9b0395db08
When loading heise.de, for some crazy reason QtWebKit calls historyContains about 16'000 times. With this cache (which we simply clear when *any* page has been loaded, as then the links which have been visited can change), that's down to 250 or so...
68 lines
2.1 KiB
Python
68 lines
2.1 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
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# Copyright 2015-2017 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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"""QtWebKit specific part of history."""
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import functools
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from PyQt5.QtWebKit import QWebHistoryInterface
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from qutebrowser.utils import debug
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class WebHistoryInterface(QWebHistoryInterface):
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"""Glue code between WebHistory and Qt's QWebHistoryInterface.
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Attributes:
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_history: The WebHistory object.
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"""
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def __init__(self, webhistory, parent=None):
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super().__init__(parent)
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self._history = webhistory
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self._history.changed.connect(self.historyContains.cache_clear)
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def addHistoryEntry(self, url_string):
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"""Required for a QWebHistoryInterface impl, obsoleted by add_url."""
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pass
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@functools.lru_cache(maxsize=32768)
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def historyContains(self, url_string):
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"""Called by WebKit to determine if a URL is contained in the history.
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Args:
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url_string: The URL (as string) to check for.
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Return:
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True if the url is in the history, False otherwise.
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"""
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with debug.log_time('sql', 'historyContains'):
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return url_string in self._history
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def init(history):
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"""Initialize the QWebHistoryInterface.
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Args:
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history: The WebHistory object.
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"""
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interface = WebHistoryInterface(history, parent=history)
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QWebHistoryInterface.setDefaultInterface(interface)
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