ForeignKeyItem.h

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/*  Copyright (C) 2008 National Institute For Space Research (INPE) - Brazil.
 
    This file is part of the TerraLib - a Framework for building GIS enabled applications.
 
    TerraLib is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License,
    or (at your option) any later version.
 
    TerraLib is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public License
    along with TerraLib. See COPYING. If not, write to
    TerraLib Team at <terralib-team@terralib.org>.
 */
 
/*!
  \file terralib/qt/widgets/datasource/explorer/ForeignKeyItem.h
 
  \brief A class that represents a foreign key in a TreeModel.
*/
 
#ifndef __TERRALIB_QT_WIDGETS_DATASOURCE_EXPLORER_INTERNAL_FOREIGNKEYITEM_H
#define __TERRALIB_QT_WIDGETS_DATASOURCE_EXPLORER_INTERNAL_FOREIGNKEYITEM_H
 
// TerraLib
#include "AbstractDataSourceTreeItem.h"
 
namespace te
{
  namespace da { class ForeignKey; }
 
  namespace qt
  {
    namespace widgets
    {
      class TEQTWIDGETSEXPORT ForeignKeyItem : public AbstractDataSourceTreeItem
      {
        Q_OBJECT
 
        public:
 
          /*!
            \brief Constructor.
 
            \param fk     The foreign-key to be showned. If it is associated to a dataset the item will not take its ownership, otherwise, it will.
            \param parent The parent item in the tree or NULL if it is a root item.
          */
          ForeignKeyItem(te::da::ForeignKey* fk, AbstractDataSourceTreeItem* parent);
 
          ~ForeignKeyItem();
 
          int columnCount() const;
 
          QVariant data(int column, int role) const;
 
          QMenu* getMenu(QWidget* parent = 0) const;
 
          bool canFetchMore() const;
 
          Qt::ItemFlags flags() const;
 
          void fetchMore();
 
          bool hasChildren() const;
 
          bool setData(const QVariant& value, int role = Qt::EditRole);
 
          te::da::ForeignKey* getForeignKey() const;
 
        private:
 
          te::da::ForeignKey* m_fk;
      }; 
    } // end namespace widgets
  }   // end namespace qt
}     // end namespace te
 
#endif  // __TERRALIB_QT_WIDGETS_DATASOURCE_EXPLORER_INTERNAL_FOREIGNKEYITEM_H