1 files changed, 122 insertions, 0 deletions
diff --git a/plugins/font/delayed-dialog.c b/plugins/font/delayed-dialog.c
new file mode 100644
index 0000000..bfc8493
--- /dev/null
+++ b/plugins/font/delayed-dialog.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright © 2006 Novell, Inc.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, 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;
+
+/**
+ * mate_settings_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
+mate_settings_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);
+        GdkAtom manager_atom;
+        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_screen_get_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);
+
+        manager_atom = gdk_atom_intern ("MANAGER", FALSE);
+        gdk_display_add_client_message_filter (display, manager_atom,
+                                               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 = (XClientMessageEvent *)xevent;
+        char *selection_name = XGetAtomName (evt->display, evt->data.l[1]);
+        int screen;
+        GSList *l, *next;
+
+        if (!dialogs)
+                return GDK_FILTER_CONTINUE;
+
+        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_screen_get_number (gtk_widget_get_screen (dialog)) == screen) {
+                        gtk_widget_show (dialog);
+                        dialogs = g_slist_remove (dialogs, dialog);
+                }
+        }
+
+        if (!dialogs) {
+                /* FIXME: There's no gdk_display_remove_client_message_filter */
+        }
+
+        return GDK_FILTER_CONTINUE;
+}