public function Math::buildConfigurationForm in Tamper 8

Form constructor.

Plugin forms are embedded in other forms. In order to know where the plugin form is located in the parent form, #parents and #array_parents must be known, but these are not available during the initial build phase. In order to have these properties available when building the plugin form's elements, let this method return a form element that has a #process callback and build the rest of the form in the callback. By the time the callback is executed, the element's #parents and #array_parents properties will have been set by the form API. For more documentation on #parents and #array_parents, see \Drupal\Core\Render\Element\FormElement.

Parameters

array $form: An associative array containing the initial structure of the plugin form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form. Calling code should pass on a subform state created through \Drupal\Core\Form\SubformState::createForSubform().

Return value

array The form structure.

Overrides TamperBase::buildConfigurationForm

File

src/Plugin/Tamper/Math.php, line 40

Class

Math

Plugin implementation for performing basic math.

Namespace

Drupal\tamper\Plugin\Tamper

Code

public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
  $form[self::SETTING_OPERATION] = [
    '#type' => 'select',
    '#title' => $this
      ->t('Operation'),
    '#required' => TRUE,
    '#description' => $this
      ->t('The operation to apply to the imported value.'),
    '#default_value' => $this
      ->getSetting(self::SETTING_OPERATION),
    '#options' => $this
      ->getOptions(),
  ];
  $form[self::SETTING_FLIP] = [
    '#type' => 'checkbox',
    '#title' => $this
      ->t('Flip'),
    '#description' => $this
      ->t('Normally, the feed item will be processed like input-value / setting-value. This option switches the order so that it is setting-value / input-value.'),
    '#default_value' => $this
      ->getSetting(self::SETTING_FLIP),
    '#states' => [
      'visible' => [
        ':input[name="plugin_configuration[operation]"]' => [
          [
            'value' => 'subtraction',
          ],
          [
            'value' => 'division',
          ],
        ],
      ],
    ],
  ];
  $form[self::SETTING_VALUE] = [
    '#type' => 'number',
    '#title' => $this
      ->t('Value'),
    '#required' => TRUE,
    '#description' => $this
      ->t('A numerical value.'),
    '#default_value' => $this
      ->getSetting(self::SETTING_VALUE),
  ];
  return $form;
}