From a1f9749490fcef22bb682a763ae77a2b54c36c15 Mon Sep 17 00:00:00 2001
From: Mike James <hello@mikejames.dev>
Date: Mon, 25 Jan 2021 11:10:49 +0000
Subject: [PATCH] Fixing FluentTheme Expanded header foreground issue

My first attempt at contributing!

This commit adds a style selector to ensure that the Expanded control keeps its foreground when expanded. Fixes #5349

Tested with 0.10.0 with both Light and Dark themes.
---
 src/Avalonia.Themes.Fluent/Controls/Expander.xaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Avalonia.Themes.Fluent/Controls/Expander.xaml b/src/Avalonia.Themes.Fluent/Controls/Expander.xaml
index ad0fd18ea5..a6371a5be9 100644
--- a/src/Avalonia.Themes.Fluent/Controls/Expander.xaml
+++ b/src/Avalonia.Themes.Fluent/Controls/Expander.xaml
@@ -26,6 +26,9 @@
       </ControlTemplate>
     </Setter>
   </Style>
+  <Style Selector="Expander[IsExpanded=true] /template/ ToggleButton#PART_toggle /template/ ContentPresenter#PART_ContentPresenter">
+    <Setter Property="TextBlock.Foreground" Value="{DynamicResource ToggleButtonForeground}"/>
+  </Style>
   <Style Selector="Expander[ExpandDirection=Up]">
     <Setter Property="Template">
       <ControlTemplate>