facetmodel.h

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/*
   This file is part of the Nepomuk KDE project.
   Copyright (C) 2010 Sebastian Trueg <trueg@kde.org>

   This library 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 2.1 of the License, or (at your option) version 3, or any
   later version accepted by the membership of KDE e.V. (or its
   successor approved by the membership of KDE e.V.), which shall
   act as a proxy defined in Section 6 of version 3 of the license.

   This library 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 this library.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef _NEPOMUK_QUERY_FACET_MODEL_H_
#define _NEPOMUK_QUERY_FACET_MODEL_H_

#include "query.h"
#include "term.h"
#include "nepomukutils_export.h"

#include <QtCore/QAbstractItemModel>
#include <QtCore/QList>

namespace Nepomuk {
    namespace Utils {
        class Facet;

        class NEPOMUKUTILS_EXPORT FacetModel : public QAbstractItemModel
        {
            Q_OBJECT

        public:
            FacetModel( QObject* parent = 0 );

            ~FacetModel();

            enum CustomRoles {
                FacetRole = 235265643
            };

            int columnCount( const QModelIndex& parent = QModelIndex() ) const;

            QVariant data( const QModelIndex& index, int role = Qt::DisplayRole ) const;

            bool setData( const QModelIndex& index, const QVariant& value, int role );

            bool hasChildren(const QModelIndex &parent) const;

            QModelIndex parent( const QModelIndex& index ) const;

            int rowCount( const QModelIndex& parent = QModelIndex() ) const;

            QModelIndex index( int row, int column, const QModelIndex& parent = QModelIndex() ) const;

            Qt::ItemFlags flags( const QModelIndex& index ) const;

            QList<Facet*> facets() const;

            Query::Term queryTerm() const;

        public Q_SLOTS:
            Nepomuk::Query::Query extractFacetsFromQuery( const Nepomuk::Query::Query& query );

            void setClientQuery( const Nepomuk::Query::Query& query );

            void addFacet( Nepomuk::Utils::Facet* facet );

            void setFacets( const QList<Nepomuk::Utils::Facet*>& facets );

            void clearSelection();

            void clear();

        Q_SIGNALS:
            void queryTermChanged( const Nepomuk::Query::Term& term );

        private:
            class Private;
            Private* const d;

            Q_PRIVATE_SLOT( d, void _k_queryTermChanged() )
            Q_PRIVATE_SLOT( d, void _k_facetSelectionChanged( Nepomuk::Utils::Facet* ) )
            Q_PRIVATE_SLOT( d, void _k_facetLayoutChanged( Nepomuk::Utils::Facet* ) )
        };
    }
}

Q_DECLARE_METATYPE( Nepomuk::Utils::Facet* )

#endif