1 files changed, 54 insertions, 0 deletions
diff --git a/grc/core/Element.pyi b/grc/core/Element.pyi
new file mode 100644
index 0000000000..c81180a33e
--- /dev/null
+++ b/grc/core/Element.pyi
@@ -0,0 +1,54 @@
+# Copyright 2008, 2009, 2015, 2016 Free Software Foundation, Inc.
+# This file is part of GNU Radio
+#
+# GNU Radio Companion 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; either version 2
+# of the License, or (at your option) any later version.
+#
+# GNU Radio Companion 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+
+from . import Platform, FlowGraph, Block
+
+def lazy_property(func):
+    return func
+
+
+class Element(object):
+
+    def __init__(self, parent=None):
+        ...
+
+    @property
+    def parent(self):
+        ...
+
+    def get_parent_by_type(self, cls):
+        parent = self.parent
+        if parent is None:
+            return None
+        elif isinstance(parent, cls):
+            return parent
+        else:
+            return parent.get_parent_by_type(cls)
+
+    @lazy_property
+    def parent_platform(self): -> Platform.Platform
+        ...
+
+    @lazy_property
+    def parent_flowgraph(self): -> FlowGraph.FlowGraph
+        ...
+
+    @lazy_property
+    def parent_block(self): -> Block.Block
+        ...
+
+