AbstractSpriteHandler.php

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<?php
namespace TYPO3\CMS\Backend\Sprite;

use TYPO3\CMS\Backend\Sprite\SpriteManager;
use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
use TYPO3\CMS\Core\Utility\GeneralUtility;

abstract class AbstractSpriteHandler implements \TYPO3\CMS\Backend\Sprite\SpriteIconGeneratorInterface {

    protected $iconNames = array();

    protected $styleSheetData = '';

    protected $cssTcaFile = '';

    public function __construct() {
        // The file name is prefixed with "z" since the concatenator orders files per name
        $this->cssTcaFile = PATH_site . SpriteManager::$tempPath . 'zextensions.css';
        $this->styleSheetData = '/* Auto-Generated via ' . get_class($this) . ' */' . LF;
    }

    protected function loadRegisteredSprites() {
        // Saves which CSS Files are currently "allowed to be in place"
        $allowedCssFilesinTempDir = array(basename($this->cssTcaFile));
        // Process every registeres file
        foreach ((array) $GLOBALS['TBE_STYLES']['spritemanager']['cssFiles'] as $file) {
            $fileName = basename($file);
            // File should be present
            $allowedCssFilesinTempDir[] = $fileName;
            // get-Cache Filename
            $fileStatus = stat(PATH_site . $file);
            $unique = md5($fileName . $fileStatus['mtime'] . $fileStatus['size']);
            $cacheFile = PATH_site . SpriteManager::$tempPath . $fileName . $unique . '.css';
            if (!file_exists($cacheFile)) {
                copy(PATH_site . $file, $cacheFile);
            }
        }
        // Get all .css files in dir
        $cssFilesPresentInTempDir = GeneralUtility::getFilesInDir(PATH_site . SpriteManager::$tempPath, '.css', 0);
        // and delete old ones which are not needed anymore
        $filesToDelete = array_diff($cssFilesPresentInTempDir, $allowedCssFilesinTempDir);
        foreach ($filesToDelete as $file) {
            unlink(PATH_site . SpriteManager::$tempPath . $file);
        }
    }

    public function generate() {
        // Include registered Sprites
        $this->loadRegisteredSprites();
        // Cache results in the CSS file
        GeneralUtility::writeFile($this->cssTcaFile, $this->styleSheetData);
    }

    public function getAvailableIconNames() {
        return $this->iconNames;
    }

    protected function collectTcaSpriteIcons() {
        $tcaTables = array_keys($GLOBALS['TCA']);
        $resultArray = array();
        // Path (relative from typo3 dir) for skin-Images
        if (isset($GLOBALS['TBE_STYLES']['skinImgAutoCfg']['relDir'])) {
            $skinPath = $GLOBALS['TBE_STYLES']['skinImgAutoCfg']['relDir'];
        } else {
            $skinPath = '';
        }
        // check every table in the TCA, if an icon is needed
        foreach ($tcaTables as $tableName) {
            // This method is only needed for TCA tables where
            // typeicon_classes are not configured
            if (is_array($GLOBALS['TCA'][$tableName]) && !is_array($GLOBALS['TCA'][$tableName]['ctrl']['typeicon_classes'])) {
                $tcaCtrl = $GLOBALS['TCA'][$tableName]['ctrl'];
                // Adding the default Icon (without types)
                if (isset($tcaCtrl['iconfile'])) {
                    // In CSS we need a path relative to the css file
                    if (strpos($tcaCtrl['iconfile'], '/') !== FALSE) {
                        if (GeneralUtility::isFirstPartOfStr($tcaCtrl['iconfile'], 'EXT:')) {
                            list($extensionKey, $relativePath) = explode('/', substr($tcaCtrl['iconfile'], 4), 2);
                            $icon = ExtensionManagementUtility::extRelPath($extensionKey) . $relativePath;
                        } else {
                            $icon = $tcaCtrl['iconfile'];
                        }
                    } else {
                        // [TCA][ctrl][iconfile] defines icons without path info to reside in gfx/i/
                        $icon = $skinPath . 'gfx/i/' . $tcaCtrl['iconfile'];
                    }
                    $icon = GeneralUtility::resolveBackPath($icon);
                    $resultArray['tcarecords-' . $tableName . '-default'] = $icon;
                }
                // If records types are available, register them
                if (isset($tcaCtrl['typeicon_column']) && is_array($tcaCtrl['typeicons'])) {
                    foreach ($tcaCtrl['typeicons'] as $type => $icon) {
                        // In CSS we need a path relative to the css file
                        // [TCA][ctrl][iconfile] defines icons without path info to reside in gfx/i/
                        if (strpos($icon, '/') === FALSE) {
                            $icon = $skinPath . 'gfx/i/' . $icon;
                        } elseif (GeneralUtility::isFirstPartOfStr($icon, 'EXT:')) {
                            list($extensionKey, $relativePath) = explode('/', substr($icon, 4), 2);
                            $icon = ExtensionManagementUtility::extRelPath($extensionKey) . $relativePath;
                        }
                        $icon = GeneralUtility::resolveBackPath($icon);
                        $resultArray['tcarecords-' . $tableName . '-' . $type] = $icon;
                    }
                }
            }
        }
        return $resultArray;
    }

}