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