185 lines
6.3 KiB
C++
185 lines
6.3 KiB
C++
/* 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 <QMap>
|
|
|
|
#include "libsettings_config.h"
|
|
|
|
class Setting;
|
|
|
|
/*!
|
|
* \brief The SettingsObject handles communicating settings between the application and a settings file.
|
|
* The class keeps a list of Setting objects. Each Setting object represents one
|
|
* of the application's settings. These Setting objects are registered with
|
|
* a SettingsObject and can be managed similarly to the way a list works.
|
|
*
|
|
* \author Andrew Okin
|
|
* \date 2/22/2013
|
|
*
|
|
* \sa Setting
|
|
*/
|
|
class LIBSETTINGS_EXPORT SettingsObject : public QObject
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
explicit SettingsObject(QObject *parent = 0);
|
|
|
|
/*!
|
|
* \brief Registers the given setting with this SettingsObject and connects the necessary signals.
|
|
* This will fail if there is already a setting with the same ID as
|
|
* the one that is being registered.
|
|
* \note Registering a setting object causes the SettingsObject to take ownership
|
|
* of the object. This means that setting's parent will be set to the object
|
|
* it was registered with. Because the object it was registered with has taken
|
|
* ownership, it becomes responsible for managing that setting object's memory.
|
|
* \warning Do \b not delete the setting after registering it.
|
|
* \param setting A pointer to the setting that will be registered.
|
|
* \return True if successful. False if registry failed.
|
|
*/
|
|
virtual bool registerSetting(Setting *setting);
|
|
|
|
/*!
|
|
* \brief Unregisters the given setting from this SettingsObject and disconnects its signals.
|
|
* \note This does not delete the setting. Furthermore, when the setting is
|
|
* unregistered, the SettingsObject drops ownership of the setting. This means
|
|
* that if you unregister a setting, its parent is set to null and you become
|
|
* responsible for freeing its memory.
|
|
* \param setting The setting to unregister.
|
|
*/
|
|
virtual void unregisterSetting(Setting *setting);
|
|
|
|
|
|
/*!
|
|
* \brief Gets the setting with the given ID.
|
|
* \param id The ID of the setting to get.
|
|
* \return A pointer to the setting with the given ID.
|
|
* Returns null if there is no setting with the given ID.
|
|
* \sa operator []()
|
|
*/
|
|
virtual Setting *getSetting(const QString &id) const;
|
|
|
|
/*!
|
|
* \brief Same as getSetting()
|
|
* \param id The ID of the setting to get.
|
|
* \return A pointer to the setting with the given ID.
|
|
* \sa getSetting()
|
|
*/
|
|
inline Setting *operator [](const QString &id) { return getSetting(id); }
|
|
|
|
|
|
/*!
|
|
* \brief Gets the value of the setting with the given ID.
|
|
* \param id The ID of the setting to get.
|
|
* \return The setting's value as a QVariant.
|
|
* If no setting with the given ID exists, returns an invalid QVariant.
|
|
*/
|
|
virtual QVariant get(const QString &id) const;
|
|
|
|
/*!
|
|
* \brief Sets the value of the setting with the given ID.
|
|
* If no setting with the given ID exists, returns false and logs to qDebug
|
|
* \param id The ID of the setting to change.
|
|
* \param value The new value of the setting.
|
|
* \return True if successful, false if it failed.
|
|
*/
|
|
virtual bool set(const QString &id, QVariant value);
|
|
|
|
/*!
|
|
* \brief Reverts the setting with the given ID to default.
|
|
* \param id The ID of the setting to reset.
|
|
*/
|
|
virtual void reset(const QString &id) const;
|
|
|
|
/*!
|
|
* \brief Gets a QList with pointers to all of the registered settings.
|
|
* The order of the entries in the list is undefined.
|
|
* \return A QList with pointers to all registered settings.
|
|
*/
|
|
virtual QList<Setting *> getSettings();
|
|
|
|
/*!
|
|
* \brief Checks if this SettingsObject contains a setting with the given ID.
|
|
* \param id The ID to check for.
|
|
* \return True if the SettingsObject has a setting with the given ID.
|
|
*/
|
|
virtual bool contains(const QString &id);
|
|
|
|
signals:
|
|
/*!
|
|
* \brief Signal emitted when one of this SettingsObject object's settings changes.
|
|
* This is usually just connected directly to each Setting object's
|
|
* settingChanged() signals.
|
|
* \param setting A reference to the Setting object that changed.
|
|
* \param value The Setting object's new value.
|
|
*/
|
|
void settingChanged(const Setting &setting, QVariant value);
|
|
|
|
/*!
|
|
* \brief Signal emitted when one of this SettingsObject object's settings resets.
|
|
* This is usually just connected directly to each Setting object's
|
|
* settingReset() signals.
|
|
* \param setting A reference to the Setting object that changed.
|
|
*/
|
|
void settingReset(const Setting &setting);
|
|
|
|
protected slots:
|
|
/*!
|
|
* \brief Changes a setting.
|
|
* This slot is usually connected to each Setting object's
|
|
* settingChanged() signal. The signal is emitted, causing this slot
|
|
* to update the setting's value in the config file.
|
|
* \param setting A reference to the Setting object that changed.
|
|
* \param value The setting's new value.
|
|
*/
|
|
virtual void changeSetting(const Setting &setting, QVariant value) = 0;
|
|
|
|
/*!
|
|
* \brief Resets a setting.
|
|
* This slot is usually connected to each Setting object's
|
|
* settingReset() signal. The signal is emitted, causing this slot
|
|
* to update the setting's value in the config file.
|
|
* \param setting A reference to the Setting object that changed.
|
|
*/
|
|
virtual void resetSetting(const Setting &setting) = 0;
|
|
|
|
protected:
|
|
/*!
|
|
* \brief Connects the necessary signals to the given Setting.
|
|
* \param setting The setting to connect.
|
|
*/
|
|
virtual void connectSignals(const Setting &setting);
|
|
|
|
/*!
|
|
* \brief Disconnects signals from the given Setting.
|
|
* \param setting The setting to disconnect.
|
|
*/
|
|
virtual void disconnectSignals(const Setting &setting);
|
|
|
|
/*!
|
|
* \brief Function used by Setting objects to get their values from the SettingsObject.
|
|
* \param setting The
|
|
* \return
|
|
*/
|
|
virtual QVariant retrieveValue(const Setting &setting) = 0;
|
|
|
|
friend class Setting;
|
|
|
|
private:
|
|
QMap<QString, Setting *> m_settings;
|
|
};
|