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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 QDECLARATIVEVISUALDATAMODEL_H
#define QDECLARATIVEVISUALDATAMODEL_H
#include <qdeclarative.h>
#include <QtCore/qobject.h>
#include <QtCore/qabstractitemmodel.h>
QT_BEGIN_HEADER
Q_DECLARE_METATYPE(QModelIndex)
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
/*****************************************************************************
*****************************************************************************
XXX Experimental
*****************************************************************************
*****************************************************************************/
class QDeclarativeItem;
class QDeclarativeComponent;
class QDeclarativePackage;
class QDeclarativeVisualDataModelPrivate;
class Q_DECLARATIVE_EXPORT QDeclarativeVisualModel : public QObject
{
Q_OBJECT
Q_PROPERTY(int count READ count NOTIFY countChanged)
public:
QDeclarativeVisualModel() {}
virtual ~QDeclarativeVisualModel() {}
enum ReleaseFlag { Referenced = 0x01, Destroyed = 0x02 };
Q_DECLARE_FLAGS(ReleaseFlags, ReleaseFlag)
virtual int count() const = 0;
virtual bool isValid() const = 0;
virtual QDeclarativeItem *item(int index, bool complete=true) = 0;
virtual ReleaseFlags release(QDeclarativeItem *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(QDeclarativeItem *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 modelReset();
void createdItem(int index, QDeclarativeItem *item);
void destroyingItem(QDeclarativeItem *item);
protected:
QDeclarativeVisualModel(QObjectPrivate &dd, QObject *parent = 0)
: QObject(dd, parent) {}
private:
Q_DISABLE_COPY(QDeclarativeVisualModel)
};
class QDeclarativeVisualItemModelAttached;
class QDeclarativeVisualItemModelPrivate;
class Q_DECLARATIVE_EXPORT QDeclarativeVisualItemModel : public QDeclarativeVisualModel
{
Q_OBJECT
Q_DECLARE_PRIVATE(QDeclarativeVisualItemModel)
Q_PROPERTY(QDeclarativeListProperty<QDeclarativeItem> children READ children NOTIFY childrenChanged DESIGNABLE false)
Q_CLASSINFO("DefaultProperty", "children")
public:
QDeclarativeVisualItemModel();
virtual ~QDeclarativeVisualItemModel() {}
virtual int count() const;
virtual bool isValid() const;
virtual QDeclarativeItem *item(int index, bool complete=true);
virtual ReleaseFlags release(QDeclarativeItem *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(QDeclarativeItem *item, QObject *objectContext) const;
QDeclarativeListProperty<QDeclarativeItem> children();
static QDeclarativeVisualItemModelAttached *qmlAttachedProperties(QObject *obj);
Q_SIGNALS:
void childrenChanged();
private:
Q_DISABLE_COPY(QDeclarativeVisualItemModel)
};
class Q_DECLARATIVE_EXPORT QDeclarativeVisualDataModel : public QDeclarativeVisualModel
{
Q_OBJECT
Q_DECLARE_PRIVATE(QDeclarativeVisualDataModel)
Q_PROPERTY(QVariant model READ model WRITE setModel)
Q_PROPERTY(QDeclarativeComponent *delegate READ delegate WRITE setDelegate)
Q_PROPERTY(QString part READ part WRITE setPart)
Q_PROPERTY(QObject *parts READ parts CONSTANT)
Q_PROPERTY(QVariant rootIndex READ rootIndex WRITE setRootIndex NOTIFY rootIndexChanged)
Q_CLASSINFO("DefaultProperty", "delegate")
public:
QDeclarativeVisualDataModel();
QDeclarativeVisualDataModel(QDeclarativeContext *);
virtual ~QDeclarativeVisualDataModel();
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;
QString part() const;
void setPart(const QString &);
int count() const;
bool isValid() const { return delegate() != 0; }
QDeclarativeItem *item(int index, bool complete=true);
QDeclarativeItem *item(int index, const QByteArray &, bool complete=true);
ReleaseFlags release(QDeclarativeItem *item);
void completeItem();
virtual QString stringValue(int index, const QString &role);
QVariant evaluate(int index, const QString &expression, QObject *objectContext);
int indexOf(QDeclarativeItem *item, QObject *objectContext) const;
QObject *parts();
Q_SIGNALS:
void createdPackage(int index, QDeclarativePackage *package);
void destroyingPackage(QDeclarativePackage *package);
void rootIndexChanged();
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_modelReset();
void _q_createdPackage(int index, QDeclarativePackage *package);
void _q_destroyingPackage(QDeclarativePackage *package);
private:
Q_DISABLE_COPY(QDeclarativeVisualDataModel)
};
class QDeclarativeVisualItemModelAttached : public QObject
{
Q_OBJECT
public:
QDeclarativeVisualItemModelAttached(QObject *parent)
: QObject(parent), m_index(0) {}
~QDeclarativeVisualItemModelAttached() {
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 QDeclarativeVisualItemModelAttached *properties(QObject *obj) {
QDeclarativeVisualItemModelAttached *rv = attachedProperties.value(obj);
if (!rv) {
rv = new QDeclarativeVisualItemModelAttached(obj);
attachedProperties.insert(obj, rv);
}
return rv;
}
Q_SIGNALS:
void indexChanged();
public:
int m_index;
static QHash<QObject*, QDeclarativeVisualItemModelAttached*> attachedProperties;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QDeclarativeVisualModel)
QML_DECLARE_TYPE(QDeclarativeVisualItemModel)
QML_DECLARE_TYPEINFO(QDeclarativeVisualItemModel, QML_HAS_ATTACHED_PROPERTIES)
QML_DECLARE_TYPE(QDeclarativeVisualDataModel)
QT_END_HEADER
#endif // QDECLARATIVEVISUALDATAMODEL_H
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