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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 QLISTMODELINTERFACE_H
#define QLISTMODELINTERFACE_H
#include <QHash>
#include <QVariant>
#include <qfxglobal.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
/*!
\class QListModelInterface
\brief The QListModelInterface class can be subclassed to provide C++ models to QFx Views
This class is comprised primarily of pure virtual functions which you need to implement in a subclass. You can then use the subclass as a model for a QFx view, such as a QFxListView.
*/
class Q_DECLARATIVE_EXPORT QListModelInterface : public QObject
{
Q_OBJECT
public:
QListModelInterface(QObject *parent = 0) : QObject(parent) {}
virtual ~QListModelInterface() {}
// ### move these into the Qt namespace
enum Roles {
TextRole = Qt::DisplayRole,
IconRole = Qt::DecorationRole
};
/*!
Returns the number of data entries in the model.
*/
virtual int count() const = 0;
/*!
Returns the data at the given \a index for the specifed \a roles.
*/
virtual QHash<int,QVariant> data(int index, const QList<int> &roles = (QList<int>())) const = 0;
/*!
Sets the data at the given \a index.\a values is a mapping of QVariant values to roles.
*/
virtual bool setData(int index, const QHash<int,QVariant> &values) { Q_UNUSED(index); Q_UNUSED(values); return false; }
/*!
This convinience function can be used to set the data for one specific role. It internally uses the other setData and does not need to be reimplemented.
*/
inline bool setData(int index, const QVariant &value, int role)
{
QHash<int,QVariant> values;
values.insert(role, value);
return setData(index, values);
}
/*!
Returns which roles the list provides data for.
*/
virtual QList<int> roles() const = 0;
/*!
Returns a string description of the specified \a role.
*/
virtual QString toString(int role) const = 0;
//void bind(int index, int role, QObject *object, const char *propertyName, bool readOnly = true);
Q_SIGNALS:
void itemsInserted(int index, int count);
void itemsRemoved(int index, int count);
void itemsMoved(int from, int to, int count);
void itemsChanged(int index, int count, const QList<int> &roles);
protected:
QListModelInterface(QObjectPrivate &dd, QObject *parent) : QObject(dd, parent) {}
};
QT_END_NAMESPACE
QT_END_HEADER
#endif //QTREEMODELINTERFACE_H
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