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<?php |
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/* |
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* Copyright (C) 2018 |
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* Nathan Boiron <[email protected]> |
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* Romain Canon <[email protected]> |
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* |
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* This file is part of the TYPO3 NotiZ 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 CuyZ\Notiz\ViewHelpers\Slot; |
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use Closure; |
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use CuyZ\Notiz\View\Slot\SlotContainer; |
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use CuyZ\Notiz\View\Slot\SlotView; |
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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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use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface; |
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/** |
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* Acts like a basic condition view-helper; allows checking if the given slot |
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* has been registered in the view. |
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* |
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* Usage: |
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* |
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* ``` |
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* <nz:slot.has name="MySlot"> |
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* <f:then> |
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* <nz:slot.render name="MySlot" /> |
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* </f:then> |
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* <f:else> |
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* Some default value… |
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* </f:else> |
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* </nz:slot> |
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* ``` |
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* |
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* Shorter notation is supported when else statement is not required: |
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* |
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* ``` |
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* <nz:slot.has name="MySlot"> |
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* <nz:slot.render name="MySlot" /> |
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* </nz:slot> |
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* ``` |
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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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* Unfortunately, the rendering context is not passed to the method |
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* `evaluateCondition`. We need to first save it in the class before the |
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* method is called. |
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* |
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* @var RenderingContextInterface |
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*/ |
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protected static $staticRenderingContext; |
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/** |
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* @inheritdoc |
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*/ |
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public function initializeArguments() |
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{ |
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parent::initializeArguments(); |
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$this->registerArgument('name', 'string', 'Name of the slot.', true); |
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unset($this->argumentDefinitions['condition']); |
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} |
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/** |
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* @param array $arguments |
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* @return bool |
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*/ |
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protected static function evaluateCondition($arguments = null) |
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{ |
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/** @var SlotContainer $slotContainer */ |
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$slotContainer = self::$staticRenderingContext |
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->getViewHelperVariableContainer() |
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->get(SlotView::class, SlotView::SLOT_CONTAINER); |
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return $slotContainer->has($arguments['name']); |
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} |
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/** |
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* @see HasViewHelper::$staticRenderingContext |
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* |
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* @return string |
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*/ |
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public function render() |
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{ |
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self::$staticRenderingContext = $this->renderingContext; |
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return parent::render(); |
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} |
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/** |
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* @see HasViewHelper::$staticRenderingContext |
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* |
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* @inheritdoc |
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*/ |
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public static function renderStatic(array $arguments, Closure $renderChildrenClosure, RenderingContextInterface $renderingContext) |
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{ |
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self::$staticRenderingContext = $renderingContext; |
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return parent::renderStatic($arguments, $renderChildrenClosure, $renderingContext); |
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} |
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} |
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CuyZ /
NotiZ
