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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Form\Widget; |
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use Yiisoft\Arrays\ArrayHelper; |
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use Yiisoft\Form\Helper\HtmlForm; |
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use Yiisoft\Html\Tag\Label as LabelTag; |
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/** |
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* Generates a label tag for the given form attribute. |
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* |
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* @link https://www.w3.org/TR/2012/WD-html-markup-20120329/label.html |
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* |
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* @psalm-suppress MissingConstructor |
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*/ |
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final class Label extends AbstractWidget |
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{ |
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private ?string $label = ''; |
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/** |
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* The id of a labelable form-related element in the same document as the tag label element. |
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* |
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* The first element in the document with an id matching the value of the for attribute is the labeled control for |
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* this label element, if it is a labelable element. |
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* |
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* @param string|null $value The id of a labelable form-related element in the same document as the tag label |
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* element. If null, the attribute will be removed. |
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* |
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* @return static |
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* |
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* @link https://www.w3.org/TR/2012/WD-html-markup-20120329/label.html#label.attrs.for |
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*/ |
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public function forId(?string $value): self |
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{ |
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$new = clone $this; |
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$new->attributes['for'] = $value; |
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return $new; |
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} |
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/** |
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* This specifies the label to be displayed. |
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* |
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* @param string|null $value The label to be displayed. |
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* |
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* @return static |
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* |
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* Note that this will NOT be encoded. |
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* - If this is not set, {@see \Yiisoft\Form\FormModel::getAttributeLabel() will be called to get the label for |
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* display (after encoding). |
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*/ |
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public function label(?string $value): self |
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{ |
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$new = clone $this; |
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$new->label = $value; |
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return $new; |
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} |
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/** |
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* @return string the generated label tag. |
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*/ |
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protected function run(): string |
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{ |
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$new = clone $this; |
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if ($new->label === '') { |
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$new->label = HtmlForm::getAttributeLabel($new->getFormModel(), $new->getAttribute()); |
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} |
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/** @var string */ |
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$forId = ArrayHelper::remove( |
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$new->attributes, |
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'for', |
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HtmlForm::getInputId($new->getFormModel(), $new->getAttribute()) |
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); |
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return $new->label !== null |
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? LabelTag::tag() |
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->attributes($new->attributes) |
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->content($new->label) |
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->encode($new->getEncode()) |
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->forId($forId) |
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->render() |
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: ''; |
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} |
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} |
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