public function Easychart::build in Easychart 8.3

Builds the renderable array for this Entity Embed display plugin.

Return value

array A renderable array representing the content of the embedded entity.

Overrides EntityEmbedDisplayBase::build

File

src/Plugin/entity_embed/EntityEmbedDisplay/Easychart.php, line 30

Contains \Drupal\eayschart\Plugin\entity_embed\EntityEmbedDisplay\Easychart.

Class

Easychart

Entity Embed Display to render Easycharts.

Namespace

Drupal\easychart\Plugin\entity_embed\EntityEmbedDisplay

Code

public function build() {
  $output = [];
  $route_match = \Drupal::routeMatch();

  // We are in preview.
  if ($route_match
    ->getRouteName() == 'embed.preview') {
    $show_placeholder = TRUE;

    // Try to render preview in the editor.
    $entity = $this
      ->getEntityFromContext();
    if (!empty($entity)) {
      $values = $entity->easychart
        ->getValue();
      if (!empty($values[0]['config'])) {
        $http_client = \Drupal::httpClient();
        $options = array();
        $options['options'] = $values[0]['config'];
        $options['type'] = 'image/png';
        $options['async'] = TRUE;
        $response = $http_client
          ->post('http://export.highcharts.com', array(
          'form_params' => (object) $options,
        ));
        if ($response
          ->getStatusCode() == 200) {
          $body = $response
            ->getBody();
          $content = $body
            ->getContents();
          if (!empty($content)) {
            $show_placeholder = FALSE;
            $output = [
              '#markup' => '<img src="http://export.highcharts.com/' . $content . '">',
            ];
          }
        }
      }
    }

    // Show placeholder.
    if ($show_placeholder) {
      $output = [
        '#markup' => '<img src="' . base_path() . drupal_get_path('module', 'easychart') . '/assets/chart-placeholder.png">',
      ];
    }
  }
  else {
    $entity = $this
      ->getEntityFromContext();
    if (!empty($entity)) {
      $delta = 0;
      $entity_id = $entity
        ->id();
      $values = $entity->easychart
        ->getValue();
      if ($output = EasychartHelper::easychartPrintChart($values[0], $entity_id, $delta)) {
        $element[$delta] = array(
          '#markup' => $output['markup'],
        );
        $element['#attached']['drupalSettings']['easychart'][$output['identifier']] = array(
          'config' => $output['config'],
          'csv' => $output['csv'],
        );
      }
    }
    if (!empty($element)) {
      EasychartHelper::addRenderLibraries($element);
      $output = $element;
    }
  }
  return $output;
}