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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2017-2021 Ryan Roden-Corrent (rcorre) <ryan@rcorre.net>
#
# 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/>.
"""Completion category that uses a list of tuples as a data source."""
import re
from typing import Iterable, Tuple
from qutebrowser.completion.models import util
from qutebrowser.qt import QtCore, QtGui, QtWidgets
from qutebrowser.utils import log, qtutils
class ListCategory(QtCore.QSortFilterProxyModel):
"""Expose a list of items as a category for the CompletionModel."""
def __init__(
self,
name: str,
items: Iterable[Tuple[str, ...]],
sort: bool = True,
delete_func: util.DeleteFuncType = None,
parent: QtWidgets.QWidget = None,
):
super().__init__(parent)
self.name = name
self.srcmodel = QtGui.QStandardItemModel(parent=self)
self._pattern = ''
# ListCategory filters all columns
self.columns_to_filter = [0, 1, 2]
self.setFilterKeyColumn(-1)
for item in items:
self.srcmodel.appendRow([QtGui.QStandardItem(x) for x in item])
self.setSourceModel(self.srcmodel)
self.delete_func = delete_func
self._sort = sort
def set_pattern(self, val):
"""Setter for pattern.
Args:
val: The value to set.
"""
if len(val) > 5000: # avoid crash on huge search terms (#5973)
log.completion.warning(f"Trimming {len(val)}-char pattern to 5000")
val = val[:5000]
self._pattern = val
val = re.sub(r' +', r' ', val) # See #1919
val = re.escape(val)
val = val.replace(r'\ ', '.*')
rx = QtCore.QRegularExpression(
val, QtCore.QRegularExpression.CaseInsensitiveOption
)
qtutils.ensure_valid(rx)
self.setFilterRegularExpression(rx)
self.invalidate()
sortcol = 0
self.sort(sortcol)
def lessThan(self, lindex, rindex):
"""Custom sorting implementation.
Prefers all items which start with self._pattern. Other than that, uses
normal Python string sorting.
Args:
lindex: The QModelIndex of the left item (*left* < right)
rindex: The QModelIndex of the right item (left < *right*)
Return:
True if left < right, else False
"""
qtutils.ensure_valid(lindex)
qtutils.ensure_valid(rindex)
left = self.srcmodel.data(lindex)
right = self.srcmodel.data(rindex)
if left is None or right is None: # pragma: no cover
log.completion.warning("Got unexpected None value, "
"left={!r} right={!r} "
"lindex={!r} rindex={!r}"
.format(left, right, lindex, rindex))
return False
leftstart = left.startswith(self._pattern)
rightstart = right.startswith(self._pattern)
if leftstart and not rightstart:
return True
elif rightstart and not leftstart:
return False
elif self._sort:
return left < right
else:
return False
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