<?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\Form;use Symfony\Component\PropertyAccess\PropertyPathInterface;/** * A form group bundling multiple forms in a hierarchical structure. * * @author Bernhard Schussek <bschussek@gmail.com> */interface FormInterface extends \ArrayAccess, \Traversable, \Countable{ /** * Sets the parent form. * * @param FormInterface|null $parent The parent form or null if it's the root * * @return $this * * @throws Exception\AlreadySubmittedException if the form has already been submitted * @throws Exception\LogicException when trying to set a parent for a form with * an empty name */ public function setParent(self $parent = null); /** * Returns the parent form. * * @return self|null The parent form or null if there is none */ public function getParent(); /** * Adds or replaces a child to the form. * * @param FormInterface|string|int $child The FormInterface instance or the name of the child * @param string|null $type The child's type, if a name was passed * @param array $options The child's options, if a name was passed * * @return $this * * @throws Exception\AlreadySubmittedException if the form has already been submitted * @throws Exception\LogicException when trying to add a child to a non-compound form * @throws Exception\UnexpectedTypeException if $child or $type has an unexpected type */ public function add($child, $type = null, array $options = []); /** * Returns the child with the given name. * * @param string $name The name of the child * * @return self * * @throws \OutOfBoundsException if the named child does not exist */ public function get($name); /** * Returns whether a child with the given name exists. * * @param string $name The name of the child * * @return bool */ public function has($name); /** * Removes a child from the form. * * @param string $name The name of the child to remove * * @return $this * * @throws Exception\AlreadySubmittedException if the form has already been submitted */ public function remove($name); /** * Returns all children in this group. * * @return self[] */ public function all(); /** * Returns the errors of this form. * * @param bool $deep Whether to include errors of child forms as well * @param bool $flatten Whether to flatten the list of errors in case * $deep is set to true * * @return FormErrorIterator An iterator over the {@link FormError} * instances that where added to this form */ public function getErrors($deep = false, $flatten = true); /** * Updates the form with default model data. * * @param mixed $modelData The data formatted as expected for the underlying object * * @return $this * * @throws Exception\AlreadySubmittedException If the form has already been submitted * @throws Exception\LogicException If the view data does not match the expected type * according to {@link FormConfigInterface::getDataClass}. * @throws Exception\RuntimeException If listeners try to call setData in a cycle or if * the form inherits data from its parent * @throws Exception\TransformationFailedException If the synchronization failed. */ public function setData($modelData); /** * Returns the model data in the format needed for the underlying object. * * @return mixed When the field is not submitted, the default data is returned. * When the field is submitted, the default data has been bound * to the submitted view data. * * @throws Exception\RuntimeException If the form inherits data but has no parent */ public function getData(); /** * Returns the normalized data of the field, used as internal bridge * between model data and view data. * * @return mixed When the field is not submitted, the default data is returned. * When the field is submitted, the normalized submitted data * is returned if the field is synchronized with the view data, * null otherwise. * * @throws Exception\RuntimeException If the form inherits data but has no parent */ public function getNormData(); /** * Returns the view data of the field. * * It may be defined by {@link FormConfigInterface::getDataClass}. * * There are two cases: * * - When the form is compound the view data is mapped to the children. * Each child will use its mapped data as model data. * It can be an array, an object or null. * * - When the form is simple its view data is used to be bound * to the submitted data. * It can be a string or an array. * * In both cases the view data is the actual altered data on submission. * * @return mixed * * @throws Exception\RuntimeException If the form inherits data but has no parent */ public function getViewData(); /** * Returns the extra submitted data. * * @return array The submitted data which do not belong to a child */ public function getExtraData(); /** * Returns the form's configuration. * * @return FormConfigInterface The configuration instance */ public function getConfig(); /** * Returns whether the form is submitted. * * @return bool true if the form is submitted, false otherwise */ public function isSubmitted(); /** * Returns the name by which the form is identified in forms. * * Only root forms are allowed to have an empty name. * * @return string The name of the form */ public function getName(); /** * Returns the property path that the form is mapped to. * * @return PropertyPathInterface|null The property path instance */ public function getPropertyPath(); /** * Adds an error to this form. * * @param FormError $error * * @return $this */ public function addError(FormError $error); /** * Returns whether the form and all children are valid. * * If the form is not submitted, this method always returns false (but will throw an exception in 4.0). * * @return bool */ public function isValid(); /** * Returns whether the form is required to be filled out. * * If the form has a parent and the parent is not required, this method * will always return false. Otherwise the value set with setRequired() * is returned. * * @return bool */ public function isRequired(); /** * Returns whether this form is disabled. * * The content of a disabled form is displayed, but not allowed to be * modified. The validation of modified disabled forms should fail. * * Forms whose parents are disabled are considered disabled regardless of * their own state. * * @return bool */ public function isDisabled(); /** * Returns whether the form is empty. * * @return bool */ public function isEmpty(); /** * Returns whether the data in the different formats is synchronized. * * If the data is not synchronized, you can get the transformation failure * by calling {@link getTransformationFailure()}. * * If the form is not submitted, this method always returns true. * * @return bool */ public function isSynchronized(); /** * Returns the data transformation failure, if any, during submission. * * @return Exception\TransformationFailedException|null The transformation failure or null */ public function getTransformationFailure(); /** * Initializes the form tree. * * Should be called on the root form after constructing the tree. * * @return $this * * @throws Exception\RuntimeException If the form is not the root */ public function initialize(); /** * Inspects the given request and calls {@link submit()} if the form was * submitted. * * Internally, the request is forwarded to the configured * {@link RequestHandlerInterface} instance, which determines whether to * submit the form or not. * * @param mixed $request The request to handle * * @return $this */ public function handleRequest($request = null); /** * Submits data to the form. * * @param string|array|null $submittedData The submitted data * @param bool $clearMissing Whether to set fields to NULL * when they are missing in the * submitted data. This argument * is only used in compound form * * @return $this * * @throws Exception\AlreadySubmittedException if the form has already been submitted */ public function submit($submittedData, $clearMissing = true); /** * Returns the root of the form tree. * * @return self The root of the tree, may be the instance itself */ public function getRoot(); /** * Returns whether the field is the root of the form tree. * * @return bool */ public function isRoot(); /** * @return FormView The view */ public function createView(FormView $parent = null);}