Deny several commands when there's no outputs connected

1 files changed, 4 insertions, 0 deletions

diff --git a/sway/commands/swap.c b/sway/commands/swap.c
index afe11a47..a70a6cdd 100644
--- a/sway/commands/swap.c
+++ b/sway/commands/swap.c
@@ -171,6 +171,10 @@ struct cmd_results *cmd_swap(int argc, char **argv) {
         if ((error = checkarg(argc, "swap", EXPECTED_AT_LEAST, 4))) {
                 return error;
         }
+        if (!root->outputs->length) {
+                return cmd_results_new(CMD_INVALID, "swap",
+                                "Can't run this command while there's no outputs connected.");
+        }
 
         if (strcasecmp(argv[0], "container") || strcasecmp(argv[1], "with")) {
                 return cmd_results_new(CMD_INVALID, "swap", EXPECTED_SYNTAX);