Coverage for qutebrowser/browser/webengine/webenginetab.py : 0%

# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et: 

# Copyright 2016-2018 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/>. 

"""Wrapper over a QWebEngineView.""" 

import math 

import functools 

import sys 

import html as html_utils 

import sip 

from PyQt5.QtCore import (pyqtSignal, pyqtSlot, Qt, QEvent, QPoint, QPointF, 

QUrl) 

from PyQt5.QtGui import QKeyEvent 

from PyQt5.QtNetwork import QAuthenticator 

from PyQt5.QtWidgets import QApplication 

from PyQt5.QtWebEngineWidgets import QWebEnginePage, QWebEngineScript 

from qutebrowser.browser import browsertab, mouse, shared 

from qutebrowser.browser.webengine import (webview, webengineelem, tabhistory, 

interceptor, webenginequtescheme, 

webenginedownloads, 

webenginesettings) 

from qutebrowser.misc import miscwidgets 

from qutebrowser.utils import (usertypes, qtutils, log, javascript, utils, 

message, objreg, jinja, debug) 

_qute_scheme_handler = None 

def init(): 

"""Initialize QtWebEngine-specific modules.""" 

# For some reason we need to keep a reference, otherwise the scheme handler 

# won't work... 

# https://www.riverbankcomputing.com/pipermail/pyqt/2016-September/038075.html 

global _qute_scheme_handler 

app = QApplication.instance() 

log.init.debug("Initializing qute://* handler...") 

_qute_scheme_handler = webenginequtescheme.QuteSchemeHandler(parent=app) 

_qute_scheme_handler.install(webenginesettings.default_profile) 

_qute_scheme_handler.install(webenginesettings.private_profile) 

log.init.debug("Initializing request interceptor...") 

host_blocker = objreg.get('host-blocker') 

req_interceptor = interceptor.RequestInterceptor( 

host_blocker, parent=app) 

req_interceptor.install(webenginesettings.default_profile) 

req_interceptor.install(webenginesettings.private_profile) 

log.init.debug("Initializing QtWebEngine downloads...") 

download_manager = webenginedownloads.DownloadManager(parent=app) 

download_manager.install(webenginesettings.default_profile) 

download_manager.install(webenginesettings.private_profile) 

objreg.register('webengine-download-manager', download_manager) 

greasemonkey = objreg.get('greasemonkey') 

greasemonkey.scripts_reloaded.connect(webenginesettings.inject_userscripts) 

webenginesettings.inject_userscripts() 

# Mapping worlds from usertypes.JsWorld to QWebEngineScript world IDs. 

_JS_WORLD_MAP = { 

usertypes.JsWorld.main: QWebEngineScript.MainWorld, 

usertypes.JsWorld.application: QWebEngineScript.ApplicationWorld, 

usertypes.JsWorld.user: QWebEngineScript.UserWorld, 

usertypes.JsWorld.jseval: QWebEngineScript.UserWorld + 1, 

} 

class WebEngineAction(browsertab.AbstractAction): 

"""QtWebEngine implementations related to web actions.""" 

action_class = QWebEnginePage 

action_base = QWebEnginePage.WebAction 

def exit_fullscreen(self): 

self._widget.triggerPageAction(QWebEnginePage.ExitFullScreen) 

def save_page(self): 

"""Save the current page.""" 

self._widget.triggerPageAction(QWebEnginePage.SavePage) 

def show_source(self): 

try: 

self._widget.triggerPageAction(QWebEnginePage.ViewSource) 

except AttributeError: 

# Qt < 5.8 

tb = objreg.get('tabbed-browser', scope='window', 

window=self._tab.win_id) 

urlstr = self._tab.url().toString(QUrl.RemoveUserInfo) 

# The original URL becomes the path of a view-source: URL 

# (without a host), but query/fragment should stay. 

url = QUrl('view-source:' + urlstr) 

tb.tabopen(url, background=False, related=True) 

class WebEnginePrinting(browsertab.AbstractPrinting): 

"""QtWebEngine implementations related to printing.""" 

def check_pdf_support(self): 

return True 

def check_printer_support(self): 

if not hasattr(self._widget.page(), 'print'): 

raise browsertab.WebTabError( 

"Printing is unsupported with QtWebEngine on Qt < 5.8") 

def check_preview_support(self): 

raise browsertab.WebTabError( 

"Print previews are unsupported with QtWebEngine") 

def to_pdf(self, filename): 

self._widget.page().printToPdf(filename) 

def to_printer(self, printer, callback=None): 

if callback is None: 

callback = lambda _ok: None 

self._widget.page().print(printer, callback) 

class WebEngineSearch(browsertab.AbstractSearch): 

"""QtWebEngine implementations related to searching on the page. 

Attributes: 

_flags: The QWebEnginePage.FindFlags of the last search. 

_pending_searches: How many searches have been started but not called 

back yet. 

""" 

def __init__(self, parent=None): 

super().__init__(parent) 

self._flags = QWebEnginePage.FindFlags(0) 

self._pending_searches = 0 

def _find(self, text, flags, callback, caller): 

"""Call findText on the widget.""" 

self.search_displayed = True 

self._pending_searches += 1 

def wrapped_callback(found): 

"""Wrap the callback to do debug logging.""" 

self._pending_searches -= 1 

if self._pending_searches > 0: 

# See https://github.com/qutebrowser/qutebrowser/issues/2442 

# and https://github.com/qt/qtwebengine/blob/5.10/src/core/web_contents_adapter.cpp#L924-L934 

log.webview.debug("Ignoring cancelled search callback with " 

"{} pending searches".format( 

self._pending_searches)) 

return 

found_text = 'found' if found else "didn't find" 

if flags: 

flag_text = 'with flags {}'.format(debug.qflags_key( 

QWebEnginePage, flags, klass=QWebEnginePage.FindFlag)) 

else: 

flag_text = '' 

log.webview.debug(' '.join([caller, found_text, text, flag_text]) 

.strip()) 

if callback is not None: 

callback(found) 

self._widget.findText(text, flags, wrapped_callback) 

def search(self, text, *, ignore_case='never', reverse=False, 

result_cb=None): 

self.text = text 

self._flags = QWebEnginePage.FindFlags(0) 

if self._is_case_sensitive(ignore_case): 

self._flags |= QWebEnginePage.FindCaseSensitively 

if reverse: 

self._flags |= QWebEnginePage.FindBackward 

self._find(text, self._flags, result_cb, 'search') 

def clear(self): 

self.search_displayed = False 

self._widget.findText('') 

def prev_result(self, *, result_cb=None): 

# The int() here makes sure we get a copy of the flags. 

flags = QWebEnginePage.FindFlags(int(self._flags)) 

if flags & QWebEnginePage.FindBackward: 

flags &= ~QWebEnginePage.FindBackward 

else: 

flags |= QWebEnginePage.FindBackward 

self._find(self.text, flags, result_cb, 'prev_result') 

def next_result(self, *, result_cb=None): 

self._find(self.text, self._flags, result_cb, 'next_result') 

class WebEngineCaret(browsertab.AbstractCaret): 

"""QtWebEngine implementations related to moving the cursor/selection.""" 

@pyqtSlot(usertypes.KeyMode) 

def _on_mode_entered(self, mode): 

if mode != usertypes.KeyMode.caret: 

return 

self._tab.run_js_async( 

javascript.assemble('caret', 'setPlatform', sys.platform)) 

self._js_call('setInitialCursor') 

@pyqtSlot(usertypes.KeyMode) 

def _on_mode_left(self, mode): 

if mode != usertypes.KeyMode.caret: 

return 

self.drop_selection() 

self._js_call('disableCaret') 

def move_to_next_line(self, count=1): 

for _ in range(count): 

self._js_call('moveDown') 

def move_to_prev_line(self, count=1): 

for _ in range(count): 

self._js_call('moveUp') 

def move_to_next_char(self, count=1): 

for _ in range(count): 

self._js_call('moveRight') 

def move_to_prev_char(self, count=1): 

for _ in range(count): 

self._js_call('moveLeft') 

def move_to_end_of_word(self, count=1): 

for _ in range(count): 

self._js_call('moveToEndOfWord') 

def move_to_next_word(self, count=1): 

for _ in range(count): 

self._js_call('moveToNextWord') 

def move_to_prev_word(self, count=1): 

for _ in range(count): 

self._js_call('moveToPreviousWord') 

def move_to_start_of_line(self): 

self._js_call('moveToStartOfLine') 

def move_to_end_of_line(self): 

self._js_call('moveToEndOfLine') 

def move_to_start_of_next_block(self, count=1): 

for _ in range(count): 

self._js_call('moveToStartOfNextBlock') 

def move_to_start_of_prev_block(self, count=1): 

for _ in range(count): 

self._js_call('moveToStartOfPrevBlock') 

def move_to_end_of_next_block(self, count=1): 

for _ in range(count): 

self._js_call('moveToEndOfNextBlock') 

def move_to_end_of_prev_block(self, count=1): 

for _ in range(count): 

self._js_call('moveToEndOfPrevBlock') 

def move_to_start_of_document(self): 

self._js_call('moveToStartOfDocument') 

def move_to_end_of_document(self): 

self._js_call('moveToEndOfDocument') 

def toggle_selection(self): 

self._js_call('toggleSelection') 

def drop_selection(self): 

self._js_call('dropSelection') 

def selection(self, callback): 

# Not using selectedText() as WORKAROUND for 

# https://bugreports.qt.io/browse/QTBUG-53134 

# Even on Qt 5.10 selectedText() seems to work poorly, see 

# https://github.com/qutebrowser/qutebrowser/issues/3523 

self._tab.run_js_async(javascript.assemble('caret', 'getSelection'), 

callback) 

def _follow_selected_cb(self, js_elem, tab=False): 

"""Callback for javascript which clicks the selected element. 

Args: 

js_elem: The element serialized from javascript. 

tab: Open in a new tab. 

""" 

if js_elem is None: 

return 

assert isinstance(js_elem, dict), js_elem 

elem = webengineelem.WebEngineElement(js_elem, tab=self._tab) 

if tab: 

click_type = usertypes.ClickTarget.tab 

else: 

click_type = usertypes.ClickTarget.normal 

# Only click if we see a link 

if elem.is_link(): 

log.webview.debug("Found link in selection, clicking. ClickTarget " 

"{}, elem {}".format(click_type, elem)) 

elem.click(click_type) 

def follow_selected(self, *, tab=False): 

if self._tab.search.search_displayed: 

# We are currently in search mode. 

# let's click the link via a fake-click 

# https://bugreports.qt.io/browse/QTBUG-60673 

self._tab.search.clear() 

log.webview.debug("Clicking a searched link via fake key press.") 

# send a fake enter, clicking the orange selection box 

if tab: 

self._tab.key_press(Qt.Key_Enter, modifier=Qt.ControlModifier) 

else: 

self._tab.key_press(Qt.Key_Enter) 

else: 

# click an existing blue selection 

js_code = javascript.assemble('webelem', 'find_selected_link') 

self._tab.run_js_async(js_code, lambda jsret: 

self._follow_selected_cb(jsret, tab)) 

def _js_call(self, command): 

self._tab.run_js_async( 

javascript.assemble('caret', command)) 

class WebEngineScroller(browsertab.AbstractScroller): 

"""QtWebEngine implementations related to scrolling.""" 

def __init__(self, tab, parent=None): 

super().__init__(tab, parent) 

self._args = objreg.get('args') 

self._pos_perc = (0, 0) 

self._pos_px = QPoint() 

self._at_bottom = False 

def _init_widget(self, widget): 

super()._init_widget(widget) 

page = widget.page() 

page.scrollPositionChanged.connect(self._update_pos) 

def _repeated_key_press(self, key, count=1, modifier=Qt.NoModifier): 

"""Send count fake key presses to this scroller's WebEngineTab.""" 

for _ in range(min(count, 5000)): 

self._tab.key_press(key, modifier) 

@pyqtSlot(QPointF) 

def _update_pos(self, pos): 

"""Update the scroll position attributes when it changed.""" 

self._pos_px = pos.toPoint() 

contents_size = self._widget.page().contentsSize() 

scrollable_x = contents_size.width() - self._widget.width() 

if scrollable_x == 0: 

perc_x = 0 

else: 

try: 

perc_x = min(100, round(100 / scrollable_x * pos.x())) 

except ValueError: 

# https://github.com/qutebrowser/qutebrowser/issues/3219 

log.misc.debug("Got ValueError!") 

log.misc.debug("contents_size.width(): {}".format( 

contents_size.width())) 

log.misc.debug("self._widget.width(): {}".format( 

self._widget.width())) 

log.misc.debug("scrollable_x: {}".format(scrollable_x)) 

log.misc.debug("pos.x(): {}".format(pos.x())) 

raise 

scrollable_y = contents_size.height() - self._widget.height() 

if scrollable_y == 0: 

perc_y = 0 

else: 

perc_y = min(100, round(100 / scrollable_y * pos.y())) 

self._at_bottom = math.ceil(pos.y()) >= scrollable_y 

if (self._pos_perc != (perc_x, perc_y) or 

'no-scroll-filtering' in self._args.debug_flags): 

self._pos_perc = perc_x, perc_y 

self.perc_changed.emit(*self._pos_perc) 

def pos_px(self): 

return self._pos_px 

def pos_perc(self): 

return self._pos_perc 

def to_perc(self, x=None, y=None): 

js_code = javascript.assemble('scroll', 'to_perc', x, y) 

self._tab.run_js_async(js_code) 

def to_point(self, point): 

js_code = javascript.assemble('window', 'scroll', point.x(), point.y()) 

self._tab.run_js_async(js_code) 

def delta(self, x=0, y=0): 

self._tab.run_js_async(javascript.assemble('window', 'scrollBy', x, y)) 

def delta_page(self, x=0, y=0): 

js_code = javascript.assemble('scroll', 'delta_page', x, y) 

self._tab.run_js_async(js_code) 

def up(self, count=1): 

self._repeated_key_press(Qt.Key_Up, count) 

def down(self, count=1): 

self._repeated_key_press(Qt.Key_Down, count) 

def left(self, count=1): 

self._repeated_key_press(Qt.Key_Left, count) 

def right(self, count=1): 

self._repeated_key_press(Qt.Key_Right, count) 

def top(self): 

self._tab.key_press(Qt.Key_Home) 

def bottom(self): 

self._tab.key_press(Qt.Key_End) 

def page_up(self, count=1): 

self._repeated_key_press(Qt.Key_PageUp, count) 

def page_down(self, count=1): 

self._repeated_key_press(Qt.Key_PageDown, count) 

def at_top(self): 

return self.pos_px().y() == 0 

def at_bottom(self): 

return self._at_bottom 

class WebEngineHistory(browsertab.AbstractHistory): 

"""QtWebEngine implementations related to page history.""" 

def current_idx(self): 

return self._history.currentItemIndex() 

def can_go_back(self): 

return self._history.canGoBack() 

def can_go_forward(self): 

return self._history.canGoForward() 

def _item_at(self, i): 

return self._history.itemAt(i) 

def _go_to_item(self, item): 

return self._history.goToItem(item) 

def serialize(self): 

if not qtutils.version_check('5.9', compiled=False): 

# WORKAROUND for 

# https://github.com/qutebrowser/qutebrowser/issues/2289 

# Don't use the history's currentItem here, because of 

# https://bugreports.qt.io/browse/QTBUG-59599 and because it doesn't 

# contain view-source. 

scheme = self._tab.url().scheme() 

if scheme in ['view-source', 'chrome']: 

raise browsertab.WebTabError("Can't serialize special URL!") 

return qtutils.serialize(self._history) 

def deserialize(self, data): 

return qtutils.deserialize(data, self._history) 

def load_items(self, items): 

stream, _data, cur_data = tabhistory.serialize(items) 

qtutils.deserialize_stream(stream, self._history) 

@pyqtSlot() 

def _on_load_finished(): 

self._tab.scroller.to_point(cur_data['scroll-pos']) 

self._tab.load_finished.disconnect(_on_load_finished) 

if cur_data is not None: 

if 'zoom' in cur_data: 

self._tab.zoom.set_factor(cur_data['zoom']) 

if ('scroll-pos' in cur_data and 

self._tab.scroller.pos_px() == QPoint(0, 0)): 

self._tab.load_finished.connect(_on_load_finished) 

class WebEngineZoom(browsertab.AbstractZoom): 

"""QtWebEngine implementations related to zooming.""" 

def _set_factor_internal(self, factor): 

self._widget.setZoomFactor(factor) 

class WebEngineElements(browsertab.AbstractElements): 

"""QtWebEngine implemementations related to elements on the page.""" 

def _js_cb_multiple(self, callback, js_elems): 

"""Handle found elements coming from JS and call the real callback. 

Args: 

callback: The callback to call with the found elements. 

Called with None if there was an error. 

js_elems: The elements serialized from javascript. 

""" 

if js_elems is None: 

callback(None) 

return 

elems = [] 

for js_elem in js_elems: 

elem = webengineelem.WebEngineElement(js_elem, tab=self._tab) 

elems.append(elem) 

callback(elems) 

def _js_cb_single(self, callback, js_elem): 

"""Handle a found focus elem coming from JS and call the real callback. 

Args: 

callback: The callback to call with the found element. 

Called with a WebEngineElement or None. 

js_elem: The element serialized from javascript. 

""" 

debug_str = ('None' if js_elem is None 

else utils.elide(repr(js_elem), 1000)) 

log.webview.debug("Got element from JS: {}".format(debug_str)) 

if js_elem is None: 

callback(None) 

else: 

elem = webengineelem.WebEngineElement(js_elem, tab=self._tab) 

callback(elem) 

def find_css(self, selector, callback, *, only_visible=False): 

js_code = javascript.assemble('webelem', 'find_css', selector, 

only_visible) 

js_cb = functools.partial(self._js_cb_multiple, callback) 

self._tab.run_js_async(js_code, js_cb) 

def find_id(self, elem_id, callback): 

js_code = javascript.assemble('webelem', 'find_id', elem_id) 

js_cb = functools.partial(self._js_cb_single, callback) 

self._tab.run_js_async(js_code, js_cb) 

def find_focused(self, callback): 

js_code = javascript.assemble('webelem', 'find_focused') 

js_cb = functools.partial(self._js_cb_single, callback) 

self._tab.run_js_async(js_code, js_cb) 

def find_at_pos(self, pos, callback): 

assert pos.x() >= 0 

assert pos.y() >= 0 

pos /= self._tab.zoom.factor() 

js_code = javascript.assemble('webelem', 'find_at_pos', 

pos.x(), pos.y()) 

js_cb = functools.partial(self._js_cb_single, callback) 

self._tab.run_js_async(js_code, js_cb) 

class WebEngineTab(browsertab.AbstractTab): 

"""A QtWebEngine tab in the browser. 

Signals: 

_load_finished_fake: 

Used in place of unreliable loadFinished 

""" 

# WORKAROUND for https://bugreports.qt.io/browse/QTBUG-65223 

_load_finished_fake = pyqtSignal(bool) 

def __init__(self, *, win_id, mode_manager, private, parent=None): 

super().__init__(win_id=win_id, mode_manager=mode_manager, 

private=private, parent=parent) 

widget = webview.WebEngineView(tabdata=self.data, win_id=win_id, 

private=private) 

self.history = WebEngineHistory(self) 

self.scroller = WebEngineScroller(self, parent=self) 

self.caret = WebEngineCaret(mode_manager=mode_manager, 

tab=self, parent=self) 

self.zoom = WebEngineZoom(tab=self, parent=self) 

self.search = WebEngineSearch(parent=self) 

self.printing = WebEnginePrinting() 

self.elements = WebEngineElements(tab=self) 

self.action = WebEngineAction(tab=self) 

self._set_widget(widget) 

self._connect_signals() 

self.backend = usertypes.Backend.QtWebEngine 

self._init_js() 

self._child_event_filter = None 

self._saved_zoom = None 

def _init_js(self): 

js_code = '\n'.join([ 

'"use strict";', 

'window._qutebrowser = window._qutebrowser || {};', 

utils.read_file('javascript/scroll.js'), 

utils.read_file('javascript/webelem.js'), 

utils.read_file('javascript/caret.js'), 

]) 

script = QWebEngineScript() 

# We can't use DocumentCreation here as WORKAROUND for 

# https://bugreports.qt.io/browse/QTBUG-66011 

script.setInjectionPoint(QWebEngineScript.DocumentReady) 

script.setSourceCode(js_code) 

page = self._widget.page() 

script.setWorldId(QWebEngineScript.ApplicationWorld) 

# FIXME:qtwebengine what about runsOnSubFrames? 

page.scripts().insert(script) 

def _install_event_filter(self): 

self._widget.focusProxy().installEventFilter(self._mouse_event_filter) 

self._child_event_filter = mouse.ChildEventFilter( 

eventfilter=self._mouse_event_filter, widget=self._widget, 

parent=self) 

self._widget.installEventFilter(self._child_event_filter) 

@pyqtSlot() 

def _restore_zoom(self): 

if sip.isdeleted(self._widget): 

# https://github.com/qutebrowser/qutebrowser/issues/3498 

return 

if self._saved_zoom is None: 

return 

self.zoom.set_factor(self._saved_zoom) 

self._saved_zoom = None 

def openurl(self, url): 

self._saved_zoom = self.zoom.factor() 

self._openurl_prepare(url) 

self._widget.load(url) 

def url(self, requested=False): 

page = self._widget.page() 

if requested: 

return page.requestedUrl() 

else: 

return page.url() 

def dump_async(self, callback, *, plain=False): 

if plain: 

self._widget.page().toPlainText(callback) 

else: 

self._widget.page().toHtml(callback) 

def run_js_async(self, code, callback=None, *, world=None): 

if world is None: 

world_id = QWebEngineScript.ApplicationWorld 

elif isinstance(world, int): 

world_id = world 

else: 

world_id = _JS_WORLD_MAP[world] 

if callback is None: 

self._widget.page().runJavaScript(code, world_id) 

else: 

self._widget.page().runJavaScript(code, world_id, callback) 

def shutdown(self): 

self.shutting_down.emit() 

self.action.exit_fullscreen() 

if qtutils.version_check('5.8', exact=True, compiled=False): 

# WORKAROUND for 

# https://bugreports.qt.io/browse/QTBUG-58563 

self.search.clear() 

self._widget.shutdown() 

def reload(self, *, force=False): 

if force: 

action = QWebEnginePage.ReloadAndBypassCache 

else: 

action = QWebEnginePage.Reload 

self._widget.triggerPageAction(action) 

def stop(self): 

self._widget.stop() 

def title(self): 

return self._widget.title() 

def icon(self): 

return self._widget.icon() 

def set_html(self, html, base_url=QUrl()): 

# FIXME:qtwebengine 

# check this and raise an exception if too big: 

# Warning: The content will be percent encoded before being sent to the 

# renderer via IPC. This may increase its size. The maximum size of the 

# percent encoded content is 2 megabytes minus 30 bytes. 

self._widget.setHtml(html, base_url) 

def networkaccessmanager(self): 

return None 

def user_agent(self): 

return None 

def clear_ssl_errors(self): 

raise browsertab.UnsupportedOperationError 

def key_press(self, key, modifier=Qt.NoModifier): 

press_evt = QKeyEvent(QEvent.KeyPress, key, modifier, 0, 0, 0) 

release_evt = QKeyEvent(QEvent.KeyRelease, key, modifier, 

0, 0, 0) 

self.send_event(press_evt) 

self.send_event(release_evt) 

@pyqtSlot() 

def _on_history_trigger(self): 

try: 

self._widget.page() 

except RuntimeError: 

# Looks like this slot can be triggered on destroyed tabs: 

# https://crashes.qutebrowser.org/view/3abffbed (Qt 5.9.1) 

# wrapped C/C++ object of type WebEngineView has been deleted 

log.misc.debug("Ignoring history trigger for destroyed tab") 

return 

url = self.url() 

requested_url = self.url(requested=True) 

# Don't save the title if it's generated from the URL 

title = self.title() 

title_url = QUrl(url) 

title_url.setScheme('') 

if title == title_url.toDisplayString(QUrl.RemoveScheme).strip('/'): 

title = "" 

# Don't add history entry if the URL is invalid anyways 

if not url.isValid(): 

log.misc.debug("Ignoring invalid URL being added to history") 

return 

self.add_history_item.emit(url, requested_url, title) 

@pyqtSlot(QUrl, 'QAuthenticator*', 'QString') 

def _on_proxy_authentication_required(self, url, authenticator, 

proxy_host): 

"""Called when a proxy needs authentication.""" 

msg = "<b>{}</b> requires a username and password.".format( 

html_utils.escape(proxy_host)) 

urlstr = url.toString(QUrl.RemovePassword | QUrl.FullyEncoded) 

answer = message.ask( 

title="Proxy authentication required", text=msg, 

mode=usertypes.PromptMode.user_pwd, 

abort_on=[self.shutting_down, self.load_started], url=urlstr) 

if answer is not None: 

authenticator.setUser(answer.user) 

authenticator.setPassword(answer.password) 

else: 

try: 

# pylint: disable=no-member, useless-suppression 

sip.assign(authenticator, QAuthenticator()) 

# pylint: enable=no-member, useless-suppression 

except AttributeError: 

url_string = url.toDisplayString() 

error_page = jinja.render( 

'error.html', 

title="Error loading page: {}".format(url_string), 

url=url_string, error="Proxy authentication required", 

icon='') 

self.set_html(error_page) 

@pyqtSlot(QUrl, 'QAuthenticator*') 

def _on_authentication_required(self, url, authenticator): 

netrc_success = False 

if not self.data.netrc_used: 

self.data.netrc_used = True 

netrc_success = shared.netrc_authentication(url, authenticator) 

if not netrc_success: 

abort_on = [self.shutting_down, self.load_started] 

answer = shared.authentication_required(url, authenticator, 

abort_on) 

if not netrc_success and answer is None: 

try: 

# pylint: disable=no-member, useless-suppression 

sip.assign(authenticator, QAuthenticator()) 

# pylint: enable=no-member, useless-suppression 

except AttributeError: 

# WORKAROUND for 

# https://www.riverbankcomputing.com/pipermail/pyqt/2016-December/038400.html 

url_string = url.toDisplayString() 

error_page = jinja.render( 

'error.html', 

title="Error loading page: {}".format(url_string), 

url=url_string, error="Authentication required") 

self.set_html(error_page) 

@pyqtSlot('QWebEngineFullScreenRequest') 

def _on_fullscreen_requested(self, request): 

request.accept() 

on = request.toggleOn() 

self.data.fullscreen = on 

self.fullscreen_requested.emit(on) 

if on: 

notification = miscwidgets.FullscreenNotification(self) 

notification.show() 

notification.set_timeout(3000) 

@pyqtSlot() 

def _on_load_started(self): 

"""Clear search when a new load is started if needed.""" 

if (qtutils.version_check('5.9', compiled=False) and 

not qtutils.version_check('5.9.2', compiled=False)): 

# WORKAROUND for 

# https://bugreports.qt.io/browse/QTBUG-61506 

self.search.clear() 

super()._on_load_started() 

self.data.netrc_used = False 

@pyqtSlot(QWebEnginePage.RenderProcessTerminationStatus, int) 

def _on_render_process_terminated(self, status, exitcode):