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Diffstat (limited to 'logic/settings/Setting.h')
-rw-r--r-- | logic/settings/Setting.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/logic/settings/Setting.h b/logic/settings/Setting.h new file mode 100644 index 00000000..406bdada --- /dev/null +++ b/logic/settings/Setting.h @@ -0,0 +1,117 @@ +/* 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. + */ + +#pragma once + +#include <QObject> +#include <QVariant> +#include <QStringList> +#include <memory> + +class SettingsObject; + +/*! + * + */ +class 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; +}; |