mapo-core/MP.MON.Client/Components/CmpFooter.razor.cs

using Microsoft.AspNetCore.Components;
using Microsoft.JSInterop;
using System;

namespace MP.MON.Client.Components
{
    public partial class CmpFooter : ComponentBase, IDisposable
    {
        #region Public Properties

        [Parameter]
        public int slowRefreshSec { get; set; } = 300;

        [Parameter]
        public Version version { get; set; } = null!;

        #endregion Public Properties

        #region Public Methods

        public void Dispose()
        {
            if (aTimer != null)
            {
                aTimer.Stop();
                aTimer.Dispose();
            }
        }

        public void ElapsedTimer(object? source, System.Timers.ElapsedEventArgs e)
        {
            // dispongo i vari timers...
            disposeTimers();
            Console.WriteLine("Elapsed Slow Timer --> full page reload");
            // reload pagina intera
            NavManager.NavigateTo(NavManager.Uri, true);
        }

        public void StartTimer()
        {
            // timer lento
            aTimer = new System.Timers.Timer(slowRefreshMs);
            aTimer.Elapsed += ElapsedTimer;
            aTimer.Enabled = true;
            aTimer.Start();
        }

        #endregion Public Methods

        #region Public Classes

        public class WindowDimension
        {
            #region Public Properties

            public int Height { get; set; }
            public int Width { get; set; }

            #endregion Public Properties
        }

        #endregion Public Classes

        #region Protected Properties

        [Inject]
        protected IJSRuntime JSRuntime { get; set; } = null!;

        [Inject]
        protected NavigationManager NavManager { get; set; } = null!;

        protected int slowRefreshMs
        {
            get
            {
                // tempo variabile tra +/- 10% del target
                int answ = rnd.Next(900, 1100) * slowRefreshSec;
                return answ;
            }
        }

        #endregion Protected Properties

        #region Protected Methods

        protected async Task getWDim()
        {
            var dimension = await JSRuntime.InvokeAsync<WindowDimension>("getWindowDimensions");
            Height = dimension.Height;
            Width = dimension.Width;
        }

        protected override async Task OnAfterRenderAsync(bool firstRender)
        {
            if (firstRender)
            {
                await getWDim();
                StateHasChanged();
                StartTimer();
                Console.WriteLine($"Footer | Dimensioni schermo: {Width}x{Height} | slowRefreshSec: {slowRefreshSec}");
            }
            Console.WriteLine($"Footer | OnAfterRenderAsync completato");
        }

        protected override void OnInitialized()
        {
            rnd = new Random();
            Console.WriteLine($"Footer | OnInitialized completato");
        }

        #endregion Protected Methods

        #region Private Fields

        private static System.Timers.Timer aTimer = null!;
        private Random rnd;

        #endregion Private Fields

        #region Private Properties

        private int Height { get; set; } = 0;

        private int Width { get; set; } = 0;

        #endregion Private Properties

        #region Private Methods

        private void disposeTimers()
        {
            aTimer.Elapsed -= ElapsedTimer;
            aTimer.Stop();
            aTimer.Dispose();
        }

        #endregion Private Methods
    }
}