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<?php namespace PHPFUI\Input; /** * Simple wrapper for OptGroup used by Select. Countable. */ class OptGroup extends \PHPFUI\HTML5Element implements \Countable { /** @var array<array<string, string | null>> */ protected array $options = []; /** * Construct a OptGroup * * @param string $label of the OptGroup */ public function __construct(string $label) { parent::__construct('optgroup'); $this->addAttribute('label', $label);	} /** * Add an option * * @param string $label for the option * @param ?string $value for the Select. Returned when posted. * @param bool $selected true if selected, default false * @param bool $disabled default false */ public function addOption(string $label, ?string $value = null, bool $selected = false, bool $disabled = false) : static {	$label = '' === $label ? '&nbsp;' : \PHPFUI\TextHelper::htmlentities($label); $this->options[] = ['label' => $label, 'value' => $value, 'selected' => $selected ? ' selected' : '', 'disabled' => $disabled ? ' disabled' : '', ]; return $this;	} /** * Return the number of options added */ public function count() : int { return \count($this->options);	} protected function getBody() : string {	$output = ''; foreach ($this->options as $option)	{	$selected = $option['selected'];	$disabled = $option['disabled'];	$value = null !== $option['value'] ? " value='{$option['value']}'" : '';	$output .= "<option{$value}{$selected}{$disabled}>{$option['label']}</option>";	} return $output;	}	}