AlternativeRoutesModel.h

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//
// This file is part of the Marble Virtual Globe.
//
// This program is free software licensed under the GNU LGPL. You can
// find a copy of this license in LICENSE.txt in the top directory of
// the source code.
//
// Copyright 2010      Dennis Nienhüser <earthwings@gentoo.org>
//

#ifndef MARBLE_ALTERNATIVEROUTESMODEL_H
#define MARBLE_ALTERNATIVEROUTESMODEL_H

#include "GeoDataLineString.h"

#include <QAbstractListModel>

namespace Marble
{

class AlternativeRoutesModelPrivate;
class RouteRequest;
class GeoDataDocument;

class MARBLE_EXPORT AlternativeRoutesModel : public QAbstractListModel
{
    Q_OBJECT

public:
    enum WritePolicy {
        Instant,
        Lazy
    };

    explicit AlternativeRoutesModel( QObject *parent = 0 );

    ~AlternativeRoutesModel();

    // Model querying

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

    QVariant headerData ( int section, Qt::Orientation orientation, int role = Qt::DisplayRole ) const;

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

    GeoDataDocument* route( int index );

    // Model data filling

    void newRequest( RouteRequest *request );

    void addRoute( GeoDataDocument* document, WritePolicy policy = Lazy );

    void clear();

    GeoDataDocument* currentRoute();

    static const GeoDataLineString* waypoints( const GeoDataDocument* document );

    static qreal distance( const GeoDataCoordinates &satellite, const GeoDataCoordinates &lineA, const GeoDataCoordinates &lineB );

    static QVector<qreal> deviation( const GeoDataDocument* routeA, const GeoDataDocument* routeB );

public Q_SLOTS:
    void setCurrentRoute( int index );

Q_SIGNALS:
    void currentRouteChanged( GeoDataDocument* newRoute );
    void currentRouteChanged( int index );

private Q_SLOTS:
    void addRestrainedRoutes();

    void update( GeoDataDocument* route );

private:
    AlternativeRoutesModelPrivate *const d;
};

} // namespace Marble

#endif