120 lines
2.6 KiB
C++
120 lines
2.6 KiB
C++
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/* Copyright 2015 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "BaseConfigObject.h"
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#include <QTimer>
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#include <QSaveFile>
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#include <QFile>
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#include <QCoreApplication>
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#include <QDebug>
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#include "Exception.h"
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BaseConfigObject::BaseConfigObject(const QString &filename)
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: m_filename(filename)
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{
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m_saveTimer = new QTimer;
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m_saveTimer->setSingleShot(true);
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// cppcheck-suppress pureVirtualCall
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QObject::connect(m_saveTimer, &QTimer::timeout, [this](){saveNow();});
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setSaveTimeout(250);
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m_initialReadTimer = new QTimer;
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m_initialReadTimer->setSingleShot(true);
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QObject::connect(m_initialReadTimer, &QTimer::timeout, [this]()
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{
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loadNow();
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m_initialReadTimer->deleteLater();
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m_initialReadTimer = 0;
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});
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m_initialReadTimer->start(0);
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// cppcheck-suppress pureVirtualCall
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m_appQuitConnection = QObject::connect(qApp, &QCoreApplication::aboutToQuit, [this](){saveNow();});
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}
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BaseConfigObject::~BaseConfigObject()
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{
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delete m_saveTimer;
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if (m_initialReadTimer)
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{
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delete m_initialReadTimer;
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}
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QObject::disconnect(m_appQuitConnection);
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}
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void BaseConfigObject::setSaveTimeout(int msec)
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{
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m_saveTimer->setInterval(msec);
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}
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void BaseConfigObject::scheduleSave()
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{
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m_saveTimer->stop();
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m_saveTimer->start();
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}
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void BaseConfigObject::saveNow()
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{
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if (m_saveTimer->isActive())
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{
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m_saveTimer->stop();
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}
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if (m_disableSaving)
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{
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return;
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}
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QSaveFile file(m_filename);
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if (!file.open(QFile::WriteOnly))
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{
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qWarning() << "Couldn't open" << m_filename << "for writing:" << file.errorString();
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return;
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}
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// cppcheck-suppress pureVirtualCall
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file.write(doSave());
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if (!file.commit())
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{
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qCritical() << "Unable to commit the file" << file.fileName() << ":" << file.errorString();
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file.cancelWriting();
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}
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}
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void BaseConfigObject::loadNow()
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{
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if (m_saveTimer->isActive())
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{
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saveNow();
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}
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QFile file(m_filename);
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if (!file.exists())
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{
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return;
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}
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if (!file.open(QFile::ReadOnly))
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{
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qWarning() << "Couldn't open" << m_filename << "for reading:" << file.errorString();
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return;
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}
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try
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{
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doLoad(file.readAll());
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}
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catch (Exception &e)
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{
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qWarning() << "Error loading" << m_filename << ":" << e.cause();
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}
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}
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