QtWebView (問題がある場合は PyQt) でページを開いていますが、すべてのリンクをシステムの既定のブラウザーで開きたいと考えています。つまり、リンクをクリックしても QtWebView のサイトは変更されませんが、デフォルトのブラウザで開く必要があります。ユーザーが QtWebView でサイトを変更できないようにしたい。
どうやってやるの?
ありがとう、アルバート
それはそれをします:
import sys, webbrowser
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import *
app = QApplication(sys.argv)
web = QWebView()
web.load(QUrl("http://www.az2000.de/projects/javascript-project/"))
web.page().setLinkDelegationPolicy(QWebPage.DelegateAllLinks)
def linkClicked(url): webbrowser.open(str(url.toString()))
web.connect(web, SIGNAL("linkClicked (const QUrl&)"), linkClicked)
web.show()
sys.exit(app.exec_())
PyQt5 の更新された例 (魔法は「acceptNavigationRequest」メソッドを再実装することです):
from PyQt5 import QtWidgets, QtCore, QtGui, QtWebEngineWidgets
class RestrictedQWebEnginePage(QtWebEngineWidgets.QWebEnginePage):
""" Filters links so that users cannot just navigate to any page on the web,
but just to those pages, that are listed in allowed_pages.
This is achieved by re-implementing acceptNavigationRequest.
The latter could also be adapted to accept, e.g. URLs within a domain."""
def __init__(self, parent=None):
super().__init__(parent)
self.allowed_pages = []
def acceptNavigationRequest(self, qurl, navtype, mainframe):
# print("Navigation Request intercepted:", qurl)
if qurl in self.allowed_pages: # open in QWebEngineView
return True
else: # delegate link to default browser
QtGui.QDesktopServices.openUrl(qurl)
return False
class RestrictedWebViewWidget(QtWidgets.QWidget):
"""A QWebEngineView is required to display a QWebEnginePage."""
def __init__(self, parent=None, url=None, html_file=None):
super().__init__(parent)
self.view = QtWebEngineWidgets.QWebEngineView()
self.page = RestrictedQWebEnginePage()
if html_file:
print("Loading File:", html_file)
self.url = QtCore.QUrl.fromLocalFile(html_file)
self.page.allowed_pages.append(self.url)
self.page.load(self.url)
elif url:
print("Loading URL:", url)
self.url = QtCore.QUrl(url)
self.page.allowed_pages.append(self.url)
self.page.load(self.url)
# associate page with view
self.view.setPage(self.page)
# set layout
self.vl = QtWidgets.QVBoxLayout()
self.vl.addWidget(self.view)
self.setLayout(self.vl)
if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
web = RestrictedWebViewWidget(url="YOUR URL") # or YOUR local HTML file
web.show()
sys.exit(app.exec_())