From dac2fa74c1410b47915857ef9650c1e00f6b1236 Mon Sep 17 00:00:00 2001
From: Pilzinsel64 <pascal.schedel@dr-schneider.com>
Date: Wed, 28 Aug 2024 11:12:52 +0200
Subject: [PATCH] add ThemeHelper

---
 Pilz.UI.Telerik/Theming/ApplicationTheme.cs |  9 +++++++
 Pilz.UI.Telerik/Theming/ThemeHelper.cs      | 30 +++++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 Pilz.UI.Telerik/Theming/ApplicationTheme.cs
 create mode 100644 Pilz.UI.Telerik/Theming/ThemeHelper.cs

diff --git a/Pilz.UI.Telerik/Theming/ApplicationTheme.cs b/Pilz.UI.Telerik/Theming/ApplicationTheme.cs
new file mode 100644
index 0000000..56e1cac
--- /dev/null
+++ b/Pilz.UI.Telerik/Theming/ApplicationTheme.cs
@@ -0,0 +1,9 @@
+namespace Pilz.UI.Telerik.Theming;
+
+public enum ApplicationTheme
+{
+    Auto,
+    Light,
+    Dark,
+    Gray,
+}
diff --git a/Pilz.UI.Telerik/Theming/ThemeHelper.cs b/Pilz.UI.Telerik/Theming/ThemeHelper.cs
new file mode 100644
index 0000000..141d5f5
--- /dev/null
+++ b/Pilz.UI.Telerik/Theming/ThemeHelper.cs
@@ -0,0 +1,30 @@
+using Telerik.WinControls;
+
+namespace Pilz.UI.Telerik.Theming;
+
+public static class ThemeHelper
+{
+    public static void ApplyApplicationTheme(ApplicationTheme theme, Func<RadThemeComponentBase> getLightTheme, Func<RadThemeComponentBase> getDarkTheme)
+    {
+        ApplyApplicationTheme(theme, getLightTheme, getDarkTheme, getDarkTheme);
+    }
+
+    public static void ApplyApplicationTheme(ApplicationTheme theme, Func<RadThemeComponentBase> getLightTheme, Func<RadThemeComponentBase> getDarkTheme, Func<RadThemeComponentBase> getGrayTheme)
+    {
+        ThemeResolutionService.ApplicationThemeName = GetThemeName(theme, getLightTheme, getDarkTheme, getGrayTheme).ThemeName;
+    }
+
+    public static RadThemeComponentBase GetThemeName(ApplicationTheme theme, Func<RadThemeComponentBase> getLightTheme, Func<RadThemeComponentBase> getDarkTheme, Func<RadThemeComponentBase> getGrayTheme)
+    {
+        RadThemeComponentBase? themeToUse;
+
+        if (theme == ApplicationTheme.Light || theme == ApplicationTheme.Auto && WindowsSettings.AppsUseLightTheme)
+            themeToUse = getLightTheme();
+        else if (theme == ApplicationTheme.Dark || theme == ApplicationTheme.Auto && !WindowsSettings.AppsUseLightTheme)
+            themeToUse = getDarkTheme();
+        else /*if (CoreSettings.AppTheme == ApplicationTheme.Gray)*/
+            themeToUse = getGrayTheme();
+
+        return themeToUse;
+    }
+}