/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qbs.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** use the contact form at http://www.qt.io/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
** following information to ensure the GNU Lesser General Public License
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** In addition, as a special exception, The Qt Company gives you certain additional
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****************************************************************************/
#ifndef QBS_PROGRESSOBSERVER_H
#define QBS_PROGRESSOBSERVER_H

#include <QtGlobal>

QT_BEGIN_NAMESPACE
class QString;
QT_END_NAMESPACE

namespace qbs {
namespace Internal {

class ProgressObserver
{
public:
    virtual ~ProgressObserver() { }

    virtual void initialize(const QString &task, int maximum) = 0;
    virtual void setProgressValue(int value) = 0;
    virtual int progressValue() = 0;
    virtual bool canceled() const = 0;
    virtual void setMaximum(int maximum) = 0;
    virtual int maximum() const = 0;

    void incrementProgressValue(int increment = 1);

    // Call this to ensure that the progress bar always goes to 100%.
    void setFinished();
};

} // namespace Internal
} // namespace qbs

#endif // QBS_PROGRESSOBSERVER_H
