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<?php |
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declare(strict_types=1); |
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namespace Psi\Component\Grid; |
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use Metadata\MetadataFactory; |
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use Psi\Component\ObjectAgent\AgentFinder; |
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class GridFactory |
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{ |
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private $agentFinder; |
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private $metadataFactory; |
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private $cellFactory; |
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private $filterFactory; |
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private $actionPerformer; |
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public function __construct( |
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AgentFinder $agentFinder, |
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MetadataFactory $metadataFactory, |
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GridViewFactory $gridViewFactory, |
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ActionPerformer $actionPerformer |
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) { |
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$this->agentFinder = $agentFinder; |
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$this->metadataFactory = $metadataFactory; |
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$this->gridViewFactory = $gridViewFactory; |
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$this->actionPerformer = $actionPerformer; |
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} |
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public function loadGrid(string $classFqn, array $context): Grid |
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{ |
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$context = new GridContext($classFqn, $context); |
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try { |
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return $this->doLoadGrid($context); |
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} catch (\Exception $exception) { |
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throw new \InvalidArgumentException(sprintf( |
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'Could not load grid for class "%s"', $classFqn |
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), 0, $exception); |
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} |
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} |
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private function doLoadGrid(GridContext $context): Grid |
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{ |
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if (null === $metadata = $this->metadataFactory->getMetadataForClass($context->getClassFqn())) { |
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throw new \InvalidArgumentException('Could not locate grid metadata'); |
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} |
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// find the agent and get the grid metadata. |
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$agent = $this->agentFinder->findFor($context->getClassFqn()); |
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$gridMetadata = $this->resolveGridMetadata($metadata->getGrids(), $context->getVariant()); |
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return new Grid( |
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$this->gridViewFactory, |
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$this->actionPerformer, |
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$agent, |
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$context, |
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$gridMetadata |
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); |
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} |
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private function resolveGridMetadata(array $grids, string $variant = null) |
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{ |
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if (empty($grids)) { |
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throw new \InvalidArgumentException('No grid variants are available'); |
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} |
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// if no explicit grid variant is requested, return the first one that |
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// was defined. |
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if (null === $variant) { |
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return reset($grids); |
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} |
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if (!isset($grids[$variant])) { |
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throw new \InvalidArgumentException(sprintf( |
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'Unknown grid variant "%s", available variants: "%s"', |
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implode('", "', array_keys($grids)) |
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)); |
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} |
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return $grids[$variant]; |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: