rilwis/meta-box

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

/**
 * The background field.
 */
class RWMB_Background_Field extends RWMB_Field {
    public static function admin_enqueue_scripts() {
        wp_enqueue_style( 'rwmb-background', RWMB_CSS_URL . 'background.css', [], RWMB_VER );
        wp_style_add_data( 'rwmb-background', 'path', RWMB_CSS_DIR . 'background.css' );

        $args  = func_get_args();
        $field = reset( $args );
        $color = RWMB_Color_Field::normalize( [
            'type'          => 'color',
            'id'            => "{$field['id']}_color",
            'field_name'    => "{$field['field_name']}[color]",
            'alpha_channel' => true,
        ] );
        RWMB_Color_Field::admin_enqueue_scripts( $color );
        RWMB_File_Input_Field::admin_enqueue_scripts();
    }

    /**
     * Get field HTML.
     *
     * @param mixed $meta  Meta value.
     * @param array $field Field settings.
     *
     * @return string
     */
    public static function html( $meta, $field ) {
        $meta = wp_parse_args( $meta, [
            'color'      => '',
            'image'      => '',
            'repeat'     => '',
            'attachment' => '',
            'position'   => '',
            'size'       => '',
        ] );

        $output = '<div class="rwmb-background-row">';

        // Color.
        $color   = RWMB_Color_Field::normalize( [
            'type'          => 'color',
            'id'            => "{$field['id']}_color",
            'field_name'    => "{$field['field_name']}[color]",
            'alpha_channel' => true,
        ] );
        $output .= RWMB_Color_Field::html( $meta['color'], $color );

        $output .= '</div><!-- .rwmb-background-row -->';
        $output .= '<div class="rwmb-background-row">';

        // Image.
        $image   = RWMB_File_Input_Field::normalize( [
            'type'        => 'file_input',
            'id'          => "{$field['id']}_image",
            'field_name'  => "{$field['field_name']}[image]",
            'placeholder' => __( 'Background Image', 'meta-box' ),
        ] );
        $output .= RWMB_File_Input_Field::html( $meta['image'], $image );

        $output .= '</div><!-- .rwmb-background-row -->';
        $output .= '<div class="rwmb-background-row">';

        // Repeat.
        $repeat  = RWMB_Select_Field::normalize( [
            'type'        => 'select',
            'id'          => "{$field['id']}_repeat",
            'field_name'  => "{$field['field_name']}[repeat]",
            'placeholder' => esc_html__( '-- Repeat --', 'meta-box' ),
            'options'     => [
                'no-repeat' => esc_html__( 'No Repeat', 'meta-box' ),
                'repeat'    => esc_html__( 'Repeat All', 'meta-box' ),
                'repeat-x'  => esc_html__( 'Repeat Horizontally', 'meta-box' ),
                'repeat-y'  => esc_html__( 'Repeat Vertically', 'meta-box' ),
                'inherit'   => esc_html__( 'Inherit', 'meta-box' ),
            ],
        ] );
        $output .= RWMB_Select_Field::html( $meta['repeat'], $repeat );

        // Position.
        $position = RWMB_Select_Field::normalize( [
            'type'        => 'select',
            'id'          => "{$field['id']}_position",
            'field_name'  => "{$field['field_name']}[position]",
            'placeholder' => esc_html__( '-- Position --', 'meta-box' ),
            'options'     => [
                'top left'      => esc_html__( 'Top Left', 'meta-box' ),
                'top center'    => esc_html__( 'Top Center', 'meta-box' ),
                'top right'     => esc_html__( 'Top Right', 'meta-box' ),
                'center left'   => esc_html__( 'Center Left', 'meta-box' ),
                'center center' => esc_html__( 'Center Center', 'meta-box' ),
                'center right'  => esc_html__( 'Center Right', 'meta-box' ),
                'bottom left'   => esc_html__( 'Bottom Left', 'meta-box' ),
                'bottom center' => esc_html__( 'Bottom Center', 'meta-box' ),
                'bottom right'  => esc_html__( 'Bottom Right', 'meta-box' ),
            ],
        ] );
        $output  .= RWMB_Select_Field::html( $meta['position'], $position );

        // Attachment.
        $attachment = RWMB_Select_Field::normalize( [
            'type'        => 'select',
            'id'          => "{$field['id']}_attachment",
            'field_name'  => "{$field['field_name']}[attachment]",
            'placeholder' => esc_html__( '-- Attachment --', 'meta-box' ),
            'options'     => [
                'fixed'   => esc_html__( 'Fixed', 'meta-box' ),
                'scroll'  => esc_html__( 'Scroll', 'meta-box' ),
                'inherit' => esc_html__( 'Inherit', 'meta-box' ),
            ],
        ] );
        $output    .= RWMB_Select_Field::html( $meta['attachment'], $attachment );

        // Size.
        $size    = RWMB_Select_Field::normalize( [
            'type'        => 'select',
            'id'          => "{$field['id']}_size",
            'field_name'  => "{$field['field_name']}[size]",
            'placeholder' => esc_html__( '-- Size --', 'meta-box' ),
            'options'     => [
                'inherit' => esc_html__( 'Inherit', 'meta-box' ),
                'cover'   => esc_html__( 'Cover', 'meta-box' ),
                'contain' => esc_html__( 'Contain', 'meta-box' ),
            ],
        ] );
        $output .= RWMB_Select_Field::html( $meta['size'], $size );
        $output .= '</div><!-- .rwmb-background-row -->';

        return $output;
    }

    /**
     * Format a single value for the helper functions. Sub-fields should overwrite this method if necessary.
     *
     * @param array    $field   Field parameters.
     * @param array    $value   The value.
     * @param array    $args    Additional arguments. Rarely used. See specific fields for details.
     * @param int|null $post_id Post ID. null for current post. Optional.
     *
     * @return string
     */
    public static function format_single_value( $field, $value, $args, $post_id ) {
        if ( empty( $value ) ) {
            return '';
        }
        $output = '';
        $value  = array_filter( $value );
        foreach ( $value as $key => $subvalue ) {
            $subvalue = 'image' === $key ? 'url(' . esc_url( $subvalue ) . ')' : $subvalue;
            $output  .= 'background-' . $key . ': ' . $subvalue . ';';
        }
        return $output;
    }
}