初心者でも絶対出来る自作ブラウザ[Python]第6章　ボタンの動作作成

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

# Form implementation generated from reading ui file 'browser2.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

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName("gridLayout")
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setObjectName("verticalLayout")
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout.addWidget(self.pushButton)
        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_2.setObjectName("pushButton_2")
        self.horizontalLayout.addWidget(self.pushButton_2)
        self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_3.setObjectName("pushButton_3")
        self.horizontalLayout.addWidget(self.pushButton_3)
        spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
        self.horizontalLayout.addItem(spacerItem)
        self.pushButton_4 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_4.setObjectName("pushButton_4")
        self.horizontalLayout.addWidget(self.pushButton_4)
        self.verticalLayout.addLayout(self.horizontalLayout)
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setObjectName("label")
        self.horizontalLayout_2.addWidget(self.label)
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setObjectName("lineEdit")
        self.horizontalLayout_2.addWidget(self.lineEdit)
        self.verticalLayout.addLayout(self.horizontalLayout_2)
        self.webEngineView = QtWebEngineWidgets.QWebEngineView(self.centralwidget)
        initurl = 'https://www.google.co.jp'
        self.webEngineView.setUrl(QtCore.QUrl(initurl))
        self.webEngineView.setObjectName("webEngineView")
        self.verticalLayout.addWidget(self.webEngineView)
        self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 17))
        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.pushButton_2.clicked.connect(self.webEngineView.forward)
        self.pushButton.clicked.connect(self.webEngineView.back)
        self.pushButton_3.clicked.connect(self.webEngineView.reload)
        self.lineEdit.returnPressed.connect(MainWindow.webPageUpdate)
        self.webEngineView.urlChanged['QUrl'].connect(MainWindow.urlLineSet)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "pyQtBrowser"))
        self.pushButton.setText(_translate("MainWindow", "戻る"))
        self.pushButton_2.setText(_translate("MainWindow", "進む"))
        self.pushButton_3.setText(_translate("MainWindow", "更新"))
        self.pushButton_4.setText(_translate("MainWindow", "お気に入り"))
        self.label.setText(_translate("MainWindow", "URL："))

from PyQt5 import QtWebEngineWidgets

        self.lineEdit.returnPressed.connect(MainWindow.webPageUpdate)
        self.webEngineView.urlChanged['QUrl'].connect(MainWindow.urlLineSet)

import sys
from PyQt5 import QtWidgets
from browser3Ui import Ui_MainWindow
from PyQt5.QtCore import QUrl

class browserUI(QtWidgets.QMainWindow):
    def __init__(self,parent=None):
        super(browserUI, self).__init__(parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

    def webPageUpdate(self):
        self.ui.webEngineView.setUrl(QUrl(self.ui.lineEdit.text()))

    def urlLineSet(self, QUrl):
        self.ui.lineEdit.setText(self.ui.webEngineView.url().url())

if __name__ == '__main__':
  app = QtWidgets.QApplication(sys.argv)
  window = browserUI()
  window.show()
  sys.exit(app.exec_())

def webPageUpdate(self):
    self.ui.webEngineView.setUrl(QUrl(self.ui.lineEdit.text()))

def urlLineSet(self, QUrl):
    self.ui.lineEdit.setText(self.ui.webEngineView.url().url())