/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2015-     Statoil ASA
//  Copyright (C) 2015-     Ceetron Solutions AS
// 
//  ResInsight 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 3 of the License, or
//  (at your option) any later version.
// 
//  ResInsight 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 General Public License at <http://www.gnu.org/licenses/gpl.html> 
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#pragma once

#include "cvfStructGrid.h"
#include "cafPdmPointer.h"

#include <QObject>
#include <QPointer>

class RicDefaultPickEventHandler;
class RicPickEventHandler;
class RimEclipseView;
class RimGeoMechView;
class RimIntersection;
class Rim3dView;
class RiuViewer;
class RivIntersectionBoxSourceInfo;
class RivIntersectionSourceInfo;
class RiuPickItemInfo;

class QMouseEvent;

namespace caf {
    class PdmObject;
}

namespace cvf {
    class HitItemCollection;
    class Part;
}

class RiuViewerCommands: public QObject
{
    Q_OBJECT

public:
    explicit RiuViewerCommands(RiuViewer* ownerViewer);
    ~RiuViewerCommands() override;

    void            setOwnerView(Rim3dView * owner);

    void            displayContextMenu(QMouseEvent* event);
    void            handlePickAction(int winPosX, int winPosY, Qt::KeyboardModifiers keyboardModifiers);

    static void     setPickEventHandler(RicPickEventHandler* pickEventHandler);
    static void     removePickEventHandlerIfActive(RicPickEventHandler* pickEventHandler);

    cvf::Vec3d      lastPickPositionInDomainCoords() const;
private:
    void            findCellAndGridIndex(const RivIntersectionSourceInfo* crossSectionSourceInfo, cvf::uint firstPartTriangleIndex, size_t* cellIndex, size_t* gridIndex);
    void            findCellAndGridIndex(const RivIntersectionBoxSourceInfo* intersectionBoxSourceInfo, cvf::uint firstPartTriangleIndex, size_t* cellIndex, size_t* gridIndex);

    void            ijkFromCellIndex(size_t gridIdx, size_t cellIndex, size_t* i, size_t* j, size_t* k);

    void            findFirstItems(const std::vector<RiuPickItemInfo> & pickItemInfos, 
                                   size_t* indexToFirstNoneNncItem,
                                   size_t* indexToNncItemNearFirsItem);

    bool            handleOverlayItemPicking(int winPosX, int winPosY);

    static void     addDefaultPickEventHandler(RicDefaultPickEventHandler* pickEventHandler);
    static void     removeDefaultPickEventHandler(RicDefaultPickEventHandler* pickEventHandler);

private:
    size_t                                m_currentGridIdx;
    size_t                                m_currentCellIndex;
    cvf::StructGridInterface::FaceType    m_currentFaceIndex;
    cvf::Vec3d                            m_currentPickPositionInDomainCoords;
    caf::PdmPointer<Rim3dView>            m_reservoirView;
    QPointer<RiuViewer>                   m_viewer;

    static RicPickEventHandler*                         sm_overridingPickHandler;
    static std::vector<RicDefaultPickEventHandler*>     sm_defaultPickEventHandlers;
};