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<?php
abstract class WPCF_Field_Instance_Abstract {
/** @var WPCF_Field_Definition */
protected $definition;
/** @var null|WPCF_Field_Accessor_Abstract */
protected $accessor = null;
/**
* WPCF_Field_Instance constructor.
*
* @param WPCF_Field_Definition $definition Field definition.
*/
public function __construct( $definition ) {
if( ! $definition instanceof WPCF_Field_Definition ) {
throw new InvalidArgumentException( 'Invalid type of field definition.' );
}
$this->definition = $definition;
}
public function get_definition() { return $this->definition; }
public function get_field_type() {
$definition = $this->get_definition();
return $definition->get_type();
}
/**
* Get the accessor to the field value.
*
* We can't access it directly because we don't know how - it can be stored in post meta, user meta or term meta.
*
* @return WPCF_Field_Accessor_Abstract
*/
protected abstract function get_accessor();
/**
* Get raw value of the field directly from the database.
*
* @deprecated Use with caution! Usually the value is expected in the intermediate format, which is what get_value() is for.
* @return mixed Raw value of the field.
*/
public function get_raw_value() {
$accessor = $this->get_accessor();
return $accessor->get_raw_value();
}
/**
* @return mixed Value of the field in the "intermediate" format.
*/
public function get_value() {
return $this->get_raw_value();
}
/**
* @return int ID of the object that owns the field.
*/
public abstract function get_object_id();
}