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