support of loading old projects with shape binder or PartDesign boolean

src/App/PropertyLinks.cpp

@@ -939,8 +939,8 @@ void PropertyLinkSubList::Restore(Base::XMLReader &reader)
         // referenced objects in XML which do not exist anymore in the new
         // document. Thus, we should silently ignore this.
         // Property not in an object!
-        DocumentObject* father = static_cast<DocumentObject*>(getContainer());
-        App::Document* document = father->getDocument();
+        DocumentObject* father = dynamic_cast<DocumentObject*>(getContainer());
+        App::Document* document = father ? father->getDocument() : 0;
         DocumentObject* child = document ? document->getObject(name.c_str()) : 0;
         if (child)
             values.push_back(child);

src/Mod/PartDesign/App/FeatureBoolean.cpp

@@ -149,4 +149,13 @@ void Boolean::onChanged(const App::Property* prop) {
     PartDesign::Feature::onChanged(prop);
 }
 
+void Boolean::handleChangedPropertyName(Base::XMLReader &reader, const char * TypeName, const char *PropName)
+{
+    // The App::PropertyLinkList property was Bodies in the past
+    Base::Type type = Base::Type::fromName(TypeName);
+    if (Group.getClassTypeId() == type && strcmp(PropName, "Bodies") == 0) {
+        Group.Restore(reader);
+    }
+}
+
 }

src/Mod/PartDesign/App/FeatureBoolean.h

@@ -58,6 +58,9 @@ public:
     virtual void onChanged(const App::Property* prop);
     //@}
 
+protected:
+    void handleChangedPropertyName(Base::XMLReader &reader, const char * TypeName, const char *PropName);
+
 private:
     static const char* TypeEnums[];
 

src/Mod/PartDesign/App/ShapeBinder.cpp

@@ -149,3 +149,11 @@ Part::TopoShape ShapeBinder::buildShapeFromReferences( Part::Feature* obj, std::
     }
     return base;
 }
+
+void ShapeBinder::handleChangedPropertyType(Base::XMLReader &reader, const char *TypeName, App::Property *prop)
+{
+    // The type of Support was App::PropertyLinkSubList in the past
+    if (prop == &Support && strcmp(TypeName, "App::PropertyLinkSubList") == 0) {
+        Support.Restore(reader);
+    }
+}

src/Mod/PartDesign/App/ShapeBinder.h

@@ -57,6 +57,7 @@ public:
     }
 
 protected:
+    virtual void handleChangedPropertyType(Base::XMLReader &reader, const char * TypeName, App::Property * prop);
     virtual short int mustExecute(void) const;
     virtual App::DocumentObjectExecReturn* execute(void);
 };