public function MultigraphForm::form in Monitoring 8

Gets the actual form array to be built.

Overrides EntityForm::form

See also

\Drupal\Core\Entity\EntityForm::processForm()

\Drupal\Core\Entity\EntityForm::afterBuild()

File

modules/multigraph/src/Form/MultigraphForm.php, line 21

Contains \Drupal\monitoring_multigraph\Form\MultigraphForm.

Class

MultigraphForm

Multigraph settings form controller.

Namespace

Drupal\monitoring_multigraph\Form

Code

public function form(array $form, FormStateInterface $form_state) {
  $form = parent::form($form, $form_state);
  $form['#tree'] = TRUE;

  /** @var \Drupal\monitoring_multigraph\MultigraphInterface $multigraph */
  $multigraph = $this->entity;

  // Find sensors that can be added.
  $sensor_ids = \Drupal::entityQuery('monitoring_sensor_config')
    ->condition('status', TRUE)
    ->execute();

  // Remove already added sensors.
  $sensor_ids = array_diff($sensor_ids, array_keys($multigraph
    ->getSensorsRaw()));
  ksort($sensor_ids);

  /** @var \Drupal\monitoring\Entity\SensorConfig[] $sensors */
  $sensors = $this->entityTypeManager
    ->getStorage('monitoring_sensor_config')
    ->loadMultiple($sensor_ids);
  uasort($sensors, "\\Drupal\\monitoring\\Entity\\SensorConfig::sort");
  $form['label'] = array(
    '#type' => 'textfield',
    '#title' => $this
      ->t('Label'),
    '#maxlength' => 60,
    '#default_value' => $multigraph
      ->label(),
    '#required' => TRUE,
  );
  $form['id'] = array(
    '#type' => 'machine_name',
    '#title' => $this
      ->t('ID'),
    '#maxlength' => 32,
    '#default_value' => $multigraph
      ->id(),
    '#description' => $this
      ->t("ID of the multigraph"),
    '#required' => TRUE,
    '#disabled' => !$multigraph
      ->isNew(),
    '#machine_name' => array(
      'exists' => 'Drupal\\monitoring_multigraph\\Entity\\Multigraph::load',
    ),
  );
  $form['description'] = array(
    '#type' => 'textfield',
    '#title' => $this
      ->t('Description'),
    '#maxlength' => 255,
    '#default_value' => $multigraph
      ->getDescription(),
  );

  // Fieldset for sensor list elements.
  $form['sensor_list'] = array(
    '#type' => 'fieldset',
    '#title' => $this
      ->t('Sensors'),
    '#prefix' => '<div id="selected-sensors">',
    '#suffix' => '</div>',
    '#tree' => FALSE,
  );

  // Create an array suitable for the sensor_add_select element.
  $sensors_options = array();
  foreach ($sensors as $sensor) {
    if ($sensor
      ->isNumeric()) {
      $sensors_options[$sensor
        ->id()] = $sensor
        ->getCategory() . ': ' . $sensor
        ->getLabel();
    }
  }

  // Select element for available sensors.
  $form['sensor_list']['add'] = array(
    '#type' => 'container',
    '#attributes' => array(
      'class' => array(
        'container-inline',
      ),
    ),
  );
  $form['sensor_list']['add']['sensor_add_select'] = array(
    '#type' => 'select',
    '#title' => $this
      ->t('Available sensors'),
    '#options' => $sensors_options,
    '#empty_value' => '',
  );
  $form['sensor_list']['add']['sensor_add_button'] = array(
    '#type' => 'submit',
    '#value' => $this
      ->t('Add sensor'),
    '#ajax' => array(
      'wrapper' => 'selected-sensors',
      'callback' => array(
        $this,
        'sensorsReplace',
      ),
      'method' => 'replace',
    ),
    '#submit' => array(
      '::addSensorSubmit',
    ),
  );

  // Table for included sensors.
  $form['sensor_list']['sensors'] = array(
    '#type' => 'table',
    '#tree' => TRUE,
    '#header' => array(
      'category' => $this
        ->t('Category'),
      'label' => $this
        ->t('Sensor label'),
      'message' => $this
        ->t('Sensor message'),
      'weight' => $this
        ->t('Weight'),
      'operations' => $this
        ->t('Operations'),
    ),
    '#empty' => $this
      ->t('Select and add sensors above to include them in this multigraph.'),
    '#tabledrag' => array(
      array(
        'action' => 'order',
        'relationship' => 'sibling',
        'group' => 'sensors-table-weight',
      ),
    ),
  );

  // Fill the sensors table with form elements for each sensor.
  $weight = 0;
  foreach ($multigraph
    ->getSensors() as $sensor) {
    $form['sensor_list']['sensors'][$sensor
      ->id()] = array(
      'category' => array(
        '#markup' => $sensor
          ->getCategory(),
      ),
      'label' => array(
        '#type' => 'textfield',
        '#default_value' => $sensor
          ->label(),
        '#title' => $this
          ->t('Custom sensor label'),
        '#title_display' => 'invisible',
        '#required' => TRUE,
        '#description' => $sensor
          ->getDescription(),
      ),
      'message' => array(
        '#markup' => monitoring_sensor_run($sensor
          ->id())
          ->getMessage(),
      ),
      'weight' => array(
        '#type' => 'weight',
        '#title' => $this
          ->t('Weight'),
        '#title_display' => 'invisible',
        '#default_value' => $weight++,
        '#attributes' => array(
          'class' => array(
            'sensors-table-weight',
          ),
        ),
      ),
      'operations' => array(
        '#type' => 'submit',
        '#value' => $this
          ->t('Remove'),
        '#description' => $this
          ->t('Exclude sensor from multigraph'),
        '#name' => 'remove_' . $sensor
          ->id(),
        '#ajax' => array(
          'wrapper' => 'selected-sensors',
          'callback' => array(
            $this,
            'sensorsReplace',
          ),
          'method' => 'replace',
        ),
        '#submit' => array(
          '::removeSensorSubmit',
        ),
      ),
      '#attributes' => array(
        'class' => array(
          'draggable',
        ),
      ),
    );
  }
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => $this
      ->t('Save'),
  );
  return $form;
}