[gnome-builder] workbench: add each window to its own group

[Christian Hergert <chergert src gnome org>]

commit 3913edaff108c6034279a6732d557960cf6cc455
Author: Dimitrios Christidis <dimitrios christidis me>
Date:   Wed Jan 4 15:48:30 2017 +0200

    workbench: add each window to its own group
    
    This fixes a bug that blocked interactions on all windows when a modal
    dialog appeared.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=776864

 libide/workbench/ide-workbench.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/libide/workbench/ide-workbench.c b/libide/workbench/ide-workbench.c
index ea167d1..f6e1303 100644
--- a/libide/workbench/ide-workbench.c
+++ b/libide/workbench/ide-workbench.c
@@ -416,6 +416,8 @@ ide_workbench_class_init (IdeWorkbenchClass *klass)
 static void
 ide_workbench_init (IdeWorkbench *self)
 {
+  GtkWindowGroup *window_group = NULL;
+
   gtk_widget_init_template (GTK_WIDGET (self));
 
   self->perspectives = g_list_store_new (IDE_TYPE_PERSPECTIVE);
@@ -427,6 +429,10 @@ ide_workbench_init (IdeWorkbench *self)
                            G_CALLBACK (ide_workbench_notify_visible_child),
                            self,
                            G_CONNECT_SWAPPED);
+
+  window_group = gtk_window_group_new ();
+  gtk_window_group_add_window (window_group, GTK_WINDOW (self));
+  g_object_unref (window_group);
 }
 
 static void