QXmppPubSubBaseItem.h

// SPDX-FileCopyrightText: 2019 Jeremy Lainé <jeremy.laine@m4x.org>
// SPDX-FileCopyrightText: 2019 Linus Jahn <lnj@kaidan.im>
//
// SPDX-License-Identifier: LGPL-2.1-or-later
 
#ifndef QXMPPPUBSUBBASEITEM_H
#define QXMPPPUBSUBBASEITEM_H
 
#include "QXmppGlobal.h"
 
#include <QDomElement>
#include <QMetaType>
#include <QSharedDataPointer>
 
class QXmlStreamWriter;
class QXmppPubSubBaseItemPrivate;
 
class QXMPP_EXPORT QXmppPubSubBaseItem
{
public:
    QXmppPubSubBaseItem(const QString &id = {}, const QString &publisher = {});
    QXmppPubSubBaseItem(const QXmppPubSubBaseItem &) noexcept;
    QXmppPubSubBaseItem(QXmppPubSubBaseItem &&) noexcept;
    virtual ~QXmppPubSubBaseItem() noexcept;
 
    QXmppPubSubBaseItem &operator=(const QXmppPubSubBaseItem &) noexcept;
    QXmppPubSubBaseItem &operator=(QXmppPubSubBaseItem &&) noexcept;
 
    QString id() const;
    void setId(const QString &id);
 
    QString publisher() const;
    void setPublisher(const QString &publisher);

    void parse(const QDomElement &element);
    void toXml(QXmlStreamWriter *writer) const;
 
    static bool isItem(const QDomElement &element);
 
protected:
    virtual void parsePayload(const QDomElement &payloadElement);
    virtual void serializePayload(QXmlStreamWriter *writer) const;
 
    template<typename PayloadChecker>
    static bool isItem(const QDomElement &element, PayloadChecker isPayloadValid);
 
private:
    QSharedDataPointer<QXmppPubSubBaseItemPrivate> d;
};

template<typename PayloadChecker>
bool QXmppPubSubBaseItem::isItem(const QDomElement &element, PayloadChecker isPayloadValid)
{
    if (!isItem(element)) {
        return false;
    }
 
    const QDomElement payload = element.firstChildElement();
 
    // we can only check the payload if it's existant
    if (!payload.isNull()) {
        return isPayloadValid(payload);
    }
    return true;
}
 
Q_DECLARE_METATYPE(QXmppPubSubBaseItem)
 
#endif  // QXMPPPUBSUBBASEITEM_H