/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/

#ifndef PERSISTENTSETTINGS_H
#define PERSISTENTSETTINGS_H

#include "utils_global.h"

#include "fileutils.h"

#include <QMap>
#include <QVariant>

QT_BEGIN_NAMESPACE
class QWidget;
QT_END_NAMESPACE

namespace Utils {

class QTCREATOR_UTILS_EXPORT PersistentSettingsReader
{
public:
    PersistentSettingsReader();
    QVariant restoreValue(const QString &variable) const;
    QVariantMap restoreValues() const;
    bool load(const FileName &fileName);

private:
    QMap<QString, QVariant> m_valueMap;
};

class QTCREATOR_UTILS_EXPORT PersistentSettingsWriter
{
public:
    PersistentSettingsWriter(const FileName &fileName, const QString &docType);
    ~PersistentSettingsWriter();

    bool save(const QVariantMap &data, QWidget *parent) const;

    Utils::FileName fileName() const;

private:
    bool write(const QVariantMap &data, QWidget *parent) const;

    const Utils::FileName m_fileName;
    const QString m_docType;
    mutable QMap<QString, QVariant> m_savedData;
};

} // namespace Utils

#endif // PERSISTENTSETTINGS_H