<?php
/**
 * The radio image customize control extends the WP_Customize_Control class.  This class allows
 * developers to create a list of image radio inputs.
 *
 * @package    Zita
 * @author     Justin Tadlock <justin@justintadlock.com>
 * @copyright  Copyright (c) 2008 - 2015, Justin Tadlock
 * @link       http://themehybrid.com/hybrid-core
 * @license    http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 */
if ( ! class_exists( 'WP_Customize_Control' ) ){
	return;
}
/**
 * Radio image customize control.
 *
 * @since  1.0.0
 * @access public
 */
class Zita_WP_Customize_Control_Radio_Image extends WP_Customize_Control {
    /**
     * The type of customize control being rendered.
     *
     * @since  1.0.0
     * @access public
     * @var    string
     */
    public $type = 'radio-image';

    /**
     * Loads the jQuery UI Button script and custom scripts/styles.
     *
     * @since  1.0.0
     * @access public
     * @return void
     */
    public function enqueue() {
        wp_enqueue_script( 'jquery-ui-button' );
		wp_enqueue_script( 'zita-radio-customize-controls', get_template_directory_uri() . '/customizer/customizer-radio-image/radio-image.js', array( 'jquery' ), '1.0.0', true  );
		wp_enqueue_style( 'zita-radio-customize-controls', get_template_directory_uri() . '/customizer/customizer-radio-image/radio-image.css' );
    }

    /**
     * Add custom JSON parameters to use in the JS template.
     *
     * @since  1.0.0
     * @access public
     * @return void
     */
    public function to_json() {
        parent::to_json();

        // We need to make sure we have the correct image URL.
        foreach ( $this->choices as $value => $args )
            $this->choices[ $value ]['url'] = esc_url( sprintf( $args['url'], get_template_directory_uri(), get_stylesheet_directory_uri() ) );

        $this->json['choices'] = $this->choices;
        $this->json['link']    = $this->get_link();
        $this->json['value']   = $this->value();
        $this->json['id']      = $this->id;
    }

    /**
     * Underscore JS template to handle the control's output.
     *
     * @since  1.0.0
     * @access public
     * @return void
     */
    public function content_template() { ?>

        <# if ( ! data.choices ) {
            return;
        } #>

        <# if ( data.label ) { #>
            <span class="customize-control-title">{{ data.label }}</span>
        <# } #>

        <# if ( data.description ) { #>
            <span class="description customize-control-description">{{{ data.description }}}</span>
        <# } #>

        <div class="buttonset">

            <# for ( key in data.choices ) { #>

                <input type="radio" value="{{ key }}" name="_customize-{{ data.type }}-{{ data.id }}" id="{{ data.id }}-{{ key }}" {{{ data.link }}} <# if ( key === data.value ) { #> checked="checked" <# } #> />

                <label for="{{ data.id }}-{{ key }}">
                    <span class="screen-reader-text">{{ data.choices[ key ]['label'] }}</span>
                    <img src="{{ data.choices[ key ]['url'] }}" alt="{{ data.choices[ key ]['label'] }}" />
                </label>
            <# } #>

        </div><!-- .buttonset -->
    <?php }
}