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annotate core/lib/Drupal/Core/Render/PreviewFallbackInterface.php @ 19:fa3358dc1485 tip
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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | 129ea1e6d783 |
children |
rev | line source |
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Chris@17 | 1 <?php |
Chris@17 | 2 |
Chris@17 | 3 namespace Drupal\Core\Render; |
Chris@17 | 4 |
Chris@17 | 5 /** |
Chris@17 | 6 * Allows an element to provide a fallback representation of itself for preview. |
Chris@17 | 7 */ |
Chris@17 | 8 interface PreviewFallbackInterface { |
Chris@17 | 9 |
Chris@17 | 10 /** |
Chris@17 | 11 * Returns a string to be used as a fallback during preview. |
Chris@17 | 12 * |
Chris@17 | 13 * This is typically used when an element has no output and must be displayed, |
Chris@17 | 14 * for example during configuration. |
Chris@17 | 15 * |
Chris@17 | 16 * @return string|\Drupal\Core\StringTranslation\TranslatableMarkup |
Chris@17 | 17 * A string representing for this. |
Chris@17 | 18 */ |
Chris@17 | 19 public function getPreviewFallbackString(); |
Chris@17 | 20 |
Chris@17 | 21 } |