/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QSGVISUALDATAMODEL_P_H
#define QSGVISUALDATAMODEL_P_H

#include <private/qsgvisualitemmodel_p.h>
#include <QtCore/qabstractitemmodel.h>

QT_BEGIN_HEADER

Q_DECLARE_METATYPE(QModelIndex)

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QDeclarativeComponent;
class QDeclarativePackage;
class QSGVisualDataModelPrivate;
class Q_DECLARATIVE_EXPORT QSGVisualDataModel : public QSGVisualModel
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QSGVisualDataModel)

    Q_PROPERTY(QVariant model READ model WRITE setModel)
    Q_PROPERTY(QDeclarativeComponent *delegate READ delegate WRITE setDelegate)
    Q_PROPERTY(QObject *parts READ parts CONSTANT)
    Q_PROPERTY(QVariant rootIndex READ rootIndex WRITE setRootIndex NOTIFY rootIndexChanged)
    Q_CLASSINFO("DefaultProperty", "delegate")
public:
    QSGVisualDataModel();
    QSGVisualDataModel(QDeclarativeContext *, QObject *parent=0);
    virtual ~QSGVisualDataModel();

    QVariant model() const;
    void setModel(const QVariant &);

    QDeclarativeComponent *delegate() const;
    void setDelegate(QDeclarativeComponent *);

    QVariant rootIndex() const;
    void setRootIndex(const QVariant &root);

    Q_INVOKABLE QVariant modelIndex(int idx) const;
    Q_INVOKABLE QVariant parentModelIndex() const;

    int count() const;
    bool isValid() const { return delegate() != 0; }
    QSGItem *item(int index, bool complete=true);
    ReleaseFlags release(QSGItem *item);
    bool completePending() const;
    void completeItem();
    virtual QString stringValue(int index, const QString &role);
    virtual void setWatchedRoles(QList<QByteArray> roles);

    int indexOf(QSGItem *item, QObject *objectContext) const;

    QObject *parts();

    bool event(QEvent *);

Q_SIGNALS:
    void createdPackage(int index, QDeclarativePackage *package);
    void destroyingPackage(QDeclarativePackage *package);
    void rootIndexChanged();

private Q_SLOTS:
    void _q_itemsChanged(int index, int count);
    void _q_itemsInserted(int index, int count);
    void _q_itemsRemoved(int index, int count);
    void _q_itemsMoved(int from, int to, int count);
    void _q_modelReset(int oldCount, int newCount);
private:
    Q_DISABLE_COPY(QSGVisualDataModel)
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QSGVisualDataModel)

QT_END_HEADER

#endif // QSGVISUALDATAMODEL_P_H