From a91f74c86c11ca4933f3eb02b970120812adb965 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Thu, 22 Feb 2024 17:21:57 +0100
Subject: [PATCH] fixed a crash bug when editing custom_settings

---
 config.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/config.cpp b/config.cpp
index c3b2b1b8..193381e9 100644
--- a/config.cpp
+++ b/config.cpp
@@ -340,6 +340,8 @@ struct custom_setting : public setting {
   function<void(char)> custom_viewer;
   function<cld()> custom_value;
   function<bool(void*)> custom_affect;
+  function<void(const string&)> custom_load;
+
   void show_edit_option(int key) override { custom_viewer(key); }
   supersaver *make_saver() override { throw hr_exception("make_saver for custom_setting"); }
   bool affects(void *v) override { return custom_affect(v); }
@@ -349,6 +351,14 @@ struct custom_setting : public setting {
       add_to_changed(this);
       }
     }
+  virtual void load_from(const string& s) {
+    if(saver) { saver->load(s); return; }
+    if(!custom_load) {
+      println(hlog, "cannot load parameter: ", parameter_name, " from: ", s);
+      throw hr_exception("parameter cannot be loaded");
+      }
+    custom_load(s);
+    }
   };
   
 struct local_parameter_set {
@@ -832,6 +842,7 @@ custom_setting* param_custom(T& val, const string& s, function<void(char)> menui
   u->custom_viewer = menuitem;
   u->custom_value = [&val] () { return (int) val; };
   u->custom_affect = [&val] (void *v) { return &val == v; };
+  u->custom_load = [&val] (const string& s) { val = (T) parseint(s); };
   u->default_key = key;
   u->is_editable = true;
   auto f = &*u;