修复最后页面的单元格右键问题

Front/main.py

 import time
 
 from PySide6.QtTest import QTest
-from PySide6.QtWidgets import QFileDialog, QWidget, QVBoxLayout, QTreeWidget, QApplication, QTreeWidgetItem, QMessageBox
+from PySide6.QtWidgets import QFileDialog, QWidget, QVBoxLayout, QTreeWidget, QApplication, QTreeWidgetItem, \
+    QMessageBox, QItemDelegate, QLineEdit
 from PySide6.QtCore import Signal, Qt, Slot, QObject
 from PySide6.QtSql import QSqlTableModel, QSqlDatabase
 from watchdog.observers import Observer
 project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
 sys.path.append(project_root)
 
-
-
 os.environ["QT_FONT_DPI"] = "96"  # FIX Problem for High DPI and Scale above 100%
 
 # SET AS GLOBAL WIDGETS
             main_window.refresh_tree()
 
 
+class CustomLineEdit(QLineEdit):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+    def contextMenuEvent(self, event):
+        # 不执行任何操作，屏蔽右键菜单
+        pass
+
+
+class CustomItemDelegate(QItemDelegate):
+    def createEditor(self, parent, option, index):
+        editor = CustomLineEdit(parent)
+        return editor
+
+
 # class DatabaseChangeHandler(FileSystemEventHandler):
 #     def __init__(self, main_window):
 #         self.main_window = main_window
         # 设置 datainfo 页面的焦点策略，使其能够捕获键盘事件
         widgets.datainfo.setFocusPolicy(Qt.StrongFocus)
         widgets.datainfo.keyPressEvent = self.datainfo_keyPressEvent
+        # 初始化 item_index 和 oritext
+        self.item_index = None
+        self.oritext = None
+        # 设置自定义的 QItemDelegate 给 QTableView
+        self.custom_delegate = CustomItemDelegate(self)
+        self.ui.resultTableView1.setItemDelegate(self.custom_delegate)
         # 是否使用系统自带标题栏  True是不使用，False使用
         # ///////////////////////////////////////////////////////////////
         Settings.ENABLE_CUSTOM_TITLE_BAR = True
         self.ui.resultTableView1.viewport().installEventFilter(self)
 
     def eventFilter(self, source, event):
-        global item_index
-        global oritext
         if event.type() == QEvent.MouseButtonDblClick:
             # 获取双击的单元格
-            item_index = self.ui.resultTableView1.indexAt(event.position().toPoint())
-            if item_index.isValid():
+            self.item_index = self.ui.resultTableView1.indexAt(event.position().toPoint())
+            if self.item_index.isValid():
                 # 保留原先的内容
-                ori = self.ui.resultTableView1.model().itemData(item_index)
-                oritext = ori[0]
+                ori = self.ui.resultTableView1.model().itemData(self.item_index)
+                self.oritext = ori[0] if 0 in ori else ''
                 # 清空单元格内容
-                # self.ui.resultTableView1.setItem(index.row(), index.column(), QTableWidgetItem(""))
-                self.ui.resultTableView1.model().setData(item_index, '')
-                # # 进入编辑模式
-                # self.ui.resultTableView1.edit(index)
+                self.ui.resultTableView1.model().setData(self.item_index, '')
+
         if event.type() == QEvent.MouseButtonPress:
-            #检查是否为空
-            if len(self.ui.resultTableView1.model().itemData(item_index)[0]) == 0:
-                #自动填充原来的内容
-                self.ui.resultTableView1.model().setData(item_index, oritext)
+            # 检查是否为空
+            if self.item_index is not None and len(self.ui.resultTableView1.model().itemData(self.item_index)[0]) == 0:
+                # 自动填充原来的内容
+                self.ui.resultTableView1.model().setData(self.item_index, self.oritext)
+
         return super().eventFilter(source, event)
 
     def add_Dataclicked(self):