public static function Link::preRenderElement in Express 8

Pre-render element callback.

Parameters

\Drupal\bootstrap\Utility\Element $element: The element object.

Overrides PrerenderBase::preRenderElement

File

themes/contrib/bootstrap/src/Plugin/Prerender/Link.php, line 33

Contains \Drupal\bootstrap\Plugin\Prerender\Link.

Class

Link

Pre-render callback for the "link" element type.

Namespace

Drupal\bootstrap\Plugin\Prerender

Code

public static function preRenderElement(Element $element) {

  // Injects the icon into the title (the only way this is possible).
  if ($icon =& $element
    ->getProperty('icon')) {
    $title = $element
      ->getProperty('title');

    // Handle #icon_only.
    if ($element
      ->getProperty('icon_only')) {
      if ($attribute_title = $element
        ->getAttribute('title', '')) {
        $title .= ' - ' . $attribute_title;
      }
      $element
        ->setAttribute('title', $title)
        ->addClass('icon-only')
        ->setProperty('title', $icon);
      if (Bootstrap::getTheme()
        ->getSetting('tooltip_enabled')) {
        $element
          ->setAttribute('data-toggle', 'tooltip');
      }
      return;
    }

    // Handle #icon_position.
    $position = $element
      ->getProperty('icon_position', 'before');

    // Render #icon and trim it (so it doesn't add underlines in whitespace).
    $rendered_icon = trim(Element::create($icon)
      ->renderPlain());

    // Default position is before.
    $markup = "{$rendered_icon}@title";
    if ($position === 'after') {
      $markup = "@title{$rendered_icon}";
    }

    // Replace the title and set an icon position class.
    $element
      ->setProperty('title', new FormattableMarkup($markup, [
      '@title' => $title,
    ]))
      ->addClass("icon-{$position}");
  }
}