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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2015-2021 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 <https://www.gnu.org/licenses/>.
"""Tools related to error printing/displaying."""
from qutebrowser.qt.widgets import QMessageBox
from qutebrowser.utils import log, utils
def _get_name(exc: BaseException) -> str:
"""Get a suitable exception name as a string."""
prefixes = ['qutebrowser', 'builtins']
name = utils.qualname(exc.__class__)
for prefix in prefixes:
if name.startswith(prefix):
name = name[len(prefix) + 1:]
break
return name
def handle_fatal_exc(exc: BaseException,
title: str, *,
no_err_windows: bool,
pre_text: str = '',
post_text: str = '') -> None:
"""Handle a fatal "expected" exception by displaying an error box.
If --no-err-windows is given as argument, the text is logged to the error
logger instead.
Args:
exc: The Exception object being handled.
no_err_windows: Show text in log instead of error window.
title: The title to be used for the error message.
pre_text: The text to be displayed before the exception text.
post_text: The text to be displayed after the exception text.
"""
if no_err_windows:
lines = [
"Handling fatal {} with --no-err-windows!".format(_get_name(exc)),
"",
"title: {}".format(title),
"pre_text: {}".format(pre_text),
"post_text: {}".format(post_text),
"exception text: {}".format(str(exc) or 'none'),
]
log.misc.error('\n'.join(lines))
else:
log.misc.error("Fatal exception:")
if pre_text:
msg_text = '{}: {}'.format(pre_text, exc)
else:
msg_text = str(exc)
if post_text:
msg_text += '\n\n{}'.format(post_text)
msgbox = QMessageBox(QMessageBox.Icon.Critical, title, msg_text)
msgbox.exec()
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