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new file containing all the wacky mess I just added to a simple "click the
2002-04-13 Havoc Pennington <hp@pobox.com> * src/delete.c: new file containing all the wacky mess I just added to a simple "click the close button", contains all the dealing-with-dead-application cruft. Use metacity-window-demo to test by clicking the toolbar button that locks it up.
This commit is contained in:
Havoc Pennington
committed by
Havoc Pennington
Havoc Pennington
parent
f965726d15
commit
d02060e201
492
src/delete.c
Normal file
492
src/delete.c
Normal file
@@ -0,0 +1,492 @@
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/* Metacity window deletion */
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/*
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* Copyright (C) 2001 Havoc Pennington
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <config.h>
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#include "util.h"
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#include "window.h"
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#include "errors.h"
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#include <sys/types.h>
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#include <signal.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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static void meta_window_present_delete_dialog (MetaWindow *window);
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static void
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delete_ping_reply_func (MetaDisplay *display,
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Window xwindow,
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void *user_data)
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{
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MetaWindow *window = user_data;
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meta_topic (META_DEBUG_PING,
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"Got reply to delete ping for %s\n",
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window->desc);
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/* we do nothing */
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}
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static Window
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window_from_string (const char *str)
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{
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char *end;
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unsigned long l;
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end = NULL;
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l = strtoul (str, &end, 16);
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if (end == NULL || end == str)
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{
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meta_warning (_("Could not parse \"%s\" as an integer"),
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str);
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return None;
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}
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if (*end != '\0')
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{
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meta_warning (_("Did not understand trailing characters \"%s\" in string \"%s\""),
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end, str);
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return None;
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}
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return l;
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}
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static int
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pid_from_string (const char *str)
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{
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char *end;
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long l;
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end = NULL;
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l = strtol (str, &end, 10);
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if (end == NULL || end == str)
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{
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meta_warning (_("Could not parse \"%s\" as an integer"),
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str);
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return None;
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}
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if (*end != '\0')
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{
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meta_warning (_("Did not understand trailing characters \"%s\" in string \"%s\""),
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end, str);
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return None;
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}
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return l;
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}
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static gboolean
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parse_dialog_output (const char *str,
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int *pid_out,
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Window *win_out)
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{
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char **split;
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split = g_strsplit (str, "\n", 2);
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if (split && split[0] && split[1])
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{
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g_strchomp (split[0]);
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g_strchomp (split[1]);
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*pid_out = pid_from_string (split[0]);
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*win_out = window_from_string (split[1]);
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g_strfreev (split);
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return TRUE;
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}
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else
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{
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g_strfreev (split);
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meta_warning (_("Failed to parse message \"%s\" from dialog process\n"),
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str);
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return FALSE;
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}
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}
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static void
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search_and_destroy_window (int pid,
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Window xwindow)
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{
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/* Find the window with the given dialog PID,
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* double check that it matches "xwindow", then
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* kill the window.
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*/
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GSList *tmp;
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gboolean found;
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if (xwindow == None)
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{
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meta_topic (META_DEBUG_PING,
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"Window to destroy is None, doing nothing\n");
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return;
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}
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found = FALSE;
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tmp = meta_displays_list ();
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while (tmp != NULL)
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{
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GSList *windows = meta_display_list_windows (tmp->data);
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GSList *tmp2;
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tmp2 = windows;
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while (tmp2 != NULL)
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{
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MetaWindow *w = tmp2->data;
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if (w->dialog_pid == pid)
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{
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if (w->xwindow != xwindow)
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meta_topic (META_DEBUG_PING,
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"Dialog pid matches but not xwindow (0x%lx vs. 0x%lx)\n",
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w->xwindow, xwindow);
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else
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{
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meta_window_kill (w);
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found = TRUE;
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}
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}
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tmp2 = tmp2->next;
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}
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g_slist_free (windows);
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tmp = tmp->next;
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}
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if (!found)
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meta_topic (META_DEBUG_PING,
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"Did not find a window with dialog pid %d xwindow 0x%lx\n",
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pid, xwindow);
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}
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static void
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release_window_with_fd (int fd)
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{
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/* Find the window with the given dialog PID,
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* double check that it matches "xwindow", then
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* kill the window.
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*/
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GSList *tmp;
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gboolean found;
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found = FALSE;
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tmp = meta_displays_list ();
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while (tmp != NULL)
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{
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GSList *windows = meta_display_list_windows (tmp->data);
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GSList *tmp2;
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tmp2 = windows;
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while (tmp2 != NULL)
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{
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MetaWindow *w = tmp2->data;
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if (w->dialog_pid >= 0 &&
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w->dialog_pipe == fd)
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{
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meta_topic (META_DEBUG_PING,
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"Removing dialog with fd %d pid %d from window %s\n",
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fd, w->dialog_pid, w->desc);
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meta_window_free_delete_dialog (w);
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found = TRUE;
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}
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tmp2 = tmp2->next;
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}
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g_slist_free (windows);
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tmp = tmp->next;
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}
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if (!found)
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meta_topic (META_DEBUG_PING,
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"Did not find a window with a dialog pipe %d\n",
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fd);
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}
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static gboolean
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io_from_ping_dialog (GIOChannel *channel,
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GIOCondition condition,
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gpointer data)
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{
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meta_topic (META_DEBUG_PING,
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"IO handler from ping dialog, condition = %x\n",
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condition);
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if (condition & G_IO_IN)
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{
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char *str;
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int len;
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GError *err;
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/* Go ahead and block for all data from child */
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str = NULL;
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len = 0;
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err = NULL;
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g_io_channel_read_to_end (channel,
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&str, &len,
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&err);
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if (err)
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{
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meta_warning (_("Error reading from dialog display process: %s\n"),
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err->message);
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g_error_free (err);
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}
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meta_topic (META_DEBUG_PING,
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"Read %d bytes strlen %d \"%s\" from child\n",
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len, strlen (str), str);
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if (len > 0)
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{
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/* We're supposed to kill the given window */
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int pid;
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Window xwindow;
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if (parse_dialog_output (str, &pid, &xwindow))
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search_and_destroy_window (pid, xwindow);
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}
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g_free (str);
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}
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release_window_with_fd (g_io_channel_unix_get_fd (channel));
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/* Remove the callback */
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return FALSE;
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}
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static void
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delete_ping_timeout_func (MetaDisplay *display,
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Window xwindow,
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void *user_data)
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{
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MetaWindow *window = user_data;
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GError *err;
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int child_pid;
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int outpipe;
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char *argv[5];
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char *window_id_str;
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GIOChannel *channel;
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meta_topic (META_DEBUG_PING,
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"Got delete ping timeout for %s\n",
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window->desc);
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if (window->dialog_pid >= 0)
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{
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meta_window_present_delete_dialog (window);
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return;
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}
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window_id_str = g_strdup_printf ("0x%lx", window->xwindow);
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argv[0] = METACITY_LIBEXECDIR"/metacity-dialog";
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argv[1] = "--kill-window-question";
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argv[2] = window->title;
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argv[3] = window_id_str;
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argv[4] = NULL;
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err = NULL;
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if (!g_spawn_async_with_pipes ("/",
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argv,
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NULL,
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0,
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NULL, NULL,
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&child_pid,
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NULL,
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&outpipe,
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NULL,
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&err))
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{
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meta_warning (_("Error launching metacity-dialog to ask about killing an application: %s\n"),
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err->message);
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g_error_free (err);
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goto out;
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}
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window->dialog_pid = child_pid;
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window->dialog_pipe = outpipe;
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channel = g_io_channel_unix_new (window->dialog_pipe);
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g_io_add_watch_full (channel, G_PRIORITY_DEFAULT,
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G_IO_IN | G_IO_HUP | G_IO_ERR,
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io_from_ping_dialog,
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NULL, NULL);
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g_io_channel_unref (channel);
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out:
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g_free (window_id_str);
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}
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void
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meta_window_delete (MetaWindow *window,
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Time timestamp)
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{
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meta_error_trap_push (window->display);
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if (window->delete_window)
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{
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meta_topic (META_DEBUG_WINDOW_OPS,
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"Deleting %s with delete_window request\n",
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window->desc);
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meta_window_send_icccm_message (window,
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window->display->atom_wm_delete_window,
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timestamp);
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}
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else
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{
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meta_topic (META_DEBUG_WINDOW_OPS,
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"Deleting %s with explicit kill\n",
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window->desc);
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XKillClient (window->display->xdisplay, window->xwindow);
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}
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meta_error_trap_pop (window->display);
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meta_display_ping_window (window->display,
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window,
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timestamp,
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delete_ping_reply_func,
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delete_ping_timeout_func,
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window);
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if (window->has_focus)
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{
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/* This is unfortunately going to result in weirdness
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* if the window doesn't respond to the delete event.
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* I don't know how to avoid that though.
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*/
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meta_topic (META_DEBUG_FOCUS,
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"Focusing top window because focus window %s was deleted/killed\n",
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window->desc);
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meta_screen_focus_top_window (window->screen, window);
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}
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else
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{
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meta_topic (META_DEBUG_FOCUS,
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"Window %s was deleted/killed but didn't have focus\n",
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window->desc);
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}
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}
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void
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meta_window_kill (MetaWindow *window)
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{
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char buf[257];
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meta_topic (META_DEBUG_WINDOW_OPS,
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"Killing %s brutally\n",
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window->desc);
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if (window->wm_client_machine != NULL &&
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window->net_wm_pid > 0)
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{
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if (gethostname (buf, sizeof(buf)-1) == 0)
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{
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if (strcmp (buf, window->wm_client_machine) == 0)
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{
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meta_topic (META_DEBUG_WINDOW_OPS,
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"Killing %s with kill()\n",
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window->desc);
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if (kill (window->net_wm_pid, 9) < 0)
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meta_topic (META_DEBUG_WINDOW_OPS,
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"Failed to signal %s: %s\n",
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window->desc, strerror (errno));
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}
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}
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else
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{
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meta_warning (_("Failed to get hostname: %s\n"),
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strerror (errno));
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}
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}
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meta_topic (META_DEBUG_WINDOW_OPS,
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"Disconnecting %s with XKillClient()\n",
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window->desc);
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meta_error_trap_push (window->display);
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XKillClient (window->display->xdisplay, window->xwindow);
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meta_error_trap_pop (window->display);
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}
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void
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meta_window_free_delete_dialog (MetaWindow *window)
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{
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if (window->dialog_pid >= 0)
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{
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kill (window->dialog_pid, 9);
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close (window->dialog_pipe);
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window->dialog_pid = -1;
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window->dialog_pipe = -1;
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}
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}
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static void
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meta_window_present_delete_dialog (MetaWindow *window)
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{
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meta_topic (META_DEBUG_PING,
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"Presenting existing ping dialog for %s\n",
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window->desc);
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if (window->dialog_pid >= 0)
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{
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GSList *windows;
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GSList *tmp;
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/* Activate transient for window that belongs to
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* metacity-dialog
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*/
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windows = meta_display_list_windows (window->display);
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tmp = windows;
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while (tmp != NULL)
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{
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MetaWindow *w = tmp->data;
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if (w->xtransient_for == window->xwindow &&
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w->res_class &&
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g_strcasecmp (w->res_class, "metacity-dialog") == 0)
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{
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meta_window_activate (w,
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meta_display_get_current_time (w->display));
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break;
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}
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tmp = tmp->next;
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}
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g_slist_free (windows);
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}
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}
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Block a user