twentynineteen_customize_register( WP_Customize_Manager $wp_customize )

15function twentynineteen_customize_register( $wp_customize ) {16	$wp_customize->get_setting( 'blogname' )->transport         = 'postMessage';17	$wp_customize->get_setting( 'blogdescription' )->transport  = 'postMessage';18	$wp_customize->get_setting( 'header_textcolor' )->transport = 'postMessage';19 20	if ( isset( $wp_customize->selective_refresh ) ) {21		$wp_customize->selective_refresh->add_partial(22			'blogname',23			array(24				'selector'        => '.site-title a',25				'render_callback' => 'twentynineteen_customize_partial_blogname',26			)27		);28		$wp_customize->selective_refresh->add_partial(29			'blogdescription',30			array(31				'selector'        => '.site-description',32				'render_callback' => 'twentynineteen_customize_partial_blogdescription',33			)34		);35	}36 37	/**38	 * Primary color.39	 */40	$wp_customize->add_setting(41		'primary_color',42		array(43			'default'           => 'default',44			'transport'         => 'postMessage',45			'sanitize_callback' => 'twentynineteen_sanitize_color_option',46		)47	);48 49	$wp_customize->add_control(50		'primary_color',51		array(52			'type'     => 'radio',53			'label'    => __( 'Primary Color', 'twentynineteen' ),54			'choices'  => array(55				'default' => _x( 'Default', 'primary color', 'twentynineteen' ),56				'custom'  => _x( 'Custom', 'primary color', 'twentynineteen' ),57			),58			'section'  => 'colors',59			'priority' => 5,60		)61	);62 63	// Add primary color hue setting and control.64	$wp_customize->add_setting(65		'primary_color_hue',66		array(67			'default'           => 199,68			'transport'         => 'postMessage',69			'sanitize_callback' => 'absint',70		)71	);72 73	$wp_customize->add_control(74		new WP_Customize_Color_Control(75			$wp_customize,76			'primary_color_hue',77			array(78				'label'       => __( 'Custom Color', 'twentynineteen' ),79				'description' => __( 'Apply a custom color for buttons, links, featured images, etc.', 'twentynineteen' ),80				'section'     => 'colors',81				'mode'        => 'hue',82			)83		)84	);85 86	// Add image filter setting and control.87	$wp_customize->add_setting(88		'image_filter',89		array(90			'default'           => 1,91			'sanitize_callback' => 'absint',92			'transport'         => 'postMessage',93		)94	);