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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Form\Field\Part; |
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use InvalidArgumentException; |
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use Stringable; |
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use Yiisoft\Form\Field\Base\FormAttributeTrait; |
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use Yiisoft\Html\Html; |
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use Yiisoft\Widget\Widget; |
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/** |
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* Represents hint for a form field. |
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*/ |
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final class Hint extends Widget |
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{ |
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use FormAttributeTrait; |
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/** |
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* @psalm-var non-empty-string |
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*/ |
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private string $tag = 'div'; |
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private array $attributes = []; |
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private string|Stringable|null $content = null; |
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private bool $encode = true; |
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/** |
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* Set the container tag name for the hint. |
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* |
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* @param string $tag Container tag name. |
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*/ |
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public function tag(string $tag): self |
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{ |
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if ($tag === '') { |
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throw new InvalidArgumentException('Tag name cannot be empty.'); |
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} |
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$new = clone $this; |
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$new->tag = $tag; |
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return $new; |
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} |
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public function attributes(array $attributes): self |
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{ |
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$new = clone $this; |
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$new->attributes = $attributes; |
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return $new; |
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} |
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public function addAttributes(array $attributes): self |
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{ |
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$new = clone $this; |
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$new->attributes = array_merge($this->attributes, $attributes); |
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return $new; |
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} |
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/** |
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* Set tag ID. |
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* |
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* @param string|null $id Tag ID. |
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*/ |
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public function id(?string $id): self |
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{ |
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$new = clone $this; |
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$new->attributes['id'] = $id; |
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return $new; |
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} |
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/** |
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* Replace tag CSS classes with a new set of classes. |
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* |
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* @param string|null ...$class One or many CSS classes. |
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*/ |
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public function class(?string ...$class): self |
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{ |
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$new = clone $this; |
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$new->attributes['class'] = array_filter($class, static fn ($c) => $c !== null); |
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return $new; |
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} |
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/** |
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* Add one or more CSS classes to the tag. |
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* |
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* @param string|null ...$class One or many CSS classes. |
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*/ |
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public function addClass(?string ...$class): self |
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{ |
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$new = clone $this; |
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Html::addCssClass( |
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$new->attributes, |
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array_filter($class, static fn ($c) => $c !== null), |
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); |
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return $new; |
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} |
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public function content(string|Stringable|null $content): self |
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{ |
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$new = clone $this; |
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$new->content = $content; |
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return $new; |
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} |
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/** |
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* Whether content should be HTML-encoded. |
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*/ |
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public function encode(bool $value): self |
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{ |
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$new = clone $this; |
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$new->encode = $value; |
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return $new; |
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} |
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public function render(): string |
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{ |
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$content = $this->hasFormModelAndAttribute() |
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? $this->content ?? $this->getFormAttributeHint() |
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: (string) $this->content; |
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return $content === '' |
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? '' |
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: Html::tag($this->tag, $content, $this->attributes) |
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->encode($this->encode) |
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->render(); |
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} |
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} |
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yiisoft /
form
