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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef SD_ASYNCHRONOUS_TASK_HXX
+#define SD_ASYNCHRONOUS_TASK_HXX
+
+namespace sd { namespace tools {
+
+/** Interface for the asynchronous execution of a task.  This interface
+    allows an controller to run the task either timer based with a fixed
+    amount of time between the steps or thread based one step right after
+    the other.
+*/
+class AsynchronousTask
+{
+public:
+    /** Run the next step of the task.  After HasNextStep() returns false
+        this method should ignore further calls.
+    */
+    virtual void RunNextStep (void) = 0;
+
+    /** Return <TRUE/> when there is at least one more step to execute.
+        When the task has been executed completely then <FALSE/> is
+        returned.
+    */
+    virtual bool HasNextStep (void) = 0;
+};
+
+} } // end of namespace ::sd::tools
+
+#endif