fixes 0003986: Changing view attributes does not trigger 'File changed' status

src/Gui/Document.cpp

@@ -471,6 +471,7 @@ void Document::slotNewObject(const App::DocumentObject& Obj)
 
         // adding to the tree
         signalNewObject(*pcProvider);
+        pcProvider->pcDocument = this;
 
         // it is possible that a new viewprovider already claims children
         handleChildren3D(pcProvider);

src/Gui/Document.h

@@ -98,7 +98,7 @@ public:
     /** signal on changed Object, the 2nd argument is the changed property
         of the referenced document object, not of the view provider */
     mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&,
-                                const App::Property&)>                   signalChangedObject;
+                                          const App::Property&)>                   signalChangedObject;
     /// signal on renamed Object
     mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&)> signalRelabelObject;
     /// signal on activated Object

src/Gui/ViewProviderDocumentObject.cpp

@@ -56,6 +56,7 @@ PROPERTY_SOURCE(Gui::ViewProviderDocumentObject, Gui::ViewProvider)
 
 ViewProviderDocumentObject::ViewProviderDocumentObject()
   : pcObject(0)
+  , pcDocument(0)
 {
     ADD_PROPERTY(DisplayMode,((long)0));
     ADD_PROPERTY(Visibility,(true));
@@ -130,6 +131,9 @@ void ViewProviderDocumentObject::onChanged(const App::Property* prop)
         }
     }
 
+    if (pcDocument)
+        pcDocument->setModified(true);
+
     ViewProvider::onChanged(prop);
 }
 

src/Gui/ViewProviderDocumentObject.h

@@ -135,10 +135,13 @@ protected:
 
 protected:
     App::DocumentObject *pcObject;
+    Gui::Document* pcDocument;
 
 private:
     std::vector<const char*> aDisplayEnumsArray;
     std::vector<std::string> aDisplayModesArray;
+
+    friend class Document;
 };