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/* Copyright 2013-2019 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <QObject>
#include <QVariant>
#include <QStringList>
#include <memory>
#include "multimc_logic_export.h"
class SettingsObject;
/*!
*
*/
class MULTIMC_LOGIC_EXPORT Setting : public QObject
{
Q_OBJECT
public:
/**
* Construct a Setting
*
* Synonyms are all the possible names used in the settings object, in order of preference.
* First synonym is the ID, which identifies the setting in MultiMC.
*
* defVal is the default value that will be returned when the settings object
* doesn't have any value for this setting.
*/
explicit Setting(QStringList synonyms, QVariant defVal = QVariant());
/*!
* \brief Gets this setting's ID.
* This is used to refer to the setting within the application.
* \warning Changing the ID while the setting is registered with a SettingsObject results in
* undefined behavior.
* \return The ID of the setting.
*/
virtual QString id() const
{
return m_synonyms.first();
}
/*!
* \brief Gets this setting's config file key.
* This is used to store the setting's value in the config file. It is usually
* the same as the setting's ID, but it can be different.
* \return The setting's config file key.
*/
virtual QStringList configKeys() const
{
return m_synonyms;
}
/*!
* \brief Gets this setting's value as a QVariant.
* This is done by calling the SettingsObject's retrieveValue() function.
* If this Setting doesn't have a SettingsObject, this returns an invalid QVariant.
* \return QVariant containing this setting's value.
* \sa value()
*/
virtual QVariant get() const;
/*!
* \brief Gets this setting's default value.
* \return The default value of this setting.
*/
virtual QVariant defValue() const;
signals:
/*!
* \brief Signal emitted when this Setting object's value changes.
* \param setting A reference to the Setting that changed.
* \param value This Setting object's new value.
*/
void SettingChanged(const Setting &setting, QVariant value);
/*!
* \brief Signal emitted when this Setting object's value resets to default.
* \param setting A reference to the Setting that changed.
*/
void settingReset(const Setting &setting);
public
slots:
/*!
* \brief Changes the setting's value.
* This is done by emitting the SettingChanged() signal which will then be
* handled by the SettingsObject object and cause the setting to change.
* \param value The new value.
*/
virtual void set(QVariant value);
/*!
* \brief Reset the setting to default
* This is done by emitting the settingReset() signal which will then be
* handled by the SettingsObject object and cause the setting to change.
*/
virtual void reset();
protected:
friend class SettingsObject;
SettingsObject * m_storage;
QStringList m_synonyms;
QVariant m_defVal;
};
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