diff -r c305d31642ac -r d187ea93fc4f QTfrontend/util/DataManager.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/QTfrontend/util/DataManager.h	Thu Apr 26 07:22:05 2012 +0200
@@ -0,0 +1,107 @@
+/*
+ * Hedgewars, a free turn based strategy game
+ * Copyright (c) 2006-2007 Igor Ulyanov <iulyanov@gmail.com>
+ * Copyright (c) 2007-2012 Andrey Korotaev <unC0Rr@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+/**
+ * @file
+ * @brief DataManager class definition
+ */
+
+#ifndef HEDGEWARS_DATAMANAGER_H
+#define HEDGEWARS_DATAMANAGER_H
+
+#include <QDir>
+#include <QFile>
+
+#include <QStringList>
+
+class QDir;
+class QFile;
+class QStringList;
+
+/**
+ * @brief Offers access to the data files of hedgewars.
+ *
+ * @see <a href="http://en.wikipedia.org/wiki/Singleton_pattern">singleton pattern</a>
+ *
+ * @author sheepluva
+ * @since 0.9.17
+ */
+class DataManager
+{
+    public:
+        /**
+         * @brief Returns reference to the <i>singleton</i> instance of this class.
+         *
+         * @see <a href="http://en.wikipedia.org/wiki/Singleton_pattern">singleton pattern</a>
+         *
+         * @return reference to the instance.
+         */
+        static DataManager & instance();
+
+        /**
+         * @brief Returns a sorted list of data directory entries.
+         *
+         * @param subDirectory sub-directory to search.
+         * @param filters filters for entry type.
+         * @param nameFilters filters by name patterns.
+         * @return a sorted list of matches in the subDirectory of data directory.
+         */
+        QStringList entryList(const QString & subDirectory,
+                              QDir::Filters filters = QDir::NoFilter,
+                              const QStringList & nameFilters = QStringList("*")
+                             ) const;
+
+        /**
+         * @brief Returns the path for the desires data file.
+         *
+         * Use this method if you want to read an existing data file.
+         *
+         * @param relativeDataFilePath relative path of the data file.
+         * @return real path to the file.
+         */
+        QString findFileForRead(const QString & relativeDataFilePath) const;
+
+
+        /**
+         * @brief Returns the path for the data file that is to be written.
+         *
+         * Use this method if you want to create or write into a data file.
+         *
+         * @param relativeDataFilePath relative path of data file write path.
+         * @return destination of path data file.
+         */
+        QString findFileForWrite(const QString & relativeDataFilePath) const;
+
+
+    private:
+        /**
+         * @brief Class constructor of the <i>singleton</i>.
+         *
+         * Not to be used from outside the class,
+         * use the static {@link DataManager::instance()} instead.
+         *
+         * @see <a href="http://en.wikipedia.org/wiki/Singleton_pattern">singleton pattern</a>
+         */
+        DataManager();
+
+        QDir * defaultData; ///< directory of the installed data
+        QDir * userData;    ///< directory of custom data in the user's directory
+};
+
+#endif // HEDGEWARS_DATAMANAGER_H