From 3a90b3beb65270b7c51ef865be892b035d8979f3 Mon Sep 17 00:00:00 2001
From: Kyle Spearrin <kyle.spearrin@gmail.com>
Date: Fri, 29 Mar 2019 21:23:34 -0400
Subject: [PATCH] theme manager

---
 src/App/App.xaml.cs               | 18 ++----------------
 src/App/Utilities/ThemeManager.cs | 25 +++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 16 deletions(-)
 create mode 100644 src/App/Utilities/ThemeManager.cs

diff --git a/src/App/App.xaml.cs b/src/App/App.xaml.cs
index 4ee26492a..69550ff96 100644
--- a/src/App/App.xaml.cs
+++ b/src/App/App.xaml.cs
@@ -1,4 +1,5 @@
 using Bit.App.Pages;
+using Bit.App.Utilities;
 using System;
 using System.Reflection;
 using Xamarin.Forms;
@@ -14,22 +15,7 @@ namespace Bit.App
         {
             InitializeComponent();
 
-            // TODO: Load theme?
-            if(false)
-            {
-#pragma warning disable CS0162 // Unreachable code detected
-                Resources.Add(
-#pragma warning restore CS0162 // Unreachable code detected
-                    StyleSheet.FromAssemblyResource(IntrospectionExtensions.GetTypeInfo(typeof(App)).Assembly,
-                    "Bit.App.Css.dark.css"));
-            }
-            Resources.Add(
-                StyleSheet.FromAssemblyResource(IntrospectionExtensions.GetTypeInfo(typeof(App)).Assembly,
-                "Bit.App.Css.styles.css"));
-            Resources.Add(
-                StyleSheet.FromAssemblyResource(IntrospectionExtensions.GetTypeInfo(typeof(App)).Assembly,
-                $"Bit.App.Css.{Device.RuntimePlatform.ToLowerInvariant()}.css"));
-
+            ThemeManager.SetTheme("dark");
             MainPage = new TabsPage();
         }
 
diff --git a/src/App/Utilities/ThemeManager.cs b/src/App/Utilities/ThemeManager.cs
new file mode 100644
index 000000000..26bb30242
--- /dev/null
+++ b/src/App/Utilities/ThemeManager.cs
@@ -0,0 +1,25 @@
+using System.Reflection;
+using Xamarin.Forms;
+using Xamarin.Forms.StyleSheets;
+
+namespace Bit.App.Utilities
+{
+    public static class ThemeManager
+    {
+        public static void SetTheme(string name)
+        {
+            var themeFormat = "Bit.App.Css.{0}.css";
+            var assembly = IntrospectionExtensions.GetTypeInfo(typeof(App)).Assembly;
+            // Other supported theme names can be added here.
+            if(name == "dark")
+            {
+                Application.Current.Resources.Add(StyleSheet.FromAssemblyResource(assembly,
+                    string.Format(themeFormat, name)));
+            }
+            Application.Current.Resources.Add(StyleSheet.FromAssemblyResource(assembly,
+                string.Format(themeFormat, Device.RuntimePlatform.ToLowerInvariant())));
+            Application.Current.Resources.Add(StyleSheet.FromAssemblyResource(assembly,
+                string.Format(themeFormat, "styles")));
+        }
+    }
+}