82 lines
2.4 KiB
C#
82 lines
2.4 KiB
C#
using UIShare.GlobalVariable;
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using Logger;
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using Prism.Mvvm;
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using System.Collections.ObjectModel;
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using System.Reflection;
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using System.Windows;
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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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public LogAreaViewModel(IContainerProvider containerProvider) : base(containerProvider)
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{
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ClearLogCommand = new DelegateCommand(ClearLog);
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// 2. 保持原有逻辑，但请确保在 Dispose 中对其进行清理
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LoggerHelper.Progress = new System.Progress<(string message, string color, int depth)>(
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log =>
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{
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// 增加防御性代码：防止进入销毁流程时异步回调引发空引用异常
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if (Logs == null) return;
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var brush = (Brush)new BrushConverter().ConvertFromString(log.color);
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Logs.Add(new LogItem(log.message, brush, log.depth));
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});
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}
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private void ClearLog()
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{
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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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LoggerHelper.Progress = null!;
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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($"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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