diff core/lib/Drupal/Core/Entity/EntityDisplayBase.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Entity/EntityDisplayBase.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,598 @@
+<?php
+
+namespace Drupal\Core\Entity;
+
+use Drupal\Core\Config\Entity\ConfigEntityBase;
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
+use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\Entity\Display\EntityDisplayInterface;
+
+/**
+ * Provides a common base class for entity view and form displays.
+ */
+abstract class EntityDisplayBase extends ConfigEntityBase implements EntityDisplayInterface {
+
+  /**
+   * The 'mode' for runtime EntityDisplay objects used to render entities with
+   * arbitrary display options rather than a configured view mode or form mode.
+   *
+   * @todo Prevent creation of a mode with this ID
+   *   https://www.drupal.org/node/2410727
+   */
+  const CUSTOM_MODE = '_custom';
+
+  /**
+   * Unique ID for the config entity.
+   *
+   * @var string
+   */
+  protected $id;
+
+  /**
+   * Entity type to be displayed.
+   *
+   * @var string
+   */
+  protected $targetEntityType;
+
+  /**
+   * Bundle to be displayed.
+   *
+   * @var string
+   */
+  protected $bundle;
+
+  /**
+   * A list of field definitions eligible for configuration in this display.
+   *
+   * @var \Drupal\Core\Field\FieldDefinitionInterface[]
+   */
+  protected $fieldDefinitions;
+
+  /**
+   * View or form mode to be displayed.
+   *
+   * @var string
+   */
+  protected $mode = self::CUSTOM_MODE;
+
+  /**
+   * Whether this display is enabled or not. If the entity (form) display
+   * is disabled, we'll fall back to the 'default' display.
+   *
+   * @var bool
+   */
+  protected $status;
+
+  /**
+   * List of component display options, keyed by component name.
+   *
+   * @var array
+   */
+  protected $content = [];
+
+  /**
+   * List of components that are set to be hidden.
+   *
+   * @var array
+   */
+  protected $hidden = [];
+
+  /**
+   * The original view or form mode that was requested (case of view/form modes
+   * being configured to fall back to the 'default' display).
+   *
+   * @var string
+   */
+  protected $originalMode;
+
+  /**
+   * The plugin objects used for this display, keyed by field name.
+   *
+   * @var array
+   */
+  protected $plugins = [];
+
+  /**
+   * Context in which this entity will be used (e.g. 'view', 'form').
+   *
+   * @var string
+   */
+  protected $displayContext;
+
+  /**
+   * The plugin manager used by this entity type.
+   *
+   * @var \Drupal\Component\Plugin\PluginManagerBase
+   */
+  protected $pluginManager;
+
+  /**
+   * The renderer.
+   *
+   * @var \Drupal\Core\Render\RendererInterface
+   */
+  protected $renderer;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(array $values, $entity_type) {
+    if (!isset($values['targetEntityType']) || !isset($values['bundle'])) {
+      throw new \InvalidArgumentException('Missing required properties for an EntityDisplay entity.');
+    }
+
+    if (!$this->entityTypeManager()->getDefinition($values['targetEntityType'])->entityClassImplements(FieldableEntityInterface::class)) {
+      throw new \InvalidArgumentException('EntityDisplay entities can only handle fieldable entity types.');
+    }
+
+    $this->renderer = \Drupal::service('renderer');
+
+    // A plugin manager and a context type needs to be set by extending classes.
+    if (!isset($this->pluginManager)) {
+      throw new \RuntimeException('Missing plugin manager.');
+    }
+    if (!isset($this->displayContext)) {
+      throw new \RuntimeException('Missing display context type.');
+    }
+
+    parent::__construct($values, $entity_type);
+
+    $this->originalMode = $this->mode;
+
+    $this->init();
+  }
+
+  /**
+   * Initializes the display.
+   *
+   * This fills in default options for components:
+   * - that are not explicitly known as either "visible" or "hidden" in the
+   *   display,
+   * - or that are not supposed to be configurable.
+   */
+  protected function init() {
+    // Only populate defaults for "official" view modes and form modes.
+    if ($this->mode !== static::CUSTOM_MODE) {
+      $default_region = $this->getDefaultRegion();
+      // Fill in defaults for extra fields.
+      $context = $this->displayContext == 'view' ? 'display' : $this->displayContext;
+      $extra_fields = \Drupal::entityManager()->getExtraFields($this->targetEntityType, $this->bundle);
+      $extra_fields = isset($extra_fields[$context]) ? $extra_fields[$context] : [];
+      foreach ($extra_fields as $name => $definition) {
+        if (!isset($this->content[$name]) && !isset($this->hidden[$name])) {
+          // Extra fields are visible by default unless they explicitly say so.
+          if (!isset($definition['visible']) || $definition['visible'] == TRUE) {
+            $this->content[$name] = [
+              'weight' => $definition['weight']
+            ];
+          }
+          else {
+            $this->hidden[$name] = TRUE;
+          }
+        }
+        // Ensure extra fields have a 'region'.
+        if (isset($this->content[$name])) {
+          $this->content[$name] += ['region' => $default_region];
+        }
+      }
+
+      // Fill in defaults for fields.
+      $fields = $this->getFieldDefinitions();
+      foreach ($fields as $name => $definition) {
+        if (!$definition->isDisplayConfigurable($this->displayContext) || (!isset($this->content[$name]) && !isset($this->hidden[$name]))) {
+          $options = $definition->getDisplayOptions($this->displayContext);
+
+          // @todo Remove handling of 'type' in https://www.drupal.org/node/2799641.
+          if (!isset($options['region']) && !empty($options['type']) && $options['type'] === 'hidden') {
+            $options['region'] = 'hidden';
+            @trigger_error("Specifying 'type' => 'hidden' is deprecated, use 'region' => 'hidden' instead.", E_USER_DEPRECATED);
+          }
+
+          if (!empty($options['region']) && $options['region'] === 'hidden') {
+            $this->hidden[$name] = TRUE;
+          }
+          elseif ($options) {
+            $options += ['region' => $default_region];
+            $this->content[$name] = $this->pluginManager->prepareConfiguration($definition->getType(), $options);
+          }
+          // Note: (base) fields that do not specify display options are not
+          // tracked in the display at all, in order to avoid cluttering the
+          // configuration that gets saved back.
+        }
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTargetEntityTypeId() {
+    return $this->targetEntityType;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getMode() {
+    return $this->get('mode');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getOriginalMode() {
+    return $this->get('originalMode');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTargetBundle() {
+    return $this->bundle;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setTargetBundle($bundle) {
+    $this->set('bundle', $bundle);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function id() {
+    return $this->targetEntityType . '.' . $this->bundle . '.' . $this->mode;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function preSave(EntityStorageInterface $storage, $update = TRUE) {
+    // Ensure that a region is set on each component.
+    foreach ($this->getComponents() as $name => $component) {
+      $this->handleHiddenType($name, $component);
+      // Ensure that a region is set.
+      if (isset($this->content[$name]) && !isset($component['region'])) {
+        // Directly set the component to bypass other changes in setComponent().
+        $this->content[$name]['region'] = $this->getDefaultRegion();
+      }
+    }
+
+    ksort($this->content);
+    ksort($this->hidden);
+    parent::preSave($storage, $update);
+  }
+
+  /**
+   * Handles a component type of 'hidden'.
+   *
+   * @deprecated This method exists only for backwards compatibility.
+   *
+   * @todo Remove this in https://www.drupal.org/node/2799641.
+   *
+   * @param string $name
+   *   The name of the component.
+   * @param array $component
+   *   The component array.
+   */
+  protected function handleHiddenType($name, array $component) {
+    if (!isset($component['region']) && isset($component['type']) && $component['type'] === 'hidden') {
+      $this->removeComponent($name);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function calculateDependencies() {
+    parent::calculateDependencies();
+    $target_entity_type = $this->entityManager()->getDefinition($this->targetEntityType);
+
+    // Create dependency on the bundle.
+    $bundle_config_dependency = $target_entity_type->getBundleConfigDependency($this->bundle);
+    $this->addDependency($bundle_config_dependency['type'], $bundle_config_dependency['name']);
+
+    // If field.module is enabled, add dependencies on 'field_config' entities
+    // for both displayed and hidden fields. We intentionally leave out base
+    // field overrides, since the field still exists without them.
+    if (\Drupal::moduleHandler()->moduleExists('field')) {
+      $components = $this->content + $this->hidden;
+      $field_definitions = $this->entityManager()->getFieldDefinitions($this->targetEntityType, $this->bundle);
+      foreach (array_intersect_key($field_definitions, $components) as $field_name => $field_definition) {
+        if ($field_definition instanceof ConfigEntityInterface && $field_definition->getEntityTypeId() == 'field_config') {
+          $this->addDependency('config', $field_definition->getConfigDependencyName());
+        }
+      }
+    }
+
+    // Depend on configured modes.
+    if ($this->mode != 'default') {
+      $mode_entity = $this->entityManager()->getStorage('entity_' . $this->displayContext . '_mode')->load($target_entity_type->id() . '.' . $this->mode);
+      $this->addDependency('config', $mode_entity->getConfigDependencyName());
+    }
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function toArray() {
+    $properties = parent::toArray();
+    // Do not store options for fields whose display is not set to be
+    // configurable.
+    foreach ($this->getFieldDefinitions() as $field_name => $definition) {
+      if (!$definition->isDisplayConfigurable($this->displayContext)) {
+        unset($properties['content'][$field_name]);
+        unset($properties['hidden'][$field_name]);
+      }
+    }
+
+    return $properties;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createCopy($mode) {
+    $display = $this->createDuplicate();
+    $display->mode = $display->originalMode = $mode;
+    return $display;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getComponents() {
+    return $this->content;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getComponent($name) {
+    return isset($this->content[$name]) ? $this->content[$name] : NULL;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setComponent($name, array $options = []) {
+    // If no weight specified, make sure the field sinks at the bottom.
+    if (!isset($options['weight'])) {
+      $max = $this->getHighestWeight();
+      $options['weight'] = isset($max) ? $max + 1 : 0;
+    }
+
+    // For a field, fill in default options.
+    if ($field_definition = $this->getFieldDefinition($name)) {
+      $options = $this->pluginManager->prepareConfiguration($field_definition->getType(), $options);
+    }
+
+    // Ensure we always have an empty settings and array.
+    $options += ['settings' => [], 'third_party_settings' => []];
+
+    $this->content[$name] = $options;
+    unset($this->hidden[$name]);
+    unset($this->plugins[$name]);
+
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function removeComponent($name) {
+    $this->hidden[$name] = TRUE;
+    unset($this->content[$name]);
+    unset($this->plugins[$name]);
+
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getHighestWeight() {
+    $weights = [];
+
+    // Collect weights for the components in the display.
+    foreach ($this->content as $options) {
+      if (isset($options['weight'])) {
+        $weights[] = $options['weight'];
+      }
+    }
+
+    // Let other modules feedback about their own additions.
+    $weights = array_merge($weights, \Drupal::moduleHandler()->invokeAll('field_info_max_weight', [$this->targetEntityType, $this->bundle, $this->displayContext, $this->mode]));
+
+    return $weights ? max($weights) : NULL;
+  }
+
+  /**
+   * Gets the field definition of a field.
+   */
+  protected function getFieldDefinition($field_name) {
+    $definitions = $this->getFieldDefinitions();
+    return isset($definitions[$field_name]) ? $definitions[$field_name] : NULL;
+  }
+
+  /**
+   * Gets the definitions of the fields that are candidate for display.
+   */
+  protected function getFieldDefinitions() {
+    if (!isset($this->fieldDefinitions)) {
+      $definitions = \Drupal::entityManager()->getFieldDefinitions($this->targetEntityType, $this->bundle);
+      // For "official" view modes and form modes, ignore fields whose
+      // definition states they should not be displayed.
+      if ($this->mode !== static::CUSTOM_MODE) {
+        $definitions = array_filter($definitions, [$this, 'fieldHasDisplayOptions']);
+      }
+      $this->fieldDefinitions = $definitions;
+    }
+
+    return $this->fieldDefinitions;
+  }
+
+  /**
+   * Determines if a field has options for a given display.
+   *
+   * @param FieldDefinitionInterface $definition
+   *   A field definition.
+   * @return array|null
+   */
+  private function fieldHasDisplayOptions(FieldDefinitionInterface $definition) {
+    // The display only cares about fields that specify display options.
+    // Discard base fields that are not rendered through formatters / widgets.
+    return $definition->getDisplayOptions($this->displayContext);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function onDependencyRemoval(array $dependencies) {
+    $changed = parent::onDependencyRemoval($dependencies);
+    foreach ($dependencies['config'] as $entity) {
+      if ($entity->getEntityTypeId() == 'field_config') {
+        // Remove components for fields that are being deleted.
+        $this->removeComponent($entity->getName());
+        unset($this->hidden[$entity->getName()]);
+        $changed = TRUE;
+      }
+    }
+    foreach ($this->getComponents() as $name => $component) {
+      if ($renderer = $this->getRenderer($name)) {
+        if (in_array($renderer->getPluginDefinition()['provider'], $dependencies['module'])) {
+          // Revert to the defaults if the plugin that supplies the widget or
+          // formatter depends on a module that is being uninstalled.
+          $this->setComponent($name);
+          $changed = TRUE;
+        }
+
+        // Give this component the opportunity to react on dependency removal.
+        $component_removed_dependencies = $this->getPluginRemovedDependencies($renderer->calculateDependencies(), $dependencies);
+        if ($component_removed_dependencies) {
+          if ($renderer->onDependencyRemoval($component_removed_dependencies)) {
+            // Update component settings to reflect changes.
+            $component['settings'] = $renderer->getSettings();
+            $component['third_party_settings'] = [];
+            foreach ($renderer->getThirdPartyProviders() as $module) {
+              $component['third_party_settings'][$module] = $renderer->getThirdPartySettings($module);
+            }
+            $this->setComponent($name, $component);
+            $changed = TRUE;
+          }
+          // If there are unresolved deleted dependencies left, disable this
+          // component to avoid the removal of the entire display entity.
+          if ($this->getPluginRemovedDependencies($renderer->calculateDependencies(), $dependencies)) {
+            $this->removeComponent($name);
+            $arguments = [
+              '@display' => (string) $this->getEntityType()->getLabel(),
+              '@id' => $this->id(),
+              '@name' => $name,
+            ];
+            $this->getLogger()->warning("@display '@id': Component '@name' was disabled because its settings depend on removed dependencies.", $arguments);
+            $changed = TRUE;
+          }
+        }
+      }
+    }
+    return $changed;
+  }
+
+  /**
+   * Returns the plugin dependencies being removed.
+   *
+   * The function recursively computes the intersection between all plugin
+   * dependencies and all removed dependencies.
+   *
+   * Note: The two arguments do not have the same structure.
+   *
+   * @param array[] $plugin_dependencies
+   *   A list of dependencies having the same structure as the return value of
+   *   ConfigEntityInterface::calculateDependencies().
+   * @param array[] $removed_dependencies
+   *   A list of dependencies having the same structure as the input argument of
+   *   ConfigEntityInterface::onDependencyRemoval().
+   *
+   * @return array
+   *   A recursively computed intersection.
+   *
+   * @see \Drupal\Core\Config\Entity\ConfigEntityInterface::calculateDependencies()
+   * @see \Drupal\Core\Config\Entity\ConfigEntityInterface::onDependencyRemoval()
+   */
+  protected function getPluginRemovedDependencies(array $plugin_dependencies, array $removed_dependencies) {
+    $intersect = [];
+    foreach ($plugin_dependencies as $type => $dependencies) {
+      if ($removed_dependencies[$type]) {
+        // Config and content entities have the dependency names as keys while
+        // module and theme dependencies are indexed arrays of dependency names.
+        // @see \Drupal\Core\Config\ConfigManager::callOnDependencyRemoval()
+        if (in_array($type, ['config', 'content'])) {
+          $removed = array_intersect_key($removed_dependencies[$type], array_flip($dependencies));
+        }
+        else {
+          $removed = array_values(array_intersect($removed_dependencies[$type], $dependencies));
+        }
+        if ($removed) {
+          $intersect[$type] = $removed;
+        }
+      }
+    }
+    return $intersect;
+  }
+
+  /**
+   * Gets the default region.
+   *
+   * @return string
+   *   The default region for this display.
+   */
+  protected function getDefaultRegion() {
+    return 'content';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __sleep() {
+    // Only store the definition, not external objects or derived data.
+    $keys = array_keys($this->toArray());
+    // In addition, we need to keep the entity type and the "is new" status.
+    $keys[] = 'entityTypeId';
+    $keys[] = 'enforceIsNew';
+    // Keep track of the serialized keys, to avoid calling toArray() again in
+    // __wakeup(). Because of the way __sleep() works, the data has to be
+    // present in the object to be included in the serialized values.
+    $keys[] = '_serializedKeys';
+    $this->_serializedKeys = $keys;
+    return $keys;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __wakeup() {
+    // Determine what were the properties from toArray() that were saved in
+    // __sleep().
+    $keys = $this->_serializedKeys;
+    unset($this->_serializedKeys);
+    $values = array_intersect_key(get_object_vars($this), array_flip($keys));
+    // Run those values through the __construct(), as if they came from a
+    // regular entity load.
+    $this->__construct($values, $this->entityTypeId);
+  }
+
+  /**
+   * Provides the 'system' channel logger service.
+   *
+   * @return \Psr\Log\LoggerInterface
+   *   The 'system' channel logger.
+   */
+  protected function getLogger() {
+    return \Drupal::logger('system');
+  }
+
+}