Added Event entity type.

src/Form/OCEventDeleteForm.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Drupal\opencase\Form;
+
+use Drupal\Core\Entity\EntityConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+
+/**
+ * Builds the form to delete Event entities.
+ */
+class OCEventDeleteForm extends EntityConfirmFormBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return $this->t('Are you sure you want to delete %name?', ['%name' => $this->entity->label()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('entity.oc_event.collection');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return $this->t('Delete');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $this->entity->delete();
+
+    $this->messenger()->addMessage(
+      $this->t('content @type: deleted @label.', [
+        '@type' => $this->entity->bundle(),
+        '@label' => $this->entity->label(),
+      ])
+    );
+
+    $form_state->setRedirectUrl($this->getCancelUrl());
+  }
+
+}

src/Form/OCEventForm.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace Drupal\opencase\Form;
+
+use Drupal\Core\Entity\EntityForm;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Class OCEventForm.
+ */
+class OCEventForm extends EntityForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function form(array $form, FormStateInterface $form_state) {
+    $form = parent::form($form, $form_state);
+
+    $oc_event = $this->entity;
+    $form['label'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Label'),
+      '#maxlength' => 255,
+      '#default_value' => $oc_event->label(),
+      '#description' => $this->t("Label for the Event."),
+      '#required' => TRUE,
+    ];
+
+    $form['id'] = [
+      '#type' => 'machine_name',
+      '#default_value' => $oc_event->id(),
+      '#machine_name' => [
+        'exists' => '\Drupal\opencase\Entity\OCEvent::load',
+      ],
+      '#disabled' => !$oc_event->isNew(),
+    ];
+
+    /* You will need additional form elements for your custom properties. */
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    $oc_event = $this->entity;
+    $status = $oc_event->save();
+
+    switch ($status) {
+      case SAVED_NEW:
+        $this->messenger()->addMessage($this->t('Created the %label Event.', [
+          '%label' => $oc_event->label(),
+        ]));
+        break;
+
+      default:
+        $this->messenger()->addMessage($this->t('Saved the %label Event.', [
+          '%label' => $oc_event->label(),
+        ]));
+    }
+    $form_state->setRedirectUrl($oc_event->toUrl('collection'));
+  }
+
+}