tag_win.cpp

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#ifndef TAG_WIN_IMPLEMENTATION_FILE
#define TAG_WIN_IMPLEMENTATION_FILE

/*****************************************************************************\
*                                                                             *
*  Name   : Chris Koeritz                                                     *
*  Author : tag & tagged_window                                               *
*                                                                             *
*******************************************************************************
* Copyright (c) 1996-$now By Author.  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 is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "tag_win.h"

#include <basis/convert_utf.h>

tag::tag(const istring &name)
#ifdef __WIN32__
: atom(NIL)
#else
: atom_l(NIL), atom_h(NIL)
#endif
{ create(name); }

tag::tag(const tag &to_copy)
#ifdef __WIN32__
: atom(NIL)
#else
: atom_l(NIL), atom_h(NIL)
#endif
{ *this = to_copy; }

tag::~tag() { whack(); }

tag &tag::operator = (const tag &to_copy)
{
  if (this == &to_copy) return *this;
  whack();
  create(to_copy.name());
  return *this;
}

void tag::create(const istring &name)
{
  my_name = name;
#ifdef __WIN32__
  atom = AddAtom(to_unicode_temp(name));
#else
  atom_h = AddAtom(to_unicode_temp(name + "_h"));
  atom_l = AddAtom(to_unicode_temp(name + "_l"));
#endif
}

void tag::whack()
{
#ifdef __WIN32__
  if (atom) DeleteAtom(atom);
#else
  if (atom_l) DeleteAtom(atom_l);
  if (atom_h) DeleteAtom(atom_h);
#endif
}


tagged_window::tagged_window(const tag &_name_tag)
: name_tag(_name_tag),
  window(NIL),
  attached(false)
{}

void tagged_window::attach(window_handle _window)
{
  window = _window;
#ifdef __WIN32__
  SetProp(window, to_unicode_temp((char *)name_tag.atom), (HANDLE)this);
#else
  SetProp(window, to_unicode_temp((char *)name_tag.atom_h), (HANDLE)HIWORD((DWORD)this));
  SetProp(window, to_unicode_temp((char *)name_tag.atom_l), (HANDLE)LOWORD((DWORD)this));
#endif
  attached = true;
}

tagged_window::~tagged_window() { detach(); }

void tagged_window::detach()
{
  if (!attached) return;
#ifdef __WIN32__
  RemoveProp(window, to_unicode_temp((char *)name_tag.atom));
#else
  RemoveProp(window, to_unicode_temp((char *)name_tag.atom_l));
  RemoveProp(window, to_unicode_temp((char *)name_tag.atom_h));
#endif
  window = NIL;
  attached = false;
}

const tagged_window *tagged_window::find(window_handle window,
    const tag &name_tag)
{
#ifdef __WIN32__
  HANDLE h = GetProp(window, to_unicode_temp((char *)name_tag.atom));
  return (tagged_window *)h;
#else
  return (tagged_window *)MAKELONG(GetProp(window, to_unicode_temp((char *)name_tag.atom_l)),
      GetProp(window, to_unicode_temp((char *)name_tag.atom_h)));
#endif
}


#endif //TAG_WIN_IMPLEMENTATION_FILE

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