From 091645866d22aa788edf955a8b5ae861aeb1cdb3 Mon Sep 17 00:00:00 2001
From: nds <natalia.donis@opencascade.com>
Date: Tue, 6 May 2014 12:08:21 +0400
Subject: [PATCH] refs #30 - Sketch base GUI: create, draw lines

Set empty selected feature to edit line operation in order to it is aborted by this.
---
 src/PartSet/PartSet_Module.cpp          | 6 +++---
 src/PartSet/PartSet_OperationSketch.cpp | 3 +++
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/PartSet/PartSet_Module.cpp b/src/PartSet/PartSet_Module.cpp
index 39af2f3d5..6bfffa8ce 100644
--- a/src/PartSet/PartSet_Module.cpp
+++ b/src/PartSet/PartSet_Module.cpp
@@ -133,11 +133,11 @@ void PartSet_Module::onSelectionChanged()
 
       XGUI_Displayer* aDisplayer = myWorkshop->displayer();
       boost::shared_ptr<ModelAPI_Feature> aFeature;
+      // only first selected shape is processed
       if (!aList.IsEmpty()) {
-        const TopoDS_Shape& aShape = aList.First();
-        aFeature = aDisplayer->GetFeature(aShape);
-        aPreviewOp->setSelected(aFeature, aShape);
+        aFeature = aDisplayer->GetFeature(aList.First());
       }
+      aPreviewOp->setSelected(aFeature, !aList.IsEmpty() ? aList.First() : TopoDS_Shape());
     }
   }
 }
diff --git a/src/PartSet/PartSet_OperationSketch.cpp b/src/PartSet/PartSet_OperationSketch.cpp
index 5bd17a0f9..8f2b4ae09 100644
--- a/src/PartSet/PartSet_OperationSketch.cpp
+++ b/src/PartSet/PartSet_OperationSketch.cpp
@@ -41,6 +41,9 @@ std::list<int> PartSet_OperationSketch::getSelectionModes(boost::shared_ptr<Mode
 void PartSet_OperationSketch::setSelected(boost::shared_ptr<ModelAPI_Feature> theFeature,
                                           const TopoDS_Shape& theShape)
 {
+  if (theShape.IsNull())
+    return;
+
   if (!myIsEditMode) {
     setSketchPlane(theShape);
     myIsEditMode = true;
-- 
2.39.2