Trigger workspace init event (floating)

Triggers workspace init event when moving a floating window to a new
workspace.

This is a follow up on #391 which didn't handle floating windows.

1 files changed, 8 insertions, 1 deletions

diff --git a/sway/layout.c b/sway/layout.c
index 563e9d11..d32f3dd0 100644
--- a/sway/layout.c
+++ b/sway/layout.c
@@ -308,7 +308,14 @@ void move_container_to(swayc_t* container, swayc_t* destination) {
         swayc_t *parent = remove_child(container);
         // Send to new destination
         if (container->is_floating) {
-                add_floating(swayc_active_workspace_for(destination), container);
+                swayc_t *ws = swayc_active_workspace_for(destination);
+                add_floating(ws, container);
+
+                // If the workspace only has one child after adding one, it
+                // means that the workspace was just initialized.
+                if (ws->children->length + ws->floating->length == 1) {
+                        ipc_event_workspace(NULL, ws, "init");
+                }
         } else if (destination->type == C_WORKSPACE) {
                 // reset container geometry
                 container->width = container->height = 0;