Allow containers to float

Things worth noting:

* When a fullscreen view unmaps, the check to unset fullscreen on the
workspace has been moved out of view_unmap and into container_destroy,
because containers can be fullscreen too
* The calls to `container_reap_empty_recursive(workspace)` have been
removed from `container_set_floating`. That function reaps upwards so it
wouldn't do anything. I'm probably the one who originally added it...
* My fix (b14bd1b0b1536039e4f46fe94515c7c44e7afc61) for the tabbed child
crash has a side effect where when you close a floating container, focus
is not given to the tiled container again. I've removed my fix and
removed the call to `send_cursor_motion` from `seat_set_focus_warp`. We
should consider calling it from somewhere earlier in the call stack.

1 files changed, 8 insertions, 2 deletions

diff --git a/sway/commands/move.c b/sway/commands/move.c
index aede3d6c..b127c89f 100644
--- a/sway/commands/move.c
+++ b/sway/commands/move.c
@@ -298,9 +298,15 @@ static struct cmd_results *move_to_position(struct sway_container *container,
 }
 
 static struct cmd_results *move_to_scratchpad(struct sway_container *con) {
-	if (con->type != C_CONTAINER && con->type != C_VIEW) {
+	if (con->type == C_WORKSPACE && con->children->length == 0) {
 		return cmd_results_new(CMD_INVALID, "move",
-				"Only views and containers can be moved to the scratchpad");
+				"Can't move an empty workspace to the scratchpad");
+	}
+	if (con->type == C_WORKSPACE) {
+		// Wrap the workspace's children in a container
+		struct sway_container *workspace = con;
+		con = container_wrap_children(con);
+		workspace->layout = L_HORIZ;
 	}
 	if (con->scratchpad) {
 		return cmd_results_new(CMD_INVALID, "move",