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<?php |
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namespace Star\Component\State\Transitions; |
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use Star\Component\State\RegistryBuilder; |
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use Star\Component\State\StateRegistry; |
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use Star\Component\State\StateTransition; |
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use Star\Component\State\StateVisitor; |
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use Star\Component\State\TransitionVisitor; |
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use Webmozart\Assert\Assert; |
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final class ManyToOneTransition implements StateTransition |
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{ |
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/** |
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* @var string[] |
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*/ |
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private $fromStates; |
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/** |
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* @var string |
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*/ |
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private $to; |
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/** |
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* @param string[] $fromStates |
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* @param string $to |
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*/ |
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public function __construct(array $fromStates, $to) |
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{ |
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Assert::greaterThanEq(count($fromStates), 1, 'Expected at least %2$s state. Got: %s'); |
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Assert::allString($fromStates); |
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Assert::string($to); |
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$this->fromStates = $fromStates; |
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$this->to = $to; |
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} |
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/** |
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* @param string $state |
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* |
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* @return bool |
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*/ |
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public function isAllowed($state) |
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{ |
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Assert::string($state); |
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return in_array($state, $this->fromStates, true); |
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} |
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/** |
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* @param RegistryBuilder $registry |
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*/ |
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public function onRegister(RegistryBuilder $registry) |
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{ |
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foreach ($this->fromStates as $from) { |
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$registry->registerState($from, []); |
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} |
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$registry->registerState($this->to, []); |
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} |
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public function getDestinationState() |
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{ |
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return $this->to; |
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} |
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/** |
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* @param TransitionVisitor $visitor |
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*/ |
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public function acceptTransitionVisitor(TransitionVisitor $visitor) |
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{ |
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foreach ($this->fromStates as $from) { |
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$visitor->visitFromState($from); |
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} |
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$visitor->visitToState($this->to); |
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} |
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/** |
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* @param StateVisitor $visitor |
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* @param StateRegistry $registry |
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*/ |
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public function acceptStateVisitor(StateVisitor $visitor, StateRegistry $registry) |
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{ |
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foreach ($this->fromStates as $from) { |
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$registry->getState($from)->acceptStateVisitor($visitor); |
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} |
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$registry->getState($this->to)->acceptStateVisitor($visitor); |
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} |
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} |
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yvoyer /
php-state
