wiki-grav/plugins/form/classes/Forms.php

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<?php
namespace Grav\Plugin\Form;
use Grav\Common\Page\Interfaces\PageInterface;
use Grav\Common\Page\Page;
use Grav\Framework\Form\Interfaces\FormFactoryInterface;
use Grav\Framework\Form\Interfaces\FormInterface;
class Forms
{
/** @var array|FormFactoryInterface[] */
private $types;
/** @var FormInterface|null */
private $form;
/**
* Forms constructor.
*/
public function __construct()
{
$this->registerType('form', new FormFactory());
}
/**
* @param string $type
* @param FormFactoryInterface $factory
*/
public function registerType(string $type, FormFactoryInterface $factory): void
{
$this->types[$type] = $factory;
}
/**
* @param string $type
*/
public function unregisterType($type): void
{
unset($this->types[$type]);
}
/**
* @param string $type
* @return bool
*/
public function hasType(string $type): bool
{
return isset($this->types[$type]);
}
/**
* @return array
*/
public function getTypes(): array
{
return array_keys($this->types);
}
/**
* @param PageInterface $page
* @param string|null $name
* @param array|null $form
* @return FormInterface|null
*/
public function createPageForm(PageInterface $page, string $name = null, array $form = null): ?FormInterface
{
if (null === $form) {
[$name, $form] = $this->getPageParameters($page, $name);
}
if (null === $form) {
return null;
}
$type = $form['type'] ?? 'form';
$factory = $this->types[$type] ?? null;
if ($factory) {
if (is_callable([$factory, 'createFormForPage'])) {
return $factory->createFormForPage($page, $name, $form);
}
if ($page instanceof Page) {
// @phpstan-ignore-next-line
return $factory->createPageForm($page, $name, $form);
}
}
return null;
}
/**
* @return FormInterface|null
*/
public function getActiveForm(): ?FormInterface
{
return $this->form;
}
/**
* @param FormInterface $form
* @return void
*/
public function setActiveForm(FormInterface $form): void
{
$this->form = $form;
}
/**
* @param PageInterface $page
* @param string|null $name
* @return array
*/
protected function getPageParameters(PageInterface $page, ?string $name): array
{
$forms = $page->getForms();
if ($name) {
// If form with given name was found, use that.
$form = $forms[$name] ?? null;
} else {
// Otherwise pick up the first form.
$form = reset($forms) ?: null;
$name = (string)key($forms);
}
return [$name, $form];
}
}