[yambar.sway] Don't spam placeholders when sway isn't running

yambar/config.yml

@@ -94,7 +94,11 @@ bar:
           ws_focused: &ws_focused {foreground: *col_fg,         <<: *ws_common}
           ws_visible: &ws_visible {foreground: *col_visible_ws, <<: *ws_common}
         content:
-          - list:
+          - map:
+              conditions:
+                ~sway_running: {empty: {}}
+              default:
+                list:
                   spacing: 0
                   items:
                     - map:

yambar/sway.py

@@ -6,6 +6,7 @@ import socket
 import struct
 import json
 import traceback
+import time
 from typing import List
 
 
@@ -19,7 +20,14 @@ magic = b"i3-ipc"
 msg_header = struct.Struct("II")
 
 s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-s.connect(os.getenvb(b"SWAYSOCK"))
+SWAYSOCK = os.getenvb(b"SWAYSOCK")
+if not SWAYSOCK:
+	while True:
+		# print("\n".join(result), flush=True)
+		print("sway_running|bool|false\n", flush=True)
+		time.sleep(60 * 60 * 60)
+
+s.connect(SWAYSOCK)
 
 def recv():
 	reply_magic = s.recv(6)
@@ -90,6 +98,7 @@ def print_state():
 	global state_mode
 	print(f"""{format_workspaces(state_workspaces)}
 mode|string|{state_mode}
+sway_running|bool|true
 """, flush=True)
 
 print_state()