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