public function ChartsBlock::build in Charts 8.3

Same name and namespace in other branches

1. 8.4 modules/charts_blocks/src/Plugin/Block/ChartsBlock.php \Drupal\charts_blocks\Plugin\Block\ChartsBlock::build()
2. 5.0.x modules/charts_blocks/src/Plugin/Block/ChartsBlock.php \Drupal\charts_blocks\Plugin\Block\ChartsBlock::build()

Builds and returns the renderable array for this block plugin.

If a block should not be rendered because it has no content, then this method must also ensure to return no content: it must then only return an empty array, or an empty array with #cache set (with cacheability metadata indicating the circumstances for it being empty).

Return value

array A renderable array representing the content of the block.

Overrides BlockPluginInterface::build

See also

\Drupal\block\BlockViewBuilder

File

modules/charts_blocks/src/Plugin/Block/ChartsBlock.php, line 478

Class

ChartsBlock

Provides a 'ChartsBlock' block.

Namespace

Drupal\charts_blocks\Plugin\Block

Code

public function build() {
  $categories = explode(",", $this->configuration['categories']);
  $data = json_decode('[' . $this->configuration['data'] . ']', TRUE);
  if (!empty($this->configuration['data_series'])) {
    $seriesData = json_decode('[' . $this->configuration['data_series'] . ']', TRUE);
    foreach ($seriesData as &$data) {
      if (empty($data['type'])) {
        $data['type'] = $this->configuration['type'];
      }
    }
  }
  else {
    $seriesData = [
      [
        'name' => $this->configuration['series_label'],
        'color' => $this->configuration['color'][0],
        'type' => $this->configuration['type'],
        'data' => $data,
      ],
    ];
  }

  /*
   * Helps for pie and donut charts, which need more colors than configurable
   * for a single series.
   */
  $colors = $this->colors
    ->getDefaultColors();
  $options = [
    'library' => $this->configuration['library'],
    'type' => $this->configuration['type'],
    'grouping' => $this->configuration['grouping'],
    'field_colors' => $this->configuration['field_colors'],
    'colors' => $colors,
    'title' => $this->configuration['title'],
    'title_position' => $this->configuration['title_position'],
    'data_labels' => $this->configuration['data_labels'],
    'data_markers' => $this->configuration['data_markers'],
    'legend' => $this->configuration['legend'],
    'legend_position' => $this->configuration['legend_position'],
    'background' => $this->configuration['background'],
    'three_dimensional' => $this->configuration['three_dimensional'],
    'polar' => $this->configuration['polar'],
    'tooltips' => $this->configuration['tooltips'],
    'tooltips_use_html' => $this->configuration['tooltips_use_html'],
    'width' => $this->configuration['width'],
    'height' => $this->configuration['height'],
    'width_units' => $this->configuration['width_units'],
    'height_units' => $this->configuration['height_units'],
    'xaxis_title' => $this->configuration['xaxis_title'],
    'xaxis_labels_rotation' => $this->configuration['xaxis_labels_rotation'],
    'yaxis_title' => $this->configuration['yaxis_title'],
    'yaxis_min' => $this->configuration['yaxis_min'],
    'yaxis_max' => $this->configuration['yaxis_max'],
    'yaxis_prefix' => $this->configuration['yaxis_prefix'],
    'yaxis_suffix' => $this->configuration['yaxis_suffix'],
    'yaxis_decimal_count' => $this->configuration['yaxis_decimal_count'],
    'yaxis_labels_rotation' => $this->configuration['yaxis_labels_rotation'],
    'inherit_yaxis' => $this->configuration['inherit_yaxis'],
    'secondary_yaxis_title' => $this->configuration['secondary_yaxis_title'],
    'secondary_yaxis_min' => $this->configuration['secondary_yaxis_min'],
    'secondary_yaxis_max' => $this->configuration['secondary_yaxis_max'],
    'secondary_yaxis_prefix' => $this->configuration['secondary_yaxis_prefix'],
    'secondary_yaxis_suffix' => $this->configuration['secondary_yaxis_suffix'],
    'secondary_yaxis_decimal_count' => $this->configuration['secondary_yaxis_decimal_count'],
    'secondary_yaxis_labels_rotation' => $this->configuration['secondary_yaxis_labels_rotation'],
  ];

  // Set gauge specific fields.
  $gauge_fields = [
    'green_from',
    'green_to',
    'red_from',
    'red_to',
    'yellow_from',
    'yellow_to',
    'max',
    'min',
  ];
  foreach ($gauge_fields as $field) {
    $options[$field] = $this->configuration[$field];
  }

  // Adjustments added to provide the secondary y-axis features from Views.
  $secondaryOptions = [];
  if ($options['inherit_yaxis'] == 1) {
    $secondaryOptions[0]['inherit_yaxis'] = 0;
    $secondaryOptions[0]['style']['options']['yaxis_title'] = $options['secondary_yaxis_title'];
    $secondaryOptions[0]['style']['options']['yaxis_min'] = $options['secondary_yaxis_min'];
    $secondaryOptions[0]['style']['options']['yaxis_max'] = $options['secondary_yaxis_max'];
    $secondaryOptions[0]['style']['options']['yaxis_prefix'] = $options['secondary_yaxis_prefix'];
    $secondaryOptions[0]['style']['options']['yaxis_suffix'] = $options['secondary_yaxis_suffix'];
    $secondaryOptions[0]['style']['options']['yaxis_decimal_count'] = $options['secondary_yaxis_decimal_count'];
    $secondaryOptions[0]['style']['options']['yaxis_labels_rotation'] = $options['secondary_yaxis_labels_rotation'];
    $secondaryOptions[0]['type'] = 'chart';
  }

  // Creates a UUID for the chart ID.
  $uuid_service = \Drupal::service('uuid');
  $chartId = 'chart-' . $uuid_service
    ->generate();
  $build = [
    '#theme' => 'charts_blocks',
    '#library' => $this->configuration['library'],
    '#categories' => $categories,
    '#seriesData' => $seriesData,
    '#secondaryOptions' => $secondaryOptions,
    '#options' => $options,
    '#id' => $chartId,
    '#override' => [],
  ];
  return $build;
}