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<?php |
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namespace Spatie\BladeJavaScript; |
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use Illuminate\Config\Repository; |
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use Illuminate\Contracts\Support\Arrayable; |
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class Renderer |
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{ |
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protected $namespace; |
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public function __construct(Repository $config) |
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{ |
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$this->namespace = $config->get('laravel-blade-javascript.namespace') ?? 'window'; |
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} |
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/** |
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* @param array ...$arguments |
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* |
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* @return string |
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*/ |
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public function render(...$arguments): string |
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{ |
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$variables = $this->normalizeArguments($arguments); |
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return '<script type="text/javascript">'.$this->buildJavaScriptSyntax($variables).'</script>'; |
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} |
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/** |
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* @param $arguments |
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* |
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* @return array |
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*/ |
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protected function normalizeArguments($arguments) |
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{ |
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if ($arguments[0] instanceof Arrayable) { |
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return $arguments[0]->toArray(); |
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} |
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if (count($arguments) == 2) { |
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return [$arguments[0] => $arguments[1]]; |
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} |
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return $arguments[0]; |
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} |
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/** |
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* @param array $variables |
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* |
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* @return array |
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*/ |
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public function buildJavaScriptSyntax($variables) |
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{ |
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$js = $this->buildNamespaceDeclaration(); |
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foreach ($variables as $key => $value) { |
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$js .= $this->buildVariableInitialization($key, $value); |
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} |
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return $js; |
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} |
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/** |
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* @return string |
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*/ |
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protected function buildNamespaceDeclaration() |
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{ |
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if ($this->namespace == 'window') { |
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return ''; |
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} |
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return "window.{$this->namespace} = window.{$this->namespace} || {};"; |
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} |
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/** |
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* @param string $key |
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* @param string $value |
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* |
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* @return string |
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*/ |
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protected function buildVariableInitialization($key, $value) |
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{ |
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return "{$this->namespace}.{$key} = {$this->optimizeValueForJavaScript($value)};"; |
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} |
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/** |
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* @param string $value |
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* |
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* @return string |
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* |
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* @throws \Exception |
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*/ |
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protected function optimizeValueForJavaScript($value) |
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{ |
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$transformers = $this->getAllTransformers(); |
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$transformers = $transformers->filter(function (Transformer $transformer) use ($value) { |
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return $transformer->canTransform($value); |
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}); |
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if ($transformers->isEmpty()) { |
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throw new \Exception("Cannot transform value {$value}"); |
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} |
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return $transformers->first()->transform($value); |
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} |
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public function getAllTransformers() |
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{ |
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return collect(glob(__DIR__.'/Transformers/*.php'))->map(function ($fileName) { |
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$className = pathinfo($fileName, PATHINFO_FILENAME); |
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$fullClassName = '\\Spatie\\BladeJavaScript\\Transformers\\'.$className; |
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return new $fullClassName(); |
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}); |
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} |
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} |
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