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
  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                                 wScreenSaveState(scr);
  81
  82                                 if (mode == WSKillMode)
  83                                         wipeDesktop(scr);
  84                                 else
  85                                         RestoreDesktop(scr);
  86                         }
  87                 }
  88                 ExecExitScript();
  89                 Exit(0);
  90                 break;
  91
  92         case WSRestartPreparationMode:
  93                 for (i = 0; i < wScreenCount; i++) {
  94                         WScreen *scr;
  95
  96 #ifdef HAVE_INOTIFY
  97                         close(inotifyFD);
  98 #endif
  99                         scr = wScreenWithNumber(i);
 100                         if (scr) {
 101                                 if (scr->helper_pid)
 102                                         kill(scr->helper_pid, SIGKILL);
 103                                 wScreenSaveState(scr);
 104                                 RestoreDesktop(scr);
 105                         }
 106                 }
 107                 break;
 108         }
 109 }
 110
 111 static void restoreWindows(WMBag * bag, WMBagIterator iter)
 112 {
 113         WCoreWindow *next;
 114         WCoreWindow *core;
 115         WWindow *wwin;
 116
 117         if (iter == NULL) {
 118                 core = WMBagFirst(bag, &iter);
 119         } else {
 120                 core = WMBagNext(bag, &iter);
 121         }
 122
 123         if (core == NULL)
 124                 return;
 125
 126         restoreWindows(bag, iter);
 127
 128         /* go to the end of the list */
 129         while (core->stacking->under)
 130                 core = core->stacking->under;
 131
 132         while (core) {
 133                 next = core->stacking->above;
 134
 135                 if (core->descriptor.parent_type == WCLASS_WINDOW) {
 136                         Window window;
 137
 138                         wwin = core->descriptor.parent;
 139                         window = wwin->client_win;
 140                         wUnmanageWindow(wwin, !wwin->flags.internal_window, False);
 141                         XMapWindow(dpy, window);
 142                 }
 143                 core = next;
 144         }
 145 }
 146
 147 /*
 148  *----------------------------------------------------------------------
 149  * RestoreDesktop--
 150  *      Puts the desktop in a usable state when exiting.
 151  *
 152  * Side effects:
 153  *      All frame windows are removed and windows are reparented
 154  * back to root. Windows that are outside the screen are
 155  * brought to a viable place.
 156  *
 157  *----------------------------------------------------------------------
 158  */
 159 void RestoreDesktop(WScreen * scr)
 160 {
 161         if (scr->helper_pid > 0) {
 162                 kill(scr->helper_pid, SIGTERM);
 163                 scr->helper_pid = 0;
 164         }
 165
 166         XGrabServer(dpy);
 167         wDestroyInspectorPanels();
 168
 169         /* reparent windows back to the root window, keeping the stacking order */
 170         restoreWindows(scr->stacking_list, NULL);
 171
 172         XUngrabServer(dpy);
 173         XSetInputFocus(dpy, PointerRoot, RevertToParent, CurrentTime);
 174         wColormapInstallForWindow(scr, NULL);
 175         PropCleanUp(scr->root_win);
 176         wNETWMCleanup(scr);
 177         XSync(dpy, 0);
 178 }
 179
 180 /*
 181  *----------------------------------------------------------------------
 182  * wipeDesktop--
 183  *      Kills all windows in a screen. Send DeleteWindow to all windows
 184  * that support it and KillClient on all windows that don't.
 185  *
 186  * Side effects:
 187  *      All managed windows are closed.
 188  *
 189  * TODO: change to XQueryTree()
 190  *----------------------------------------------------------------------
 191  */
 192 static void wipeDesktop(WScreen * scr)
 193 {
 194         WWindow *wwin;
 195
 196         wwin = scr->focused_window;
 197         while (wwin) {
 198                 if (wwin->protocols.DELETE_WINDOW)
 199                         wClientSendProtocol(wwin, _XA_WM_DELETE_WINDOW, LastTimestamp);
 200                 else
 201                         wClientKill(wwin);
 202                 wwin = wwin->prev;
 203         }
 204         XSync(dpy, False);
 205 }