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<?php |
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declare(strict_types=1); |
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namespace Shoot\Shoot\Twig\NodeVisitor; |
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use Shoot\Shoot\ModelAlreadyAssignedException; |
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use Shoot\Shoot\PresentationModel; |
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use Shoot\Shoot\Twig\Node\DisplayEndNode; |
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use Shoot\Shoot\Twig\Node\DisplayStartNode; |
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use Shoot\Shoot\Twig\Node\FindPresentationModelInterface; |
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use Shoot\Shoot\Twig\Node\ModelNode; |
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use SplObjectStorage; |
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use Twig\Environment; |
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use Twig\Node\ModuleNode; |
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use Twig\Node\Node; |
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use Twig\NodeVisitor\NodeVisitorInterface; |
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use Twig\Source; |
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/** |
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* Walks through model tags to assign presentation models to templates. |
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* |
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* @internal |
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*/ |
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final class ModelNodeVisitor implements FindPresentationModelInterface, NodeVisitorInterface |
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{ |
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/** @var SplObjectStorage */ |
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private $presentationModels; |
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public function __construct() |
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{ |
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$this->presentationModels = new SplObjectStorage(); |
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} |
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/** |
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* @param Node $node |
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* @param Environment $environment |
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* |
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* @return Node |
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*/ |
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public function enterNode(Node $node, Environment $environment): Node |
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{ |
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if ($node instanceof ModelNode) { |
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$this->assign($node->getSourceContext(), $node->getAttribute('presentation_model')); |
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} |
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return $node; |
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} |
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/** |
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* @param Node $node |
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* @param Environment $environment |
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* |
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* @return Node |
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*/ |
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public function leaveNode(Node $node, Environment $environment): Node |
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{ |
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if (!($node instanceof ModuleNode)) { |
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return $node; |
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} |
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if (!isset($this->presentationModels[$node->getSourceContext()])) { |
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return $node; |
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} |
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if ($node->hasAttribute('embedded_templates')) { |
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/** @var ModuleNode $embeddedTemplate */ |
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foreach ($node->getAttribute('embedded_templates') as $embeddedTemplate) { |
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$embeddedTemplate->setAttribute('is_embedded', true); |
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} |
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} |
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$node->setNode('display_start', new DisplayStartNode($node, $this)); |
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$node->setNode('display_end', new DisplayEndNode($node)); |
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return $node; |
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} |
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/** |
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* Returns the presentation model for the given view. |
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* |
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* @param Source $source |
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* |
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* @return string |
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*/ |
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public function for(Source $source): string |
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{ |
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if (isset($this->presentationModels[$source])) { |
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return (string)$this->presentationModels[$source]; |
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} |
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return PresentationModel::class; |
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} |
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/** |
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* @return int |
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*/ |
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public function getPriority(): int |
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{ |
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// Should be between -10 and 10, with 0 as the default |
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return -10; |
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} |
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/** |
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* @param Source $source |
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* @param string $presentationModel |
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* |
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* @return void |
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* |
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* @throws ModelAlreadyAssignedException |
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*/ |
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private function assign(Source $source, string $presentationModel): void |
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{ |
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if (isset($this->presentationModels[$source])) { |
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throw new ModelAlreadyAssignedException("A presentation model has already been assigned to {$source->getName()}"); |
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} |
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$this->presentationModels[$source] = $presentationModel; |
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} |
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} |
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shootphp /
shoot
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