In pyqt5 browser Createwindows cannot update the url in urlbar - url

Question

I use Pyqt5 to bulit an easybrowser,in the webpage,most link will built a pop-up window to show new webpages,so I add the code:def createWindow(self, QWebEnginePage_WebWindowType): but en issue was followed:new webpage can not update the url in urlbar,and also the back\forward\stop\reload button doesn't work.it Confuse me so much!
here is my code:
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtWebEngineWidgets import *
import tkinter as tk
import sys
class MainWindow(QMainWindow):
# noinspection PyUnresolvedReferences
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# 设置窗口标题
self.setWindowTitle('My Browser')
# 设置窗口图标
self.setWindowIcon(QIcon('icons/penguin.png'))
# 设置窗口大小900*600
self.resize(900, 600)
self.show()
# 设置浏览器
self.browser = WebEngineView()
url = 'http://www.hao123.com'
# 指定打开界面的 URL
self.browser.setUrl(QUrl(url))
# 添加浏览器到窗口中
self.setCentralWidget(self.browser)
###使用QToolBar创建导航栏，并使用QAction创建按钮
# 添加导航栏
navigation_bar = QToolBar('Navigation')
# 设定图标的大小
navigation_bar.setIconSize(QSize(16, 16))
#添加导航栏到窗口中
self.addToolBar(navigation_bar)
#QAction类提供了抽象的用户界面action，这些action可以被放置在窗口部件中
# 添加前进、后退、停止加载和刷新的按钮
back_button = QAction(QIcon('icons/back.png'), 'Back', self)
next_button = QAction(QIcon('icons/next.png'), 'Forward', self)
stop_button = QAction(QIcon('icons/cross.png'), 'stop', self)
reload_button = QAction(QIcon('icons/renew.png'), 'reload', self)
back_button.triggered.connect(self.browser.back)
next_button.triggered.connect(self.browser.forward)
stop_button.triggered.connect(self.browser.stop)
reload_button.triggered.connect(self.browser.reload)
# 将按钮添加到导航栏上
navigation_bar.addAction(back_button)
navigation_bar.addAction(next_button)
navigation_bar.addAction(stop_button)
navigation_bar.addAction(reload_button)
#添加URL地址栏
self.urlbar = QLineEdit()
# 让地址栏能响应回车按键信号
self.urlbar.returnPressed.connect(self.navigate_to_url)
navigation_bar.addSeparator()
navigation_bar.addWidget(self.urlbar)
#让浏览器相应url地址的变化
self.browser.urlChanged.connect(self.renew_urlbar)
def navigate_to_url(self):
q = QUrl(self.urlbar.text())
if q.scheme() == '':
q.setScheme('http')
self.browser.setUrl(q)
def renew_urlbar(self, q):
# # 将当前网页的链接更新到地址栏
self.urlbar.setText(q.toString())
self.urlbar.setCursorPosition(0)
class WebEngineView(QWebEngineView):
windowList = []
# 重写createwindow()
def createWindow(self, QWebEnginePage_WebWindowType):
new_webview = WebEngineView()
new_window = MainWindow()
new_window.setCentralWidget(new_webview)
new_window.show()
self.windowList.append(new_window) # 注：没有这句会崩溃！！！
return new_webview
# 创建应用
app = QApplication(sys.argv)
if __name__ == "__main__":
app = QApplication.instance()
# 创建主窗口
window=MainWindow()
# 显示窗口
window.show()
# 运行应用，并监听事件
app.exec_()

Answer 1

You are creating the new window correctly, but you also set a new webview for that window while it already has one.
Just return its existing browser webview instead of creating a new one.
class WebEngineView(QWebEngineView):
windowList = []
def createWindow(self, QWebEnginePage_WebWindowType):
new_window = MainWindow()
new_window.show()
self.windowList.append(new_window)
return new_window.browser