<?php
/**
 * Customizer Controls Init.
 *
 * @package     Kirki
 * @subpackage  Controls
 * @copyright   Copyright (c) 2017, Aristeides Stathopoulos
 * @license     http://opensource.org/licenses/https://opensource.org/licenses/MIT
 * @since       3.0.17
 */

/**
 * Controls.
 */
class Kirki_Controls {

	/**
	 * An array of templates to load.
	 *
	 * @access private
	 * @since 3.0.17
	 * @var array
	 */
	private $templates = array(
		'input-radio',
	);

	/**
	 * Path to controls views.
	 *
	 * @access private
	 * @since 3.0.17
	 * @var string
	 */
	private $views_path;

	/**
	 * Constructor.
	 *
	 * @access public
	 * @since 3.0.17
	 */
	public function __construct() {

		if ( ! $this->views_path ) {
			$this->views_path = wp_normalize_path( dirname( KIRKI_PLUGIN_FILE ) . '/controls/views/' );
		}
		add_action( 'customize_controls_print_footer_scripts', array( $this, 'underscore_templates' ) );
	}

	/**
	 * Adds underscore.js templates to the footer.
	 *
	 * @access public
	 * @since 3.0.17
	 * @return void
	 */
	public function underscore_templates() {
		foreach ( $this->templates as $template ) {
			if ( file_exists( $this->views_path . $template . '.php' ) ) {
				echo '<script type="text/html" id="tmpl-kirki-' . esc_attr( $template ) . '">';
				include $this->views_path . $template . '.php';
				echo '</script>';
			}
		}
	}
}

Add a Kirki_Controls class to load underscore.js templates
Add a Kirki_Controls class to load underscore.js templates

