handle clip views

src/Mod/TechDraw/Gui/ViewProviderViewClip.cpp

@@ -122,6 +122,14 @@ bool ViewProviderViewClip::isShow(void) const
     return Visibility.getValue();
 }
 
+bool ViewProviderViewClip::canDelete(App::DocumentObject *obj) const
+{
+    // deletions of Clip objects don't destroy anything
+    // thus we can pass this action
+    Q_UNUSED(obj)
+    return true;
+}
+
 TechDraw::DrawViewClip* ViewProviderViewClip::getViewObject() const
 {
     return dynamic_cast<TechDraw::DrawViewClip*>(pcObject);

src/Mod/TechDraw/Gui/ViewProviderViewClip.h

@@ -41,7 +41,6 @@ public:
     /// destructor
     virtual ~ViewProviderViewClip();
 
-
     virtual void attach(App::DocumentObject *);
     virtual void setDisplayMode(const char* ModeName);
     virtual bool useNewSelectionModel(void) const {return false;}
@@ -59,8 +58,9 @@ public:
     virtual bool isShow(void) const;
     std::vector<App::DocumentObject*> claimChildren(void) const;
 
+    virtual bool canDelete(App::DocumentObject* obj) const;
+
 };
 } // namespace TechDrawGui
 
-
 #endif // DRAWINGGUI_VIEWPROVIDERCLIP_H