[Fix] 20 Autocomplete Bug (alternative solution) (#155)

* Fix the problem

* Rename file

---------

Co-authored-by: Vincent Wilms <[email protected]>

src/Nexus.UI/Components/Leftbar_Settings.razor

@@ -16,7 +16,7 @@
         Label="Period"
         CoerceValue="true"
         SearchFunc="_ => Task.FromResult(_values.AsEnumerable())"
-        Converter="PeriodHelper.Converter" />
+        Converter="PeriodHelper.CreateConverter(getCurrentValue: () => AppState.Settings.SamplePeriod)" />
 </div>
 
 @code {

src/Nexus.UI/Components/Rightbar_Settings.razor

@@ -9,7 +9,7 @@
         Label="File Period"
         CoerceValue="true"
         SearchFunc="_ => Task.FromResult(_values.AsEnumerable())"
-        Converter="PeriodHelper.Converter" />
+        Converter="PeriodHelper.CreateConverter(getCurrentValue: () => AppState.Settings.FilePeriod)" /> />
 
     @if (AppState.Settings.WriterDescriptions is not null)
     {

src/Nexus.UI/Controls/UIAutocomplete.razor

@@ -22,9 +22,4 @@
         //https://github.com/MudBlazor/MudBlazor/issues/6535
         await SetValueAsync(value!, updateText: false);
     }
-
-    protected override async Task SetValueAsync(T value, bool updateText = true, bool force = false)
-    {
-        await base.SetValueAsync(value, updateText, force);
-    }
 }

src/Nexus.UI/Core/Period.cs

@@ -0,0 +1,63 @@
+// MIT License
+// Copyright (c) [2024] [nexus-main]
+
+using MudBlazor;
+
+namespace Nexus.UI.Core;
+
+public record Period
+{
+    internal const string SINGLE_FILE_LABEL = "Single File";
+
+    public Period(TimeSpan value)
+    {
+        Value = value;
+    }
+
+    public TimeSpan Value { get; }
+
+    public override string ToString()
+    {
+        return Value.Equals(default)
+            ? SINGLE_FILE_LABEL
+            : Utilities.ToUnitString(Value);
+    }
+}
+
+public static class PeriodHelper
+{
+    public static Converter<Period> CreateConverter(Func<Period> getCurrentValue)
+    {
+        return new()
+        {
+            SetFunc = value => value != null ? value.ToString() : "",
+            GetFunc = text => GetFunc(text, getCurrentValue())
+        };
+    }
+
+    private static Period GetFunc(string? text, Period currentValue)
+    {
+        /* Whenever the input is invalid, the current value of the 
+         * autocomplete input this converter belongs to is returned. 
+         * This ensures that the input's current value does not change
+         * which in turn allows the user to continue typing until a
+         * valid value is entered. A valid value is a number + unit, 
+         * e.g. "10 min".
+         */
+
+        if (text is null)
+            return currentValue;
+
+        try
+        {
+            return text == Period.SINGLE_FILE_LABEL
+                ? new Period(TimeSpan.Zero)
+                : new Period(Utilities.ToPeriod(text));
+        }
+
+        catch
+        {
+            return currentValue;
+        }
+    }
+}