新增打印模板管理功能，包含免密接口和实时通知机制，支持桌面端打印模板的查询和列表展示。更新相关控制器、服务和视图，优化用户体验并增强系统的实时数据同步能力。

2026-05-12 18:29:03 +08:00
parent f5ba828eff
commit fcedc66f7a
32 changed files with 2788 additions and 2 deletions
--- a/yy-admin-master/YY.Admin/Views/Print/PrintPreviewWindow.xaml.cs
+++ b/yy-admin-master/YY.Admin/Views/Print/PrintPreviewWindow.xaml.cs
@@ -0,0 +1,240 @@
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using System.Text.RegularExpressions;
+using System.Windows;
+using YY.Admin.Core.Entity;
+using YY.Admin.Services.Service.Print;
+
+namespace YY.Admin.Views.Print;
+
+public partial class PrintPreviewWindow : HandyControl.Controls.Window
+{
+    private readonly string _templateJson;
+
+    public PrintPreviewWindow(PrintTemplate template, string? templateJson)
+    {
+        InitializeComponent();
+        _templateJson = templateJson ?? string.Empty;
+
+        TbTemplateName.Text = template.TemplateName ?? "（未命名）";
+        TbTemplateCode.Text = $"编码：{template.TemplateCode}  " +
+                              $"尺寸：{template.PaperWidthMm ?? 210}×{template.PaperHeightMm ?? 297} mm  " +
+                              $"方向：{template.PaperOrientation ?? "纵向"}";
+
+        TbParamJson.Text = BuildMockParamJson(_templateJson);
+
+        Loaded += async (_, _) => await LoadPreviewAsync();
+    }
+
+    private async Task LoadPreviewAsync()
+    {
+        try
+        {
+            TbStatus.Text = "加载中…";
+            await WebView.EnsureCoreWebView2Async();
+
+            if (string.IsNullOrWhiteSpace(_templateJson) || _templateJson == "{}")
+            {
+                WebView.NavigateToString(BuildEmptyHtml());
+                TbStatus.Text = "尚未设计模板内容";
+                return;
+            }
+
+            await RenderCurrentParamJsonAsync();
+        }
+        catch (Exception ex)
+        {
+            TbStatus.Text = $"预览失败：{ex.Message}";
+        }
+    }
+
+    private static string BuildEmptyHtml() => """
+        <!DOCTYPE html>
+        <html><head><meta charset="utf-8"/>
+        <style>
+          body { margin:0; background:#525659; display:flex;
+                 align-items:center; justify-content:center; height:100vh;
+                 font-family:"Microsoft YaHei",Arial,sans-serif; }
+          .card { background:#fff; border-radius:8px; padding:48px 64px;
+                  text-align:center; box-shadow:0 6px 24px rgba(0,0,0,.4); }
+          .icon { font-size:48px; color:#ccc; margin-bottom:16px; }
+          .tip  { font-size:15px; color:#888; }
+        </style></head>
+        <body>
+          <div class="card">
+            <div class="icon">📄</div>
+            <div class="tip">该模板尚未设计内容</div>
+          </div>
+        </body></html>
+        """;
+
+    /// <summary>
+    /// 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）。
+    /// </summary>
+    private async Task RenderCurrentParamJsonAsync()
+    {
+        try
+        {
+            TbStatus.Text = "渲染中…";
+
+            JsonObject dataObj;
+            var text = TbParamJson.Text?.Trim();
+            if (string.IsNullOrWhiteSpace(text))
+            {
+                dataObj = new JsonObject();
+            }
+            else
+            {
+                var node = JsonNode.Parse(text);
+                if (node is not JsonObject obj)
+                {
+                    WebView.NavigateToString(BuildErrorHtml("参数JSON必须是对象（JSON Object）"));
+                    TbStatus.Text = "参数JSON格式错误";
+                    return;
+                }
+                dataObj = obj;
+            }
+
+            var html = NativePrintRenderService.RenderToHtml(_templateJson, dataObj);
+            WebView.NavigateToString(html);
+            TbStatus.Text = string.Empty;
+        }
+        catch (Exception ex)
+        {
+            WebView.NavigateToString(BuildErrorHtml(ex.Message));
+            TbStatus.Text = $"渲染失败：{ex.Message}";
+        }
+        await Task.CompletedTask;
+    }
+
+    /// <summary>
+    /// 根据模板绑定字段生成参数 JSON（便于用户直接编辑并预览）。
+    /// </summary>
+    private static string BuildMockParamJson(string templateJson)
+    {
+        if (string.IsNullOrWhiteSpace(templateJson) || templateJson == "{}")
+            return "{}";
+
+        try
+        {
+            var root = JsonNode.Parse(templateJson);
+            var obj = new JsonObject();
+            var elements = root?["elements"]?.AsArray() ?? new JsonArray();
+            var fields = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+
+            foreach (var el in elements.OfType<JsonObject>())
+            {
+                var type = (el["type"]?.ToString() ?? string.Empty).Trim();
+                if (type is "table" or "detailTable")
+                {
+                    var source = (el["source"]?.ToString() ?? "mainTable").Trim();
+                    if (!obj.ContainsKey(source))
+                    {
+                        var rows = new JsonArray();
+                        var columns = el["columns"]?.AsArray() ?? new JsonArray();
+                        for (var i = 1; i <= 8; i++)
+                        {
+                            var row = new JsonObject();
+                            foreach (var col in columns.OfType<JsonObject>())
+                            {
+                                var field = (col["bindField"]?.ToString() ?? col["field"]?.ToString() ?? string.Empty).Trim();
+                                if (string.IsNullOrWhiteSpace(field)) continue;
+                                var contentType = (col["contentType"]?.ToString() ?? "text").Trim().ToLowerInvariant();
+                                row[field] = contentType switch
+                                {
+                                    "number" => i * 123.45,
+                                    "amount" => i * 24567.89,
+                                    "qrcode" => $"QR_{field}_{i}",
+                                    "barcode" => $"BAR_{field}_{i}",
+                                    "image" => $"https://picsum.photos/seed/{Uri.EscapeDataString(field + "_" + i)}/260/120",
+                                    _ => $"{field}_示例值_{i}"
+                                };
+                                fields.Add(field);
+                            }
+                            rows.Add(row);
+                        }
+                        obj[source] = rows;
+                    }
+                }
+
+                var bind = (el["bindField"]?.ToString() ?? string.Empty).Trim();
+                if (!string.IsNullOrWhiteSpace(bind))
+                    fields.Add(bind);
+
+                // 提取 text 中的 {{field}} 占位符（支持内嵌）
+                var text = el["text"]?.ToString() ?? string.Empty;
+                foreach (Match m in Regex.Matches(text, @"\{\{\s*([\w\.]+)\s*\}\}"))
+                {
+                    var key = m.Groups[1].Value.Trim();
+                    if (!string.IsNullOrWhiteSpace(key))
+                        fields.Add(key);
+                }
+
+                CollectBindFields(el["cells"], fields);
+            }
+
+            foreach (var f in fields.OrderBy(x => x, StringComparer.OrdinalIgnoreCase))
+            {
+                if (f.Equals("pageNo", StringComparison.OrdinalIgnoreCase) || f.Equals("totalPages", StringComparison.OrdinalIgnoreCase))
+                    continue;
+                if (!obj.ContainsKey(f))
+                    obj[f] = $"{f}_示例值";
+            }
+
+            return obj.ToJsonString(new JsonSerializerOptions { WriteIndented = true });
+        }
+        catch
+        {
+            return "{}";
+        }
+    }
+
+    private static void CollectBindFields(JsonNode? node, ISet<string> fields)
+    {
+        if (node == null) return;
+        if (node is JsonObject o)
+        {
+            if (o.TryGetPropertyValue("bindField", out var bindNode))
+            {
+                var bind = bindNode?.ToString()?.Trim();
+                if (!string.IsNullOrWhiteSpace(bind))
+                    fields.Add(bind);
+            }
+            foreach (var kv in o)
+                CollectBindFields(kv.Value, fields);
+            return;
+        }
+        if (node is JsonArray arr)
+        {
+            foreach (var it in arr)
+                CollectBindFields(it, fields);
+        }
+    }
+
+    private static string BuildErrorHtml(string message)
+    {
+        var esc = message.Replace("&", "&amp;").Replace("<", "&lt;").Replace(">", "&gt;");
+        return "<html><head><meta charset=\"utf-8\"/><style>"
+             + "body{margin:0;background:#525659;display:flex;align-items:center;"
+             + "justify-content:center;height:100vh;font-family:'Microsoft YaHei',Arial,sans-serif;}"
+             + ".card{background:#fff;border-radius:8px;padding:32px 48px;text-align:center;"
+             + "box-shadow:0 6px 24px rgba(0,0,0,.4);max-width:560px;}"
+             + "</style></head><body><div class=\"card\">"
+             + "<div style=\"font-size:40px;margin-bottom:12px\">⚠️</div>"
+             + "<div style=\"font-size:13px;color:#e74c3c;word-break:break-all;\">渲染失败：" + esc + "</div>"
+             + "</div></body></html>";
+    }
+
+    private async void RenderByParamJson_Click(object sender, RoutedEventArgs e)
+    {
+        await RenderCurrentParamJsonAsync();
+    }
+
+    private async void GenerateMockJson_Click(object sender, RoutedEventArgs e)
+    {
+        TbParamJson.Text = BuildMockParamJson(_templateJson);
+        await RenderCurrentParamJsonAsync();
+    }
+
+    private void CloseButton_Click(object sender, RoutedEventArgs e) => Close();
+}