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<?php |
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namespace Lagdo\UiBuilder\Html; |
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use Lagdo\UiBuilder\Component\Base\HtmlComponent; |
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use Lagdo\UiBuilder\Component\Base\HtmlElement; |
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use Lagdo\UiBuilder\Component\Html\Element; |
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use Lagdo\UiBuilder\Component\Virtual\VirtualComponent; |
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use function is_a; |
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use function implode; |
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class Scope |
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{ |
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/** |
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* @var array<Element> |
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*/ |
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protected $elements = []; |
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/** |
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* @var array<Element|HtmlComponent> |
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*/ |
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protected $children = []; |
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/** |
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* The constructor |
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* |
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* @param HtmlComponent $parent |
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*/ |
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public function __construct(protected HtmlComponent $parent) |
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{} |
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/** |
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* Create the corresponding components |
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* |
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* @param mixed $component |
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* |
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* @return void |
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*/ |
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private function expand(mixed $component): void |
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{ |
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if (is_a($component, Element::class) || |
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is_a($component, HtmlComponent::class)) { |
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$this->children[] = $component; |
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return; |
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} |
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if (is_a($component, VirtualComponent::class)) { |
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// Recursively expand the children of the virtual components. |
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foreach ($component->children() as $childElement) { |
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$this->expand($childElement); |
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} |
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} |
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} |
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/** |
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* @param HtmlComponent $component |
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* @param array<Element> $children |
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* |
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* @return HtmlElement |
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*/ |
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private function getElement(HtmlComponent $component, array $children): HtmlElement |
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{ |
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$element = $component->element(); |
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$element->addChildren($children); |
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// Nest the component element into its wrappers elements. |
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foreach ($component->wrappers() as $wrapper) { |
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$wrapper->addChild($element); |
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$element = $wrapper; |
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} |
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return $element; |
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} |
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/** |
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* @param array $arguments The arguments passed to the component |
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* |
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* @return void |
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*/ |
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public function build(array $arguments): void |
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{ |
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foreach ($arguments as $argument) { |
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$this->expand($argument); |
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} |
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foreach ($this->children as $component) { |
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if (is_a($component, Element::class)) { |
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// A children of type Element doesn't need any further processing. |
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$this->elements[] = $component; |
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continue; |
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} |
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// The component is an instance of HtmlComponent. |
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// Allow the component libraries to react to the parent-child relation. |
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$component->expanded($this->parent); |
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$scope = new Scope($component); |
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// Recursively build the component children. |
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$scope->build($component->children()); |
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// Add the child component element to the scope elements. |
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$this->elements[] = $this->getElement($component, $scope->elements); |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function html(): string |
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{ |
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// Merge all the generated elements. |
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return implode('', $this->elements); |
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} |
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} |
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lagdo /
ui-builder
