inabox/inabox.wpf/DigitalForms/Designer/Controls/Fields/DFTimeControl.cs

using InABox.Core;
using Syncfusion.Windows.Shared;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace InABox.DynamicGrid
{
    public class DFTimeControl : DynamicFormFieldControl<DFLayoutTimeField, DFLayoutTimeFieldProperties, TimeSpan>
    {
        private DateTimeEdit Time = null!; // late-initialising

        protected override FrameworkElement Create()
        {
            Time = new DateTimeEdit();
            Time.DateTimeFormat = CultureInfo.CurrentCulture.DateTimeFormat;
            Time.Pattern = DateTimePattern.ShortTime;
            Time.DateTime = DateTime.MinValue.Add(Field.Properties.Default);
            Time.DateTimeChanged += (sender, e) => ChangeField();
            Time.EnableMouseWheelEdit = false;
            return Time;
        }

        public override void Deserialize(string serialized)
        {
            if (TimeSpan.TryParseExact(serialized, "c", CultureInfo.InvariantCulture, TimeSpanStyles.None,
                    out TimeSpan t))
                SetValue(t);
        }

        public override string Serialize() => GetValue().ToString("c");

        public override TimeSpan GetValue() => Time.DateTime?.TimeOfDay ?? TimeSpan.Zero;

        public override void SetValue(TimeSpan value) => Time.DateTime = DateTime.MinValue.Add(value);

        protected override bool IsEmpty() => Time.DateTime == null;
    }
}