97 lines
3.0 KiB
C#
97 lines
3.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Threading;
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namespace ShrlAlgo.Addin.Test
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{
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// 用于给外界调用的报告器
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public class ProgressReporter
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{
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private readonly ProgressViewModel _viewModel;
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private DateTime _lastUpdate = DateTime.MinValue;
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public ProgressReporter(ProgressViewModel viewModel)
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{
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_viewModel = viewModel;
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}
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/// <summary>
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/// 更新进度 (自带节流控制，防止频繁更新导致UI卡顿)
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/// </summary>
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public void Report(int current, int total, string message = null)
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{
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// 限制 UI 刷新频率（每 50 毫秒最多刷新一次）
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if ((DateTime.Now - _lastUpdate).TotalMilliseconds < 50 && current != total)
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return;
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_lastUpdate = DateTime.Now;
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_viewModel.Update(current, total, message);
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}
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public void ReportMessage(string message) => _viewModel.UpdateMessage(message);
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}
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// WPF 的 ViewModel
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public class ProgressViewModel : INotifyPropertyChanged
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{
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private readonly CancellationTokenSource _cts;
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public Dispatcher UIDispatcher { get; set; }
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public Action CloseAction { get; set; }
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public ProgressViewModel(string title, CancellationTokenSource cts)
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{
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Title = title;
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_cts = cts;
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}
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private string _title;
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public string Title { get => _title; set => SetProperty(ref _title, value); }
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private string _message = "正在准备...";
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public string Message { get => _message; set => SetProperty(ref _message, value); }
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private double _progressValue;
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public double ProgressValue { get => _progressValue; set => SetProperty(ref _progressValue, value); }
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private double _maximum = 100;
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public double Maximum { get => _maximum; set => SetProperty(ref _maximum, value); }
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public void Cancel()
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{
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if (!_cts.IsCancellationRequested)
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{
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Message = "正在取消任务，请稍候...";
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_cts.Cancel();
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}
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}
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// 跨线程更新 UI
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public void Update(int current, int total, string message)
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{
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UIDispatcher?.InvokeAsync(() =>
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{
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ProgressValue = current;
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Maximum = total;
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if (!string.IsNullOrEmpty(message)) Message = message;
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});
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}
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public void UpdateMessage(string message)
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{
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UIDispatcher?.InvokeAsync(() => Message = message);
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}
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public event PropertyChangedEventHandler PropertyChanged;
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protected void SetProperty<T>(ref T field, T value, [CallerMemberName] string propertyName = null)
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{
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field = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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}
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}
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