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<?php
namespace Drupal\video_embed_field\Plugin\Field\FieldFormatter;
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FormatterBase;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\FormatterInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\Core\Render\RendererInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
class LazyLoad extends FormatterBase implements ContainerFactoryPluginInterface {
protected $thumbnailFormatter;
protected $videoFormatter;
protected $renderer;
public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, $settings, $label, $view_mode, $third_party_settings, RendererInterface $renderer, FormatterInterface $thumbnail_formatter, FormatterInterface $video_formatter) {
parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings);
$this->thumbnailFormatter = $thumbnail_formatter;
$this->videoFormatter = $video_formatter;
$this->renderer = $renderer;
}
public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
$formatter_manager = $container
->get('plugin.manager.field.formatter');
return new static($plugin_id, $plugin_definition, $configuration['field_definition'], $configuration['settings'], $configuration['label'], $configuration['view_mode'], $configuration['third_party_settings'], $container
->get('renderer'), $formatter_manager
->createInstance('video_embed_field_thumbnail', $configuration), $formatter_manager
->createInstance('video_embed_field_video', $configuration));
}
public function viewElements(FieldItemListInterface $items, $langcode) {
$element = [];
$thumbnails = $this->thumbnailFormatter
->viewElements($items, $langcode);
$videos = $this->videoFormatter
->viewElements($items, $langcode);
foreach ($items as $delta => $item) {
$itemThumb = [
$thumbnails[$delta],
];
$itemThumb[] = [
'#type' => 'html_tag',
'#tag' => 'button',
'#attributes' => [
'class' => [
'video-embed-field-lazy-play',
],
],
];
$element[$delta] = [
'#type' => 'container',
'#attributes' => [
'data-video-embed-field-lazy' => (string) $this->renderer
->render($videos[$delta]),
'class' => [
'video-embed-field-lazy',
],
],
'#attached' => [
'library' => [
'video_embed_field/lazy-load',
],
],
'#cache' => [
'contexts' => [
'user.permissions',
],
],
'children' => $itemThumb,
];
}
return $element;
}
public static function defaultSettings() {
return Thumbnail::defaultSettings() + Video::defaultSettings();
}
public function settingsForm(array $form, FormStateInterface $form_state) {
$element = parent::settingsForm($form, $form_state);
$element += $this->thumbnailFormatter
->settingsForm([], $form_state);
$element += $this->videoFormatter
->settingsForm([], $form_state);
return $element;
}
public function settingsSummary() {
$summary[] = $this
->t('Thumbnail that lazy loads video embed code.');
$summary[] = implode(',', $this->videoFormatter
->settingsSummary());
$summary[] = implode(',', $this->thumbnailFormatter
->settingsSummary());
return $summary;
}
public function calculateDependencies() {
return parent::calculateDependencies() + $this->thumbnailFormatter
->calculateDependencies() + $this->videoFormatter
->calculateDependencies();
}
public function onDependencyRemoval(array $dependencies) {
$parent = parent::onDependencyRemoval($dependencies);
$thumbnail = $this->thumbnailFormatter
->onDependencyRemoval($dependencies);
$video = $this->videoFormatter
->onDependencyRemoval($dependencies);
$this
->setSetting('image_style', $this->thumbnailFormatter
->getSetting('image_style'));
return $parent || $thumbnail || $video;
}
}