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<?php |
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/** |
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* This file is part of slick/web_stack package |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Slick\WebStack\Renderer\Extension; |
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use Slick\Template\EngineExtensionInterface; |
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use Slick\Template\Extension\AbstractTwigExtension; |
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use Slick\WebStack\Service\UriGeneratorInterface; |
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use Twig\TwigFunction; |
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/** |
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* HtmlExtension |
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* |
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* @package Slick\WebStack\Renderer\Extension |
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*/ |
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class HtmlExtension extends AbstractTwigExtension implements EngineExtensionInterface |
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{ |
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/** |
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* @var UriGeneratorInterface |
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*/ |
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private $generator; |
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/** |
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* @var array Default options for addCss and addJs template functions |
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*/ |
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private static $options = [ |
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'is_safe' => ['html'] |
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]; |
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/** |
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* Creates an HTML template extension |
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* |
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* @param UriGeneratorInterface $generator |
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*/ |
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public function __construct(UriGeneratorInterface $generator) |
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{ |
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$this->generator = $generator; |
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} |
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/** |
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* @return TwigFunction[] |
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*/ |
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public function getFunctions() |
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{ |
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return [ |
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'url' => new TwigFunction('url', $this->urlClosure()), |
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'addCss' => new TwigFunction('addCss', $this->cssClosure(), self::$options), |
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'addJs' => new TwigFunction('addJs', $this->jsClosure(), self::$options) |
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]; |
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} |
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/** |
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* Generates URI for provided location |
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* |
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* @param string $location Location name, path or identifier |
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* @param array $options Filter options |
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* |
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* @return null|\Psr\Http\Message\UriInterface |
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*/ |
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private function location($location, array $options = []) |
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{ |
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return $this->generator->generate($location, $options); |
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} |
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/** |
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* Creates a css link tag for provided css file |
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* |
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* @param string $file |
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* @param string $path |
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* @param array $options |
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* |
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* @return string |
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*/ |
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private function css($file, $path = 'css', array $options = []) |
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{ |
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$attr = array_key_exists('attr', $options) ? $options['attr'] : []; |
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$attr = array_merge(['rel' => 'stylesheet'], $attr); |
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$location = $this->location("{$path}/{$file}", $options); |
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return sprintf( |
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'<link href="%s" %s>', |
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$location, |
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$this->attributesStr($attr) |
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); |
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} |
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/** |
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* Converts an attributes key/value array to its string representation |
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* |
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* @param array $attr |
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* |
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* @return string |
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*/ |
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private function attributesStr(array $attr) |
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{ |
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$output = []; |
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foreach ($attr as $name => $value) { |
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$output[] = "{$name}=\"{$value}\""; |
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} |
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return implode(' ', $output); |
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} |
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/** |
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* Creates the url() template function closure |
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* |
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* @return \Closure |
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*/ |
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private function urlClosure() |
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{ |
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return function ($location, array $options = []) { |
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return $this->location($location, $options); |
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}; |
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} |
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/** |
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* Creates the addCss() template function closure |
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* |
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* @return \Closure |
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*/ |
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private function cssClosure() |
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{ |
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return function ($file, $path = 'css', array $options = []) { |
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return $this->css($file, $path, $options); |
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}; |
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} |
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/** |
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* Creates the addJs() template function closure |
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* |
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* @return \Closure |
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*/ |
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private function jsClosure() |
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{ |
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return function ($file, $path = 'js', array $options = []) { |
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$attr = array_key_exists('attr', $options) |
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? $options['attr'] |
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: []; |
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$location = $this->location("{$path}/{$file}", $options); |
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return sprintf( |
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'<script src="%s" %s></script>', |
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$location, |
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$this->attributesStr($attr) |
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); |
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}; |
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} |
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} |
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slickframework /
web-stack
