/*
 * This file is part of firk's window manager for x11 (fwm)
 * Copyright (C) 2016-2021 firk <firk@cantconnect.ru>
 *
 * 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <X11/Xlib.h>
#include <X11/Xproto.h>
#include "error.h"

static int (*def_handle)(Display * dis, XErrorEvent * e);

static int error_handle(Display * dis, XErrorEvent * e) {
  /* error conditions caused by latency
     (ex. we handling pending ConfigureRequest event for a window but
       that window was already destroyed and we got BadWindow) */
  if(e->error_code==BadWindow ||
    e->request_code==X_SetInputFocus && e->error_code==BadMatch ||
    e->request_code==X_ConfigureWindow && e->error_code==BadMatch ||
    e->request_code==X_GrabButton && e->error_code==BadAccess ||
    e->request_code==X_GrabKey && e->error_code==BadAccess
    ) return 0;
/* dwm also ignores (why?) BadDrawable for
   X_PolyText8, X_PolyFillRectangle, X_PolySegment and X_CopyArea */
  return def_handle(dis, e);
}

extern void error_init(void) {
  def_handle = XSetErrorHandler(error_handle);
}