72 lines
1.9 KiB
PHP
72 lines
1.9 KiB
PHP
<?php
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namespace FluidTYPO3\Vhs\ViewHelpers\Once;
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/*
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* This file is part of the FluidTYPO3/Vhs project under GPLv2 or later.
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*
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* For the full copyright and license information, please read the
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* LICENSE.md file that was distributed with this source code.
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*/
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/**
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* Once: Instance
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*
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* Displays nested content or "then" child once per instance
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* of the content element or plugin being rendered, as identified
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* by the contentObject UID (or globally if no contentObject
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* is associated).
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*
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* "Once"-style ViewHelpers are purposed to only display their
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* nested content once per XYZ, where the XYZ depends on the
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* specific type of ViewHelper (session, cookie etc).
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*
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* In addition the ViewHelper is a ConditionViewHelper, which
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* means you can utilize the f:then and f:else child nodes as
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* well as the "then" and "else" arguments.
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*
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* @author Claus Due <claus@namelesscoder.net>
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* @package Vhs
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* @subpackage ViewHelpers\Once
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*/
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class InstanceViewHelper extends AbstractOnceViewHelper {
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/**
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* @return string
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*/
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protected function getIdentifier() {
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if (TRUE === isset($this->arguments['identifier']) && NULL !== $this->arguments['identifier']) {
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return $this->arguments['identifier'];
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}
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$request = $this->controllerContext->getRequest();
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$identifier = implode('_', array(
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$request->getControllerActionName(),
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$request->getControllerName(),
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$request->getPluginName(),
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$request->getControllerExtensionName()
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));
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return $identifier;
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}
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/**
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* @return void
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*/
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protected function storeIdentifier() {
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$index = get_class($this);
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$identifier = $this->getIdentifier();
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if (FALSE === is_array($GLOBALS[$index])) {
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$GLOBALS[$index] = array();
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}
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$GLOBALS[$index][$identifier] = TRUE;
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}
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/**
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* @return boolean
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*/
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protected function assertShouldSkip() {
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$index = get_class($this);
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$identifier = $this->getIdentifier();
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return isset($GLOBALS[$index][$identifier]);
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}
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}
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