73 lines
1.9 KiB
C++
Executable file
73 lines
1.9 KiB
C++
Executable file
// This file is part of RSS Guard.
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//
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// Copyright (C) 2011-2015 by Martin Rotter <rotter.martinos@gmail.com>
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//
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// RSS Guard is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// RSS Guard is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with RSS Guard. If not, see <http://www.gnu.org/licenses/>.
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#include "miscellaneous/autosaver.h"
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#include <QDir>
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#include <QCoreApplication>
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#include <QMetaObject>
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#define AUTOSAVE_IN 1000 * 3 // seconds
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#define MAXWAIT 1000 * 15 // seconds
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AutoSaver::AutoSaver(QObject *parent) : QObject(parent) {
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Q_ASSERT(parent);
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}
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AutoSaver::~AutoSaver() {
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if (m_timer.isActive()) {
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qWarning("AutoSaver: still active when destroyed, changes not saved.");
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if (parent() && parent()->metaObject()) {
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qWarning("Should call saveIfNeccessary.");
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}
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}
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}
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void AutoSaver::changeOccurred() {
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if (m_firstChange.isNull()) {
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m_firstChange.start();
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}
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if (m_firstChange.elapsed() > MAXWAIT) {
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saveIfNeccessary();
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}
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else {
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m_timer.start(AUTOSAVE_IN, this);
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}
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}
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void AutoSaver::timerEvent(QTimerEvent *event) {
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if (event->timerId() == m_timer.timerId()) {
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saveIfNeccessary();
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}
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else {
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QObject::timerEvent(event);
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}
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}
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void AutoSaver::saveIfNeccessary() {
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if (m_timer.isActive()) {
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m_timer.stop();
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m_firstChange = QTime();
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if (!QMetaObject::invokeMethod(parent(), "save", Qt::DirectConnection)) {
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qWarning("AutoSaver: error invoking slot save() on parent.");
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}
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}
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}
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