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<?php declare(strict_types=1); |
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namespace Formularium\Frontend\React; |
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use Formularium\HTMLElement; |
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class Framework extends \Formularium\Framework |
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{ |
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public function __construct(string $name = 'React') |
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{ |
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parent::__construct($name); |
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} |
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/** |
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* Static counter to generate unique ids. |
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* |
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* @return integer |
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*/ |
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public static function counter(): int |
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{ |
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static $counter = 0; |
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return $counter++; |
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} |
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public function htmlHead(HTMLElement &$head) |
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{ |
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$head->prependContent([ |
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HTMLElement::factory('script', ['src' => "https://unpkg.com/react@16/umd/react.development.js", 'crossorigin' => '']), |
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HTMLElement::factory('script', ['src' => "https://unpkg.com/react-dom@16/umd/react-dom.development.js", 'crossorigin' => '']), |
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HTMLElement::factory('script', ['src' => "https://unpkg.com/babel-standalone@6/babel.min.js", 'crossorigin' => '']) |
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]); |
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} |
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public function editableCompose(\Formularium\Model $m, array $elements, string $previousCompose): string |
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{ |
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$data = []; |
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foreach ($m->getFields() as $name => $field) { |
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$data[$name] = $field->getDatatype()->getDefault(); |
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} |
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$editableForm = join('', $elements); |
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$editableForm = str_replace('"{this.handleInputChange}"', '{this.handleInputChange}', $editableForm); |
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$editableForm = preg_replace( |
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'/value="\{this.state.([a-zA-Z0-9_]+)\}"/', |
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'value={this.state.$1}', |
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$editableForm |
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); |
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$jsonData = json_encode($data); |
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$id = 'reactapp' . self::counter(); |
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$component = $m->getName() . 'Component'; |
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$reactCode = <<<EOF |
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'use strict'; |
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const e = React.createElement; |
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class {$component} extends React.Component { |
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constructor(props) { |
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super(props); |
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this.state = $jsonData; |
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this.handleInputChange = this.handleInputChange.bind(this); |
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} |
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handleInputChange(event) { |
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const target = event.target; |
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const value = target.type === 'checkbox' ? target.checked : target.value; |
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const name = target.name; |
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this.setState({ |
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[name]: value |
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}); |
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} |
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render() { |
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return ( |
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<form> |
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$editableForm |
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</form> |
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); |
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} |
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} |
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const domContainer = document.querySelector('#{$id}'); |
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ReactDOM.render(e($component), domContainer); |
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EOF; |
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$t = new HTMLElement('div', ['id' => $id]); |
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$s = new HTMLElement('script', ['type' => "text/babel"], $reactCode, true); |
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return HTMLElement::factory('', [], [$t, $s])->getRenderHTML(); |
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} |
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} |
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Corollarium /
Formularium
