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 "properties.h"
  35 #include "session.h"
  36 #include "winspector.h"
  37 #include "wmspec.h"
  38
  39 extern Atom _XA_WM_DELETE_WINDOW;
  40 extern Time LastTimestamp;
  41 extern int wScreenCount;
  42
  43 static void wipeDesktop(WScreen * scr);
  44
  45 /*
  46  *----------------------------------------------------------------------
  47  * Shutdown-
  48  *      Exits the window manager cleanly. If mode is WSLogoutMode,
  49  * the whole X session will be closed, by killing all clients if
  50  * no session manager is running or by asking a shutdown to
  51  * it if its present.
  52  *
  53  *----------------------------------------------------------------------
  54  */
  55 void Shutdown(WShutdownMode mode)
  56 {
  57         int i;
  58 #ifdef HAVE_INOTIFY
  59         extern int inotifyFD;
  60 #endif
  61
  62         switch (mode) {
  63         case WSLogoutMode:
  64         case WSKillMode:
  65         case WSExitMode:
  66                 /* if there is no session manager, send SAVE_YOURSELF to
  67                  * the clients */
  68 #ifdef HAVE_INOTIFY
  69                 close(inotifyFD);
  70 #endif
  71                 for (i = 0; i < wScreenCount; i++) {
  72                         WScreen *scr;
  73
  74                         scr = wScreenWithNumber(i);
  75                         if (scr) {
  76                                 if (scr->helper_pid)
  77                                         kill(scr->helper_pid, SIGKILL);
  78
  79                                 wScreenSaveState(scr);
  80
  81                                 if (mode == WSKillMode)
  82                                         wipeDesktop(scr);
  83                                 else
  84                                         RestoreDesktop(scr);
  85                         }
  86                 }
  87                 ExecExitScript();
  88                 Exit(0);
  89                 break;
  90
  91         case WSRestartPreparationMode:
  92                 for (i = 0; i < wScreenCount; i++) {
  93                         WScreen *scr;
  94
  95 #ifdef HAVE_INOTIFY
  96                         close(inotifyFD);
  97 #endif
  98                         scr = wScreenWithNumber(i);
  99                         if (scr) {
 100                                 if (scr->helper_pid)
 101                                         kill(scr->helper_pid, SIGKILL);
 102                                 wScreenSaveState(scr);
 103                                 RestoreDesktop(scr);
 104                         }
 105                 }
 106                 break;
 107         }
 108 }
 109
 110 static void restoreWindows(WMBag * bag, WMBagIterator iter)
 111 {
 112         WCoreWindow *next;
 113         WCoreWindow *core;
 114         WWindow *wwin;
 115
 116         if (iter == NULL) {
 117                 core = WMBagFirst(bag, &iter);
 118         } else {
 119                 core = WMBagNext(bag, &iter);
 120         }
 121
 122         if (core == NULL)
 123                 return;
 124
 125         restoreWindows(bag, iter);
 126
 127         /* go to the end of the list */
 128         while (core->stacking->under)
 129                 core = core->stacking->under;
 130
 131         while (core) {
 132                 next = core->stacking->above;
 133
 134                 if (core->descriptor.parent_type == WCLASS_WINDOW) {
 135                         Window window;
 136
 137                         wwin = core->descriptor.parent;
 138                         window = wwin->client_win;
 139                         wUnmanageWindow(wwin, !wwin->flags.internal_window, False);
 140                         XMapWindow(dpy, window);
 141                 }
 142                 core = next;
 143         }
 144 }
 145
 146 /*
 147  *----------------------------------------------------------------------
 148  * RestoreDesktop--
 149  *      Puts the desktop in a usable state when exiting.
 150  *
 151  * Side effects:
 152  *      All frame windows are removed and windows are reparented
 153  * back to root. Windows that are outside the screen are
 154  * brought to a viable place.
 155  *
 156  *----------------------------------------------------------------------
 157  */
 158 void RestoreDesktop(WScreen * scr)
 159 {
 160         if (scr->helper_pid > 0) {
 161                 kill(scr->helper_pid, SIGTERM);
 162                 scr->helper_pid = 0;
 163         }
 164
 165         XGrabServer(dpy);
 166         wDestroyInspectorPanels();
 167
 168         /* reparent windows back to the root window, keeping the stacking order */
 169         restoreWindows(scr->stacking_list, NULL);
 170
 171         XUngrabServer(dpy);
 172         XSetInputFocus(dpy, PointerRoot, RevertToParent, CurrentTime);
 173         wColormapInstallForWindow(scr, NULL);
 174         PropCleanUp(scr->root_win);
 175         wNETWMCleanup(scr);
 176         XSync(dpy, 0);
 177 }
 178
 179 /*
 180  *----------------------------------------------------------------------
 181  * wipeDesktop--
 182  *      Kills all windows in a screen. Send DeleteWindow to all windows
 183  * that support it and KillClient on all windows that don't.
 184  *
 185  * Side effects:
 186  *      All managed windows are closed.
 187  *
 188  * TODO: change to XQueryTree()
 189  *----------------------------------------------------------------------
 190  */
 191 static void wipeDesktop(WScreen * scr)
 192 {
 193         WWindow *wwin;
 194
 195         wwin = scr->focused_window;
 196         while (wwin) {
 197                 if (wwin->protocols.DELETE_WINDOW)
 198                         wClientSendProtocol(wwin, _XA_WM_DELETE_WINDOW, LastTimestamp);
 199                 else
 200                         wClientKill(wwin);
 201                 wwin = wwin->prev;
 202         }
 203         XSync(dpy, False);
 204 }