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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtLocation module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef TRAVERSER_H
#define TRAVERSER_H
#include "qplacemanagerengine_jsondb.h"
#include <QtCore/QHash>
#include <QtCore/QJsonObject>
#include <QtCore/QStringList>
#include <QtJsonDb/QJsonDbRequest>
QT_BEGIN_NAMESPACE
class JsonDb;
class CategoryTraverser : public QObject
{
Q_OBJECT
public:
CategoryTraverser(JsonDb *db, QObject *parent = 0);
void start(const QString &rootId = QString());
QList<QJsonObject> results() { return m_catObjs; }
QString errorString() { return m_errorString; }
static CategoryTree convertToTree(const QList<QJsonObject> &catObjects,
const QPlaceManagerEngineJsonDb *engine);
Q_SIGNALS:
void finished();
private slots:
void rootCategoryFinished();
void requestFinished();
void requestError(QtJsonDb::QJsonDbRequest::ErrorCode dbCode,
const QString &dbErrorString);
private:
void processQueue();
QList<QJsonObject> m_catObjs;
JsonDb *m_db;
QString m_rootId;
QStringList m_catIdQueue;
QString m_errorString;
};
QT_END_NAMESPACE
#endif
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