interface UnitInterface in Physical Fields 8

Provides the interface for unit classes.

A unit class defines all possible units for a measurement type.

Hierarchy

• interface \Drupal\physical\UnitInterface

File

src/UnitInterface.php, line 10

Namespace

Drupal\physical

interface UnitInterface {

  /**
   * Gets the labels for the defined units.
   *
   * @return array
   *   An array of labels keyed by unit.
   */
  public static function getLabels();

  /**
   * Gets the base unit.
   *
   * @return string
   *   The base unit.
   */
  public static function getBaseUnit();

  /**
   * Gets the base factor for the given unit.
   *
   * Used for converting measurements to and from the base unit.
   * Use multiplication to convert a measurement to the base unit, and
   * division to convert from the base unit (into the given unit).
   *
   * @param string $unit
   *   The unit.
   *
   * @return string
   *   The base factor.
   */
  public static function getBaseFactor($unit);

  /**
   * Asserts that the given unit exists.
   *
   * @param string $unit
   *   The unit.
   *
   * @throws \InvalidArgumentException
   */
  public static function assertExists($unit);

}

Members

Name	Modifiers	Type	Description	Overrides
UnitInterface::assertExists	public static	function	Asserts that the given unit exists.	5
UnitInterface::getBaseFactor	public static	function	Gets the base factor for the given unit.	5
UnitInterface::getBaseUnit	public static	function	Gets the base unit.	5
UnitInterface::getLabels	public static	function	Gets the labels for the defined units.	5