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_ItemFolderObject.cxx

@@ -0,0 +1,93 @@
+// 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. 
+
+#include <inspector/VInspector_ItemFolderObject.hxx>
+
+#include <inspector/VInspector_ItemContext.hxx>
+#include <inspector/VInspector_ItemSelectMgrFilter.hxx>
+
+// =======================================================================
+// function : initValue
+// purpose :
+// =======================================================================
+QVariant VInspector_ItemFolderObject::initValue (int theItemRole) const
+{
+  if (Column() == 0 && (theItemRole == Qt::DisplayRole || theItemRole == Qt::ToolTipRole))
+  {
+    if (parentItemIsContext()) return "Properties";
+    else if (Row() == 0) return "Filters";
+    else return QVariant();
+  }
+  return QVariant();
+}
+
+// =======================================================================
+// function : initRowCount
+// purpose :
+// =======================================================================
+int VInspector_ItemFolderObject::initRowCount() const
+{
+  return parentItemIsContext() ? 1 : (GetContext().IsNull() ? 0 : GetContext()->Filters().Extent());
+}
+
+// =======================================================================
+// function : createChild
+// purpose :
+// =======================================================================
+TreeModel_ItemBasePtr VInspector_ItemFolderObject::createChild (int theRow, int theColumn)
+{
+  if (parentItemIsContext())
+    return VInspector_ItemFolderObject::CreateItem (currentItem(), theRow, theColumn);
+  else
+    return VInspector_ItemSelectMgrFilter::CreateItem (currentItem(), theRow, theColumn);
+}
+
+// =======================================================================
+// function : Init
+// purpose :
+// =======================================================================
+void VInspector_ItemFolderObject::Init()
+{
+  TreeModel_ItemBase::Init(); // to use getIO() without circling initialization
+}
+
+// =======================================================================
+// function : Reset
+// purpose :
+// =======================================================================
+void VInspector_ItemFolderObject::Reset()
+{
+  VInspector_ItemBase::Reset();
+}
+
+// =======================================================================
+// function : initItem
+// purpose :
+// =======================================================================
+void VInspector_ItemFolderObject::initItem() const
+{
+  if (IsInitialized())
+    return;
+  const_cast<VInspector_ItemFolderObject*> (this)->Init();
+}
+
+// =======================================================================
+// function : parentItemIsContext
+// purpose :
+// =======================================================================
+bool VInspector_ItemFolderObject::parentItemIsContext() const
+{
+  return itemDynamicCast<VInspector_ItemContext> (Parent());
+}