qobjectcleanuphandler.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qobjectcleanuphandler.h"
 
QT_BEGIN_NAMESPACE
 
QObjectCleanupHandler::QObjectCleanupHandler()
{
}
 
QObjectCleanupHandler::~QObjectCleanupHandler()
{
    clear();
}
 
QObject *QObjectCleanupHandler::add(QObject *object)
{
    if (!object)
        return nullptr;
 
    connect(object, SIGNAL(destroyed(QObject*)), this, SLOT(objectDestroyed(QObject*)));
    cleanupObjects.insert(0, object);
    return object;
}
 
void QObjectCleanupHandler::remove(QObject *object)
{
    int index;
    if ((index = cleanupObjects.indexOf(object)) != -1) {
        cleanupObjects.removeAt(index);
        disconnect(object, SIGNAL(destroyed(QObject*)), this, SLOT(objectDestroyed(QObject*)));
    }
}
 
bool QObjectCleanupHandler::isEmpty() const
{
    return cleanupObjects.isEmpty();
}
 
void QObjectCleanupHandler::clear()
{
    while (!cleanupObjects.isEmpty())
        delete cleanupObjects.takeFirst();
}
 
void QObjectCleanupHandler::objectDestroyed(QObject *object)
{
    remove(object);
}
 
QT_END_NAMESPACE
 
#include "moc_qobjectcleanuphandler.cpp"