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<?php
defined( 'ABSPATH' ) || die;
/**
* The image select field which behaves similar to the radio field but uses images as options.
*/
class RWMB_Image_Select_Field extends RWMB_Field {
public static function admin_enqueue_scripts() {
wp_enqueue_style( 'rwmb-image-select', RWMB_CSS_URL . 'image-select.css', [], RWMB_VER );
wp_enqueue_script( 'rwmb-image-select', RWMB_JS_URL . 'image-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 ) {
$html = [];
$meta = (array) $meta;
foreach ( $field['options'] as $value => $image ) {
$attributes = self::get_attributes( $field, $value );
$html[] = sprintf(
'<label class="rwmb-image-select"><img src="%s"><input %s%s></label>',
$image,
self::render_attributes( $attributes ),
checked( in_array( $value, $meta ), true, false )
);
}
return implode( ' ', $html );
}
/**
* Normalize parameters for field.
*
* @param array $field Field parameters.
* @return array
*/
public static function normalize( $field ) {
$field = parent::normalize( $field );
$field['options'] = $field['options'] ?? [];
$field['field_name'] .= $field['multiple'] ? '[]' : '';
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['id'] = false;
$attributes['type'] = $field['multiple'] ? 'checkbox' : 'radio';
$attributes['value'] = $value;
return $attributes;
}
/**
* Format a single value for the helper functions. Sub-fields should overwrite this method if necessary.
*
* @param array $field Field parameters.
* @param string $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 ) {
return $value ? sprintf( '<img src="%s">', esc_url( $field['options'][ $value ] ) ) : '';
}
}