/** * {@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); }