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