KDChartDiagramObserver.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 __KDCHARTDIAGRAMOBSERVER_H_
#define __KDCHARTDIAGRAMOBSERVER_H_
 
#include "KDChartGlobal.h"
 
#include <QModelIndex>
#include <QObject>
#include <QPointer>
 
QT_BEGIN_NAMESPACE
class QAbstractItemModel;
QT_END_NAMESPACE
 
namespace KDChart {
 
class AbstractDiagram;
 
class KDCHART_EXPORT DiagramObserver : public QObject
{
    Q_OBJECT
public:
    explicit DiagramObserver(AbstractDiagram *diagram, QObject *parent = nullptr);
    ~DiagramObserver() override;
 
    const AbstractDiagram *diagram() const;
    AbstractDiagram *diagram();
 
Q_SIGNALS:
    void diagramDestroyed(AbstractDiagram *diagram);
    void diagramAboutToBeDestroyed(AbstractDiagram *diagram);
    void diagramDataChanged(AbstractDiagram *diagram);
    void diagramDataHidden(AbstractDiagram *diagram);
    void diagramAttributesChanged(AbstractDiagram *diagram);
 
private Q_SLOTS:
    void slotDestroyed(QObject *);
    void slotAboutToBeDestroyed();
    void slotHeaderDataChanged(Qt::Orientation, int, int);
    void slotDataChanged(QModelIndex, QModelIndex);
    void slotDataChanged();
    void slotDataHidden();
    void slotAttributesChanged();
    void slotAttributesChanged(QModelIndex, QModelIndex);
    void slotModelsChanged();
 
private:
    void init();
 
    AbstractDiagram *m_diagram;
    QPointer<QAbstractItemModel> m_model;
    QPointer<QAbstractItemModel> m_attributesmodel;
};
}
 
#endif // KDChartDiagramObserver_H