[gnome-builder/wip/greeter] greeter: allow keynav between list boxes

[Christian Hergert <chergert src gnome org>]

commit 700b8407adcebdeeb2b885572711f7d445a95b11
Author: Christian Hergert <christian hergert me>
Date:   Sun May 10 22:41:32 2015 -0700

    greeter: allow keynav between list boxes

 src/greeter/gb-greeter-window.c |   34 ++++++++++++++++++++++++++++++++++
 1 files changed, 34 insertions(+), 0 deletions(-)
---
diff --git a/src/greeter/gb-greeter-window.c b/src/greeter/gb-greeter-window.c
index e0e9b54..3d983e9 100644
--- a/src/greeter/gb-greeter-window.c
+++ b/src/greeter/gb-greeter-window.c
@@ -348,6 +348,28 @@ gb_greeter_window__row_activated (GbGreeterWindow     *self,
                                      g_object_ref (self));
 }
 
+static gboolean
+gb_greeter_window__keynav_failed (GbGreeterWindow  *self,
+                                  GtkDirectionType  dir,
+                                  GtkListBox       *list_box)
+{
+  g_assert (GB_IS_GREETER_WINDOW (self));
+  g_assert (GTK_IS_LIST_BOX (list_box));
+
+  if ((list_box == self->my_projects_list_box) && (dir == GTK_DIR_DOWN))
+    {
+      gtk_widget_child_focus (GTK_WIDGET (self->other_projects_list_box), GTK_DIR_DOWN);
+      return GDK_EVENT_STOP;
+    }
+  else if ((list_box == self->other_projects_list_box) && (dir == GTK_DIR_UP))
+    {
+      gtk_widget_child_focus (GTK_WIDGET (self->my_projects_list_box), GTK_DIR_UP);
+      return GDK_EVENT_STOP;
+    }
+
+  return GDK_EVENT_PROPAGATE;
+}
+
 static void
 gb_greeter_window_constructed (GObject *object)
 {
@@ -471,12 +493,24 @@ gb_greeter_window_init (GbGreeterWindow *self)
                            self,
                            G_CONNECT_SWAPPED);
 
+  g_signal_connect_object (self->my_projects_list_box,
+                           "keynav-failed",
+                           G_CALLBACK (gb_greeter_window__keynav_failed),
+                           self,
+                           G_CONNECT_SWAPPED);
+
   g_signal_connect_object (self->other_projects_list_box,
                            "row-activated",
                            G_CALLBACK (gb_greeter_window__row_activated),
                            self,
                            G_CONNECT_SWAPPED);
 
+  g_signal_connect_object (self->other_projects_list_box,
+                           "keynav-failed",
+                           G_CALLBACK (gb_greeter_window__keynav_failed),
+                           self,
+                           G_CONNECT_SWAPPED);
+
   gtk_list_box_set_header_func (self->my_projects_list_box,
                                 gb_gtk_list_box_row_separator_func,
                                 NULL, NULL);