abstract class ListItemBase in Drupal 8
Same name and namespace in other branches
- 9 core/modules/options/src/Plugin/Field/FieldType/ListItemBase.php \Drupal\options\Plugin\Field\FieldType\ListItemBase
Plugin base class inherited by the options field types.
Hierarchy
- class \Drupal\Core\TypedData\TypedData implements PluginInspectionInterface, TypedDataInterface uses DependencySerializationTrait, StringTranslationTrait, TypedDataTrait
- class \Drupal\Core\TypedData\Plugin\DataType\Map implements \Drupal\Core\TypedData\Plugin\DataType\IteratorAggregate, ComplexDataInterface
- class \Drupal\Core\Field\FieldItemBase implements FieldItemInterface
- class \Drupal\options\Plugin\Field\FieldType\ListItemBase implements OptionsProviderInterface uses AllowedTagsXssTrait
- class \Drupal\Core\Field\FieldItemBase implements FieldItemInterface
- class \Drupal\Core\TypedData\Plugin\DataType\Map implements \Drupal\Core\TypedData\Plugin\DataType\IteratorAggregate, ComplexDataInterface
Expanded class hierarchy of ListItemBase
File
- core/
modules/ options/ src/ Plugin/ Field/ FieldType/ ListItemBase.php, line 16
Namespace
Drupal\options\Plugin\Field\FieldTypeView source
abstract class ListItemBase extends FieldItemBase implements OptionsProviderInterface {
use AllowedTagsXssTrait;
/**
* {@inheritdoc}
*/
public static function defaultStorageSettings() {
return [
'allowed_values' => [],
'allowed_values_function' => '',
] + parent::defaultStorageSettings();
}
/**
* {@inheritdoc}
*/
public function getPossibleValues(AccountInterface $account = NULL) {
// Flatten options firstly, because Possible Options may contain group
// arrays.
$flatten_options = OptGroup::flattenOptions($this
->getPossibleOptions($account));
return array_keys($flatten_options);
}
/**
* {@inheritdoc}
*/
public function getPossibleOptions(AccountInterface $account = NULL) {
return $this
->getSettableOptions($account);
}
/**
* {@inheritdoc}
*/
public function getSettableValues(AccountInterface $account = NULL) {
// Flatten options firstly, because Settable Options may contain group
// arrays.
$flatten_options = OptGroup::flattenOptions($this
->getSettableOptions($account));
return array_keys($flatten_options);
}
/**
* {@inheritdoc}
*/
public function getSettableOptions(AccountInterface $account = NULL) {
$allowed_options = options_allowed_values($this
->getFieldDefinition()
->getFieldStorageDefinition(), $this
->getEntity());
return $allowed_options;
}
/**
* {@inheritdoc}
*/
public static function generateSampleValue(FieldDefinitionInterface $field_definition) {
$allowed_options = options_allowed_values($field_definition
->getFieldStorageDefinition());
$values['value'] = array_rand($allowed_options);
return $values;
}
/**
* {@inheritdoc}
*/
public function isEmpty() {
return empty($this->value) && (string) $this->value !== '0';
}
/**
* {@inheritdoc}
*/
public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data) {
$allowed_values = $this
->getSetting('allowed_values');
$allowed_values_function = $this
->getSetting('allowed_values_function');
$element['allowed_values'] = [
'#type' => 'textarea',
'#title' => t('Allowed values list'),
'#default_value' => $this
->allowedValuesString($allowed_values),
'#rows' => 10,
'#access' => empty($allowed_values_function),
'#element_validate' => [
[
get_class($this),
'validateAllowedValues',
],
],
'#field_has_data' => $has_data,
'#field_name' => $this
->getFieldDefinition()
->getName(),
'#entity_type' => $this
->getEntity()
->getEntityTypeId(),
'#allowed_values' => $allowed_values,
];
$element['allowed_values']['#description'] = $this
->allowedValuesDescription();
$element['allowed_values_function'] = [
'#type' => 'item',
'#title' => t('Allowed values list'),
'#markup' => t('The value of this field is being determined by the %function function and may not be changed.', [
'%function' => $allowed_values_function,
]),
'#access' => !empty($allowed_values_function),
'#value' => $allowed_values_function,
];
return $element;
}
/**
* Provides the field type specific allowed values form element #description.
*
* @return string
* The field type allowed values form specific description.
*/
protected abstract function allowedValuesDescription();
/**
* #element_validate callback for options field allowed values.
*
* @param $element
* An associative array containing the properties and children of the
* generic form element.
* @param $form_state
* The current state of the form for the form this element belongs to.
*
* @see \Drupal\Core\Render\Element\FormElement::processPattern()
*/
public static function validateAllowedValues($element, FormStateInterface $form_state) {
$values = static::extractAllowedValues($element['#value'], $element['#field_has_data']);
if (!is_array($values)) {
$form_state
->setError($element, t('Allowed values list: invalid input.'));
}
else {
// Check that keys are valid for the field type.
foreach ($values as $key => $value) {
if ($error = static::validateAllowedValue($key)) {
$form_state
->setError($element, $error);
break;
}
}
// Prevent removing values currently in use.
if ($element['#field_has_data']) {
$lost_keys = array_keys(array_diff_key($element['#allowed_values'], $values));
if (_options_values_in_use($element['#entity_type'], $element['#field_name'], $lost_keys)) {
$form_state
->setError($element, t('Allowed values list: some values are being removed while currently in use.'));
}
}
$form_state
->setValueForElement($element, $values);
}
}
/**
* Extracts the allowed values array from the allowed_values element.
*
* @param string $string
* The raw string to extract values from.
* @param bool $has_data
* The current field already has data inserted or not.
*
* @return array|null
* The array of extracted key/value pairs, or NULL if the string is invalid.
*
* @see \Drupal\options\Plugin\Field\FieldType\ListItemBase::allowedValuesString()
*/
protected static function extractAllowedValues($string, $has_data) {
$values = [];
$list = explode("\n", $string);
$list = array_map('trim', $list);
$list = array_filter($list, 'strlen');
$generated_keys = $explicit_keys = FALSE;
foreach ($list as $position => $text) {
// Check for an explicit key.
$matches = [];
if (preg_match('/(.*)\\|(.*)/', $text, $matches)) {
// Trim key and value to avoid unwanted spaces issues.
$key = trim($matches[1]);
$value = trim($matches[2]);
$explicit_keys = TRUE;
}
elseif (!static::validateAllowedValue($text)) {
$key = $value = $text;
$explicit_keys = TRUE;
}
elseif (!$has_data) {
$key = (string) $position;
$value = $text;
$generated_keys = TRUE;
}
else {
return;
}
$values[$key] = $value;
}
// We generate keys only if the list contains no explicit key at all.
if ($explicit_keys && $generated_keys) {
return;
}
return $values;
}
/**
* Checks whether a candidate allowed value is valid.
*
* @param string $option
* The option value entered by the user.
*
* @return string
* The error message if the specified value is invalid, NULL otherwise.
*/
protected static function validateAllowedValue($option) {
}
/**
* Generates a string representation of an array of 'allowed values'.
*
* This string format is suitable for edition in a textarea.
*
* @param array $values
* An array of values, where array keys are values and array values are
* labels.
*
* @return string
* The string representation of the $values array:
* - Values are separated by a carriage return.
* - Each value is in the format "value|label" or "value".
*/
protected function allowedValuesString($values) {
$lines = [];
foreach ($values as $key => $value) {
$lines[] = "{$key}|{$value}";
}
return implode("\n", $lines);
}
/**
* {@inheritdoc}
*/
public static function storageSettingsToConfigData(array $settings) {
if (isset($settings['allowed_values'])) {
$settings['allowed_values'] = static::structureAllowedValues($settings['allowed_values']);
}
return $settings;
}
/**
* {@inheritdoc}
*/
public static function storageSettingsFromConfigData(array $settings) {
if (isset($settings['allowed_values'])) {
$settings['allowed_values'] = static::simplifyAllowedValues($settings['allowed_values']);
}
return $settings;
}
/**
* Simplifies allowed values to a key-value array from the structured array.
*
* @param array $structured_values
* Array of items with a 'value' and 'label' key each for the allowed
* values.
*
* @return array
* Allowed values were the array key is the 'value' value, the value is
* the 'label' value.
*
* @see \Drupal\options\Plugin\Field\FieldType\ListItemBase::structureAllowedValues()
*/
protected static function simplifyAllowedValues(array $structured_values) {
$values = [];
foreach ($structured_values as $item) {
if (is_array($item['label'])) {
// Nested elements are embedded in the label.
$item['label'] = static::simplifyAllowedValues($item['label']);
}
$values[$item['value']] = $item['label'];
}
return $values;
}
/**
* Creates a structured array of allowed values from a key-value array.
*
* @param array $values
* Allowed values were the array key is the 'value' value, the value is
* the 'label' value.
*
* @return array
* Array of items with a 'value' and 'label' key each for the allowed
* values.
*
* @see \Drupal\options\Plugin\Field\FieldType\ListItemBase::simplifyAllowedValues()
*/
protected static function structureAllowedValues(array $values) {
$structured_values = [];
foreach ($values as $value => $label) {
if (is_array($label)) {
$label = static::structureAllowedValues($label);
}
$structured_values[] = [
'value' => static::castAllowedValue($value),
'label' => $label,
];
}
return $structured_values;
}
/**
* Converts a value to the correct type.
*
* @param mixed $value
* The value to cast.
*
* @return mixed
* The casted value.
*/
protected static function castAllowedValue($value) {
return $value;
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
AllowedTagsXssTrait:: |
public | function | Returns a list of tags allowed by AllowedTagsXssTrait::fieldFilterXss(). | |
AllowedTagsXssTrait:: |
public | function | Returns a human-readable list of allowed tags for display in help texts. | |
AllowedTagsXssTrait:: |
public | function | Filters an HTML string to prevent XSS vulnerabilities. | |
DependencySerializationTrait:: |
protected | property | An array of entity type IDs keyed by the property name of their storages. | |
DependencySerializationTrait:: |
protected | property | An array of service IDs keyed by property name used for serialization. | |
DependencySerializationTrait:: |
public | function | 1 | |
DependencySerializationTrait:: |
public | function | 2 | |
FieldItemBase:: |
public static | function |
Calculates dependencies for field items. Overrides FieldItemInterface:: |
2 |
FieldItemBase:: |
public static | function |
Calculates dependencies for field items on the storage level. Overrides FieldItemInterface:: |
1 |
FieldItemBase:: |
public static | function |
Defines the field-level settings for this plugin. Overrides FieldItemInterface:: |
7 |
FieldItemBase:: |
public | function |
Defines custom delete behavior for field values. Overrides FieldItemInterface:: |
2 |
FieldItemBase:: |
public | function |
Defines custom revision delete behavior for field values. Overrides FieldItemInterface:: |
|
FieldItemBase:: |
public | function |
Returns a form for the field-level settings. Overrides FieldItemInterface:: |
7 |
FieldItemBase:: |
public static | function |
Returns a settings array in the field type's canonical representation. Overrides FieldItemInterface:: |
1 |
FieldItemBase:: |
public static | function |
Returns a settings array that can be stored as a configuration value. Overrides FieldItemInterface:: |
1 |
FieldItemBase:: |
public | function |
Gets the entity that field belongs to. Overrides FieldItemInterface:: |
|
FieldItemBase:: |
public | function |
Gets the field definition. Overrides FieldItemInterface:: |
|
FieldItemBase:: |
public | function |
Gets the langcode of the field values held in the object. Overrides FieldItemInterface:: |
|
FieldItemBase:: |
protected | function | Returns the value of a field setting. | |
FieldItemBase:: |
protected | function | Returns the array of field settings. | |
FieldItemBase:: |
public static | function |
Returns the name of the main property, if any. Overrides FieldItemInterface:: |
8 |
FieldItemBase:: |
public static | function |
Informs the plugin that a dependency of the field will be deleted. Overrides FieldItemInterface:: |
1 |
FieldItemBase:: |
public | function |
Defines custom post-save behavior for field values. Overrides FieldItemInterface:: |
2 |
FieldItemBase:: |
public | function |
Defines custom presave behavior for field values. Overrides FieldItemInterface:: |
7 |
FieldItemBase:: |
public | function |
Sets the data value. Overrides Map:: |
4 |
FieldItemBase:: |
public | function |
Returns a renderable array for a single field item. Overrides FieldItemInterface:: |
|
FieldItemBase:: |
protected | function |
Different to the parent Map class, we avoid creating property objects as
far as possible in order to optimize performance. Thus we just update
$this->values if no property object has been created yet. Overrides Map:: |
|
FieldItemBase:: |
public | function |
Constructs a TypedData object given its definition and context. Overrides TypedData:: |
1 |
FieldItemBase:: |
public | function |
Magic method: Gets a property value. Overrides FieldItemInterface:: |
2 |
FieldItemBase:: |
public | function |
Magic method: Determines whether a property is set. Overrides FieldItemInterface:: |
|
FieldItemBase:: |
public | function |
Magic method: Sets a property value. Overrides FieldItemInterface:: |
1 |
FieldItemBase:: |
public | function |
Magic method: Unsets a property. Overrides FieldItemInterface:: |
|
FieldItemInterface:: |
public static | function | Defines field item properties. | 28 |
FieldItemInterface:: |
public static | function | Returns the schema for the field. | 31 |
ListItemBase:: |
abstract protected | function | Provides the field type specific allowed values form element #description. | 3 |
ListItemBase:: |
protected | function | Generates a string representation of an array of 'allowed values'. | |
ListItemBase:: |
protected static | function | Converts a value to the correct type. | 3 |
ListItemBase:: |
public static | function |
Defines the storage-level settings for this plugin. Overrides FieldItemBase:: |
|
ListItemBase:: |
protected static | function | Extracts the allowed values array from the allowed_values element. | 1 |
ListItemBase:: |
public static | function |
Generates placeholder field values. Overrides FieldItemBase:: |
|
ListItemBase:: |
public | function |
Returns an array of possible values with labels for display. Overrides OptionsProviderInterface:: |
|
ListItemBase:: |
public | function |
Returns an array of possible values. Overrides OptionsProviderInterface:: |
|
ListItemBase:: |
public | function |
Returns an array of settable values with labels for display. Overrides OptionsProviderInterface:: |
|
ListItemBase:: |
public | function |
Returns an array of settable values. Overrides OptionsProviderInterface:: |
|
ListItemBase:: |
public | function |
Determines whether the data structure is empty. Overrides Map:: |
|
ListItemBase:: |
protected static | function | Simplifies allowed values to a key-value array from the structured array. | 1 |
ListItemBase:: |
public | function |
Returns a form for the storage-level settings. Overrides FieldItemBase:: |
|
ListItemBase:: |
public static | function |
Returns a settings array in the field type's canonical representation. Overrides FieldItemBase:: |
|
ListItemBase:: |
public static | function |
Returns a settings array that can be stored as a configuration value. Overrides FieldItemBase:: |
|
ListItemBase:: |
protected static | function | Creates a structured array of allowed values from a key-value array. | |
ListItemBase:: |
protected static | function | Checks whether a candidate allowed value is valid. | 3 |
ListItemBase:: |
public static | function | #element_validate callback for options field allowed values. | |
Map:: |
protected | property |
The data definition. Overrides TypedData:: |
|
Map:: |
protected | property | The array of properties. | |
Map:: |
protected | property | An array of values for the contained properties. | |
Map:: |
public | function |
Applies the default value. Overrides TypedData:: |
4 |
Map:: |
public | function |
Gets a property object. Overrides ComplexDataInterface:: |
|
Map:: |
public | function | ||
Map:: |
public | function |
Gets an array of property objects. Overrides ComplexDataInterface:: |
|
Map:: |
public | function |
Returns a string representation of the data. Overrides TypedData:: |
|
Map:: |
public | function |
Gets the data value. Overrides TypedData:: |
1 |
Map:: |
public | function |
Overrides TraversableTypedDataInterface:: |
4 |
Map:: |
public | function |
Sets a property value. Overrides ComplexDataInterface:: |
|
Map:: |
public | function |
Returns an array of all property values. Overrides ComplexDataInterface:: |
1 |
Map:: |
public | function | Magic method: Implements a deep clone. | |
StringTranslationTrait:: |
protected | property | The string translation service. | 1 |
StringTranslationTrait:: |
protected | function | Formats a string containing a count of items. | |
StringTranslationTrait:: |
protected | function | Returns the number of plurals supported by a given language. | |
StringTranslationTrait:: |
protected | function | Gets the string translation service. | |
StringTranslationTrait:: |
public | function | Sets the string translation service to use. | 2 |
StringTranslationTrait:: |
protected | function | Translates a string to the current language or to a given language. | |
TypedData:: |
protected | property | The property name. | |
TypedData:: |
protected | property | The parent typed data object. | |
TypedData:: |
public static | function |
Constructs a TypedData object given its definition and context. Overrides TypedDataInterface:: |
|
TypedData:: |
public | function |
Gets a list of validation constraints. Overrides TypedDataInterface:: |
9 |
TypedData:: |
public | function |
Gets the data definition. Overrides TypedDataInterface:: |
|
TypedData:: |
public | function |
Returns the name of a property or item. Overrides TypedDataInterface:: |
|
TypedData:: |
public | function |
Returns the parent data structure; i.e. either complex data or a list. Overrides TypedDataInterface:: |
|
TypedData:: |
public | function |
Gets the definition of the plugin implementation. Overrides PluginInspectionInterface:: |
|
TypedData:: |
public | function |
Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface:: |
|
TypedData:: |
public | function |
Returns the property path of the data. Overrides TypedDataInterface:: |
|
TypedData:: |
public | function |
Returns the root of the typed data tree. Overrides TypedDataInterface:: |
|
TypedData:: |
public | function |
Sets the context of a property or item via a context aware parent. Overrides TypedDataInterface:: |
|
TypedData:: |
public | function |
Validates the currently set data value. Overrides TypedDataInterface:: |
|
TypedDataTrait:: |
protected | property | The typed data manager used for creating the data types. | |
TypedDataTrait:: |
public | function | Gets the typed data manager. | 2 |
TypedDataTrait:: |
public | function | Sets the typed data manager. | 2 |