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/TreeModel/TreeModel_ContextMenu.hxx

@@ -0,0 +1,53 @@
+// Created on: 2017-06-16
+// Created by: Natalia ERMOLAEVA
+// Copyright (c) 2017 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement. 
+
+#ifndef TreeModel_ContextMenu_H
+#define TreeModel_ContextMenu_H
+
+#include <Standard.hxx>
+#include <Standard_Macro.hxx>
+
+#include <Standard_WarningsDisable.hxx>
+#include <QObject>
+#include <QPoint>
+#include <Standard_WarningsRestore.hxx>
+
+class QTreeView;
+
+//! \class TreeModel_ContextMenu
+//! \brief Creates actions to show/hide tree view columns
+class TreeModel_ContextMenu : public QObject
+{
+  Q_OBJECT
+public:
+  //! Constructor
+  Standard_EXPORT TreeModel_ContextMenu (QTreeView* theTreeView);
+
+  //! Destructor
+  ~TreeModel_ContextMenu() {}
+
+protected slots:
+  //! Shows context menu for tree view header. It contains actions to change columns visibility.
+  //! \param thePosition a clicked point
+  void onTreeViewHeaderContextMenuRequested (const QPoint& thePosition);
+
+  //! Changes clicked column visiblity
+  void onColumnVisibilityChanged();
+
+private:
+  QTreeView* myTreeView;
+};
+
+#endif