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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQMLADAPTORMODEL_P_H
#define QQMLADAPTORMODEL_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/qabstractitemmodel.h>
#include "private/qqmllistaccessor_p.h"
#include <private/qqmlguard_p.h>
QT_REQUIRE_CONFIG(qml_delegate_model);
QT_BEGIN_NAMESPACE
class QQmlEngine;
class QQmlDelegateModel;
class QQmlDelegateModelItem;
class QQmlDelegateModelItemMetaType;
class QQmlAdaptorModel : public QQmlGuard<QObject>
{
public:
class Accessors
{
public:
inline Accessors() {}
virtual ~Accessors();
virtual int count(const QQmlAdaptorModel &) const { return 0; }
virtual void cleanup(QQmlAdaptorModel &, QQmlDelegateModel * = nullptr) const {}
virtual QVariant value(const QQmlAdaptorModel &, int, const QString &) const {
return QVariant(); }
virtual QQmlDelegateModelItem *createItem(
QQmlAdaptorModel &,
QQmlDelegateModelItemMetaType *,
int) const { return nullptr; }
virtual bool notify(
const QQmlAdaptorModel &,
const QList<QQmlDelegateModelItem *> &,
int,
int,
const QVector<int> &) const { return false; }
virtual void replaceWatchedRoles(
QQmlAdaptorModel &,
const QList<QByteArray> &,
const QList<QByteArray> &) const {}
virtual QVariant parentModelIndex(const QQmlAdaptorModel &) const {
return QVariant(); }
virtual QVariant modelIndex(const QQmlAdaptorModel &, int) const {
return QVariant(); }
virtual bool canFetchMore(const QQmlAdaptorModel &) const { return false; }
virtual void fetchMore(QQmlAdaptorModel &) const {}
};
const Accessors *accessors;
QPersistentModelIndex rootIndex;
QQmlListAccessor list;
QQmlAdaptorModel();
~QQmlAdaptorModel();
inline QVariant model() const { return list.list(); }
void setModel(const QVariant &variant, QQmlDelegateModel *vdm, QQmlEngine *engine);
void invalidateModel(QQmlDelegateModel *vdm);
bool isValid() const;
inline QAbstractItemModel *aim() { return static_cast<QAbstractItemModel *>(object()); }
inline const QAbstractItemModel *aim() const { return static_cast<const QAbstractItemModel *>(object()); }
inline int count() const { return qMax(0, accessors->count(*this)); }
inline QVariant value(int index, const QString &role) const {
return accessors->value(*this, index, role); }
inline QQmlDelegateModelItem *createItem(QQmlDelegateModelItemMetaType *metaType, int index) {
return accessors->createItem(*this, metaType, index); }
inline bool hasProxyObject() const {
return list.type() == QQmlListAccessor::Instance || list.type() == QQmlListAccessor::ListProperty; }
inline bool notify(
const QList<QQmlDelegateModelItem *> &items,
int index,
int count,
const QVector<int> &roles) const {
return accessors->notify(*this, items, index, count, roles); }
inline void replaceWatchedRoles(
const QList<QByteArray> &oldRoles, const QList<QByteArray> &newRoles) {
accessors->replaceWatchedRoles(*this, oldRoles, newRoles); }
inline QVariant modelIndex(int index) const { return accessors->modelIndex(*this, index); }
inline QVariant parentModelIndex() const { return accessors->parentModelIndex(*this); }
inline bool canFetchMore() const { return accessors->canFetchMore(*this); }
inline void fetchMore() { return accessors->fetchMore(*this); }
protected:
void objectDestroyed(QObject *) override;
};
class QQmlAdaptorModelProxyInterface
{
public:
virtual ~QQmlAdaptorModelProxyInterface() {}
virtual QObject *proxiedObject() = 0;
};
#define QQmlAdaptorModelProxyInterface_iid "org.qt-project.Qt.QQmlAdaptorModelProxyInterface"
Q_DECLARE_INTERFACE(QQmlAdaptorModelProxyInterface, QQmlAdaptorModelProxyInterface_iid)
QT_END_NAMESPACE
#endif
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