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/*
* Copyright © 2006 Novell, Inc.
* Copyright (C) 2012-2021 MATE Developers
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include "delayed-dialog.h"
static gboolean delayed_show_timeout (gpointer data);
static GdkFilterReturn message_filter (GdkXEvent *xevent,
GdkEvent *event,
gpointer data);
static GSList *dialogs = NULL;
/**
* msd_delayed_show_dialog:
* @dialog: the dialog
*
* Shows the dialog as with gtk_widget_show(), unless a window manager
* hasn't been started yet, in which case it will wait up to 5 seconds
* for that to happen before showing the dialog.
**/
void
msd_delayed_show_dialog (GtkWidget *dialog)
{
GdkDisplay *display = gtk_widget_get_display (dialog);
Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
GdkScreen *screen = gtk_widget_get_screen (dialog);
char selection_name[10];
Atom selection_atom;
/* We can't use gdk_selection_owner_get() for this, because
* it's an unknown out-of-process window.
*/
snprintf (selection_name, sizeof (selection_name), "WM_S%d",
gdk_x11_screen_get_screen_number (screen));
selection_atom = XInternAtom (xdisplay, selection_name, True);
if (selection_atom &&
XGetSelectionOwner (xdisplay, selection_atom) != None) {
gtk_widget_show (dialog);
return;
}
dialogs = g_slist_prepend (dialogs, dialog);
gdk_window_add_filter (NULL, message_filter, NULL);
g_timeout_add (5000, delayed_show_timeout, NULL);
}
static gboolean
delayed_show_timeout (gpointer data)
{
GSList *l;
for (l = dialogs; l; l = l->next)
gtk_widget_show (l->data);
g_slist_free (dialogs);
dialogs = NULL;
/* FIXME: There's no gdk_display_remove_client_message_filter */
return FALSE;
}
static GdkFilterReturn
message_filter (GdkXEvent *xevent, GdkEvent *event, gpointer data)
{
XClientMessageEvent *evt;
char *selection_name;
int screen;
GSList *l, *next;
if (((XEvent *)xevent)->type != ClientMessage)
return GDK_FILTER_CONTINUE;
evt = (XClientMessageEvent *)xevent;
if (evt->message_type != XInternAtom (evt->display, "MANAGER", FALSE))
return GDK_FILTER_CONTINUE;
selection_name = XGetAtomName (evt->display, evt->data.l[1]);
if (strncmp (selection_name, "WM_S", 4) != 0) {
XFree (selection_name);
return GDK_FILTER_CONTINUE;
}
screen = atoi (selection_name + 4);
for (l = dialogs; l; l = next) {
GtkWidget *dialog = l->data;
next = l->next;
if (gdk_x11_screen_get_screen_number (gtk_widget_get_screen (dialog)) == screen) {
gtk_widget_show (dialog);
dialogs = g_slist_remove (dialogs, dialog);
}
}
if (!dialogs) {
gdk_window_remove_filter (NULL, message_filter, NULL);
}
XFree (selection_name);
return GDK_FILTER_CONTINUE;
}
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