refactor(pipeline): 路径直接传输 — 统一 ctx 字段名/panel key/step 形参名

src/gui/components/data_models.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+数据模型模块
+
+包含 PandasTableModel 等数据模型类。
+"""
+
+import pandas as pd
+from PyQt5.QtCore import Qt, QAbstractTableModel
+
+
+class PandasTableModel(QAbstractTableModel):
+    """支持DataFrame的表格模型"""
+    def __init__(self, data_frame: pd.DataFrame):
+        super().__init__()
+        self._data = data_frame.copy()
+        if self._data.empty:
+            self._data = pd.DataFrame()
+        self._data.fillna("", inplace=True)
+        self._columns = [str(col) for col in self._data.columns]
+
+    def rowCount(self, parent=None):
+        return len(self._data)
+
+    def columnCount(self, parent=None):
+        return len(self._columns)
+
+    def data(self, index, role=Qt.DisplayRole):
+        if not index.isValid() or role != Qt.DisplayRole:
+            return None
+
+        value = self._data.iat[index.row(), index.column()]
+        if pd.isna(value):
+            return ""
+        return str(value)
+
+    def headerData(self, section, orientation, role=Qt.DisplayRole):
+        if role != Qt.DisplayRole:
+            return None
+        if orientation == Qt.Horizontal:
+            if section < len(self._columns):
+                return self._columns[section]
+            return str(section)
+        return str(section + 1)
+
+    def flags(self, index):
+        if not index.isValid():
+            return Qt.NoItemFlags
+        return Qt.ItemIsEnabled | Qt.ItemIsSelectable