725 lines
22 KiB
Python
725 lines
22 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
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# Copyright 2016 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
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#
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# This file is part of qutebrowser.
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#
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# qutebrowser is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# qutebrowser is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
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"""Base class for a wrapper over QWebView/QWebEngineView."""
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import itertools
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from PyQt5.QtCore import pyqtSignal, pyqtSlot, QUrl, QObject, QSizeF
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from PyQt5.QtGui import QIcon
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from PyQt5.QtWidgets import QWidget, QApplication
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from qutebrowser.keyinput import modeman
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from qutebrowser.config import config
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from qutebrowser.utils import (utils, objreg, usertypes, message, log, qtutils,
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urlutils)
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from qutebrowser.misc import miscwidgets
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from qutebrowser.browser import mouse, hints
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tab_id_gen = itertools.count(0)
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def create(win_id, parent=None):
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"""Get a QtWebKit/QtWebEngine tab object.
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Args:
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win_id: The window ID where the tab will be shown.
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parent: The Qt parent to set.
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"""
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# Importing modules here so we don't depend on QtWebEngine without the
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# argument and to avoid circular imports.
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mode_manager = modeman.instance(win_id)
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if objreg.get('args').backend == 'webengine':
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from qutebrowser.browser.webengine import webenginetab
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tab_class = webenginetab.WebEngineTab
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else:
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from qutebrowser.browser.webkit import webkittab
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tab_class = webkittab.WebKitTab
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return tab_class(win_id=win_id, mode_manager=mode_manager, parent=parent)
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class WebTabError(Exception):
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"""Base class for various errors."""
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class TabData:
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"""A simple namespace with a fixed set of attributes.
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Attributes:
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keep_icon: Whether the (e.g. cloned) icon should not be cleared on page
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load.
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inspector: The QWebInspector used for this webview.
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viewing_source: Set if we're currently showing a source view.
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open_target: How the next clicked link should be opened.
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override_target: Override for open_target for fake clicks (like hints).
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"""
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def __init__(self):
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self.keep_icon = False
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self.viewing_source = False
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self.inspector = None
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self.open_target = usertypes.ClickTarget.normal
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self.override_target = None
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def combined_target(self):
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if self.override_target is not None:
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return self.override_target
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else:
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return self.open_target
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class AbstractPrinting:
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"""Attribute of AbstractTab for printing the page."""
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def __init__(self):
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self._widget = None
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def check_pdf_support(self):
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raise NotImplementedError
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def check_printer_support(self):
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raise NotImplementedError
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def to_pdf(self, filename):
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raise NotImplementedError
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def to_printer(self, printer):
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raise NotImplementedError
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class AbstractSearch(QObject):
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"""Attribute of AbstractTab for doing searches.
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Attributes:
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text: The last thing this view was searched for.
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_flags: The flags of the last search (needs to be set by subclasses).
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_widget: The underlying WebView widget.
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"""
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def __init__(self, parent=None):
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super().__init__(parent)
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self._widget = None
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self.text = None
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def search(self, text, *, ignore_case=False, reverse=False,
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result_cb=None):
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"""Find the given text on the page.
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Args:
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text: The text to search for.
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ignore_case: Search case-insensitively. (True/False/'smart')
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reverse: Reverse search direction.
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result_cb: Called with a bool indicating whether a match was found.
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"""
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raise NotImplementedError
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def clear(self):
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"""Clear the current search."""
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raise NotImplementedError
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def prev_result(self, *, result_cb=None):
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"""Go to the previous result of the current search.
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Args:
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result_cb: Called with a bool indicating whether a match was found.
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"""
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raise NotImplementedError
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def next_result(self, *, result_cb=None):
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"""Go to the next result of the current search.
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Args:
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result_cb: Called with a bool indicating whether a match was found.
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"""
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raise NotImplementedError
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class AbstractZoom(QObject):
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"""Attribute of AbstractTab for controlling zoom.
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Attributes:
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_neighborlist: A NeighborList with the zoom levels.
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_default_zoom_changed: Whether the zoom was changed from the default.
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"""
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def __init__(self, win_id, parent=None):
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super().__init__(parent)
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self._widget = None
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self._win_id = win_id
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self._default_zoom_changed = False
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self._init_neighborlist()
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objreg.get('config').changed.connect(self._on_config_changed)
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# # FIXME:qtwebengine is this needed?
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# # For some reason, this signal doesn't get disconnected automatically
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# # when the WebView is destroyed on older PyQt versions.
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# # See https://github.com/The-Compiler/qutebrowser/issues/390
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# self.destroyed.connect(functools.partial(
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# cfg.changed.disconnect, self.init_neighborlist))
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@pyqtSlot(str, str)
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def _on_config_changed(self, section, option):
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if section == 'ui' and option in ['zoom-levels', 'default-zoom']:
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if not self._default_zoom_changed:
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factor = float(config.get('ui', 'default-zoom')) / 100
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self._set_factor_internal(factor)
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self._default_zoom_changed = False
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self._init_neighborlist()
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def _init_neighborlist(self):
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"""Initialize self._neighborlist."""
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levels = config.get('ui', 'zoom-levels')
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self._neighborlist = usertypes.NeighborList(
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levels, mode=usertypes.NeighborList.Modes.edge)
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self._neighborlist.fuzzyval = config.get('ui', 'default-zoom')
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def offset(self, offset):
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"""Increase/Decrease the zoom level by the given offset.
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Args:
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offset: The offset in the zoom level list.
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Return:
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The new zoom percentage.
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"""
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level = self._neighborlist.getitem(offset)
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self.set_factor(float(level) / 100, fuzzyval=False)
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return level
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def set_factor(self, factor, *, fuzzyval=True):
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"""Zoom to a given zoom factor.
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Args:
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factor: The zoom factor as float.
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fuzzyval: Whether to set the NeighborLists fuzzyval.
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"""
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if fuzzyval:
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self._neighborlist.fuzzyval = int(factor * 100)
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if factor < 0:
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raise ValueError("Can't zoom to factor {}!".format(factor))
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self._default_zoom_changed = True
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self._set_factor_internal(factor)
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def factor(self):
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raise NotImplementedError
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def set_default(self):
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default_zoom = config.get('ui', 'default-zoom')
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self._set_factor_internal(float(default_zoom) / 100)
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class AbstractCaret(QObject):
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"""Attribute of AbstractTab for caret browsing."""
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def __init__(self, win_id, tab, mode_manager, parent=None):
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super().__init__(parent)
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self._tab = tab
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self._win_id = win_id
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self._widget = None
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self.selection_enabled = False
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mode_manager.entered.connect(self._on_mode_entered)
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mode_manager.left.connect(self._on_mode_left)
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def _on_mode_entered(self, mode):
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raise NotImplementedError
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def _on_mode_left(self):
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raise NotImplementedError
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def move_to_next_line(self, count=1):
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raise NotImplementedError
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def move_to_prev_line(self, count=1):
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raise NotImplementedError
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def move_to_next_char(self, count=1):
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raise NotImplementedError
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def move_to_prev_char(self, count=1):
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raise NotImplementedError
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def move_to_end_of_word(self, count=1):
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raise NotImplementedError
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def move_to_next_word(self, count=1):
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raise NotImplementedError
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def move_to_prev_word(self, count=1):
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raise NotImplementedError
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def move_to_start_of_line(self):
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raise NotImplementedError
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def move_to_end_of_line(self):
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raise NotImplementedError
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def move_to_start_of_next_block(self, count=1):
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raise NotImplementedError
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def move_to_start_of_prev_block(self, count=1):
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raise NotImplementedError
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def move_to_end_of_next_block(self, count=1):
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raise NotImplementedError
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def move_to_end_of_prev_block(self, count=1):
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raise NotImplementedError
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def move_to_start_of_document(self):
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raise NotImplementedError
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def move_to_end_of_document(self):
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raise NotImplementedError
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def toggle_selection(self):
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raise NotImplementedError
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def drop_selection(self):
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raise NotImplementedError
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def has_selection(self):
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raise NotImplementedError
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def selection(self, html=False):
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raise NotImplementedError
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def follow_selected(self, *, tab=False):
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raise NotImplementedError
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class AbstractScroller(QObject):
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"""Attribute of AbstractTab to manage scroll position."""
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perc_changed = pyqtSignal(int, int)
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def __init__(self, tab, parent=None):
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super().__init__(parent)
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self._tab = tab
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self._widget = None
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def _init_widget(self, widget):
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self._widget = widget
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def pos_px(self):
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raise NotImplementedError
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def pos_perc(self):
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raise NotImplementedError
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def to_perc(self, x=None, y=None):
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raise NotImplementedError
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def to_point(self, point):
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raise NotImplementedError
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def delta(self, x=0, y=0):
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raise NotImplementedError
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def delta_page(self, x=0, y=0):
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raise NotImplementedError
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def up(self, count=1):
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raise NotImplementedError
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def down(self, count=1):
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raise NotImplementedError
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def left(self, count=1):
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raise NotImplementedError
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def right(self, count=1):
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raise NotImplementedError
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def top(self):
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raise NotImplementedError
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def bottom(self):
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raise NotImplementedError
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def page_up(self, count=1):
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raise NotImplementedError
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def page_down(self, count=1):
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raise NotImplementedError
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def at_top(self):
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raise NotImplementedError
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def at_bottom(self):
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raise NotImplementedError
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class AbstractHistory:
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"""The history attribute of a AbstractTab."""
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def __init__(self, tab):
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self._tab = tab
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self._history = None
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def __len__(self):
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return len(self._history)
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def __iter__(self):
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return iter(self._history.items())
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def current_idx(self):
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raise NotImplementedError
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def back(self):
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raise NotImplementedError
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def forward(self):
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raise NotImplementedError
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def can_go_back(self):
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raise NotImplementedError
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def can_go_forward(self):
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raise NotImplementedError
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def serialize(self):
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"""Serialize into an opaque format understood by self.deserialize."""
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raise NotImplementedError
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def deserialize(self, data):
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"""Serialize from a format produced by self.serialize."""
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raise NotImplementedError
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def load_items(self, items):
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"""Deserialize from a list of WebHistoryItems."""
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raise NotImplementedError
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class AbstractElements:
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"""Finding and handling of elements on the page."""
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def __init__(self, tab):
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self._widget = None
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self._tab = tab
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def find_css(self, selector, callback, *, only_visible=False):
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"""Find all HTML elements matching a given selector async.
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Args:
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callback: The callback to be called when the search finished.
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selector: The CSS selector to search for.
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only_visible: Only show elements which are visible on screen.
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"""
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raise NotImplementedError
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def find_id(self, elem_id, callback):
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"""Find the HTML element with the given ID async.
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Args:
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callback: The callback to be called when the search finished.
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elem_id: The ID to search for.
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"""
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raise NotImplementedError
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def find_focused(self, callback):
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"""Find the focused element on the page async.
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Args:
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callback: The callback to be called when the search finished.
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Called with a WebEngineElement or None.
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"""
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raise NotImplementedError
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def find_at_pos(self, pos, callback):
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"""Find the element at the given position async.
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This is also called "hit test" elsewhere.
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Args:
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pos: The QPoint to get the element for.
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callback: The callback to be called when the search finished.
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Called with a WebEngineElement or None.
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"""
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raise NotImplementedError
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class AbstractTab(QWidget):
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"""A wrapper over the given widget to hide its API and expose another one.
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We use this to unify QWebView and QWebEngineView.
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Attributes:
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history: The AbstractHistory for the current tab.
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registry: The ObjectRegistry associated with this tab.
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_load_status: loading status of this page
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Accessible via load_status() method.
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_has_ssl_errors: Whether SSL errors happened.
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Needs to be set by subclasses.
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for properties, see WebView/WebEngineView docs.
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Signals:
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See related Qt signals.
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new_tab_requested: Emitted when a new tab should be opened with the
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given URL.
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load_status_changed: The loading status changed
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"""
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window_close_requested = pyqtSignal()
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link_hovered = pyqtSignal(str)
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load_started = pyqtSignal()
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load_progress = pyqtSignal(int)
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load_finished = pyqtSignal(bool)
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icon_changed = pyqtSignal(QIcon)
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title_changed = pyqtSignal(str)
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load_status_changed = pyqtSignal(str)
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new_tab_requested = pyqtSignal(QUrl)
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url_changed = pyqtSignal(QUrl)
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shutting_down = pyqtSignal()
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contents_size_changed = pyqtSignal(QSizeF)
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add_history_item = pyqtSignal(QUrl, QUrl, str) # url, requested url, title
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def __init__(self, win_id, parent=None):
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self.win_id = win_id
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self.tab_id = next(tab_id_gen)
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super().__init__(parent)
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self.registry = objreg.ObjectRegistry()
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tab_registry = objreg.get('tab-registry', scope='window',
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window=win_id)
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tab_registry[self.tab_id] = self
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objreg.register('tab', self, registry=self.registry)
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# self.history = AbstractHistory(self)
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# self.scroller = AbstractScroller(self, parent=self)
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# self.caret = AbstractCaret(win_id=win_id, tab=self, mode_manager=...,
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# parent=self)
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# self.zoom = AbstractZoom(win_id=win_id)
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# self.search = AbstractSearch(parent=self)
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# self.printing = AbstractPrinting()
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# self.elements = AbstractElements(self)
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self.data = TabData()
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self._layout = miscwidgets.WrapperLayout(self)
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self._widget = None
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self._progress = 0
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self._has_ssl_errors = False
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self._load_status = usertypes.LoadStatus.none
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self._mouse_event_filter = mouse.MouseEventFilter(self, parent=self)
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self.backend = None
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# FIXME:qtwebengine Should this be public api via self.hints?
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# Also, should we get it out of objreg?
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hintmanager = hints.HintManager(win_id, self.tab_id, parent=self)
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objreg.register('hintmanager', hintmanager, scope='tab',
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window=self.win_id, tab=self.tab_id)
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def _set_widget(self, widget):
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# pylint: disable=protected-access
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self._widget = widget
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self._layout.wrap(self, widget)
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self.history._history = widget.history()
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self.scroller._init_widget(widget)
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self.caret._widget = widget
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self.zoom._widget = widget
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self.search._widget = widget
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self.printing._widget = widget
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self.elements._widget = widget
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self._install_event_filter()
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def _install_event_filter(self):
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raise NotImplementedError
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def _set_load_status(self, val):
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"""Setter for load_status."""
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if not isinstance(val, usertypes.LoadStatus):
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raise TypeError("Type {} is no LoadStatus member!".format(val))
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log.webview.debug("load status for {}: {}".format(repr(self), val))
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self._load_status = val
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self.load_status_changed.emit(val.name)
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def _event_target(self):
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"""Return the widget events should be sent to."""
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raise NotImplementedError
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def send_event(self, evt, *, postpone=False):
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"""Send the given event to the underlying widget.
|
|
|
|
Args:
|
|
postpone: Postpone the event to be handled later instead of
|
|
immediately. Using this might cause crashes in Qt.
|
|
"""
|
|
recipient = self._event_target()
|
|
if postpone:
|
|
QApplication.postEvent(recipient, evt)
|
|
else:
|
|
QApplication.sendEvent(recipient, evt)
|
|
|
|
@pyqtSlot(QUrl)
|
|
def _on_link_clicked(self, url):
|
|
log.webview.debug("link clicked: url {}, override target {}, "
|
|
"open_target {}".format(
|
|
url.toDisplayString(),
|
|
self.data.override_target,
|
|
self.data.open_target))
|
|
|
|
if not url.isValid():
|
|
msg = urlutils.get_errstring(url, "Invalid link clicked")
|
|
message.error(self.win_id, msg)
|
|
self.data.open_target = usertypes.ClickTarget.normal
|
|
return False
|
|
|
|
target = self.data.combined_target()
|
|
|
|
if target == usertypes.ClickTarget.normal:
|
|
return
|
|
elif target == usertypes.ClickTarget.tab:
|
|
win_id = self.win_id
|
|
bg_tab = False
|
|
elif target == usertypes.ClickTarget.tab_bg:
|
|
win_id = self.win_id
|
|
bg_tab = True
|
|
elif target == usertypes.ClickTarget.window:
|
|
from qutebrowser.mainwindow import mainwindow
|
|
window = mainwindow.MainWindow()
|
|
window.show()
|
|
win_id = window.win_id
|
|
bg_tab = False
|
|
else:
|
|
raise ValueError("Invalid ClickTarget {}".format(target))
|
|
|
|
tabbed_browser = objreg.get('tabbed-browser', scope='window',
|
|
window=win_id)
|
|
tabbed_browser.tabopen(url, background=bg_tab)
|
|
self.data.open_target = usertypes.ClickTarget.normal
|
|
|
|
@pyqtSlot(QUrl)
|
|
def _on_url_changed(self, url):
|
|
"""Update title when URL has changed and no title is available."""
|
|
if url.isValid() and not self.title():
|
|
self.title_changed.emit(url.toDisplayString())
|
|
self.url_changed.emit(url)
|
|
|
|
@pyqtSlot()
|
|
def _on_load_started(self):
|
|
self._progress = 0
|
|
self._has_ssl_errors = False
|
|
self.data.viewing_source = False
|
|
self._set_load_status(usertypes.LoadStatus.loading)
|
|
self.load_started.emit()
|
|
|
|
@pyqtSlot(bool)
|
|
def _on_load_finished(self, ok):
|
|
if ok and not self._has_ssl_errors:
|
|
if self.url().scheme() == 'https':
|
|
self._set_load_status(usertypes.LoadStatus.success_https)
|
|
else:
|
|
self._set_load_status(usertypes.LoadStatus.success)
|
|
|
|
elif ok:
|
|
self._set_load_status(usertypes.LoadStatus.warn)
|
|
else:
|
|
self._set_load_status(usertypes.LoadStatus.error)
|
|
self.load_finished.emit(ok)
|
|
if not self.title():
|
|
self.title_changed.emit(self.url().toDisplayString())
|
|
|
|
@pyqtSlot()
|
|
def _on_history_trigger(self):
|
|
"""Emit add_history_item when triggered by backend-specific signal."""
|
|
raise NotImplementedError
|
|
|
|
@pyqtSlot(int)
|
|
def _on_load_progress(self, perc):
|
|
self._progress = perc
|
|
self.load_progress.emit(perc)
|
|
|
|
@pyqtSlot()
|
|
def _on_ssl_errors(self):
|
|
self._has_ssl_errors = True
|
|
|
|
def url(self, requested=False):
|
|
raise NotImplementedError
|
|
|
|
def progress(self):
|
|
return self._progress
|
|
|
|
def load_status(self):
|
|
return self._load_status
|
|
|
|
def _openurl_prepare(self, url):
|
|
qtutils.ensure_valid(url)
|
|
self.title_changed.emit(url.toDisplayString())
|
|
|
|
def openurl(self, url):
|
|
raise NotImplementedError
|
|
|
|
def reload(self, *, force=False):
|
|
raise NotImplementedError
|
|
|
|
def stop(self):
|
|
raise NotImplementedError
|
|
|
|
def clear_ssl_errors(self):
|
|
raise NotImplementedError
|
|
|
|
def dump_async(self, callback, *, plain=False):
|
|
"""Dump the current page to a file ascync.
|
|
|
|
The given callback will be called with the result when dumping is
|
|
complete.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def run_js_async(self, code, callback=None):
|
|
"""Run javascript async.
|
|
|
|
The given callback will be called with the result when running JS is
|
|
complete.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def shutdown(self):
|
|
raise NotImplementedError
|
|
|
|
def title(self):
|
|
raise NotImplementedError
|
|
|
|
def icon(self):
|
|
raise NotImplementedError
|
|
|
|
def set_html(self, html, base_url):
|
|
raise NotImplementedError
|
|
|
|
def __repr__(self):
|
|
try:
|
|
url = utils.elide(self.url().toDisplayString(QUrl.EncodeUnicode),
|
|
100)
|
|
except AttributeError:
|
|
url = '<AttributeError>'
|
|
return utils.get_repr(self, tab_id=self.tab_id, url=url)
|