0027398: Integrate Qt Browser Widget to Open CASCADE Technology

The following implementation has been made:
- CMake procedure is extended to compile Qt tools. This is optional and is handled by USE_QT_TOOLS option(OFF by default)
- It is possible to build Qt tools using Qt5 or Qt4, it is settled with USE_QT4 option.
- Sample of DFBrowser tool is available in samples/tools/TInspectorEXE. It is build with tools, executable is placed in binaries. To start the sample, use dfbrowser.bat command.
- DFBrowser tool may be started from DRAW

tools/DFBrowserPane/DFBrowserPane_TDataStdExtStringArray.cxx

@@ -0,0 +1,79 @@
+// 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 <DFBrowserPane_TDataStdExtStringArray.hxx>
+#include <DFBrowserPane_Tools.hxx>
+#include <DFBrowserPane_TableView.hxx>
+#include <DFBrowserPane_AttributePaneModel.hxx>
+#include <DFBrowserPane_HelperArray.hxx>
+
+#include <TDataStd_ExtStringArray.hxx>
+
+#include <QVariant>
+#include <QWidget>
+
+// =======================================================================
+// function : CreateWidget
+// purpose :
+// =======================================================================
+QWidget* DFBrowserPane_TDataStdExtStringArray::CreateWidget (QWidget* theParent)
+{
+  QWidget* aMainWidget = new QWidget (theParent);
+  myTableView = new DFBrowserPane_TableView (aMainWidget);
+  myTableView->SetModel (getPaneModel());
+
+  myArrayTableHelper.CreateWidget (aMainWidget, myTableView);
+
+  return aMainWidget;
+}
+
+// =======================================================================
+// function : Init
+// purpose :
+// =======================================================================
+void DFBrowserPane_TDataStdExtStringArray::Init (const Handle(TDF_Attribute)& theAttribute)
+{
+  QList<QVariant> aValues;
+  GetValues (theAttribute, aValues);
+  myArrayTableHelper.Init (aValues);
+}
+
+// =======================================================================
+// function : GetValues
+// purpose :
+// =======================================================================
+void DFBrowserPane_TDataStdExtStringArray::GetValues (const Handle(TDF_Attribute)& theAttribute, QList<QVariant>& theValues)
+{
+  Handle(TDataStd_ExtStringArray) anAttribute = Handle(TDataStd_ExtStringArray)::DownCast (theAttribute);
+  if (anAttribute.IsNull())
+    return;
+  theValues.append (anAttribute->Lower());
+  theValues.append (anAttribute->Upper());
+  for (int aValueId = anAttribute->Lower(); aValueId <= anAttribute->Upper(); aValueId++)
+    theValues.append (DFBrowserPane_Tools::ToString (anAttribute->Value(aValueId)));
+}
+
+// =======================================================================
+// function : GetShortAttributeInfo
+// purpose :
+// =======================================================================
+void DFBrowserPane_TDataStdExtStringArray::GetShortAttributeInfo (const Handle(TDF_Attribute)& theAttribute,
+                                                                 QList<QVariant>& theValues)
+{
+  QList<QVariant> aValues;
+  GetValues (theAttribute, aValues);
+  myArrayTableHelper.Init (aValues);
+  return myArrayTableHelper.GetShortAttributeInfo (theAttribute, theValues);
+}