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<?php |
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/* |
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* 2017 Romain CANON <[email protected]> |
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* |
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* This file is part of the TYPO3 FormZ project. |
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* It is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License, either |
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* version 3 of the License, or any later version. |
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* |
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* For the full copyright and license information, see: |
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* http://www.gnu.org/licenses/gpl-3.0.html |
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*/ |
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namespace Romm\Formz\ViewHelpers\Slot; |
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use Romm\Formz\Core\Core; |
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use Romm\Formz\Exceptions\ContextNotFoundException; |
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use Romm\Formz\Service\ViewHelper\Field\FieldViewHelperService; |
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use Romm\Formz\Service\ViewHelper\Slot\SlotViewHelperService; |
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use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractConditionViewHelper; |
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use TYPO3\CMS\Fluid\Core\ViewHelper\Facets\CompilableInterface; |
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/** |
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* Will check if a given slot has been defined. |
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* |
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* @see \Romm\Formz\ViewHelpers\SlotViewHelper |
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*/ |
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class HasViewHelper extends AbstractConditionViewHelper implements CompilableInterface |
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{ |
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/** |
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* @inheritdoc |
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*/ |
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public function initializeArguments() |
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{ |
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parent::initializeArguments(); |
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$this->registerArgument('slot', 'string', 'Name of the slot.', true); |
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} |
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/** |
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* @return string |
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*/ |
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public function render() |
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{ |
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if (static::evaluateCondition($this->arguments)) { |
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return $this->renderThenChild(); |
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} |
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return $this->renderElseChild(); |
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} |
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/** |
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* @param array $arguments |
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* @return bool |
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* @throws ContextNotFoundException |
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*/ |
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protected static function evaluateCondition($arguments = null) |
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{ |
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/** @var FieldViewHelperService $fieldService */ |
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$fieldService = Core::instantiate(FieldViewHelperService::class); |
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if (false === $fieldService->fieldContextExists()) { |
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throw ContextNotFoundException::slotHasViewHelperFieldContextNotFound(); |
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} |
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/** @var SlotViewHelperService $slotService */ |
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$slotService = Core::instantiate(SlotViewHelperService::class); |
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$slotName = $arguments['slot']; |
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return $slotService->hasSlot($slotName); |
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} |
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} |
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romm /
formz
