如何检测QTableView行单元格中的按钮单击

from PyQt5.QtWidgets import QApplication, QTableView, QPushButton, QWidget, QVBoxLayout, QMessageBox, QMainWindow
from PyQt5.QtCore import Qt, QModelIndex, pyqtSignal, QAbstractTableModel, QVariant, QSize
from PyQt5.QtGui import QStandardItemModel, QStandardItem, QIcon
from PyQt5.QtWidgets import QStyledItemDelegate

class ButtonDelegate(QStyledItemDelegate):
    buttonClicked = pyqtSignal(int, int)

    def __init__(self, parent=None):
        super(ButtonDelegate, self).__init__(parent)

    def createEditor(self, parent, option, index):
        button = QPushButton(parent)
        button.clicked.connect(lambda: self.buttonClicked.emit(index.row(), index.column()))
        return button

    def setEditorData(self, editor, index):
        pass

    def setModelData(self, editor, model, index):
        pass

    def updateEditorGeometry(self, editor, option, index):
        editor.setGeometry(option.rect)

class MyTableModel(QAbstractTableModel):
    def __init__(self, data, headers):
        super(MyTableModel, self).__init__()
        self._data = data
        self._headers = headers

    def rowCount(self, parent=QModelIndex()):
        return len(self._data)

    def columnCount(self, parent=QModelIndex()):
        return len(self._headers)

    def data(self, index, role=Qt.DisplayRole):
        if not index.isValid():
            return QVariant()
        elif role == Qt.DisplayRole:
            return self._data[index.row()][index.column()]
        return QVariant()

    def headerData(self, section, orientation, role=Qt.DisplayRole):
        if role == Qt.DisplayRole and orientation == Qt.Horizontal:
            return self._headers[section]
        return QVariant()

class MainWindow(QMainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()

        self.table_view = QTableView()
        self.setCentralWidget(self.table_view)

        data = [
            ['John', 'Doe', 'Edit'],
            ['Jane', 'Smith', 'Edit'],
            ['Bob', 'Johnson', 'Edit']
        ]
        headers = ['First Name', 'Last Name', 'Action']

        model = MyTableModel(data, headers)
        self.table_view.setModel(model)

        delegate = ButtonDelegate(self.table_view)
        delegate.buttonClicked.connect(self.handleButtonClicked)
        self.table_view.setItemDelegateForColumn(2, delegate)

    def handleButtonClicked(self, row, column):
        QMessageBox.information(self, 'Button Clicked', f'Button clicked at row {row}, column {column}')

if __name__ == '__main__':
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec_()