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/**************************************************************************** ** ** Copyright (C) 2007-2008 Trolltech ASA. All rights reserved. ** ** This file is part of the documentation of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License versions 2.0 or 3.0 as published by the Free Software ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Alternatively you may (at ** your option) use any later version of the GNU General Public ** License if such license has been publicly approved by Trolltech ASA ** (or its successors, if any) and the KDE Free Qt Foundation. In ** addition, as a special exception, Trolltech gives you certain ** additional rights. These rights are described in the Trolltech GPL ** Exception version 1.2, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** Please review the following information to ensure GNU General ** Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If ** you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech, as the sole ** copyright holder for Qt Designer, grants users of the Qt/Eclipse ** Integration plug-in the right for the Qt/Eclipse Integration to ** link to functionality provided by Qt Designer and its related ** libraries. ** ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly ** granted herein. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #include "autosave.h" #include <QtCore/QDir> #include <QtCore/QCoreApplication> #include <QtCore/QMetaObject> #include <QtDebug> #define AUTOSAVE_IN 1000 * 3 // seconds #define MAXWAIT 1000 * 15 // seconds AutoSave::AutoSave(QObject *parent) : QObject(parent) { Q_ASSERT(parent); } AutoSave::~AutoSave() { if (m_timer.isActive()) qWarning() << "AutoSave: still active when destroyed, changes not saved."; } void AutoSave::changed() { if (m_firstChange.isNull()) m_firstChange.start(); if (m_firstChange.elapsed() > MAXWAIT) { saveNow(); } else { m_timer.start(AUTOSAVE_IN, this); } } void AutoSave::timerEvent(QTimerEvent *event) { if (event->timerId() == m_timer.timerId()) { saveNow(); } else { QObject::timerEvent(event); } } void AutoSave::saveNow() { if (!m_timer.isActive()) return; m_timer.stop(); m_firstChange = QTime(); if (!QMetaObject::invokeMethod(parent(), "save", Qt::DirectConnection)) { qWarning() << "AutoSave: error invoking slot save() on parent"; } }
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