infineon_cs_hmi/uniper_hmi/UniperHMI/Common/ParamControlIntRangeVM.cs

using CommunityToolkit.Mvvm.ComponentModel;
using InfineonHMI.Common;
using System.ComponentModel.DataAnnotations;
using TwinCAT.TypeSystem;

namespace Common;

public sealed class InRangeAttribute(string propMin, string propMax) : ValidationAttribute
{
	public string PropMin { get; } = propMin;
	public string PropMax { get; } = propMax;

	protected override ValidationResult? IsValid(object? value, ValidationContext validationContext)
	{
		object instance = validationContext.ObjectInstance;
		int minValue = (int)(instance.GetType().GetProperty(PropMin)?.GetValue(instance) ?? 1);
		int maxValue = (int)(instance.GetType().GetProperty(PropMax)?.GetValue(instance) ?? 1);
		int tempValue = (int)(value ?? 1);

		if (tempValue <= maxValue && tempValue >= minValue)
			return ValidationResult.Success;

		return new($"Value has to be greater than {minValue} and smaller then {maxValue}");
	}
}

public sealed partial class ParamControlIntRangeVm : ObservableValidator, IDisposable, IChangeTrackingEx
{
	private int initValue;

	[ObservableProperty]
	private int iMin;

	[ObservableProperty]
	private int iMax;

	[ObservableProperty] private string sName;

	
	private int value;

	[InRangeAttribute(nameof(IMin), nameof(IMax))]
	public int Value
	{
		get => this.value;
		set
		{
			SetProperty(ref this.value, value, true);
			if (value >= IMin && value <= IMax)
			{
				
			}
		}
	}


	public ParamControlIntRangeVm()
	{
		SName = "No Name:";
		Value = 0;
		initValue = Value;
	}

	public void Dispose()
	{
	}

	public void AcceptChanges()
	{
		initValue = Value;
	}

	public bool IsChanged => initValue != Value;
	public void DiscardChanges()
	{
		Value = initValue;
	}
}