123 lines
3.5 KiB
C#
123 lines
3.5 KiB
C#
using System.Collections.ObjectModel;
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using System.Collections.Specialized;
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using System.Windows;
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using CommunityToolkit.Mvvm.ComponentModel;
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using CommunityToolkit.Mvvm.Input;
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using ConeCalorimeter.Services;
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using Microsoft.Win32;
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namespace ConeCalorimeter.ViewModels;
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public sealed class RealtimeDataViewModel : PageViewModel
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{
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private readonly Action _closeAction;
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private readonly IExperimentDataService _experimentDataService;
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private readonly IRealtimeDataExportService _realtimeDataExportService;
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private string _statusText = string.Empty;
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public RealtimeDataViewModel(
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IExperimentDataService experimentDataService,
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IRealtimeDataExportService realtimeDataExportService,
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Action closeAction) : base("实时数据")
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{
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_experimentDataService = experimentDataService;
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_realtimeDataExportService = realtimeDataExportService;
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_closeAction = closeAction;
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Rows = [];
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CloseCommand = new RelayCommand(_closeAction);
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ClearCommand = new RelayCommand(ClearRows);
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ExportCommand = new RelayCommand(ExportRows);
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RebuildRows();
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_experimentDataService.Records.CollectionChanged += RecordsChanged;
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}
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public ObservableCollection<RealtimeDataRowViewModel> Rows { get; }
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public IRelayCommand CloseCommand { get; }
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public IRelayCommand ClearCommand { get; }
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public IRelayCommand ExportCommand { get; }
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public string StatusText
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{
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get => _statusText;
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private set => SetProperty(ref _statusText, value);
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}
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private void RecordsChanged(object? sender, NotifyCollectionChangedEventArgs e)
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{
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if (e.Action == NotifyCollectionChangedAction.Add && e.NewItems is not null)
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{
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foreach (var item in e.NewItems)
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{
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if (item is ConeCalorimeter.Models.RealtimeDataRecord record)
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{
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Rows.Add(new RealtimeDataRowViewModel(record));
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}
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}
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StatusText = $"记录数：{Rows.Count}";
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return;
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}
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RebuildRows();
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}
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private void RebuildRows()
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{
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Rows.Clear();
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foreach (var record in _experimentDataService.Records)
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{
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Rows.Add(new RealtimeDataRowViewModel(record));
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}
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StatusText = $"记录数：{Rows.Count}";
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}
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private void ClearRows()
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{
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_experimentDataService.ClearRecords();
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}
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private void ExportRows()
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{
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var records = _experimentDataService.Records.ToList();
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if (records.Count == 0)
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{
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StatusText = "没有可导出的数据";
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return;
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}
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var dialog = new SaveFileDialog
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{
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Title = "导出实时数据",
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Filter = "Excel 97-2003 工作簿 (*.xls)|*.xls",
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FileName = $"实时数据_{DateTime.Now:yyyyMMdd_HHmmss}.xls",
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DefaultExt = ".xls",
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AddExtension = true,
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OverwritePrompt = true
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};
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if (dialog.ShowDialog() != true)
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{
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StatusText = "已取消导出";
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return;
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}
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try
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{
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_realtimeDataExportService.Export(dialog.FileName, records);
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StatusText = $"已导出：{dialog.FileName}";
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}
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catch (Exception ex)
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{
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StatusText = $"导出失败：{ex.Message}";
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MessageBox.Show(StatusText, "导出实时数据", MessageBoxButton.OK, MessageBoxImage.Error);
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}
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}
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}
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