0029674: Improvements in Inspector tool

- preferences for dock windows geometry, tree view columns and current view projection;
- ViewControl package for common functionality between plugins;
- processing Location and Orientation for external TopoDS_Shape object
- 'F5' key to update content of each plugin
- visibility column in tree view (used now only in ShapeView)
- properties child item for context (presents tree of current Filters of context)

tools/VInspector/VInspector_ViewModel.hxx

@@ -51,8 +51,8 @@ public:
 
   //! Initialize the model by the given context
   //! \param theContext viewer context
-  Standard_EXPORT const Handle(AIS_InteractiveContext)& GetContext() const;
-
+  Standard_EXPORT Handle(AIS_InteractiveContext) GetContext() const;
+  
   //! Initialize the model by the given context
   //! \param theContext viewer context
   Standard_EXPORT void SetContext (const Handle(AIS_InteractiveContext)& theContext);
@@ -70,29 +70,24 @@ public:
   //! Returns root item by column
   //! \param theColumn an index of the column
   //! \return root item instance
-  Standard_EXPORT virtual TreeModel_ItemBasePtr RootItem (const int theColumn) const Standard_OVERRIDE
+  virtual TreeModel_ItemBasePtr RootItem (const int theColumn) const Standard_OVERRIDE
   { return myRootItems[theColumn]; }
 
-  //! Returns count of columns in the model
-  //! \param theParent an index of the parent item
-  //! \return integer value
-  Standard_EXPORT virtual int columnCount (const QModelIndex& theParent = QModelIndex()) const Standard_OVERRIDE
-  { (void)theParent; return 9; }
-
-  //! Returns the header data for the given role and section in the header with the specified orientation.
-  //! \param theSection the header section. For horizontal headers - column number, for vertical headers - row number.
-  //! \param theOrientation a header orientation
-  //! \param theRole a data role
-  //! \return the header data
-  Standard_EXPORT virtual QVariant headerData (int theSection, Qt::Orientation theOrientation,
-                                               int theRole = Qt::DisplayRole ) const Standard_OVERRIDE;
-
   //! Returns select owners for tree view selected items
   //! \param theSelectionModel a selection model
   //! \param theOwners an output list of owners
   Standard_EXPORT static void GetSelectedOwners (QItemSelectionModel* theSelectionModel,
                                                  NCollection_List<Handle(SelectBasics_EntityOwner)>& theOwners);
 
+  //! Updates tree model
+  Standard_EXPORT void UpdateTreeModel();
+
+protected:
+
+  //! Creates root item
+  //! \param theColumnId index of a column
+  virtual void createRootItem (const int theColumnId) Standard_OVERRIDE;
+
 private:
 
   QMap<int, TreeModel_ItemBasePtr> myRootItems; //!< container of root items, for each column own root item