c8fd0937b0
This reverts commit bf2c7831c8.
This was a bad idea as we need to access some of the main attributes
from commands via instance=...
107 lines
3.6 KiB
Python
107 lines
3.6 KiB
Python
# Copyright 2014 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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"""The main browser widgets."""
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import sip
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from PyQt5.QtWidgets import QApplication
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from PyQt5.QtNetwork import QNetworkReply
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from PyQt5.QtWebKitWidgets import QWebPage
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import qutebrowser.utils.url as urlutils
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import qutebrowser.config.config as config
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from qutebrowser.utils.misc import read_file
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class BrowserPage(QWebPage):
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"""Our own QWebPage with advanced features.
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Attributes:
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_extension_handlers: Mapping of QWebPage extensions to their handlers.
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network_access_manager: The QNetworkAccessManager used.
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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._extension_handlers = {
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QWebPage.ErrorPageExtension: self._handle_errorpage,
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}
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self.setNetworkAccessManager(QApplication.instance().networkmanager)
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def _handle_errorpage(self, opt, out):
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"""Display an error page if needed.
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Loosly based on Helpviewer/HelpBrowserWV.py from eric5
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(line 260 @ 5d937eb378dd)
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Args:
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opt: The QWebPage.ErrorPageExtensionOption instance.
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out: The QWebPage.ErrorPageExtensionReturn instance to write return
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values to.
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Return:
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False if no error page should be displayed, True otherwise.
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"""
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info = sip.cast(opt, QWebPage.ErrorPageExtensionOption)
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errpage = sip.cast(out, QWebPage.ErrorPageExtensionReturn)
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errpage.baseUrl = info.url
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if (info.domain == QWebPage.QtNetwork and
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info.error == QNetworkReply.OperationCanceledError):
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return False
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urlstr = urlutils.urlstring(info.url)
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title = "Error loading page: {}".format(urlstr)
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errpage.content = read_file('html/error.html').format(
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title=title, url=urlstr, error=info.errorString, icon='')
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return True
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def userAgentForUrl(self, url):
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"""Override QWebPage::userAgentForUrl to customize the user agent."""
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ua = config.get('network', 'user-agent')
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if not ua:
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return super().userAgentForUrl(url)
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else:
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return ua
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def supportsExtension(self, ext):
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"""Override QWebPage::supportsExtension to provide error pages.
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Args:
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ext: The extension to check for.
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Return:
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True if the extension can be handled, False otherwise.
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"""
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return ext in self._extension_handlers
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def extension(self, ext, opt, out):
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"""Override QWebPage::extension to provide error pages.
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Args:
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ext: The extension.
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opt: Extension options instance.
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out: Extension output instance.
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Return:
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Handler return value.
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"""
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try:
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handler = self._extension_handlers[ext]
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except KeyError:
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return super().extension(ext, opt, out)
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return handler(opt, out)
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