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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Console\Question;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\LogicException;
/**
* Represents a Question.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Question
{
private $question;
private $attempts;
private $hidden = false;
private $hiddenFallback = true;
private $autocompleterValues;
private $validator;
private $default;
private $normalizer;
/**
* Constructor.
*
* @param string $question The question to ask to the user
* @param mixed $default The default answer to return if the user enters nothing
*/
public function __construct($question, $default = null)
{
$this->question = $question;
$this->default = $default;
}
/**
* Returns the question.
*
* @return string
*/
public function getQuestion()
{
return $this->question;
}
/**
* Returns the default answer.
*
* @return mixed
*/
public function getDefault()
{
return $this->default;
}
/**
* Returns whether the user response must be hidden.
*
* @return bool
*/
public function isHidden()
{
return $this->hidden;
}
/**
* Sets whether the user response must be hidden or not.
*
* @param bool $hidden
*
* @return Question The current instance
*
* @throws LogicException In case the autocompleter is also used
*/
public function setHidden($hidden)
{
if ($this->autocompleterValues) {
throw new LogicException('A hidden question cannot use the autocompleter.');
}
$this->hidden = (bool) $hidden;
return $this;
}
/**
* In case the response can not be hidden, whether to fallback on non-hidden question or not.
*
* @return bool
*/
public function isHiddenFallback()
{
return $this->hiddenFallback;
}
/**
* Sets whether to fallback on non-hidden question if the response can not be hidden.
*
* @param bool $fallback
*
* @return Question The current instance
*/
public function setHiddenFallback($fallback)
{
$this->hiddenFallback = (bool) $fallback;
return $this;
}
/**
* Gets values for the autocompleter.
*
* @return null|array|\Traversable
*/
public function getAutocompleterValues()
{
return $this->autocompleterValues;
}
/**
* Sets values for the autocompleter.
*
* @param null|array|\Traversable $values
*
* @return Question The current instance
*
* @throws InvalidArgumentException
* @throws LogicException
*/
public function setAutocompleterValues($values)
{
if (is_array($values)) {
$values = $this->isAssoc($values) ? array_merge(array_keys($values), array_values($values)) : array_values($values);
}
if (null !== $values && !is_array($values)) {
if (!$values instanceof \Traversable || !$values instanceof \Countable) {
throw new InvalidArgumentException('Autocompleter values can be either an array, `null` or an object implementing both `Countable` and `Traversable` interfaces.');
}
}
if ($this->hidden) {
throw new LogicException('A hidden question cannot use the autocompleter.');
}
$this->autocompleterValues = $values;
return $this;
}
/**
* Sets a validator for the question.
*
* @param null|callable $validator
*
* @return Question The current instance
*/
public function setValidator(callable $validator = null)
{
$this->validator = $validator;
return $this;
}
/**
* Gets the validator for the question.
*
* @return null|callable
*/
public function getValidator()
{
return $this->validator;
}
/**
* Sets the maximum number of attempts.
*
* Null means an unlimited number of attempts.
*
* @param null|int $attempts
*
* @return Question The current instance
*
* @throws InvalidArgumentException In case the number of attempts is invalid.
*/
public function setMaxAttempts($attempts)
{
if (null !== $attempts && $attempts < 1) {
throw new InvalidArgumentException('Maximum number of attempts must be a positive value.');
}
$this->attempts = $attempts;
return $this;
}
/**
* Gets the maximum number of attempts.
*
* Null means an unlimited number of attempts.
*
* @return null|int
*/
public function getMaxAttempts()
{
return $this->attempts;
}
/**
* Sets a normalizer for the response.
*
* The normalizer can be a callable (a string), a closure or a class implementing __invoke.
*
* @param callable $normalizer
*
* @return Question The current instance
*/
public function setNormalizer(callable $normalizer)
{
$this->normalizer = $normalizer;
return $this;
}
/**
* Gets the normalizer for the response.
*
* The normalizer can ba a callable (a string), a closure or a class implementing __invoke.
*
* @return callable
*/
public function getNormalizer()
{
return $this->normalizer;
}
protected function isAssoc($array)
{
return (bool) count(array_filter(array_keys($array), 'is_string'));
}
}
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