Cluster.php in Openlayers 7.3
Same filename in this branch
Source: Cluster.
Namespace
Drupal\openlayers\Plugin\Source\ClusterFile
src/Plugin/Source/Cluster/Cluster.phpView source
<?php
/**
* @file
* Source: Cluster.
*/
namespace Drupal\openlayers\Plugin\Source\Cluster;
use Drupal\openlayers\Openlayers;
use Drupal\openlayers\Types\Source;
/**
* Class Cluster.
*
* @OpenlayersPlugin(
* id = "Cluster"
* )
*/
class Cluster extends Source {
/**
* {@inheritdoc}
*/
public function optionsForm(array &$form, array &$form_state) {
$form['options']['source'] = array(
'#type' => 'select',
'#title' => t('Source'),
'#empty_option' => t('- Select a Source -'),
'#default_value' => $this
->getOption('source', ''),
'#description' => t('Select the source.'),
'#options' => Openlayers::loadAllAsOptions('Source'),
'#required' => TRUE,
);
$form['options']['distance'] = array(
'#type' => 'textfield',
'#title' => t('Cluster distance'),
'#default_value' => isset($form_state['item']->options['distance']) ? $form_state['item']->options['distance'] : 50,
'#description' => t('Cluster distance.'),
);
$zoomDistance = $this
->getOption('zoomDistance', array());
$zoomDistance = array_map(function ($v, $k) {
return $k . ':' . $v;
}, $zoomDistance, array_keys($zoomDistance));
$form['options']['zoomDistance'] = array(
'#title' => t('Set cluster distance per zoom level'),
'#description' => t('Define a zoom level / cluster distance per line. Use the notation zoom:distance. If no value is given for a zoom level it falls back to the default distance.'),
'#type' => 'textarea',
'#default_value' => implode(PHP_EOL, array_values($zoomDistance)),
);
}
/**
* {@inheritdoc}
*/
public function optionsFormSubmit(array $form, array &$form_state) {
if (!empty($form_state['values']['options']['zoomDistance'])) {
$zoom_distance = array();
foreach (explode("\n", $form_state['values']['options']['zoomDistance']) as $data) {
$data = array_map('trim', explode(':', trim($data), 2));
if (!empty($data)) {
$zoom_distance[(int) $data[0]] = (int) (isset($data[1]) ? $data[1] : $data[0]);
}
}
$form_state['values']['options']['zoomDistance'] = $zoom_distance;
}
parent::optionsFormSubmit($form, $form_state);
}
/**
* {@inheritdoc}
*/
public function optionsToObjects() {
$import = parent::optionsToObjects();
if ($source = $this
->getOption('source')) {
$source = Openlayers::load('source', $source);
// This source is a dependency of the current one,
// we need a lighter weight.
$this
->setWeight($source
->getWeight() + 1);
$import = array_merge($source
->getCollection()
->getFlatList(), $import);
}
return $import;
}
}