如何在 QWebKit 浏览器中保持当前 URL 更新

Question

我正在使用 PyQt5 WebKit 制作一个带有搜索框的非常简单的浏览器。这是我正在使用的代码：

import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton, QAction, QLineEdit, QMessageBox, QMainWindow, QGridLayout)
from PyQt5.QtWebKitWidgets import QWebView


class App(QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)

        centralWidget   = QWidget()
        self.setCentralWidget(centralWidget)

        self.searchbox = QLineEdit("", self)
        self.go = QPushButton('Go', self)
        self.go.clicked.connect(self.gourl)  
        self.webview = Browser()        

        self.grid = QGridLayout(centralWidget)
        self.grid.addWidget(self.webview, 0, 0, 1, 4)
        self.grid.addWidget(self.searchbox, 1, 0)
        self.grid.addWidget(self.go, 1, 1)

    def gourl(self):
        url = self.searchbox.text()
        self.webview.load(QUrl(url))


class Browser(QWebView):   #(QWebView):
    windowList = []
    def createWindow(self, QWebEnginePage_WebWindowType):
        App.setCentralWidget(Browser())
        #new_window.show()
        self.windowList.append(App())  
        return Browser()

if __name__ == "__main__":    
    app = QApplication(sys.argv)
    box = App()
    box.setWindowTitle('Browser')
    box.resize(600, 500)
    box.show()
    sys.exit(app.exec_())

我想使用用户当前使用的任何 URL 来更新框中的 URL。我不知道该怎么做，任何帮助将不胜感激。

Answer 1

下面是对您的示例的重写，它应该可以满足您的需求。

Browser 类已得到修复，以便在请求新窗口时创建App 的新实例。您可以通过右键单击链接并选择在新窗口中打开来测试它。每当更改时，搜索框都会自动更新为新的 url。

import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton, QAction, QLineEdit, QMessageBox, QMainWindow, QGridLayout)
from PyQt5.QtWebKitWidgets import QWebView


class App(QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)

        centralWidget   = QWidget()
        self.setCentralWidget(centralWidget)

        self.searchbox = QLineEdit("", self)
        self.go = QPushButton('Go', self)
        self.go.clicked.connect(self.gourl)
        self.webview = Browser()
        self.webview.urlChanged.connect(self.handleUrlChanged)

        self.grid = QGridLayout(centralWidget)
        self.grid.addWidget(self.webview, 0, 0, 1, 4)
        self.grid.addWidget(self.searchbox, 1, 0)
        self.grid.addWidget(self.go, 1, 1)

    def gourl(self):
        url = self.searchbox.text()
        self.webview.load(QUrl(url))

    def handleUrlChanged(self, url):
        self.searchbox.setText(url.toString())


class Browser(QWebView):
    windowList = []

    def createWindow(self, wintype):
        window = App()
        self.windowList.append(window)
        window.show()
        return window.webview

    def closeEvent(self, event):
        self.windowList.remove(self)
        super().closeEvent(event)


if __name__ == "__main__":

    app = QApplication(sys.argv)
    box = App()
    box.setWindowTitle('Browser')
    box.resize(600, 500)
    box.show()
    sys.exit(app.exec_())