Acces to qlineedit from another class

AnasHanlab

I am new in Python/Qt designer, I am trying to create an application with Qt Designer. I added a application with 2 tab, the first one I create a button to add a text in the second tab. You can see in the second tab it's a simple lineedit (where the text will displayed). When I click in the button, slot signal is activated but nothing changed in the second tab. I don't know how can I get the index of the tab and use it when I need to change the settext of the lineedit in the second tab.


# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'EXample_simple_Tab_Main.ui'
#
# Created by: PyQt5 UI code generator 5.9.2
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import QObject, pyqtSlot                                        

class Populate_Tab(QtWidgets.QWidget):

    def Populate_BCU_Info(obj):
        # print("final self",type(self))
        Value ="10.22"

        obj.Tab_Ip_Adress_2.setText(Value)

        print("resultat",obj.Tab_Ip_Adress_2.text())


class TabPage(QtWidgets.QWidget):
    def __init__(self, parent):
        super().__init__()
                          
        self.tab_2 = QtWidgets.QWidget()
        self.tab_2.setObjectName("tab_2")
        self.Tab_Ip_Adress_2 = QtWidgets.QLineEdit(self)
        self.Tab_Ip_Adress_2.setGeometry(QtCore.QRect(130, 110, 120, 20))
        self.Tab_Ip_Adress_2.setStyleSheet("background-color: rgb(169, 255, 8);\n"
"")
        self.Tab_Ip_Adress_2.setReadOnly(False)
        self.Tab_Ip_Adress_2.setObjectName("Tab_Ip_Adress_2")
        self.Tab_Ip_Adress_2.setText("test from tab")



class Ui_MainWindow(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(1179, 945)
        MainWindow.setStyleSheet("background-color: rgb(255, 255, 255);")
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.verticalLayout_3 = QtWidgets.QVBoxLayout(self.centralwidget)
        self.verticalLayout_3.setObjectName("verticalLayout_3")
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setObjectName("verticalLayout")
        self.tabWidget = QtWidgets.QTabWidget(self.centralwidget)
        self.tabWidget.setTabsClosable(True)
        self.tabWidget.setObjectName("tabWidget")
        self.tab = QtWidgets.QWidget()
        self.tab.setObjectName("tab")
        self.gridLayout = QtWidgets.QGridLayout(self.tab)
        self.gridLayout.setObjectName("gridLayout")
        self.pushButton = QtWidgets.QPushButton(self.tab)
        self.pushButton.setObjectName("pushButton")
        self.gridLayout.addWidget(self.pushButton, 0, 0, 1, 1)

        self.tabWidget.addTab(self.tab, "")
                                  
        self.verticalLayout.addWidget(self.tabWidget)
        self.verticalLayout_3.addLayout(self.verticalLayout)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 1179, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        self.tabWidget.setCurrentIndex(0)
        # self.tabWidget.tabCloseRequested['int'].connect(MainWindow.CloseTab)
        self.pushButton.clicked.connect(lambda x:self.CreatNewTab())
        # self.pushButton_New.clicked.connect(lambda x:self.CreatNewTab2())
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "PushButton"))
        # self.pushButton_New.setText(_translate("MainWindow", "New_test"))
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab), _translate("MainWindow", "Main"))
                                                                                                       
    @pyqtSlot( )
    def CreatNewTab( self ):
        """create a tab from the list of the BCUs"""
        List_of_BCUs = ["10.22.91.103"]
        # print(List_of_BCUs)
        for i in range (len(List_of_BCUs)):
            if List_of_BCUs[i] != '':
                text = List_of_BCUs[i]
                # print(type(self))
                # TabPage(self)
                index_tab = self.tabWidget.addTab(TabPage(self), text ) 

                # Populate_Tab(TabPage(self))
                # Testons = Populate_Tab.Populate_BCU_Info(TabPage(self))
                # print(index_tab)
                Populate_Tab.Populate_BCU_Info(TabPage(self))
        pass  

                            



if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()

    # ui.setupUi(MainWindow)

    MainWindow.show()
    sys.exit(app.exec_())

I think that the call function is correct, I can have acces to "Tab_Ip_Adress_2" qlinewidget, and settext is working fine but it's not displayed in the window I don't why, please any help :)

jsulm

@AnasHanlab said in Acces to qlineedit from another class:

index_tab = self.tabWidget.addTab(TabPage(self), text )

Populate_Tab.Populate_BCU_Info(TabPage(self))

You are creating two different TabPage instances here and change the text on the second one.

AnasHanlab

@jsulm ,
thank you for the reactivity.
the first line index_tab = self.tabWidget.addTab(TabPage(self), text ), is to create a new tab from the main with the slot.
and the second one is to populate this new tab page.
How can I populate the tab created before ?

jsulm

@AnasHanlab said in Acces to qlineedit from another class:

and the second one is to populate this new tab page.

But you are NOT populating the one you created, you are populating a new one!
Why not simply:

tabPage = TabPage(self)
index_tab = self.tabWidget.addTab(tabPage, text )
Populate_Tab.Populate_BCU_Info(tabPage)

AnasHanlab

oh magic, I had a doubt about it I didn't have any way to check it.
Thank you so much you resolved my issue :)