'label'	   => __( 'Text color', 'storefront' ),
			'section'  => 'header_image',
			'settings' => 'storefront_header_text_color',
			'priority' => 20,
		) ) );

		/**
		 * Header link color
		 */
		$wp_customize->add_setting( 'storefront_header_link_color', array(
			'default'           => apply_filters( 'storefront_default_header_link_color', '#ffffff' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_header_link_color', array(
			'label'	   => __( 'Link color', 'storefront' ),
			'section'  => 'header_image',
			'settings' => 'storefront_header_link_color',
			'priority' => 30,
		) ) );

		/**
		 * Footer section
		 */
		$wp_customize->add_section( 'storefront_footer' , array(
			'title'      	=> __( 'Footer', 'storefront' ),
			'priority'   	=> 40,
			'description' 	=> __( 'Customise the look & feel of your web site footer.', 'storefront' ),
		) );

		/**
		 * Footer Background
		 */
		$wp_customize->add_setting( 'storefront_footer_background_color', array(
			'default'           => apply_filters( 'storefront_default_footer_background_color', '#f3f3f3' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_footer_background_color', array(
			'label'	   	=> __( 'Background color', 'storefront' ),
			'section'  	=> 'storefront_footer',
			'settings' 	=> 'storefront_footer_background_color',
			'priority'	=> 10,
		) ) );

		/**
		 * Footer heading color
		 */
		$wp_customize->add_setting( 'storefront_footer_heading_color', array(
			'default'           => apply_filters( 'storefront_default_footer_heading_color', '#494c50' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport' 		=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_footer_heading_color', array(
			'label'	   	=> __( 'Heading color', 'storefront' ),
			'section'  	=> 'storefront_footer',
			'settings' 	=> 'storefront_footer_heading_color',
			'priority'	=> 20,
		) ) );

		/**
		 * Footer text color
		 */
		$wp_customize->add_setting( 'storefront_footer_text_color', array(
			'default'           => apply_filters( 'storefront_default_footer_text_color', '#61656b' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_footer_text_color', array(
			'label'	   	=> __( 'Text color', 'storefront' ),
			'section'  	=> 'storefront_footer',
			'settings' 	=> 'storefront_footer_text_color',
			'priority'	=> 30,
		) ) );

		/**
		 * Footer link color
		 */
		$wp_customize->add_setting( 'storefront_footer_link_color', array(
			'default'           => apply_filters( 'storefront_default_footer_link_color', '#96588a' ),
			'sanitize_callback' => 'sanitize_hex_color',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_footer_link_color', array(
			'label'	   	=> __( 'Link color', 'storefront' ),
			'section'  	=> 'storefront_footer',
			'settings' 	=> 'storefront_footer_link_color',
			'priority'	=> 40,
		) ) );


		/**
		 * Buttons section
		 */
		$wp_customize->add_section( 'storefront_buttons' , array(
			'title'      	=> __( 'Buttons', 'storefront' ),
			'priority'   	=> 45,
			'description' 	=> __( 'Customise the look & feel of your web site buttons.', 'storefront' ),
		) );

		/**
		 * Button background color
		 */
		$wp_customize->add_setting( 'storefront_button_background_color', array(
			'default'           => apply_filters( 'storefront_default_button_background_color', '#60646c' ),
			'sanitize_callback' => 'sanitize_hex_color',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_button_background_color', array(
			'label'	   => __( 'Background color', 'storefront' ),
			'section'  => 'storefront_buttons',
			'settings' => 'storefront_button_background_color',
			'priority' => 10,
		) ) );

		/**
		 * Button text color
		 */
		$wp_customize->add_setting( 'storefront_button_text_color', array(
			'default'           => apply_filters( 'storefront_default_button_text_color', '#ffffff' ),
			'sanitize_callback' => 'sanitize_hex_color',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_button_text_color', array(
			'label'	   => __( 'Text color', 'storefront' ),
			'section'  => 'storefront_buttons',
			'settings' => 'storefront_button_text_color',
			'priority' => 20,
		) ) );

		/**
		 * Button alt background color
		 */
		$wp_customize->add_setting( 'storefront_button_alt_background_color', array(
			'default'           => apply_filters( 'storefront_default_button_alt_background_color', '#96588a' ),
			'sanitize_callback' => 'sanitize_hex_color',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_button_alt_background_color', array(
			'label'	   => __( 'Alternate button background color', 'storefront' ),
			'section'  => 'storefront_buttons',
			'settings' => 'storefront_button_alt_background_color',
			'priority' => 30,
		) ) );

		/**
		 * Button alt text color
		 */
		$wp_customize->add_setting( 'storefront_button_alt_text_color', array(
			'default'           => apply_filters( 'storefront_default_button_alt_text_color', '#ffffff' ),
			'sanitize_callback' => 'sanitize_hex_color',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'storefront_button_alt_text_color', array(
			'label'	   => __( 'Alternate button text color', 'storefront' ),
			'section'  => 'storefront_buttons',
			'settings' => 'storefront_button_alt_text_color',
			'priority' => 40,
		) ) );

		/**
		 * Layout
		 */
		$wp_customize->add_section( 'storefront_layout' , array(
			'title'      	=> __( 'Layout', 'storefront' ),
			'priority'   	=> 50,
		) );

		$wp_customize->add_setting( 'storefront_layout', array(
			'default'    		=> apply_filters( 'storefront_default_layout', $layout = is_rtl() ? 'left' : 'right' ),
			'sanitize_callback' => 'storefront_sanitize_layout',
		) );

		$wp_customize->add_control( new Storefront_Custom_Radio_Image_Control( $wp_customize, 'storefront_layout', array(
					'settings'		=> 'storefront_layout',
					'section'		=> 'storefront_layout',
					'label'			=> __( 'General Layout', 'storefront' ),
					'priority'		=> 1,
					'choices'		=> array(
						'right' 		=> get_template_directory_uri() . '/assets/images/customizer/controls/2cr.png',
						'left' 			=> get_template_directory_uri() . '/assets/images/customizer/controls/2cl.png',
					)
		) ) );

		/**
		 * More
		 */
		if ( apply_filters( 'storefront_customizer_more', true ) ) {
			$wp_customize->add_section( 'storefront_more' , array(
				'title'      	=> __( 'More', 'storefront' ),
				'priority'   	=> 999,
			) );

			$wp_customize->add_setting( 'storefront_more', array(
				'default'    		=> null,
				'sanitize_callback' => 'sanitize_text_field',
			) );

			$wp_customize->add_control( new More_Storefront_Control( $wp_customize, 'storefront_more', array(
				'label'    => __( 'Looking for more options?', 'storefront' ),
				'section'  => 'storefront_more',
				'settings' => 'storefront_more',
				'priority' => 1,
			) ) );
		}
	}

	/**
	 * Add CSS in <head> for styles handled by the theme customizer
	 *
	 * @since 1.0.0
	 */
	public function add_customizer_css() {
		$accent_color 					= get_theme_mod( 'storefront_accent_color', apply_filters( 'storefront_default_accent_color', '#96588a' ) );
		$header_background_color 		= get_theme_mod( 'storefront_header_background_color', apply_filters( 'storefront_default_header_background_color', '#2c2d33' ) );
		$header_link_color 				= get_theme_mod( 'storefront_header_link_color', apply_filters( 'storefront_default_header_link_color', '#ffffff' ) );
		$header_text_color 				= get_theme_mod( 'storefront_header_text_color', apply_filters( 'storefront_default_header_text_color', '#9aa0a7' ) );

		$footer_background_color 		= get_theme_mod( 'storefront_footer_background_color', apply_filters( 'storefront_default_footer_background_color', '#f3f3f3' ) );
		$footer_link_color 				= get_theme_mod( 'storefront_footer_link_color', apply_filters( 'storefront_default_footer_link_color', '#96588a' ) );
		$footer_heading_color 			= get_theme_mod( 'storefront_footer_heading_color', apply_filters( 'storefront_default_footer_heading_color', '#494c50' ) );
		$footer_text_color 				= get_theme_mod( 'storefront_footer_text_color', apply_filters( 'storefront_default_footer_text_color', '#61656b' ) );

		$text_color 					= get_theme_mod( 'storefront_text_color', apply_filters( 'storefront_default_text_color', '#60646c' ) );
		$heading_color 					= get_theme_mod( 'storefront_heading_color', apply_filters( 'storefront_default_heading_color', '#484c51' ) );
		$button_background_color 		= get_theme_mod( 'storefront_button_background_color', apply_filters( 'storefront_default_button_background_color', '#60646c' ) );
		$button_text_color 				= get_theme_mod( 'storefront_button_text_color', apply_filters( 'storefront_default_button_text_color', '#ffffff' ) );
		$button_alt_background_color 	= get_theme_mod( 'storefront_button_alt_background_color', apply_filters( 'storefront_default_button_alt_background_color', '#96588a' ) );
		$button_alt_text_color 			= get_theme_mod( 'storefront_button_alt_text_color', apply_filters( 'storefront_default_button_alt_text_color', '#ffffff' ) );

		$brighten_factor 				= apply_filters( 'storefront_brighten_factor', 25 );
		$darken_factor 					= apply_filters( 'storefront_darken_factor', -25 );

		$style 							= '
		.main-navigation ul li a,
		.site-title a,
		ul.menu li a,
		.site-branding h1 a {
			color: ' . $header_link_color . ';
		}

		.main-navigation ul li a:hover,
		.main-navigation ul li:hover > a,
		.site-title a:hover,
		a.cart-contents:hover,
		.site-header-cart .widget_shopping_cart a:hover,
		.site-header-cart:hover > li > a {
			color: ' . storefront_adjust_color_brightness( $header_link_color, -100 ) . ';
		}

		.site-header,
		.main-navigation ul ul,
		.secondary-navigation ul ul,
		.main-navigation ul.menu > li.menu-item-has-children:after,
		.secondary-navigation ul.menu ul,
		.main-navigation ul.menu ul,
		.main-navigation ul.nav-menu ul {
			background-color: ' . $header_background_color . ';
		}

		p.site-description,
		ul.menu li.current-menu-item > a,
		.site-header {
			color: ' . $header_text_color . ';
		}

		h1, h2, h3, h4, h5, h6 {
			color: ' . $heading_color . ';
		}

		.hentry .entry-header {
			border-color: ' . $heading_color . ';
		}

		.widget h1 {
			border-bottom-color: ' . $heading_color . ';
		}

		body,
		.secondary-navigation a,
		.widget-area .widget a,
		.onsale,
		#comments .comment-list .reply a,
		.pagination .page-numbers li .page-numbers:not(.current), .woocommerce-pagination .page-numbers li .page-numbers:not(.current) {
			color: ' . $text_color . ';
		}

		a  {
			color: ' . $accent_color . ';
		}

		a:focus,
		.button:focus,
		.button.alt:focus,
		.button.added_to_cart:focus,
		.button.wc-forward:focus,
		button:focus,
		input[type="button"]:focus,
		input[type="reset"]:focus,
		input[type="submit"]:focus {
			outline-color: ' . $accent_color . ';
		}

		button, input[type="button"], input[type="reset"], input[type="submit"], .button, .added_to_cart, .widget-area .widget a.button, .site-header-cart .widget_shopping_cart a.button {
			background-color: ' . $button_background_color . ';
			border-color: ' . $button_background_color . ';
			color: ' . $button_text_color . ';
		}

		button:hover, input[type="button"]:hover, input[type="reset"]:hover, input[type="submit"]:hover, .button:hover, .added_to_cart:hover, .widget-area .widget a.button:hover, .site-header-cart .widget_shopping_cart a.button:hover {
			background-color: ' . storefront_adjust_color_brightness( $button_background_color, $darken_factor ) . ';
			border-color: ' . storefront_adjust_color_brightness( $button_background_color, $darken_factor ) . ';
			color: ' . $button_text_color . ';
		}

		button.alt, input[type="button"].alt, input[type="reset"].alt, input[type="submit"].alt, .button.alt, .added_to_cart.alt, .widget-area .widget a.button.alt, .added_to_cart, .pagination .page-numbers li .page-numbers.current, .woocommerce-pagination .page-numbers li .page-numbers.current {
			background-color: ' . $button_alt_background_color . ';
			border-color: ' . $button_alt_background_color . ';
			color: ' . $button_alt_text_color . ';
		}

		button.alt:hover, input[type="button"].alt:hover, input[type="reset"].alt:hover, input[type="submit"].alt:hover, .button.alt:hover, .added_to_cart.alt:hover, .widget-area .widget a.button.alt:hover, .added_to_cart:hover {
			background-color: ' . storefront_adjust_color_brightness( $button_alt_background_color, $darken_factor ) . ';
			border-color: ' . storefront_adjust_color_brightness( $button_alt_background_color, $darken_factor ) . ';
			color: ' . $button_alt_text_color . ';
		}

		.site-footer {
			background-color: ' . $footer_background_color . ';
			color: ' . $footer_text_color . ';
		}

		.site-footer a:not(.button) {
			color: ' . $footer_link_color . ';
		}

		.site-footer h1, .site-footer h2, .site-footer h3, .site-footer h4, .site-footer h5, .site-footer h6 {
			color: ' . $footer_heading_color . ';
		}

		#order_review {
			background-color: ' . storefront_get_content_background_color() . ';
		}

		@media screen and ( min-width: 768px ) {
			.main-navigation ul.menu > li > ul {
				border-top-color: ' . $header_background_color . ';
			}

			.secondary-navigation ul.menu a:hover {
				color: ' . storefront_adjust_color_brightness( $header_text_color, $brighten_factor ) . ';
			}

			.main-navigation ul.menu ul {
				background-color: ' . $header_background_color . ';
			}

			.secondary-navigation ul.menu a {
				color: ' . $header_text_color . ';
			}
		}';

		$woocommerce_style 							= '
		a.cart-contents,
		.site-header-cart .widget_shopping_cart a {
			color: ' . $header_link_color . ';
		}

		.site-header-cart .widget_shopping_cart {
			background-color: ' . $header_background_color . ';
		}

		.woocommerce-tabs ul.tabs li.active a,
		ul.products li.product .price,
		.onsale {
			color: ' . $text_color . ';
		}

		.onsale {
			border-color: ' . $text_color . ';
		}

		.star-rating span:before,
		.widget-area .widget a:hover,
		.product_list_widget a:hover,
		.quantity .plus, .quantity .minus,
		p.stars a:hover:after,
		p.stars a:after,
		.star-rating span:before {
			color: ' . $accent_color . ';
		}

		.widget_price_filter .ui-slider .ui-slider-range,
		.widget_price_filter .ui-slider .ui-slider-handle {
			background-color: ' . $accent_color . ';
		}

		#order_review_heading, #order_review {
			border-color: ' . $accent_color . ';
		}

		@media screen and ( min-width: 768px ) {
			.site-header-cart .widget_shopping_cart,
			.site-header .product_list_widget li .quantity {
				color: ' . $header_text_color . ';
			}
		}';

		wp_add_inline_style( 'storefront-style', $style );
		wp_add_inline_style( 'storefront-woocommerce-style', $woocommerce_style );
	}

	/**
	 * Binds JS handlers to make Theme Customizer preview reload changes asynchronously.
	 *
	 * @since  1.0.0
	 */
	public function customize_preview_js() {
		wp_enqueue_script( 'storefront_customizer', get_template_directory_uri() . '/assets/js/customizer/customizer.min.js', array( 'customize-preview' ), '1.15', true );
	}

	/**
	 * Sanitizes choices (selects / radios)
	 * Checks that the input matches one of the available choices
	 *
	 * @since  1.3.0
	 */
    public function storefront_sanitize_choices( $input, $setting ) {
        // Ensure input is a slug.
        $input = sanitize_key( $input );

        // Get list of choices from the control associated with the setting.
        $choices = $setting->manager->get_control( $setting->id )->choices;

        // If the input is a valid key, return it; otherwise, return the default.
        return ( array_key_exists( $input, $choices ) ? $input : $setting->default );
    }

	/**
	 * Sanitizes the layout setting
	 *
	 * Ensures only array keys matching the original settings specified in add_control() are valid
	 *
	 * @since 1.0.3
	 */
    public function storefront_sanitize_layout( $input ) {
        $valid = array(
            'right' => 'Right',
            'left'  => 'Left',
            );

        if ( array_key_exists( $input, $valid ) ) {
            return $input;
        } else {
            return '';
        }
    }

	/**
	 * Checkbox sanitization callback.
	 *
	 * Sanitization callback for 'checkbox' type controls. This callback sanitizes `$checked`
	 * as a boolean value, either TRUE or FALSE.
	 *
	 * @param bool $checked Whether the checkbox is checked.
	 * @return bool Whether the checkbox is checked.
	 * @since  1.5.0
	 */
	public function storefront_sanitize_checkbox( $checked ) {
	    return (bool) $checked;
	}

	/**
	 * Layout classes
	 * Adds 'right-sidebar' and 'left-sidebar' classes to the body tag
	 * @param  array $classes current body classes
	 * @return string[]          modified body classes
	 * @since  1.0.0
	 */
	public function layout_class( $classes ) {
		$left_or_right = get_theme_mod( 'storefront_layout', apply_filters( 'storefront_default_layout', $layout = is_rtl() ? 'left' : 'right' ) );

		$classes[] = $left_or_right . '-sidebar';

		return $classes;
	}

	/**
	 * Add CSS for custom controls
	 *
	 * This function incorporates CSS from the Kirki Customizer Framework
	 *
	 * The Kirki Customizer Framework, Copyright Aristeides Stathopoulos (@aristath),
	 * is licensed under the terms of the GNU GPL, Version 2 (or later)
	 *
	 * @link https://github.com/reduxframework/kirki/
	 * @since  1.5.0
	 */
	public function customizer_custom_control_css() {
	    ?>
	    <style>
	    .customize-control-radio-image .image.ui-buttonset input[type=radio] {
	        height: auto;
	    }
	    .customize-control-radio-image .image.ui-buttonset label {
	        display: inline-block;
	        width: 48%;
	        padding: 1%;
	        box-sizing: border-box;
	    }
	    .customize-control-radio-image .image.ui-buttonset label.ui-state-active {
	        background: none;
	    }
	    .customize-control-radio-image .customize-control-radio-buttonset label {
	        background: #f7f7f7;
	        line-height: 35px;
	    }
	    .customize-control-radio-image label img {
	        opacity: 0.5;
	    }
	    #customize-controls .customize-control-radio-image label img {
	        height: auto;
	    }
	    .customize-control-radio-image label.ui-state-active img {
	        background: #dedede;
	        opacity: 1;
	    }
	    .customize-control-radio-image label.ui-state-hover img {
	        opacity: 1;
	        box-shadow: 0 0 0 3px #f6f6f6;
	    }
	    </style>
	    <?php
	}
}

endif;

return new Storefront_Customizer();