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eb888cc8d7
qutebrowser/qutebrowser/browser/webengine/webenginetab.py
Marc Jauvin eb888cc8d7 fix latest change requests
2018-01-25 13:35:23 -05:00

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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2016-2017 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, QTimer)
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
url_str = self._tab.url().toString(QUrl.RemoveUserInfo)
new_url = QUrl('view-source:' + url_str)
tb = objreg.get('tabbed-browser', scope='window',
window=self._win_id)
tb.tabopen(new_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):
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 has_selection(self):
if qtutils.version_check('5.10'):
return self._widget.hasSelection()
else:
# WORKAROUND for
# https://bugreports.qt.io/browse/QTBUG-53134
return True
def selection(self, html=False, callback=None):
if html:
raise browsertab.UnsupportedOperationError
if qtutils.version_check('5.10'):
callback(self._widget.selectedText())
else:
# WORKAROUND for
# https://bugreports.qt.io/browse/QTBUG-53134
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)
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)):
QTimer.singleShot(0, functools.partial(
self._tab.scroller.to_point, cur_data['scroll-pos']))
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(win_id=win_id, mode_manager=mode_manager,
tab=self, parent=self)
self.zoom = WebEngineZoom(win_id=win_id, parent=self)
self.search = WebEngineSearch(parent=self)
self.printing = WebEnginePrinting()
self.elements = WebEngineElements(self)
self.action = WebEngineAction(self, win_id)
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()
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))
answer = message.ask(
title="Proxy authentication required", text=msg,
mode=usertypes.PromptMode.user_pwd,
abort_on=[self.shutting_down, self.load_started])
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):
# FIXME:qtwebengine support .netrc
answer = shared.authentication_required(
url, authenticator, abort_on=[self.shutting_down,
self.load_started])
if 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()
@pyqtSlot(QWebEnginePage.RenderProcessTerminationStatus, int)
def _on_render_process_terminated(self, status, exitcode):
"""Show an error when the renderer process terminated."""
if (status == QWebEnginePage.AbnormalTerminationStatus and
exitcode == 256):
# WORKAROUND for https://bugreports.qt.io/browse/QTBUG-58697
status = QWebEnginePage.CrashedTerminationStatus
status_map = {
QWebEnginePage.NormalTerminationStatus:
browsertab.TerminationStatus.normal,
QWebEnginePage.AbnormalTerminationStatus:
browsertab.TerminationStatus.abnormal,
QWebEnginePage.CrashedTerminationStatus:
browsertab.TerminationStatus.crashed,
QWebEnginePage.KilledTerminationStatus:
browsertab.TerminationStatus.killed,
-1:
browsertab.TerminationStatus.unknown,
}
self.renderer_process_terminated.emit(status_map[status], exitcode)
@pyqtSlot(int)
def _on_load_progress_workaround(self, perc):
"""Use loadProgress(100) to emit loadFinished(True).
See https://bugreports.qt.io/browse/QTBUG-65223
"""
if perc == 100 and self.load_status() != usertypes.LoadStatus.error:
self._load_finished_fake.emit(True)
@pyqtSlot(bool)
def _on_load_finished_workaround(self, ok):
"""Use only loadFinished(False).
See https://bugreports.qt.io/browse/QTBUG-65223
"""
if not ok:
self._load_finished_fake.emit(False)
def _connect_signals(self):
view = self._widget
page = view.page()
page.windowCloseRequested.connect(self.window_close_requested)
page.linkHovered.connect(self.link_hovered)
page.loadProgress.connect(self._on_load_progress)
page.loadStarted.connect(self._on_load_started)
page.certificate_error.connect(self._on_ssl_errors)
page.authenticationRequired.connect(self._on_authentication_required)
page.proxyAuthenticationRequired.connect(
self._on_proxy_authentication_required)
page.fullScreenRequested.connect(self._on_fullscreen_requested)
page.contentsSizeChanged.connect(self.contents_size_changed)
view.titleChanged.connect(self.title_changed)
view.urlChanged.connect(self._on_url_changed)
view.renderProcessTerminated.connect(
self._on_render_process_terminated)
view.iconChanged.connect(self.icon_changed)
# WORKAROUND for https://bugreports.qt.io/browse/QTBUG-65223
if qtutils.version_check('5.10', compiled=False):
page.loadProgress.connect(self._on_load_progress_workaround)
self._load_finished_fake.connect(self._on_history_trigger)
self._load_finished_fake.connect(self._restore_zoom)
self._load_finished_fake.connect(self._on_load_finished)
page.loadFinished.connect(self._on_load_finished_workaround)
else:
# for older Qt versions which break with the above
page.loadProgress.connect(self._on_load_progress)
page.loadFinished.connect(self._on_history_trigger)
page.loadFinished.connect(self._restore_zoom)
page.loadFinished.connect(self._on_load_finished)
def event_target(self):
return self._widget.focusProxy()
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