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<?php declare(strict_types=1); |
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/** |
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* Bright Nucleus View Component. |
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* |
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* @package BrightNucleus\View |
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* @author Alain Schlesser <[email protected]> |
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* @license MIT |
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* @link http://www.brightnucleus.com/ |
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* @copyright 2016-2017 Alain Schlesser, Bright Nucleus |
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*/ |
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namespace BrightNucleus\View\View; |
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use BrightNucleus\Config\Exception\FailedToProcessConfigException; |
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use BrightNucleus\View\Exception\FailedToInstantiateView; |
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use BrightNucleus\View\Exception\InvalidContextAddingBehavior; |
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use BrightNucleus\View\View; |
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use BrightNucleus\View\Engine\Engine; |
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use BrightNucleus\View\ViewBuilder; |
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use BrightNucleus\Views; |
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use Closure; |
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/** |
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* Abstract class AbstractView. |
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* |
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* @since 0.1.0 |
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* |
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* @package BrightNucleus\View\View |
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* @author Alain Schlesser <[email protected]> |
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*/ |
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abstract class AbstractView implements View |
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{ |
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/** |
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* URI of the view. |
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* |
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* The underscores are used to prevent accidental use of these properties from within the rendering closure. |
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* |
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* @since 0.1.0 |
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* |
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* @var string |
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*/ |
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protected $_uri_; |
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/** |
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* Engine to use for the view. |
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* |
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* The underscores are used to prevent accidental use of these properties from within the rendering closure. |
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* |
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* @since 0.1.0 |
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* |
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* @var Engine |
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*/ |
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protected $_engine_; |
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/** |
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* ViewBuilder instance. |
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* |
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* The underscores are used to prevent accidental use of these properties from within the rendering closure. |
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* |
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* @since 0.2.0 |
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* |
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* @var ViewBuilder |
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*/ |
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protected $_builder_; |
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/** |
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* The context with which the view will be rendered. |
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* |
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* The underscores are used to prevent accidental use of these properties from within the rendering closure. |
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* |
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* @since 0.4.0 |
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* |
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* @var array |
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*/ |
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protected $_context_; |
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/** |
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* Instantiate an AbstractView object. |
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* |
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* @since 0.1.0 |
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29 |
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* |
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* @param string $uri URI for the view. |
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* @param Engine $engine Engine to use for the view. |
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* @param ViewBuilder $viewBuilder View builder instance to use. |
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* @param array $context Initial context to use. |
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*/ |
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public function __construct(string $uri, Engine $engine, ViewBuilder $viewBuilder = null, array $context = []) |
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{ |
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$this->_uri_ = $uri; |
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$this->_engine_ = $engine; |
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$this->_builder_ = $viewBuilder ?? Views::getViewBuilder(); |
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$this->_context_ = $context; |
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} |
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/** |
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* Render the view. |
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* |
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* @since 0.1.0 |
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* |
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* @param array $context Optional. The context in which to render the view. |
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* @param bool $echo Optional. Whether to echo the output immediately. Defaults to false. |
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* |
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* @return string Rendered HTML. |
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* @throws FailedToProcessConfigException If the Config could not be processed. |
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*/ |
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public function render(array $context = [], bool $echo = false): string |
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{ |
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$this->assimilateContext($context); |
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$closure = Closure::bind( |
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$this->_engine_->getRenderCallback($this->_uri_, $context), |
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$this, |
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static::class |
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); |
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$output = $closure(); |
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if ($echo) { |
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echo $output; |
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} |
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return $output; |
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} |
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/** |
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* Render a partial view (or section) for a given URI. |
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* |
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* @since 0.2.0 |
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* |
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* @param string $view View identifier to create a view for. |
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* @param array $context Optional. The context in which to render the view. |
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* @param string|null $type Type of view to create. |
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* |
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* @return string Rendered HTML content. |
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* @throws FailedToProcessConfigException If the Config could not be processed. |
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* @throws FailedToInstantiateView If the View could not be instantiated. |
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*/ |
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public function section(string $view, array $context = null, $type = null): string |
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{ |
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if (null === $context) { |
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$context = $this->_context_; |
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} |
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$viewObject = $this->_builder_->create($view, $type); |
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return $viewObject->render($context); |
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} |
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/** |
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* Get the entire array of contextual data. |
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* |
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* @since 0.4.0 |
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* |
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* @return array Array of contextual data. |
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*/ |
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public function getContext(): array |
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{ |
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return $this->_context_; |
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} |
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/** |
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* Add information to the context. |
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* |
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* @param string $key Context key to add. |
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* @param mixed $value Value to add under the given key. |
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* @param string $behavior Behavior to use for adapting the context. |
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* @return View |
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*/ |
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public function addToContext( string $key, $value, string $behavior ): View |
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{ |
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switch ($behavior) { |
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case View::REPLACE: |
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$this->_context_[$key] = $value; |
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return $this; |
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case View::MERGE: |
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if(array_key_exists($key, $this->_context_)) { |
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$this->_context_ = array_merge_recursive($this->_context_, [$key => $value]); |
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return $this; |
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} |
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$this->_context_[$key] = $value; |
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return $this; |
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View Code Duplication |
case View::ADD_ONLY: |
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if (array_key_exists($key, $this->_context_)) { |
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return $this; |
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} |
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$this->_context_[$key] = $value; |
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return $this; |
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View Code Duplication |
case View::REPLACE_ONLY: |
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if (! array_key_exists($key, $this->_context_)) { |
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return $this; |
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} |
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$this->_context_[$key] = $value; |
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return $this; |
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View Code Duplication |
case View::MERGE_ONLY: |
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if (! array_key_exists($key, $this->_context_)) { |
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return $this; |
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} |
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$this->_context_ = array_merge_recursive($this->_context_, [$key => $value]); |
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return $this; |
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default: |
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throw new InvalidContextAddingBehavior( |
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sprintf( |
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_('Invalid behavior "%s" for adding to the context of view "%s".'), |
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$key, |
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$this->_uri_ |
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) |
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); |
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} |
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} |
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/** |
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* Associate a view builder with this view. |
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* |
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* @since 0.2.0 |
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* |
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* @param ViewBuilder $builder |
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* |
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* @return View |
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*/ |
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public function setBuilder(ViewBuilder $builder): View |
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{ |
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$this->_builder_ = $builder; |
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return $this; |
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} |
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/** |
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* Assimilate the context to make it available as properties. |
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* |
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* @since 0.2.0 |
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* |
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* @param array $context Context to assimilate. |
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*/ |
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protected function assimilateContext(array $context = []) |
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{ |
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$this->_context_ = $context; |
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foreach ($context as $key => $value) { |
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$this->$key = $value; |
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} |
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} |
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/** |
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* Turn invokable objects as properties into methods of the view. |
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* |
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* @param string $method Method that was called on the view. |
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* @param array $arguments Array of arguments that were used. |
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* @return mixed Return value of the invokable object. |
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*/ |
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public function __call($method, $arguments) { |
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if ( ! property_exists($this, $method) |
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|| ! is_callable($this->$method)) { |
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trigger_error( |
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"Call to undefined method {$method} on a view.", |
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E_USER_ERROR |
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); |
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} |
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$callable = $this->$method; |
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return $callable(...$arguments); |
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} |
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} |
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This check looks for
@paramannotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.