Implement `focus child` command

The `focus child` command focuses the child container within the selected
container.

1 files changed, 4 insertions, 0 deletions

diff --git a/sway/layout.c b/sway/layout.c
index 1d5944f8..cd5a31bc 100644
--- a/sway/layout.c
+++ b/sway/layout.c
@@ -1009,6 +1009,10 @@ static swayc_t *get_swayc_in_output_direction(swayc_t *output, enum movement_dir
 }
 
 swayc_t *get_swayc_in_direction_under(swayc_t *container, enum movement_direction dir, swayc_t *limit) {
+        if (dir == MOVE_CHILD) {
+                return container->focused;
+        }
+
         swayc_t *parent = container->parent;
         if (dir == MOVE_PARENT) {
                 if (parent->type == C_OUTPUT) {