src/shutdown.c

   1 /*
   2  *  Window Maker window manager
   3  *
   4  *  Copyright (c) 1997-2002 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 #include <X11/Intrinsic.h>
  31
  32 #include "WindowMaker.h"
  33 #include "window.h"
  34 #include "client.h"
  35 #include "funcs.h"
  36 #include "properties.h"
  37 #include "session.h"
  38 #include "winspector.h"
  39 #ifdef KWM_HINTS
  40 # include "kwm.h"
  41 #endif
  42 #ifdef OLWM_HINTS
  43 # include "openlook.h"
  44 #endif
  45
  46 extern Atom _XA_WM_DELETE_WINDOW;
  47 extern Time LastTimestamp;
  48 extern int wScreenCount;
  49
  50
  51 static void wipeDesktop(WScreen *scr);
  52
  53
  54 /*
  55  *----------------------------------------------------------------------
  56  * Shutdown-
  57  *      Exits the window manager cleanly. If mode is WSLogoutMode,
  58  * the whole X session will be closed, by killing all clients if
  59  * no session manager is running or by asking a shutdown to
  60  * it if its present.
  61  *
  62  *----------------------------------------------------------------------
  63  */
  64 void
  65 Shutdown(WShutdownMode mode)
  66 {
  67     int i;
  68
  69     switch (mode) {
  70      case WSLogoutMode:
  71 #ifdef XSMP_ENABLED
  72         wSessionRequestShutdown();
  73         break;
  74 #else
  75         /* fall through */
  76 #endif
  77      case WSKillMode:
  78      case WSExitMode:
  79         /* if there is no session manager, send SAVE_YOURSELF to
  80          * the clients */
  81 #if 0
  82 #ifdef XSMP_ENABLED
  83         if (!wSessionIsManaged())
  84 #endif
  85             for (i = 0; i < wScreenCount; i++) {
  86                 WScreen *scr;
  87
  88                 scr = wScreenWithNumber(i);
  89                 if (scr) {
  90                     wSessionSendSaveYourself(scr);
  91                 }
  92             }
  93 #endif
  94         for (i = 0; i < wScreenCount; i++) {
  95             WScreen *scr;
  96
  97             scr = wScreenWithNumber(i);
  98             if (scr) {
  99                 if (scr->helper_pid)
 100                     kill(scr->helper_pid, SIGKILL);
 101
 102                 /* if the session is not being managed, save restart info */
 103 #ifdef XSMP_ENABLED
 104                 if (!wSessionIsManaged())
 105 #endif
 106                     wSessionSaveClients(scr);
 107
 108 #ifdef KWM_HINTS
 109                 wKWMShutdown(scr, True);
 110 #endif
 111                 wScreenSaveState(scr);
 112
 113                 if (mode == WSKillMode)
 114                     wipeDesktop(scr);
 115                 else
 116                     RestoreDesktop(scr);
 117             }
 118         }
 119         ExecExitScript();
 120         Exit(0);
 121         break;
 122
 123      case WSRestartPreparationMode:
 124         for (i=0; i<wScreenCount; i++) {
 125             WScreen *scr;
 126
 127             scr = wScreenWithNumber(i);
 128             if (scr) {
 129                 if (scr->helper_pid)
 130                     kill(scr->helper_pid, SIGKILL);
 131 #ifdef KWM_HINTS
 132                 wKWMShutdown(scr, False);
 133 #endif
 134 #ifdef OLWM_HINTS
 135                 wOLWMShutdown(scr);
 136 #endif
 137                 wScreenSaveState(scr);
 138
 139                 RestoreDesktop(scr);
 140             }
 141         }
 142         break;
 143     }
 144 }
 145
 146
 147 static void
 148 restoreWindows(WMBag *bag, WMBagIterator iter)
 149 {
 150     WCoreWindow *next;
 151     WCoreWindow *core;
 152     WWindow *wwin;
 153
 154
 155     if (iter == NULL) {
 156         core = WMBagFirst(bag, &iter);
 157     } else {
 158         core = WMBagNext(bag, &iter);
 159     }
 160
 161     if (core == NULL)
 162         return;
 163
 164     restoreWindows(bag, iter);
 165
 166     /* go to the end of the list */
 167     while (core->stacking->under)
 168         core = core->stacking->under;
 169
 170     while (core) {
 171         next = core->stacking->above;
 172
 173         if (core->descriptor.parent_type==WCLASS_WINDOW) {
 174             Window window;
 175
 176             wwin = core->descriptor.parent;
 177             window = wwin->client_win;
 178             wUnmanageWindow(wwin, !wwin->flags.internal_window, False);
 179             XMapWindow(dpy, window);
 180         }
 181         core = next;
 182     }
 183 }
 184
 185
 186 /*
 187  *----------------------------------------------------------------------
 188  * RestoreDesktop--
 189  *      Puts the desktop in a usable state when exiting.
 190  *
 191  * Side effects:
 192  *      All frame windows are removed and windows are reparented
 193  * back to root. Windows that are outside the screen are
 194  * brought to a viable place.
 195  *
 196  *----------------------------------------------------------------------
 197  */
 198 void
 199 RestoreDesktop(WScreen *scr)
 200 {
 201     if (scr->helper_pid > 0) {
 202         kill(scr->helper_pid, SIGTERM);
 203         scr->helper_pid = 0;
 204     }
 205
 206     XGrabServer(dpy);
 207     wDestroyInspectorPanels();
 208
 209     /* reparent windows back to the root window, keeping the stacking order */
 210     restoreWindows(scr->stacking_list, NULL);
 211
 212     XUngrabServer(dpy);
 213     XSetInputFocus(dpy, PointerRoot, RevertToParent, CurrentTime);
 214     wColormapInstallForWindow(scr, NULL);
 215     PropCleanUp(scr->root_win);
 216     XSync(dpy, 0);
 217 }
 218
 219
 220 /*
 221  *----------------------------------------------------------------------
 222  * wipeDesktop--
 223  *      Kills all windows in a screen. Send DeleteWindow to all windows
 224  * that support it and KillClient on all windows that don't.
 225  *
 226  * Side effects:
 227  *      All managed windows are closed.
 228  *
 229  * TODO: change to XQueryTree()
 230  *----------------------------------------------------------------------
 231  */
 232 static void
 233 wipeDesktop(WScreen *scr)
 234 {
 235     WWindow *wwin;
 236
 237     wwin = scr->focused_window;
 238     while (wwin) {
 239         if (wwin->protocols.DELETE_WINDOW)
 240             wClientSendProtocol(wwin, _XA_WM_DELETE_WINDOW, LastTimestamp);
 241         else
 242             wClientKill(wwin);
 243         wwin = wwin->prev;
 244     }
 245     XSync(dpy, False);
 246 }
 247