Viewing file:  ChoiceFormField.php (9.14 KB) -rw-r--r--
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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\DomCrawler\Field;
/**
* ChoiceFormField represents a choice form field.
*
* It is constructed from a HTML select tag, or a HTML checkbox, or radio inputs.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class ChoiceFormField extends FormField
{
/**
* @var string
*/
private $type;
/**
* @var bool
*/
private $multiple;
/**
* @var array
*/
private $options;
/**
* @var bool
*/
private $validationDisabled = false;
/**
* Returns true if the field should be included in the submitted values.
*
* @return bool true if the field should be included in the submitted values, false otherwise
*/
public function hasValue()
{
// don't send a value for unchecked checkboxes
if (in_array($this->type, array('checkbox', 'radio')) && null === $this->value) {
return false;
}
return true;
}
/**
* Check if the current selected option is disabled.
*
* @return bool
*/
public function isDisabled()
{
if (parent::isDisabled() && 'select' === $this->type) {
return true;
}
foreach ($this->options as $option) {
if ($option['value'] == $this->value && $option['disabled']) {
return true;
}
}
return false;
}
/**
* Sets the value of the field.
*
* @param string $value The value of the field
*/
public function select($value)
{
$this->setValue($value);
}
/**
* Ticks a checkbox.
*
* @throws \LogicException When the type provided is not correct
*/
public function tick()
{
if ('checkbox' !== $this->type) {
throw new \LogicException(sprintf('You cannot tick "%s" as it is not a checkbox (%s).', $this->name, $this->type));
}
$this->setValue(true);
}
/**
* Ticks a checkbox.
*
* @throws \LogicException When the type provided is not correct
*/
public function untick()
{
if ('checkbox' !== $this->type) {
throw new \LogicException(sprintf('You cannot tick "%s" as it is not a checkbox (%s).', $this->name, $this->type));
}
$this->setValue(false);
}
/**
* Sets the value of the field.
*
* @param string $value The value of the field
*
* @throws \InvalidArgumentException When value type provided is not correct
*/
public function setValue($value)
{
if ('checkbox' === $this->type && false === $value) {
// uncheck
$this->value = null;
} elseif ('checkbox' === $this->type && true === $value) {
// check
$this->value = $this->options[0]['value'];
} else {
if (is_array($value)) {
if (!$this->multiple) {
throw new \InvalidArgumentException(sprintf('The value for "%s" cannot be an array.', $this->name));
}
foreach ($value as $v) {
if (!$this->containsOption($v, $this->options)) {
throw new \InvalidArgumentException(sprintf('Input "%s" cannot take "%s" as a value (possible values: %s).', $this->name, $v, implode(', ', $this->availableOptionValues())));
}
}
} elseif (!$this->containsOption($value, $this->options)) {
throw new \InvalidArgumentException(sprintf('Input "%s" cannot take "%s" as a value (possible values: %s).', $this->name, $value, implode(', ', $this->availableOptionValues())));
}
if ($this->multiple) {
$value = (array) $value;
}
if (is_array($value)) {
$this->value = $value;
} else {
parent::setValue($value);
}
}
}
/**
* Adds a choice to the current ones.
*
* This method should only be used internally.
*
* @param \DOMElement $node
*
* @throws \LogicException When choice provided is not multiple nor radio
*/
public function addChoice(\DOMElement $node)
{
if (!$this->multiple && 'radio' !== $this->type) {
throw new \LogicException(sprintf('Unable to add a choice for "%s" as it is not multiple or is not a radio button.', $this->name));
}
$option = $this->buildOptionValue($node);
$this->options[] = $option;
if ($node->hasAttribute('checked')) {
$this->value = $option['value'];
}
}
/**
* Returns the type of the choice field (radio, select, or checkbox).
*
* @return string The type
*/
public function getType()
{
return $this->type;
}
/**
* Returns true if the field accepts multiple values.
*
* @return bool true if the field accepts multiple values, false otherwise
*/
public function isMultiple()
{
return $this->multiple;
}
/**
* Initializes the form field.
*
* @throws \LogicException When node type is incorrect
*/
protected function initialize()
{
if ('input' !== $this->node->nodeName && 'select' !== $this->node->nodeName) {
throw new \LogicException(sprintf('A ChoiceFormField can only be created from an input or select tag (%s given).', $this->node->nodeName));
}
if ('input' === $this->node->nodeName && 'checkbox' !== strtolower($this->node->getAttribute('type')) && 'radio' !== strtolower($this->node->getAttribute('type'))) {
throw new \LogicException(sprintf('A ChoiceFormField can only be created from an input tag with a type of checkbox or radio (given type is %s).', $this->node->getAttribute('type')));
}
$this->value = null;
$this->options = array();
$this->multiple = false;
if ('input' == $this->node->nodeName) {
$this->type = strtolower($this->node->getAttribute('type'));
$optionValue = $this->buildOptionValue($this->node);
$this->options[] = $optionValue;
if ($this->node->hasAttribute('checked')) {
$this->value = $optionValue['value'];
}
} else {
$this->type = 'select';
if ($this->node->hasAttribute('multiple')) {
$this->multiple = true;
$this->value = array();
$this->name = str_replace('[]', '', $this->name);
}
$found = false;
foreach ($this->xpath->query('descendant::option', $this->node) as $option) {
$optionValue = $this->buildOptionValue($option);
$this->options[] = $optionValue;
if ($option->hasAttribute('selected')) {
$found = true;
if ($this->multiple) {
$this->value[] = $optionValue['value'];
} else {
$this->value = $optionValue['value'];
}
}
}
// if no option is selected and if it is a simple select box, take the first option as the value
if (!$found && !$this->multiple && !empty($this->options)) {
$this->value = $this->options[0]['value'];
}
}
}
/**
* Returns option value with associated disabled flag.
*
* @param \DOMElement $node
*
* @return array
*/
private function buildOptionValue(\DOMElement $node)
{
$option = array();
$defaultDefaultValue = 'select' === $this->node->nodeName ? '' : 'on';
$defaultValue = (isset($node->nodeValue) && !empty($node->nodeValue)) ? $node->nodeValue : $defaultDefaultValue;
$option['value'] = $node->hasAttribute('value') ? $node->getAttribute('value') : $defaultValue;
$option['disabled'] = $node->hasAttribute('disabled');
return $option;
}
/**
* Checks whether given value is in the existing options.
*
* @param string $optionValue
* @param array $options
*
* @return bool
*/
public function containsOption($optionValue, $options)
{
if ($this->validationDisabled) {
return true;
}
foreach ($options as $option) {
if ($option['value'] == $optionValue) {
return true;
}
}
return false;
}
/**
* Returns list of available field options.
*
* @return array
*/
public function availableOptionValues()
{
$values = array();
foreach ($this->options as $option) {
$values[] = $option['value'];
}
return $values;
}
/**
* Disables the internal validation of the field.
*
* @return self
*/
public function disableValidation()
{
$this->validationDisabled = true;
return $this;
}
}
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