mc/gnome/gkey.c

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1998-02-27 07:54:42 +03:00
/*
* Midnight Commander -- GNOME edition
*
* Copyright 1997 The Free Software Foundation
*
* Author:Miguel de Icaza (miguel@gnu.org)
*/
#include <config.h>
#include "x.h"
#include "key.h"
/* The tty.h file is included since we try to use as much object code
* from the curses distribution as possible so we need to send back
* the same constants that the code expects on the non-X version
* of the code. The constants may be the ones from curses/ncurses
* or our macro definitions for slang
*/
struct trampoline {
select_fn fn;
void *fn_closure;
int fd;
int tag;
};
void
callback_trampoline (gpointer data, gint source, GdkInputCondition condition)
{
struct trampoline *t = data;
/* return value is ignored */
(*t->fn)(source, t->fn_closure);
}
/*
* We need to keep track of the select callbacks, as we need to release
* the trampoline closure.
*/
GList *select_list;
void
add_select_channel (int fd, select_fn callback, void *info)
{
struct trampoline *t;
t = xmalloc (sizeof (struct trampoline), "add_select_channel");
t->fn = callback;
t->fd = fd;
t->fn_closure = info;
t->tag = gdk_input_add (fd, GDK_INPUT_READ, callback_trampoline, t);
g_list_prepend (select_list, t);
}
static struct trampoline *tclosure;
static void
find_select_closure_callback (gpointer data, gpointer user_data)
{
struct trampoline *t = data;
int *pfd = (int *) user_data;
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if (t->fd == *pfd)
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tclosure = data;
}
void
delete_select_channel (int fd)
{
tclosure = 0;
g_list_foreach (select_list, find_select_closure_callback, &fd);
if (tclosure){
g_list_remove (select_list, tclosure);
gdk_input_remove (tclosure->tag);
free (tclosure);
} else {
fprintf (stderr, "PANIC: could not find closure for %d\n", fd);
}
}