[TASK] Remove ext:dbal from installation steps
[Packages/TYPO3.CMS.git] / typo3 / sysext / fluid / Classes / ViewHelpers / Be / AbstractBackendViewHelper.php
1 <?php
2 namespace TYPO3\CMS\Fluid\ViewHelpers\Be;
3
4 /*
5 * This file is part of the TYPO3 CMS project.
6 *
7 * It is free software; you can redistribute it and/or modify it under
8 * the terms of the GNU General Public License, either version 2
9 * of the License, or any later version.
10 *
11 * For the full copyright and license information, please read the
12 * LICENSE.txt file that was distributed with this source code.
13 *
14 * The TYPO3 project - inspiring people to share!
15 */
16
17 use TYPO3\CMS\Backend\Template\DocumentTemplate;
18 use TYPO3\CMS\Core\Page\PageRenderer;
19 use TYPO3\CMS\Core\Utility\GeneralUtility;
20 use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
21
22 /**
23 * The abstract base class for all backend view helpers
24 * Note: backend view helpers are still experimental!
25 */
26 abstract class AbstractBackendViewHelper extends AbstractViewHelper
27 {
28 /**
29 * Gets instance of template if exists or create a new one.
30 * Saves instance in viewHelperVariableContainer
31 *
32 * @return DocumentTemplate $doc
33 */
34 public function getDocInstance()
35 {
36 if ($this->viewHelperVariableContainer->exists(AbstractBackendViewHelper::class, 'DocumentTemplate')) {
37 $doc = $this->viewHelperVariableContainer->get(AbstractBackendViewHelper::class, 'DocumentTemplate');
38 } else {
39 /** @var $doc DocumentTemplate */
40 $doc = GeneralUtility::makeInstance(DocumentTemplate::class);
41 $this->viewHelperVariableContainer->add(AbstractBackendViewHelper::class, 'DocumentTemplate', $doc);
42 }
43
44 return $doc;
45 }
46
47 /**
48 * Gets instance of PageRenderer if exists or create a new one.
49 * Saves instance in viewHelperVariableContainer
50 *
51 * @return PageRenderer
52 */
53 public function getPageRenderer()
54 {
55 if ($this->viewHelperVariableContainer->exists(AbstractBackendViewHelper::class, 'PageRenderer')) {
56 $pageRenderer = $this->viewHelperVariableContainer->get(AbstractBackendViewHelper::class, 'PageRenderer');
57 } else {
58 /** @var $doc DocumentTemplate */
59 $pageRenderer = GeneralUtility::makeInstance(PageRenderer::class);
60 $this->viewHelperVariableContainer->add(AbstractBackendViewHelper::class, 'PageRenderer', $pageRenderer);
61 }
62
63 return $pageRenderer;
64 }
65 }