Initial commit

config/schema/heartbeat.schema.yml

@@ -0,0 +1,12 @@
+heartbeat8.heartbeat.*:
+  type: config_entity
+  label: 'Heartbeat config'
+  mapping:
+    id:
+      type: string
+      label: 'ID'
+    label:
+      type: label
+      label: 'Label'
+    uuid:
+      type: string

config/schema/heartbeat_type.schema.yml

@@ -0,0 +1,12 @@
+heartbeat8.heartbeat_type.*:
+  type: config_entity
+  label: 'Heartbeat type config'
+  mapping:
+    id:
+      type: string
+      label: 'ID'
+    label:
+      type: label
+      label: 'Label'
+    uuid:
+      type: string

src/Controller/HeartbeatController.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Drupal\heartbeat8\Controller;
+
+use Drupal\Core\Controller\ControllerBase;
+
+/**
+ * Class HeartbeatController.
+ *
+ * @package Drupal\heartbeat8\Controller
+ */
+class HeartbeatController extends ControllerBase {
+
+  /**
+   * Confirm.
+   *
+   * @return string
+   *   Return Hello string.
+   */
+  public function confirm($id) {
+    return [
+      '#type' => 'markup',
+      '#markup' => $this->t('Implement method: confirm with parameter(s): $id'),
+    ];
+  }
+
+
+  public function revisionOverview() {
+    return 0;
+  }
+
+  public function revisionShow() {
+    return 0;
+  }
+}

src/Entity/Heartbeat.php

@@ -0,0 +1,309 @@
+<?php
+
+namespace Drupal\heartbeat8\Entity;
+
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Field\BaseFieldDefinition;
+use Drupal\Core\Entity\RevisionableContentEntityBase;
+use Drupal\Core\Entity\EntityChangedTrait;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\user\UserInterface;
+
+/**
+ * Defines the Heartbeat entity.
+ *
+ * @ingroup heartbeat8
+ *
+ * @ContentEntityType(
+ *   id = "heartbeat",
+ *   label = @Translation("Heartbeat"),
+ *   bundle_label = @Translation("Heartbeat type"),
+ *   handlers = {
+ *     "storage" = "Drupal\heartbeat8\HeartbeatStorage",
+ *     "view_builder" = "Drupal\Core\Entity\EntityViewBuilder",
+ *     "list_builder" = "Drupal\heartbeat8\HeartbeatListBuilder",
+ *     "views_data" = "Drupal\heartbeat8\Entity\HeartbeatViewsData",
+ *     "translation" = "Drupal\heartbeat8\HeartbeatTranslationHandler",
+ *
+ *     "form" = {
+ *       "default" = "Drupal\heartbeat8\Form\HeartbeatForm",
+ *       "add" = "Drupal\heartbeat8\Form\HeartbeatForm",
+ *       "edit" = "Drupal\heartbeat8\Form\HeartbeatForm",
+ *       "delete" = "Drupal\heartbeat8\Form\HeartbeatDeleteForm",
+ *     },
+ *     "access" = "Drupal\heartbeat8\HeartbeatAccessControlHandler",
+ *     "route_provider" = {
+ *       "html" = "Drupal\heartbeat8\HeartbeatHtmlRouteProvider",
+ *     },
+ *   },
+ *   base_table = "heartbeat",
+ *   data_table = "heartbeat_field_data",
+ *   revision_table = "heartbeat_revision",
+ *   revision_data_table = "heartbeat_field_revision",
+ *   translatable = TRUE,
+ *   admin_permission = "administer heartbeat entities",
+ *   entity_keys = {
+ *     "id" = "id",
+ *     "revision" = "vid",
+ *     "bundle" = "type",
+ *     "label" = "name",
+ *     "uuid" = "uuid",
+ *     "uid" = "user_id",
+ *     "langcode" = "langcode",
+ *     "status" = "status",
+ *   },
+ *   links = {
+ *     "canonical" = "/admin/structure/heartbeat/{heartbeat}",
+ *     "add-page" = "/admin/structure/heartbeat/add",
+ *     "add-form" = "/admin/structure/heartbeat/add/{heartbeat_type}",
+ *     "edit-form" = "/admin/structure/heartbeat/{heartbeat}/edit",
+ *     "delete-form" = "/admin/structure/heartbeat/{heartbeat}/delete",
+ *     "version-history" = "/admin/structure/heartbeat/{heartbeat}/revisions",
+ *     "revision" = "/admin/structure/heartbeat/{heartbeat}/revisions/{heartbeat_revision}/view",
+ *     "revision_revert" = "/admin/structure/heartbeat/{heartbeat}/revisions/{heartbeat_revision}/revert",
+ *     "translation_revert" = "/admin/structure/heartbeat/{heartbeat}/revisions/{heartbeat_revision}/revert/{langcode}",
+ *     "revision_delete" = "/admin/structure/heartbeat/{heartbeat}/revisions/{heartbeat_revision}/delete",
+ *     "collection" = "/admin/structure/heartbeat",
+ *   },
+ *   bundle_entity_type = "heartbeat_type",
+ *   field_ui_base_route = "entity.heartbeat_type.edit_form"
+ * )
+ */
+class Heartbeat extends RevisionableContentEntityBase implements HeartbeatInterface {
+
+  use EntityChangedTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function preCreate(EntityStorageInterface $storage_controller, array &$values) {
+    parent::preCreate($storage_controller, $values);
+    $values += array(
+      'user_id' => \Drupal::currentUser()->id(),
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function preSave(EntityStorageInterface $storage) {
+    parent::preSave($storage);
+
+    foreach (array_keys($this->getTranslationLanguages()) as $langcode) {
+      $translation = $this->getTranslation($langcode);
+
+      // If no owner has been set explicitly, make the anonymous user the owner.
+      if (!$translation->getOwner()) {
+        $translation->setOwnerId(0);
+      }
+    }
+
+    // If no revision author has been set explicitly, make the heartbeat owner the
+    // revision author.
+    if (!$this->getRevisionUser()) {
+      $this->setRevisionUserId($this->getOwnerId());
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getType() {
+    return $this->bundle();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getName() {
+    return $this->get('name')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setName($name) {
+    $this->set('name', $name);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCreatedTime() {
+    return $this->get('created')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setCreatedTime($timestamp) {
+    $this->set('created', $timestamp);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getOwner() {
+    return $this->get('user_id')->entity;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getOwnerId() {
+    return $this->get('user_id')->target_id;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setOwnerId($uid) {
+    $this->set('user_id', $uid);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setOwner(UserInterface $account) {
+    $this->set('user_id', $account->id());
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isPublished() {
+    return (bool) $this->getEntityKey('status');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setPublished($published) {
+    $this->set('status', $published ? TRUE : FALSE);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRevisionCreationTime() {
+    return $this->get('revision_timestamp')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setRevisionCreationTime($timestamp) {
+    $this->set('revision_timestamp', $timestamp);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRevisionUser() {
+    return $this->get('revision_uid')->entity;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setRevisionUserId($uid) {
+    $this->set('revision_uid', $uid);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
+    $fields = parent::baseFieldDefinitions($entity_type);
+
+    $fields['user_id'] = BaseFieldDefinition::create('entity_reference')
+      ->setLabel(t('Authored by'))
+      ->setDescription(t('The user ID of author of the Heartbeat entity.'))
+      ->setRevisionable(TRUE)
+      ->setSetting('target_type', 'user')
+      ->setSetting('handler', 'default')
+      ->setTranslatable(TRUE)
+      ->setDisplayOptions('view', array(
+        'label' => 'hidden',
+        'type' => 'author',
+        'weight' => 0,
+      ))
+      ->setDisplayOptions('form', array(
+        'type' => 'entity_reference_autocomplete',
+        'weight' => 5,
+        'settings' => array(
+          'match_operator' => 'CONTAINS',
+          'size' => '60',
+          'autocomplete_type' => 'tags',
+          'placeholder' => '',
+        ),
+      ))
+      ->setDisplayConfigurable('form', TRUE)
+      ->setDisplayConfigurable('view', TRUE);
+
+    $fields['name'] = BaseFieldDefinition::create('string')
+      ->setLabel(t('Name'))
+      ->setDescription(t('The name of the Heartbeat entity.'))
+      ->setRevisionable(TRUE)
+      ->setSettings(array(
+        'max_length' => 50,
+        'text_processing' => 0,
+      ))
+      ->setDefaultValue('')
+      ->setDisplayOptions('view', array(
+        'label' => 'above',
+        'type' => 'string',
+        'weight' => -4,
+      ))
+      ->setDisplayOptions('form', array(
+        'type' => 'string_textfield',
+        'weight' => -4,
+      ))
+      ->setDisplayConfigurable('form', TRUE)
+      ->setDisplayConfigurable('view', TRUE);
+
+    $fields['status'] = BaseFieldDefinition::create('boolean')
+      ->setLabel(t('Publishing status'))
+      ->setDescription(t('A boolean indicating whether the Heartbeat is published.'))
+      ->setRevisionable(TRUE)
+      ->setDefaultValue(TRUE);
+
+    $fields['created'] = BaseFieldDefinition::create('created')
+      ->setLabel(t('Created'))
+      ->setDescription(t('The time that the entity was created.'));
+
+    $fields['changed'] = BaseFieldDefinition::create('changed')
+      ->setLabel(t('Changed'))
+      ->setDescription(t('The time that the entity was last edited.'));
+
+    $fields['revision_timestamp'] = BaseFieldDefinition::create('created')
+      ->setLabel(t('Revision timestamp'))
+      ->setDescription(t('The time that the current revision was created.'))
+      ->setQueryable(FALSE)
+      ->setRevisionable(TRUE);
+
+    $fields['revision_uid'] = BaseFieldDefinition::create('entity_reference')
+      ->setLabel(t('Revision user ID'))
+      ->setDescription(t('The user ID of the author of the current revision.'))
+      ->setSetting('target_type', 'user')
+      ->setQueryable(FALSE)
+      ->setRevisionable(TRUE);
+
+    $fields['revision_translation_affected'] = BaseFieldDefinition::create('boolean')
+      ->setLabel(t('Revision translation affected'))
+      ->setDescription(t('Indicates if the last edit of a translation belongs to current revision.'))
+      ->setReadOnly(TRUE)
+      ->setRevisionable(TRUE)
+      ->setTranslatable(TRUE);
+
+    return $fields;
+  }
+
+}

src/Entity/HeartbeatInterface.php

@@ -0,0 +1,126 @@
+<?php
+
+namespace Drupal\heartbeat8\Entity;
+
+use Drupal\Core\Entity\RevisionLogInterface;
+use Drupal\Core\Entity\RevisionableInterface;
+use Drupal\Component\Utility\Xss;
+use Drupal\Core\Url;
+use Drupal\Core\Entity\EntityChangedInterface;
+use Drupal\user\EntityOwnerInterface;
+
+/**
+ * Provides an interface for defining Heartbeat entities.
+ *
+ * @ingroup heartbeat8
+ */
+interface HeartbeatInterface extends RevisionableInterface, RevisionLogInterface, EntityChangedInterface, EntityOwnerInterface {
+
+  // Add get/set methods for your configuration properties here.
+
+  /**
+   * Gets the Heartbeat type.
+   *
+   * @return string
+   *   The Heartbeat type.
+   */
+  public function getType();
+
+  /**
+   * Gets the Heartbeat name.
+   *
+   * @return string
+   *   Name of the Heartbeat.
+   */
+  public function getName();
+
+  /**
+   * Sets the Heartbeat name.
+   *
+   * @param string $name
+   *   The Heartbeat name.
+   *
+   * @return \Drupal\heartbeat8\Entity\HeartbeatInterface
+   *   The called Heartbeat entity.
+   */
+  public function setName($name);
+
+  /**
+   * Gets the Heartbeat creation timestamp.
+   *
+   * @return int
+   *   Creation timestamp of the Heartbeat.
+   */
+  public function getCreatedTime();
+
+  /**
+   * Sets the Heartbeat creation timestamp.
+   *
+   * @param int $timestamp
+   *   The Heartbeat creation timestamp.
+   *
+   * @return \Drupal\heartbeat8\Entity\HeartbeatInterface
+   *   The called Heartbeat entity.
+   */
+  public function setCreatedTime($timestamp);
+
+  /**
+   * Returns the Heartbeat published status indicator.
+   *
+   * Unpublished Heartbeat are only visible to restricted users.
+   *
+   * @return bool
+   *   TRUE if the Heartbeat is published.
+   */
+  public function isPublished();
+
+  /**
+   * Sets the published status of a Heartbeat.
+   *
+   * @param bool $published
+   *   TRUE to set this Heartbeat to published, FALSE to set it to unpublished.
+   *
+   * @return \Drupal\heartbeat8\Entity\HeartbeatInterface
+   *   The called Heartbeat entity.
+   */
+  public function setPublished($published);
+
+  /**
+   * Gets the Heartbeat revision creation timestamp.
+   *
+   * @return int
+   *   The UNIX timestamp of when this revision was created.
+   */
+  public function getRevisionCreationTime();
+
+  /**
+   * Sets the Heartbeat revision creation timestamp.
+   *
+   * @param int $timestamp
+   *   The UNIX timestamp of when this revision was created.
+   *
+   * @return \Drupal\heartbeat8\Entity\HeartbeatInterface
+   *   The called Heartbeat entity.
+   */
+  public function setRevisionCreationTime($timestamp);
+
+  /**
+   * Gets the Heartbeat revision author.
+   *
+   * @return \Drupal\user\UserInterface
+   *   The user entity for the revision author.
+   */
+  public function getRevisionUser();
+
+  /**
+   * Sets the Heartbeat revision author.
+   *
+   * @param int $uid
+   *   The user ID of the revision author.
+   *
+   * @return \Drupal\heartbeat8\Entity\HeartbeatInterface
+   *   The called Heartbeat entity.
+   */
+  public function setRevisionUserId($uid);
+
+}

src/Entity/HeartbeatType.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Drupal\heartbeat8\Entity;
+
+use Drupal\Core\Config\Entity\ConfigEntityBundleBase;
+
+/**
+ * Defines the Heartbeat type entity.
+ *
+ * @ConfigEntityType(
+ *   id = "heartbeat_type",
+ *   label = @Translation("Heartbeat type"),
+ *   handlers = {
+ *     "list_builder" = "Drupal\heartbeat8\HeartbeatTypeListBuilder",
+ *     "form" = {
+ *       "add" = "Drupal\heartbeat8\Form\HeartbeatTypeForm",
+ *       "edit" = "Drupal\heartbeat8\Form\HeartbeatTypeForm",
+ *       "delete" = "Drupal\heartbeat8\Form\HeartbeatTypeDeleteForm"
+ *     },
+ *     "route_provider" = {
+ *       "html" = "Drupal\heartbeat8\HeartbeatTypeHtmlRouteProvider",
+ *     },
+ *   },
+ *   config_prefix = "heartbeat_type",
+ *   admin_permission = "administer site configuration",
+ *   bundle_of = "heartbeat",
+ *   entity_keys = {
+ *     "id" = "id",
+ *     "label" = "label",
+ *     "uuid" = "uuid"
+ *   },
+ *   links = {
+ *     "canonical" = "/admin/structure/heartbeat_type/{heartbeat_type}",
+ *     "add-form" = "/admin/structure/heartbeat_type/add",
+ *     "edit-form" = "/admin/structure/heartbeat_type/{heartbeat_type}/edit",
+ *     "delete-form" = "/admin/structure/heartbeat_type/{heartbeat_type}/delete",
+ *     "collection" = "/admin/structure/heartbeat_type"
+ *   }
+ * )
+ */
+class HeartbeatType extends ConfigEntityBundleBase implements HeartbeatTypeInterface {
+
+  /**
+   * The Heartbeat type ID.
+   *
+   * @var string
+   */
+  protected $id;
+
+  /**
+   * The Heartbeat type label.
+   *
+   * @var string
+   */
+  protected $label;
+
+}

src/Entity/HeartbeatTypeInterface.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Drupal\heartbeat8\Entity;
+
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
+
+/**
+ * Provides an interface for defining Heartbeat type entities.
+ */
+interface HeartbeatTypeInterface extends ConfigEntityInterface {
+
+  // Add get/set methods for your configuration properties here.
+}

src/Entity/HeartbeatViewsData.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Drupal\heartbeat8\Entity;
+
+use Drupal\views\EntityViewsData;
+
+/**
+ * Provides Views data for Heartbeat entities.
+ */
+class HeartbeatViewsData extends EntityViewsData {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getViewsData() {
+    $data = parent::getViewsData();
+
+    // Additional information for Views integration, such as table joins, can be
+    // put here.
+
+    return $data;
+  }
+
+}

src/Form/HeartbeatDeleteForm.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Drupal\heartbeat8\Form;
+
+use Drupal\Core\Entity\ContentEntityDeleteForm;
+
+/**
+ * Provides a form for deleting Heartbeat entities.
+ *
+ * @ingroup heartbeat8
+ */
+class HeartbeatDeleteForm extends ContentEntityDeleteForm {
+
+
+}

src/Form/HeartbeatForm.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Drupal\heartbeat8\Form;
+
+use Drupal\Core\Entity\ContentEntityForm;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Form controller for Heartbeat edit forms.
+ *
+ * @ingroup heartbeat8
+ */
+class HeartbeatForm extends ContentEntityForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    /* @var $entity \Drupal\heartbeat8\Entity\Heartbeat */
+    $form = parent::buildForm($form, $form_state);
+
+    if (!$this->entity->isNew()) {
+      $form['new_revision'] = array(
+        '#type' => 'checkbox',
+        '#title' => $this->t('Create new revision'),
+        '#default_value' => FALSE,
+        '#weight' => 10,
+      );
+    }
+
+    $entity = $this->entity;
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    $entity = &$this->entity;
+
+    // Save as a new revision if requested to do so.
+    if (!$form_state->isValueEmpty('new_revision') && $form_state->getValue('new_revision') != FALSE) {
+      $entity->setNewRevision();
+
+      // If a new revision is created, save the current user as revision author.
+      $entity->setRevisionCreationTime(REQUEST_TIME);
+      $entity->setRevisionUserId(\Drupal::currentUser()->id());
+    }
+    else {
+      $entity->setNewRevision(FALSE);
+    }
+
+    $status = parent::save($form, $form_state);
+
+    switch ($status) {
+      case SAVED_NEW:
+        drupal_set_message($this->t('Created the %label Heartbeat.', [
+          '%label' => $entity->label(),
+        ]));
+        break;
+
+      default:
+        drupal_set_message($this->t('Saved the %label Heartbeat.', [
+          '%label' => $entity->label(),
+        ]));
+    }
+    $form_state->setRedirect('entity.heartbeat.canonical', ['heartbeat' => $entity->id()]);
+  }
+
+}

src/Form/HeartbeatRevisionDeleteForm.php

@@ -0,0 +1,123 @@
+<?php
+
+namespace Drupal\heartbeat8\Form;
+
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for deleting a Heartbeat revision.
+ *
+ * @ingroup heartbeat8
+ */
+class HeartbeatRevisionDeleteForm extends ConfirmFormBase {
+
+
+  /**
+   * The Heartbeat revision.
+   *
+   * @var \Drupal\heartbeat8\Entity\HeartbeatInterface
+   */
+  protected $revision;
+
+  /**
+   * The Heartbeat storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $HeartbeatStorage;
+
+  /**
+   * The database connection.
+   *
+   * @var \Drupal\Core\Database\Connection
+   */
+  protected $connection;
+
+  /**
+   * Constructs a new HeartbeatRevisionDeleteForm.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $entity_storage
+   *   The entity storage.
+   * @param \Drupal\Core\Database\Connection $connection
+   *   The database connection.
+   */
+  public function __construct(EntityStorageInterface $entity_storage, Connection $connection) {
+    $this->HeartbeatStorage = $entity_storage;
+    $this->connection = $connection;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    $entity_manager = $container->get('entity.manager');
+    return new static(
+      $entity_manager->getStorage('heartbeat'),
+      $container->get('database')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'heartbeat_revision_delete_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return t('Are you sure you want to delete the revision from %revision-date?', array('%revision-date' => format_date($this->revision->getRevisionCreationTime())));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('entity.heartbeat.version_history', array('heartbeat' => $this->revision->id()));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return t('Delete');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, $heartbeat_revision = NULL) {
+    $this->revision = $this->HeartbeatStorage->loadRevision($heartbeat_revision);
+    $form = parent::buildForm($form, $form_state);
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $this->HeartbeatStorage->deleteRevision($this->revision->getRevisionId());
+
+    $this->logger('content')->notice('Heartbeat: deleted %title revision %revision.', array('%title' => $this->revision->label(), '%revision' => $this->revision->getRevisionId()));
+    drupal_set_message(t('Revision from %revision-date of Heartbeat %title has been deleted.', array('%revision-date' => format_date($this->revision->getRevisionCreationTime()), '%title' => $this->revision->label())));
+    $form_state->setRedirect(
+      'entity.heartbeat.canonical',
+       array('heartbeat' => $this->revision->id())
+    );
+    if ($this->connection->query('SELECT COUNT(DISTINCT vid) FROM {heartbeat_field_revision} WHERE id = :id', array(':id' => $this->revision->id()))->fetchField() > 1) {
+      $form_state->setRedirect(
+        'entity.heartbeat.version_history',
+         array('heartbeat' => $this->revision->id())
+      );
+    }
+  }
+
+}

src/Form/HeartbeatRevisionRevertForm.php

@@ -0,0 +1,149 @@
+<?php
+
+namespace Drupal\heartbeat8\Form;
+
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\heartbeat8\Entity\HeartbeatInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for reverting a Heartbeat revision.
+ *
+ * @ingroup heartbeat8
+ */
+class HeartbeatRevisionRevertForm extends ConfirmFormBase {
+
+
+  /**
+   * The Heartbeat revision.
+   *
+   * @var \Drupal\heartbeat8\Entity\HeartbeatInterface
+   */
+  protected $revision;
+
+  /**
+   * The Heartbeat storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $HeartbeatStorage;
+
+  /**
+   * The date formatter service.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * Constructs a new HeartbeatRevisionRevertForm.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $entity_storage
+   *   The Heartbeat storage.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   */
+  public function __construct(EntityStorageInterface $entity_storage, DateFormatterInterface $date_formatter) {
+    $this->HeartbeatStorage = $entity_storage;
+    $this->dateFormatter = $date_formatter;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity.manager')->getStorage('heartbeat'),
+      $container->get('date.formatter')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'heartbeat_revision_revert_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return t('Are you sure you want to revert to the revision from %revision-date?', ['%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime())]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('entity.heartbeat.version_history', array('heartbeat' => $this->revision->id()));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return t('Revert');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, $heartbeat_revision = NULL) {
+    $this->revision = $this->HeartbeatStorage->loadRevision($heartbeat_revision);
+    $form = parent::buildForm($form, $form_state);
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // The revision timestamp will be updated when the revision is saved. Keep
+    // the original one for the confirmation message.
+    $original_revision_timestamp = $this->revision->getRevisionCreationTime();
+
+    $this->revision = $this->prepareRevertedRevision($this->revision, $form_state);
+    $this->revision->revision_log = t('Copy of the revision from %date.', ['%date' => $this->dateFormatter->format($original_revision_timestamp)]);
+    $this->revision->save();
+
+    $this->logger('content')->notice('Heartbeat: reverted %title revision %revision.', ['%title' => $this->revision->label(), '%revision' => $this->revision->getRevisionId()]);
+    drupal_set_message(t('Heartbeat %title has been reverted to the revision from %revision-date.', ['%title' => $this->revision->label(), '%revision-date' => $this->dateFormatter->format($original_revision_timestamp)]));
+    $form_state->setRedirect(
+      'entity.heartbeat.version_history',
+      array('heartbeat' => $this->revision->id())
+    );
+  }
+
+  /**
+   * Prepares a revision to be reverted.
+   *
+   * @param \Drupal\heartbeat8\Entity\HeartbeatInterface $revision
+   *   The revision to be reverted.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   *
+   * @return \Drupal\heartbeat8\Entity\HeartbeatInterface
+   *   The prepared revision ready to be stored.
+   */
+  protected function prepareRevertedRevision(HeartbeatInterface $revision, FormStateInterface $form_state) {
+    $revision->setNewRevision();
+    $revision->isDefaultRevision(TRUE);
+    $revision->setRevisionCreationTime(REQUEST_TIME);
+
+    return $revision;
+  }
+
+}

src/Form/HeartbeatRevisionRevertTranslationForm.php

@@ -0,0 +1,115 @@
+<?php
+
+namespace Drupal\heartbeat8\Form;
+
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\heartbeat8\Entity\HeartbeatInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for reverting a Heartbeat revision for a single translation.
+ *
+ * @ingroup heartbeat8
+ */
+class HeartbeatRevisionRevertTranslationForm extends HeartbeatRevisionRevertForm {
+
+
+  /**
+   * The language to be reverted.
+   *
+   * @var string
+   */
+  protected $langcode;
+
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * Constructs a new HeartbeatRevisionRevertTranslationForm.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $entity_storage
+   *   The Heartbeat storage.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+   *   The language manager.
+   */
+  public function __construct(EntityStorageInterface $entity_storage, DateFormatterInterface $date_formatter, LanguageManagerInterface $language_manager) {
+    parent::__construct($entity_storage, $date_formatter);
+    $this->languageManager = $language_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity.manager')->getStorage('heartbeat'),
+      $container->get('date.formatter'),
+      $container->get('language_manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'heartbeat_revision_revert_translation_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return t('Are you sure you want to revert @language translation to the revision from %revision-date?', ['@language' => $this->languageManager->getLanguageName($this->langcode), '%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime())]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, $heartbeat_revision = NULL, $langcode = NULL) {
+    $this->langcode = $langcode;
+    $form = parent::buildForm($form, $form_state, $heartbeat_revision);
+
+    $form['revert_untranslated_fields'] = array(
+      '#type' => 'checkbox',
+      '#title' => $this->t('Revert content shared among translations'),
+      '#default_value' => FALSE,
+    );
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function prepareRevertedRevision(HeartbeatInterface $revision, FormStateInterface $form_state) {
+    $revert_untranslated_fields = $form_state->getValue('revert_untranslated_fields');
+
+    /** @var \Drupal\heartbeat8\Entity\HeartbeatInterface $default_revision */
+    $latest_revision = $this->HeartbeatStorage->load($revision->id());
+    $latest_revision_translation = $latest_revision->getTranslation($this->langcode);
+
+    $revision_translation = $revision->getTranslation($this->langcode);
+
+    foreach ($latest_revision_translation->getFieldDefinitions() as $field_name => $definition) {
+      if ($definition->isTranslatable() || $revert_untranslated_fields) {
+        $latest_revision_translation->set($field_name, $revision_translation->get($field_name)->getValue());
+      }
+    }
+
+    $latest_revision_translation->setNewRevision();
+    $latest_revision_translation->isDefaultRevision(TRUE);
+    $revision->setRevisionCreationTime(REQUEST_TIME);
+
+    return $latest_revision_translation;
+  }
+
+}

src/Form/HeartbeatSettingsForm.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Drupal\heartbeat8\Form;
+
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Class HeartbeatSettingsForm.
+ *
+ * @package Drupal\heartbeat8\Form
+ *
+ * @ingroup heartbeat8
+ */
+class HeartbeatSettingsForm extends FormBase {
+
+  /**
+   * Returns a unique string identifying the form.
+   *
+   * @return string
+   *   The unique string identifying the form.
+   */
+  public function getFormId() {
+    return 'Heartbeat_settings';
+  }
+
+  /**
+   * Form submission handler.
+   *
+   * @param array $form
+   *   An associative array containing the structure of the form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // Empty implementation of the abstract submit class.
+  }
+
+  /**
+   * Defines the settings form for Heartbeat entities.
+   *
+   * @param array $form
+   *   An associative array containing the structure of the form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   *
+   * @return array
+   *   Form definition array.
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $form['Heartbeat_settings']['#markup'] = 'Settings form for Heartbeat entities. Manage field settings here.';
+    return $form;
+  }
+
+}

src/Form/HeartbeatTypeDeleteForm.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Drupal\heartbeat8\Form;
+
+use Drupal\Core\Entity\EntityConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+
+/**
+ * Builds the form to delete Heartbeat type entities.
+ */
+class HeartbeatTypeDeleteForm 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.heartbeat_type.collection');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return $this->t('Delete');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $this->entity->delete();
+
+    drupal_set_message(
+      $this->t('content @type: deleted @label.',
+        [
+          '@type' => $this->entity->bundle(),
+          '@label' => $this->entity->label(),
+        ]
+        )
+    );
+
+    $form_state->setRedirectUrl($this->getCancelUrl());
+  }
+
+}

src/Form/HeartbeatTypeForm.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace Drupal\heartbeat8\Form;
+
+use Drupal\Core\Entity\EntityForm;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Class HeartbeatTypeForm.
+ *
+ * @package Drupal\heartbeat8\Form
+ */
+class HeartbeatTypeForm extends EntityForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function form(array $form, FormStateInterface $form_state) {
+    $form = parent::form($form, $form_state);
+
+    $heartbeat_type = $this->entity;
+    $form['label'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Label'),
+      '#maxlength' => 255,
+      '#default_value' => $heartbeat_type->label(),
+      '#description' => $this->t("Label for the Heartbeat type."),
+      '#required' => TRUE,
+    ];
+
+    $form['id'] = [
+      '#type' => 'machine_name',
+      '#default_value' => $heartbeat_type->id(),
+      '#machine_name' => [
+        'exists' => '\Drupal\heartbeat8\Entity\HeartbeatType::load',
+      ],
+      '#disabled' => !$heartbeat_type->isNew(),
+    ];
+
+    /* You will need additional form elements for your custom properties. */
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    $heartbeat_type = $this->entity;
+    $status = $heartbeat_type->save();
+
+    switch ($status) {
+      case SAVED_NEW:
+        drupal_set_message($this->t('Created the %label Heartbeat type.', [
+          '%label' => $heartbeat_type->label(),
+        ]));
+        break;
+
+      default:
+        drupal_set_message($this->t('Saved the %label Heartbeat type.', [
+          '%label' => $heartbeat_type->label(),
+        ]));
+    }
+    $form_state->setRedirectUrl($heartbeat_type->toUrl('collection'));
+  }
+
+}

src/HeartbeatAccessControlHandler.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Drupal\heartbeat8;
+
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Access\AccessResult;
+
+/**
+ * Access controller for the Heartbeat entity.
+ *
+ * @see \Drupal\heartbeat8\Entity\Heartbeat.
+ */
+class HeartbeatAccessControlHandler extends EntityAccessControlHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+    /** @var \Drupal\heartbeat8\Entity\HeartbeatInterface $entity */
+    switch ($operation) {
+      case 'view':
+        if (!$entity->isPublished()) {
+          return AccessResult::allowedIfHasPermission($account, 'view unpublished heartbeat entities');
+        }
+        return AccessResult::allowedIfHasPermission($account, 'view published heartbeat entities');
+
+      case 'update':
+        return AccessResult::allowedIfHasPermission($account, 'edit heartbeat entities');
+
+      case 'delete':
+        return AccessResult::allowedIfHasPermission($account, 'delete heartbeat entities');
+    }
+
+    // Unknown operation, no opinion.
+    return AccessResult::neutral();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkCreateAccess(AccountInterface $account, array $context, $entity_bundle = NULL) {
+    return AccessResult::allowedIfHasPermission($account, 'add heartbeat entities');
+  }
+
+}

src/HeartbeatHtmlRouteProvider.php

@@ -0,0 +1,225 @@
+<?php
+
+namespace Drupal\heartbeat8;
+
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Entity\Routing\AdminHtmlRouteProvider;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Provides routes for Heartbeat entities.
+ *
+ * @see Drupal\Core\Entity\Routing\AdminHtmlRouteProvider
+ * @see Drupal\Core\Entity\Routing\DefaultHtmlRouteProvider
+ */
+class HeartbeatHtmlRouteProvider extends AdminHtmlRouteProvider {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRoutes(EntityTypeInterface $entity_type) {
+    $collection = parent::getRoutes($entity_type);
+
+    $entity_type_id = $entity_type->id();
+
+    if ($collection_route = $this->getCollectionRoute($entity_type)) {
+      $collection->add("entity.{$entity_type_id}.collection", $collection_route);
+    }
+
+    if ($history_route = $this->getHistoryRoute($entity_type)) {
+      $collection->add("entity.{$entity_type_id}.version_history", $history_route);
+    }
+
+    if ($revision_route = $this->getRevisionRoute($entity_type)) {
+      $collection->add("entity.{$entity_type_id}.revision", $revision_route);
+    }
+
+    if ($revert_route = $this->getRevisionRevertRoute($entity_type)) {
+      $collection->add("entity.{$entity_type_id}.revision_revert", $revert_route);
+    }
+
+    if ($delete_route = $this->getRevisionDeleteRoute($entity_type)) {
+      $collection->add("entity.{$entity_type_id}.revision_delete", $delete_route);
+    }
+
+    if ($translation_route = $this->getRevisionTranslationRevertRoute($entity_type)) {
+      $collection->add("{$entity_type_id}.revision_revert_translation_confirm", $translation_route);
+    }
+
+    if ($settings_form_route = $this->getSettingsFormRoute($entity_type)) {
+      $collection->add("$entity_type_id.settings", $settings_form_route);
+    }
+
+    return $collection;
+  }
+
+  /**
+   * Gets the collection route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getCollectionRoute(EntityTypeInterface $entity_type) {
+    if ($entity_type->hasLinkTemplate('collection') && $entity_type->hasListBuilderClass()) {
+      $entity_type_id = $entity_type->id();
+      $route = new Route($entity_type->getLinkTemplate('collection'));
+      $route
+        ->setDefaults([
+          '_entity_list' => $entity_type_id,
+          '_title' => "{$entity_type->getLabel()} list",
+        ])
+        ->setRequirement('_permission', 'access heartbeat overview')
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+  /**
+   * Gets the version history route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getHistoryRoute(EntityTypeInterface $entity_type) {
+    if ($entity_type->hasLinkTemplate('version-history')) {
+      $route = new Route($entity_type->getLinkTemplate('version-history'));
+      $route
+        ->setDefaults([
+          '_title' => "{$entity_type->getLabel()} revisions",
+          '_controller' => '\Drupal\heartbeat8\Controller\HeartbeatController::revisionOverview',
+        ])
+        ->setRequirement('_permission', 'access heartbeat revisions')
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+  /**
+   * Gets the revision route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getRevisionRoute(EntityTypeInterface $entity_type) {
+    if ($entity_type->hasLinkTemplate('revision')) {
+      $route = new Route($entity_type->getLinkTemplate('revision'));
+      $route
+        ->setDefaults([
+          '_controller' => '\Drupal\heartbeat8\Controller\HeartbeatController::revisionShow',
+          '_title_callback' => '\Drupal\heartbeat8\Controller\HeartbeatController::revisionPageTitle',
+        ])
+        ->setRequirement('_permission', 'access heartbeat revisions')
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+  /**
+   * Gets the revision revert route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getRevisionRevertRoute(EntityTypeInterface $entity_type) {
+    if ($entity_type->hasLinkTemplate('revision_revert')) {
+      $route = new Route($entity_type->getLinkTemplate('revision_revert'));
+      $route
+        ->setDefaults([
+          '_form' => '\Drupal\heartbeat8\Form\HeartbeatRevisionRevertForm',
+          '_title' => 'Revert to earlier revision',
+        ])
+        ->setRequirement('_permission', 'revert all heartbeat revisions')
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+  /**
+   * Gets the revision delete route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getRevisionDeleteRoute(EntityTypeInterface $entity_type) {
+    if ($entity_type->hasLinkTemplate('revision_delete')) {
+      $route = new Route($entity_type->getLinkTemplate('revision_delete'));
+      $route
+        ->setDefaults([
+          '_form' => '\Drupal\heartbeat8\Form\HeartbeatRevisionDeleteForm',
+          '_title' => 'Delete earlier revision',
+        ])
+        ->setRequirement('_permission', 'delete all heartbeat revisions')
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+  /**
+   * Gets the revision translation revert route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getRevisionTranslationRevertRoute(EntityTypeInterface $entity_type) {
+    if ($entity_type->hasLinkTemplate('translation_revert')) {
+      $route = new Route($entity_type->getLinkTemplate('translation_revert'));
+      $route
+        ->setDefaults([
+          '_form' => '\Drupal\heartbeat8\Form\HeartbeatRevisionRevertTranslationForm',
+          '_title' => 'Revert to earlier revision of a translation',
+        ])
+        ->setRequirement('_permission', 'revert all heartbeat revisions')
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+  /**
+   * Gets the settings form route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getSettingsFormRoute(EntityTypeInterface $entity_type) {
+    if (!$entity_type->getBundleEntityType()) {
+      $route = new Route("/admin/structure/{$entity_type->id()}/settings");
+      $route
+        ->setDefaults([
+          '_form' => 'Drupal\heartbeat8\Form\HeartbeatSettingsForm',
+          '_title' => "{$entity_type->getLabel()} settings",
+        ])
+        ->setRequirement('_permission', $entity_type->getAdminPermission())
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+}

src/HeartbeatListBuilder.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace Drupal\heartbeat8;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityListBuilder;
+use Drupal\Core\Routing\LinkGeneratorTrait;
+use Drupal\Core\Url;
+
+/**
+ * Defines a class to build a listing of Heartbeat entities.
+ *
+ * @ingroup heartbeat8
+ */
+class HeartbeatListBuilder extends EntityListBuilder {
+
+  use LinkGeneratorTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildHeader() {
+    $header['id'] = $this->t('Heartbeat ID');
+    $header['name'] = $this->t('Name');
+    return $header + parent::buildHeader();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildRow(EntityInterface $entity) {
+    /* @var $entity \Drupal\heartbeat8\Entity\Heartbeat */
+    $row['id'] = $entity->id();
+    $row['name'] = $this->l(
+      $entity->label(),
+      new Url(
+        'entity.heartbeat.edit_form', array(
+          'heartbeat' => $entity->id(),
+        )
+      )
+    );
+    return $row + parent::buildRow($entity);
+  }
+
+}

src/HeartbeatStorage.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Drupal\heartbeat8;
+
+use Drupal\Core\Entity\Sql\SqlContentEntityStorage;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\heartbeat8\Entity\HeartbeatInterface;
+
+/**
+ * Defines the storage handler class for Heartbeat entities.
+ *
+ * This extends the base storage class, adding required special handling for
+ * Heartbeat entities.
+ *
+ * @ingroup heartbeat8
+ */
+class HeartbeatStorage extends SqlContentEntityStorage implements HeartbeatStorageInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function revisionIds(HeartbeatInterface $entity) {
+    return $this->database->query(
+      'SELECT vid FROM {heartbeat_revision} WHERE id=:id ORDER BY vid',
+      array(':id' => $entity->id())
+    )->fetchCol();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function userRevisionIds(AccountInterface $account) {
+    return $this->database->query(
+      'SELECT vid FROM {heartbeat_field_revision} WHERE uid = :uid ORDER BY vid',
+      array(':uid' => $account->id())
+    )->fetchCol();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function countDefaultLanguageRevisions(HeartbeatInterface $entity) {
+    return $this->database->query('SELECT COUNT(*) FROM {heartbeat_field_revision} WHERE id = :id AND default_langcode = 1', array(':id' => $entity->id()))
+      ->fetchField();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function clearRevisionsLanguage(LanguageInterface $language) {
+    return $this->database->update('heartbeat_revision')
+      ->fields(array('langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED))
+      ->condition('langcode', $language->getId())
+      ->execute();
+  }
+
+}

src/HeartbeatStorageInterface.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace Drupal\heartbeat8;
+
+use Drupal\Core\Entity\ContentEntityStorageInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\heartbeat8\Entity\HeartbeatInterface;
+
+/**
+ * Defines the storage handler class for Heartbeat entities.
+ *
+ * This extends the base storage class, adding required special handling for
+ * Heartbeat entities.
+ *
+ * @ingroup heartbeat8
+ */
+interface HeartbeatStorageInterface extends ContentEntityStorageInterface {
+
+  /**
+   * Gets a list of Heartbeat revision IDs for a specific Heartbeat.
+   *
+   * @param \Drupal\heartbeat8\Entity\HeartbeatInterface $entity
+   *   The Heartbeat entity.
+   *
+   * @return int[]
+   *   Heartbeat revision IDs (in ascending order).
+   */
+  public function revisionIds(HeartbeatInterface $entity);
+
+  /**
+   * Gets a list of revision IDs having a given user as Heartbeat author.
+   *
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   The user entity.
+   *
+   * @return int[]
+   *   Heartbeat revision IDs (in ascending order).
+   */
+  public function userRevisionIds(AccountInterface $account);
+
+  /**
+   * Counts the number of revisions in the default language.
+   *
+   * @param \Drupal\heartbeat8\Entity\HeartbeatInterface $entity
+   *   The Heartbeat entity.
+   *
+   * @return int
+   *   The number of revisions in the default language.
+   */
+  public function countDefaultLanguageRevisions(HeartbeatInterface $entity);
+
+  /**
+   * Unsets the language for all Heartbeat with the given language.
+   *
+   * @param \Drupal\Core\Language\LanguageInterface $language
+   *   The language object.
+   */
+  public function clearRevisionsLanguage(LanguageInterface $language);
+
+}

src/HeartbeatTranslationHandler.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Drupal\heartbeat8;
+
+use Drupal\content_translation\ContentTranslationHandler;
+
+/**
+ * Defines the translation handler for heartbeat.
+ */
+class HeartbeatTranslationHandler extends ContentTranslationHandler {
+
+  // Override here the needed methods from ContentTranslationHandler.
+
+}

src/HeartbeatTypeHtmlRouteProvider.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Drupal\heartbeat8;
+
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Entity\Routing\AdminHtmlRouteProvider;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Provides routes for Heartbeat type entities.
+ *
+ * @see Drupal\Core\Entity\Routing\AdminHtmlRouteProvider
+ * @see Drupal\Core\Entity\Routing\DefaultHtmlRouteProvider
+ */
+class HeartbeatTypeHtmlRouteProvider extends AdminHtmlRouteProvider {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRoutes(EntityTypeInterface $entity_type) {
+    $collection = parent::getRoutes($entity_type);
+
+    $entity_type_id = $entity_type->id();
+
+    if ($collection_route = $this->getCollectionRoute($entity_type)) {
+      $collection->add("entity.{$entity_type_id}.collection", $collection_route);
+    }
+
+    return $collection;
+  }
+
+  /**
+   * Gets the collection route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getCollectionRoute(EntityTypeInterface $entity_type) {
+    if ($entity_type->hasLinkTemplate('collection') && $entity_type->hasListBuilderClass()) {
+      $entity_type_id = $entity_type->id();
+      $route = new Route($entity_type->getLinkTemplate('collection'));
+      $route
+        ->setDefaults([
+          '_entity_list' => $entity_type_id,
+          // Make sure this is not a TranslatableMarkup object as the
+          // TitleResolver translates this string again.
+          '_title' => (string) $entity_type->getLabel(),
+        ])
+        ->setRequirement('_permission', $entity_type->getAdminPermission())
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+}

src/HeartbeatTypeListBuilder.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Drupal\heartbeat8;
+
+use Drupal\Core\Config\Entity\ConfigEntityListBuilder;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Provides a listing of Heartbeat type entities.
+ */
+class HeartbeatTypeListBuilder extends ConfigEntityListBuilder {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildHeader() {
+    $header['label'] = $this->t('Heartbeat type');
+    $header['id'] = $this->t('Machine name');
+    return $header + parent::buildHeader();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildRow(EntityInterface $entity) {
+    $row['label'] = $entity->label();
+    $row['id'] = $entity->id();
+    // You probably want a few more properties here...
+    return $row + parent::buildRow($entity);
+  }
+
+}

src/Tests/LoadTest.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace Drupal\heartbeat8\Tests;
+
+use Drupal\Core\Url;
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Simple test to ensure that main page loads with module enabled.
+ *
+ * @group heartbeat8
+ */
+class LoadTest extends WebTestBase{
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['heartbeat8'];
+
+  /**
+   * A user with permission to administer site configuration.
+   *
+   * @var \Drupal\user\UserInterface
+   */
+  protected $user;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->user = $this->drupalCreateUser(['administer site configuration']);
+    $this->drupalLogin($this->user);
+  }
+
+  /**
+   * Tests that the home page loads with a 200 response.
+   */
+  public function testLoad() {
+    $this->drupalGet(Url::fromRoute('<front>'));
+    $this->assertResponse(200);
+  }
+
+}

templates/heartbeat-content-add-list.html.twig

@@ -0,0 +1,23 @@
+{#
+/**
+ * @file
+ * Default theme implementation to present a list of custom content entity types/bundles.
+ *
+ * Available variables:
+ * - types: A collection of all the available custom entity types/bundles.
+ *   Each type/bundle contains the following:
+ *   - link: A link to add a content entity of this type.
+ *   - description: A description of this content entity types/bundle.
+ *
+ * @see template_preprocess_heartbeat_content_add_list()
+ *
+ * @ingroup themeable
+ */
+#}
+{% spaceless %}
+  <dl>
+    {% for type in types %}
+      <dt>{{ type.link }}</dt>
+    {% endfor %}
+  </dl>
+{% endspaceless %}

templates/heartbeat.html.twig

@@ -0,0 +1,22 @@
+{#
+/**
+ * @file heartbeat.html.twig
+ * Default theme implementation to present Heartbeat data.
+ *
+ * This template is used when viewing Heartbeat pages.
+ *
+ *
+ * Available variables:
+ * - content: A list of content items. Use 'content' to print all content, or
+ * - attributes: HTML attributes for the container element.
+ *
+ * @see template_preprocess_heartbeat()
+ *
+ * @ingroup themeable
+ */
+#}
+<div{{ attributes.addClass('heartbeat') }}>
+  {% if content %}
+    {{- content -}}
+  {% endif %}
+</div>

templates/heartbeat8.html.twig

@@ -0,0 +1 @@
+<!-- Add you custom twig html here -->