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Adam Shepherd authoredAdam Shepherd authored
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InlineCssEmailAdjuster.php 2.45 KiB
<?php
namespace Drupal\symfony_mailer\Plugin\EmailAdjuster;
use Drupal\Core\Asset\AssetResolverInterface;
use Drupal\Core\Asset\AttachedAssets;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\symfony_mailer\Processor\EmailAdjusterBase;
use Drupal\symfony_mailer\EmailInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use TijsVerkoyen\CssToInlineStyles\CssToInlineStyles;
/**
* Defines the Inline CSS Email Adjuster.
*
* @EmailAdjuster(
* id = "mailer_inline_css",
* label = @Translation("Inline CSS"),
* description = @Translation("Add inline CSS."),
* weight = 900,
* )
*/
class InlineCssEmailAdjuster extends EmailAdjusterBase implements ContainerFactoryPluginInterface {
/**
* The asset resolver.
*
* @var \Drupal\Core\Asset\AssetResolverInterface
*/
protected $assetResolver;
/**
* The CSS inliner.
*
* @var \TijsVerkoyen\CssToInlineStyles\CssToInlineStyles
*/
protected $cssInliner;
/**
* Constructor.
*
* @param array $configuration
* A configuration array containing information about the plugin instance.
* @param string $plugin_id
* The plugin ID for the plugin instance.
* @param mixed $plugin_definition
* The plugin implementation definition.
* @param \Drupal\Core\Asset\AssetResolverInterface $asset_resolver
* The asset resolver.
*/
public function __construct(array $configuration, $plugin_id, $plugin_definition, AssetResolverInterface $asset_resolver) {
parent::__construct($configuration, $plugin_id, $plugin_definition);
$this->assetResolver = $asset_resolver;
$this->cssInliner = new CssToInlineStyles();
}
/**
* {@inheritdoc}
*/
public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
return new static(
$configuration,
$plugin_id,
$plugin_definition,
$container->get('asset.resolver')
);
}
/**
* {@inheritdoc}
*/
public function postRender(EmailInterface $email) {
// Inline CSS. Request optimization so that the CssOptimizer performs
// essential processing such as @import.
$assets = (new AttachedAssets())->setLibraries($email->getLibraries());
$css = '';
foreach ($this->assetResolver->getCssAssets($assets, TRUE) as $file) {
$css .= file_get_contents($file['data']);
}
if ($css) {
$email->setHtmlBody($this->cssInliner->convert($email->getHtmlBody(), $css));
}
}
}