From 68cb9c2d92cb6bfefb79dd8f2395a0e6b0562006 Mon Sep 17 00:00:00 2001
From: Raphael Coeffic <raphael.coeffic@frafos.com>
Date: Wed, 23 Jun 2021 12:49:42 +0200
Subject: [PATCH] [color] Patch unavailabel global/special function if not
 available

Resolves #295
---
 radio/src/gui/colorlcd/special_functions.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/radio/src/gui/colorlcd/special_functions.cpp b/radio/src/gui/colorlcd/special_functions.cpp
index 3faf9d9ad..f60ca8a17 100644
--- a/radio/src/gui/colorlcd/special_functions.cpp
+++ b/radio/src/gui/colorlcd/special_functions.cpp
@@ -384,10 +384,23 @@ class SpecialFunctionEditPage : public Page
     });
     grid.nextLine();
 
+    // Patch function in case not available
+    if (!isAssignableFunctionAvailable(CFN_FUNC(cfn), functions)) {
+      auto func = 0;
+      while(!isAssignableFunctionAvailable(func, functions)
+            && (func < FUNC_MAX - 1)) {
+        func++;
+      }
+      if (func < FUNC_MAX - 1) {
+        CFN_FUNC(cfn) = func;
+      }
+    }
+    
     // Function
     new StaticText(window, grid.getLabelSlot(), STR_FUNC);
     auto functionChoice =
-        new Choice(window, grid.getFieldSlot(), STR_VFSWFUNC, 0, FUNC_MAX - 1,
+        new Choice(window, grid.getFieldSlot(), STR_VFSWFUNC,
+                   0, FUNC_MAX - 1,
                    GET_DEFAULT(CFN_FUNC(cfn)));
     functionChoice->setSetValueHandler([=](int32_t newValue) {
       CFN_FUNC(cfn) = newValue;