function TextTrimmedFormatter::addTrimPreRender

Attaches the trim pre-render callback and trim length to an element.

Subclasses that decide per item whether to trim can call this on the fallback branch.

Parameters

array $element: A processed_text render element to trim.

File

core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php, line 90

Class

TextTrimmedFormatter

Plugin implementation of the 'text_trimmed' formatter.

Namespace

Code

protected function addTrimPreRender(array &$element) : void {
  // Make sure any default #pre_render callbacks are set on the element,
  // because text_pre_render_summary() must run last.
  $element += \Drupal::service('element_info')->getInfo($element['#type']);
  $element['#pre_render'][] = [
    static::class,
    'preRenderSummary',
  ];
  // Pass on the trim length to the #pre_render callback via a property.
  $element['#text_summary_trim_length'] = $this->getSetting('trim_length');
}