aristath/kirki

<?php
/**
 * Handles CSS output for background-image.
 *
 * @package     Kirki
 * @subpackage  Controls
 * @copyright   Copyright (c) 2019, Ari Stathopoulos (@aristath)
 * @license    https://opensource.org/licenses/MIT
 * @since       2.2.0
 */

namespace Kirki\Module\CSS\Property;

use Kirki\Module\CSS\Property;

/**
 * Output overrides.
 */
class Background_Image extends Property {

    /**
     * Modifies the value.
     *
     * @access protected
     */
    protected function process_value() {
        if ( is_array( $this->value ) && isset( $this->value['url'] ) ) {
            $this->value = $this->value['url'];
        }
        if ( false === strpos( $this->value, 'gradient' ) && false === strpos( $this->value, 'url(' ) ) {
            if ( empty( $this->value ) ) {
                return;
            }
            if ( preg_match( '/^\d+$/', $this->value ) ) {
                $this->value = 'url("' . set_url_scheme( wp_get_attachment_url( $this->value ) ) . '")';
            } else {
                $this->value = 'url("' . set_url_scheme( $this->value ) . '")';
            }
        }
    }
}