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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2015-2019 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
#
# This file is part of qutebrowser.
#
# qutebrowser is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# qutebrowser is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
"""Customized QWebInspector for QtWebEngine."""
import os
from PyQt5.QtCore import QUrl
from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEngineSettings
from qutebrowser.browser import inspector
from qutebrowser.browser.webengine import webenginesettings
class WebEngineInspector(inspector.AbstractWebInspector):
"""A web inspector for QtWebEngine."""
def __init__(self, parent=None):
super().__init__(parent)
self.port = None
view = QWebEngineView()
self._settings = webenginesettings.WebEngineSettings(view.settings())
self._set_widget(view)
def _inspect_old(self, page):
"""Set up the inspector for Qt < 5.11."""
try:
port = int(os.environ['QTWEBENGINE_REMOTE_DEBUGGING'])
except KeyError:
raise inspector.WebInspectorError(
"QtWebEngine inspector is not enabled. See "
"'qutebrowser --help' for details.")
# We're lying about the URL here a bit, but this way, URL patterns for
# Qt 5.11/5.12/5.13 also work in this case.
self._settings.update_for_url(QUrl('chrome-devtools://devtools'))
if page is None:
self._widget.load(QUrl('about:blank'))
else:
self._widget.load(QUrl('http://localhost:{}/'.format(port)))
def _inspect_new(self, page):
"""Set up the inspector for Qt >= 5.11."""
inspector_page = self._widget.page()
inspector_page.setInspectedPage(page)
self._settings.update_for_url(inspector_page.requestedUrl())
def inspect(self, page):
try:
self._inspect_new(page)
except AttributeError:
self._inspect_old(page)
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