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/****************************************************************************
**
** Copyright (C) 2010 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMLGRAPHICSVISUALDATAMODEL_H
#define QMLGRAPHICSVISUALDATAMODEL_H
#include <qml.h>
#include <QtCore/qobject.h>
#include <QtCore/qabstractitemmodel.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 QString stringValue(int, const QString &) { return QString(); }
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(QmlListProperty<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 QString stringValue(int index, const QString &role);
virtual QVariant evaluate(int index, const QString &expression, QObject *objectContext);
virtual int indexOf(QmlGraphicsItem *item, QObject *objectContext) const;
QmlListProperty<QmlGraphicsItem> children();
static QmlGraphicsVisualItemModelAttached *qmlAttachedProperties(QObject *obj);
Q_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();
virtual QString stringValue(int index, const QString &role);
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_rowsMoved(const QModelIndex &, int, int, const QModelIndex &, 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)
};
class QmlGraphicsVisualItemModelAttached : public QObject
{
Q_OBJECT
public:
QmlGraphicsVisualItemModelAttached(QObject *parent)
: QObject(parent), m_index(0) {}
~QmlGraphicsVisualItemModelAttached() {
attachedProperties.remove(parent());
}
Q_PROPERTY(int index READ index NOTIFY indexChanged)
int index() const { return m_index; }
void setIndex(int idx) {
if (m_index != idx) {
m_index = idx;
emit indexChanged();
}
}
static QmlGraphicsVisualItemModelAttached *properties(QObject *obj) {
QmlGraphicsVisualItemModelAttached *rv = attachedProperties.value(obj);
if (!rv) {
rv = new QmlGraphicsVisualItemModelAttached(obj);
attachedProperties.insert(obj, rv);
}
return rv;
}
Q_SIGNALS:
void indexChanged();
public:
int m_index;
static QHash<QObject*, QmlGraphicsVisualItemModelAttached*> attachedProperties;
};
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
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