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/*
* Configuration/Property.h - Configuration::Property class
*
* Copyright (c) 2019-2021 Tobias Junghans <tobydox@veyon.io>
*
* This file is part of Veyon - https://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.
*
*/
#pragma once
#include <QUuid>
#include "QtCompat.h"
#include "VeyonCore.h"
#include "Configuration/Password.h"
namespace Configuration
{
class Object;
class Proxy;
template<typename T, typename = void> struct CheapestType { using Type = const T &; };
template<typename T> struct CheapestType<T, typename std::enable_if<std::is_enum<T>::value >::type> { using Type = T; };
template<> struct CheapestType<bool> { using Type = bool; };
template<> struct CheapestType<quint8> { using Type = quint8; };
template<> struct CheapestType<quint16> { using Type = quint16; };
template<> struct CheapestType<quint32> { using Type = quint32; };
template<> struct CheapestType<quint64> { using Type = quint64; };
template<> struct CheapestType<qint8> { using Type = qint8; };
template<> struct CheapestType<qint16> { using Type = qint16; };
template<> struct CheapestType<qint32> { using Type = qint32; };
template<> struct CheapestType<qint64> { using Type = qint64; };
template<> struct CheapestType<float> { using Type = float; };
template<> struct CheapestType<double> { using Type = double; };
template<> struct CheapestType<QUuid> { using Type = QUuid; };
template<typename T> struct CheapestType<T *> { using Type = T *; };
class VEYON_CORE_EXPORT Property : public QObject
{
Q_OBJECT
public:
enum class Flag
{
Standard = 0x01,
Advanced = 0x02,
Hidden = 0x04,
Legacy = 0x08
};
Q_DECLARE_FLAGS(Flags, Flag)
// work around QTBUG-47652 where Q_FLAG() is broken for enum classes when using Qt < 5.12
#if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
Q_FLAG(Flags)
#endif
Property( Object* object, const QString& key, const QString& parentKey,
const QVariant& defaultValue, Flags flags );
Property( Proxy* proxy, const QString& key, const QString& parentKey,
const QVariant& defaultValue, Flags flags );
QObject* lambdaContext() const;
QVariant variantValue() const;
void setVariantValue( const QVariant& value ) const;
static Property* find( QObject* parent, const QString& key, const QString& parentKey );
const QString& key() const
{
return m_key;
}
const QString& parentKey() const
{
return m_parentKey;
}
QString absoluteKey() const
{
if( m_parentKey.isEmpty() )
{
return m_key;
}
return m_parentKey + QLatin1Char('/') + m_key;
}
const QVariant& defaultValue() const
{
return m_defaultValue;
}
Flags flags() const
{
return m_flags;
}
private:
Object* m_object;
Proxy* m_proxy;
const QString m_key;
const QString m_parentKey;
const QVariant m_defaultValue;
const Flags m_flags;
};
template<class T>
class VEYON_CORE_EXPORT TypedProperty : public Property {
public:
using Type = typename CheapestType<T>::Type;
TypedProperty( Object* object, const QString& key, const QString& parentKey,
const QVariant& defaultValue, Flags flags ) :
Property( object, key, parentKey, defaultValue, flags )
{
}
TypedProperty( Proxy* proxy, const QString& key, const QString& parentKey,
const QVariant& defaultValue, Flags flags ) :
Property( proxy, key, parentKey, defaultValue, flags )
{
}
T value() const
{
return QVariantHelper<T>::value( variantValue() );
}
void setValue( Type value ) const
{
setVariantValue( QVariant::fromValue( value ) );
}
};
template<>
VEYON_CORE_EXPORT Password TypedProperty<Password>::value() const;
template<>
VEYON_CORE_EXPORT void TypedProperty<Password>::setValue( const Password& value ) const;
#define DECLARE_CONFIG_PROPERTY(className,config,type, name, setter, key, parentKey, defaultValue, flags) \
private: \
const Configuration::TypedProperty<type>* m_##name{ new Configuration::TypedProperty<type>( this, QStringLiteral(key), QStringLiteral(parentKey), defaultValue, flags ) }; \
public: \
type name() const \
{ \
return m_##name->value(); \
} \
const Configuration::TypedProperty<type>& name##Property() const \
{ \
return *m_##name; \
} \
void setter( Configuration::TypedProperty<type>::Type value ) const \
{ \
m_##name->setValue( value ); \
}
}
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