# SPDX-FileCopyrightText: Florian Bruhin (The Compiler) # # SPDX-License-Identifier: GPL-3.0-or-later """Wrapper over a WebEngineView.""" import math import struct import functools import dataclasses import re import html as html_utils from typing import cast, Union, Optional from qutebrowser.qt.core import (pyqtSignal, pyqtSlot, Qt, QPoint, QPointF, QTimer, QUrl, QObject, QByteArray) from qutebrowser.qt.network import QAuthenticator from qutebrowser.qt.webenginecore import QWebEnginePage, QWebEngineScript, QWebEngineHistory from qutebrowser.config import config from qutebrowser.browser import browsertab, eventfilter, shared, webelem, greasemonkey from qutebrowser.browser.webengine import (webview, webengineelem, tabhistory, webenginesettings, certificateerror, webengineinspector) from qutebrowser.utils import (usertypes, qtutils, log, javascript, utils, resources, message, jinja, debug, version, urlutils) from qutebrowser.qt import sip, machinery from qutebrowser.misc import objects, miscwidgets # Mapping worlds from usertypes.JsWorld to QWebEngineScript world IDs. _JS_WORLD_MAP = { usertypes.JsWorld.main: QWebEngineScript.ScriptWorldId.MainWorld, usertypes.JsWorld.application: QWebEngineScript.ScriptWorldId.ApplicationWorld, usertypes.JsWorld.user: QWebEngineScript.ScriptWorldId.UserWorld, usertypes.JsWorld.jseval: QWebEngineScript.ScriptWorldId.UserWorld + 1, } class WebEngineAction(browsertab.AbstractAction): """QtWebEngine implementations related to web actions.""" _widget: webview.WebEngineView action_base = QWebEnginePage.WebAction def exit_fullscreen(self): self._widget.triggerPageAction(QWebEnginePage.WebAction.ExitFullScreen) def save_page(self): """Save the current page.""" self._widget.triggerPageAction(QWebEnginePage.WebAction.SavePage) def show_source(self, pygments=False): if pygments: self._show_source_pygments() return self._widget.triggerPageAction(QWebEnginePage.WebAction.ViewSource) class WebEnginePrinting(browsertab.AbstractPrinting): """QtWebEngine implementations related to printing.""" _widget: webview.WebEngineView def connect_signals(self): """Called from WebEngineTab.connect_signals.""" page = self._widget.page() page.pdfPrintingFinished.connect(self.pdf_printing_finished) if machinery.IS_QT6: self._widget.printFinished.connect(self.printing_finished) # Qt 5 uses callbacks instead def check_pdf_support(self): pass def check_preview_support(self): raise browsertab.WebTabError( "Print previews are unsupported with QtWebEngine") def to_pdf(self, path): self._widget.page().printToPdf(str(path)) def to_printer(self, printer): if machinery.IS_QT5: self._widget.page().print(printer, self.printing_finished.emit) else: # Qt 6 self._widget.print(printer) if machinery.IS_QT5: _FindFlagType = Union[QWebEnginePage.FindFlag, QWebEnginePage.FindFlags] else: _FindFlagType = QWebEnginePage.FindFlag @dataclasses.dataclass class _FindFlags: case_sensitive: bool = False backward: bool = False def to_qt(self): """Convert flags into Qt flags.""" flags: _FindFlagType = QWebEnginePage.FindFlag(0) if self.case_sensitive: flags |= QWebEnginePage.FindFlag.FindCaseSensitively if self.backward: flags |= QWebEnginePage.FindFlag.FindBackward return flags def __bool__(self): """Flags are truthy if any flag is set to True.""" return any(dataclasses.astuple(self)) def __str__(self): """List all true flags, in Qt enum style. This needs to be in the same format as QtWebKit, for tests. """ names = { "case_sensitive": "FindCaseSensitively", "backward": "FindBackward", } d = dataclasses.asdict(self) truthy = [names[key] for key, value in d.items() if value] if not truthy: return "" return "|".join(truthy) class WebEngineSearch(browsertab.AbstractSearch): """QtWebEngine implementations related to searching on the page. Attributes: _flags: The FindFlags of the last search. _pending_searches: How many searches have been started but not called back yet. """ _widget: webview.WebEngineView def __init__(self, tab, parent=None): super().__init__(tab, parent) self._flags = _FindFlags() self._pending_searches = 0 self.match = browsertab.SearchMatch() self._old_match = browsertab.SearchMatch() def _store_flags(self, reverse, ignore_case): self._flags.case_sensitive = self._is_case_sensitive(ignore_case) self._flags.backward = reverse def connect_signals(self): """Connect the signals necessary for this class to function.""" self._widget.page().findTextFinished.connect(self._on_find_finished) def _find(self, text, flags, callback, caller): """Call findText on the widget.""" self.search_displayed = True self._pending_searches += 1 def wrapped_callback(cb_arg): """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 if sip.isdeleted(self._widget): # This happens when starting a search, and closing the tab # before results arrive. log.webview.debug("Ignoring finished search for deleted " "widget") return # bool in Qt 5, QWebEngineFindTextResult in Qt 6 # Once we drop Qt 5, we might also want to call callbacks with the # QWebEngineFindTextResult instead of the bool. found = cb_arg if isinstance(cb_arg, bool) else cb_arg.numberOfMatches() > 0 found_text = 'found' if found else "didn't find" if flags: flag_text = f'with flags {flags}' else: flag_text = '' log.webview.debug(' '.join([caller, found_text, text, flag_text]) .strip()) if callback is not None: callback(found) self.finished.emit(found) self._widget.page().findText(text, flags.to_qt(), wrapped_callback) def _on_find_finished(self, find_text_result): """Unwrap the result, store it, and pass it along.""" self._old_match = self.match self.match = browsertab.SearchMatch( current=find_text_result.activeMatch(), total=find_text_result.numberOfMatches(), ) log.webview.debug(f"Active search match: {self.match}") self.match_changed.emit(self.match) def search(self, text, *, ignore_case=usertypes.IgnoreCase.never, reverse=False, result_cb=None): # Don't go to next entry on duplicate search if self.text == text and self.search_displayed: log.webview.debug("Ignoring duplicate search request" " for {}, but resetting flags".format(text)) self._store_flags(reverse, ignore_case) return self.text = text self._store_flags(reverse, ignore_case) self.match.reset() self._find(text, self._flags, result_cb, 'search') def clear(self): if self.search_displayed: self.cleared.emit() self.match_changed.emit(browsertab.SearchMatch()) self.search_displayed = False self.match.reset() self._widget.page().findText('') def _prev_next_cb(self, found, *, going_up, callback): """Call the prev/next callback based on the search result.""" if found: result = browsertab.SearchNavigationResult.found # Check if the match count change is opposite to the search direction if self._old_match.current > 0: if not going_up and self._old_match.current > self.match.current: result = browsertab.SearchNavigationResult.wrapped_bottom elif going_up and self._old_match.current < self.match.current: result = browsertab.SearchNavigationResult.wrapped_top else: result = browsertab.SearchNavigationResult.not_found callback(result) def prev_result(self, *, wrap=False, callback=None): going_up = not self._flags.backward flags = dataclasses.replace(self._flags, backward=going_up) if self.match.at_limit(going_up=going_up) and not wrap: res = ( browsertab.SearchNavigationResult.wrap_prevented_top if going_up else browsertab.SearchNavigationResult.wrap_prevented_bottom ) if callback is not None: callback(res) return cb = functools.partial(self._prev_next_cb, going_up=going_up, callback=callback) self._find(self.text, flags, cb, 'prev_result') def next_result(self, *, wrap=False, callback=None): going_up = self._flags.backward if self.match.at_limit(going_up=going_up) and not wrap: res = ( browsertab.SearchNavigationResult.wrap_prevented_top if going_up else browsertab.SearchNavigationResult.wrap_prevented_bottom ) if callback is not None: callback(res) return cb = functools.partial(self._prev_next_cb, going_up=going_up, callback=callback) self._find(self.text, self._flags, cb, 'next_result') class WebEngineCaret(browsertab.AbstractCaret): """QtWebEngine implementations related to moving the cursor/selection.""" _tab: 'WebEngineTab' def _flags(self): """Get flags to pass to JS.""" flags = set() if utils.is_windows: flags.add('windows') if 'caret' in objects.debug_flags: flags.add('debug') return list(flags) @pyqtSlot(usertypes.KeyMode) def _on_mode_entered(self, mode): if mode != usertypes.KeyMode.caret: return if self._tab.search.search_displayed: # We are currently in search mode. # convert the search to a blue selection so we can operate on it self._tab.search.clear() self._tab.run_js_async( javascript.assemble('caret', 'setFlags', self._flags())) self._js_call('setInitialCursor', callback=self._selection_cb) def _selection_cb(self, enabled): """Emit selection_toggled based on setInitialCursor.""" if self._mode_manager.mode != usertypes.KeyMode.caret: log.webview.debug("Ignoring selection cb due to mode change.") return if enabled is None: log.webview.debug("Ignoring selection status None") return if enabled: self.selection_toggled.emit(browsertab.SelectionState.normal) else: self.selection_toggled.emit(browsertab.SelectionState.none) @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): self._js_call('moveDown', count) def move_to_prev_line(self, count=1): self._js_call('moveUp', count) def move_to_next_char(self, count=1): self._js_call('moveRight', count) def move_to_prev_char(self, count=1): self._js_call('moveLeft', count) def move_to_end_of_word(self, count=1): self._js_call('moveToEndOfWord', count) def move_to_next_word(self, count=1): self._js_call('moveToNextWord', count) def move_to_prev_word(self, count=1): self._js_call('moveToPreviousWord', count) 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): self._js_call('moveToStartOfNextBlock', count) def move_to_start_of_prev_block(self, count=1): self._js_call('moveToStartOfPrevBlock', count) def move_to_end_of_next_block(self, count=1): self._js_call('moveToEndOfNextBlock', count) def move_to_end_of_prev_block(self, count=1): self._js_call('moveToEndOfPrevBlock', count) 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, line=False): self._js_call('toggleSelection', line, callback=self._toggle_sel_translate) 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 # With Qt 6.2-6.5, there still seem to be issues (especially with # multi-line text) self._tab.run_js_async(javascript.assemble('caret', 'getSelection'), callback) def reverse_selection(self): self._js_call('reverseSelection') def _follow_selected_cb_wrapped(self, js_elem, tab): if sip.isdeleted(self): # Sometimes, QtWebEngine JS callbacks seem to be stuck, and will # later get executed when the tab is closed. However, at this point, # the WebEngineCaret is already gone. log.webview.warning( "Got follow_selected callback for deleted WebEngineCaret. " "This is most likely due to a QtWebEngine bug, please report a " "qutebrowser issue if you know a way to reproduce this.") return try: self._follow_selected_cb(js_elem, tab) finally: self.follow_selected_done.emit() def _follow_selected_cb(self, js_elem, tab): """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 if js_elem == "focused": # we had a focused element, not a selected one. Just send self._follow_enter(tab) 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)) try: elem.click(click_type) except webelem.Error as e: message.error(str(e)) 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 self._tab.search.clear() log.webview.debug("Clicking a searched link via fake key press.") # send a fake enter, clicking the orange selection box self._follow_enter(tab) else: # click an existing blue selection js_code = javascript.assemble('webelem', 'find_selected_focused_link') self._tab.run_js_async( js_code, lambda jsret: self._follow_selected_cb_wrapped(jsret, tab)) def _js_call(self, command, *args, callback=None): code = javascript.assemble('caret', command, *args) self._tab.run_js_async(code, callback) def _toggle_sel_translate(self, state_str): if self._mode_manager.mode != usertypes.KeyMode.caret: # This may happen if the user switches to another mode after # `:selection-toggle` is executed and before this callback function # is asynchronously called. log.misc.debug("Ignoring caret selection callback in {}".format( self._mode_manager.mode)) return if state_str is None: message.error("Error toggling caret selection") return state = browsertab.SelectionState[state_str] self.selection_toggled.emit(state) class WebEngineScroller(browsertab.AbstractScroller): """QtWebEngine implementations related to scrolling.""" _widget: webview.WebEngineView def __init__(self, tab, parent=None): super().__init__(tab, parent) 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.KeyboardModifier.NoModifier): """Send count fake key presses to this scroller's WebEngineTab.""" for _ in range(min(count, 1000)): self._tab.fake_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 for perc_x!") 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: try: perc_y = min(100, round(100 / scrollable_y * pos.y())) except ValueError: # https://github.com/qutebrowser/qutebrowser/issues/3219 log.misc.debug("Got ValueError for perc_y!") log.misc.debug("contents_size.height(): {}".format( contents_size.height())) log.misc.debug("self._widget.height(): {}".format( self._widget.height())) log.misc.debug("scrollable_y: {}".format(scrollable_y)) log.misc.debug("pos.y(): {}".format(pos.y())) raise self._at_bottom = math.ceil(pos.y()) >= scrollable_y if (self._pos_perc != (perc_x, perc_y) or 'no-scroll-filtering' in objects.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 to_anchor(self, name): url = self._tab.url() url.setFragment(name) self._tab.load_url(url) 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.Key_Up, count) def down(self, count=1): self._repeated_key_press(Qt.Key.Key_Down, count) def left(self, count=1): self._repeated_key_press(Qt.Key.Key_Left, count) def right(self, count=1): self._repeated_key_press(Qt.Key.Key_Right, count) def top(self): self._tab.fake_key_press(Qt.Key.Key_Home) def bottom(self): self._tab.fake_key_press(Qt.Key.Key_End) def page_up(self, count=1): self._repeated_key_press(Qt.Key.Key_PageUp, count) def page_down(self, count=1): self._repeated_key_press(Qt.Key.Key_PageDown, count) def at_top(self): return self.pos_px().y() == 0 def at_bottom(self): return self._at_bottom class WebEngineHistoryPrivate(browsertab.AbstractHistoryPrivate): """History-related methods which are not part of the extension API.""" def __init__(self, tab: 'WebEngineTab') -> None: self._tab = tab self._history = cast(QWebEngineHistory, None) def _serialize_data(self, stream_version, count, current_index): return struct.pack(">IIi", stream_version, count, current_index) def serialize(self): data = qtutils.serialize(self._history) # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-117489 if data == self._serialize_data(stream_version=4, count=1, current_index=0): fixed = self._serialize_data(stream_version=4, count=0, current_index=-1) return QByteArray(fixed) return data def deserialize(self, data): qtutils.deserialize(data, self._history) def _load_items_workaround(self, items): """WORKAROUND for session loading not working on Qt 5.15. Just load the current URL, see https://github.com/qutebrowser/qutebrowser/issues/5359 """ if not items: return for i, item in enumerate(items): if item.active: cur_idx = i break url = items[cur_idx].url if (url.scheme(), url.host()) == ('qute', 'back') and cur_idx >= 1: url = items[cur_idx - 1].url self._tab.load_url(url) def load_items(self, items): self._load_items_workaround(items) def _load_items_proper(self, items): """Load session items properly. Currently unused, but should be revived. """ if items: self._tab.before_load_started.emit(items[-1].url) 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 WebEngineHistory(browsertab.AbstractHistory): """QtWebEngine implementations related to page history.""" def __init__(self, tab): super().__init__(tab) self.private_api = WebEngineHistoryPrivate(tab) def __len__(self): return len(self._history) def __iter__(self): return iter(self._history.items()) def current_idx(self): return self._history.currentItemIndex() def current_item(self): return self._history.currentItem() 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): self._tab.before_load_started.emit(item.url()) self._history.goToItem(item) def back_items(self): return self._history.backItems(self._history.count()) def forward_items(self): return self._history.forwardItems(self._history.count()) class WebEngineZoom(browsertab.AbstractZoom): """QtWebEngine implementations related to zooming.""" _widget: webview.WebEngineView def _set_factor_internal(self, factor): self._widget.setZoomFactor(factor) class WebEngineElements(browsertab.AbstractElements): """QtWebEngine implementations related to elements on the page.""" _tab: 'WebEngineTab' def _js_cb_multiple(self, callback, error_cb, js_elems): """Handle found elements coming from JS and call the real callback. Args: callback: The callback to call with the found elements. error_cb: The callback to call in case of an error. js_elems: The elements serialized from javascript. """ if js_elems is None: error_cb(webelem.Error("Unknown error while getting " "elements")) return elif not js_elems['success']: error_cb(webelem.Error(js_elems['error'])) return elems = [] for js_elem in js_elems['result']: 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, error_cb, *, only_visible=False): js_code = javascript.assemble('webelem', 'find_css', selector, only_visible) js_cb = functools.partial(self._js_cb_multiple, callback, error_cb) 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, pos assert pos.y() >= 0, pos 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 WebEngineAudio(browsertab.AbstractAudio): """QtWebEngine implementations related to audio/muting. Attributes: _overridden: Whether the user toggled muting manually. If that's the case, we leave it alone. """ _widget: webview.WebEngineView def __init__(self, tab, parent=None): super().__init__(tab, parent) self._overridden = False # Implements the intended two-second delay specified at # https://doc.qt.io/archives/qt-5.14/qwebenginepage.html#recentlyAudibleChanged delay_ms = 2000 self._silence_timer = QTimer(self) self._silence_timer.setSingleShot(True) self._silence_timer.setInterval(delay_ms) def _connect_signals(self): page = self._widget.page() page.audioMutedChanged.connect(self.muted_changed) page.recentlyAudibleChanged.connect(self._delayed_recently_audible_changed) self._tab.url_changed.connect(self._on_url_changed) config.instance.changed.connect(self._on_config_changed) self._silence_timer.timeout.connect(functools.partial( self.recently_audible_changed.emit, False)) # WORKAROUND for recentlyAudibleChanged being emitted without delay from the moment # that audio is dropped. def _delayed_recently_audible_changed(self, recently_audible): timer = self._silence_timer # Stop any active timer and immediately display [A] if tab is audible, # otherwise start a timer to update audio field if recently_audible: if timer.isActive(): timer.stop() self.recently_audible_changed.emit(recently_audible) else: # Ignore all subsequent calls while the tab is muted with an active timer if timer.isActive(): return timer.start() def set_muted(self, muted: bool, override: bool = False) -> None: self._overridden = override assert self._widget is not None page = self._widget.page() page.setAudioMuted(muted) def is_muted(self): page = self._widget.page() return page.isAudioMuted() def is_recently_audible(self): page = self._widget.page() return page.recentlyAudible() @pyqtSlot(QUrl) def _on_url_changed(self, url): if self._overridden or not url.isValid(): return mute = config.instance.get('content.mute', url=url) self.set_muted(mute) @config.change_filter('content.mute') def _on_config_changed(self): self._on_url_changed(self._tab.url()) class _WebEnginePermissions(QObject): """Handling of various permission-related signals.""" _widget: webview.WebEngineView _options = { QWebEnginePage.Feature.Notifications: 'content.notifications.enabled', QWebEnginePage.Feature.Geolocation: 'content.geolocation', QWebEnginePage.Feature.MediaAudioCapture: 'content.media.audio_capture', QWebEnginePage.Feature.MediaVideoCapture: 'content.media.video_capture', QWebEnginePage.Feature.MediaAudioVideoCapture: 'content.media.audio_video_capture', QWebEnginePage.Feature.MouseLock: 'content.mouse_lock', QWebEnginePage.Feature.DesktopVideoCapture: 'content.desktop_capture', QWebEnginePage.Feature.DesktopAudioVideoCapture: 'content.desktop_capture', } _messages = { QWebEnginePage.Feature.Notifications: 'show notifications', QWebEnginePage.Feature.Geolocation: 'access your location', QWebEnginePage.Feature.MediaAudioCapture: 'record audio', QWebEnginePage.Feature.MediaVideoCapture: 'record video', QWebEnginePage.Feature.MediaAudioVideoCapture: 'record audio/video', QWebEnginePage.Feature.MouseLock: 'hide your mouse pointer', QWebEnginePage.Feature.DesktopVideoCapture: 'capture your desktop', QWebEnginePage.Feature.DesktopAudioVideoCapture: 'capture your desktop and audio', } def __init__(self, tab, parent=None): super().__init__(parent) self._tab = tab self._widget = cast(webview.WebEngineView, None) assert self._options.keys() == self._messages.keys() def connect_signals(self): """Connect related signals from the QWebEnginePage.""" page = self._widget.page() page.fullScreenRequested.connect( self._on_fullscreen_requested) page.featurePermissionRequested.connect( self._on_feature_permission_requested) page.quotaRequested.connect(self._on_quota_requested) page.registerProtocolHandlerRequested.connect( self._on_register_protocol_handler_requested) @pyqtSlot('QWebEngineFullScreenRequest') def _on_fullscreen_requested(self, request): request.accept() on = request.toggleOn() self._tab.data.fullscreen = on self._tab.fullscreen_requested.emit(on) if on: timeout = config.val.content.fullscreen.overlay_timeout if timeout != 0: notif = miscwidgets.FullscreenNotification(self._widget) notif.set_timeout(timeout) notif.show() @pyqtSlot(QUrl, 'QWebEnginePage::Feature') def _on_feature_permission_requested(self, url, feature): """Ask the user for approval for geolocation/media/etc..""" page = self._widget.page() grant_permission = functools.partial( page.setFeaturePermission, url, feature, QWebEnginePage.PermissionPolicy.PermissionGrantedByUser) deny_permission = functools.partial( page.setFeaturePermission, url, feature, QWebEnginePage.PermissionPolicy.PermissionDeniedByUser) permission_str = debug.qenum_key(QWebEnginePage, feature) if not url.isValid(): log.webview.warning("Ignoring feature permission {} for invalid URL {}".format( permission_str, url)) deny_permission() return if feature not in self._options: log.webview.error("Unhandled feature permission {}".format( permission_str)) deny_permission() return question = shared.feature_permission( url=url.adjusted(QUrl.UrlFormattingOption.RemovePath), option=self._options[feature], msg=self._messages[feature], yes_action=grant_permission, no_action=deny_permission, abort_on=[self._tab.abort_questions]) if question is not None: page.featurePermissionRequestCanceled.connect( functools.partial(self._on_feature_permission_cancelled, question, url, feature)) def _on_feature_permission_cancelled(self, question, url, feature, cancelled_url, cancelled_feature): """Slot invoked when a feature permission request was cancelled. To be used with functools.partial. """ if url == cancelled_url and feature == cancelled_feature: try: question.abort() except RuntimeError: # The question could already be deleted, e.g. because it was # aborted after a loadStarted signal. pass def _on_quota_requested(self, request): size = utils.format_size(request.requestedSize()) shared.feature_permission( url=request.origin().adjusted(QUrl.UrlFormattingOption.RemovePath), option='content.persistent_storage', msg='use {} of persistent storage'.format(size), yes_action=request.accept, no_action=request.reject, abort_on=[self._tab.abort_questions], blocking=True) def _on_register_protocol_handler_requested(self, request): shared.feature_permission( url=request.origin().adjusted(QUrl.UrlFormattingOption.RemovePath), option='content.register_protocol_handler', msg='open all {} links'.format(request.scheme()), yes_action=request.accept, no_action=request.reject, abort_on=[self._tab.abort_questions], blocking=True) @dataclasses.dataclass class _Quirk: filename: str injection_point: QWebEngineScript.InjectionPoint = ( QWebEngineScript.InjectionPoint.DocumentCreation) world: QWebEngineScript.ScriptWorldId = QWebEngineScript.ScriptWorldId.MainWorld predicate: bool = True name: Optional[str] = None def __post_init__(self): if self.name is None: self.name = f"js-{self.filename.replace('_', '-')}" class _WebEngineScripts(QObject): _widget: webview.WebEngineView def __init__(self, tab, parent=None): super().__init__(parent) self._tab = tab self._widget = cast(webview.WebEngineView, None) self._greasemonkey = greasemonkey.gm_manager def connect_signals(self): """Connect signals to our private slots.""" config.instance.changed.connect(self._on_config_changed) self._tab.search.cleared.connect(functools.partial( self._update_stylesheet, searching=False)) self._tab.search.finished.connect(self._update_stylesheet) @pyqtSlot(str) def _on_config_changed(self, option): if option in ['scrolling.bar', 'content.user_stylesheets']: self._init_stylesheet() self._update_stylesheet() @pyqtSlot(bool) def _update_stylesheet(self, searching=False): """Update the custom stylesheet in existing tabs.""" css = shared.get_user_stylesheet(searching=searching) code = javascript.assemble('stylesheet', 'set_css', css) self._tab.run_js_async(code) def _inject_js(self, name, js_code, *, world=QWebEngineScript.ScriptWorldId.ApplicationWorld, injection_point=QWebEngineScript.InjectionPoint.DocumentCreation, subframes=False): """Inject the given script to run early on a page load.""" script = QWebEngineScript() script.setInjectionPoint(injection_point) script.setSourceCode(js_code) script.setWorldId(world) script.setRunsOnSubFrames(subframes) script.setName(f'_qute_{name}') self._widget.page().scripts().insert(script) def _remove_js(self, name): """Remove an early QWebEngineScript.""" scripts = self._widget.page().scripts() if machinery.IS_QT6: for script in scripts.find(f'_qute_{name}'): scripts.remove(script) else: # Qt 5 script = scripts.findScript(f'_qute_{name}') if not script.isNull(): scripts.remove(script) def init(self): """Initialize global qutebrowser JavaScript.""" js_code = javascript.wrap_global( 'scripts', resources.read_file('javascript/scroll.js'), resources.read_file('javascript/webelem.js'), resources.read_file('javascript/caret.js'), ) # FIXME:qtwebengine what about subframes=True? self._inject_js('js', js_code, subframes=True) self._init_stylesheet() self._greasemonkey.scripts_reloaded.connect( self._inject_all_greasemonkey_scripts) self._inject_all_greasemonkey_scripts() self._inject_site_specific_quirks() def _init_stylesheet(self): """Initialize custom stylesheets. Partially inspired by QupZilla: https://github.com/QupZilla/qupzilla/blob/v2.0/src/lib/app/mainapplication.cpp#L1063-L1101 """ self._remove_js('stylesheet') css = shared.get_user_stylesheet() js_code = javascript.wrap_global( 'stylesheet', resources.read_file('javascript/stylesheet.js'), javascript.assemble('stylesheet', 'set_css', css), ) self._inject_js('stylesheet', js_code, subframes=True) @pyqtSlot() def _inject_all_greasemonkey_scripts(self): scripts = self._greasemonkey.all_scripts() self._inject_greasemonkey_scripts(scripts) def _remove_all_greasemonkey_scripts(self): page_scripts = self._widget.page().scripts() for script in page_scripts.toList(): if script.name().startswith("GM-"): log.greasemonkey.debug('Removing script: {}' .format(script.name())) removed = page_scripts.remove(script) assert removed, script.name() def _inject_greasemonkey_scripts(self, scripts): """Register user JavaScript files with the current tab. Args: scripts: A list of GreasemonkeyScripts. """ if sip.isdeleted(self._widget): return # Since we are inserting scripts into a per-tab collection, # rather than just injecting scripts on page load, we need to # make sure we replace existing scripts, not just add new ones. # While, taking care not to remove any other scripts that might # have been added elsewhere, like the one for stylesheets. page_scripts = self._widget.page().scripts() self._remove_all_greasemonkey_scripts() seen_names = set() for script in scripts: while script.full_name() in seen_names: script.dedup_suffix += 1 seen_names.add(script.full_name()) new_script = QWebEngineScript() try: world = int(script.jsworld) if not 0 <= world <= qtutils.MAX_WORLD_ID: log.greasemonkey.error( f"script {script.name} has invalid value for '@qute-js-world'" f": {script.jsworld}, should be between 0 and " f"{qtutils.MAX_WORLD_ID}") continue except ValueError: try: world = _JS_WORLD_MAP[usertypes.JsWorld[script.jsworld.lower()]] except KeyError: log.greasemonkey.error( f"script {script.name} has invalid value for '@qute-js-world'" f": {script.jsworld}") continue new_script.setWorldId(world) # Corresponds to "@run-at document-end" which is the default according to # https://wiki.greasespot.net/Metadata_Block#.40run-at - however, # QtWebEngine uses QWebEngineScript.InjectionPoint.Deferred (@run-at document-idle) as # default. # # NOTE that this needs to be done before setSourceCode, so that # QtWebEngine's parsing of GreaseMonkey tags will override it if there is a # @run-at comment. new_script.setInjectionPoint(QWebEngineScript.InjectionPoint.DocumentReady) new_script.setSourceCode(script.code()) new_script.setName(script.full_name()) new_script.setRunsOnSubFrames(script.runs_on_sub_frames) if script.needs_document_end_workaround(): log.greasemonkey.debug( f"Forcing @run-at document-end for {script.name}") new_script.setInjectionPoint(QWebEngineScript.InjectionPoint.DocumentReady) log.greasemonkey.debug(f'adding script: {new_script.name()}') page_scripts.insert(new_script) def _get_quirks(self): """Get a list of all available JS quirks.""" versions = version.qtwebengine_versions() return [ # FIXME:qt6 Double check which of those are still required _Quirk( 'whatsapp_web', injection_point=QWebEngineScript.InjectionPoint.DocumentReady, world=QWebEngineScript.ScriptWorldId.ApplicationWorld, ), _Quirk('discord'), _Quirk( 'googledocs', # will be an UA quirk once we set the JS UA as well name='ua-googledocs', ), _Quirk( 'string_replaceall', predicate=versions.webengine < utils.VersionNumber(5, 15, 3), ), _Quirk( 'array_at', predicate=versions.webengine < utils.VersionNumber(6, 3), ), ] def _inject_site_specific_quirks(self): """Add site-specific quirk scripts.""" if not config.val.content.site_specific_quirks.enabled: return for quirk in self._get_quirks(): if not quirk.predicate: continue src = resources.read_file(f'javascript/quirks/{quirk.filename}.user.js') if quirk.name not in config.val.content.site_specific_quirks.skip: self._inject_js( f'quirk_{quirk.filename}', src, world=quirk.world, injection_point=quirk.injection_point, ) class WebEngineTabPrivate(browsertab.AbstractTabPrivate): """QtWebEngine-related methods which aren't part of the public API.""" _widget: webview.WebEngineView def networkaccessmanager(self): return None def user_agent(self): return None def clear_ssl_errors(self): raise browsertab.UnsupportedOperationError def event_target(self): return self._widget.render_widget() def shutdown(self): self._tab.shutting_down.emit() self._tab.action.exit_fullscreen() self._widget.shutdown() def run_js_sync(self, code): raise browsertab.UnsupportedOperationError def _init_inspector(self, splitter, win_id, parent=None): return webengineinspector.WebEngineInspector(splitter, win_id, parent) class WebEngineTab(browsertab.AbstractTab): """A QtWebEngine tab in the browser. Signals: abort_questions: Emitted when a new load started or we're shutting down. """ abort_questions = pyqtSignal() _widget: webview.WebEngineView search: WebEngineSearch audio: WebEngineAudio printing: WebEnginePrinting 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(tab=self) self.scroller = WebEngineScroller(tab=self, parent=self) self.caret = WebEngineCaret(mode_manager=mode_manager, tab=self, parent=self) self.zoom = WebEngineZoom(tab=self, parent=self) self.search = WebEngineSearch(tab=self, parent=self) self.printing = WebEnginePrinting(tab=self, parent=self) self.elements = WebEngineElements(tab=self) self.action = WebEngineAction(tab=self) self.audio = WebEngineAudio(tab=self, parent=self) self.private_api = WebEngineTabPrivate(mode_manager=mode_manager, tab=self) self._permissions = _WebEnginePermissions(tab=self, parent=self) self._scripts = _WebEngineScripts(tab=self, parent=self) # We're assigning settings in _set_widget self.settings = webenginesettings.WebEngineSettings(settings=None) self._set_widget(widget) self._connect_signals() self.backend = usertypes.Backend.QtWebEngine self._child_event_filter = None self._saved_zoom = None self._scripts.init() # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-65223 self._needs_qtbug65223_workaround = ( version.qtwebengine_versions().webengine < utils.VersionNumber(5, 15, 5)) def _set_widget(self, widget): # pylint: disable=protected-access super()._set_widget(widget) self._permissions._widget = widget self._scripts._widget = widget def _install_event_filter(self): fp = self._widget.focusProxy() if fp is not None: fp.installEventFilter(self._tab_event_filter) self._child_event_filter = eventfilter.ChildEventFilter( eventfilter=self._tab_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 load_url(self, url): """Load the given URL in this tab. Arguments: url: The QUrl to load. """ if sip.isdeleted(self._widget): # https://github.com/qutebrowser/qutebrowser/issues/3896 return self._saved_zoom = self.zoom.factor() self._load_url_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): world_id_type = Union[QWebEngineScript.ScriptWorldId, int] if world is None: world_id: world_id_type = QWebEngineScript.ScriptWorldId.ApplicationWorld elif isinstance(world, int): world_id = world if not 0 <= world_id <= qtutils.MAX_WORLD_ID: raise browsertab.WebTabError( "World ID should be between 0 and {}" .format(qtutils.MAX_WORLD_ID)) 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 reload(self, *, force=False): if force: action = QWebEnginePage.WebAction.ReloadAndBypassCache else: action = QWebEnginePage.WebAction.Reload self._widget.triggerPageAction(action) def stop(self): self._widget.stop() def title(self): return self._widget.title() def renderer_process_pid(self) -> int: page = self._widget.page() return page.renderProcessPid() 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 _show_error_page(self, url, error): """Show an error page in the tab.""" log.misc.debug("Showing error page for {}".format(error)) url_string = url.toDisplayString() error_page = jinja.render( 'error.html', title="Error loading page: {}".format(url_string), url=url_string, error=error) self.set_html(error_page) @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('') title_url_str = title_url.toDisplayString(urlutils.FormatOption.REMOVE_SCHEME) if title == title_url_str.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.history_item_triggered.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 = "{} requires a username and password.".format( html_utils.escape(proxy_host)) urlstr = url.toString(QUrl.UrlFormattingOption.RemovePassword | QUrl.ComponentFormattingOption.FullyEncoded) answer = message.ask( title="Proxy authentication required", text=msg, mode=usertypes.PromptMode.user_pwd, abort_on=[self.abort_questions], url=urlstr) if answer is None: sip.assign(authenticator, QAuthenticator()) return authenticator.setUser(answer.user) authenticator.setPassword(answer.password) @pyqtSlot(QUrl, 'QAuthenticator*') def _on_authentication_required(self, url, authenticator): log.network.debug("Authentication requested for {}, netrc_used {}" .format(url.toDisplayString(), self.data.netrc_used)) 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: log.network.debug("Asking for credentials") answer = shared.authentication_required( url, authenticator, abort_on=[self.abort_questions]) if not netrc_success and answer is None: log.network.debug("Aborting auth") sip.assign(authenticator, QAuthenticator()) @pyqtSlot() def _on_load_started(self): """Clear search when a new load is started if needed.""" # WORKAROUND for # https://bugreports.qt.io/browse/QTBUG-61506 # (seems to be back in later Qt versions as well) self.search.clear() super()._on_load_started() self.data.netrc_used = False @pyqtSlot('qint64') def _on_renderer_process_pid_changed(self, pid): log.webview.debug("Renderer process PID for tab {}: {}" .format(self.tab_id, pid)) @pyqtSlot(QWebEnginePage.RenderProcessTerminationStatus, int) def _on_render_process_terminated(self, status, exitcode): """Show an error when the renderer process terminated.""" if (status == QWebEnginePage.RenderProcessTerminationStatus.AbnormalTerminationStatus and exitcode == 256): # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-58697 status = QWebEnginePage.RenderProcessTerminationStatus.CrashedTerminationStatus status_map = { QWebEnginePage.RenderProcessTerminationStatus.NormalTerminationStatus: browsertab.TerminationStatus.normal, QWebEnginePage.RenderProcessTerminationStatus.AbnormalTerminationStatus: browsertab.TerminationStatus.abnormal, QWebEnginePage.RenderProcessTerminationStatus.CrashedTerminationStatus: browsertab.TerminationStatus.crashed, QWebEnginePage.RenderProcessTerminationStatus.KilledTerminationStatus: browsertab.TerminationStatus.killed, -1: browsertab.TerminationStatus.unknown, } self.renderer_process_terminated.emit(status_map[status], exitcode) def _error_page_workaround(self, js_enabled, html): """Check if we're displaying a Chromium error page. This gets called if we got a loadFinished(False), so we can display at least some error page in situations where Chromium's can't be displayed. WORKAROUND for https://bugreports.qt.io/browse/QTBUG-66643 """ match = re.search(r'"errorCode":"([^"]*)"', html) if match is None: return error = match.group(1) log.webview.error("Load error: {}".format(error)) if js_enabled: return self._show_error_page(self.url(), error=error) @pyqtSlot(int) def _on_load_progress(self, perc: int) -> None: """QtWebEngine-specific loadProgress workarounds.""" super()._on_load_progress(perc) if ( self._needs_qtbug65223_workaround and perc == 100 and self.load_status() != usertypes.LoadStatus.error ): self._update_load_status(ok=True) @pyqtSlot(bool) def _on_load_finished(self, ok: bool) -> None: """QtWebEngine-specific loadFinished code.""" super()._on_load_finished(ok) if not self._needs_qtbug65223_workaround or not ok: # With the workaround, this should only run with ok=False self._update_load_status(ok) if not ok: self.dump_async(functools.partial( self._error_page_workaround, self.settings.test_attribute('content.javascript.enabled'))) @pyqtSlot(certificateerror.CertificateErrorWrapper) def _on_ssl_errors(self, error): url = error.url() self._insecure_hosts.add(url.host()) # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-92009 # self.url() is not available yet and the requested URL might not match the URL # we get from the error - so we just apply a heuristic here. assert self.data.last_navigation is not None first_party_url = self.data.last_navigation.url log.network.debug("Certificate error: {}".format(error)) log.network.debug("First party URL: {}".format(first_party_url)) if error.is_overridable(): shared.handle_certificate_error( request_url=url, first_party_url=first_party_url, error=error, abort_on=[self.abort_questions], ) else: log.network.error("Non-overridable certificate error: " "{}".format(error)) log.network.debug("ignore {}, URL {}, requested {}".format( error.ignore, url, self.url(requested=True))) @pyqtSlot() def _on_print_requested(self): """Slot for window.print() in JS.""" try: self.printing.show_dialog() except browsertab.WebTabError as e: message.error(str(e)) @pyqtSlot(usertypes.NavigationRequest) def _on_navigation_request(self, navigation): super()._on_navigation_request(navigation) local_schemes = {"qute", "file"} qtwe_ver = version.qtwebengine_versions().webengine if ( navigation.accepted and self.url().scheme().lower() in local_schemes and navigation.url.scheme().lower() not in local_schemes and (navigation.navigation_type == usertypes.NavigationRequest.Type.link_clicked) and navigation.is_main_frame and (utils.VersionNumber(6, 2) <= qtwe_ver < utils.VersionNumber(6, 2, 5) or utils.VersionNumber(6, 3) <= qtwe_ver < utils.VersionNumber(6, 3, 1)) ): # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-103778 log.webview.debug( "Working around blocked request from local page " f"{self.url().toDisplayString()}" ) navigation.accepted = False self.load_url(navigation.url) if not navigation.accepted or not navigation.is_main_frame: return self.settings.update_for_url(navigation.url) def _on_select_client_certificate(self, selection): """Handle client certificates. Currently, we simply pick the first available certificate and show an additional note if there are multiple matches. """ certificate = selection.certificates()[0] text = ('Subject: {subj}
' 'Issuer: {issuer}
' 'Serial: {serial}'.format( subj=html_utils.escape(certificate.subjectDisplayName()), issuer=html_utils.escape(certificate.issuerDisplayName()), serial=bytes(certificate.serialNumber()).decode('ascii'))) if len(selection.certificates()) > 1: text += ('

Note: Multiple matching certificates ' 'were found, but certificate selection is not ' 'implemented yet!') urlstr = selection.host().host() present = message.ask( title='Present client certificate to {}?'.format(urlstr), text=text, mode=usertypes.PromptMode.yesno, abort_on=[self.abort_questions], url=urlstr) if present: selection.select(certificate) else: selection.selectNone() def _connect_signals(self): view = self._widget page = view.page() assert isinstance(page, webview.WebEnginePage), 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.contentsSizeChanged.connect(self.contents_size_changed) page.navigation_request.connect(self._on_navigation_request) page.printRequested.connect(self._on_print_requested) page.selectClientCertificate.connect(self._on_select_client_certificate) 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) page.loadFinished.connect(self._on_history_trigger) page.loadFinished.connect(self._restore_zoom) page.loadFinished.connect(self._on_load_finished) page.renderProcessPidChanged.connect(self._on_renderer_process_pid_changed) self.shutting_down.connect(self.abort_questions) self.load_started.connect(self.abort_questions) # pylint: disable=protected-access self.audio._connect_signals() self.search.connect_signals() self.printing.connect_signals() self._permissions.connect_signals() self._scripts.connect_signals()