120 lines
3.8 KiB
C#
120 lines
3.8 KiB
C#
using UIShare.GlobalVariable;
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using Logger;
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using Prism.Ioc;
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using Prism.Mvvm;
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Threading;
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using UIShare.ViewModelBase;
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namespace TestingModule.ViewModels
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{
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public class LogAreaViewModel : NavigateViewModelBase, IDisposable
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{
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// 日志集合
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private ObservableCollection<LogItem> _logs = new();
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public ObservableCollection<LogItem> Logs
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{
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get => _logs;
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set => SetProperty(ref _logs, value);
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}
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public ICommand ClearLogCommand { get; set; }
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private readonly ScopedContext _scopedContext;
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private readonly GlobalInfo _globalInfo;
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/// <summary>UI 线程定时器，每 100ms 批量从 LogBuffer 出队并刷新</summary>
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private readonly DispatcherTimer _flushTimer;
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public LogAreaViewModel(IContainerProvider containerProvider) : base(containerProvider)
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{
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ClearLogCommand = new DelegateCommand(ClearLog);
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_scopedContext = containerProvider.Resolve<ScopedContext>();
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_globalInfo = containerProvider.Resolve<GlobalInfo>();
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// UI 线程定时器：每 100ms 从 ScopedContext.LogBuffer 批量出队并 Add
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_flushTimer = new DispatcherTimer(DispatcherPriority.Normal, System.Windows.Application.Current.Dispatcher)
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{
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Interval = TimeSpan.FromMilliseconds(100)
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};
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_flushTimer.Tick += FlushLogBuffer;
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_flushTimer.Start();
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}
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/// <summary>
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/// 定时批量刷新日志：一次性出队并 Add，WPF 对连续 Add 做合并渲染
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/// </summary>
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private void FlushLogBuffer(object? sender, EventArgs e)
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{
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if (_scopedContext.LogBuffer.IsEmpty || Logs == null) return;
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var batch = new List<(string Message, Brush Color, int Depth)>();
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while (_scopedContext.LogBuffer.TryDequeue(out var item))
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{
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batch.Add(item);
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}
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// 批量 Add，WPF 会对连续 Add 做合并渲染，只触发一次 layout/render pass
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foreach (var item in batch)
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{
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Logs.Add(new LogItem(item.Message, item.Color, item.Depth));
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}
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}
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private void ClearLog()
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{
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// 清空缓冲区，防止定时器下次还把旧数据刷出来
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while (_scopedContext.LogBuffer.TryDequeue(out _)) { }
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Logs?.Clear();
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}
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/// <summary>
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/// 完善后的资源释放方法
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/// </summary>
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public void Dispose()
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{
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try
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{
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// 停止定时器
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_flushTimer.Stop();
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_flushTimer.Tick -= FlushLogBuffer;
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// 最后一次刷新缓冲区中的剩余日志
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FlushLogBuffer(null, EventArgs.Empty);
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if (Logs != null)
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{
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Logs.Clear();
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Logs = null!;
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}
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}
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catch (Exception ex)
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{
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Logger.LoggerHelper.ErrorWithNotify(
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_scopedContext != null ? _globalInfo.CurrentScope : "",
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$"释放日志组件（LogAreaViewModel）资源失败: {ex.Message}");
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}
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}
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}
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// 日志条目类
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public class LogItem
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{
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public string Message { get; set; }
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public Brush Color { get; set; } = Brushes.Black;
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public int Depth { get; set; }
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public LogItem(string message, Brush color, int depth = 0)
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{
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Message = new string(' ', depth * 20) + message;
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Color = color;
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Depth = depth;
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}
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}
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}
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