--- /dev/null
+<?php
+
+namespace Drupal\fontyourface\Plugin\views\filter;
+
+use Drupal\views\Plugin\views\filter\StringFilter;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Filter handler which allows to search based on font styles.
+ *
+ * @ingroup views_filter_handlers
+ *
+ * @ViewsFilter("fontyourface_font_style")
+ */
+class FontYourFaceStyleFilter extends StringFilter {
+
+ /**
+ * Exposed filter options.
+ *
+ * @var bool
+ */
+ protected $alwaysMultiple = TRUE;
+
+ /**
+ * Provide simple equality operator.
+ */
+ public function operators() {
+ return [
+ '=' => [
+ 'title' => $this->t('Is equal to'),
+ 'short' => $this->t('='),
+ 'method' => 'opEqual',
+ 'values' => 1,
+ ],
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function valueForm(&$form, FormStateInterface $form_state) {
+ $options = [
+ 'All' => '- Any -',
+ 'normal' => $this->t('Normal'),
+ 'italic' => $this->t('Italics'),
+ ];
+
+ $form['value'] = [
+ '#type' => 'select',
+ '#title' => $this->t('Font Style'),
+ '#options' => $options,
+ '#default_value' => $this->value,
+ ];
+
+ if ($exposed = $form_state->get('exposed')) {
+ $identifier = $this->options['expose']['identifier'];
+ $user_input = $form_state->getUserInput();
+ if (!isset($user_input[$identifier])) {
+ $user_input[$identifier] = $this->value;
+ $form_state->setUserInput($user_input);
+ }
+ }
+ }
+
+}