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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\AssetHandler\Css; |
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use Romm\Formz\AssetHandler\AbstractAssetHandler; |
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use Romm\Formz\Condition\Parser\ConditionTree; |
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use Romm\Formz\Configuration\Form\Field\Field; |
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/** |
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* This asset handler generates the CSS code which will automatically hide |
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* certain fields of the form, depending on their activation conditions. |
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* |
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* Two steps are important: |
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* - First, the container of the field is hidden, no matter what. |
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* - Then, for each activation condition that can be reached, a CSS selector is |
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* generated, and used to display the container. |
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*/ |
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class FieldsActivationCssAssetHandler extends AbstractAssetHandler |
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{ |
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/** |
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* Main function of this asset handler. |
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* |
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* @return string |
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*/ |
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public function getFieldsActivationCss() |
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{ |
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$cssBlocks = []; |
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$formConfiguration = $this->getFormObject()->getConfiguration(); |
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foreach ($formConfiguration->getFields() as $field) { |
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$formName = $this->getFormObject()->getName(); |
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$fieldContainerSelector = $field->getSettings()->getFieldContainerSelector(); |
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$cssTree = $this->getConditionTreeForField($field)->getCssConditions(); |
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if (false === empty($cssTree)) { |
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$fullNodeData = []; |
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foreach ($cssTree as $node) { |
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$fullNodeData[] = 'form[name="' . $formName . '"]' . $node . ' ' . $fieldContainerSelector; |
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} |
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$nodesSelector = implode(',' . CRLF, $fullNodeData); |
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$cssBlocks[] = $this->getSingleFieldCssBlock($formName, $field, $fieldContainerSelector, $nodesSelector); |
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} |
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} |
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return implode(CRLF, $cssBlocks); |
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} |
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/** |
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* This function is just here to make the class more readable. |
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* |
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* @param string $formName Name of the form. |
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* @param Field $field Field instance. |
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* @param string $fieldContainerSelector Selector for the field container. |
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* @param string $nodesSelector Nodes used to display the field container. |
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* @return string |
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*/ |
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protected function getSingleFieldCssBlock($formName, $field, $fieldContainerSelector, $nodesSelector) |
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{ |
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return <<<CSS |
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/* Hiding the container of the field "{$field->getFieldName()}" by default */ |
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form[name="$formName"] $fieldContainerSelector { |
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display: none; |
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} |
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/* Showing the container of the field "{$field->getFieldName()}" */ |
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$nodesSelector { |
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display: block; |
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} |
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CSS; |
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} |
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/** |
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* @param Field $field |
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* @return ConditionTree |
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*/ |
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protected function getConditionTreeForField(Field $field) |
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{ |
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return $this->conditionProcessor->getActivationConditionTreeForField($field); |
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} |
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} |
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romm /
formz
