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<?php |
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declare(strict_types = 1); |
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/* |
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* This file is part of the statemachine package |
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* |
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* (c) Michal Wachowski <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace StateMachine; |
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use StateMachine\Collection\Events; |
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use StateMachine\Exception\InvalidArgumentException; |
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use StateMachine\Payload; |
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/** |
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* State machine state representation |
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* |
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* @package StateMachine |
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*/ |
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final class State |
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{ |
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/** |
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* State name |
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* |
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* @var string |
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*/ |
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private $name; |
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/** |
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* State events |
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* |
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* @var Events |
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*/ |
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private $events; |
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/** |
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* Additional attributes |
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* |
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* @var Attributes |
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*/ |
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private $attributes; |
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/** |
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* @param string $name state name |
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* @param Event[] $events list of events in state |
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* @param array $attributes additional attributes |
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* |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct($name, array $events = [], array $attributes = []) |
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{ |
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if (empty($name)) { |
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throw InvalidArgumentException::emptyStateName(); |
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} |
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$this->name = $name; |
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$this->events = new Events($events); |
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$this->attributes = new Attributes($attributes); |
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} |
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/** |
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* Return state name |
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* |
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* @return string |
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*/ |
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public function name(): string |
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{ |
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return $this->name; |
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} |
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/** |
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* Return event collection |
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* |
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* @return Event[] |
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*/ |
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public function events(): array |
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{ |
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return $this->events->all(); |
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} |
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/** |
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* Return true if event exists in collection |
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* |
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* @param string $name |
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* |
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* @return bool |
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*/ |
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public function hasEvent($name): bool |
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{ |
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return $this->events->has($name); |
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} |
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/** |
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* Return event with given name |
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* |
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* @param string $name |
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* |
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* @return Event |
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*/ |
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public function event($name): Event |
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{ |
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return $this->events->get($name); |
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} |
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/** |
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* Return attributes container |
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* |
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* @return Attributes |
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*/ |
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public function attributes(): Attributes |
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{ |
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return $this->attributes; |
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} |
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/** |
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* Triggers event with given name and payload |
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* Returns name of next state or null if no change |
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* |
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* @param string $name |
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* @param Payload $payload |
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* |
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* @return null|string |
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*/ |
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public function triggerEvent($name, Payload $payload) |
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{ |
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return $this->event($name)->trigger($payload); |
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} |
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/** |
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* Return state string representation - its name |
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* |
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* @return string |
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*/ |
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public function __toString(): string |
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{ |
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return $this->name(); |
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} |
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} |
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potfur /
statemachine
