YiDataModelIndex.h

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// © You i Labs Inc. 2000-2017. All rights reserved.
#ifndef _YI_DATA_MODEL_INDEX_H_
#define _YI_DATA_MODEL_INDEX_H_

#include "framework/YiPredef.h"

class CYIAbstractDataModel;
class CYIDataModelItem;

class CYIDataModelIndex
{
    friend class CYIAbstractDataModel;
    friend class CYIAbstractDataModelPriv;

public:
    virtual ~CYIDataModelIndex();

    CYIDataModelIndex GetChild(int32_t nRow, int32_t nColumn) const;

    CYIDataModelIndex GetParent() const;

    int32_t GetColumn() const;

    int32_t GetRow() const;

    CYIAbstractDataModel *GetModel() const;

    bool IsValid() const;

    virtual CYIDataModelIndex &operator=(const CYIDataModelIndex &other);
    virtual bool operator!=(const CYIDataModelIndex &other) const;
    virtual bool operator==(const CYIDataModelIndex &other) const;

protected:
    void SetRow(int32_t nRow);
    void SetColumn(int32_t nColumn);
    void SetDataModel(CYIAbstractDataModel *pModel);
    void SetDataItem(CYIDataModelItem *pItem);

private:
    CYIDataModelIndex();
    CYIDataModelIndex(int32_t nRow, int32_t nColumn, const CYIAbstractDataModel *pModel, const CYIDataModelItem *pItem);

    CYIDataModelItem *GetItem() const;

    int32_t m_nRow;
    int32_t m_nColumn;

    CYIAbstractDataModel *m_pDataModel;
    CYIDataModelItem *m_pParentItem;
};

#endif /* _YI_DATA_MODEL_INDEX_H_ */