Form.php in Zircon Profile 8

Namespace

Symfony\Component\DomCrawler

File

vendor/symfony/dom-crawler/Form.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[e-mail]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\DomCrawler;

use Symfony\Component\DomCrawler\Field\ChoiceFormField;
use Symfony\Component\DomCrawler\Field\FormField;

/**
 * Form represents an HTML form.
 *
 * @author Fabien Potencier <[e-mail]>
 */
class Form extends Link implements \ArrayAccess {

  /**
   * @var \DOMElement
   */
  private $button;

  /**
   * @var FormFieldRegistry
   */
  private $fields;

  /**
   * @var string
   */
  private $baseHref;

  /**
   * Constructor.
   *
   * @param \DOMElement $node       A \DOMElement instance
   * @param string      $currentUri The URI of the page where the form is embedded
   * @param string      $method     The method to use for the link (if null, it defaults to the method defined by the form)
   * @param string      $baseHref   The URI of the <base> used for relative links, but not for empty action
   *
   * @throws \LogicException if the node is not a button inside a form tag
   */
  public function __construct(\DOMElement $node, $currentUri, $method = null, $baseHref = null) {
    parent::__construct($node, $currentUri, $method);
    $this->baseHref = $baseHref;
    $this
      ->initialize();
  }

  /**
   * Gets the form node associated with this form.
   *
   * @return \DOMElement A \DOMElement instance
   */
  public function getFormNode() {
    return $this->node;
  }

  /**
   * Sets the value of the fields.
   *
   * @param array $values An array of field values
   *
   * @return Form
   */
  public function setValues(array $values) {
    foreach ($values as $name => $value) {
      $this->fields
        ->set($name, $value);
    }
    return $this;
  }

  /**
   * Gets the field values.
   *
   * The returned array does not include file fields (@see getFiles).
   *
   * @return array An array of field values.
   */
  public function getValues() {
    $values = array();
    foreach ($this->fields
      ->all() as $name => $field) {
      if ($field
        ->isDisabled()) {
        continue;
      }
      if (!$field instanceof Field\FileFormField && $field
        ->hasValue()) {
        $values[$name] = $field
          ->getValue();
      }
    }
    return $values;
  }

  /**
   * Gets the file field values.
   *
   * @return array An array of file field values.
   */
  public function getFiles() {
    if (!in_array($this
      ->getMethod(), array(
      'POST',
      'PUT',
      'DELETE',
      'PATCH',
    ))) {
      return array();
    }
    $files = array();
    foreach ($this->fields
      ->all() as $name => $field) {
      if ($field
        ->isDisabled()) {
        continue;
      }
      if ($field instanceof Field\FileFormField) {
        $files[$name] = $field
          ->getValue();
      }
    }
    return $files;
  }

  /**
   * Gets the field values as PHP.
   *
   * This method converts fields with the array notation
   * (like foo[bar] to arrays) like PHP does.
   *
   * @return array An array of field values.
   */
  public function getPhpValues() {
    $values = array();
    foreach ($this
      ->getValues() as $name => $value) {
      $qs = http_build_query(array(
        $name => $value,
      ), '', '&');
      if (!empty($qs)) {
        parse_str($qs, $expandedValue);
        $varName = substr($name, 0, strlen(key($expandedValue)));
        $values = array_replace_recursive($values, array(
          $varName => current($expandedValue),
        ));
      }
    }
    return $values;
  }

  /**
   * Gets the file field values as PHP.
   *
   * This method converts fields with the array notation
   * (like foo[bar] to arrays) like PHP does.
   *
   * @return array An array of field values.
   */
  public function getPhpFiles() {
    $values = array();
    foreach ($this
      ->getFiles() as $name => $value) {
      $qs = http_build_query(array(
        $name => $value,
      ), '', '&');
      if (!empty($qs)) {
        parse_str($qs, $expandedValue);
        $varName = substr($name, 0, strlen(key($expandedValue)));
        $values = array_replace_recursive($values, array(
          $varName => current($expandedValue),
        ));
      }
    }
    return $values;
  }

  /**
   * Gets the URI of the form.
   *
   * The returned URI is not the same as the form "action" attribute.
   * This method merges the value if the method is GET to mimics
   * browser behavior.
   *
   * @return string The URI
   */
  public function getUri() {
    $uri = parent::getUri();
    if (!in_array($this
      ->getMethod(), array(
      'POST',
      'PUT',
      'DELETE',
      'PATCH',
    ))) {
      $query = parse_url($uri, PHP_URL_QUERY);
      $currentParameters = array();
      if ($query) {
        parse_str($query, $currentParameters);
      }
      $queryString = http_build_query(array_merge($currentParameters, $this
        ->getValues()), null, '&');
      $pos = strpos($uri, '?');
      $base = false === $pos ? $uri : substr($uri, 0, $pos);
      $uri = rtrim($base . '?' . $queryString, '?');
    }
    return $uri;
  }
  protected function getRawUri() {
    return $this->node
      ->getAttribute('action');
  }

  /**
   * Gets the form method.
   *
   * If no method is defined in the form, GET is returned.
   *
   * @return string The method
   */
  public function getMethod() {
    if (null !== $this->method) {
      return $this->method;
    }
    return $this->node
      ->getAttribute('method') ? strtoupper($this->node
      ->getAttribute('method')) : 'GET';
  }

  /**
   * Returns true if the named field exists.
   *
   * @param string $name The field name
   *
   * @return bool true if the field exists, false otherwise
   */
  public function has($name) {
    return $this->fields
      ->has($name);
  }

  /**
   * Removes a field from the form.
   *
   * @param string $name The field name
   *
   * @throws \InvalidArgumentException when the name is malformed
   */
  public function remove($name) {
    $this->fields
      ->remove($name);
  }

  /**
   * Gets a named field.
   *
   * @param string $name The field name
   *
   * @return FormField The field instance
   *
   * @throws \InvalidArgumentException When field is not present in this form
   */
  public function get($name) {
    return $this->fields
      ->get($name);
  }

  /**
   * Sets a named field.
   *
   * @param FormField $field The field
   */
  public function set(FormField $field) {
    $this->fields
      ->add($field);
  }

  /**
   * Gets all fields.
   *
   * @return FormField[] An array of fields
   */
  public function all() {
    return $this->fields
      ->all();
  }

  /**
   * Returns true if the named field exists.
   *
   * @param string $name The field name
   *
   * @return bool true if the field exists, false otherwise
   */
  public function offsetExists($name) {
    return $this
      ->has($name);
  }

  /**
   * Gets the value of a field.
   *
   * @param string $name The field name
   *
   * @return FormField The associated Field instance
   *
   * @throws \InvalidArgumentException if the field does not exist
   */
  public function offsetGet($name) {
    return $this->fields
      ->get($name);
  }

  /**
   * Sets the value of a field.
   *
   * @param string       $name  The field name
   * @param string|array $value The value of the field
   *
   * @throws \InvalidArgumentException if the field does not exist
   */
  public function offsetSet($name, $value) {
    $this->fields
      ->set($name, $value);
  }

  /**
   * Removes a field from the form.
   *
   * @param string $name The field name
   */
  public function offsetUnset($name) {
    $this->fields
      ->remove($name);
  }

  /**
   * Disables validation.
   *
   * @return self
   */
  public function disableValidation() {
    foreach ($this->fields
      ->all() as $field) {
      if ($field instanceof Field\ChoiceFormField) {
        $field
          ->disableValidation();
      }
    }
    return $this;
  }

  /**
   * Sets the node for the form.
   *
   * Expects a 'submit' button \DOMElement and finds the corresponding form element, or the form element itself.
   *
   * @param \DOMElement $node A \DOMElement instance
   *
   * @throws \LogicException If given node is not a button or input or does not have a form ancestor
   */
  protected function setNode(\DOMElement $node) {
    $this->button = $node;
    if ('button' === $node->nodeName || 'input' === $node->nodeName && in_array(strtolower($node
      ->getAttribute('type')), array(
      'submit',
      'button',
      'image',
    ))) {
      if ($node
        ->hasAttribute('form')) {

        // if the node has the HTML5-compliant 'form' attribute, use it
        $formId = $node
          ->getAttribute('form');
        $form = $node->ownerDocument
          ->getElementById($formId);
        if (null === $form) {
          throw new \LogicException(sprintf('The selected node has an invalid form attribute (%s).', $formId));
        }
        $this->node = $form;
        return;
      }

      // we loop until we find a form ancestor
      do {
        if (null === ($node = $node->parentNode)) {
          throw new \LogicException('The selected node does not have a form ancestor.');
        }
      } while ('form' !== $node->nodeName);
    }
    elseif ('form' !== $node->nodeName) {
      throw new \LogicException(sprintf('Unable to submit on a "%s" tag.', $node->nodeName));
    }
    $this->node = $node;
  }

  /**
   * Adds form elements related to this form.
   *
   * Creates an internal copy of the submitted 'button' element and
   * the form node or the entire document depending on whether we need
   * to find non-descendant elements through HTML5 'form' attribute.
   */
  private function initialize() {
    $this->fields = new FormFieldRegistry();
    $xpath = new \DOMXPath($this->node->ownerDocument);

    // add submitted button if it has a valid name
    if ('form' !== $this->button->nodeName && $this->button
      ->hasAttribute('name') && $this->button
      ->getAttribute('name')) {
      if ('input' == $this->button->nodeName && 'image' == strtolower($this->button
        ->getAttribute('type'))) {
        $name = $this->button
          ->getAttribute('name');
        $this->button
          ->setAttribute('value', '0');

        // temporarily change the name of the input node for the x coordinate
        $this->button
          ->setAttribute('name', $name . '.x');
        $this
          ->set(new Field\InputFormField($this->button));

        // temporarily change the name of the input node for the y coordinate
        $this->button
          ->setAttribute('name', $name . '.y');
        $this
          ->set(new Field\InputFormField($this->button));

        // restore the original name of the input node
        $this->button
          ->setAttribute('name', $name);
      }
      else {
        $this
          ->set(new Field\InputFormField($this->button));
      }
    }

    // find form elements corresponding to the current form
    if ($this->node
      ->hasAttribute('id')) {

      // corresponding elements are either descendants or have a matching HTML5 form attribute
      $formId = Crawler::xpathLiteral($this->node
        ->getAttribute('id'));
      $fieldNodes = $xpath
        ->query(sprintf('descendant::input[@form=%s] | descendant::button[@form=%s] | descendant::textarea[@form=%s] | descendant::select[@form=%s] | //form[@id=%s]//input[not(@form)] | //form[@id=%s]//button[not(@form)] | //form[@id=%s]//textarea[not(@form)] | //form[@id=%s]//select[not(@form)]', $formId, $formId, $formId, $formId, $formId, $formId, $formId, $formId));
      foreach ($fieldNodes as $node) {
        $this
          ->addField($node);
      }
    }
    else {

      // do the xpath query with $this->node as the context node, to only find descendant elements
      // however, descendant elements with form attribute are not part of this form
      $fieldNodes = $xpath
        ->query('descendant::input[not(@form)] | descendant::button[not(@form)] | descendant::textarea[not(@form)] | descendant::select[not(@form)]', $this->node);
      foreach ($fieldNodes as $node) {
        $this
          ->addField($node);
      }
    }
    if ($this->baseHref && '' !== $this->node
      ->getAttribute('action')) {
      $this->currentUri = $this->baseHref;
    }
  }
  private function addField(\DOMElement $node) {
    if (!$node
      ->hasAttribute('name') || !$node
      ->getAttribute('name')) {
      return;
    }
    $nodeName = $node->nodeName;
    if ('select' == $nodeName || 'input' == $nodeName && 'checkbox' == strtolower($node
      ->getAttribute('type'))) {
      $this
        ->set(new Field\ChoiceFormField($node));
    }
    elseif ('input' == $nodeName && 'radio' == strtolower($node
      ->getAttribute('type'))) {

      // there may be other fields with the same name that are no choice
      // fields already registered (see https://github.com/symfony/symfony/issues/11689)
      if ($this
        ->has($node
        ->getAttribute('name')) && $this
        ->get($node
        ->getAttribute('name')) instanceof ChoiceFormField) {
        $this
          ->get($node
          ->getAttribute('name'))
          ->addChoice($node);
      }
      else {
        $this
          ->set(new Field\ChoiceFormField($node));
      }
    }
    elseif ('input' == $nodeName && 'file' == strtolower($node
      ->getAttribute('type'))) {
      $this
        ->set(new Field\FileFormField($node));
    }
    elseif ('input' == $nodeName && !in_array(strtolower($node
      ->getAttribute('type')), array(
      'submit',
      'button',
      'image',
    ))) {
      $this
        ->set(new Field\InputFormField($node));
    }
    elseif ('textarea' == $nodeName) {
      $this
        ->set(new Field\TextareaFormField($node));
    }
  }

}

Classes

Name	Description
Form	Form represents an HTML form.