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/DFBrowser/DFBrowser_SearchView.hxx

@@ -0,0 +1,86 @@
+// 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 DFBrowser_SearchView_H
+#define DFBrowser_SearchView_H
+
+#include <DFBrowser_SearchLine.hxx>
+#include <Standard.hxx>
+#include <TreeModel_ItemBase.hxx>
+
+#include <QItemSelection>
+#include <QObject>
+
+class DFBrowser_SearchLine;
+class QTableView;
+class QWidget;
+
+//! \class DFBrowser_SearchView
+//! Container of search result. It has a table of values
+class DFBrowser_SearchView : public QObject
+{
+  Q_OBJECT
+public:
+
+  //! Constructor
+  Standard_EXPORT DFBrowser_SearchView (QWidget* theParent);
+
+  //! Destructor
+  virtual ~DFBrowser_SearchView() Standard_OVERRIDE {}
+
+  //! Returns search parent control
+  QWidget* GetControl() const { return myMainWindow; }
+
+  //! Sets search line to connect to the search line completion model
+  void SetSearchLine (DFBrowser_SearchLine* theSearchLine) { mySearchLine = theSearchLine; }
+
+  //! Fills the table by values of search line completion model. The zero column of the table is hidden,
+  //! so it visualizes values of 1st and 2nd columns of this model. It creates selection model and connects
+  //! to selectionChanged and doubleClicked signals
+  Standard_EXPORT void InitModels();
+
+  //! Resets search line
+  void Reset() { mySearchLine->SetText (""); }
+
+signals:
+
+  //! Signal about selecting of an item in the view.
+  //! \param thePath path to the selected item (e.g. 0, 0:1, 0:1:1)
+  //! \param theValue value of the selected item (e.g. TDataStd_Name)
+  void pathSelected (const QStringList& thePath, const QString& theValue);
+
+  //! Signal about double click on an item in the view.
+  //! \param thePath path to the selected item (e.g. 0, 0:1, 0:1:1)
+  //! \param theValue value of the selected item (e.g. TDataStd_Name)
+  void pathDoubleClicked (const QStringList& thePath, const QString& theValue);
+
+protected slots:
+
+  //! Listens selection change and emits the pathSelected signal
+  //! \param theSelected selected items
+  //! \param theDeselected deselected items
+  void onTableSelectionChanged (const QItemSelection& theSelected, const QItemSelection& theDeselected);
+
+  //! Listens double click signal on table view
+  //! \theIndex a model index of double clicked item
+  void onTableDoubleClicked (const QModelIndex& theIndex);
+
+private:
+
+  QWidget* myMainWindow; //!< control where table view is placed
+  QTableView* myTableView; //!< table view to visualize search values
+  DFBrowser_SearchLine* mySearchLine; //!< search line to have access to search model completor
+};
+#endif