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/*
* FeatureMessage.h - header for a message encapsulation class for features
*
* Copyright (c) 2017-2019 Tobias Junghans <tobydox@veyon.io>
*
* This file is part of Veyon - http://veyon.io
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#ifndef FEATURE_MESSAGE_H
#define FEATURE_MESSAGE_H
#include <QVariant>
#include "Feature.h"
class QIODevice;
class VEYON_CORE_EXPORT FeatureMessage
{
public:
typedef quint32 MessageSize;
typedef Feature::Uid FeatureUid;
typedef qint32 Command;
typedef QMap<QString, QVariant> Arguments;
enum SpecialCommands
{
DefaultCommand = 0,
InvalidCommand = -1,
InitCommand = -2,
};
explicit FeatureMessage( QIODevice* ioDevice = nullptr ) :
m_ioDevice( ioDevice ),
m_featureUid(),
m_command( InvalidCommand ),
m_arguments()
{
}
explicit FeatureMessage( FeatureUid featureUid, Command command ) :
m_ioDevice( nullptr ),
m_featureUid( featureUid ),
m_command( command ),
m_arguments()
{
}
explicit FeatureMessage( const FeatureMessage& other ) :
m_ioDevice( other.ioDevice() ),
m_featureUid( other.featureUid() ),
m_command( other.command() ),
m_arguments( other.arguments() )
{
}
~FeatureMessage() {}
FeatureMessage& operator=( const FeatureMessage& other )
{
m_ioDevice = other.ioDevice();
m_featureUid = other.featureUid();
m_command = other.command();
m_arguments = other.arguments();
return *this;
}
const FeatureUid& featureUid() const
{
return m_featureUid;
}
Command command() const
{
return m_command;
}
const Arguments& arguments() const
{
return m_arguments;
}
FeatureMessage &addArgument( int index, const QVariant& value )
{
m_arguments[QString::number(index)] = value;
return *this;
}
QVariant argument( int index ) const
{
return m_arguments[QString::number(index)];
}
bool hasArgument( int index ) const
{
return m_arguments.contains( QString::number( index ) );
}
bool send();
bool send( QIODevice* ioDevice ) const;
bool isReadyForReceive();
bool receive();
QIODevice* ioDevice() const
{
return m_ioDevice;
}
private:
QIODevice* m_ioDevice;
FeatureUid m_featureUid;
Command m_command;
Arguments m_arguments;
} ;
#endif // FEATURE_MESSAGE_H
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