//=========================================================================
//  Copyright (c) Kitware, Inc.
//  All rights reserved.
//  See LICENSE.txt for details.
//
//  This software is distributed WITHOUT ANY WARRANTY; without even
//  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
//  PURPOSE.  See the above copyright notice for more information.
//=========================================================================
// .NAME qtReferencesWidget - the Attribute References Widget
// .SECTION Description
// .SECTION See Also
// qtSection

#ifndef __smtk_extension_qtReferencesWidget_h
#define __smtk_extension_qtReferencesWidget_h

#include "smtk/PublicPointerDefs.h"
#include "smtk/extension/qt/Exports.h"
#include <QWidget>

class qtReferencesWidgetInternals;
class QListWidgetItem;
class QListWidget;
class Model;

namespace smtk
{
namespace attribute
{
class SMTKQTEXT_EXPORT qtReferencesWidget : public QWidget
{
  Q_OBJECT

public:
  qtReferencesWidget(QWidget* p);
  virtual ~qtReferencesWidget();

public slots:
  virtual void showAttributeReferences(smtk::attribute::AttributePtr att, QString& category);
  void onCurrentListSelectionChanged(QListWidgetItem*, QListWidgetItem*);
  void onAvailableListSelectionChanged(QListWidgetItem*, QListWidgetItem*);

protected slots:
  virtual void onRemoveAssigned();
  virtual void onAddAvailable();
  virtual void onExchange();

protected:
  virtual void initWidget();
  QListWidgetItem* getSelectedItem(QListWidget* theLis);
  smtk::attribute::AttributePtr getSelectedAttribute(QListWidget* theLis);
  smtk::attribute::AttributePtr getAttributeFromItem(QListWidgetItem* item);
  virtual QListWidgetItem* addAttributeRefListItem(
    QListWidget* theList, smtk::attribute::ItemPtr refItem);

private:
  qtReferencesWidgetInternals* Internals;

}; // class
}; // namespace attribute
}; // namespace smtk

#endif
