Version 3.0.337

TINKLib/Services/ThemeNS/ITheme.cs

@@ -0,0 +1,18 @@
+
+namespace TINK.Services.ThemeNS
+{
+    /// <summary>
+    /// Set of available app themes
+    /// </summary>
+    public enum ThemeSet
+    {
+        ShareeBike,
+        Konrad,
+        LastenradBayern
+    }
+
+    public interface ITheme
+    {
+        void SetActiveTheme(string themeName);
+    }
+}

TINKLib/Services/ThemeNS/Theme.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using Xamarin.Forms;
+
+namespace TINK.Services.ThemeNS
+{
+    /// <summary>
+    /// Manges themeing functionalty.
+    /// Objects ResourceDictionary, Themes.Konrad, ... need Xamarin.Forms framework to be initialized which might break tests.
+    /// </summary>
+    public class Theme : ITheme
+    {
+        private ICollection<ResourceDictionary> _MergedDictionaries;
+
+        public Theme(ICollection<ResourceDictionary> mergedDictionaries)
+        {
+            _MergedDictionaries = mergedDictionaries ?? throw new ArgumentNullException(nameof(mergedDictionaries));
+        }
+
+        /// <summary>
+        /// Sets active theme. 
+        /// </summary>
+        /// <param name="themeName">Name of the new active theme.</param>
+        public void SetActiveTheme(string themeName)
+        {
+            if (!Enum.TryParse(themeName, false, out ThemeSet theme))
+                return;
+
+            if (_MergedDictionaries == null)
+                return;
+
+            _MergedDictionaries.Clear();
+
+            switch (theme)
+            {
+                case ThemeSet.Konrad:
+                    _MergedDictionaries.Add(new Themes.Konrad());
+                    break;
+
+                case ThemeSet.LastenradBayern:
+                    _MergedDictionaries.Add(new Themes.LastenradBayern());
+                    break;
+
+                default:
+                    _MergedDictionaries.Add(new Themes.ShareeBike());
+                    break;
+            }
+        }
+    }
+}