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<?php
namespace ipl\Html\FormDecorator;
use ipl\Html\Attributes;
use ipl\Html\BaseHtmlElement;
use ipl\Html\Contract\FormElement;
use ipl\Html\Contract\FormElementDecorator;
use ipl\Html\Contract\FormSubmitElement;
use ipl\Html\FormElement\HiddenElement;
use ipl\Html\Html;
use ipl\Html\HtmlElement;
use ipl\Html\Text;
/**
* Form element decorator based on div elements
*/
class DivDecorator extends BaseHtmlElement implements FormElementDecorator
{
/** @var string CSS class to use for submit elements */
const SUBMIT_ELEMENT_CLASS = 'form-control';
/** @var string CSS class to use for all input elements */
const INPUT_ELEMENT_CLASS = 'form-element';
/** @var string CSS class to use for form descriptions */
const DESCRIPTION_CLASS = 'form-element-description';
/** @var string CSS class to use for form errors */
const ERROR_CLASS = 'form-element-errors';
/** @var string CSS class to set on the decorator if the element has errors */
const ERROR_HINT_CLASS = 'has-error';
/** @var FormElement The decorated form element */
protected $formElement;
protected $tag = 'div';
public function decorate(FormElement $formElement)
{
if ($formElement instanceof HiddenElement) {
return;
}
$decorator = clone $this;
$decorator->formElement = $formElement;
$classes = [static::INPUT_ELEMENT_CLASS];
if ($formElement instanceof FormSubmitElement) {
$classes[] = static::SUBMIT_ELEMENT_CLASS;
}
$decorator->getAttributes()->add('class', $classes);
$formElement->prependWrapper($decorator);
}
protected function assembleDescription()
{
$description = $this->formElement->getDescription();
if ($description !== null) {
$descriptionId = null;
if ($this->formElement->getAttributes()->has('id')) {
$descriptionId = 'desc_' . $this->formElement->getAttributes()->get('id')->getValue();
$this->formElement->getAttributes()->set('aria-describedby', $descriptionId);
}
return Html::tag('p', ['id' => $descriptionId, 'class' => static::DESCRIPTION_CLASS], $description);
}
return null;
}
protected function assembleElement()
{
if ($this->formElement->isRequired()) {
$this->formElement->getAttributes()->set('aria-required', 'true');
}
return $this->formElement;
}
protected function assembleErrors()
{
$errors = new HtmlElement('ul', Attributes::create(['class' => static::ERROR_CLASS]));
foreach ($this->formElement->getMessages() as $message) {
$errors->addHtml(
new HtmlElement('li', Attributes::create(['class' => static::ERROR_CLASS]), Text::create($message))
);
}
if (! $errors->isEmpty()) {
return $errors;
}
return null;
}
protected function assembleLabel()
{
$label = $this->formElement->getLabel();
if ($label !== null) {
$attributes = null;
if ($this->formElement->getAttributes()->has('id')) {
$attributes = new Attributes(['for' => $this->formElement->getAttributes()->get('id')->getValue()]);
}
return Html::tag('label', $attributes, $label);
}
return null;
}
protected function assemble()
{
if ($this->formElement->hasBeenValidated() && ! $this->formElement->isValid()) {
$this->getAttributes()->add('class', static::ERROR_HINT_CLASS);
}
$this->addHtml(...Html::wantHtmlList([
$this->assembleLabel(),
$this->assembleElement(),
$this->assembleDescription(),
$this->assembleErrors()
]));
}
}
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