修复UCD调用异常、保存结果按钮异常

pqAutomationApp.py

@@ -67,6 +67,16 @@ from app.runner.test_runner import TestRunnerMixin
 plt.rcParams["font.family"] = ["sans-serif"]
 plt.rcParams["font.sans-serif"] = ["Microsoft YaHei"]
 
+
+class _LegacyUcdConnected:
+    """Shim for legacy ``self.ucd.status`` checks after the UCD service refactor."""
+
+    status = True
+
+
+_LEGACY_UCD_CONNECTED = _LegacyUcdConnected()
+
+
 class PQAutomationApp(
     ConfigIOMixin,
     ChartFrameMixin,
@@ -207,6 +217,7 @@ class PQAutomationApp(
         # 创建测试类型选择区域
         self.create_test_type_frame()
         self._setup_connection_event_handlers()
+        self.refresh_connection_indicators()
         # 创建操作按钮区域
         self.create_operation_frame()
         # 创建结果图表区域
@@ -235,6 +246,18 @@ class PQAutomationApp(
             anchor=tk.E,
         ).pack(side=tk.RIGHT)
 
+    @property
+    def is_ucd_connected(self) -> bool:
+        """UCD323 是否已连接（统一入口，替代旧的 ``self.ucd.status``）。"""
+        return self.signal_service.is_connected
+
+    @property
+    def ucd(self):
+        """Legacy UCD handle: ``None`` when disconnected, truthy object with ``.status`` when connected."""
+        if not self.is_ucd_connected:
+            return None
+        return _LEGACY_UCD_CONNECTED
+
     def _setup_connection_event_handlers(self) -> None:
         """订阅连接事件，驱动 UCD / CA 指示灯（替代轮询 controller.status）。"""
 
@@ -463,19 +486,38 @@ class PQAutomationApp(
             self._chart_snapshots[test_type] = {}
         self._chart_snapshots[test_type][chart_name] = args
 
+    def _has_saveable_results(self, test_type: str) -> bool:
+        """判断指定测试类型是否有可保存的历史结果。"""
+        snapshots = self._chart_snapshots.get(test_type) or {}
+        return bool(snapshots) or (
+            hasattr(self, "results") and self.results.has(test_type)
+        )
+
+    def _sync_save_button_state(self):
+        """根据当前测试类型是否有可保存结果，同步保存按钮状态。"""
+        if not hasattr(self, "save_btn"):
+            return
+        if getattr(self, "testing", False):
+            self.save_btn.config(state=tk.DISABLED)
+            return
+        test_type = self.test_type_var.get() if hasattr(self, "test_type_var") else None
+        if not test_type:
+            return
+        state = tk.NORMAL if self._has_saveable_results(test_type) else tk.DISABLED
+        self.save_btn.config(state=state)
+
     def _restore_charts_for_type(self, test_type: str):
         """
         切换测试类型后恢复图表显示：
-        - 该类型有历史结果 → 切换活跃结果 + 重绘所有已缓存图表
+        - 该类型有历史结果 → 切换活跃结果 + 重绘所有已缓存图表 + 启用保存按钮
         - 该类型无历史结果 → 清空图表 + 禁用保存按钮
         """
         self.results.set_active(test_type)
-        snapshots = self._chart_snapshots.get(test_type)
-        if not snapshots:
+        if not self._has_saveable_results(test_type):
             self.clear_chart()
-            if hasattr(self, "save_btn"):
-                self.save_btn.config(state=tk.DISABLED)
+            self._sync_save_button_state()
             return
+        snapshots = self._chart_snapshots.get(test_type) or {}
         for chart_name, args in snapshots.items():
             plot_fn = getattr(self, f"plot_{chart_name}", None)
             if plot_fn:
@@ -483,6 +525,7 @@ class PQAutomationApp(
                     plot_fn(*args)
                 except Exception:
                     pass
+        self._sync_save_button_state()
 
     def _check_start_preconditions(self):
         """检查开始测试前置条件：设备连接 & 未在测试中。"""