Finalize the instance settings dialog, add setting reset mechanism

libsettings/include/inisettingsobject.h

@@ -47,6 +47,7 @@ public:
 	
 protected slots:
 	virtual void changeSetting(const Setting &setting, QVariant value);
+	virtual void resetSetting ( const Setting& setting );
 	
 protected:
 	virtual QVariant retrieveValue(const Setting &setting);

libsettings/include/setting.h

@@ -84,6 +84,12 @@ signals:
 	 */
 	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.
@@ -93,6 +99,13 @@ public slots:
 	 */
 	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.
+	 * \param value The new value.
+	 */
+	virtual void reset();
 protected:
 	QString m_id;
 	QVariant m_defVal;

libsettings/include/settingsobject.h

@@ -100,6 +100,11 @@ public:
 	 */
 	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.
@@ -125,6 +130,14 @@ signals:
 	 */
 	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.
@@ -136,6 +149,15 @@ protected slots:
 	 */
 	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.

libsettings/src/inisettingsobject.cpp

@@ -40,6 +40,15 @@ void INISettingsObject::changeSetting(const Setting &setting, QVariant value)
 	}
 }
 
+void INISettingsObject::resetSetting ( const Setting& setting )
+{
+	if (contains(setting.id()))
+	{
+		m_ini.remove(setting.configKey());
+		m_ini.saveFile(m_filePath);
+	}
+}
+
 QVariant INISettingsObject::retrieveValue(const Setting &setting)
 {
 	if (contains(setting.id()))

libsettings/src/setting.cpp

@@ -47,3 +47,8 @@ void Setting::set(QVariant value)
 {
 	emit settingChanged(*this, value);
 }
+
+void Setting::reset()
+{
+	emit settingReset(*this);
+}

libsettings/src/settingsobject.cpp

@@ -98,6 +98,14 @@ bool SettingsObject::set(const QString &id, QVariant value)
 	}
 }
 
+void SettingsObject::reset(const QString &id) const
+{
+	Setting *setting = getSetting(id);
+	if(setting)
+		setting->reset();
+}
+
+
 QList<Setting *> SettingsObject::getSettings()
 {
 	return m_settings.values();
@@ -115,6 +123,11 @@ void SettingsObject::connectSignals(const Setting &setting)
 			SLOT(changeSetting(const Setting &, QVariant)));
 	connect(&setting, SIGNAL(settingChanged(const Setting &, QVariant)),
 			SIGNAL(settingChanged(const Setting &, QVariant)));
+	
+	connect(&setting, SIGNAL(settingReset(Setting)),
+			SLOT(resetSetting(const Setting &)));
+	connect(&setting, SIGNAL(settingReset(Setting)),
+			SIGNAL(settingReset(const Setting &)));
 }
 
 void SettingsObject::disconnectSignals(const Setting &setting)
@@ -123,4 +136,9 @@ void SettingsObject::disconnectSignals(const Setting &setting)
 					   this, SLOT(changeSetting(const Setting &, QVariant)));
 	setting.disconnect(SIGNAL(settingChanged(const Setting &, QVariant)),
 					   this, SIGNAL(settingChanged(const Setting &, QVariant)));
+	
+	setting.disconnect(SIGNAL(settingReset(const Setting &, QVariant)),
+					   this, SLOT(resetSetting(const Setting &, QVariant)));
+	setting.disconnect(SIGNAL(settingReset(const Setting &, QVariant)),
+					   this, SIGNAL(settingReset(const Setting &, QVariant)));
 }