Init: Added new file TaskListener.py

Change-Id: I3b90d34dbe160410f63cd5cb6b40a1736a01c7cb

wizards/com/sun/star/wizards/ui/event/TaskListener.py

+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file incorporates work covered by the following license notice:
+#
+#   Licensed to the Apache Software Foundation (ASF) under one or more
+#   contributor license agreements. See the NOTICE file distributed
+#   with this work for additional information regarding copyright
+#   ownership. The ASF licenses this file to you under the Apache
+#   License, Version 2.0 (the "License"); you may not use this file
+#   except in compliance with the License. You may obtain a copy of
+#   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+#
+from abc import abstractmethod
+from com.sun.star.script import EventListener
+
+class TaskListener(EventListener):
+
+    @abstractmethod
+    def taskStarted(self, te):
+        pass
+
+    @abstractmethod
+    def taskFinished(self, te):
+        pass
+
+    # is called when the status of the task has advanced.
+    # @param te
+    @abstractmethod
+    def taskStatusChanged(self, te):
+        pass
+
+    @abstractmethod
+    def subtaskNameChanged(self, te):
+        pass