如何在单击QTableView时获取委托项

Question

下面的代码会创建单个QTableView。有一个QItemDelegate被指定为PersistentEditor。创建了两种编辑器：为列0创建QLineEdit，为列1创建＆＃39; QComboBox`。

当点击tableView时，我想获得两个编辑器的实例：LineEdit的实例和comboBox的实例。怎么做到这一点？

from PyQt4 import QtCore, QtGui
app = QtGui.QApplication([])

class Delegate(QtGui.QItemDelegate):
    def __init__(self):
        QtGui.QItemDelegate.__init__(self)

    def createEditor(self, parent, option, index):
        if index.column()==0:
            lineedit=QtGui.QLineEdit(parent)
            return lineedit

        elif index.column()==1:
            combo=QtGui.QComboBox(parent)
            return combo

    def setEditorData(self, editor, index):
        row = index.row()
        column = index.column()
        value = index.model().items[row][column]
        if isinstance(editor, QtGui.QComboBox):
            editor.addItems(['Somewhere','Over','The Rainbow'])
            editor.setCurrentIndex(index.row())
        if isinstance(editor, QtGui.QLineEdit):
            editor.setText('Somewhere over the rainbow')

class Model(QtCore.QAbstractTableModel):
    def __init__(self):
        QtCore.QAbstractTableModel.__init__(self)
        self.items = [[1, 'one', 'ONE'], [2, 'two', 'TWO'], [3, 'three', 'THREE']]

    def flags(self, index):
        return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEditable
    def rowCount(self, parent=QtCore.QModelIndex()):
        return 3 
    def columnCount(self, parent=QtCore.QModelIndex()):
        return 3

    def data(self, index, role):
        if not index.isValid(): return 
        row = index.row()
        column = index.column()
        if role == QtCore.Qt.DisplayRole or role == QtCore.Qt.EditRole:
            return self.items[row][column]


def tableViewClicked(index):
    print 'clicked indedx:  %s'%index

tableModel=Model()
tableView=QtGui.QTableView() 
tableView.setModel(tableModel)
tableView.setItemDelegate(Delegate())
tableView.clicked.connect(tableViewClicked)

for row in range(tableModel.rowCount()):
    for column in range(tableModel.columnCount()):
        index=tableModel.index(row, column)
        tableView.openPersistentEditor(index)

tableView.show()
app.exec_()