From 0496df65383cc6bf0ea17dd8f22d08c4201a5d49 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@e8eeb9e2-ec13-0410-a4a9-efa5cf37419d>
Date: Mon, 16 Jan 2012 14:45:48 +0000
Subject: [PATCH] + check if re-mapping causes cyclic dependency

git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5409 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d
---
 src/Mod/Sketcher/Gui/Command.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Mod/Sketcher/Gui/Command.cpp b/src/Mod/Sketcher/Gui/Command.cpp
index eeddfb858..6a5a5061d 100644
--- a/src/Mod/Sketcher/Gui/Command.cpp
+++ b/src/Mod/Sketcher/Gui/Command.cpp
@@ -215,6 +215,15 @@ void CmdSketcherMapSketch::activated(int iMsg)
                 qApp->translate(className(),"You have to select a single face as support for a sketch!"));
             return;
         }
+
+        std::vector<App::DocumentObject*> input = part->getOutList();
+        if (std::find(input.begin(), input.end(), sel[index]) != input.end()) {
+            QMessageBox::warning(Gui::getMainWindow(),
+                qApp->translate(className(),"Cyclic dependency"),
+                qApp->translate(className(),"You cannot choose a support object depending on the selected sketch!"));
+            return;
+        }
+
         // get the selected sub shape (a Face)
         const Part::TopoShape &shape = part->Shape.getValue();
         TopoDS_Shape sh = shape.getSubShape(sub[0].c_str());