src/BookingAwareTrait.php
<?php
namespace RebelCode\Bookings;
use Dhii\Util\String\StringableInterface as Stringable;
use Exception as RootException;
use InvalidArgumentException;
/**
* Common functionality for objects that are aware of a booking.
*
* @since 0.1
*/
trait BookingAwareTrait
{
/**
* The booking instance.
*
* @since 0.1
*
* @var BookingInterface|null
*/
protected $booking;
/**
* Retrieves the booking instance associated with this instance.
*
* @since 0.1
*
* @return BookingInterface|null The booking instance, if any.
*/
protected function _getBooking()
{
return $this->booking;
}
/**
* Sets the booking instance for this instance.
*
* @since 0.1
*
* @param BookingInterface|null $booking The booking instance, or null.
*/
protected function _setBooking($booking)
{
if ($booking !== null && !($booking instanceof BookingInterface)) {
throw $this->_createInvalidArgumentException(
$this->__('Argument is not a valid booking.'),
null,
null,
$booking
);
}
$this->booking = $booking;
}
/**
* Creates a new invalid argument exception.
*
* @since 0.1
*
* @param string|Stringable|null $message The error message, if any.
* @param int|null $code The error code, if any.
* @param RootException|null $previous The inner exception for chaining, if any.
* @param mixed|null $argument The invalid argument, if any.
*
* @return InvalidArgumentException The new exception.
*/
abstract protected function _createInvalidArgumentException(
$message = null,
$code = null,
RootException $previous = null,
$argument = null
);
/**
* Translates a string, and replaces placeholders.
*
* @since 0.1
*
* @param string $string The format string to translate.
* @param array $args Placeholder values to replace in the string.
* @param mixed $context The context for translation.
*
* @return string The translated string.
*/
abstract protected function __($string, $args = [], $context = null);
}