File Content: QUrlOpener.py # QUrlOpener.py # -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*- # # Copyright (c) 2014-2018 Harald Sitter <apachelogger@kubuntu.org> # # This program 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 2 of the # License, or (at your option) any later version. # # This program 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 this program. If not, see <http://www.gnu.org/licenses/>. try: # 14.04 has a broken pyqt5, so don't even try to import it and require # pyqt4. # In 14.04 various signals in pyqt5 can not be connected because it thinks # the signal does not exist or has an incompatible signature. Since this # potentially renders the GUI entirely broken and pyqt5 was not actively # used back then it is fair to simply require qt4 on trusty systems. from .utils import get_dist if get_dist() == 'trusty': raise ImportError from PyQt5.QtCore import QObject, QCoreApplication, pyqtSlot, QUrl from PyQt5.QtGui import QDesktopServices except ImportError: from PyQt4.QtCore import QObject, QCoreApplication, pyqtSlot, QUrl from PyQt4.QtGui import QDesktopServices import os import subprocess def singleton(class_): instances = {} def instance(*args, **kwargs): if class_ not in instances: instances[class_] = class_(*args, **kwargs) return instances[class_] return instance @singleton class QUrlOpener(QObject): def __init__(self): QObject.__init__(self) self.setParent(QCoreApplication.instance()) def setupUrlHandles(self): # Make sure we don't run a root browser. # NOTE: Qt native API can set an openUrl handler from a QObject # function, pyqt in theory also allows an arbitrary callable. Latter # has been observed to be non-functional so rely on the native handling QDesktopServices.setUrlHandler('http', self, 'openUrl') QDesktopServices.setUrlHandler('https', self, 'openUrl') # NOTE: largely code copy from ReleaseNotesViewer which imports GTK. @pyqtSlot(QUrl) def openUrl(self, url): url = url.toString() """Open the specified URL in a browser""" # Find an appropiate browser if os.path.exists("/usr/bin/xdg-open"): command = ["xdg-open", url] elif os.path.exists("/usr/bin/kde-open"): command = ["kde-open", url] elif os.path.exists("/usr/bin/exo-open"): command = ["exo-open", url] elif os.path.exists('/usr/bin/gnome-open'): command = ['gnome-open', url] else: command = ['x-www-browser', url] # Avoid to run the browser as user root if os.getuid() == 0 and 'SUDO_USER' in os.environ: command = ['sudo', '--set-home', '-u', os.environ['SUDO_USER']] + command subprocess.Popen(command) Submit