FileInfoHook.php

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<?php
namespace TYPO3\CMS\Core\Resource\Hook;

use \TYPO3\CMS\Backend\Utility\BackendUtility;
use \TYPO3\CMS\Core\Resource\ResourceFactory;

class FileInfoHook {

    public function renderFileInfo(array $propertyArray, \TYPO3\CMS\Backend\Form\FormEngine $tceformsObj) {
        $fileRecord = $propertyArray['row'];
        $fileObject = NULL;
        if ($fileRecord['uid'] > 0) {
            $fileObject = ResourceFactory::getInstance()->getFileObject((int)$fileRecord['uid']);

        }
        return $this->renderFileInformationContent($fileObject);
    }

    public function renderFileMetadataInfo(array $propertyArray, \TYPO3\CMS\Backend\Form\FormEngine $tceformsObj) {
        $fileMetadataRecord = $propertyArray['row'];
        $fileObject = NULL;
        if ($fileMetadataRecord['file'] > 0) {
            $fileObject = ResourceFactory::getInstance()->getFileObject((int)$fileMetadataRecord['file']);
        }

        return $this->renderFileInformationContent($fileObject);
    }


    protected function renderFileInformationContent(\TYPO3\CMS\Core\Resource\File $file = NULL) {
        if ($file !== NULL) {
            $processedFile = $file->process(\TYPO3\CMS\Core\Resource\ProcessedFile::CONTEXT_IMAGEPREVIEW, array('width' => 150, 'height' => 150));
            $previewImage = $processedFile->getPublicUrl(TRUE);
            $content = '';
            if ($file->isMissing()) {
                $flashMessage = \TYPO3\CMS\Core\Resource\Utility\BackendUtility::getFlashMessageForMissingFile($file);
                $content .= $flashMessage->render();
            }
            if ($previewImage) {
                $content .= '<img src="' . htmlspecialchars($previewImage) . '" alt="" class="t3-tceforms-sysfile-imagepreview" />';
            }
            $content .= '<strong>' . htmlspecialchars($file->getName()) . '</strong>';
            $content .= '(' . htmlspecialchars(\TYPO3\CMS\Core\Utility\GeneralUtility::formatSize($file->getSize())) . 'bytes)<br />';
            $content .= BackendUtility::getProcessedValue('sys_file', 'type', $file->getType()) . ' (' . $file->getMimeType() . ')<br />';
            $content .= $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_misc.xlf:fileMetaDataLocation', TRUE) . ': ';
            $content .= htmlspecialchars($file->getStorage()->getName()) . ' - ' . htmlspecialchars($file->getIdentifier()) . '<br />';
            $content .= '<br />';
        } else {
            $content = '<h2>' . $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_misc.xlf:fileMetaErrorInvalidRecord', TRUE) . '</h2>';
        }

        return $content;
    }
}