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<?php |
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namespace Charcoal\View; |
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// PSR-3 (logger) dependencies |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LoggerAwareTrait; |
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// Local namespace dependencies |
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use Charcoal\View\EngineInterface; |
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use Charcoal\View\LoaderInterface; |
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/** |
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* Default implementation, as abstract class, of the `EngineInterface`. |
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* |
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* View Engines are comprised of 2 things: |
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* - A template loader, wich is a `LoaderInterfaceObject` |
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* - Set with `set_loader()` / Get with `loader()` |
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* - Provides `loadtemplate()` method |
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* - A `render()` method, which takes a $template and a $context arguments |
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* |
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* > Engines implements the `LoggerAwareInterface`. A logger can be accessed with the `logger()` method. |
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*/ |
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abstract class AbstractEngine implements |
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EngineInterface, |
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LoggerAwareInterface |
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{ |
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use LoggerAwareTrait; |
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/** |
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* @var LoaderInterface |
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*/ |
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private $loader; |
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/** |
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* The cache option. |
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* |
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* @var mixed |
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*/ |
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private $cache; |
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/** |
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* @return string |
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*/ |
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abstract public function type(); |
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/** |
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* Build the object with an array of dependencies. |
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* |
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* ## Required parameters: |
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* - `logger` a PSR-3 logger |
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* - `loader` a Loader object, to load templates. |
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* |
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* @param array $data Engine dependencie. |
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*/ |
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public function __construct(array $data) |
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{ |
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$this->setLogger($data['logger']); |
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$this->setLoader($data['loader']); |
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if (isset($data['cache'])) { |
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$this->setCache($data['cache']); |
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} |
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} |
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/** |
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* Set the engine's cache implementation. |
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* |
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* @param mixed $cache A engine cache implementation, |
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* an absolute path to the compiled views, |
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* a boolean to enable/disable cache. |
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* @return void |
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*/ |
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protected function setCache($cache) |
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{ |
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$this->cache = $cache; |
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} |
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/** |
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* Get the engine's cache implementation. |
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* |
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* @return mixed |
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*/ |
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protected function cache() |
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{ |
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return $this->cache; |
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} |
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/** |
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* @param LoaderInterface $loader A loader instance. |
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* @return void |
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*/ |
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private function setLoader(LoaderInterface $loader) |
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{ |
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$this->loader = $loader; |
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} |
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/** |
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* @return LoaderInterface |
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*/ |
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protected function loader() |
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{ |
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return $this->loader; |
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} |
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/** |
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* Delegates template loading to the engine's Loader object. |
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* |
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* @param string $templateIdent The template identifier to load. |
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* @return string The template string, loaded from identifier. |
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*/ |
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public function loadTemplate($templateIdent) |
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{ |
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return $this->loader()->load($templateIdent); |
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} |
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/** |
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* Render a template (from ident) with a given context. |
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* |
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* @param string $templateIdent The template identifier to load and render. |
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* @param mixed $context The rendering context. |
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* @return string The rendered template string. |
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*/ |
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public function render($templateIdent, $context) |
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{ |
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$template = $this->loadTemplate($templateIdent); |
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return $this->renderTemplate($template, $context); |
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} |
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/** |
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* @param string $templateString The template string to render. |
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* @param mixed $context The rendering context. |
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* @return string The rendered template string. |
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*/ |
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abstract public function renderTemplate($templateString, $context); |
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/** |
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* @param string $varName The name of the variable to set this template unto. |
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* @param string|null $templateIdent The "dynamic template" to set. null to clear. |
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* @return void |
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*/ |
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public function setDynamicTemplate($varName, $templateIdent) |
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{ |
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$this->loader()->setDynamicTemplate($varName, $templateIdent); |
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} |
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} |
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locomotivemtl /
charcoal-view
