deferredtask.h

/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
#ifndef _DEFERREDTASK_H
#define _DEFERREDTASK_H

#include <QObject>
#include <QString>
#include "scribusapi.h"

class QTimer;

class SCRIBUS_API DeferredTask : public QObject
{
    Q_OBJECT

public:
    virtual ~DeferredTask();

    bool isFinished() const;

    virtual const QString& lastError() const;

public slots:

    virtual void start();

    void runUntilFinished();

    virtual void cancel();

signals:
    void aborted(bool);

    void finished();

    void progress(int);

protected slots:
    virtual void next() = 0;

protected:
    DeferredTask(QObject* parent);

    QString m_lastError;

    void init();

    void cleanup();

    void done();

private:
    int m_status;

    QTimer* m_timer;
};

#endif