Use noop output when there's no outputs connected

Instead of having NULL workspace->output pointers, use a noop output.
This should be safer.

2 files changed, 4 insertions, 1 deletions

diff --git a/include/sway/server.h b/include/sway/server.h
index 0f30653f..9242ceb7 100644
--- a/include/sway/server.h
+++ b/include/sway/server.h
@@ -24,6 +24,7 @@ struct sway_server {
 	const char *socket;
 
 	struct wlr_backend *backend;
+	struct wlr_backend *noop_backend;
 
 	struct wlr_compositor *compositor;
 	struct wlr_data_device_manager *data_device_manager;
diff --git a/include/sway/tree/root.h b/include/sway/tree/root.h
index ceccc920..8f4deaa7 100644
--- a/include/sway/tree/root.h
+++ b/include/sway/tree/root.h
@@ -31,7 +31,9 @@ struct sway_root {
 
 	list_t *outputs; // struct sway_output
 	list_t *scratchpad; // struct sway_container
-	list_t *saved_workspaces; // For when there's no connected outputs
+
+	// For when there's no connected outputs
+	struct sway_output *noop_output;
 
 	struct {
 		struct wl_signal new_node;