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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\Form;
use Symfony\Component\Form\Exception\BadMethodCallException;
/**
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class FormView implements \ArrayAccess, \IteratorAggregate, \Countable
{
/**
* The variables assigned to this view.
*
* @var array
*/
public $vars = array(
'value' => null,
'attr' => array(),
);
/**
* The parent view.
*
* @var FormView
*/
public $parent;
/**
* The child views.
*
* @var FormView[]
*/
public $children = array();
/**
* 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.
*
* @var bool
*/
private $rendered = false;
public function __construct(FormView $parent = null)
{
$this->parent = $parent;
}
/**
* Returns whether the view was already rendered.
*
* @return bool Whether this view's widget is rendered.
*/
public function isRendered()
{
$hasChildren = 0 < count($this->children);
if (true === $this->rendered || !$hasChildren) {
return $this->rendered;
}
if ($hasChildren) {
foreach ($this->children as $child) {
if (!$child->isRendered()) {
return false;
}
}
return $this->rendered = true;
}
return false;
}
/**
* Marks the view as rendered.
*
* @return FormView The view object.
*/
public function setRendered()
{
$this->rendered = true;
return $this;
}
/**
* Returns a child by name (implements \ArrayAccess).
*
* @param string $name The child name
*
* @return FormView The child view
*/
public function offsetGet($name)
{
return $this->children[$name];
}
/**
* Returns whether the given child exists (implements \ArrayAccess).
*
* @param string $name The child name
*
* @return bool Whether the child view exists
*/
public function offsetExists($name)
{
return isset($this->children[$name]);
}
/**
* Implements \ArrayAccess.
*
* @throws BadMethodCallException always as setting a child by name is not allowed
*/
public function offsetSet($name, $value)
{
throw new BadMethodCallException('Not supported');
}
/**
* Removes a child (implements \ArrayAccess).
*
* @param string $name The child name
*/
public function offsetUnset($name)
{
unset($this->children[$name]);
}
/**
* Returns an iterator to iterate over children (implements \IteratorAggregate).
*
* @return \ArrayIterator|FormView[] The iterator
*/
public function getIterator()
{
return new \ArrayIterator($this->children);
}
/**
* Implements \Countable.
*
* @return int The number of children views
*/
public function count()
{
return count($this->children);
}
}
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