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//-*-C++-*-
/*
**************************************************************************
description
--------------------
copyright : (C) 2002 by Andreas Zehender
email : zehender@kde.org
**************************************************************************
**************************************************************************
* *
* 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. *
* *
**************************************************************************/
#ifndef PMVARIANT_H
#define PMVARIANT_H
#include <qstring.h>
#include "pmcolor.h"
#include "pmvector.h"
#include "pmthreestate.h"
class PMObject;
/**
* Variant class for KPovModeler.
*
* Can store and convert: int, unsigned int, double, bool,
* PMThreeState, QString, PMVector, PMColor, PMObject*.
*
* Enums are stored as QString.
*
* The variant can store one type at a time. You can try to convert
* the type with the convertTo* methods. These will return bool on success.
* If the variant could not be converted, the old type and value
* did not change.
*/
class PMVariant
{
public:
/**
* Type of stored data
*/
enum PMVariantDataType { Integer, Unsigned, Double, Bool,
ThreeState, String, Vector, Color,
ObjectPointer, None };
/**
* Creates an empty variant object
*/
PMVariant( );
/**
* Stores an integer
*/
PMVariant( int data );
/**
* Stores an unsigned integer
*/
PMVariant( unsigned int data );
/**
* Stores a double
*/
PMVariant( double data );
/**
* Stores a boolean
*/
PMVariant( bool data );
/**
* Stores a @ref PMThreeState
*/
PMVariant( PMThreeState data );
/**
* Stores a string
*/
PMVariant( const QString& data );
/**
* Stores a @ref PMVector
*/
PMVariant( const PMVector& data );
/**
* Stores a @ref PMColor
*/
PMVariant( const PMColor& data );
/**
* Stores a pointer to a PMObject
*/
PMVariant( PMObject* obj );
/**
* Copy constructor
*/
PMVariant( const PMVariant& v );
/**
* Deletes the variant
*/
~PMVariant( );
/**
* Assignment operator
*/
PMVariant& operator= ( const PMVariant& v );
/**
* Returns true if no data is stored
*/
bool isNull( ) const { return !m_pData; }
/**
* Sets the integer value
*/
void setInt( int data );
/**
* Sets the unsigned value
*/
void setUnsigned( unsigned int data );
/**
* Sets the double value
*/
void setDouble( double data );
/**
* Sets the boolean value
*/
void setBool( bool data );
/**
* Sets the PMThreeState value
*/
void setThreeState( PMThreeState data );
/**
* Sets the string data
*/
void setString( const QString& data );
/**
* Sets the vector data
*/
void setVector( const PMVector& data );
/**
* Sets the color data
*/
void setColor( const PMColor& data );
/**
* Sets the object pointer
*/
void setObject( PMObject* o );
/**
* Returns the integer value. Data type has to be Integer!
*/
int intData( ) const;
/**
* Returns the unsigned value. Data type has to be Unsigned!
*/
int unsignedData( ) const;
/**
* Returns the double value. Data type has to be Double!
*/
double doubleData( ) const;
/**
* Returns the boolean value. Data type has to be Bool!
*/
bool boolData( ) const;
/**
* Returns the PMThreeState value. Data type has to be ThreeState!
*/
PMThreeState threeStateData( ) const;
/**
* Returns the string data. Data type has to be String!
*/
QString stringData( ) const;
/**
* Returns the vector data. Data type has to be Vector!
*/
PMVector vectorData( ) const;
/**
* Returns the color data. Data type has to be Color!
*/
PMColor colorData( ) const;
/**
* Returns the object pointer. Data type has to be ObjectPointer!
*/
PMObject* objectData( ) const;
/**
* Converts the variant to an integer. Returns true if possible
*/
bool convertTo( PMVariantDataType t );
/**
* Returns the type of the stored data
*/
PMVariantDataType dataType( ) const { return m_dataType; }
/**
* Returns the value of the stored data in string format
*/
QString asString( ) const;
/**
* Sets the value of the variant based on the string
*/
bool fromString( const PMVariant::PMVariantDataType t, const QString& value );
private:
void clear( );
/**
* a pointer to the stored data
*/
void* m_pData;
/**
* Type of the data
*/
PMVariantDataType m_dataType;
};
// Streaming operators for PMVariant
QDataStream& operator<<( QDataStream& stream, const PMVariant& value );
QDataStream& operator>>( QDataStream& stream, PMVariant& value );
#endif
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