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/**
* Navit, a modular navigation system.
* Copyright (C) 2005-2008 Navit Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <glib.h>
#include <string.h>
#include "item.h"
#include "debug.h"
#include "callback.h"
struct callback {
void (*func)();
int pcount;
enum attr_type type;
void *p[0];
};
struct callback_list {
GList *list;
};
struct callback_list *
callback_list_new(void)
{
struct callback_list *ret=g_new0(struct callback_list, 1);
return ret;
}
struct callback *
callback_new_attr(void (*func)(void), enum attr_type type, int pcount, void **p)
{
struct callback *ret;
int i;
ret=g_malloc0(sizeof(struct callback)+pcount*sizeof(void *));
ret->func=func;
ret->pcount=pcount;
ret->type=type;
for (i = 0 ; i < pcount ; i++) {
ret->p[i]=p[i];
}
return ret;
}
struct callback *
callback_new(void (*func)(void), int pcount, void **p)
{
return callback_new_attr(func, attr_none, pcount, p);
}
void
callback_destroy(struct callback *cb)
{
g_free(cb);
}
void
callback_set_arg(struct callback *cb, int arg, void *p)
{
if (arg < 0 || arg > cb->pcount)
return;
cb->p[arg]=p;
}
void
callback_list_add(struct callback_list *l, struct callback *cb)
{
l->list=g_list_prepend(l->list, cb);
}
struct callback *
callback_list_add_new(struct callback_list *l, void (*func)(void), int pcount, void **p)
{
struct callback *ret;
ret=callback_new(func, pcount, p);
callback_list_add(l, ret);
return ret;
}
void
callback_list_remove(struct callback_list *l, struct callback *cb)
{
l->list=g_list_remove(l->list, cb);
}
void
callback_list_remove_destroy(struct callback_list *l, struct callback *cb)
{
callback_list_remove(l, cb);
g_free(cb);
}
void
callback_call(struct callback *cb, int pcount, void **p)
{
int i;
void *pf[8];
if (! cb)
return;
if (cb->pcount + pcount <= 8) {
dbg(1,"cb->pcount=%d\n", cb->pcount);
if (cb->pcount && cb->p)
dbg(1,"cb->p[0]=%p\n", cb->p[0]);
dbg(1,"pcount=%d\n", pcount);
if (pcount && p)
dbg(1,"p[0]=%p\n", p[0]);
for (i = 0 ; i < cb->pcount ; i++)
pf[i]=cb->p[i];
for (i = 0 ; i < pcount ; i++)
pf[i+cb->pcount]=p[i];
switch (cb->pcount+pcount) {
case 8:
cb->func(pf[0],pf[1],pf[2],pf[3],pf[4],pf[5],pf[6],pf[7]);
break;
case 7:
cb->func(pf[0],pf[1],pf[2],pf[3],pf[4],pf[5],pf[6]);
break;
case 6:
cb->func(pf[0],pf[1],pf[2],pf[3],pf[4],pf[5]);
break;
case 5:
cb->func(pf[0],pf[1],pf[2],pf[3],pf[4]);
break;
case 4:
cb->func(pf[0],pf[1],pf[2],pf[3]);
break;
case 3:
cb->func(pf[0],pf[1],pf[2]);
break;
case 2:
cb->func(pf[0],pf[1]);
break;
case 1:
cb->func(pf[0]);
break;
case 0:
cb->func();
break;
}
} else {
g_warning("too many parameters for callback (%d+%d)\n", cb->pcount, pcount);
}
}
void
callback_list_call_attr(struct callback_list *l, enum attr_type type, int pcount, void **p)
{
GList *cbi;
struct callback *cb;
cbi=l->list;
while (cbi) {
cb=cbi->data;
if (type == attr_any || cb->type == attr_any || cb->type == type)
callback_call(cb, pcount, p);
cbi=g_list_next(cbi);
}
}
void
callback_list_call(struct callback_list *l, int pcount, void **p)
{
callback_list_call_attr(l, attr_any, pcount, p);
}
void
callback_list_destroy(struct callback_list *l)
{
GList *cbi;
cbi=l->list;
while (cbi) {
g_free(cbi->data);
cbi=g_list_next(cbi);
}
g_list_free(l->list);
g_free(l);
}
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