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/*
This file is part of KCachegrind.
SPDX-FileCopyrightText: 2008-2016 Josef Weidendorfer <Josef.Weidendorfer@gmx.de>
SPDX-License-Identifier: GPL-2.0-only
*/
#ifndef CONFIG_H
#define CONFIG_H
#include <QString>
#include <QVariant>
class ConfigStorage;
// helper functions for storing specific values
QList<int> toIntList(QStringList l);
QStringList toStringList(QList<int> l);
/**
* A group of configuration settings.
* Actual implementation for the backends is done in derived classes.
*/
class ConfigGroup
{
friend class ConfigStorage;
public:
virtual ~ConfigGroup();
// when value is defaultValue, any previous stored value is removed
virtual void setValue(const QString& key, const QVariant& value,
const QVariant& defaultValue = QVariant());
virtual QVariant value(const QString & key,
const QVariant& defaultValue) const;
// the template version is needed for GUI Qt types
template<typename T>
inline T value(const QString & key,
const QVariant & defaultValue = QVariant()) const
{ return qvariant_cast<T>( value(key, defaultValue) ); }
protected:
ConfigGroup();
};
/**
* This is an adapter class for different configuration backends.
* A singleton.
*/
class ConfigStorage
{
public:
ConfigStorage();
virtual ~ConfigStorage();
// if second parameter is not-empty, first search for an existing
// group using the optional suffix, and then without.
// the group gets readonly.
static ConfigGroup* group(const QString& group,
const QString& optSuffix = QString());
static void setStorage(ConfigStorage*);
static void cleanup();
protected:
virtual ConfigGroup* getGroup(const QString& group,
const QString& optSuffix);
static ConfigStorage* _storage;
};
#endif // CONFIG_H
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