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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLGRAPHICSVISUALDATAMODEL_H
+#define QMLGRAPHICSVISUALDATAMODEL_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qabstractitemmodel.h>
+#include <QtDeclarative/qml.h>
+
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+/*****************************************************************************
+ *****************************************************************************
+ XXX Experimental
+ *****************************************************************************
+*****************************************************************************/
+
+class QmlGraphicsItem;
+class QmlComponent;
+class QmlPackage;
+class QmlGraphicsVisualDataModelPrivate;
+
+class Q_DECLARATIVE_EXPORT QmlGraphicsVisualModel : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(int count READ count NOTIFY countChanged)
+
+public:
+    QmlGraphicsVisualModel() {}
+    virtual ~QmlGraphicsVisualModel() {}
+
+    enum ReleaseFlag { Referenced = 0x01, Destroyed = 0x02 };
+    Q_DECLARE_FLAGS(ReleaseFlags, ReleaseFlag)
+
+    virtual int count() const = 0;
+    virtual bool isValid() const = 0;
+    virtual QmlGraphicsItem *item(int index, bool complete=true) = 0;
+    virtual ReleaseFlags release(QmlGraphicsItem *item) = 0;
+    virtual void completeItem() = 0;
+    virtual QVariant evaluate(int index, const QString &expression, QObject *objectContext) = 0;
+
+    virtual int indexOf(QmlGraphicsItem *item, QObject *objectContext) const = 0;
+
+Q_SIGNALS:
+    void countChanged();
+    void itemsInserted(int index, int count);
+    void itemsRemoved(int index, int count);
+    void itemsMoved(int from, int to, int count);
+    void createdItem(int index, QmlGraphicsItem *item);
+    void destroyingItem(QmlGraphicsItem *item);
+
+protected:
+    QmlGraphicsVisualModel(QObjectPrivate &dd, QObject *parent = 0)
+        : QObject(dd, parent) {}
+
+private:
+    Q_DISABLE_COPY(QmlGraphicsVisualModel)
+};
+
+class QmlGraphicsVisualItemModelAttached;
+class QmlGraphicsVisualItemModelPrivate;
+class Q_DECLARATIVE_EXPORT QmlGraphicsVisualItemModel : public QmlGraphicsVisualModel
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QmlGraphicsVisualItemModel)
+
+    Q_PROPERTY(QmlList<QmlGraphicsItem *>* children READ children NOTIFY childrenChanged DESIGNABLE false)
+    Q_CLASSINFO("DefaultProperty", "children")
+
+public:
+    QmlGraphicsVisualItemModel();
+    virtual ~QmlGraphicsVisualItemModel() {}
+
+    virtual int count() const;
+    virtual bool isValid() const;
+    virtual QmlGraphicsItem *item(int index, bool complete=true);
+    virtual ReleaseFlags release(QmlGraphicsItem *item);
+    virtual void completeItem();
+    virtual QVariant evaluate(int index, const QString &expression, QObject *objectContext);
+
+    virtual int indexOf(QmlGraphicsItem *item, QObject *objectContext) const;
+
+    QmlList<QmlGraphicsItem *> *children();
+
+    static QmlGraphicsVisualItemModelAttached *qmlAttachedProperties(QObject *obj);
+
+signals:
+    void childrenChanged();
+
+private:
+    Q_DISABLE_COPY(QmlGraphicsVisualItemModel)
+};
+
+
+class Q_DECLARATIVE_EXPORT QmlGraphicsVisualDataModel : public QmlGraphicsVisualModel
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QmlGraphicsVisualDataModel)
+
+    Q_PROPERTY(QVariant model READ model WRITE setModel)
+    Q_PROPERTY(QmlComponent *delegate READ delegate WRITE setDelegate)
+    Q_PROPERTY(QString part READ part WRITE setPart)
+    Q_PROPERTY(QObject *parts READ parts CONSTANT)
+    Q_CLASSINFO("DefaultProperty", "delegate")
+public:
+    QmlGraphicsVisualDataModel();
+    QmlGraphicsVisualDataModel(QmlContext *);
+    virtual ~QmlGraphicsVisualDataModel();
+
+    QVariant model() const;
+    void setModel(const QVariant &);
+
+    QmlComponent *delegate() const;
+    void setDelegate(QmlComponent *);
+
+    QString part() const;
+    void setPart(const QString &);
+
+    int count() const;
+    bool isValid() const { return delegate() != 0; }
+    QmlGraphicsItem *item(int index, bool complete=true);
+    QmlGraphicsItem *item(int index, const QByteArray &, bool complete=true);
+    ReleaseFlags release(QmlGraphicsItem *item);
+    void completeItem();
+    QVariant evaluate(int index, const QString &expression, QObject *objectContext);
+
+    int indexOf(QmlGraphicsItem *item, QObject *objectContext) const;
+
+    QObject *parts();
+
+Q_SIGNALS:
+    void createdPackage(int index, QmlPackage *package);
+    void destroyingPackage(QmlPackage *package);
+
+private Q_SLOTS:
+    void _q_itemsChanged(int, int, const QList<int> &);
+    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_rowsInserted(const QModelIndex &,int,int);
+    void _q_rowsRemoved(const QModelIndex &,int,int);
+    void _q_dataChanged(const QModelIndex&,const QModelIndex&);
+    void _q_createdPackage(int index, QmlPackage *package);
+    void _q_destroyingPackage(QmlPackage *package);
+
+private:
+    Q_DISABLE_COPY(QmlGraphicsVisualDataModel)
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QmlGraphicsVisualModel)
+QML_DECLARE_TYPE(QmlGraphicsVisualItemModel)
+QML_DECLARE_TYPEINFO(QmlGraphicsVisualItemModel, QML_HAS_ATTACHED_PROPERTIES)
+QML_DECLARE_TYPE(QmlGraphicsVisualDataModel)
+
+QT_END_HEADER
+
+#endif // QMLGRAPHICSVISUALDATAMODEL_H