Link.php in Express 8
Contains \Drupal\bootstrap\Plugin\Prerender\Link.
Namespace
Drupal\bootstrap\Plugin\PrerenderFile
themes/contrib/bootstrap/src/Plugin/Prerender/Link.phpView source
<?php
/**
* @file
* Contains \Drupal\bootstrap\Plugin\Prerender\Link.
*/
namespace Drupal\bootstrap\Plugin\Prerender;
use Drupal\bootstrap\Annotation\BootstrapConstant;
use Drupal\bootstrap\Annotation\BootstrapPrerender;
use Drupal\bootstrap\Bootstrap;
use Drupal\bootstrap\Utility\Element;
use Drupal\Component\Render\FormattableMarkup;
/**
* Pre-render callback for the "link" element type.
*
* @ingroup plugins_prerender
*
* @BootstrapPrerender("link",
* action = @BootstrapConstant(
* "\Drupal\bootstrap\Bootstrap::CALLBACK_PREPEND"
* )
* )
*
* @see \Drupal\Core\Render\Element\Link::preRenderLink()
*/
class Link extends PrerenderBase {
/**
* {@inheritdoc}
*/
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}");
}
}
}