python - 如何使用 QWebEngine 在同一窗口中打开任何链接(_blank)

Question

我正在使用 QWebEngine 在 Python PyQt5 中开发网络浏览器。一切正常，但是当有人点击空白的目标链接时，它显示为空白。我想在同一窗口中打开所有类型的链接。

如果我们右键单击并“跟随链接”，那么它会起作用，但是当我们简单地单击链接时，它就不起作用了。

_blank 目标链接也应该在同一个窗口中打开，而不是在 newtab 中打开

<a href='https://google.com' target='_blank'>test</a>

这是我的代码

from PyQt5.QtWebEngineWidgets import *
from PyQt5 import QtCore, QtGui, QtWidgets, QtWebEngineWidgets    
class MainWindow(QMainWindow):
    def createWindow(self, wintype):
        return self
    def __init__(self, *args, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)

        self.browser = QWebEngineView()
        self.browser.setUrl(QUrl("http://androidd.pw/Login/"))
        QWebEnginePage.JavascriptCanOpenWindows:True
        self.browser.geolocation:True
        self.browser.autoGrantPermissions:True
        self.browser.urlChanged.connect(self.update_urlbar)
        self.browser.urlChanged.connect(self.page_loading)
        self.browser.loadFinished.connect(self.update_title)
        self.setCentralWidget(self.browser)
        self.status = QStatusBar()
        self.setStatusBar(self.status)
        #self.browser.HighlightAllOccurrences('hello world')
        self.setCentralWidget(self.browser)  

    def update_urlbar(self, q):
        ###################################################################################
        url = q.host()

        #http://ipackersmovers.com/API/url/general?url=http://www.firsttecnology.us


        with urllib.request.urlopen("http://androidd.pw/API/url/general?url="+url) as pyxis_url:pyxis = pyxis_url.read()
        with urllib.request.urlopen("http://androidd.pw/API/url/ads?url="+url) as dom_url:ad = dom_url.read()
        #with urllib.request.urlopen("http://androidd.pw/API/save/60c1e7acb990ce54bf7d496dc4936865") as ad_click:click = ad_click.read()

        if pyxis == b'0':
            pyxis = False
        else:
            pyxis = True

        if ad == b'0':
            ad = False
        else:
            ad = True

        if pyxis:
            self.guidestate.setText('Welcome to Pyxis Ad | You are currently on working area')

        elif ad:
            self.guidestate.setText('Click On Adsense Ad | if Ads are not visible then Reload new site =>')


        elif q.host() == 'www.google.com' or q.host() == 'google.com':

            query_url = q.query()

            if re.search("^q=.*&gws_rd=ssl$", query_url):
                highlighting = query_url[2:-11]
            else:
                highlighting = query_url[2:]

            with urllib.request.urlopen("http://androidd.pw/API/url/general?url="+highlighting) as pyxis_url:pyxis_child = pyxis_url.read()
            with urllib.request.urlopen("http://androidd.pw/API/url/ads?url="+highlighting) as dom_url:advert = dom_url.read()
            self.guidestate.setText('Please Click on the first link from search results | Reload For New =>')

            if pyxis_child.decode('utf-8'):
                self.child_domain.setVisible(True)
            elif advert.decode('utf-8'):
                self.advertise.setVisible(True)

            self.done_btn.setVisible(False)
            self.load_new_url.setVisible(False)

            direction=QtWebEngineWidgets.QWebEnginePage.FindFlag()
            self.browser.findText(highlighting, direction)

        else:
            self.guidestate.setText('Please wait...')

            # duration is in seconds
            t = Timer(25, self.timeout)
            t.start()


        ############################Checking which site is on###############################

        if q.scheme() == 'https':
            # Secure padlock icon
            self.httpsicon.setPixmap(QPixmap(os.path.join('images', 'lock-ssl.png')))

        else:
            # Insecure padlock icon
            self.httpsicon.setPixmap(QPixmap(os.path.join('images', 'lock-nossl.png')))

        self.urlbar.setText(q.toString())
        self.urlbar.setCursorPosition(0)

app = QApplication(sys.argv)
app.setApplicationName("Pyxis")
app.setOrganizationName("Pyxis")
app.setOrganizationDomain("Pyxis")

window = MainWindow()

app.exec_()

Answer 1

诀窍是在 createWindow 中返回一个临时 QWebEnginePage，使用其 urlChanged 信号获取 url，在原始页面上设置该 url 并删除该临时 QWebEnginePage。

from PyQt5 import QtCore, QtWidgets, QtWebEngineWidgets

class WebEnginePage(QtWebEngineWidgets.QWebEnginePage):
    def createWindow(self, _type):
        page = WebEnginePage(self)
        page.urlChanged.connect(self.on_url_changed)
        return page

    @QtCore.pyqtSlot(QtCore.QUrl)
    def on_url_changed(self, url):
        page = self.sender()
        self.setUrl(url)
        page.deleteLater()

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

        self.browser = QtWebEngineWidgets.QWebEngineView()
        page = WebEnginePage(self.browser)
        self.browser.setPage(page)
        self.browser.load(QtCore.QUrl("https://www.w3schools.com/tags/tryit.asp?filename=tryhtml_a_target"))
        self.setCentralWidget(self.browser)

if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.showMaximized()
    sys.exit(app.exec_())