Budgeteer/BudgetApp/Components/ToastValidator.razor.cs

using BudgetApp.Services;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Forms;

namespace BudgetApp.Components;

public partial class ToastValidator
{
    [CascadingParameter] private EditContext? CurrentEditContext { get; set; }

    [Inject] private ToastService ToastService { get; set; } = default!;

    private bool _validationRequested;

    protected override void OnInitialized()
    {
        if (CurrentEditContext is not null)
        {
            CurrentEditContext.OnValidationRequested += OnValidationRequested;
            CurrentEditContext.OnValidationStateChanged += OnValidationStateChanged;
        }
    }

    private void OnValidationRequested(object? sender, ValidationRequestedEventArgs e)
    {
        _validationRequested = true;
    }

    private void OnValidationStateChanged(object? sender, ValidationStateChangedEventArgs e)
    {
        if (!_validationRequested || CurrentEditContext is null) return;
        _validationRequested = false;

        foreach (var message in CurrentEditContext.GetValidationMessages())
        {
            ToastService.Show(message);
        }
    }

    public void Dispose()
    {
        if (CurrentEditContext is not null)
        {
            CurrentEditContext.OnValidationRequested -= OnValidationRequested;
            CurrentEditContext.OnValidationStateChanged -= OnValidationStateChanged;
        }
    }
}