uargs.hpp

/* ==================================================== ======== ======= *
 *
 *  uargs.hpp : additive arglists.
 *  Part of the Ubit GUI Toolkit
 *  (C) 1999-2005 Eric Lecolinet / ENST Paris / http://www.enst.fr/~elc/ubit
 *
 * ***********************************************************************
 * COPYRIGHT NOTICE : 
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY AND WITHOUT EVEN THE 
 * IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 
 * 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.
 * SEE FILES 'COPYRIGHT' AND 'COPYING' FOR MORE DETAILS.
 * ***********************************************************************
 * ==================================================== [(c)Elc] ======= *
 * ==================================================== ======== ======= */

#ifndef _uargs_hpp_
#define _uargs_hpp_
//pragma ident  "@(#)uargs.hpp  ubit:05.05.00"
#include <ubit/ubrick.hpp>
namespace ubit {

class UArgsImpl;

class UArgsList : public UChildren {
  friend class UArgs;
  friend class UArgsImpl;
  int refcount;
};

/* ==================================================== ======== ======= */
class UArgs {
public:
  static const UArgs none;

  UArgs();
  ~UArgs();
  UArgs(const UArgs&);
  UArgs(const UArgsImpl&);
  UArgs(const char*);
  UArgs(UBrick*);
  UArgs(UBrick&);
  UArgs(const UChild&);

  UArgs& operator+=(const UArgs&);
  friend const UArgsImpl& operator+(const UArgsImpl&, const char*);
  friend const UArgsImpl& operator+(const UArgsImpl&, UBrick*);
  friend const UArgsImpl& operator+(const UArgsImpl&, UBrick&);
  friend const UArgsImpl& operator+(const UArgsImpl&, const UChild&);
  friend const UArgsImpl& operator+(const UArgsImpl&, const UArgs&);

//private:
  UArgsList* children;
private:
  friend class UGroup;
  friend class UBox;
  friend class UArgsImpl;
  UArgs& operator=(const UArgs&);  
};

/* ==================================================== ======== ======= */
// implementation of UArgs (should not be used directly by clients).

class UArgsImpl {
public:
  UArgsImpl();
  ~UArgsImpl();
  UArgsImpl(const UArgsImpl&);
  UArgsImpl(const UArgs&);
  UArgsImpl(const char*);
  UArgsImpl(UBrick*);
  UArgsImpl(UBrick&);
  UArgsImpl(const UChild&);
  
  friend const UArgsImpl& operator+(const UArgsImpl&, const char*);
  friend const UArgsImpl& operator+(const UArgsImpl&, UBrick*);
  friend const UArgsImpl& operator+(const UArgsImpl&, UBrick&);
  friend const UArgsImpl& operator+(const UArgsImpl&, const UChild&);
  friend const UArgsImpl& operator+(const UArgsImpl&, const UArgs&);

private:
  friend class UGroup;
  friend class UBox;
  friend class UArgs;
  UArgsImpl& operator=(const UArgsImpl&);  // assigment is forbidden
  UArgsList* children;
};

}
#endif
/* ==================================================== [TheEnd] ======= */
/* ==================================================== [(c)Elc] ======= */

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