122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
/* Copyright 2013 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <QObject>
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#include <QVariant>
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#include "libsettings_config.h"
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class SettingsObject;
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/*!
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*
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*/
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class LIBSETTINGS_EXPORT Setting : public QObject
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{
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Q_OBJECT
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public:
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/*!
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* \brief Constructs a new Setting object with the given parent.
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* \param parent The Setting's parent object.
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*/
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explicit Setting(QString id, QVariant defVal = QVariant(), QObject *parent = 0);
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/*!
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* \brief Gets this setting's ID.
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* This is used to refer to the setting within the application.
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* \warning Changing the ID while the setting is registered with a SettingsObject results in
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* undefined behavior.
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* \return The ID of the setting.
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*/
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virtual QString id() const
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{
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return m_id;
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}
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/*!
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* \brief Gets this setting's config file key.
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* This is used to store the setting's value in the config file. It is usually
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* the same as the setting's ID, but it can be different.
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* \return The setting's config file key.
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*/
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virtual QString configKey() const
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{
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return id();
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}
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/*!
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* \brief Gets this setting's value as a QVariant.
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* This is done by calling the SettingsObject's retrieveValue() function.
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* If this Setting doesn't have a SettingsObject, this returns an invalid QVariant.
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* \return QVariant containing this setting's value.
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* \sa value()
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*/
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virtual QVariant get() const;
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/*!
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* \brief Gets this setting's actual value (I.E. not as a QVariant).
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* This function is just shorthand for get().value<T>()
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* \return The setting's actual value.
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*/
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template <typename T> inline T value() const
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{
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return get().value<T>();
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}
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/*!
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* \brief Gets this setting's default value.
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* \return The default value of this setting.
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*/
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virtual QVariant defValue() const;
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signals:
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/*!
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* \brief Signal emitted when this Setting object's value changes.
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* \param setting A reference to the Setting that changed.
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* \param value This Setting object's new value.
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*/
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void settingChanged(const Setting &setting, QVariant value);
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/*!
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* \brief Signal emitted when this Setting object's value resets to default.
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* \param setting A reference to the Setting that changed.
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*/
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void settingReset(const Setting &setting);
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public
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slots:
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/*!
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* \brief Changes the setting's value.
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* This is done by emitting the settingChanged() signal which will then be
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* handled by the SettingsObject object and cause the setting to change.
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* \param value The new value.
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*/
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virtual void set(QVariant value);
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/*!
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* \brief Reset the setting to default
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* This is done by emitting the settingReset() signal which will then be
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* handled by the SettingsObject object and cause the setting to change.
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* \param value The new value.
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*/
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virtual void reset();
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protected:
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QString m_id;
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QVariant m_defVal;
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};
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