WIP: page setup minus my-stuff

MobileApp1/Helpers/ContentPageHelper.cs

@@ -1,45 +1,69 @@
-using Xamarin.Forms;
+using System;
+using Xamarin.Forms;
 
 namespace MobileApp1.Views
 {
     public class ContentPageHelper
     {
 
-        public static App GetApp(ContentPage view)
+        public static App GetApp(ContentPage view) => GetParentElement<App>(view);
+
+        public static Application GetApplication(ContentPage view) => GetParentElement<Application>(view);
+
+        public static MainPage GetMainPage(ContentPage view) => GetParentElement<MainPage>(view);
+
+        public static T GetParentElement<T>(ContentPage view)
         {
-            if (view == null) return null;
+            if (view == null) return default(T);
 
             Element item = view.Parent;
 
             while (true)
             {
                 if (item == null) break;
-                if (item is App) break;
+                if (item is T) break;
 
                 item = item.Parent;
             }
 
-            return (item as App);
-        }
-
-        public static Application GetApplication(ContentPage view)
-        {
-            if (view == null) return null;
-
-            Element item = view.Parent;
-
-            while (true)
+            try
             {
-                if (item == null) break;
-                if (item is Application) break;
-
-                item = item.Parent;
+                return (T)Convert.ChangeType(item, typeof(T));
+            }
+            catch (InvalidCastException)
+            {
+                return default(T);
             }
-
-            return (item as Application);
         }
 
-        public static void SetMainPage(ContentPage view, Page page)
+        public static void SetDetailPage(ContentPage view, Type pageType, bool useNavigationPage = true) => SetDetailPage(view, (Page)Activator.CreateInstance(pageType), useNavigationPage);
+
+        public static void SetDetailPage(ContentPage view, Page page, bool useNavigationPage = true)
+        {
+            if (view == null) return;
+            if (view.Parent == null) return;
+            if (page == null) return;
+
+            MainPage rs = GetMainPage(view);
+            if (rs == null)
+            {
+                return;
+            }
+
+            Device.BeginInvokeOnMainThread(() =>
+            {
+                if (useNavigationPage)
+                {
+                    rs.Detail = new NavigationPage(page);
+                }
+                else
+                {
+                    rs.Detail = page;
+                }
+            });
+        }
+
+        public static void SetMainPage(ContentPage view, Page page, bool useNavigationPage = false)
         {
             if (view == null) return;
             if (view.Parent == null) return;
@@ -51,8 +75,17 @@ namespace MobileApp1.Views
                 return;
             }
 
-            //rs.MainPage = new NavigationPage(new PasswordResetPage());
-            rs.MainPage = page;
+            Device.BeginInvokeOnMainThread(() =>
+            {
+                if (useNavigationPage)
+                {
+                    rs.MainPage = new NavigationPage(page);
+                }
+                else
+                {
+                    rs.MainPage = page;
+                }
+            });
         }
 
         public static async void PushMainPageNavigation(ContentPage view, Page page)

MobileApp1/Helpers/ContentViewHelper.cs

@@ -6,24 +6,13 @@ namespace MobileApp1.Views
     public class ContentViewHelper
     {
 
-        public static ContentPage GetContentPage(ContentView view)
-        {
-            if (view == null) return null;
+        public static App GetApp(ContentView view) => GetParentElement<App>(view);
 
-            Element item = view.Parent;
+        public static Application GetApplication(ContentView view) => GetParentElement<Application>(view);
 
-            while (true)
-            {
-                if (item == null) break;
-                if (item is ContentPage) break;
+        public static ContentPage GetContentPage(ContentView view) => GetParentElement<ContentPage>(view);
 
-                item = item.Parent;
-            }
-
-            return (item as ContentPage);
-        }
-
-        public static T GetContentPage<T>(ContentView view)
+        public static T GetParentElement<T>(ContentView view)
         {
             if (view == null) return default(T);
 
@@ -47,40 +36,6 @@ namespace MobileApp1.Views
             }
         }
 
-        public static App GetApp(ContentView view)
-        {
-            if (view == null) return null;
-
-            Element item = view.Parent;
-
-            while (true)
-            {
-                if (item == null) break;
-                if (item is App) break;
-
-                item = item.Parent;
-            }
-
-            return (item as App);
-        }
-
-        public static Application GetApplication(ContentView view)
-        {
-            if (view == null) return null;
-
-            Element item = view.Parent;
-
-            while (true)
-            {
-                if (item == null) break;
-                if (item is Application) break;
-
-                item = item.Parent;
-            }
-
-            return (item as Application);
-        }
-
         public static void SetMainPage(ContentView view, Page page)
         {
             if (view == null) return;