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 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) => {
            // 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 < 1)
            {
                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)
        {
            var mapping = new Dictionary<string, Action<InfoItem, string>>
            {
                { "Name", (obj, val) => obj.Name = val },
                { "State", (obj, val) => obj.State = val },  
                { "MachineName", (obj, val) => obj.MachineName = val },  
                { "Machine", (obj, val) => obj.Machine = val },  
                { "Information", (obj, val) => obj.Information = val },  
                { "Type", (obj, val) => obj.Type = val }, 
                { "Model", (obj, val) => obj.Model = val }, 
                { "ModelA", (obj, val) => obj.ModelA = val },  
                { "ModelB", (obj, val) => obj.ModelB = val }, 
                { "ModelC", (obj, val) => obj.ModelC = val }, 
                { "ModelD", (obj, val) => obj.ModelD = val },  
                { "ModelE", (obj, val) => obj.ModelE = val },   
                { "ModelF", (obj, val) => obj.ModelF = val } 
            };

            var info = new InfoItem();
            foreach (var (key, action) in mapping)
            {
                if (List.TryGetValue(key, out var val) && val != null)
                {
                    action(info, val.ToString()!);
                }
            }
            InfoItems.Add(info);
        }
        CardCollectionView.ItemsSource = InfoItems;
        myRefreshView_.IsRefreshing = false;
    }

    ~InfoPage()//关闭时注销消息
    {
        WeakReferenceMessenger.Default.UnregisterAll(this);
    }
   
    private async 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)
            {
                await Navigation.PushAsync(new InfoDetail(item));
            }
        }
    }
}