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// SPDX-FileCopyrightText: 2016 - 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: LGPL-3.0-or-later
#pragma once
#include <QObject>
#include <QPointer>
#include <QScopedPointer>
#include "dtkcore_global.h"
DCORE_BEGIN_NAMESPACE
class DSettingsBackend;
class DSettingsOption;
class DSettingsGroup;
class DSettingsPrivate;
class LIBDTKCORESHARED_EXPORT DSettings : public QObject
{
Q_OBJECT
public:
explicit DSettings(QObject *parent = Q_NULLPTR);
~DSettings();
void setBackend(DSettingsBackend *backend = nullptr);
static QPointer<DSettings> fromJson(const QByteArray &json);
static QPointer<DSettings> fromJsonFile(const QString &filepath);
QJsonObject meta() const;
QStringList keys() const;
QList<QPointer<DSettingsOption>> options() const;
QPointer<DSettingsOption> option(const QString &key) const;
QVariant value(const QString &key) const;
QStringList groupKeys() const;
QList<QPointer<DSettingsGroup>> groups() const;
QPointer<DSettingsGroup> group(const QString &key) const;
QVariant getOption(const QString &key) const;
Q_SIGNALS:
void valueChanged(const QString &key, const QVariant &value);
public Q_SLOTS:
//!
//! \brief sync
//! WARNING: sync will block
void sync() ;
void setOption(const QString &key, const QVariant &value);
void reset() ;
private:
void parseJson(const QByteArray &json);
void loadValue();
QScopedPointer<DSettingsPrivate> dd_ptr;
Q_DECLARE_PRIVATE_D(qGetPtrHelper(dd_ptr), DSettings)
};
DCORE_END_NAMESPACE
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