From 684ff50ef4931aeb8cfb15c5a2d62e55520f04a5 Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Thu, 21 Mar 2024 10:50:23 +1100
Subject: Add support for screens declaring that they can't be popped

Needed as prep for usb msc support; you really shouldn't leave the MSC
settings screen until you've disabled usb msc.
---
 src/ui/ui_fsm.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/ui/ui_fsm.cpp')

diff --git a/src/ui/ui_fsm.cpp b/src/ui/ui_fsm.cpp
index 0ed012a0..c11f66a7 100644
--- a/src/ui/ui_fsm.cpp
+++ b/src/ui/ui_fsm.cpp
@@ -610,6 +610,9 @@ auto Lua::QueuePrevious(lua_State*) -> int {
 }
 
 auto Lua::PopLuaScreen(lua_State* s) -> int {
+  if (!sCurrentScreen->canPop()) {
+    return 0;
+  }
   PopScreen();
   luavgl_set_root(s, sCurrentScreen->content());
   lv_group_set_default(sCurrentScreen->group());
-- 
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