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Diffstat (limited to 'libsettings/include/setting.h')
-rw-r--r-- | libsettings/include/setting.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/libsettings/include/setting.h b/libsettings/include/setting.h new file mode 100644 index 00000000..49185347 --- /dev/null +++ b/libsettings/include/setting.h @@ -0,0 +1,101 @@ +/* Copyright 2013 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. + */ + +#ifndef SETTING_H +#define SETTING_H + +#include <QObject> +#include <QVariant> + +#include "libsettings_config.h" + +class SettingsObject; + +/*! + * + */ +class LIBMMCSETTINGS_EXPORT Setting : public QObject +{ + Q_OBJECT +public: + /*! + * \brief Constructs a new Setting object with the given parent. + * \param parent The Setting's parent object. + */ + explicit Setting(QString id, QVariant defVal = QVariant(), QObject *parent = 0); + + /*! + * \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_id; } + + /*! + * \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 QString configKey() const { return id(); } + + /*! + * \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 actual value (I.E. not as a QVariant). + * This function is just shorthand for get().value<T>() + * \return The setting's actual value. + */ + template<typename T> + inline T value() const { return get().value<T>(); } + + + /*! + * \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); + +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); + +protected: + QString m_id; + QVariant m_defVal; +}; + +#endif // SETTING_H |