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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 QDECLARATIVEXMLLISTMODEL_H
#define QDECLARATIVEXMLLISTMODEL_H
#include <qdeclarative.h>
#include <qdeclarativeinfo.h>
#include <QtCore/qurl.h>
#include <QtCore/qstringlist.h>
#include <private/qlistmodelinterface_p.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QDeclarativeContext;
class QDeclarativeXmlListModelRole;
class QDeclarativeXmlListModelPrivate;
struct QDeclarativeXmlQueryResult {
int queryId;
int size;
QList<QList<QVariant> > data;
QList<QPair<int, int> > inserted;
QList<QPair<int, int> > removed;
QStringList keyRoleResultsCache;
};
class Q_DECLARATIVE_EXPORT QDeclarativeXmlListModel : public QListModelInterface, public QDeclarativeParserStatus
{
Q_OBJECT
Q_INTERFACES(QDeclarativeParserStatus)
Q_ENUMS(Status)
Q_PROPERTY(Status status READ status NOTIFY statusChanged)
Q_PROPERTY(qreal progress READ progress NOTIFY progressChanged)
Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
Q_PROPERTY(QString xml READ xml WRITE setXml NOTIFY xmlChanged)
Q_PROPERTY(QString query READ query WRITE setQuery NOTIFY queryChanged)
Q_PROPERTY(QString namespaceDeclarations READ namespaceDeclarations WRITE setNamespaceDeclarations NOTIFY namespaceDeclarationsChanged)
Q_PROPERTY(QDeclarativeListProperty<QDeclarativeXmlListModelRole> roles READ roleObjects)
Q_PROPERTY(int count READ count NOTIFY countChanged)
Q_CLASSINFO("DefaultProperty", "roles")
public:
QDeclarativeXmlListModel(QObject *parent = 0);
~QDeclarativeXmlListModel();
virtual QHash<int,QVariant> data(int index, const QList<int> &roles = (QList<int>())) const;
virtual QVariant data(int index, int role) const;
virtual int count() const;
virtual QList<int> roles() const;
virtual QString toString(int role) const;
QDeclarativeListProperty<QDeclarativeXmlListModelRole> roleObjects();
QUrl source() const;
void setSource(const QUrl&);
QString xml() const;
void setXml(const QString&);
QString query() const;
void setQuery(const QString&);
QString namespaceDeclarations() const;
void setNamespaceDeclarations(const QString&);
enum Status { Null, Ready, Loading, Error };
Status status() const;
qreal progress() const;
virtual void classBegin();
virtual void componentComplete();
Q_SIGNALS:
void statusChanged(QDeclarativeXmlListModel::Status);
void progressChanged(qreal progress);
void countChanged();
void sourceChanged();
void xmlChanged();
void queryChanged();
void namespaceDeclarationsChanged();
public Q_SLOTS:
// ### need to use/expose Expiry to guess when to call this?
// ### property to auto-call this on reasonable Expiry?
// ### LastModified/Age also useful to guess.
// ### Probably also applies to other network-requesting types.
void reload();
private Q_SLOTS:
void requestFinished();
void requestProgress(qint64,qint64);
void dataCleared();
void queryCompleted(const QDeclarativeXmlQueryResult &);
private:
Q_DECLARE_PRIVATE(QDeclarativeXmlListModel)
Q_DISABLE_COPY(QDeclarativeXmlListModel)
};
class Q_DECLARATIVE_EXPORT QDeclarativeXmlListModelRole : public QObject
{
Q_OBJECT
Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
Q_PROPERTY(QString query READ query WRITE setQuery NOTIFY queryChanged)
Q_PROPERTY(bool isKey READ isKey WRITE setIsKey NOTIFY isKeyChanged)
public:
QDeclarativeXmlListModelRole() : m_isKey(false) {}
~QDeclarativeXmlListModelRole() {}
QString name() const { return m_name; }
void setName(const QString &name) {
if (name == m_name)
return;
m_name = name;
emit nameChanged();
}
QString query() const { return m_query; }
void setQuery(const QString &query)
{
if (query.startsWith(QLatin1Char('/'))) {
qmlInfo(this) << tr("An XmlRole query must not start with '/'");
return;
}
if (m_query == query)
return;
m_query = query;
emit queryChanged();
}
bool isKey() const { return m_isKey; }
void setIsKey(bool b) {
if (m_isKey == b)
return;
m_isKey = b;
emit isKeyChanged();
}
bool isValid() {
return !m_name.isEmpty() && !m_query.isEmpty();
}
Q_SIGNALS:
void nameChanged();
void queryChanged();
void isKeyChanged();
private:
QString m_name;
QString m_query;
bool m_isKey;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QDeclarativeXmlListModel)
QML_DECLARE_TYPE(QDeclarativeXmlListModelRole)
QT_END_HEADER
#endif // QDECLARATIVEXMLLISTMODEL_H
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