function ResponsiveImageFormatter::settingsForm

Overrides FormatterBase::settingsForm

File

core/modules/responsive_image/src/Plugin/Field/FieldFormatter/ResponsiveImageFormatter.php, line 128

Class

ResponsiveImageFormatter

Plugin for responsive image formatter.

Namespace

Code

public function settingsForm(array $form, FormStateInterface $form_state) {
    $elements = parent::settingsForm($form, $form_state);
    $responsive_image_options = [];
    $responsive_image_styles = $this->responsiveImageStyleStorage
        ->loadMultiple();
    uasort($responsive_image_styles, '\\Drupal\\responsive_image\\Entity\\ResponsiveImageStyle::sort');
    if ($responsive_image_styles && !empty($responsive_image_styles)) {
        foreach ($responsive_image_styles as $machine_name => $responsive_image_style) {
            if ($responsive_image_style->hasImageStyleMappings()) {
                $responsive_image_options[$machine_name] = $responsive_image_style->label();
            }
        }
    }
    $elements['responsive_image_style'] = [
        '#title' => $this->t('Responsive image style'),
        '#type' => 'select',
        '#default_value' => $this->getSetting('responsive_image_style') ?: NULL,
        '#required' => TRUE,
        '#options' => $responsive_image_options,
        '#description' => [
            '#markup' => $this->linkGenerator
                ->generate($this->t('Configure Responsive Image Styles'), new Url('entity.responsive_image_style.collection')),
            '#access' => $this->currentUser
                ->hasPermission('administer responsive image styles'),
        ],
    ];
    $image_loading = $this->getSetting('image_loading');
    $elements['image_loading'] = [
        '#type' => 'details',
        '#title' => $this->t('Image loading'),
        '#weight' => 10,
        '#description' => $this->t('Lazy render images with native image loading attribute (<em>loading="lazy"</em>). This improves performance by allowing browsers to lazily load images. See <a href="@url">Lazy loading</a>.', [
            '@url' => 'https://developer.mozilla.org/en-US/docs/Web/Performance/Lazy_loading#images_and_iframes',
        ]),
    ];
    $loading_attribute_options = [
        'lazy' => $this->t('Lazy'),
        'eager' => $this->t('Eager'),
    ];
    $elements['image_loading']['attribute'] = [
        '#title' => $this->t('Lazy loading attribute'),
        '#type' => 'select',
        '#default_value' => $image_loading['attribute'],
        '#options' => $loading_attribute_options,
        '#description' => $this->t('Select the lazy loading attribute for images. <a href=":link">Learn more.</a>', [
            ':link' => 'https://html.spec.whatwg.org/multipage/urls-and-fetching.html#lazy-loading-attributes',
        ]),
    ];
    $link_types = [
        'content' => $this->t('Content'),
        'file' => $this->t('File'),
    ];
    $elements['image_link'] = [
        '#title' => $this->t('Link image to'),
        '#type' => 'select',
        '#default_value' => $this->getSetting('image_link'),
        '#empty_option' => $this->t('Nothing'),
        '#options' => $link_types,
    ];
    return $elements;
}