mirror of
https://github.com/Combodo/iTop.git
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87 lines
2.5 KiB
PHP
87 lines
2.5 KiB
PHP
<?php
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/*
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* @copyright Copyright (C) 2010-2025 Combodo SAS
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* @license http://opensource.org/licenses/AGPL-3.0
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*/
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namespace Combodo\iTop\Forms\Block\Expression;
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use Combodo\iTop\Forms\Block\AbstractFormBlock;
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use Combodo\iTop\Forms\IO\Format\BooleanIOFormat;
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use Combodo\iTop\Forms\IO\Format\RawFormat;
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use Combodo\iTop\Forms\Register\IORegister;
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use Combodo\iTop\Forms\FormsException;
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use IssueLog;
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use Symfony\Component\Form\FormEvents;
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use Throwable;
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/**
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*
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*/
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class ExpressionFormBlock extends AbstractFormBlock
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{
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public const EXPRESSION_PATTERN = "/:(?<input>\w+)/";
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// Outputs
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const OUTPUT_RESULT = "result";
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const OUTPUT_RESULT_INVERT = "result_invert";
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/** @inheritdoc */
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protected function RegisterIO(IORegister $oIORegister): void
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{
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parent::RegisterIO($oIORegister);
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$oIORegister->AddOutput(self::OUTPUT_RESULT, BooleanIOFormat::class);
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$oIORegister->AddOutput(self::OUTPUT_RESULT_INVERT, BooleanIOFormat::class);
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}
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/** @inheritdoc */
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public function AllInputsReadyEvent(): void
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{
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parent::AllInputsReadyEvent();
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$this->ComputeExpression(FormEvents::POST_SET_DATA);
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$this->ComputeExpression(FormEvents::POST_SUBMIT);
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}
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/**
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* Compute the expression and set the output values.
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*
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* @param string $sEventType
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*
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* @return void
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*/
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public function ComputeExpression(string $sEventType): void
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{
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try{
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$sExpression = $this->GetOption('expression');
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$sValue = preg_replace_callback(
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self::EXPRESSION_PATTERN,
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function(array $aMatches) use ($sEventType): ?string {
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$oInput = $this->GetInput($aMatches['input']);
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if(!$oInput->HasEventValue($sEventType)){
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throw new FormsException('Unable to compute expression: input '.$aMatches['input'].' has no value for event '.$sEventType.'.');
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}
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$value = $oInput->GetValue($sEventType);
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if (is_string($value)) {
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$value = "'$value'";
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}
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return $value;
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},
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$sExpression);
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$result = '';
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try {
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eval('$result = '.$sValue.';');
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} catch (Throwable $e) {
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IssueLog::Exception(__METHOD__.' expression '.json_encode($sValue).' failed with exception: '.$e->getMessage(), $e);
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}
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$this->GetOutput(self::OUTPUT_RESULT)->SetValue($sEventType, new BooleanIOFormat(boolval($result)));
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$this->GetOutput(self::OUTPUT_RESULT_INVERT)->SetValue($sEventType, new BooleanIOFormat(!boolval($result)));
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$this->GetOutput(self::OUTPUT_VALUE)->SetValue($sEventType, new RawFormat($result));
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}
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catch(\Exception $e){
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IssueLog::Exception('Compute expression block issue', $e);
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}
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}
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} |