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
  45 static void wipeDesktop(WScreen *scr);
  46
  47
  48 /*
  49  *----------------------------------------------------------------------
  50  * Shutdown-
  51  *      Exits the window manager cleanly. If mode is WSLogoutMode,
  52  * the whole X session will be closed, by killing all clients if
  53  * no session manager is running or by asking a shutdown to
  54  * it if its present.
  55  *
  56  *----------------------------------------------------------------------
  57  */
  58 void
  59 Shutdown(WShutdownMode mode)
  60 {
  61     int i;
  62     extern int inotifyFD;
  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         close(inotifyFD);
  90         for (i = 0; i < wScreenCount; i++) {
  91             WScreen *scr;
  92
  93             scr = wScreenWithNumber(i);
  94             if (scr) {
  95                 if (scr->helper_pid)
  96                     kill(scr->helper_pid, SIGKILL);
  97
  98                 /* if the session is not being managed, save restart info */
  99 #ifdef XSMP_ENABLED
 100                 if (!wSessionIsManaged())
 101 #endif
 102                     wSessionSaveClients(scr);
 103
 104                 wScreenSaveState(scr);
 105
 106                 if (mode == WSKillMode)
 107                     wipeDesktop(scr);
 108                 else
 109                     RestoreDesktop(scr);
 110             }
 111         }
 112         ExecExitScript();
 113         Exit(0);
 114         break;
 115
 116     case WSRestartPreparationMode:
 117         for (i=0; i<wScreenCount; i++) {
 118             WScreen *scr;
 119
 120             close(inotifyFD);
 121             scr = wScreenWithNumber(i);
 122             if (scr) {
 123                 if (scr->helper_pid)
 124                     kill(scr->helper_pid, SIGKILL);
 125                 wScreenSaveState(scr);
 126                 RestoreDesktop(scr);
 127             }
 128         }
 129         break;
 130     }
 131 }
 132
 133
 134 static void
 135 restoreWindows(WMBag *bag, WMBagIterator iter)
 136 {
 137     WCoreWindow *next;
 138     WCoreWindow *core;
 139     WWindow *wwin;
 140
 141
 142     if (iter == NULL) {
 143         core = WMBagFirst(bag, &iter);
 144     } else {
 145         core = WMBagNext(bag, &iter);
 146     }
 147
 148     if (core == NULL)
 149         return;
 150
 151     restoreWindows(bag, iter);
 152
 153     /* go to the end of the list */
 154     while (core->stacking->under)
 155         core = core->stacking->under;
 156
 157     while (core) {
 158         next = core->stacking->above;
 159
 160         if (core->descriptor.parent_type==WCLASS_WINDOW) {
 161             Window window;
 162
 163             wwin = core->descriptor.parent;
 164             window = wwin->client_win;
 165             wUnmanageWindow(wwin, !wwin->flags.internal_window, False);
 166             XMapWindow(dpy, window);
 167         }
 168         core = next;
 169     }
 170 }
 171
 172
 173 /*
 174  *----------------------------------------------------------------------
 175  * RestoreDesktop--
 176  *      Puts the desktop in a usable state when exiting.
 177  *
 178  * Side effects:
 179  *      All frame windows are removed and windows are reparented
 180  * back to root. Windows that are outside the screen are
 181  * brought to a viable place.
 182  *
 183  *----------------------------------------------------------------------
 184  */
 185 void
 186 RestoreDesktop(WScreen *scr)
 187 {
 188     if (scr->helper_pid > 0) {
 189         kill(scr->helper_pid, SIGTERM);
 190         scr->helper_pid = 0;
 191     }
 192
 193     XGrabServer(dpy);
 194     wDestroyInspectorPanels();
 195
 196     /* reparent windows back to the root window, keeping the stacking order */
 197     restoreWindows(scr->stacking_list, NULL);
 198
 199     XUngrabServer(dpy);
 200     XSetInputFocus(dpy, PointerRoot, RevertToParent, CurrentTime);
 201     wColormapInstallForWindow(scr, NULL);
 202     PropCleanUp(scr->root_win);
 203     wNETWMCleanup(scr);
 204     XSync(dpy, 0);
 205 }
 206
 207
 208 /*
 209  *----------------------------------------------------------------------
 210  * wipeDesktop--
 211  *      Kills all windows in a screen. Send DeleteWindow to all windows
 212  * that support it and KillClient on all windows that don't.
 213  *
 214  * Side effects:
 215  *      All managed windows are closed.
 216  *
 217  * TODO: change to XQueryTree()
 218  *----------------------------------------------------------------------
 219  */
 220 static void
 221 wipeDesktop(WScreen *scr)
 222 {
 223     WWindow *wwin;
 224
 225     wwin = scr->focused_window;
 226     while (wwin) {
 227         if (wwin->protocols.DELETE_WINDOW)
 228             wClientSendProtocol(wwin, _XA_WM_DELETE_WINDOW, LastTimestamp);
 229         else
 230             wClientKill(wwin);
 231         wwin = wwin->prev;
 232     }
 233     XSync(dpy, False);
 234 }
 235