/**
* {@inheritdoc}
*/
public function preBuild(array &$build, ObjectInterface $context = NULL)
{
$map_id = $context->getId();
$layers = $this->getOption('layers', array());
$items = array();
$map_layers = $context->getObjects('layer');
$element_type = $this->getOption('multiselect', FALSE) ? 'checkbox' : 'radio';
// Only handle layers available in the map and configured in the control.
// @TODO: use Form API (with form_process_* and stuff)
$labels = $this->getOption('layer_labels', array());
foreach ($map_layers as $i => $map_layer) {
if (isset($layers[$map_layer->getMachineName()])) {
$classes = array(drupal_html_class($map_layer->getMachineName()));
$checked = '';
if ($element_type == 'checkbox') {
if ($map_layer->getOption('visible', 1)) {
$checked = 'checked ';
$classes[] = 'active';
}
}
$label = $map_layer->getName();
if (isset($labels[$map_layer->getMachineName()])) {
$label = openlayers_i18n_string('openlayers:layerswitcher:' . $this->getMachineName() . ':' . $map_layer->getMachineName() . ':label', $labels[$map_layer->getMachineName()], array('sanitize' => TRUE));
}
$items[] = array('data' => '<label><input type="' . $element_type . '" name="layer" ' . $checked . 'value="' . $map_layer->getMachineName() . '">' . $label . '</label>', 'id' => drupal_html_id($map_id . '-' . $map_layer->getMachineName()), 'class' => $classes);
}
}
$title = openlayers_i18n_string('openlayers:layerswitcher:' . $this->getMachineName() . ':title', $this->getOption('label', 'Layers'), array('sanitize' => TRUE));
$layerswitcher = array('#theme' => 'item_list', '#type' => 'ul', '#title' => $title, '#items' => $items, '#attributes' => array('id' => drupal_html_id($this->getMachineName() . '-items')));
$this->setOption('element', '<div id="' . drupal_html_id($this->getMachineName()) . '" class="' . drupal_html_class($this->getMachineName()) . ' layerswitcher">' . drupal_render($layerswitcher) . '</div>');
// Allow the parent class to perform it's pre-build actions.
parent::preBuild($build, $context);
}
