Implement focus handling for containers

The previous implementation of focus handling assumed that only views can be
focused. Containers can also be focused with a command like `focus parent` or
`focus child`.

Change `set_focused_container()` to handle the case of the given container
being a container with children and update borders accordingly.

1 files changed, 5 insertions, 0 deletions

diff --git a/include/border.h b/include/border.h
index b629ba46..b61b0f8a 100644
--- a/include/border.h
+++ b/include/border.h
@@ -16,6 +16,11 @@ struct border {
  */
 void border_clear(struct border *border);
 
+/**
+ * Recursively update all of the borders within a container.
+ */
+void update_container_border(swayc_t *container);
+
 void render_view_borders(wlc_handle view);
 void update_view_border(swayc_t *view);
 void map_update_view_border(swayc_t *view, void *data);