/******************************************************************************** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.**** This file is part of the QtCore module of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 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 GNU** General Public Licensing requirements will be met:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#ifndef QABSTRACTITEMMODEL_P_H#define QABSTRACTITEMMODEL_P_H////  W A R N I N G//  -------------//// This file is not part of the Qt API.  It exists for the convenience// of QAbstractItemModel*.  This header file may change from version// to version without notice, or even be removed.//// We mean it.////#include "private/qobject_p.h"#include "QtCore/qstack.h"class Q_CORE_EXPORT QPersistentModelIndexData{public:    QPersistentModelIndexData() : model (0) {}    QModelIndex index;    QAtomic ref;    const QAbstractItemModel *model;    static QPersistentModelIndexData *create(const QModelIndex &index);    static void destroy(QPersistentModelIndexData *data);};class Q_CORE_EXPORT QAbstractItemModelPrivate : public QObjectPrivate{    Q_DECLARE_PUBLIC(QAbstractItemModel)public:    QAbstractItemModelPrivate() : QObjectPrivate(), supportedDragActions(-1) {}    void removePersistentIndexData(QPersistentModelIndexData *data);    void invalidate(int position);    void rowsAboutToBeInserted(const QModelIndex &parent, int first, int last);    void rowsInserted(const QModelIndex &parent, int first, int last);    void rowsAboutToBeRemoved(const QModelIndex &parent, int first, int last);    void rowsRemoved(const QModelIndex &parent, int first, int last);    void columnsAboutToBeInserted(const QModelIndex &parent, int first, int last);    void columnsInserted(const QModelIndex &parent, int first, int last);    void columnsAboutToBeRemoved(const QModelIndex &parent, int first, int last);    void columnsRemoved(const QModelIndex &parent, int first, int last);    void reset();    static QAbstractItemModel *staticEmptyModel();    inline QModelIndex createIndex(int row, int column, void *data = 0) const {        return q_func()->createIndex(row, column, data);    }    inline QModelIndex createIndex(int row, int column, int id) const {        return q_func()->createIndex(row, column, id);    }    inline bool indexValid(const QModelIndex &index) const {         return (index.row() >= 0) && (index.column() >= 0) && (index.model() == q_func());     }    inline void invalidatePersistentIndexes() {        QList<QPersistentModelIndexData*>::iterator it = persistent.indexes.begin();        for (; it != persistent.indexes.end(); ++it) {            Q_ASSERT((*it));            (*it)->index = QModelIndex();            (*it)->model = 0;        }    }    struct Change {        Change() : first(-1), last(-1) {}        Change(const Change &c) : parent(c.parent), first(c.first), last(c.last) {}        Change(const QModelIndex &p, int f, int l) : parent(p), first(f), last(l) {}        QModelIndex parent;        int first, last;    };    QStack<Change> changes;    struct Persistent {        QList<QPersistentModelIndexData*> indexes;        QStack<QList<int> > moved;        QStack<QList<int> > invalidated;    } persistent;    Qt::DropActions supportedDragActions;};#endif // QABSTRACTITEMMODEL_P_H