QueryBuilderWidget.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/query/QueryBuilderWidget.h
 
  \brief This file has the QueryBuilderWidget class.
*/
 
#ifndef __TERRALIB_QT_WIDGETS_QUERY_INTERNAL_QUERYBUILDERWIDGET_H
#define __TERRALIB_QT_WIDGETS_QUERY_INTERNAL_QUERYBUILDERWIDGET_H
 
// TerraLib
#ifndef Q_MOC_RUN
#include "../../../dataaccess/dataset/DataSetType.h"
#include "../../../dataaccess/datasource/DataSource.h"
#include "../../../dataaccess/query/Expression.h"
#include "../../../dataaccess/query/Where.h"
#include "../Config.h"
#endif
 
// STL
#include <memory>
#include <map>
 
// Qt
#include <QWidget>
#include <QTreeWidgetItem>
 
 
namespace Ui { class QueryBuilderWidgetForm; }
 
namespace te
{
  namespace qt
  {
    namespace widgets
    {
      class QueryBuilderTreeWidget;
      class QueryConnectorWidget;
      class QueryConditionWidget;
 
      /*!
        \class QueryBuilderWidget
 
        \brief This class is used to define the Where Clause object of select operation.
      */
      class TEQTWIDGETSEXPORT QueryBuilderWidget : public QWidget
      {
        Q_OBJECT
 
        public:
 
          QueryBuilderWidget(QWidget* parent = 0, Qt::WindowFlags f = 0);
 
          ~QueryBuilderWidget();
 
          void setInputParameters(te::da::DataSourcePtr dataSource, std::string dataSetName, std::unique_ptr<te::da::DataSetType> dsType);
 
          void startWhereClause();
 
          void setWhereClause(te::da::Where* where);
 
          te::da::Where* getWhereClause();
 
          std::string getWhereString();
 
        protected:
 
          QWidget * createCondition(bool startCondition, QWidget* parent, bool right);
 
          QWidget* createConnector(bool startCondition, QWidget* owner, QWidget* parent, bool autoCreateCondition);
 
          void removeCondition(te::qt::widgets::QueryConditionWidget* condition);
 
          void removeConnector(te::qt::widgets::QueryConnectorWidget* connector);
 
          void rebuildTree(QTreeWidgetItem* item);
 
          void buildTree(te::da::Expression* exp, QWidget* parent, bool right);
 
          bool functionsIsAConnector(te::da::Function* func);
 
          bool functionsIsACondition(te::da::Function* func);
 
          protected slots:
 
          void onAddConnectorClicked(QWidget* owner, QWidget* parent);
 
          void onRemoveConnectorClicked(QWidget* owner, QWidget* parent);
 
          void onChanged();
 
        signals:
 
          void strWhereClause(std::string str);
 
 
        protected:
 
          std::unique_ptr<Ui::QueryBuilderWidgetForm> m_ui;
 
          QueryBuilderTreeWidget* m_treeWidget;
 
          QWidget* m_starterWidget;
 
          te::da::DataSourcePtr m_dataSource;
 
          std::string m_dataSetName;
 
          std::unique_ptr<te::da::DataSetType> m_dsType;
 
          std::map<QTreeWidgetItem*, QWidget*> m_widgetMap;
 
      }; 
 
    } // end namespace widgets
  }   // end namespace qt
}     // end namespace te
 
#endif  // __TERRALIB_QT_WIDGETS_QUERY_INTERNAL_QUERYBUILDERWIDGET_H