Deny several commands when there's no outputs connected

1 files changed, 4 insertions, 0 deletions

diff --git a/sway/commands/fullscreen.c b/sway/commands/fullscreen.c
index 0204a73c..ff7cbba7 100644
--- a/sway/commands/fullscreen.c
+++ b/sway/commands/fullscreen.c
@@ -12,6 +12,10 @@ struct cmd_results *cmd_fullscreen(int argc, char **argv) {
 	if ((error = checkarg(argc, "fullscreen", EXPECTED_AT_MOST, 1))) {
 		return error;
 	}
+	if (!root->outputs->length) {
+		return cmd_results_new(CMD_INVALID, "fullscreen",
+				"Can't run this command while there's no outputs connected.");
+	}
 	struct sway_node *node = config->handler_context.node;
 	struct sway_container *container = config->handler_context.container;
 	struct sway_workspace *workspace = config->handler_context.workspace;