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 along
  17  *  with this program; if not, write to the Free Software Foundation, Inc.,
  18  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "wconfig.h"
  22
  23 #include <stdlib.h>
  24 #include <signal.h>
  25 #include <unistd.h>
  26
  27 #include <X11/Xlib.h>
  28 #include <X11/Xutil.h>
  29
  30 #include "WindowMaker.h"
  31 #include "window.h"
  32 #include "client.h"
  33 #include "funcs.h"
  34 #include "main.h"
  35 #include "properties.h"
  36 #include "session.h"
  37 #include "winspector.h"
  38 #include "wmspec.h"
  39 #include "colormap.h"
  40 #include "shutdown.h"
  41
  42 extern Atom _XA_WM_DELETE_WINDOW;
  43 extern Time LastTimestamp;
  44 extern int wScreenCount;
  45
  46 static void wipeDesktop(WScreen * scr);
  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 Shutdown(WShutdownMode mode)
  59 {
  60         int i;
  61 #ifdef HAVE_INOTIFY
  62         extern int inotifyFD;
  63 #endif
  64
  65         switch (mode) {
  66         case WSLogoutMode:
  67         case WSKillMode:
  68         case WSExitMode:
  69                 /* if there is no session manager, send SAVE_YOURSELF to
  70                  * the clients */
  71 #ifdef HAVE_INOTIFY
  72                 close(inotifyFD);
  73 #endif
  74                 for (i = 0; i < wScreenCount; i++) {
  75                         WScreen *scr;
  76
  77                         scr = wScreenWithNumber(i);
  78                         if (scr) {
  79                                 if (scr->helper_pid)
  80                                         kill(scr->helper_pid, SIGKILL);
  81
  82                                 wScreenSaveState(scr);
  83
  84                                 if (mode == WSKillMode)
  85                                         wipeDesktop(scr);
  86                                 else
  87                                         RestoreDesktop(scr);
  88                         }
  89                 }
  90                 ExecExitScript();
  91                 Exit(0);
  92                 break;
  93
  94         case WSRestartPreparationMode:
  95                 for (i = 0; i < wScreenCount; i++) {
  96                         WScreen *scr;
  97
  98 #ifdef HAVE_INOTIFY
  99                         close(inotifyFD);
 100 #endif
 101                         scr = wScreenWithNumber(i);
 102                         if (scr) {
 103                                 if (scr->helper_pid)
 104                                         kill(scr->helper_pid, SIGKILL);
 105                                 wScreenSaveState(scr);
 106                                 RestoreDesktop(scr);
 107                         }
 108                 }
 109                 break;
 110         }
 111 }
 112
 113 static void restoreWindows(WMBag * bag, WMBagIterator iter)
 114 {
 115         WCoreWindow *next;
 116         WCoreWindow *core;
 117         WWindow *wwin;
 118
 119         if (iter == NULL) {
 120                 core = WMBagFirst(bag, &iter);
 121         } else {
 122                 core = WMBagNext(bag, &iter);
 123         }
 124
 125         if (core == NULL)
 126                 return;
 127
 128         restoreWindows(bag, iter);
 129
 130         /* go to the end of the list */
 131         while (core->stacking->under)
 132                 core = core->stacking->under;
 133
 134         while (core) {
 135                 next = core->stacking->above;
 136
 137                 if (core->descriptor.parent_type == WCLASS_WINDOW) {
 138                         Window window;
 139
 140                         wwin = core->descriptor.parent;
 141                         window = wwin->client_win;
 142                         wUnmanageWindow(wwin, !wwin->flags.internal_window, False);
 143                         XMapWindow(dpy, window);
 144                 }
 145                 core = next;
 146         }
 147 }
 148
 149 /*
 150  *----------------------------------------------------------------------
 151  * RestoreDesktop--
 152  *      Puts the desktop in a usable state when exiting.
 153  *
 154  * Side effects:
 155  *      All frame windows are removed and windows are reparented
 156  * back to root. Windows that are outside the screen are
 157  * brought to a viable place.
 158  *
 159  *----------------------------------------------------------------------
 160  */
 161 void RestoreDesktop(WScreen * scr)
 162 {
 163         if (scr->helper_pid > 0) {
 164                 kill(scr->helper_pid, SIGTERM);
 165                 scr->helper_pid = 0;
 166         }
 167
 168         XGrabServer(dpy);
 169         wDestroyInspectorPanels();
 170
 171         /* reparent windows back to the root window, keeping the stacking order */
 172         restoreWindows(scr->stacking_list, NULL);
 173
 174         XUngrabServer(dpy);
 175         XSetInputFocus(dpy, PointerRoot, RevertToParent, CurrentTime);
 176         wColormapInstallForWindow(scr, NULL);
 177         PropCleanUp(scr->root_win);
 178         wNETWMCleanup(scr);
 179         XSync(dpy, 0);
 180 }
 181
 182 /*
 183  *----------------------------------------------------------------------
 184  * wipeDesktop--
 185  *      Kills all windows in a screen. Send DeleteWindow to all windows
 186  * that support it and KillClient on all windows that don't.
 187  *
 188  * Side effects:
 189  *      All managed windows are closed.
 190  *
 191  * TODO: change to XQueryTree()
 192  *----------------------------------------------------------------------
 193  */
 194 static void wipeDesktop(WScreen * scr)
 195 {
 196         WWindow *wwin;
 197
 198         wwin = scr->focused_window;
 199         while (wwin) {
 200                 if (wwin->protocols.DELETE_WINDOW)
 201                         wClientSendProtocol(wwin, _XA_WM_DELETE_WINDOW, LastTimestamp);
 202                 else
 203                         wClientKill(wwin);
 204                 wwin = wwin->prev;
 205         }
 206         XSync(dpy, False);
 207 }