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/** \file
* \brief get/set callback
*
* See Copyright Notice in "iup.h"
*/
#include <stdlib.h>
#include <stdarg.h>
#include "iup.h"
#include "iup_object.h"
#include "iup_assert.h"
Icallback IupGetCallback(Ihandle *ih, const char *name)
{
Icallback func = NULL;
void* value;
iupASSERT(iupObjectCheck(ih));
if (!iupObjectCheck(ih))
return NULL;
iupASSERT(name!=NULL);
if (!name)
return NULL;
func = (Icallback)iupTableGetFunc(ih->attrib, name, &value);
if (!func && value)
{
/* if not a IUPTABLE_FUNCPOINTER then it is an old fashion name */
func = IupGetFunction((const char*)value);
}
return func;
}
Icallback IupSetCallback(Ihandle *ih, const char *name, Icallback func)
{
Icallback old_func = NULL;
iupASSERT(iupObjectCheck(ih));
if (!iupObjectCheck(ih))
return NULL;
iupASSERT(name!=NULL);
if (!name)
return NULL;
if (!func)
iupTableRemove(ih->attrib, name);
else
{
void* value;
old_func = (Icallback)iupTableGetFunc(ih->attrib, name, &value);
if (!old_func && value)
old_func = IupGetFunction((const char*)value);
iupTableSetFunc(ih->attrib, name, (Ifunc)func);
}
return old_func;
}
Ihandle* IupSetCallbacks(Ihandle* ih, const char *name, Icallback func, ...)
{
va_list arglist;
iupASSERT(iupObjectCheck(ih));
if (!iupObjectCheck(ih))
return NULL;
IupSetCallback(ih, name, func);
va_start(arglist, func);
name=va_arg(arglist, const char*);
while (name)
{
func=va_arg(arglist, Icallback);
IupSetCallback(ih, name, func);
name=va_arg(arglist, const char*);
}
va_end (arglist);
return ih;
}
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