<?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\Form\Exception\BadMethodCallException;
/**
* @author Bernhard Schussek <bschussek@gmail.com>
*
* @implements \ArrayAccess<int|string, FormView>
* @implements \IteratorAggregate<int|string, FormView>
*/
class FormView implements \ArrayAccess, \IteratorAggregate, \Countable
{
/**
* The variables assigned to this view.
*/
public $vars = [
'value' => null,
'attr' => [],
];
/**
* The parent view.
*/
public $parent;
/**
* The child views.
*
* @var array<int|string, FormView>
*/
public $children = [];
/**
* Is the form attached to this renderer rendered?
*
* Rendering happens when either the widget or the row method was called.
* Row implicitly includes widget, however certain rendering mechanisms
* have to skip widget rendering when a row is rendered.
*/
private bool $rendered = false;
private bool $methodRendered = false;
public function __construct(self $parent = null)
{
$this->parent = $parent;
}
/**
* Returns whether the view was already rendered.
*/
public function isRendered(): bool
{
if (true === $this->rendered || 0 === \count($this->children)) {
return $this->rendered;
}
foreach ($this->children as $child) {
if (!$child->isRendered()) {
return false;
}
}
return $this->rendered = true;
}
/**
* Marks the view as rendered.
*
* @return $this
*/
public function setRendered(): static
{
$this->rendered = true;
return $this;
}
public function isMethodRendered(): bool
{
return $this->methodRendered;
}
public function setMethodRendered()
{
$this->methodRendered = true;
}
/**
* Returns a child by name (implements \ArrayAccess).
*
* @param int|string $name The child name
*/
public function offsetGet(mixed $name): self
{
return $this->children[$name];
}
/**
* Returns whether the given child exists (implements \ArrayAccess).
*
* @param int|string $name The child name
*/
public function offsetExists(mixed $name): bool
{
return isset($this->children[$name]);
}
/**
* Implements \ArrayAccess.
*
* @throws BadMethodCallException always as setting a child by name is not allowed
*/
public function offsetSet(mixed $name, mixed $value): void
{
throw new BadMethodCallException('Not supported.');
}
/**
* Removes a child (implements \ArrayAccess).
*
* @param int|string $name The child name
*/
public function offsetUnset(mixed $name): void
{
unset($this->children[$name]);
}
/**
* Returns an iterator to iterate over children (implements \IteratorAggregate).
*
* @return \ArrayIterator<int|string, FormView>
*/
public function getIterator(): \ArrayIterator
{
return new \ArrayIterator($this->children);
}
public function count(): int
{
return \count($this->children);
}
}