539 lines
23 KiB
C#
539 lines
23 KiB
C#
using System.Globalization;
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using System.IO;
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using System.Text.Json;
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using System.Text.Json.Nodes;
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using System.Text.RegularExpressions;
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using System.Windows;
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using YY.Admin.Core.Entity;
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using YY.Admin.Core.Services;
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using YY.Admin.Helper;
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using YY.Admin.Services.Service.Print;
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namespace YY.Admin.Views.Print;
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public partial class PrintPreviewWindow : HandyControl.Controls.Window
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{
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private readonly string _templateJson;
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private readonly PrintTemplate _template;
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private readonly IPrintDotService? _printDotService;
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private readonly string? _initialPrinterName;
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public PrintPreviewWindow(PrintTemplate template, string? templateJson)
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: this(template, templateJson, null, null)
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{
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}
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public PrintPreviewWindow(PrintTemplate template, string? templateJson,
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IPrintDotService? printDotService, string? selectedPrinterName,
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string? initialParamJson = null)
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{
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InitializeComponent();
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_template = template;
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_templateJson = templateJson ?? string.Empty;
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_printDotService = printDotService;
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_initialPrinterName = selectedPrinterName;
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WebView.CreationProperties = WebView2UserDataFolder.CreateCreationProperties("PrintPreview");
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TbTemplateName.Text = template.TemplateName ?? "（未命名）";
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TbTemplateCode.Text = $"编码：{template.TemplateCode} " +
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$"尺寸：{template.PaperWidthMm ?? 210}×{template.PaperHeightMm ?? 297} mm " +
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$"方向：{template.PaperOrientation ?? "纵向"}";
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TbParamJson.Text = !string.IsNullOrWhiteSpace(initialParamJson)
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? initialParamJson!
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: BuildMockParamJson(_templateJson);
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// 没有 PrintDot 服务时禁用打印相关按钮
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if (_printDotService == null)
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{
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BtnPrint.IsEnabled = false;
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BtnRefreshPrinters.IsEnabled = false;
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PrinterCombo.IsEnabled = false;
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}
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Loaded += async (_, _) =>
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{
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await LoadPreviewAsync();
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await LoadPrintersAsync(verbose: false);
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};
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}
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private async Task LoadPreviewAsync()
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{
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try
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{
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SetStatus("加载中…");
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await WebView.EnsureCoreWebView2Async();
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if (string.IsNullOrWhiteSpace(_templateJson) || _templateJson == "{}")
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{
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WebView.NavigateToString(BuildEmptyHtml());
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SetStatus("尚未设计模板内容");
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return;
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}
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await RenderCurrentParamJsonAsync();
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}
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catch (Exception ex)
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{
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SetStatus($"预览失败：{ex.Message}");
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}
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}
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private static string BuildEmptyHtml() => """
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<!DOCTYPE html>
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<html><head><meta charset="utf-8"/>
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<style>
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body { margin:0; background:#525659; display:flex;
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align-items:center; justify-content:center; height:100vh;
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font-family:"Microsoft YaHei",Arial,sans-serif; }
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.card { background:#fff; border-radius:8px; padding:48px 64px;
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text-align:center; box-shadow:0 6px 24px rgba(0,0,0,.4); }
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.icon { font-size:48px; color:#ccc; margin-bottom:16px; }
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.tip { font-size:15px; color:#888; }
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</style></head>
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<body>
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<div class="card">
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<div class="icon">📄</div>
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<div class="tip">该模板尚未设计内容</div>
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</div>
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</body></html>
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""";
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/// <summary>
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/// 左侧参数 JSON 重新渲染预览（与后端预览一致：用参数 JSON 驱动模板绑定字段）。
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/// </summary>
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private async Task RenderCurrentParamJsonAsync()
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{
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try
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{
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SetStatus("渲染中…");
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JsonObject dataObj;
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var text = TbParamJson.Text?.Trim();
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if (string.IsNullOrWhiteSpace(text))
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{
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dataObj = new JsonObject();
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}
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else
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{
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var node = JsonNode.Parse(text);
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if (node is not JsonObject obj)
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{
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WebView.NavigateToString(BuildErrorHtml("参数JSON必须是对象（JSON Object）"));
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SetStatus("参数JSON格式错误");
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return;
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}
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dataObj = obj;
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}
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var html = NativePrintRenderService.RenderToHtml(_templateJson, dataObj);
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WebView.NavigateToString(html);
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SetStatus(string.Empty);
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}
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catch (Exception ex)
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{
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WebView.NavigateToString(BuildErrorHtml(ex.Message));
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SetStatus($"渲染失败：{ex.Message}");
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}
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await Task.CompletedTask;
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}
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/// <summary>
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/// 根据模板绑定字段生成参数 JSON（便于用户直接编辑并预览）。
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/// 与 web 端 nativeMockData.ts 保持一致：识别 mergeColumnKeys 让同组相邻行字段值相同，
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/// 以便在预览中触发 rowSpan 合并显示。
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/// </summary>
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private static string BuildMockParamJson(string templateJson)
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{
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if (string.IsNullOrWhiteSpace(templateJson) || templateJson == "{}")
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return "{}";
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try
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{
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var root = JsonNode.Parse(templateJson);
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var obj = new JsonObject();
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var elements = root?["elements"]?.AsArray() ?? new JsonArray();
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var fields = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
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var rng = new Random();
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foreach (var el in elements.OfType<JsonObject>())
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{
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var type = (el["type"]?.ToString() ?? string.Empty).Trim();
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if (type is "table" or "detailTable")
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{
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var source = (el["source"]?.ToString() ?? "mainTable").Trim();
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if (!obj.ContainsKey(source))
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{
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var columns = el["columns"]?.AsArray() ?? new JsonArray();
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var colList = columns.OfType<JsonObject>().ToList();
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// 解析合并字段顺序：根据 mergeColumnKeys 按 column.key 映射到 bindField
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var mergeKeys = (el["mergeColumnKeys"]?.AsArray() ?? new JsonArray())
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.Select(n => n?.ToString() ?? string.Empty)
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.Where(s => !string.IsNullOrEmpty(s))
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.ToList();
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var strictGrouping = !string.Equals(
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el["strictGrouping"]?.ToString() ?? "true", "false",
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StringComparison.OrdinalIgnoreCase);
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var mergeFieldOrder = mergeKeys
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.Select(k => colList.FirstOrDefault(c => string.Equals(c["key"]?.ToString() ?? string.Empty, k, StringComparison.Ordinal)))
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.Where(c => c != null)
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.Select(c => (c!["bindField"]?.ToString() ?? c!["field"]?.ToString() ?? string.Empty).Trim())
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.Where(s => !string.IsNullOrEmpty(s))
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.ToList();
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var rows = new JsonArray();
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JsonObject? prevRow = null;
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for (var i = 0; i < 8; i++)
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{
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var row = new JsonObject();
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foreach (var col in colList)
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{
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var field = (col["bindField"]?.ToString() ?? col["field"]?.ToString() ?? string.Empty).Trim();
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if (string.IsNullOrWhiteSpace(field)) continue;
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var contentType = (col["contentType"]?.ToString() ?? "text").Trim().ToLowerInvariant();
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fields.Add(field);
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var mergeIndex = mergeFieldOrder.IndexOf(field);
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var enableMerge = mergeIndex >= 0;
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if (enableMerge)
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{
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// 父级合并字段在 strictGrouping 下必须与前一行一致，才允许沿用前一行值
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var canFollowPrev = !strictGrouping || mergeIndex == 0 || (prevRow != null &&
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mergeFieldOrder.Take(mergeIndex).All(parent =>
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(prevRow[parent]?.ToString() ?? string.Empty) == (row[parent]?.ToString() ?? string.Empty)));
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if (i > 0 && prevRow != null && canFollowPrev && rng.NextDouble() < 0.5)
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{
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// 沿用前一行此字段值，从而触发合并
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var prevVal = prevRow[field];
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row[field] = prevVal != null ? JsonNode.Parse(prevVal.ToJsonString()) : (JsonNode?)$"{field}_合并组1";
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}
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else
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{
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// 新合并组：随机 0-3 表示组编号
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row[field] = $"{field}_合并组{rng.Next(1, 5)}";
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}
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continue;
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}
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row[field] = contentType switch
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{
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"number" => (i + 1) * 123.45,
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"amount" => (i + 1) * 24567.89,
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"qrcode" => BuildQrcodeMockValue(field, rng),
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"barcode" => BuildBarcodeMockValue(field, rng),
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"image" => $"https://picsum.photos/seed/{Uri.EscapeDataString(field + "_" + (i + 1))}/260/120",
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_ => $"{field}_示例值_{i + 1}"
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};
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}
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rows.Add(row);
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prevRow = row;
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}
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obj[source] = rows;
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}
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}
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var bind = (el["bindField"]?.ToString() ?? string.Empty).Trim();
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if (!string.IsNullOrWhiteSpace(bind))
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fields.Add(bind);
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// 针对单一元素按 type 提前预填合法 mock 值，避免下面兜底成"字段_示例值"
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// （barcode 含中文会导致 Code128 编码失败）。与 web 端 nativeMockData.ts 行为对齐。
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if (!string.IsNullOrWhiteSpace(bind) && !obj.ContainsKey(bind))
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{
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switch (type)
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{
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case "barcode":
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obj[bind] = BuildBarcodeMockValue(bind, rng);
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break;
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case "qrcode":
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obj[bind] = BuildQrcodeMockValue(bind, rng);
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break;
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case "image":
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obj[bind] = $"https://picsum.photos/seed/{Uri.EscapeDataString(bind)}/260/120";
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break;
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case "date":
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obj[bind] = "2026-01-01";
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break;
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}
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}
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// freeTable / 其它含 cells 的元素：根据 cell.contentType 预填合法 mock 值
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CollectCellsMock(el["cells"], obj, fields, rng);
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// 提取 text 中的 {{field}} 占位符（支持内嵌）
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var text = el["text"]?.ToString() ?? string.Empty;
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foreach (Match m in Regex.Matches(text, @"\{\{\s*([\w\.]+)\s*\}\}"))
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{
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var key = m.Groups[1].Value.Trim();
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if (!string.IsNullOrWhiteSpace(key))
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fields.Add(key);
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}
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}
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foreach (var f in fields.OrderBy(x => x, StringComparer.OrdinalIgnoreCase))
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{
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if (f.Equals("pageNo", StringComparison.OrdinalIgnoreCase) || f.Equals("totalPages", StringComparison.OrdinalIgnoreCase))
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continue;
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if (!obj.ContainsKey(f))
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obj[f] = $"{f}_示例值";
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}
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return obj.ToJsonString(new JsonSerializerOptions { WriteIndented = true });
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}
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catch
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{
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return "{}";
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}
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}
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/// <summary>
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/// 生成一个 ASCII 安全、Code128 可编码的条码 mock 值：BAR + 12 位数字 + 字段名前 6 位转大写字母。
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/// 与 web 端 nativeMockData.ts::buildBarcodeValue 同款规则。
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/// </summary>
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private static string BuildBarcodeMockValue(string field, Random rng)
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{
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var digits = rng.NextInt64(100000000000L, 999999999999L).ToString(CultureInfo.InvariantCulture);
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var suffix = new string((field ?? string.Empty)
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.Where(c => (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9'))
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.Take(6).ToArray()).ToUpperInvariant();
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if (string.IsNullOrEmpty(suffix)) suffix = "BARCOD";
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return $"BAR{digits}{suffix}";
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}
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/// <summary>生成 QR mock 值：纯 ASCII，便于 QRCoder 编码与人眼区分字段。</summary>
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private static string BuildQrcodeMockValue(string field, Random rng)
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{
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var safe = new string((field ?? string.Empty)
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.Where(c => (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '_')
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.ToArray());
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if (string.IsNullOrEmpty(safe)) safe = "QR";
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return $"QR_{safe}_{rng.Next(100000, 999999)}";
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}
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/// <summary>
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/// 递归扫描 cells 节点（freeTable、嵌套结构），按每个 cell 的 contentType 提前预填合法 mock 值。
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/// 不识别的 cell 继续走原来的 fields 兜底流程。
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/// </summary>
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private static void CollectCellsMock(JsonNode? node, JsonObject obj, ISet<string> fields, Random rng)
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{
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if (node == null) return;
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if (node is JsonObject o)
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{
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var bind = (o["bindField"]?.ToString() ?? string.Empty).Trim();
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if (!string.IsNullOrWhiteSpace(bind))
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{
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fields.Add(bind);
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if (!obj.ContainsKey(bind))
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{
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var ct = (o["contentType"]?.ToString() ?? "text").Trim().ToLowerInvariant();
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switch (ct)
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{
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case "barcode":
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obj[bind] = BuildBarcodeMockValue(bind, rng);
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break;
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case "qrcode":
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obj[bind] = BuildQrcodeMockValue(bind, rng);
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break;
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case "image":
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obj[bind] = $"https://picsum.photos/seed/{Uri.EscapeDataString(bind)}/260/120";
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break;
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}
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}
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}
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foreach (var kv in o)
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CollectCellsMock(kv.Value, obj, fields, rng);
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return;
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}
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if (node is JsonArray arr)
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{
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foreach (var it in arr)
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CollectCellsMock(it, obj, fields, rng);
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}
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}
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private static void CollectBindFields(JsonNode? node, ISet<string> fields)
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{
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if (node == null) return;
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if (node is JsonObject o)
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{
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if (o.TryGetPropertyValue("bindField", out var bindNode))
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{
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var bind = bindNode?.ToString()?.Trim();
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if (!string.IsNullOrWhiteSpace(bind))
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fields.Add(bind);
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}
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foreach (var kv in o)
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CollectBindFields(kv.Value, fields);
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return;
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}
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if (node is JsonArray arr)
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{
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foreach (var it in arr)
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CollectBindFields(it, fields);
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}
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}
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private static string BuildErrorHtml(string message)
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{
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var esc = message.Replace("&", "&").Replace("<", "<").Replace(">", ">");
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return "<html><head><meta charset=\"utf-8\"/><style>"
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+ "body{margin:0;background:#525659;display:flex;align-items:center;"
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+ "justify-content:center;height:100vh;font-family:'Microsoft YaHei',Arial,sans-serif;}"
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+ ".card{background:#fff;border-radius:8px;padding:32px 48px;text-align:center;"
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+ "box-shadow:0 6px 24px rgba(0,0,0,.4);max-width:560px;}"
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+ "</style></head><body><div class=\"card\">"
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+ "<div style=\"font-size:40px;margin-bottom:12px\">⚠️</div>"
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+ "<div style=\"font-size:13px;color:#e74c3c;word-break:break-all;\">渲染失败：" + esc + "</div>"
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+ "</div></body></html>";
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}
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private async void RenderByParamJson_Click(object sender, RoutedEventArgs e)
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{
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await RenderCurrentParamJsonAsync();
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}
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private async void GenerateMockJson_Click(object sender, RoutedEventArgs e)
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{
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TbParamJson.Text = BuildMockParamJson(_templateJson);
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await RenderCurrentParamJsonAsync();
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}
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private void CloseButton_Click(object sender, RoutedEventArgs e) => Close();
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/// <summary>
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/// 设置顶部状态栏文字：单行显示首行概要，完整多行内容通过 ToolTip 兜底，避免把工具栏撑高。
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/// </summary>
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private void SetStatus(string? message)
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{
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var full = (message ?? string.Empty).Trim();
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var firstLine = full.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries).FirstOrDefault() ?? string.Empty;
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TbStatus.Text = firstLine;
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TbStatus.ToolTip = full.Contains('\n') || full.Length > firstLine.Length ? full : null;
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}
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// ── 打印机列表加载（PrintDot 桥接器） ────────────────────────────────
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/// <summary>
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/// 通过 PrintDot 桥接器拉取打印机列表，填充顶部下拉框，并按上次选择/系统默认/首台优先选中。
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/// </summary>
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private async Task LoadPrintersAsync(bool verbose)
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{
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if (_printDotService == null) return;
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try
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{
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if (verbose) SetStatus("刷新打印机中...");
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var list = await _printDotService.GetPrintersAsync();
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PrinterCombo.ItemsSource = list;
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var preferName = _initialPrinterName
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?? PrintDotSettings.Load().SelectedPrinter;
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var match = list.FirstOrDefault(p => p.Name == preferName)
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?? list.FirstOrDefault(p => p.IsDefault)
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?? list.FirstOrDefault();
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PrinterCombo.SelectedItem = match;
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SetStatus(list.Count > 0
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? $"已发现 {list.Count} 台打印机"
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: "未检测到打印机");
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}
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catch (Exception ex)
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{
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PrinterCombo.ItemsSource = null;
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SetStatus($"PrintDot 未连接：{ex.Message}");
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}
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}
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private async void RefreshPrinters_Click(object sender, RoutedEventArgs e)
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{
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await LoadPrintersAsync(verbose: true);
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}
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/// <summary>
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/// 打印流程：
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/// 1) 用 WebView2.PrintToPdfAsync 按模板纸张尺寸生成 PDF（与 @page 一致，零边距）；
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/// 2) 读取 PDF → Base64；
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/// 3) 通过 PrintDot 桥接器发送至本地物理打印机。
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/// 与后端 web 端 printNativeSchemaViaPrintDot 的行为基本一致，只是 HTML→PDF 改用 WebView2 内置能力，
|
||
/// 比 html2canvas + jsPDF 更接近浏览器原生打印效果。
|
||
/// </summary>
|
||
private async void Print_Click(object sender, RoutedEventArgs e)
|
||
{
|
||
if (_printDotService == null)
|
||
{
|
||
HandyControl.Controls.Growl.Warning("PrintDot 服务不可用");
|
||
return;
|
||
}
|
||
|
||
if (string.IsNullOrWhiteSpace(_templateJson) || _templateJson == "{}")
|
||
{
|
||
HandyControl.Controls.Growl.Warning("当前模板没有可打印内容");
|
||
return;
|
||
}
|
||
|
||
var selected = PrinterCombo.SelectedItem as PrintDotPrinter;
|
||
if (selected == null || string.IsNullOrWhiteSpace(selected.Name))
|
||
{
|
||
HandyControl.Controls.Growl.Warning("请先选择打印机");
|
||
return;
|
||
}
|
||
|
||
BtnPrint.IsEnabled = false;
|
||
var pdfPath = Path.Combine(Path.GetTempPath(), $"qhmes_print_{Guid.NewGuid():N}.pdf");
|
||
try
|
||
{
|
||
// 1) 生成 PDF
|
||
SetStatus("正在生成 PDF...");
|
||
await WebView.EnsureCoreWebView2Async();
|
||
|
||
var pageW = (_template.PaperWidthMm ?? 210);
|
||
var pageH = (_template.PaperHeightMm ?? 297);
|
||
var settings = WebView.CoreWebView2.Environment.CreatePrintSettings();
|
||
settings.PageWidth = pageW / 25.4d; // 毫米转英寸
|
||
settings.PageHeight = pageH / 25.4d;
|
||
settings.MarginTop = 0;
|
||
settings.MarginBottom = 0;
|
||
settings.MarginLeft = 0;
|
||
settings.MarginRight = 0;
|
||
settings.ShouldPrintBackgrounds = true;
|
||
settings.ShouldPrintHeaderAndFooter = false;
|
||
settings.Orientation = string.Equals(_template.PaperOrientation, "横向", StringComparison.Ordinal)
|
||
? Microsoft.Web.WebView2.Core.CoreWebView2PrintOrientation.Landscape
|
||
: Microsoft.Web.WebView2.Core.CoreWebView2PrintOrientation.Portrait;
|
||
|
||
var ok = await WebView.CoreWebView2.PrintToPdfAsync(pdfPath, settings);
|
||
if (!ok || !File.Exists(pdfPath))
|
||
throw new InvalidOperationException("生成 PDF 失败，请确认预览已加载完成");
|
||
|
||
// 2) 读取为 Base64
|
||
var pdfBytes = await File.ReadAllBytesAsync(pdfPath);
|
||
var pdfBase64 = Convert.ToBase64String(pdfBytes);
|
||
|
||
// 3) 通过 PrintDot 桥接器发送
|
||
SetStatus($"正在通过 PrintDot 发送到「{selected.Name}」...");
|
||
var jobName = string.IsNullOrWhiteSpace(_template.TemplateName) ? "QH-MES" : _template.TemplateName!;
|
||
await _printDotService.PrintAsync(selected.Name, pdfBase64, jobName, copies: 1);
|
||
|
||
SetStatus("打印任务已发送");
|
||
HandyControl.Controls.Growl.Success("打印任务已发送至 PrintDot");
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
// 顶部状态栏单行显示首行，完整多行处理步骤在 Growl 弹窗中展示
|
||
SetStatus($"打印失败：{ex.Message}");
|
||
HandyControl.Controls.Growl.Error($"打印失败：{ex.Message}");
|
||
}
|
||
finally
|
||
{
|
||
try { if (File.Exists(pdfPath)) File.Delete(pdfPath); } catch { /* 忽略清理失败 */ }
|
||
BtnPrint.IsEnabled = true;
|
||
}
|
||
}
|
||
}
|