KDChartAttributesModel.h

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/****************************************************************************
**
** This file is part of the KD Chart library.
**
** SPDX-FileCopyrightText: 2001 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
**
** SPDX-License-Identifier: MIT
**
****************************************************************************/
 
#ifndef __KDCHART_ATTRIBUTES_MODEL_H__
#define __KDCHART_ATTRIBUTES_MODEL_H__
 
#include "KDChartAbstractProxyModel.h"
#include <QMap>
#include <QVariant>
 
#include "KDChartGlobal.h"
 
namespace KDChart {
 
class KDCHART_EXPORT AttributesModel : public AbstractProxyModel
{
    Q_OBJECT
    KDCHART_DECLARE_PRIVATE_BASE_POLYMORPHIC(AttributesModel)
public:
    enum PaletteType
    {
        PaletteTypeDefault = 0,
        PaletteTypeRainbow = 1,
        PaletteTypeSubdued = 2
    };
 
    explicit AttributesModel(QAbstractItemModel *model, QObject *parent = nullptr);
    ~AttributesModel() override;
 
    void initFrom(const AttributesModel *other);
 
    bool compare(const AttributesModel *other) const;
 
    bool compareAttributes(int role, const QVariant &a, const QVariant &b) const;
 
    /* Attributes Model specific API */
    bool setModelData(const QVariant value, int role);
    QVariant modelData(int role) const;
 
    bool isKnownAttributesRole(int role) const;
 
    void setPaletteType(PaletteType type);
    PaletteType paletteType() const;
 
    QVariant data(int role) const;
 
    QVariant data(int column, int role) const;
 
    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
    int rowCount(const QModelIndex &) const override;
    int columnCount(const QModelIndex &) const override;
    QVariant data(const QModelIndex &, int role = Qt::DisplayRole) const override;
    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::DisplayRole) override;
    bool resetData(const QModelIndex &index, int role = Qt::DisplayRole);
    bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value,
                       int role = Qt::DisplayRole) override;
    virtual QVariant defaultHeaderData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
    bool resetHeaderData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole);
    void setSourceModel(QAbstractItemModel *sourceModel) override;
 
    void setDefaultForRole(int role, const QVariant &value);
 
    void setDatasetDimension(int dimension);
    int datasetDimension() const;
 
Q_SIGNALS:
    void attributesChanged(const QModelIndex &, const QModelIndex &);
 
private Q_SLOTS:
    void slotRowsAboutToBeInserted(const QModelIndex &parent, int start, int end);
    void slotColumnsAboutToBeInserted(const QModelIndex &parent, int start, int end);
    void slotRowsInserted(const QModelIndex &parent, int start, int end);
    void slotColumnsInserted(const QModelIndex &parent, int start, int end);
 
    void slotRowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
    void slotColumnsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
    void slotRowsRemoved(const QModelIndex &parent, int start, int end);
    void slotColumnsRemoved(const QModelIndex &parent, int start, int end);
 
    void slotDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
 
private:
    // helper
    QVariant defaultsForRole(int role) const;
    bool compareHeaderDataMaps(const QMap<int, QMap<int, QVariant>> &mapA,
                               const QMap<int, QMap<int, QVariant>> &mapB) const;
 
    void removeEntriesFromDataMap(int start, int end);
    void removeEntriesFromDirectionDataMaps(Qt::Orientation dir, int start, int end);
};
}
 
#endif