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<?php |
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namespace AmaTeam\Image\Projection\Framework; |
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use AmaTeam\Image\Projection\API\ConversionInterface; |
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use AmaTeam\Image\Projection\API\Conversion\ListenerInterface; |
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use AmaTeam\Image\Projection\API\Conversion\ProcessorInterface; |
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use AmaTeam\Image\Projection\API\SpecificationInterface; |
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use AmaTeam\Image\Projection\Tile\Tile; |
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use AmaTeam\Image\Projection\API\Type\GeneratorInterface; |
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/** |
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* Single-run conversion processing that encapsulates all userspace handlers. |
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*/ |
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class Conversion implements ConversionInterface |
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{ |
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/** |
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* @var SpecificationInterface |
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*/ |
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private $target; |
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/** |
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* @var GeneratorInterface |
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*/ |
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private $generator; |
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/** |
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* @var ListenerInterface[] |
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*/ |
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private $listeners = []; |
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/** |
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* @var ProcessorInterface[][] |
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*/ |
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private $processors = []; |
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/** |
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* @param SpecificationInterface $target |
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* @param GeneratorInterface $generator |
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*/ |
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public function __construct( |
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SpecificationInterface $target, |
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GeneratorInterface $generator |
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) { |
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$this->target = $target; |
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$this->generator = $generator; |
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} |
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/** |
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* Runs whole pipeline. Tiles are destroyed after last listener has been |
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* called. |
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*/ |
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public function run() |
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{ |
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foreach ($this->generator as $tile) { |
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$this->applyProcessors($tile, $this->target); |
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$this->notifyListeners($tile, $this->target); |
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} |
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} |
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/** |
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* @param Tile $tile |
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* @param SpecificationInterface $specification |
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*/ |
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private function applyProcessors( |
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Tile $tile, |
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SpecificationInterface $specification |
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) { |
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foreach ($this->processors as $processors) { |
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foreach ($processors as $processor) { |
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$processor->process($tile, $specification); |
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} |
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} |
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} |
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/** |
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* @param Tile $tile |
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* @param SpecificationInterface $specification |
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*/ |
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private function notifyListeners( |
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Tile $tile, |
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SpecificationInterface $specification |
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) { |
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foreach ($this->listeners as $listener) { |
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$listener->accept($tile, $specification); |
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} |
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} |
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/** |
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* @param ProcessorInterface $processor |
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* @param int $order Order in which processors are applied (lower order. |
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* values force processors to be run earlier). Processor with same order |
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* value will be run in the order they were added. |
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* priority |
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* |
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* @return $this |
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*/ |
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public function addProcessor(ProcessorInterface $processor, $order = 0) |
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{ |
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if (!$this->processors[$order]) { |
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$this->processors[$order] = []; |
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} |
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$this->processors[$order][] = $processor; |
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ksort($this->processors); |
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return $this; |
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} |
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/** |
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* @param ListenerInterface $listener |
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* @return $this |
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*/ |
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public function addListener(ListenerInterface $listener) |
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{ |
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$this->listeners[] = $listener; |
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return $this; |
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} |
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} |
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ama-team /
php-projection-framework
