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/**************************************************************************
**
** This file is part of Qt SDK**
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).*
**
** Contact: Nokia Corporation qt-info@nokia.com**
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception version
** 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you are unsure which license is appropriate for your use, please contact
** (qt-info@nokia.com).
**
**************************************************************************/
#include "globalsettingsoperation.h"
#include "qsettingswrapper.h"
using namespace QInstaller;
GlobalSettingsOperation::GlobalSettingsOperation()
{
setName(QLatin1String("GlobalConfig"));
}
void GlobalSettingsOperation::backup()
{
}
bool GlobalSettingsOperation::performOperation()
{
QString key, value;
QScopedPointer<QSettingsWrapper> settings(setup(&key, &value, arguments()));
if (settings.isNull())
return false;
if (!settings->isWritable()) {
setError(UserDefinedError);
setErrorString(tr("Settings are not writable"));
return false;
}
const QVariant oldValue = settings->value(key);
settings->setValue(key, value);
settings->sync();
if (settings->status() != QSettingsWrapper::NoError) {
setError(UserDefinedError);
setErrorString(tr("Failed to write settings"));
return false;
}
setValue(QLatin1String("oldvalue"), oldValue);
return true;
}
bool GlobalSettingsOperation::undoOperation()
{
QString key, val;
QScopedPointer<QSettingsWrapper> settings(setup(&key, &val, arguments()));
if (settings.isNull())
return false;
// be sure it's still our value and nobody changed it in between
const QVariant oldValue = value(QLatin1String("oldvalue"));
if (settings->value(key) == val) {
// restore the previous state
if (oldValue.isNull())
settings->remove(key);
else
settings->setValue(key, oldValue);
}
return true;
}
bool GlobalSettingsOperation::testOperation()
{
return true;
}
Operation *GlobalSettingsOperation::clone() const
{
return new GlobalSettingsOperation();
}
QSettingsWrapper *GlobalSettingsOperation::setup(QString *key, QString *value, const QStringList &arguments)
{
if (arguments.count() == 4) {
const QString &company = arguments.at(0);
const QString &application = arguments.at(1);
*key = arguments.at(2);
*value = arguments.at(3);
return new QSettingsWrapper(company, application);
} else if (arguments.count() == 3) {
const QString &filename = arguments.at(0);
*key = arguments.at(1);
*value = arguments.at(2);
return new QSettingsWrapper(filename, QSettingsWrapper::NativeFormat);
}
setError(InvalidArguments);
setErrorString(tr("Invalid arguments in 0%: %1 arguments given, at least 3 expected.")
.arg(name()).arg(arguments.count()));
return 0;
}
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