<?php
// Prevent loading this file directly
defined( 'ABSPATH' ) || exit;
if ( ! class_exists( 'RWMB_Checkbox_Field' ) )
{
	class RWMB_Checkbox_Field extends RWMB_Field
	{
		/**
		 * Enqueue scripts and styles
		 *
		 * @return void
		 */
		static function admin_enqueue_scripts()
		{
			wp_enqueue_style( 'rwmb-checkbox', RWMB_CSS_URL . 'checkbox.css', array(), RWMB_VER );
		}
		/**
		 * Get field HTML
		 *
		 * @param mixed $meta
		 * @param array $field
		 *
		 * @return string
		 */
		static function html( $meta, $field )
		{
			$desc = $field['desc'] ? "<span id='{$field['id']}_description' class='description'>{$field['desc']}</span>" : '';
			return sprintf(
				'<label><input type="checkbox" class="rwmb-checkbox" name="%s" id="%s" value="1" %s> %s</label>',
				$field['field_name'],
				$field['id'],
				checked( ! empty( $meta ), 1, false ),
				$desc
			);
		}
		/**
		 * Show end HTML markup for fields
		 *
		 * @param mixed $meta
		 * @param array $field
		 *
		 * @return string
		 */
		static function end_html( $meta, $field )
		{
			$button = $field['clone'] ? call_user_func( array( RW_Meta_Box::get_class_name( $field ), 'add_clone_button' ) ) : '';
			// Closes the container
			$html = "$button</div>";
			return $html;
		}
		/**
		 * Set the value of checkbox to 1 or 0 instead of 'checked' and empty string
		 * This prevents using default value once the checkbox has been unchecked
		 *
		 * @link https://github.com/rilwis/meta-box/issues/6
		 *
		 * @param mixed $new
		 * @param mixed $old
		 * @param int   $post_id
		 * @param array $field
		 *
		 * @return int
		 */
		static function value( $new, $old, $post_id, $field )
		{
			return empty( $new ) ? 0 : 1;
		}
	}
}
