src/shutdown.c

   1 /*
   2  *  Window Maker window manager
   3  *
   4  *  Copyright (c) 1997-2003 Alfredo K. Kojima
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19  *  USA.
  20  */
  21
  22 #include "wconfig.h"
  23
  24 #include <stdlib.h>
  25 #include <signal.h>
  26 #include <unistd.h>
  27
  28 #include <X11/Xlib.h>
  29 #include <X11/Xutil.h>
  30
  31 #include "WindowMaker.h"
  32 #include "window.h"
  33 #include "client.h"
  34 #include "funcs.h"
  35 #include "properties.h"
  36 #include "session.h"
  37 #include "winspector.h"
  38 #include "wmspec.h"
  39
  40 extern Atom _XA_WM_DELETE_WINDOW;
  41 extern Time LastTimestamp;
  42 extern int wScreenCount;
  43
  44 static void wipeDesktop(WScreen * scr);
  45
  46 /*
  47  *----------------------------------------------------------------------
  48  * Shutdown-
  49  *      Exits the window manager cleanly. If mode is WSLogoutMode,
  50  * the whole X session will be closed, by killing all clients if
  51  * no session manager is running or by asking a shutdown to
  52  * it if its present.
  53  *
  54  *----------------------------------------------------------------------
  55  */
  56 void Shutdown(WShutdownMode mode)
  57 {
  58         int i;
  59         extern int inotifyFD;
  60
  61         switch (mode) {
  62         case WSLogoutMode:
  63 #ifdef XSMP_ENABLED
  64                 wSessionRequestShutdown();
  65                 break;
  66 #else
  67                 /* fall through */
  68 #endif
  69         case WSKillMode:
  70         case WSExitMode:
  71                 /* if there is no session manager, send SAVE_YOURSELF to
  72                  * the clients */
  73 #if 0
  74 #ifdef XSMP_ENABLED
  75                 if (!wSessionIsManaged())
  76 #endif
  77                         for (i = 0; i < wScreenCount; i++) {
  78                                 WScreen *scr;
  79
  80                                 scr = wScreenWithNumber(i);
  81                                 if (scr) {
  82                                         wSessionSendSaveYourself(scr);
  83                                 }
  84                         }
  85 #endif
  86                 close(inotifyFD);
  87                 for (i = 0; i < wScreenCount; i++) {
  88                         WScreen *scr;
  89
  90                         scr = wScreenWithNumber(i);
  91                         if (scr) {
  92                                 if (scr->helper_pid)
  93                                         kill(scr->helper_pid, SIGKILL);
  94
  95                                 /* if the session is not being managed, save restart info */
  96 #ifdef XSMP_ENABLED
  97                                 if (!wSessionIsManaged())
  98 #endif
  99                                         wSessionSaveClients(scr);
 100
 101                                 wScreenSaveState(scr);
 102
 103                                 if (mode == WSKillMode)
 104                                         wipeDesktop(scr);
 105                                 else
 106                                         RestoreDesktop(scr);
 107                         }
 108                 }
 109                 ExecExitScript();
 110                 Exit(0);
 111                 break;
 112
 113         case WSRestartPreparationMode:
 114                 for (i = 0; i < wScreenCount; i++) {
 115                         WScreen *scr;
 116
 117                         close(inotifyFD);
 118                         scr = wScreenWithNumber(i);
 119                         if (scr) {
 120                                 if (scr->helper_pid)
 121                                         kill(scr->helper_pid, SIGKILL);
 122                                 wScreenSaveState(scr);
 123                                 RestoreDesktop(scr);
 124                         }
 125                 }
 126                 break;
 127         }
 128 }
 129
 130 static void restoreWindows(WMBag * bag, WMBagIterator iter)
 131 {
 132         WCoreWindow *next;
 133         WCoreWindow *core;
 134         WWindow *wwin;
 135
 136         if (iter == NULL) {
 137                 core = WMBagFirst(bag, &iter);
 138         } else {
 139                 core = WMBagNext(bag, &iter);
 140         }
 141
 142         if (core == NULL)
 143                 return;
 144
 145         restoreWindows(bag, iter);
 146
 147         /* go to the end of the list */
 148         while (core->stacking->under)
 149                 core = core->stacking->under;
 150
 151         while (core) {
 152                 next = core->stacking->above;
 153
 154                 if (core->descriptor.parent_type == WCLASS_WINDOW) {
 155                         Window window;
 156
 157                         wwin = core->descriptor.parent;
 158                         window = wwin->client_win;
 159                         wUnmanageWindow(wwin, !wwin->flags.internal_window, False);
 160                         XMapWindow(dpy, window);
 161                 }
 162                 core = next;
 163         }
 164 }
 165
 166 /*
 167  *----------------------------------------------------------------------
 168  * RestoreDesktop--
 169  *      Puts the desktop in a usable state when exiting.
 170  *
 171  * Side effects:
 172  *      All frame windows are removed and windows are reparented
 173  * back to root. Windows that are outside the screen are
 174  * brought to a viable place.
 175  *
 176  *----------------------------------------------------------------------
 177  */
 178 void RestoreDesktop(WScreen * scr)
 179 {
 180         if (scr->helper_pid > 0) {
 181                 kill(scr->helper_pid, SIGTERM);
 182                 scr->helper_pid = 0;
 183         }
 184
 185         XGrabServer(dpy);
 186         wDestroyInspectorPanels();
 187
 188         /* reparent windows back to the root window, keeping the stacking order */
 189         restoreWindows(scr->stacking_list, NULL);
 190
 191         XUngrabServer(dpy);
 192         XSetInputFocus(dpy, PointerRoot, RevertToParent, CurrentTime);
 193         wColormapInstallForWindow(scr, NULL);
 194         PropCleanUp(scr->root_win);
 195         wNETWMCleanup(scr);
 196         XSync(dpy, 0);
 197 }
 198
 199 /*
 200  *----------------------------------------------------------------------
 201  * wipeDesktop--
 202  *      Kills all windows in a screen. Send DeleteWindow to all windows
 203  * that support it and KillClient on all windows that don't.
 204  *
 205  * Side effects:
 206  *      All managed windows are closed.
 207  *
 208  * TODO: change to XQueryTree()
 209  *----------------------------------------------------------------------
 210  */
 211 static void wipeDesktop(WScreen * scr)
 212 {
 213         WWindow *wwin;
 214
 215         wwin = scr->focused_window;
 216         while (wwin) {
 217                 if (wwin->protocols.DELETE_WINDOW)
 218                         wClientSendProtocol(wwin, _XA_WM_DELETE_WINDOW, LastTimestamp);
 219                 else
 220                         wClientKill(wwin);
 221                 wwin = wwin->prev;
 222         }
 223         XSync(dpy, False);
 224 }