home page for App

FlowerApp/Controls/AppContentPage.cs

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+namespace Blahblah.FlowerApp;
+
+public class AppContentPage : ContentPage
+{
+    protected static string L(string key, string defaultValue = "")
+    {
+        return LocalizationResource.GetText(key, defaultValue);
+    }
+
+    protected static Task<T?> FetchAsync<T>(string url, CancellationToken cancellation = default)
+    {
+        return Extensions.FetchAsync<T>(url, cancellation);
+    }
+
+    protected T GetValue<T>(BindableProperty property)
+    {
+        return (T)GetValue(property);
+    }
+
+    protected Task AlertError(string error)
+    {
+        return Alert(LocalizationResource.GetText("error", "Error"), error);
+    }
+
+    protected Task Alert(string title, string message, string? cancel = null)
+    {
+        cancel ??= LocalizationResource.GetText("ok", "Ok");
+
+        if (MainThread.IsMainThread)
+        {
+            return DisplayAlert(title, message, cancel);
+        }
+        var taskSource = new TaskCompletionSource();
+        MainThread.BeginInvokeOnMainThread(async () =>
+        {
+            await DisplayAlert(title, message, cancel);
+            taskSource.TrySetResult();
+        });
+        return taskSource.Task;
+    }
+
+    protected Task<bool> Confirm(string title, string question, string? accept = null, string? cancel = null)
+    {
+        accept ??= LocalizationResource.GetText("yes", "Yes");
+        cancel ??= LocalizationResource.GetText("no", "No");
+
+        if (MainThread.IsMainThread)
+        {
+            return DisplayAlert(title, question, accept, cancel);
+        }
+        var taskSource = new TaskCompletionSource<bool>();
+        MainThread.BeginInvokeOnMainThread(async () =>
+        {
+            var result = await DisplayAlert(title, question, accept, cancel);
+            taskSource.TrySetResult(result);
+        });
+        return taskSource.Task;
+    }
+}