add files

Pixiview/Utils/Extensions.cs

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+using Xamarin.Forms;
+
+namespace Pixiview.Utils
+{
+    public static class StatusBar
+    {
+        private const string StatusBarStyle = nameof(StatusBarStyle);
+
+        public static readonly BindableProperty StatusBarStyleProperty = BindableProperty.CreateAttached(
+            StatusBarStyle,
+            typeof(StatusBarStyles),
+            typeof(Page),
+            StatusBarStyles.WhiteText);
+
+        public static StatusBarStyles GetStatusBarStyle(VisualElement page) => (StatusBarStyles)page.GetValue(StatusBarStyleProperty);
+        public static void SetStatusBarStyle(VisualElement page, StatusBarStyles value) => page.SetValue(StatusBarStyleProperty, value);
+    }
+
+    public enum StatusBarStyles
+    {
+        Default,
+        // Will behave as normal. 
+        // White text on black NavigationBar/in iOS Dark mode and 
+        // Black text on white NavigationBar/in iOS Light mode
+        DarkText,
+        // Will switch the color of content of StatusBar to black. 
+        WhiteText,
+        // Will switch the color of content of StatusBar to white. 
+        Hidden
+        // Will hide the StatusBar
+    }
+}

Pixiview/Utils/IEnvironmentService.cs

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+
+namespace Pixiview.Utils
+{
+    public interface IEnvironmentService
+    {
+        EnvironmentParameter GetEnvironment();
+    }
+
+    public class EnvironmentParameter
+    {
+        public string IconLightFontFamily { get; set; }
+        public string IconRegularFontFamily { get; set; }
+        public string IconSolidFontFamily { get; set; }
+        public string IconLeft { get; set; }
+    }
+}

Pixiview/Utils/UIFactory.cs

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+using Xamarin.Forms;
+
+namespace Pixiview.Utils
+{
+    public static class UIFactory
+    {
+        public static NavigationPage CreateNavigationPage(Page root)
+        {
+            var navigation = new NavigationPage(root);
+            navigation.SetDynamicResource(NavigationPage.BarBackgroundColorProperty, App.MainColor);
+            navigation.SetDynamicResource(NavigationPage.BarTextColorProperty, App.MainTextColor);
+            navigation.SetDynamicResource(VisualElement.BackgroundColorProperty, App.WindowColor);
+            return navigation;
+        }
+    }
+}