Fem: Implement basic python filter functionality and glyph example

src/Mod/Fem/Gui/ViewProviderFemPostObject.h

@@ -114,20 +114,8 @@ public:
     bool canDelete(App::DocumentObject* obj) const override;
     virtual void onSelectionChanged(const Gui::SelectionChanges& sel);
 
-    /** @name Selection handling
-     * This group of methods do the selection handling.
-     * Here you can define how the selection for your ViewProvider
-     * works.
-     */
-    //@{
-    //     /// indicates if the ViewProvider use the new Selection model
-    //     virtual bool useNewSelectionModel(void) const {return true;}
-    //     /// return a hit element to the selection path or 0
-    //     virtual std::string getElement(const SoDetail*) const;
-    //     virtual SoDetail* getDetail(const char*) const;
-    //     /// return the highlight lines for a given element or the whole shape
-    //     virtual std::vector<Base::Vector3d> getSelectionShape(const char* Element) const;
-    //     //@}
+    // setting up task dialogs
+    virtual void setupTaskDialog(TaskDlgPost* dlg);
 
 protected:
     void handleChangedPropertyName(Base::XMLReader& reader,