WC_Email::style_inline() │ public │ WC 1.0

Apply inline styles to dynamic content.

We only inline CSS for html emails, and to do so we use Emogrifier library (if supported).

Method of the class: WC_Email{}

Return

String.

Usage

$WC_Email = new WC_Email();
$WC_Email->style_inline( $content );

$content(string|null) (required)

Content that will receive inline styles.

WC_Email::style_inline() WC Email::style inline code ^{WC 9.7.1}

public function style_inline( $content ) {
	if ( in_array( $this->get_content_type(), array( 'text/html', 'multipart/alternative' ), true ) ) {
		$css  = '';
		$css .= $this->get_must_use_css_styles();
		$css .= "\n";

		ob_start();
		wc_get_template( 'emails/email-styles.php' );
		$css .= ob_get_clean();

		/**
		 * Provides an opportunity to filter the CSS styles included in e-mails.
		 *
		 * @since 2.3.0
		 *
		 * @param string    $css   CSS code.
		 * @param \WC_Email $email E-mail instance.
		 */
		$css = apply_filters( 'woocommerce_email_styles', $css, $this );

		$css_inliner_class = CssInliner::class;

		if ( $this->supports_emogrifier() && class_exists( $css_inliner_class ) ) {
			try {
				$css_inliner = CssInliner::fromHtml( $content )->inlineCss( $css );

				do_action( 'woocommerce_emogrifier', $css_inliner, $this );

				$dom_document = $css_inliner->getDomDocument();

				HtmlPruner::fromDomDocument( $dom_document )->removeElementsWithDisplayNone();
				$content = CssToAttributeConverter::fromDomDocument( $dom_document )
					->convertCssToVisualAttributes()
					->render();
			} catch ( Exception $e ) {
				$logger = wc_get_logger();
				$logger->error( $e->getMessage(), array( 'source' => 'emogrifier' ) );
			}
		} else {
			$content = '<style type="text/css">' . $css . '</style>' . $content;
		}
	}

	return $content;
}