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/****************************************************************************
**
** Copyright (C) 2013 Sandro S. Andrade <sandroandrade@kde.org>
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtModeling module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGUARDEDLIST_H
#define QGUARDEDLIST_H
#include <QtModeling/QtModelingGlobal>
#include <QtModeling/QWrappedObject>
#include <QtCore/QObject>
#include "private/qobject_p.h"
#include <QtCore/QList>
// QGuardedList does not work with foreach constructor because it requires the container
// type be copiable. Since QGuardedList inherits from QObject that isn't possible
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(QtModeling)
class Q_MODELING_EXPORT QAbstractGuardedListPrivate : public QObjectPrivate
{
public:
QList<QWrappedObject *> list;
};
class Q_MODELING_EXPORT QAbstractGuardedList : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QAbstractGuardedList)
public:
Q_INVOKABLE virtual inline QWrappedObject *at(int index) const { Q_D(const QAbstractGuardedList); return d->list.at(index); }
Q_INVOKABLE virtual inline bool contains(QWrappedObject *wobject) const { Q_D(const QAbstractGuardedList); return d->list.contains(wobject); }
Q_INVOKABLE inline int size() const { Q_D(const QAbstractGuardedList); return d->list.size(); }
public Q_SLOTS:
virtual inline void insert(QWrappedObject *wobject)
{
Q_D(QAbstractGuardedList);
if (!d->list.contains(wobject)) {
d->list.append(wobject);
connect(wobject, SIGNAL(destroyed(QObject*)), this, SLOT(remove(QWrappedObject*)));
emit objectInserted(wobject);
}
}
virtual inline int remove(QObject *object)
{
Q_D(QAbstractGuardedList);
disconnect(object, SIGNAL(destroyed(QObject*)), this, SLOT(remove(QObject*)));
QWrappedObject *wobject = qobject_cast<QWrappedObject *>(object);
int r = d->list.removeAll(wobject);
if (r > 0)
emit objectRemoved(wobject);
return r;
}
Q_SIGNALS:
void objectRemoved(QWrappedObject *wobject);
void objectInserted(QWrappedObject *wobject);
protected:
QAbstractGuardedList(QObject *parent = 0) : QObject(*new QAbstractGuardedListPrivate, parent) { }
template <class T>
inline const QList<T *> *toQList() const { Q_D(const QAbstractGuardedList); return reinterpret_cast<const QList<T *> *>(&d->list); }
template <class T>
inline QList<T *> *toQList() { Q_D(QAbstractGuardedList); return reinterpret_cast<QList<T *> *>(&d->list); }
};
template <typename T>
class Q_MODELING_EXPORT QGuardedList : public QAbstractGuardedList
{
public:
typedef typename QList<T *>::const_iterator const_iterator;
QGuardedList(QObject *parent = 0) : QAbstractGuardedList(parent) { }
inline const_iterator cbegin() const { return toQList<T>()->cbegin(); }
inline const_iterator cend() const { return toQList<T>()->cend(); }
inline T *at(int index) const { return qobject_cast<T *>(QAbstractGuardedList::at(index)); }
inline bool contains(T *wobject) const { return QAbstractGuardedList::contains(wobject); }
inline void insert(T *wobject) { QAbstractGuardedList::insert(wobject); }
inline int remove(T *wobject) { return QAbstractGuardedList::remove(wobject); }
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QGUARDEDLIST_H
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