QicsTable: custom_data

/****************************************************************************
** $RCSfile: cdm_h.html,v $ $Date: 2008/06/23 16:32:00 $
**
** Copyright ( C ) 2002-2006 Integrated Computer Solutions, Inc.
** All rights reserved.
**
** This file is part of an example program for QicsTable.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#ifndef _CUSTOM_DATA_MODEL_H
#define _CUSTOM_DATA_MODEL_H

#include <QVector>
#include <QicsDataModel.h>


// This is an example of a custom data model.


// First, here are some existing classes that define stock data.  These are
// supposed to simulate the kinds of classes that a typical programmer might
// already have when s/he decides to use the QicsTable.

// We will be using these classes when we make the custom data model.


// Represents a single stock
class StockPrivate
{
public:
    StockPrivate();
    virtual ~StockPrivate();

    inline QString symbol(void) const
    { return _symbol; }
    inline void setSymbol(QString sym)
    { _symbol = sym; }

    inline float high(void) const
    { return _high; }
    inline void setHigh(float val)
    { _high = val; }

    inline float low(void) const
    { return _low; }
    inline void setLow(float val)
    { _low = val; }

    inline float close(void) const
    { return _close; }
    inline void setClose(float val)
    { _close = val; }

    inline unsigned int volume(void) const
    { return _volume; }
    inline void setVolume(int val)
    { _volume = val; }

protected:
    QString _symbol;
    float _high;
    float _low;
    float _close;
    unsigned int _volume;
};

// Represents a set of stocks
class StockDataSet
{
public:
    StockDataSet();
    virtual ~StockDataSet();

    inline unsigned int numStocks(void) const
    { return _stocks.size(); }

    virtual void insertStock(int position = -1);
    virtual void removeStock(int idx);

    QString symbol(int idx) const;
    virtual void setSymbol(int idx, QString sym);

    float high(int idx) const;
    virtual void setHigh(int idx, float val);

    float low(int idx) const;
    virtual void setLow(int idx, float val);

    float close(int idx) const;
    virtual void setClose(int idx, float val);

    unsigned int volume(int idx) const;
    virtual void setVolume(int idx, unsigned int val);

protected:
    typedef QVector<StockPrivate *> StockList;

    StockList _stocks;
};


class StockDataModel : public QicsDataModel, public StockDataSet
{
    Q_OBJECT
public:
    StockDataModel();
    virtual ~StockDataModel();

    const QicsDataItem *item(int row, int col) const;

    QicsDataModelRow rowItems(int row, int first_col=0, int last_col=-1) const;
    QicsDataModelColumn columnItems(int col, int first_row=0, int last_row=-1) const;

    void setRowItems(int row, const QicsDataModelRow &v);
    void setColumnItems(int col, const QicsDataModelColumn &v);

    // reimplemented methods of the StockDataSet
    void setSymbol(unsigned int idx, QString sym);
    void setHigh(unsigned int idx, float val);
    void setLow(unsigned int idx, float val);
    void setClose(unsigned int idx, float val);
    void setVolume(unsigned int idx, unsigned int val);
    void insertStock(int position = -1);
    void removeStock(unsigned int idx);

public slots:
    void setItem(int row, int col, const QicsDataItem &item);

//#if !defined(__GNUC__) || (__GNUC__ >= 3)
    // need this or else setItem() hides other setItem methods in superclass
//    using QicsDataModel::setItem;
//#endif

    void clearItem(int row, int col);
    void clearModel(void);

    void addRows(int number_of_rows);
    void addColumns(int number_of_columns);

    void insertRows(int number_of_rows, int starting_position);
    void insertColumns(int number_of_columns, int starting_position);

    void deleteRow(int row);
    void deleteRows(int num_rows, int start_row);
    void deleteColumn(int col);
    void deleteColumns(int num_cols, int start_col);

protected:
    enum { SDM_Symbol = 0, SDM_Close = 1, SDM_High = 2,
       SDM_Low = 3, SDM_Volume = 4, SDM_NumDataItems = 5 } StockDataIndex;

    QicsDataItem *_item;
};

#endif /* _CUSTOM_DATA_MODEL_H */
QicsTable Documentation Set

custom_data_model.h
