feat: 完善参数化关系式与SCDM模型修改验证

step_editor/app.py

@@ -287,6 +287,16 @@ class StepEditorWindow(WindowCoreMixin, WindowStateMixin, WindowActionMixin, Inf
         self.property_command_buttons: dict[str, QPushButton] = {}
         self.relation_formula_items: list[dict[str, object]] = []
         self.relation_formula_next_id = 1
+        self.relation_formula_base_snapshot: dict[object, object] | None = None
+        self.relation_formula_replay_queue: list[dict[str, object]] = []
+        self.relation_formula_replay_total = 0
+        self.relation_formula_replay_done = 0
+        self.relation_formula_replay_active = False
+        self.relation_formula_replay_current_id: int | None = None
+        self.relation_formula_replay_callback_seen = False
+        self._relation_formula_replay_running_action = False
+        self._relation_formula_object_label_cache_key: object = None
+        self._relation_formula_object_label_cache: dict[str, object] = {}
 
         self._build_ui()
         self._build_vtk()
@@ -1292,7 +1302,7 @@ class StepEditorWindow(WindowCoreMixin, WindowStateMixin, WindowActionMixin, Inf
         self.relation_formula_box.setObjectName("relationFormulaBox")
         help_tip(
             self.relation_formula_box,
-            "用 FaceID.参数 = 表达式 的形式建立关系式。第一版会先计算公式并回填当前参数表目标值，再执行参数化建模。",
+            "用 FaceID.参数 = 表达式 的形式建立关系式。添加后会立即按当前公式组重新计算并修改模型。",
         )
         relation_layout = QVBoxLayout(self.relation_formula_box)
         relation_layout.setContentsMargins(6, 8, 6, 6)
@@ -1305,13 +1315,20 @@ class StepEditorWindow(WindowCoreMixin, WindowStateMixin, WindowActionMixin, Inf
         self.relation_formula_input.setPlaceholderText("Face87.直径 = Face85.直径")
         help_tip(
             self.relation_formula_input,
-            "示例：Face87.直径 = Face85.直径，或 Face87.位置 = Face85.位置 + (0, 0, -3.5)。输入 Face87. 后会提示当前可用参数。",
+            "示例：Face87.直径 = Face85.直径，或 Face87.位置 = Face85.位置 + (0, 0, -3.5)。输入 Face87. 后会提示可用参数。",
         )
         self.relation_formula_completer_model = QStringListModel(self)
         self.relation_formula_completer = QCompleter(self.relation_formula_completer_model, self)
         self.relation_formula_completer.setCaseSensitivity(Qt.CaseSensitivity.CaseInsensitive)
+        self.relation_formula_completer.setFilterMode(Qt.MatchFlag.MatchStartsWith)
         self.relation_formula_completer.setCompletionMode(QCompleter.CompletionMode.PopupCompletion)
-        self.relation_formula_input.setCompleter(self.relation_formula_completer)
+        self.relation_formula_completer.setMaxVisibleItems(12)
+        self.relation_formula_completer.activated[str].connect(self._on_relation_formula_completion_activated)
+        relation_popup = self.relation_formula_completer.popup()
+        if relation_popup is not None:
+            relation_popup.setFocusPolicy(Qt.FocusPolicy.NoFocus)
+            relation_popup.installEventFilter(self)
+        self.relation_formula_completer.setWidget(self.relation_formula_input)
         self.relation_formula_input.installEventFilter(self)
         self.relation_formula_input.textChanged.connect(self._on_relation_formula_input_changed)
         self.relation_formula_input.returnPressed.connect(self.add_relation_formula)