rilwis/meta-box

<?php
defined( 'ABSPATH' ) || die;

/**
 * The select field.
 */
class RWMB_Select_Field extends RWMB_Choice_Field {
    public static function admin_enqueue_scripts() {
        wp_enqueue_style( 'rwmb-select', RWMB_CSS_URL . 'select.css', [], RWMB_VER );
        wp_style_add_data( 'rwmb-select', 'path', RWMB_CSS_DIR . 'select.css' );
        wp_enqueue_script( 'rwmb-select', RWMB_JS_URL . 'select.js', [ 'jquery' ], RWMB_VER, true );
    }

    /**
     * Get field HTML.
     *
     * @param mixed $meta  Meta value.
     * @param array $field Field parameters.
     * @return string
     */
    public static function html( $meta, $field ) {
        $options                     = self::transform_options( $field['options'] );
        $attributes                  = self::call( 'get_attributes', $field, $meta );
        $attributes['data-selected'] = $meta;
        $walker                      = new RWMB_Walker_Select( $field, $meta );
        $output                      = sprintf(
            '<select %s>',
            self::render_attributes( $attributes )
        );
        if ( ! $field['multiple'] && $field['placeholder'] ) {
            $output .= '<option value="">' . esc_html( $field['placeholder'] ) . '</option>';
        }
        $output .= $walker->walk( $options, $field['flatten'] ? -1 : 0 );
        $output .= '</select>';
        $output .= self::get_select_all_html( $field );
        return $output;
    }

    /**
     * Normalize parameters for field.
     *
     * @param array $field Field parameters.
     * @return array
     */
    public static function normalize( $field ) {
        $field = parent::normalize( $field );
        $field = $field['multiple'] ? RWMB_Multiple_Values_Field::normalize( $field ) : $field;
        $field = wp_parse_args( $field, [
            'select_all_none' => false,
        ] );

        return $field;
    }

    /**
     * Get the attributes for a field.
     *
     * @param array $field Field parameters.
     * @param mixed $value Meta value.
     *
     * @return array
     */
    public static function get_attributes( $field, $value = null ) {
        $attributes = parent::get_attributes( $field, $value );
        $attributes = wp_parse_args( $attributes, [
            'multiple' => $field['multiple'],
        ] );

        return $attributes;
    }

    /**
     * Get html for select all|none for multiple select.
     *
     * @param array $field Field parameters.
     * @return string
     */
    public static function get_select_all_html( $field ) {
        if ( $field['multiple'] && $field['select_all_none'] ) {
            return '<div class="rwmb-select-all-none">' . __( 'Select', 'meta-box' ) . ': <a data-type="all" href="#">' . __( 'All', 'meta-box' ) . '</a> | <a data-type="none" href="#">' . __( 'None', 'meta-box' ) . '</a></div>';
        }
        return '';
    }
}