function openlayers_behavior_cluster::options_form in Openlayers 6.2

Same name and namespace in other branches

1. 7.2 plugins/behaviors/openlayers_behavior_cluster.inc \openlayers_behavior_cluster::options_form()

Provide form for configurations per map.

Overrides openlayers_behavior::options_form

File

includes/behaviors/openlayers_behavior_cluster.inc, line 33

Implementation of OpenLayers Cluster behavior.

Class

openlayers_behavior_cluster

Cluster behavior

Code

function options_form($defaults) {

  // Only prompt for vector layers
  $vector_layers = array();
  foreach ($this->map['layers'] as $id => $name) {
    $layer = openlayers_layer_load($id);
    if (isset($layer->data['vector']) && $layer->data['vector'] == TRUE) {
      $vector_layers[$id] = $name;
    }
  }
  return array(
    'clusterlayer' => array(
      '#title' => t('Layers'),
      '#type' => 'checkboxes',
      '#options' => $vector_layers,
      '#description' => t('Select layers to cluster.'),
      '#default_value' => isset($defaults['clusterlayer']) ? $defaults['clusterlayer'] : array(),
    ),
    'distance' => array(
      '#type' => 'textfield',
      '#default_value' => isset($defaults['distance']) ? $defaults['distance'] : 20,
      '#size' => 5,
      '#title' => t('Distance'),
      '#description' => t('Pixel distance between features that should ' . 'be considered a single cluster'),
    ),
    'threshold' => array(
      '#type' => 'textfield',
      '#default_value' => isset($defaults['threshold']) ? $defaults['threshold'] : NULL,
      '#size' => 5,
      '#title' => t('Threshold'),
      '#description' => t('Optional threshold below which original ' . 'features will be added to the layer instead of clusters'),
    ),
  );
}