/**
* {@inheritdoc}
*/
public function createView(ChoiceListInterface $list, $preferredChoices = null, $label = null, $index = null, $groupBy = null, $attr = null)
{
// Backwards compatibility
if ($list instanceof LegacyChoiceListAdapter && empty($preferredChoices) && null === $label && null === $index && null === $groupBy && null === $attr) {
$mapToNonLegacyChoiceView = function (LegacyChoiceView &$choiceView) {
$choiceView = new ChoiceView($choiceView->data, $choiceView->value, $choiceView->label);
};
$adaptedList = $list->getAdaptedList();
$remainingViews = $adaptedList->getRemainingViews();
$preferredViews = $adaptedList->getPreferredViews();
array_walk_recursive($remainingViews, $mapToNonLegacyChoiceView);
array_walk_recursive($preferredViews, $mapToNonLegacyChoiceView);
return new ChoiceListView($remainingViews, $preferredViews);
}
$preferredViews = array();
$otherViews = array();
$choices = $list->getChoices();
$keys = $list->getOriginalKeys();
if (!is_callable($preferredChoices) && !empty($preferredChoices)) {
$preferredChoices = function ($choice) use($preferredChoices) {
return false !== array_search($choice, $preferredChoices, true);
};
}
// The names are generated from an incrementing integer by default
if (null === $index) {
$index = 0;
}
// If $groupBy is a callable, choices are added to the group with the
// name returned by the callable. If the callable returns null, the
// choice is not added to any group
if (is_callable($groupBy)) {
foreach ($choices as $value => $choice) {
self::addChoiceViewGroupedBy($groupBy, $choice, (string) $value, $label, $keys, $index, $attr, $preferredChoices, $preferredViews, $otherViews);
}
} else {
// Otherwise use the original structure of the choices
self::addChoiceViewsGroupedBy($list->getStructuredValues(), $label, $choices, $keys, $index, $attr, $preferredChoices, $preferredViews, $otherViews);
}
// Remove any empty group view that may have been created by
// addChoiceViewGroupedBy()
foreach ($preferredViews as $key => $view) {
if ($view instanceof ChoiceGroupView && 0 === count($view->choices)) {
unset($preferredViews[$key]);
}
}
foreach ($otherViews as $key => $view) {
if ($view instanceof ChoiceGroupView && 0 === count($view->choices)) {
unset($otherViews[$key]);
}
}
return new ChoiceListView($otherViews, $preferredViews);
}
