SunlightAggregationTerminal/InfoPage.xaml.cs

using CommunityToolkit.Mvvm.Messaging;
using Microsoft.Maui.Controls;
using Microsoft.Maui.Controls.PlatformConfiguration.WindowsSpecific;
using SunlightAggregationTerminal.Class;
using SunlightAggregationTerminal.Models;
using System.Collections.ObjectModel;

namespace SunlightAggregationTerminal;

public partial class InfoPage : ContentPage
{
    public static ObservableCollection<InfoItem> InfoItems { get; set; } = new();
    private DateTime _lastRefreshTime = DateTime.MinValue;
    public static string? _Name, _State, _MachineName, _Machine, _Information, _Model,
        _Type, _ModelA, _ModelB, _ModelC, _ModelD, _ModelE, _ModelF;


    public InfoPage()
    {
        InitializeComponent();
               
        CardCollectionView.ItemsSource = InfoItems;
        // 注册订阅一个不携带数据的消息（使用 object 作为泛型）
        WeakReferenceMessenger.Default.Register<object>(this, (r, m) =>
        {
            // 收到信号，直接触发函数
            HandleUITrigger();
        });
        //注册当前页面的下滑刷新
        myRefreshView_.Refreshing += (sender, e) => {
            // 5秒防抖判断：如果距离上次刷新不足5秒，直接取消本次操作
            if ((DateTime.Now - _lastRefreshTime).TotalSeconds < 5)
            {
                myRefreshView_.IsRefreshing = false;
                return;
            }

            try
            {
                // 更新刷新时间
                _lastRefreshTime = DateTime.Now;

                TcpServer.TcpTransmit("{\"Command\":\"Info\"}");
            }
            catch (Exception)
            {
            }
        };
    }
    private void HandleUITrigger()
    {
        InfoItems.Clear();
        foreach (Dictionary<string, object> List in DataModel.Info_data)
        {
            if (List.TryGetValue("Name", out var val) && val != null) _Name = val.ToString()!;
            if (List.TryGetValue("State", out val) && val != null) _State = val.ToString()!;
            if (List.TryGetValue("MachineName", out val) && val != null) _MachineName = val.ToString()!;
            if (List.TryGetValue("Machine", out val) && val != null) _Machine = val.ToString()!;
            if (List.TryGetValue("Information", out val) && val != null) _Information = val.ToString()!;
            if (List.TryGetValue("Type", out val) && val != null) _Type = val.ToString()!;
            if (List.TryGetValue("Model", out val) && val != null) _Model = val.ToString()!;
            if (List.TryGetValue("ModelA", out val) && val != null) _ModelA = val.ToString()!;
            if (List.TryGetValue("ModelB", out val) && val != null) _ModelB = val.ToString()!;
            if (List.TryGetValue("ModelC", out val) && val != null) _ModelC = val.ToString()!;
            if (List.TryGetValue("ModelD", out val) && val != null) _ModelD = val.ToString()!;
            if (List.TryGetValue("ModelE", out val) && val != null) _ModelE = val.ToString()!;
            if (List.TryGetValue("ModelF", out val) && val != null) _ModelF = val.ToString()!;

            InfoItems.Add(new InfoItem
            {
                Name = _Name,
                State = _State,
                MachineName = _MachineName,
                Machine = _Machine,
                Information = _Information,
                Type = _Type,
                Model = _Model,
                ModelA = _ModelA,
                ModelB = _ModelB,
                ModelC = _ModelC,
                ModelD = _ModelD,
                ModelE = _ModelE,
                ModelF = _ModelF
            });

        }
        CardCollectionView.ItemsSource = InfoItems;
        myRefreshView_.IsRefreshing = false;
    }

    ~InfoPage()//关闭时注销消息
    {
        WeakReferenceMessenger.Default.UnregisterAll(this);
    }
   
    private void TapGestureRecognizer_Tapped(object sender, TappedEventArgs e)
    {
        // 将 sender 强制转换为  BindingContext 定义在 BindableObject 
        if (sender is Microsoft.Maui.Controls.BindableObject bindable)
        {
            var context = bindable.BindingContext;

            if (context is InfoItem item)
            {
                DisplayAlert("提示", $"你点击了工单: {item.MachineName}", "确定");

            }
        }
    }
}