abstract class ArrayElement in Zircon Profile 8

Same name and namespace in other branches

8.0 core/lib/Drupal/Core/Config/Schema/ArrayElement.php \Drupal\Core\Config\Schema\ArrayElement

Defines a generic configuration element that contains multiple properties.

Hierarchy

class \Drupal\Core\TypedData\TypedData implements PluginInspectionInterface, TypedDataInterface uses StringTranslationTrait, TypedDataTrait
- class \Drupal\Core\Config\Schema\Element
  - class \Drupal\Core\Config\Schema\ArrayElement implements \Drupal\Core\Config\Schema\IteratorAggregate, TypedConfigInterface

Expanded class hierarchy of ArrayElement

File

core/lib/Drupal/Core/Config/Schema/ArrayElement.php, line 13: Contains \Drupal\Core\Config\Schema\ArrayElement.

Namespace

Drupal\Core\Config\Schema

View source

abstract class ArrayElement extends Element implements \IteratorAggregate, TypedConfigInterface {

  /**
   * Parsed elements.
   */
  protected $elements;

  /**
   * Gets valid configuration data keys.
   *
   * @return array
   *   Array of valid configuration data keys.
   */
  protected function getAllKeys() {
    return is_array($this->value) ? array_keys($this->value) : array();
  }

  /**
   * Builds an array of contained elements.
   *
   * @return \Drupal\Core\TypedData\TypedDataInterface[]
   *   An array of elements contained in this element.
   */
  protected function parse() {
    $elements = array();
    foreach ($this
      ->getAllKeys() as $key) {
      $value = isset($this->value[$key]) ? $this->value[$key] : NULL;
      $definition = $this
        ->getElementDefinition($key);
      $elements[$key] = $this
        ->createElement($definition, $value, $key);
    }
    return $elements;
  }

  /**
   * Gets data definition object for contained element.
   *
   * @param int|string $key
   *   Property name or index of the element.
   *
   * @return \Drupal\Core\TypedData\DataDefinitionInterface
   */
  protected abstract function getElementDefinition($key);

  /**
   * {@inheritdoc}
   */
  public function get($name) {
    $parts = explode('.', $name);
    $root_key = array_shift($parts);
    $elements = $this
      ->getElements();
    if (isset($elements[$root_key])) {
      $element = $elements[$root_key];

      // If $property_name contained a dot recurse into the keys.
      while ($element && ($key = array_shift($parts)) !== NULL) {
        if ($element instanceof TypedConfigInterface) {
          $element = $element
            ->get($key);
        }
        else {
          $element = NULL;
        }
      }
    }
    if (isset($element)) {
      return $element;
    }
    else {
      throw new \InvalidArgumentException("The configuration property {$name} doesn't exist.");
    }
  }

  /**
   * {@inheritdoc}
   */
  public function getElements() {
    if (!isset($this->elements)) {
      $this->elements = $this
        ->parse();
    }
    return $this->elements;
  }

  /**
   * {@inheritdoc}
   */
  public function isEmpty() {
    return empty($this->value);
  }

  /**
   * {@inheritdoc}
   */
  public function toArray() {
    return isset($this->value) ? $this->value : array();
  }

  /**
   * {@inheritdoc}
   */
  public function onChange($name) {

    // Notify the parent of changes.
    if (isset($this->parent)) {
      $this->parent
        ->onChange($this->name);
    }
  }

  /**
   * {@inheritdoc}
   */
  public function getIterator() {
    return new \ArrayIterator($this
      ->getElements());
  }

  /**
   * Creates a contained typed configuration object.
   *
   * @param \Drupal\Core\TypedData\DataDefinitionInterface $definition
   *   The data definition object.
   * @param mixed $value
   *   (optional) The data value. If set, it has to match one of the supported
   *   data type format as documented for the data type classes.
   * @param string $key
   *   The key of the contained element.
   *
   * @return \Drupal\Core\TypedData\TypedDataInterface
   */
  protected function createElement($definition, $value, $key) {
    return $this
      ->getTypedDataManager()
      ->create($definition, $value, $key, $this);
  }

  /**
   * Creates a new data definition object from a type definition array and
   * actual configuration data.
   *
   * @param array $definition
   *   The base type definition array, for which a data definition should be
   *   created.
   * @param $value
   *   The value of the configuration element.
   * @param string $key
   *   The key of the contained element.
   *
   * @return \Drupal\Core\TypedData\DataDefinitionInterface
   */
  protected function buildDataDefinition($definition, $value, $key) {
    return $this
      ->getTypedDataManager()
      ->buildDataDefinition($definition, $value, $key, $this);
  }

  /**
   * Determines if this element allows NULL as a value.
   *
   * @return bool
   *   TRUE if NULL is a valid value, FALSE otherwise.
   */
  public function isNullable() {
    return isset($this->definition['nullable']) && $this->definition['nullable'] == TRUE;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ArrayElement::$elements	protected	property	Parsed elements.
ArrayElement::buildDataDefinition	protected	function	Creates a new data definition object from a type definition array and actual configuration data.
ArrayElement::createElement	protected	function	Creates a contained typed configuration object.
ArrayElement::get	public	function	Gets a contained typed configuration element. Overrides TypedConfigInterface::get
ArrayElement::getAllKeys	protected	function	Gets valid configuration data keys.
ArrayElement::getElementDefinition	abstract protected	function	Gets data definition object for contained element.	2
ArrayElement::getElements	public	function	Gets an array of contained elements. Overrides TypedConfigInterface::getElements
ArrayElement::getIterator	public	function
ArrayElement::isEmpty	public	function	Determines whether the data structure is empty. Overrides TypedConfigInterface::isEmpty
ArrayElement::isNullable	public	function	Determines if this element allows NULL as a value.
ArrayElement::onChange	public	function	React to changes to a child property or item. Overrides TraversableTypedDataInterface::onChange
ArrayElement::parse	protected	function	Builds an array of contained elements.
ArrayElement::toArray	public	function	Returns an array of all property values. Overrides TypedConfigInterface::toArray
Element::$value	protected	property	The configuration value.
Element::getTypedDataManager	public	function	Gets the typed configuration manager. Overrides TypedDataTrait::getTypedDataManager
Element::setTypedDataManager	public	function	Sets the typed config manager. Overrides TypedDataTrait::setTypedDataManager
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.
TypedData::$definition	protected	property	The data definition.	1
TypedData::$name	protected	property	The property name.
TypedData::$parent	protected	property	The parent typed data object.
TypedData::applyDefaultValue	public	function	Applies the default value. Overrides TypedDataInterface::applyDefaultValue	3
TypedData::createInstance	public static	function	Constructs a TypedData object given its definition and context. Overrides TypedDataInterface::createInstance
TypedData::getConstraints	public	function	Gets a list of validation constraints. Overrides TypedDataInterface::getConstraints	8
TypedData::getDataDefinition	public	function	Gets the data definition. Overrides TypedDataInterface::getDataDefinition
TypedData::getName	public	function	Returns the name of a property or item. Overrides TypedDataInterface::getName
TypedData::getParent	public	function	Returns the parent data structure; i.e. either complex data or a list. Overrides TypedDataInterface::getParent
TypedData::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition
TypedData::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
TypedData::getPropertyPath	public	function	Returns the property path of the data. Overrides TypedDataInterface::getPropertyPath
TypedData::getRoot	public	function	Returns the root of the typed data tree. Overrides TypedDataInterface::getRoot
TypedData::getString	public	function	Returns a string representation of the data. Overrides TypedDataInterface::getString	6
TypedData::getValue	public	function	Gets the data value. Overrides TypedDataInterface::getValue	8
TypedData::setContext	public	function	Sets the context of a property or item via a context aware parent. Overrides TypedDataInterface::setContext
TypedData::setValue	public	function	Sets the data value. Overrides TypedDataInterface::setValue	8
TypedData::validate	public	function	Validates the currently set data value. Overrides TypedDataInterface::validate
TypedData::__construct	public	function	Constructs a TypedData object given its definition and context.	3
TypedDataTrait::$typedDataManager	protected	property	The typed data manager used for creating the data types.

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abstract class ArrayElement in Zircon Profile 8

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