public function SmartDateRecurrenceFormatter::viewElements in Smart Date 3.0.x

Same name and namespace in other branches

1. 8.2 modules/smart_date_recur/src/Plugin/Field/FieldFormatter/SmartDateRecurrenceFormatter.php \Drupal\smart_date_recur\Plugin\Field\FieldFormatter\SmartDateRecurrenceFormatter::viewElements()
2. 3.x modules/smart_date_recur/src/Plugin/Field/FieldFormatter/SmartDateRecurrenceFormatter.php \Drupal\smart_date_recur\Plugin\Field\FieldFormatter\SmartDateRecurrenceFormatter::viewElements()
3. 3.1.x modules/smart_date_recur/src/Plugin/Field/FieldFormatter/SmartDateRecurrenceFormatter.php \Drupal\smart_date_recur\Plugin\Field\FieldFormatter\SmartDateRecurrenceFormatter::viewElements()
4. 3.2.x modules/smart_date_recur/src/Plugin/Field/FieldFormatter/SmartDateRecurrenceFormatter.php \Drupal\smart_date_recur\Plugin\Field\FieldFormatter\SmartDateRecurrenceFormatter::viewElements()
5. 3.3.x modules/smart_date_recur/src/Plugin/Field/FieldFormatter/SmartDateRecurrenceFormatter.php \Drupal\smart_date_recur\Plugin\Field\FieldFormatter\SmartDateRecurrenceFormatter::viewElements()
6. 3.4.x modules/smart_date_recur/src/Plugin/Field/FieldFormatter/SmartDateRecurrenceFormatter.php \Drupal\smart_date_recur\Plugin\Field\FieldFormatter\SmartDateRecurrenceFormatter::viewElements()

Overrides SmartDateTrait::viewElements

File

modules/smart_date_recur/src/Plugin/Field/FieldFormatter/SmartDateRecurrenceFormatter.php, line 103

Class

SmartDateRecurrenceFormatter

Plugin for a recurrence-optimized formatter for 'smartdate' fields.

Namespace

Drupal\smart_date_recur\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $elements = [];

  // TODO: intellident switching between retrieval methods
  // Look for a defined format and use it if specified.
  $format_label = $this
    ->getSetting('format');
  $add_classes = $this
    ->getSetting('add_classes');
  $renderer = \Drupal::service('renderer');
  if ($format_label) {
    $format = SmartDateFormat::load($format_label);
    $settings = $format
      ->getOptions();
  }
  else {
    $settings = [
      'separator' => $this
        ->getSetting('separator'),
      'join' => $this
        ->getSetting('join'),
      'time_format' => $this
        ->getSetting('time_format'),
      'time_hour_format' => $this
        ->getSetting('time_hour_format'),
      'date_format' => $this
        ->getSetting('date_format'),
      'date_first' => $this
        ->getSetting('date_first'),
      'ampm_reduce' => $this
        ->getSetting('ampm_reduce'),
      'allday_label' => $this
        ->getSetting('allday_label'),
    ];
  }
  $rrules = [];
  foreach ($items as $delta => $item) {
    $timezone = $item->timezone ? $item->timezone : NULL;
    if (empty($item->value) || empty($item->end_value)) {
      continue;
    }
    if (empty($item->rrule)) {

      // No rule so include the item directly.
      $elements[$delta] = static::formatSmartDate($item->value, $item->end_value, $settings, $timezone);
    }
    else {

      // Uses a rule, so use a placeholder instead.
      if (!isset($rrules[$item->rrule])) {
        $elements[$delta] = $item->rrule;
        $rrules[$item->rrule]['delta'] = $delta;
      }

      // Add this instance to our array of instances for the rule.
      $rrules[$item->rrule]['instances'][] = $item;
    }
  }
  foreach ($rrules as $rrid => $rrule_collected) {
    $rrule_output = [
      '#theme' => 'smart_date_recurring_formatter',
    ];
    $instances = $rrule_collected['instances'];
    if (empty($instances)) {
      continue;
    }
    $delta = $rrule_collected['delta'];

    // Retrieve the text of the rrule.
    $rrule = SmartDateRule::load($rrid);
    $rrule_output['#rule_text'] = $rrule
      ->getTextRule();

    // Find the 'next' instance after now.
    $next_index = $this
      ->findNextInstance($instances);

    // Get the specified number of past instances.
    $past_display = $this
      ->getSetting('past_display');

    // Display past instances if set and at least one instances in the past.
    if ($past_display && $next_index) {
      if ($next_index == -1) {
        $begin = count($instances) - $past_display;
      }
      else {
        $begin = $next_index - $past_display;
      }
      if ($begin < 0) {
        $begin = 0;
        $past_display = $next_index;
      }
      $past_instances = array_slice($instances, $begin, $past_display);
      $rrule_output['#past_display'] = [
        '#theme' => 'item_list',
        '#list_type' => 'ul',
      ];
      $output['#theme'] = 'container';
      foreach ($past_instances as $item) {
        $output = static::formatSmartDate($item->value, $item->end_value, $settings, $item->timezone);
        if ($add_classes) {
          $this
            ->addRangeClasses($output);
        }
        $rrule_output['#past_display']['#items'][] = $renderer
          ->render($output);
      }
    }
    $upcoming_display = $this
      ->getSetting('upcoming_display');

    // Display upcoming instances if set and at least one instance upcoming.
    if ($upcoming_display && $next_index < count($instances) && $next_index != -1) {
      $upcoming_instances = array_slice($instances, $next_index, $upcoming_display);
      $rrule_output['#upcoming_display'] = [
        '#theme' => 'item_list',
        '#list_type' => 'ul',
      ];
      foreach ($upcoming_instances as $item) {
        $output = static::formatSmartDate($item->value, $item->end_value, $settings, $item->timezone);
        if ($add_classes) {
          $this
            ->addRangeClasses($output);
        }
        $rrule_output['#upcoming_display']['#items'][] = $renderer
          ->render($output);
      }
      if ($this
        ->getSetting('show_next')) {
        $rrule_output['#next_display'] = array_shift($rrule_output['#upcoming_display']['#items']);
      }
    }
    $elements[$delta] = $rrule_output;
  }
  return $elements;
}