From e05080c53b571b005748f05ae06007999ede86c1 Mon Sep 17 00:00:00 2001
From: YuSanka <yusanka@gmail.com>
Date: Tue, 27 Oct 2020 22:53:43 +0100
Subject: [PATCH] Fixed update of the field related to the "extruders_count"
 parameter after printer preset change

---
 src/slic3r/GUI/Tab.cpp | 10 ++++++++++
 src/slic3r/GUI/Tab.hpp |  1 +
 2 files changed, 11 insertions(+)

diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 11e4f2510..a2199d5a2 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -2717,6 +2717,16 @@ void TabPrinter::update_pages()
     rebuild_page_tree();
 }
 
+void TabPrinter::reload_config()
+{
+    Tab::reload_config();
+
+    // "extruders_count" doesn't update from the update_config(),
+    // so update it implicitly
+    if (m_active_page && m_active_page->title() == "General")
+        m_active_page->set_value("extruders_count", int(m_extruders_count));
+}
+
 void TabPrinter::activate_selected_page(std::function<void()> throw_if_canceled)
 {
     Tab::activate_selected_page(throw_if_canceled);
diff --git a/src/slic3r/GUI/Tab.hpp b/src/slic3r/GUI/Tab.hpp
index 8c00f825c..8b73b61be 100644
--- a/src/slic3r/GUI/Tab.hpp
+++ b/src/slic3r/GUI/Tab.hpp
@@ -465,6 +465,7 @@ public:
 	void		build_print_host_upload_group(Page* page);
     void		build_fff();
     void		build_sla();
+	void		reload_config() override;
 	void		activate_selected_page(std::function<void()> throw_if_canceled) override;
 	void		clear_pages() override;
 	void		toggle_options() override;