89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
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/****************************************************************************
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** Copyright (C) 2001-2011 Klaralvdalens Datakonsult AB. All rights reserved.
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**
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** This file is part of the KD Chart library.
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**
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** Licensees holding valid commercial KD Chart licenses may use this file in
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** accordance with the KD Chart Commercial License Agreement provided with
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** the Software.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 and version 3 as published by the
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** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** Contact info@kdab.com if any conditions of this licensing are not
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** clear to you.
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**
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**********************************************************************/
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#ifndef __KDCHARTDIAGRAMOBSERVER_H_
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#define __KDCHARTDIAGRAMOBSERVER_H_
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#include "KDChartGlobal.h"
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#include <QObject>
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#include <QPointer>
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#include <QModelIndex>
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class QAbstractItemModel;
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namespace KDChart {
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class AbstractDiagram;
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/**
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* \brief A DiagramObserver watches the associated diagram for
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* changes and deletion and emits corresponsing signals.
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*/
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class KDCHART_EXPORT DiagramObserver : public QObject
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{
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Q_OBJECT
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public:
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/**
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* Constructs a new observer observing the given diagram.
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*/
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explicit DiagramObserver( AbstractDiagram * diagram, QObject* parent = 0 );
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~DiagramObserver();
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const AbstractDiagram* diagram() const;
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AbstractDiagram* diagram();
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Q_SIGNALS:
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/** This signal is emitted immediately before the diagram is
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* being destroyed. */
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void diagramDestroyed( AbstractDiagram* diagram );
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/** Emitted when a diagram is being destroyed, but before its data is invalidated **/
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void diagramAboutToBeDestroyed( AbstractDiagram* diagram );
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/** This signal is emitted whenever the data of the diagram changes. */
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void diagramDataChanged( AbstractDiagram* diagram );
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/** This signal is emitted whenever any of the data of the diagram was set (un)hidden. */
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void diagramDataHidden( AbstractDiagram* diagram );
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/** This signal is emitted whenever the attributes of the diagram change. */
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void diagramAttributesChanged( AbstractDiagram* diagram );
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private Q_SLOTS:
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void slotDestroyed(QObject*);
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void slotAboutToBeDestroyed();
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void slotHeaderDataChanged(Qt::Orientation,int,int);
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void slotDataChanged(QModelIndex,QModelIndex);
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void slotDataChanged();
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void slotDataHidden();
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void slotAttributesChanged();
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void slotAttributesChanged(QModelIndex,QModelIndex);
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void slotModelsChanged();
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private:
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void init();
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AbstractDiagram* m_diagram;
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QPointer<QAbstractItemModel> m_model;
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QPointer<QAbstractItemModel> m_attributesmodel;
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};
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}
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#endif // KDChartDiagramObserver_H
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