qdbusmessage.h

QT 开发环境里面一个很重要的文件

/****************************************************************************
**
** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the tools applications of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 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 GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at [e-mail].
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef QDBUSMESSAGE_H
#define QDBUSMESSAGE_H

#include <QtDBus/qdbusmacros.h>
#include <QtDBus/qdbuserror.h>
#include <QtCore/qlist.h>
#include <QtCore/qvariant.h>

QT_BEGIN_HEADER

class QDBusMessagePrivate;
class QDBUS_EXPORT QDBusMessage
{
public:
    enum MessageType {
        InvalidMessage,
        MethodCallMessage,
        ReplyMessage,
        ErrorMessage,
        SignalMessage
    };

    QDBusMessage();
    QDBusMessage(const QDBusMessage &other);
    QDBusMessage &operator=(const QDBusMessage &other);
    ~QDBusMessage();

    static QDBusMessage createSignal(const QString &path, const QString &interface,
                                     const QString &name);
    static QDBusMessage createMethodCall(const QString &destination, const QString &path,
                                         const QString &interface, const QString &method);
    static QDBusMessage createError(const QString &name, const QString &msg);
    static inline QDBusMessage createError(const QDBusError &err)
    { return createError(err.name(), err.message()); }

    QDBusMessage createReply(const QList<QVariant> &arguments = QList<QVariant>()) const;
    inline QDBusMessage createReply(const QVariant &argument) const
    { return createReply(QList<QVariant>() << argument); }

    QDBusMessage createErrorReply(const QString name, const QString &msg) const;
    inline QDBusMessage createErrorReply(const QDBusError &err) const
    { return createErrorReply(err.name(), err.message()); }

    QString service() const;
    QString path() const;
    QString interface() const;
    QString member() const;
    QString errorName() const;
    MessageType type() const;
    QString signature() const;

    bool isReplyRequired() const;

    void setDelayedReply(bool enable) const;
    bool isDelayedReply() const;

    void setArguments(const QList<QVariant> &arguments);
    QList<QVariant> arguments() const;

    QDBusMessage &operator<<(const QVariant &arg);

private:
#ifndef Q_QDOC
    template<typename T> inline QVariant qvfv(const T &t);
#ifndef QT_NO_CAST_FROM_ASCII
    inline QVariant qvfv(const char *t)
    { return QVariant(t); }
#endif
#endif

    friend class QDBusConnectionPrivate; // ### remove me; just for debugging
    friend class QDBusMessagePrivate;
    QDBusMessagePrivate *d_ptr;
};

#ifndef QT_NO_DEBUG_STREAM
QDBUS_EXPORT QDebug operator<<(QDebug, const QDBusMessage &);
#endif

QT_END_HEADER

#endif