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
  41 extern Atom _XA_WM_DELETE_WINDOW;
  42 extern Time LastTimestamp;
  43 extern int wScreenCount;
  44
  45 static void wipeDesktop(WScreen * scr);
  46
  47 /*
  48  *----------------------------------------------------------------------
  49  * Shutdown-
  50  *      Exits the window manager cleanly. If mode is WSLogoutMode,
  51  * the whole X session will be closed, by killing all clients if
  52  * no session manager is running or by asking a shutdown to
  53  * it if its present.
  54  *
  55  *----------------------------------------------------------------------
  56  */
  57 void Shutdown(WShutdownMode mode)
  58 {
  59         int i;
  60 #ifdef HAVE_INOTIFY
  61         extern int inotifyFD;
  62 #endif
  63
  64         switch (mode) {
  65         case WSLogoutMode:
  66         case WSKillMode:
  67         case WSExitMode:
  68                 /* if there is no session manager, send SAVE_YOURSELF to
  69                  * the clients */
  70 #ifdef HAVE_INOTIFY
  71                 close(inotifyFD);
  72 #endif
  73                 for (i = 0; i < wScreenCount; i++) {
  74                         WScreen *scr;
  75
  76                         scr = wScreenWithNumber(i);
  77                         if (scr) {
  78                                 if (scr->helper_pid)
  79                                         kill(scr->helper_pid, SIGKILL);
  80
  81                                 wScreenSaveState(scr);
  82
  83                                 if (mode == WSKillMode)
  84                                         wipeDesktop(scr);
  85                                 else
  86                                         RestoreDesktop(scr);
  87                         }
  88                 }
  89                 ExecExitScript();
  90                 Exit(0);
  91                 break;
  92
  93         case WSRestartPreparationMode:
  94                 for (i = 0; i < wScreenCount; i++) {
  95                         WScreen *scr;
  96
  97 #ifdef HAVE_INOTIFY
  98                         close(inotifyFD);
  99 #endif
 100                         scr = wScreenWithNumber(i);
 101                         if (scr) {
 102                                 if (scr->helper_pid)
 103                                         kill(scr->helper_pid, SIGKILL);
 104                                 wScreenSaveState(scr);
 105                                 RestoreDesktop(scr);
 106                         }
 107                 }
 108                 break;
 109         }
 110 }
 111
 112 static void restoreWindows(WMBag * bag, WMBagIterator iter)
 113 {
 114         WCoreWindow *next;
 115         WCoreWindow *core;
 116         WWindow *wwin;
 117
 118         if (iter == NULL) {
 119                 core = WMBagFirst(bag, &iter);
 120         } else {
 121                 core = WMBagNext(bag, &iter);
 122         }
 123
 124         if (core == NULL)
 125                 return;
 126
 127         restoreWindows(bag, iter);
 128
 129         /* go to the end of the list */
 130         while (core->stacking->under)
 131                 core = core->stacking->under;
 132
 133         while (core) {
 134                 next = core->stacking->above;
 135
 136                 if (core->descriptor.parent_type == WCLASS_WINDOW) {
 137                         Window window;
 138
 139                         wwin = core->descriptor.parent;
 140                         window = wwin->client_win;
 141                         wUnmanageWindow(wwin, !wwin->flags.internal_window, False);
 142                         XMapWindow(dpy, window);
 143                 }
 144                 core = next;
 145         }
 146 }
 147
 148 /*
 149  *----------------------------------------------------------------------
 150  * RestoreDesktop--
 151  *      Puts the desktop in a usable state when exiting.
 152  *
 153  * Side effects:
 154  *      All frame windows are removed and windows are reparented
 155  * back to root. Windows that are outside the screen are
 156  * brought to a viable place.
 157  *
 158  *----------------------------------------------------------------------
 159  */
 160 void RestoreDesktop(WScreen * scr)
 161 {
 162         if (scr->helper_pid > 0) {
 163                 kill(scr->helper_pid, SIGTERM);
 164                 scr->helper_pid = 0;
 165         }
 166
 167         XGrabServer(dpy);
 168         wDestroyInspectorPanels();
 169
 170         /* reparent windows back to the root window, keeping the stacking order */
 171         restoreWindows(scr->stacking_list, NULL);
 172
 173         XUngrabServer(dpy);
 174         XSetInputFocus(dpy, PointerRoot, RevertToParent, CurrentTime);
 175         wColormapInstallForWindow(scr, NULL);
 176         PropCleanUp(scr->root_win);
 177         wNETWMCleanup(scr);
 178         XSync(dpy, 0);
 179 }
 180
 181 /*
 182  *----------------------------------------------------------------------
 183  * wipeDesktop--
 184  *      Kills all windows in a screen. Send DeleteWindow to all windows
 185  * that support it and KillClient on all windows that don't.
 186  *
 187  * Side effects:
 188  *      All managed windows are closed.
 189  *
 190  * TODO: change to XQueryTree()
 191  *----------------------------------------------------------------------
 192  */
 193 static void wipeDesktop(WScreen * scr)
 194 {
 195         WWindow *wwin;
 196
 197         wwin = scr->focused_window;
 198         while (wwin) {
 199                 if (wwin->protocols.DELETE_WINDOW)
 200                         wClientSendProtocol(wwin, _XA_WM_DELETE_WINDOW, LastTimestamp);
 201                 else
 202                         wClientKill(wwin);
 203                 wwin = wwin->prev;
 204         }
 205         XSync(dpy, False);
 206 }