/*
 *  Window Maker window manager
 *
 *  Copyright (c) 1997-2003 Alfredo K. Kojima
 *
 *  This program 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 of the License, or
 *  (at your option) any later version.
 *
 *  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 "wconfig.h"

#include <stdlib.h>
#include <signal.h>
#include <unistd.h>


#include "WindowMaker.h"
#include "window.h"
#include "client.h"
#include "main.h"
#include "properties.h"
#include "session.h"
#include "winspector.h"
#include "colormap.h"
#include "shutdown.h"



/*
 *----------------------------------------------------------------------
 * Shutdown-
 * 	Exits the window manager cleanly. If mode is WSLogoutMode,
 * the whole X session will be closed, by killing all clients if
 * no session manager is running or by asking a shutdown to
 * it if its present.
 *
 *----------------------------------------------------------------------
 */
void Shutdown(WShutdownMode mode)
{
	int i;

	switch (mode) {
	case WSLogoutMode:
	case WSKillMode:
	case WSExitMode:
		/* if there is no session manager, send SAVE_YOURSELF to
		 * the clients */
#ifdef HAVE_INOTIFY
		if (w_global.inotify.fd_event_queue >= 0) {
			close(w_global.inotify.fd_event_queue);
			w_global.inotify.fd_event_queue = -1;
		}
#endif
		for (i = 0; i < w_global.screen_count; i++) {
			WScreen *scr;

			scr = wScreenWithNumber(i);
			if (scr) {
				if (scr->helper_pid)
					kill(scr->helper_pid, SIGKILL);

				wScreenSaveState(scr);

				if (mode == WSKillMode)
					wm_backend->wipe_desktop(scr);
				else
					wm_backend->restore_desktop(scr);
			}
		}
		ExecExitScript();
		Exit(0);
		break;

	case WSRestartPreparationMode:
		for (i = 0; i < w_global.screen_count; i++) {
			WScreen *scr;

#ifdef HAVE_INOTIFY
			if (w_global.inotify.fd_event_queue >= 0) {
				close(w_global.inotify.fd_event_queue);
				w_global.inotify.fd_event_queue = -1;
			}
#endif
			scr = wScreenWithNumber(i);
			if (scr) {
				if (scr->helper_pid)
					kill(scr->helper_pid, SIGKILL);
				wScreenSaveState(scr);
				RestoreDesktop(scr);
			}
		}
		break;
	}
}

/*
 *----------------------------------------------------------------------
 * RestoreDesktop--
 * 	Puts the desktop in a usable state when exiting.
 *
 * Side effects:
 * 	All frame windows are removed and windows are reparented
 * back to root. Windows that are outside the screen are
 * brought to a viable place.
 *
 *----------------------------------------------------------------------
 */
void RestoreDesktop(WScreen * scr)
{
	wm_backend->restore_desktop(scr);
}

void wWipeDesktop(WScreen * scr)
{
	wm_backend->wipe_desktop(scr);
}