PyQt5 toggle multiple checkboxes in a QTable

I have a PyQt5 table that shows the content of a folder together with a checkbox for each element. I want to add a toggle switch, that allows the user to select/deselect all files. I fail to get it switching back and forth, since I need to count the times the toggle bottom is clicked and pass that to the toggle function. Any help is appreciated. Below is my example.

Thanks Alex

import sys
import tempfile
import time
import ntpath
import os
from os import listdir
from os.path import isfile, join
import platform
import subprocess
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QPushButton, QScrollArea, QVBoxLayout, QCheckBox, QInputDialog, QLineEdit, QComboBox, QMessageBox, QWidget, QDialog
from PyQt5.QtCore import Qt, QSize
from PyQt5.QtWidgets import QTableWidget,QTableWidgetItem, QLabel
from PyQt5.QtGui import QPixmap, QIcon


LastStateRole = QtCore.Qt.UserRole


class Ui_brows(object):
    def createFileTable(self, fileList):
        self.fileTable = QTableWidget()
        self.fileTable.setRowCount(len(fileList))
        self.fileTable.setColumnCount(4)
        self.fileTable.setHorizontalHeaderLabels(['Include', 'Target','Name', 'Path'])
        for l in range (len(fileList)):
            item = QtWidgets.QTableWidgetItem()
            item.setFlags(QtCore.Qt.ItemIsUserCheckable | QtCore.Qt.ItemIsEnabled)
            item.setCheckState(QtCore.Qt.Checked)
            item.setData(LastStateRole, item.checkState())
            self.fileTable.setItem(l,0,item)
            self.fileTable.setItem(l,1,QTableWidgetItem(""))
            nameString = ntpath.basename(fileList[l])
            self.fileTable.setItem(l,2,QTableWidgetItem(nameString))
            self.fileTable.setItem(l,3,QTableWidgetItem(fileList[l]))
        self.fileTable.setColumnWidth(0,40)
        self.fileTable.setColumnWidth(0,80)
        if self.table_place_holder_layout.count():
            self.table_place_holder_layout.takeAt(0).widget().deleteLater()
        self.table_place_holder_layout.addWidget(self.fileTable)

    def _open_file_dialog(self):
        directory = str(QtWidgets.QFileDialog.getExistingDirectory())
        if not directory:
            return
        fileList = []
        for f in listdir(directory):
            fileList.append(f)
        self.createFileTable(fileList)

    def toggleChekbox(self, timesClicked):
        
        if (timesClicked % 2) == 0:
            for l in range (self.fileTable.rowCount()):
                self.fileTable.item(l,0).setCheckState(True)
                timesClicked = timesClicked +1
        else:
            for l in range (self.fileTable.rowCount()):
                self.fileTable.item(l,0).setCheckState(False)
                timesClicked = timesClicked +1

    def setupUi(self, brows):
        brows.setObjectName("MyApp")
        brows.resize(900, 600)

        #### line 1
        self.toolButtonOpenDialog = QtWidgets.QToolButton(brows)
        self.toolButtonOpenDialog.setGeometry(QtCore.QRect(310, 10, 35, 19))
        self.toolButtonOpenDialog.setObjectName("toolButtonOpenDialog")
        self.toolButtonOpenDialog.clicked.connect(self._open_file_dialog)

        self.importPath = QtWidgets.QLineEdit(brows)
        self.importPath.setEnabled(False)
        self.importPath.setGeometry(QtCore.QRect(110, 10, 191, 20))
        self.importPath.setObjectName("importPath")

        self.label1 = QtWidgets.QLabel(brows)
        self.label1.setText('Folder to scan')
        self.label1.setGeometry(QtCore.QRect(10,10,90,20))
        self.label1.setObjectName("Label1")

        self.label11 = QtWidgets.QLabel(brows)
        self.label11.setText('Scan Depth')
        self.label11.setGeometry(QtCore.QRect(370,10,90,20))
        self.label11.setObjectName("Label11")

        self.folderDepth = QComboBox(brows)
        self.folderDepth.addItems(['1','2','3','>3'])
        self.folderDepth.setGeometry(QtCore.QRect(450,8,50,25))
        self.folderDepth.setObjectName("FolderDepth")

        #### line 2
        self.label2 = QtWidgets.QLabel(brows)
        self.label2.setText('Local mount')
        self.label2.setGeometry(QtCore.QRect(10,50,90,20))
        self.label2.setObjectName("Label2")

        self.localMount = QtWidgets.QLineEdit(brows)
        self.localMount.setEnabled(True)
        self.localMount.setGeometry(QtCore.QRect(100, 50, 90, 20))
        self.localMount.setObjectName("localMount")

        self.label3 = QtWidgets.QLabel(brows)
        self.label3.setText('Remote mount')
        self.label3.setGeometry(QtCore.QRect(230,50,90,20))
        self.label3.setObjectName("Label3")

        self.remoteMount = QtWidgets.QLineEdit(brows)
        self.remoteMount.setEnabled(True)
        self.remoteMount.setGeometry(QtCore.QRect(330, 50, 80, 20))
        self.remoteMount.setObjectName("remoteMount")

        self.Toggle = QPushButton(brows)
        self.Toggle.setStyleSheet('QPushButton {color: black;}')
        self.Toggle.setText("Toggle")
        self.Toggle.setGeometry(QtCore.QRect(10,70,90,20))
        self.Toggle.clicked.connect(self.toggleChekbox)

        #### line 3
        self.table_place_holder = QtWidgets.QWidget(brows)
        self.table_place_holder_layout = QVBoxLayout(self.table_place_holder)
        self.table_place_holder.setGeometry(QtCore.QRect(10, 100, 880, 400))

        self.retranslateUi(brows)
        QtCore.QMetaObject.connectSlotsByName(brows)

    def retranslateUi(self, brows):
        _translate = QtCore.QCoreApplication.translate
        brows.setWindowTitle(_translate("myApp", "MyApp"))
        self.toolButtonOpenDialog.setText(_translate("brows", "..."))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    brows = QtWidgets.QDialog()
    ui = Ui_brows()
    ui.setupUi(brows)
    brows.show()

    sys.exit(app.exec_())