[gnome-bluetooth] settings-widget: Replace gtk_dialog_run() by a mainloop

[Bastien Nocera <hadess src gnome org>]

commit c25cad5aca09b31b9f60ee43fb6a03b61bfa53b7
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Oct 27 14:13:58 2021 -0300

    settings-widget: Replace gtk_dialog_run() by a mainloop
    
    gtk_dialog_run() was removed from GTK4, but we can still mimic its behavior
    using a custom GMainLoop.

 lib/bluetooth-settings-widget.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)
---
diff --git a/lib/bluetooth-settings-widget.c b/lib/bluetooth-settings-widget.c
index b81ea8a3..720bcb9e 100644
--- a/lib/bluetooth-settings-widget.c
+++ b/lib/bluetooth-settings-widget.c
@@ -1312,11 +1312,25 @@ name_changed (BluetoothClient  *client,
        update_visibility (self);
 }
 
+static void
+confirm_dialog_response_cb (GtkDialog *dialog,
+                           gint       response,
+                           gpointer   user_data)
+{
+       GMainLoop *mainloop = g_object_get_data (G_OBJECT (dialog), "mainloop");
+       int *out_response = user_data;
+
+       *out_response = response;
+
+       g_main_loop_quit (mainloop);
+}
+
 static gboolean
 show_confirm_dialog (BluetoothSettingsWidget *self,
                     const char *name)
 {
        BluetoothSettingsWidgetPrivate *priv = BLUETOOTH_SETTINGS_WIDGET_GET_PRIVATE (self);
+       g_autoptr(GMainLoop) mainloop = NULL;
        GtkWidget *dialog;
        gint response;
 
@@ -1330,7 +1344,11 @@ show_confirm_dialog (BluetoothSettingsWidget *self,
        gtk_dialog_add_button (GTK_DIALOG (dialog), _("_Cancel"), GTK_RESPONSE_CANCEL);
        gtk_dialog_add_button (GTK_DIALOG (dialog), _("_Remove"), GTK_RESPONSE_ACCEPT);
 
-       response = gtk_dialog_run (GTK_DIALOG (dialog));
+       mainloop = g_main_loop_new (NULL, FALSE);
+       g_object_set_data (G_OBJECT (dialog), "mainloop", mainloop);
+       g_signal_connect (dialog, "response", G_CALLBACK (confirm_dialog_response_cb), &response);
+
+       g_main_loop_run (mainloop);
 
        gtk_window_destroy (GTK_WINDOW (dialog));