DateRecurDefaultFormatter.php in Recurring Dates Field 8

Namespace

Drupal\date_recur\Plugin\Field\FieldFormatter

File

src/Plugin/Field/FieldFormatter/DateRecurDefaultFormatter.php

<?php

namespace Drupal\date_recur\Plugin\Field\FieldFormatter;

use Drupal\Core\Datetime\DrupalDateTime;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\date_recur\Plugin\Field\FieldType\DateRecurItem;
use Drupal\datetime_range\Plugin\Field\FieldFormatter\DateRangeDefaultFormatter;

/**
 * Plugin implementation of the 'date_recur_default_formatter' formatter.
 *
 * @FieldFormatter(
 *   id = "date_recur_default_formatter",
 *   label = @Translation("Date recur default formatter"),
 *   field_types = {
 *     "date_recur"
 *   }
 * )
 */
class DateRecurDefaultFormatter extends DateRangeDefaultFormatter {

  /** @var int */
  protected $occurrenceCounter;

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return [
      // Implement default settings.
      'show_rrule' => TRUE,
      'show_next' => 5,
      'occurrence_format_type' => 'medium',
      'same_end_date_format_type' => 'medium',
      'count_per_item' => TRUE,
    ] + parent::defaultSettings();
  }
  protected function showNextOptions() {

    // This cannot work for infinite fields.
    // $next_options[-1] = $this->t('All');
    $next_options[0] = $this
      ->t('None');
    for ($i = 1; $i <= 20; $i++) {
      $next_options[$i] = $i;
    }
    return $next_options;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $form = parent::settingsForm($form, $form_state);
    $form['show_rrule'] = [
      '#type' => 'checkbox',
      '#title' => $this
        ->t('Show repeat rule'),
      '#default_value' => $this
        ->getSetting('show_rrule'),
    ];
    $form['show_next'] = [
      '#type' => 'select',
      '#options' => $this
        ->showNextOptions(),
      '#title' => $this
        ->t('Show next occurrences'),
      '#default_value' => $this
        ->getSetting('show_next'),
    ];
    $form['count_per_item'] = [
      '#type' => 'checkbox',
      '#title' => $this
        ->t('Limit occurrences per field item'),
      '#default_value' => $this
        ->getSetting('count_per_item'),
      '#description' => $this
        ->t('If disabled, the number of occurrences shown is limited across all field items.'),
    ];
    $form['occurrence_format_type'] = $form['format_type'];
    $form['occurrence_format_type']['#title'] .= ' ' . t('(Occurrences)');
    $form['occurrence_format_type']['#default_value'] = $this
      ->getSetting('occurrence_format_type');
    $form['same_end_date_format_type'] = $form['format_type'];
    $form['same_end_date_format_type']['#title'] .= ' ' . t('(End date if same day as start date)');
    $form['same_end_date_format_type']['#default_value'] = $this
      ->getSetting('same_end_date_format_type');
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = parent::settingsSummary();
    $summary[] = $this
      ->t('Show repeat rule') . ': ' . ($this
      ->getSetting('show_rrule') ? $this
      ->t('Yes') : $this
      ->t('No'));
    $summary[] = $this
      ->t('Show next occurrences') . ': ' . $this
      ->showNextOptions()[$this
      ->getSetting('show_next')];
    $date = new DrupalDateTime();
    $date->_dateRecurIsOccurrence = TRUE;
    $summary[] = t('Occurrence format: @display', [
      '@display' => $this
        ->formatDate($date),
    ]);
    return $summary;
  }
  protected function buildDateRangeValue($start_date, $end_date, $isOccurrence = FALSE) {

    // Protection. @todo: Find out why sometimes a \DateTime arrives.
    if ($start_date instanceof \DateTime) {
      $start_date = DrupalDateTime::createFromDateTime($start_date);
    }
    if ($end_date instanceof \DateTime) {
      $end_date = DrupalDateTime::createFromDateTime($end_date);
    }
    if ($isOccurrence) {
      $start_date->_dateRecurIsOccurrence = $end_date->_dateRecurIsOccurrence = TRUE;
    }
    if ($start_date
      ->format('Ymd') == $end_date
      ->format('Ymd')) {
      $end_date->_same_end_date = TRUE;
    }
    if ($start_date
      ->format('U') !== $end_date
      ->format('U')) {
      $element = [
        'start_date' => $this
          ->buildDateWithIsoAttribute($start_date),
        'separator' => [
          '#plain_text' => ' ' . $this
            ->getSetting('separator') . ' ',
        ],
        'end_date' => $this
          ->buildDateWithIsoAttribute($end_date),
      ];
    }
    else {
      $element = $this
        ->buildDateWithIsoAttribute($start_date);
    }
    return $element;
  }
  protected function formatDate($date) {
    if (!empty($date->_same_end_date)) {
      $format_type = $this
        ->getSetting('same_end_date_format_type');
    }
    else {
      if (empty($date->_dateRecurIsOccurrence)) {
        $format_type = $this
          ->getSetting('format_type');
      }
      else {
        $format_type = $this
          ->getSetting('occurrence_format_type');
      }
    }
    $timezone = $this
      ->getSetting('timezone_override') ?: $date
      ->getTimezone()
      ->getName();
    return $this->dateFormatter
      ->format($date
      ->getTimestamp(), $format_type, '', $timezone != '' ? $timezone : NULL);
  }

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = [];
    $this->occurrenceCounter = 0;
    foreach ($items as $delta => $item) {
      $elements[$delta] = $this
        ->viewValue($item);
    }
    return $elements;
  }

  /**
   * Generate the output appropriate for one field item.
   *
   * @param DateRecurItem $item
   *   One field item.
   *
   * @return string
   *   The textual output generated.
   */
  protected function viewValue(DateRecurItem $item) {
    $build = [
      '#theme' => 'date_recur_default_formatter',
    ];
    if (empty($item->end_date)) {
      $item->end_date = clone $item->start_date;
    }
    $build['#date'] = $this
      ->buildDateRangeValue($item->start_date, $item->end_date);
    if (empty($item->rrule)) {
      $build['#isRecurring'] = FALSE;
    }
    else {
      $build['#isRecurring'] = TRUE;
    }
    if ($this
      ->getSetting('show_rrule') && !empty($item->rrule)) {
      $build['#repeatrule'] = $item
        ->getOccurrenceHandler()
        ->humanReadable();
    }
    $build['#occurrences'] = $this
      ->viewOccurrences($item);
    if (!empty($item->_attributes)) {
      $build += $item->_attributes;

      // Unset field item attributes since they have been included in the
      // formatter output and should not be rendered in the field template.
      unset($item->_attributes);
    }
    return $build;
  }
  protected function viewOccurrences(DateRecurItem $item) {
    $build = [];
    $start = new \DateTime('now');
    $count = $this
      ->getSetting('show_next');
    if (!$this
      ->getSetting('count_per_item')) {
      $count = $count - $this->occurrenceCounter;
    }
    if ($count <= 0) {
      return $build;
    }
    $occurrences = $item
      ->getOccurrenceHandler()
      ->getOccurrencesForDisplay($start, NULL, $count);
    foreach ($occurrences as $occurrence) {
      if (!empty($occurrence['value'])) {
        $build[] = $this
          ->buildDateRangeValue($occurrence['value'], $occurrence['end_value'], TRUE);
      }
    }
    $this->occurrenceCounter += count($occurrences);
    return $build;
  }

}

Classes

Name	Description
DateRecurDefaultFormatter	Plugin implementation of the 'date_recur_default_formatter' formatter.