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