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<?php namespace Example; class CheckBoxMenu extends \Example\Page { public function __construct() { parent::__construct(); $this->addBody(new \PHPFUI\Header('CheckBoxMenu Example')); $this->addBody('Multiple checkboxes as a menu.');	$post = \PHPFUI\Session::getFlash('post');	$posted = $post ? \json_decode($post, true) : [];	$form = new \PHPFUI\Form($this);	$form->setAreYouSure(false);	$form->add($this->getCheckBoxMenu($form, 'selections', ['A', 'B', 'C', 'D', 'F'], $posted['selections'] ?? []));	$form->add(new \PHPFUI\Header('Vertical', 4));	$vertical = $this->getCheckBoxMenu($form, 'options', ['Leather Seats', 'Sunroof', 'Trim', 'Alloy Wheels', 'AWD'], $posted['options'] ?? []);	$vertical->addClass('vertical'); // Example page needs a save field to show post information	$form->add(new \PHPFUI\Input\Hidden('save', 'save'));	$form->add($vertical); $this->addBody($form);	} /** * @param array<string> $options * @param array<string, string> $posted */ private function getCheckBoxMenu(\PHPFUI\Form $form, string $name, array $options, array $posted) : \PHPFUI\Input\CheckBoxMenu {	$checkBoxMenu = new \PHPFUI\Input\CheckBoxMenu($name);	$checkBoxMenu->addAll(); foreach ($options as $index => $item)	{	$checkBoxMenu->addCheckBox($item, isset($posted[$index]), $item);	}	$checkBoxMenu->addSubmit($form, 'Apply'); return $checkBoxMenu;	}	}