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