qgsattributetablefiltermodel.h

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/***************************************************************************
  QgsAttributeTableFilterModel.h - Filter Model for attribute table
  -------------------
         date                 : Feb 2009
         copyright            : Vita Cizek
         email                : weetya (at) gmail.com

 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef QGSATTRIBUTETABLEFILTERMODEL_H
#define QGSATTRIBUTETABLEFILTERMODEL_H

#include <QSortFilterProxyModel>
#include <QModelIndex>

#include "qgsvectorlayer.h" //QgsFeatureIds
#include "qgsattributetablemodel.h"
#include "qgsfeaturemodel.h"

class QgsVectorLayerCache;
class QgsMapCanvas;
class QItemSelectionModel;

class GUI_EXPORT QgsAttributeTableFilterModel: public QSortFilterProxyModel, public QgsFeatureModel
{
    Q_OBJECT

  public:
    enum FilterMode
    {
      ShowAll,
      ShowSelected,
      ShowVisible,
      ShowFilteredList,
      ShowEdited
    };

    QgsAttributeTableFilterModel( QgsMapCanvas* canvas, QgsAttributeTableModel* sourceModel, QObject* parent = NULL );

    void setSourceModel( QgsAttributeTableModel* sourceModel );

    void setSelectedOnTop( bool selectedOnTop );

    bool selectedOnTop();

    virtual void setFilteredFeatures( QgsFeatureIds ids );

    void setFilterMode( FilterMode filterMode );

    inline QgsVectorLayer *layer() const { return masterModel()->layer(); }

    inline QgsVectorLayerCache *layerCache() const { return masterModel()->layerCache(); }

    inline QgsAttributeTableModel *masterModel() const { return mTableModel; }

    QgsFeatureId rowToId( const QModelIndex& row );

    QModelIndex fidToIndex( QgsFeatureId fid );
    QModelIndexList fidToIndexList( QgsFeatureId fid );

    virtual QModelIndex mapToMaster( const QModelIndex &proxyIndex ) const;

    virtual QModelIndex mapFromMaster( const QModelIndex &sourceIndex ) const;

  protected:
    bool filterAcceptsRow( int sourceRow, const QModelIndex &sourceParent ) const;

    void generateListOfVisibleFeatures();

    bool lessThan( const QModelIndex &left, const QModelIndex &right ) const;

    virtual void sort( int column, Qt::SortOrder order = Qt::AscendingOrder );

  public slots:
    void extentsChanged();

  private slots:
    void selectionChanged();

  private:
    QgsFeatureIds mFilteredFeatures;
    QgsMapCanvas* mCanvas;
    FilterMode mFilterMode;
    bool mSelectedOnTop;
    QItemSelectionModel* mMasterSelection;
    QgsAttributeTableModel* mTableModel;
};

#endif