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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKVISUALITEMMODEL_P_H
#define QQUICKVISUALITEMMODEL_P_H
#include <private/qtquickglobal_p.h>
#include <QtQml/qqml.h>
#include <QtCore/qobject.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
class QQuickItem;
class QQuickChangeSet;
class Q_QUICK_PRIVATE_EXPORT QQuickVisualModel : public QObject
{
Q_OBJECT
Q_PROPERTY(int count READ count NOTIFY countChanged)
public:
virtual ~QQuickVisualModel() {}
enum ReleaseFlag { Referenced = 0x01, Destroyed = 0x02 };
Q_DECLARE_FLAGS(ReleaseFlags, ReleaseFlag)
virtual int count() const = 0;
virtual bool isValid() const = 0;
virtual QQuickItem *item(int index, bool asynchronous=false) = 0;
virtual ReleaseFlags release(QQuickItem *item) = 0;
virtual void cancel(int) {}
virtual QString stringValue(int, const QString &) = 0;
virtual void setWatchedRoles(QList<QByteArray> roles) = 0;
virtual int indexOf(QQuickItem *item, QObject *objectContext) const = 0;
Q_SIGNALS:
void countChanged();
void modelUpdated(const QQuickChangeSet &changeSet, bool reset);
void createdItem(int index, QQuickItem *item);
void initItem(int index, QQuickItem *item);
void destroyingItem(QQuickItem *item);
protected:
QQuickVisualModel(QObjectPrivate &dd, QObject *parent = 0)
: QObject(dd, parent) {}
private:
Q_DISABLE_COPY(QQuickVisualModel)
};
class QQuickVisualItemModelAttached;
class QQuickVisualItemModelPrivate;
class Q_QUICK_PRIVATE_EXPORT QQuickVisualItemModel : public QQuickVisualModel
{
Q_OBJECT
Q_DECLARE_PRIVATE(QQuickVisualItemModel)
Q_PROPERTY(QQmlListProperty<QQuickItem> children READ children NOTIFY childrenChanged DESIGNABLE false)
Q_CLASSINFO("DefaultProperty", "children")
public:
QQuickVisualItemModel(QObject *parent=0);
virtual ~QQuickVisualItemModel() {}
virtual int count() const;
virtual bool isValid() const;
virtual QQuickItem *item(int index, bool asynchronous=false);
virtual ReleaseFlags release(QQuickItem *item);
virtual QString stringValue(int index, const QString &role);
virtual void setWatchedRoles(QList<QByteArray>) {}
virtual int indexOf(QQuickItem *item, QObject *objectContext) const;
QQmlListProperty<QQuickItem> children();
static QQuickVisualItemModelAttached *qmlAttachedProperties(QObject *obj);
Q_SIGNALS:
void childrenChanged();
private:
Q_DISABLE_COPY(QQuickVisualItemModel)
};
class QQuickVisualItemModelAttached : public QObject
{
Q_OBJECT
public:
QQuickVisualItemModelAttached(QObject *parent)
: QObject(parent), m_index(0) {}
~QQuickVisualItemModelAttached() {
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 QQuickVisualItemModelAttached *properties(QObject *obj) {
QQuickVisualItemModelAttached *rv = attachedProperties.value(obj);
if (!rv) {
rv = new QQuickVisualItemModelAttached(obj);
attachedProperties.insert(obj, rv);
}
return rv;
}
Q_SIGNALS:
void indexChanged();
public:
int m_index;
static QHash<QObject*, QQuickVisualItemModelAttached*> attachedProperties;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QQuickVisualModel)
QML_DECLARE_TYPE(QQuickVisualItemModel)
QML_DECLARE_TYPEINFO(QQuickVisualItemModel, QML_HAS_ATTACHED_PROPERTIES)
QT_END_HEADER
#endif // QQUICKVISUALITEMMODEL_P_H
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