443 lines
16 KiB
C#
443 lines
16 KiB
C#
using System.Collections.ObjectModel;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Text.Json;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls.Primitives;
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using YY.Admin.Core.Services;
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using YY.Admin.ViewModels.RawMaterialEntry;
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namespace YY.Admin.Views.RawMaterialEntry;
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/// <summary>
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/// 需显式实现 <see cref="INotifyPropertyChanged"/>，否则 WPF 绑定不会订阅 PropertyChanged，
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/// 界面会一直停留在属性初始值（例如 PrinterStatus 的「加载打印机中…」）。
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/// </summary>
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public partial class RawMaterialCardGenerateConfirmWindow : HandyControl.Controls.Window, INotifyPropertyChanged
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{
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private const int PrinterLoadTimeoutMs = 8000;
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private const double DefaultLeftRatio = 0.7d;
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private const double MinLeftRatio = 0.2d;
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private const double MaxLeftRatio = 0.8d;
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private static readonly JsonSerializerOptions LayoutJsonOpts = new() { WriteIndented = true };
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private static string LayoutFilePath => Path.Combine(
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Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
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"YY.Admin",
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"raw-material-card-generate-confirm-layout.json");
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public ObservableCollection<RawMaterialCardGeneratePlanRow> PlanItems { get; } = new();
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public string HeaderText { get; }
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public string TemplateText { get; }
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public ObservableCollection<PrintDotPrinter> Printers { get; } = new();
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private readonly Func<RawMaterialCardGeneratePlanRow, string> _previewHtmlBuilder;
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private readonly IPrintDotService _printDotService;
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private bool _webViewReady;
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/// <summary>增大表示又有新的预览请求，旧的后台渲染结果应丢弃。</summary>
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private int _previewVersion;
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private bool _isRefreshingPrinters;
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private bool _suppressPrinterSave;
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/// <summary>Loaded 中批量赋值选中行时跳过 Setter 内的去抖预览，再由 Loaded 单次立即刷新。</summary>
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private bool _suppressPreviewSchedule;
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private string? _preferredPrinterNameOnLoad;
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private string _printerStatus = "加载打印机中...";
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public string PrinterStatus
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{
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get => _printerStatus;
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set
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{
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if (string.Equals(_printerStatus, value, StringComparison.Ordinal)) return;
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_printerStatus = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(PrinterStatus)));
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}
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}
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private PrintDotPrinter? _selectedPrinter;
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public PrintDotPrinter? SelectedPrinter
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{
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get => _selectedPrinter;
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set
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{
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if (ReferenceEquals(_selectedPrinter, value)) return;
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_selectedPrinter = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(SelectedPrinter)));
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if (_suppressPrinterSave) return;
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SaveLayout(dto => dto.SelectedPrinterName = value?.Name ?? string.Empty);
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}
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}
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public string SelectedPrinterName => SelectedPrinter?.Name?.Trim() ?? string.Empty;
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private RawMaterialCardGeneratePlanRow? _selectedPlanItem;
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public RawMaterialCardGeneratePlanRow? SelectedPlanItem
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{
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get => _selectedPlanItem;
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set
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{
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if (ReferenceEquals(_selectedPlanItem, value)) return;
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_selectedPlanItem = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(SelectedPlanItem)));
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// 仅用属性变更触发预览刷新，避免 SelectionChanged + 绑定 双重 Navigate 造成卡顿
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if (!_suppressPreviewSchedule)
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{
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SchedulePreviewNavigate(skipDebounce: false);
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}
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}
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}
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public event PropertyChangedEventHandler? PropertyChanged;
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public RawMaterialCardGenerateConfirmWindow(
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IReadOnlyList<RawMaterialEntryOperationViewModel.RawMaterialCardGeneratePlanItem> planItems,
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string templateName,
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string templateCode,
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IPrintDotService printDotService,
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Func<RawMaterialCardGeneratePlanRow, string> previewHtmlBuilder)
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{
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InitializeComponent();
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_printDotService = printDotService;
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_previewHtmlBuilder = previewHtmlBuilder;
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HeaderText = $"共 {planItems.Count} 张，左侧展示即将生成的原材料卡片，右侧展示业务关联打印模板预览。";
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TemplateText = $"模板：{templateName}（{templateCode}）";
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var idx = 0;
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foreach (var item in planItems)
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{
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idx++;
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PlanItems.Add(new RawMaterialCardGeneratePlanRow
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{
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Index = idx,
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SourceRowNo = item.SourceRowNo,
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DetailId = item.DetailId,
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Card = item.Card
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});
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}
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DataContext = this;
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Loaded += OnLoadedAsync;
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Closing += OnClosing;
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}
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private async void OnLoadedAsync(object? sender, RoutedEventArgs e)
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{
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var layout = LoadSavedLayout();
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ApplyPaneRatio(layout.LeftPaneRatio ?? DefaultLeftRatio);
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ApplySavedColumnWidths(layout.ColumnWidths);
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_preferredPrinterNameOnLoad = layout.SelectedPrinterName;
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await RefreshPrintersAsync(verbose: false);
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try
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{
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await PreviewWebView.EnsureCoreWebView2Async();
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_webViewReady = true;
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try
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{
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_suppressPreviewSchedule = true;
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if (SelectedPlanItem == null && PlanItems.Count > 0)
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{
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SelectedPlanItem = PlanItems[0];
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}
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}
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finally
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{
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_suppressPreviewSchedule = false;
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}
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SchedulePreviewNavigate(skipDebounce: true);
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}
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catch
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{
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PreviewWebView.NavigateToString("<html><body style='font-family:Microsoft YaHei;padding:24px;color:#eee;background:#525659;'>模板预览加载失败</body></html>");
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}
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}
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private async void RefreshPrintersButton_OnClick(object sender, RoutedEventArgs e)
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{
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await RefreshPrintersAsync(verbose: true);
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}
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private void MainSplitter_OnDragCompleted(object sender, DragCompletedEventArgs e)
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{
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SavePaneRatio(GetCurrentLeftRatio());
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}
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private double GetCurrentLeftRatio()
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{
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var left = LeftPaneCol.ActualWidth;
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var right = RightPaneCol.ActualWidth;
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var total = left + right;
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if (total <= 0.1d) return DefaultLeftRatio;
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return Math.Clamp(left / total, MinLeftRatio, MaxLeftRatio);
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}
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private void ApplyPaneRatio(double ratio)
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{
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var leftRatio = Math.Clamp(ratio, MinLeftRatio, MaxLeftRatio);
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LeftPaneCol.Width = new GridLength(leftRatio, GridUnitType.Star);
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RightPaneCol.Width = new GridLength(1d - leftRatio, GridUnitType.Star);
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}
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private static ConfirmWindowLayoutDto LoadSavedLayout()
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{
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try
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{
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if (!File.Exists(LayoutFilePath)) return new ConfirmWindowLayoutDto();
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var json = File.ReadAllText(LayoutFilePath);
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var dto = JsonSerializer.Deserialize<ConfirmWindowLayoutDto>(json, LayoutJsonOpts);
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if (dto is null) return new ConfirmWindowLayoutDto();
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if (dto.LeftPaneRatio is > 0 and < 1)
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dto.LeftPaneRatio = Math.Clamp(dto.LeftPaneRatio.Value, MinLeftRatio, MaxLeftRatio);
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return dto;
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}
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catch
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{
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// 布局缓存异常时使用默认比例，不影响主流程
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}
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return new ConfirmWindowLayoutDto();
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}
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private static void SavePaneRatio(double leftRatio)
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{
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SaveLayout(dto => { dto.LeftPaneRatio = Math.Clamp(leftRatio, MinLeftRatio, MaxLeftRatio); });
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}
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private static void SaveLayout(Action<ConfirmWindowLayoutDto> mutator)
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{
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try
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{
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var dir = Path.GetDirectoryName(LayoutFilePath);
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if (!string.IsNullOrWhiteSpace(dir))
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{
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Directory.CreateDirectory(dir);
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}
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var dto = LoadSavedLayout();
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mutator(dto);
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File.WriteAllText(LayoutFilePath, JsonSerializer.Serialize(dto, LayoutJsonOpts));
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}
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catch
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{
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// 写入失败不阻断页面交互
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}
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}
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private void ApplySavedColumnWidths(Dictionary<string, double>? columnWidths)
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{
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if (columnWidths is null || columnWidths.Count == 0) return;
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for (var index = 0; index < PlanGrid.Columns.Count; index++)
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{
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var column = PlanGrid.Columns[index];
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var key = GetColumnWidthKey(column, index);
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if (!columnWidths.TryGetValue(key, out var cachedWidth) || cachedWidth <= 0) continue;
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var minWidth = column.MinWidth > 0 ? column.MinWidth : 40d;
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column.Width = new System.Windows.Controls.DataGridLength(
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Math.Max(cachedWidth, minWidth),
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System.Windows.Controls.DataGridLengthUnitType.Pixel);
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}
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}
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private void SaveCurrentColumnWidths()
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{
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if (PlanGrid.Columns.Count == 0) return;
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var widths = new Dictionary<string, double>(StringComparer.Ordinal);
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for (var index = 0; index < PlanGrid.Columns.Count; index++)
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{
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var column = PlanGrid.Columns[index];
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var width = column.ActualWidth;
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if (double.IsNaN(width) || double.IsInfinity(width) || width <= 0) continue;
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widths[GetColumnWidthKey(column, index)] = width;
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}
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if (widths.Count == 0) return;
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SaveLayout(dto => dto.ColumnWidths = widths);
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}
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private static string GetColumnWidthKey(System.Windows.Controls.DataGridColumn column, int index)
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{
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var header = column.Header?.ToString();
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if (string.IsNullOrWhiteSpace(header))
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return $"col-{index.ToString(CultureInfo.InvariantCulture)}";
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return $"col-{index.ToString(CultureInfo.InvariantCulture)}-{header.Trim()}";
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}
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private void OnClosing(object? sender, CancelEventArgs e)
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{
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Interlocked.Increment(ref _previewVersion);
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SavePaneRatio(GetCurrentLeftRatio());
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SaveCurrentColumnWidths();
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}
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private async Task RefreshPrintersAsync(bool verbose)
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{
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if (_isRefreshingPrinters) return;
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_isRefreshingPrinters = true;
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const string loadingText = "加载打印机中...";
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PrinterStatus = verbose ? "刷新打印机中..." : loadingText;
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try
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{
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using var cts = new CancellationTokenSource();
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var fetchTask = _printDotService.GetPrintersAsync(cts.Token);
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var timeoutTask = Task.Delay(PrinterLoadTimeoutMs);
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var completedTask = await Task.WhenAny(fetchTask, timeoutTask);
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if (!ReferenceEquals(completedTask, fetchTask))
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{
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cts.Cancel();
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throw new TimeoutException("获取打印机列表超时");
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}
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var list = await fetchTask;
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Printers.Clear();
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foreach (var printer in list) Printers.Add(printer);
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// 先更新状态，避免后续本地缓存逻辑异常导致“加载中”残留
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PrinterStatus = list.Count > 0 ? $"共 {list.Count} 台打印机" : "未检测到打印机";
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var preferred = _preferredPrinterNameOnLoad;
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if (string.IsNullOrWhiteSpace(preferred))
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{
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preferred = SelectedPrinter?.Name;
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}
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var match = list.FirstOrDefault(p => string.Equals(p.Name, preferred, StringComparison.OrdinalIgnoreCase))
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?? list.FirstOrDefault(p => p.IsDefault)
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?? list.FirstOrDefault();
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_suppressPrinterSave = true;
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SelectedPrinter = match;
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_suppressPrinterSave = false;
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if (match is not null)
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{
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SaveLayout(dto => dto.SelectedPrinterName = match.Name);
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}
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_preferredPrinterNameOnLoad = null;
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}
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catch (OperationCanceledException)
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{
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Printers.Clear();
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_suppressPrinterSave = true;
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SelectedPrinter = null;
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_suppressPrinterSave = false;
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PrinterStatus = "加载打印机超时，请检查 PrintDot 后重试";
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}
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catch (TimeoutException)
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{
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Printers.Clear();
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_suppressPrinterSave = true;
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SelectedPrinter = null;
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_suppressPrinterSave = false;
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PrinterStatus = "加载打印机超时，请检查 PrintDot 后重试";
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}
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catch (Exception ex)
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{
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Printers.Clear();
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_suppressPrinterSave = true;
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SelectedPrinter = null;
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_suppressPrinterSave = false;
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PrinterStatus = verbose ? $"打印机连接失败：{ex.Message}" : "打印机连接失败";
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}
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finally
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{
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// 兜底：如果实际有打印机但状态仍是“加载中”，强制纠正状态文本
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if (string.Equals(PrinterStatus, loadingText, StringComparison.Ordinal) && Printers.Count > 0)
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{
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PrinterStatus = $"共 {Printers.Count} 台打印机";
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}
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_isRefreshingPrinters = false;
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}
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}
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/// <summary>
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/// RenderToHtml 在 UI 线程会阻塞鼠标/选中反馈；移至后台线程并做短去抖合并连点。
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/// </summary>
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private async void SchedulePreviewNavigate(bool skipDebounce)
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{
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if (!_webViewReady)
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{
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return;
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}
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var token = Interlocked.Increment(ref _previewVersion);
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try
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{
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if (!skipDebounce)
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{
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await Task.Delay(45).ConfigureAwait(true);
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if (token != _previewVersion)
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{
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return;
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}
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}
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var row = SelectedPlanItem;
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if (row == null)
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{
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PreviewWebView.NavigateToString(
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"<html><body style='font-family:Microsoft YaHei;padding:24px;color:#eee;background:#525659;'>请先选择左侧卡片记录</body></html>");
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return;
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}
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string html;
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try
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{
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var capturedRow = row;
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html = await Task.Run(() => _previewHtmlBuilder(capturedRow)).ConfigureAwait(true);
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}
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catch (Exception ex)
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{
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html =
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"<html><body style='font-family:Microsoft YaHei;padding:24px;color:#eee;background:#525659;'>模板预览失败："
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+ System.Net.WebUtility.HtmlEncode(ex.Message)
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+ "</body></html>";
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}
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if (token != _previewVersion || !ReferenceEquals(SelectedPlanItem, row))
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{
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return;
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}
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PreviewWebView.NavigateToString(html);
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}
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catch
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{
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/* 窗口关闭或调度异常时忽略 */
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}
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}
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private void CancelButton_OnClick(object sender, RoutedEventArgs e)
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{
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DialogResult = false;
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Close();
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}
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private void ConfirmButton_OnClick(object sender, RoutedEventArgs e)
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{
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if (string.IsNullOrWhiteSpace(SelectedPrinterName))
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{
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HandyControl.Controls.MessageBox.Warning("请先在当前弹窗选择打印机，再执行“生成并打印”。");
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return;
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}
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DialogResult = true;
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Close();
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}
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}
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internal sealed class ConfirmWindowLayoutDto
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{
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public double? LeftPaneRatio { get; set; }
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public Dictionary<string, double>? ColumnWidths { get; set; }
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public string? SelectedPrinterName { get; set; }
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}
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public sealed class RawMaterialCardGeneratePlanRow
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{
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public int Index { get; init; }
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public int SourceRowNo { get; init; }
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public required string DetailId { get; init; }
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public required YY.Admin.Core.Entity.MesXslRawMaterialCard Card { get; init; }
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}
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