/* Sloppy focus
 *
 * Copyright (C) 2005 Shawn Betts <address@hidden>
 *
 * sloppy 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, or (at your option)
 * any later version.
 *
 * sloppy 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 software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA
 */

#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xproto.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>

int (*defaulthandler)();

int
errorhandler(Display *display, XErrorEvent *error)
{
  if(error->error_code!=BadWindow)
    (*defaulthandler)(display,error);
  return 0;
}

int
spawn(char *cmd)
{
  int pid;

  pid = fork();
  if (pid == 0)
    {
      execl("/bin/sh", "sh", "-c", cmd, (char *)NULL);
      _exit(EXIT_FAILURE);
    }
  return pid;
}

int
main (int argc, char **argv)
{
  Display *display;
  int i, numscreens;

  display = XOpenDisplay(NULL);
  if(!display)
    {
      perror("could not open display");
      exit(1);
    }

  defaulthandler = XSetErrorHandler(errorhandler);
  numscreens = ScreenCount(display);

  for (i=0; i<numscreens; i++)
    {
      unsigned int j, nwins;
      Window dw1, dw2, *wins;

      XSelectInput(display,RootWindow(display, i), SubstructureNotifyMask);
      XQueryTree(display, RootWindow(display, i), &dw1, &dw2, &wins, &nwins);
      for (j=0; j<nwins; j++)
	XSelectInput(display, wins[j], EnterWindowMask);
    }

  while (1)
    {
      XEvent event;
      do
	{
	  XNextEvent(display,&event);
	  if (event.type == CreateNotify)
	    XSelectInput(display, event.xcreatewindow.window, EnterWindowMask);
	} while(event.type != EnterNotify);

      /* A window was entered. select it. */
      {
        char shell[256];
        snprintf (shell, 255, "$RATPOISON -c \"select $($RATPOISON -c 'windows %%i %%n %%f' | grep '%ld' | awk '$3 != '$($RATPOISON -c curframe)' && $3 != \"\" {print $2}')\" 2>/dev/null", event.xcrossing.window);
	//printf ("%s\n", shell);
        spawn (shell);
        wait (NULL);
      }
    }

  XCloseDisplay (display);

  return 0;
}

/*
Local Variables: ***
compile-command: "gcc -g -Wall -O2  -I/usr/X11R6/include -o sloppy sloppy.c -L/usr/X11R6/lib -lX11" ***
End: ***
*/