Fix strategy checklist print closing too early.

Stop auto-closing the print tab on afterprint (short checklist pages were especially fragile), load print HTML via fetch into a blank window, and use CSS checkboxes instead of Unicode ballot boxes.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/hub/hub_strategy_lib.py

@@ -218,16 +218,22 @@ def strategy_meta_payload() -> dict[str, Any]:
     return {"ok": True, "exchanges": tabs}
 
 
-def _checklist_html(checklist: dict[str, Any]) -> str:
+def _checklist_html(checklist: dict[str, Any], *, include_title: bool = True) -> str:
     groups = checklist.get("groups") or []
-    parts = [f"<h2>{escape_html(str(checklist.get('title') or '开仓检查清单'))}</h2>"]
+    parts: list[str] = []
+    if include_title:
+        parts.append(f"<h2>{escape_html(str(checklist.get('title') or '开仓检查清单'))}</h2>")
     for grp in groups:
         if not isinstance(grp, dict):
             continue
         gtitle = escape_html(str(grp.get("title") or ""))
         parts.append(f"<h3>{gtitle}</h3><ul class=\"checklist\">")
         for item in grp.get("items") or []:
-            parts.append(f"<li><span class=\"box\" aria-hidden=\"true\">☐</span> {escape_html(str(item))}</li>")
+            # 用 CSS 方框代替 ☐,避免部分打印机/预览吞掉 Unicode 勾选符
+            parts.append(
+                f"<li><span class=\"box\" aria-hidden=\"true\"></span>"
+                f"<span class=\"item-text\">{escape_html(str(item))}</span></li>"
+            )
         parts.append("</ul>")
     footnotes = checklist.get("footnotes") or []
     if footnotes:
@@ -330,15 +336,28 @@ body {
   padding: 0;
 }
 .checklist li {
-  margin: 7px 0;
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+  margin: 8px 0;
   padding: 0;
 }
 .box {
+  flex: 0 0 auto;
   display: inline-block;
-  width: 1.05em;
+  width: 0.95em;
-  margin-right: 6px;
+  height: 0.95em;
-  font-size: 1.05em;
+  margin-top: 0.2em;
-  line-height: 1.2;
+  border: 1.5px solid #333;
+  border-radius: 2px;
+  background: #fff;
+  box-sizing: border-box;
+  -webkit-print-color-adjust: exact;
+  print-color-adjust: exact;
+}
+.item-text {
+  flex: 1 1 auto;
+  min-width: 0;
 }
 .footnotes {
   margin: 18px 0 0;
@@ -364,16 +383,18 @@ body {
 
 
 def _print_auto_script() -> str:
+    # 不在 afterprint 里 window.close(): Firefox 会在打开打印框时就触发 afterprint,
+    # 短页(检查清单)更容易被立刻关掉,表现为「打不开/打不出来」;策略长文相对不易复现.
     return """<script>
 (function () {
-  function done() {
+  function go() {
-    try { window.close(); } catch (e) {}
+    try { window.focus(); } catch (e) {}
+    window.setTimeout(function () {
+      try { window.print(); } catch (e) {}
+    }, 250);
   }
-  window.addEventListener("afterprint", done, { once: true });
+  if (document.readyState === "complete") go();
-  window.addEventListener("load", function () {
+  else window.addEventListener("load", go, { once: true });
-    window.setTimeout(function () { window.print(); }, 120);
-    window.setTimeout(done, 60000);
-  });
 })();
 </script>"""
 
@@ -398,7 +419,7 @@ def build_print_html(exchange_key: str, part: str = "doc") -> str:
   <h1>{escape_html(cl_title)}</h1>
   <p class="doc-meta">{escape_html(label)} · {escape_html(version)} · 打印 {escape_html(now)}</p>
 </header>
-<div class="doc-body">{_checklist_html(checklist)}</div>
+<div class="doc-body">{_checklist_html(checklist, include_title=False)}</div>
 </article>"""
     elif part == "doc":
         page_title = f"{label} · 策略说明"
@@ -453,8 +474,9 @@ h1{{font-size:1.35rem;margin:0 0 8px}}
 .strategy-doc table{{border-collapse:collapse;width:100%;font-size:.88rem}}
 .strategy-doc th,.strategy-doc td{{border:1px solid #ccc;padding:6px 8px;text-align:left}}
 .checklist ul{{list-style:none;padding:0;margin:0}}
-.checklist li{{margin:8px 0;padding-left:0}}
+.checklist li{{display:flex;align-items:flex-start;gap:8px;margin:8px 0}}
-.box{{display:inline-block;width:1em;margin-right:6px}}
+.box{{flex:0 0 auto;display:inline-block;width:.95em;height:.95em;margin-top:.2em;border:1.5px solid #333;border-radius:2px;background:#fff;box-sizing:border-box}}
+.item-text{{flex:1 1 auto}}
 @media print{{body{{margin:12mm}}}}
 </style>
 </head>

manual_trading_hub/static/index.html

@@ -1374,7 +1374,7 @@
   <script src="/assets/quotes.js?v=20260717-quotes-feed"></script>
   <script src="/assets/funds.js?v=20260717-funds-scroll-fix"></script>
   <script src="/assets/dashboard.js?v=20260717-dash-kpi-merge"></script>
-  <script src="/assets/strategy.js?v=3"></script>
+  <script src="/assets/strategy.js?v=4"></script>
   <script src="/assets/help.js?v=1"></script>
   <script src="/assets/logs.js?v=1"></script>
   <script src="/assets/ai_review_render.js?v=3"></script>

manual_trading_hub/static/strategy.js

@@ -142,12 +142,41 @@
     renderTabs();
   }
 
-  function printSection(mode) {
+  async function printSection(mode) {
     const part = mode === "checklist" ? "checklist" : "doc";
     const url = `/api/strategy/${encodeURIComponent(activeKey)}/print?part=${encodeURIComponent(part)}`;
-    const w = window.open(url, "_blank", "noopener,noreferrer");
+    // 同步打开空白页保留用户手势;再 fetch 写入,避免 noopener 丢句柄 / 短页误关窗
+    const w = window.open("about:blank", "_blank");
     if (!w) {
       if (statusEl) statusEl.textContent = "请允许弹出窗口以打开打印预览";
+      return;
+    }
+    try {
+      w.document.write(
+        "<!DOCTYPE html><title>打印准备中…</title><body style=\"font-family:sans-serif;padding:24px;color:#222\">正在加载打印内容…</body>"
+      );
+      w.document.close();
+    } catch (_) {}
+    try {
+      const r = await fetch(url, { credentials: "same-origin" });
+      const html = await r.text();
+      if (!r.ok) {
+        throw new Error((html && html.slice(0, 120)) || r.statusText || "加载打印页失败");
+      }
+      w.document.open();
+      w.document.write(html);
+      w.document.close();
+      if (statusEl) statusEl.textContent = "";
+    } catch (e) {
+      const msg = String(e && e.message ? e.message : e);
+      try {
+        w.document.open();
+        w.document.write(
+          `<!DOCTYPE html><body style="font-family:sans-serif;padding:24px;color:#222">打印页加载失败: ${esc(msg)}</body>`
+        );
+        w.document.close();
+      } catch (_) {}
+      if (statusEl) statusEl.textContent = msg;
     }
   }
 

tests/test_hub_strategy_lib.py

@@ -33,16 +33,19 @@ class TestHubStrategyLib(unittest.TestCase):
     def test_export_html_contains_checklist(self):
         html = build_export_html("gate")
         self.assertIn("Gate", html)
-        self.assertIn("☐", html)
+        self.assertIn('class="box"', html)
+        self.assertNotIn("☐", html)
 
     def test_print_html_doc_and_checklist(self):
         doc = build_print_html("binance", "doc")
         cl = build_print_html("binance", "checklist")
         self.assertIn("window.print", doc)
         self.assertIn("window.print", cl)
+        self.assertNotIn("window.close", cl)
         self.assertIn("币安", doc)
         self.assertIn("开仓检查清单", cl)
-        self.assertIn("☐", cl)
+        self.assertIn('class="box"', cl)
+        self.assertIn("本账户仅做多", cl)
 
 
 if __name__ == "__main__":