705 lines
24 KiB
Python
Executable File
705 lines
24 KiB
Python
Executable File
#
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# Copyright (C) 2012 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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# Red Hat Author(s): Martin Gracik <mgracik@redhat.com>
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# Vratislav Podzimek <vpodzime@redhat.com>
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#
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"""
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This module include functions and classes for dealing with multiple layouts
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in Anaconda. It wraps the libxklavier functionality to protect Anaconda
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from dealing with its "nice" API that looks like a Lisp-influenced
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"good old C".
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It provides a XklWrapper class with several methods that can be used
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for listing and various modifications of keyboard layouts settings.
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"""
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import os
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import dbus
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from pyanaconda import iutil
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# pylint: disable-msg=E0611
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from gi.repository import Xkl
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import logging
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log = logging.getLogger("anaconda")
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LOCALED_SERVICE = "org.freedesktop.locale1"
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LOCALED_OBJECT_PATH = "/org/freedesktop/locale1"
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LOCALED_IFACE = "org.freedesktop.locale1"
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class KeyboardConfigError(Exception):
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"""Exception class for keyboard configuration related problems"""
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pass
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def _parse_layout_variant(layout):
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"""
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Parse layout and variant from the string that may look like 'layout' or
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'layout (variant)'.
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@return: the (layout, variant) pair, where variant can be ""
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@rtype: tuple
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"""
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variant = ""
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lbracket_idx = layout.find("(")
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rbracket_idx = layout.rfind(")")
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if lbracket_idx != -1:
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variant = layout[(lbracket_idx + 1) : rbracket_idx]
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layout = layout[:lbracket_idx].strip()
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return (layout, variant)
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def _join_layout_variant(layout, variant=""):
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"""
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Join layout and variant to form the commonly used 'layout (variant)'
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or 'layout' (if variant is missing) format.
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@type layout: string
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@type variant: string
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@return: 'layout (variant)' or 'layout' string
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@rtype: string
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"""
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if variant:
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return "%s (%s)" % (layout, variant)
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else:
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return layout
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def get_layouts_xorg_conf(keyboard):
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"""
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Get the xorg.conf content setting up layouts in the ksdata.
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@param keyboard: ksdata.keyboard object
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@rtype: str
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"""
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layouts = list()
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variants = list()
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for layout_variant in keyboard.x_layouts:
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(layout, variant) = _parse_layout_variant(layout_variant)
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layouts.append(layout)
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variants.append(variant)
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ret = "#This file was generated by the Anaconda installer\n"
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#section header
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ret += 'Section "InputClass"\n'\
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'\tIdentifier\t"anaconda-keyboard"\n'\
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'\tMatchIsKeyboard\t"on"\n'
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#layouts
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ret += '\tOption\t"XkbLayout"\t'
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ret += '"' + ','.join(layouts) + '"\n'
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#variants
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if any(variants):
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#write out this line only if some variants are specified
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ret += '\tOption\t"XkbVariant"\t'
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ret += '"' + ','.join(variants) + '"\n'
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#switching
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if any(keyboard.switch_options):
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ret += '\tOption\t"XkbOptions"\t'
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ret += '"' + ','.join(keyboard.switch_options) + '"\n'
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#section footer
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ret += 'EndSection'
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return ret
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def populate_missing_items(keyboard):
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"""
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Function that populates keyboard.vc_keymap and keyboard.x_layouts if
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they are missing. By invoking LocaledWrapper's methods this function
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MODIFIES CONFIGURATION FILES.
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@type keyboard: ksdata.keyboard object
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"""
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localed = LocaledWrapper()
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if keyboard.x_layouts and not keyboard.vc_keymap:
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keyboard.vc_keymap = localed.set_and_convert_layout(keyboard.x_layouts[0])
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if not keyboard.vc_keymap:
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keyboard.vc_keymap = "us"
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if not keyboard.x_layouts:
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c_lay_var = localed.set_and_convert_keymap(keyboard.vc_keymap)
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keyboard.x_layouts.append(c_lay_var)
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def write_keyboard_config(keyboard, root, convert=True, weight=0):
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"""
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Function that writes files with layouts configuration to
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$root/etc/X11/xorg.conf.d/01-anaconda-layouts.conf and
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$root/etc/vconsole.conf.
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@param keyboard: ksdata.keyboard object
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@param root: path to the root of the installed system
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@param convert: whether to convert specified values to get the missing
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ones
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@param weight: weight (prefix) of the xorg.conf file written out
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"""
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if convert:
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populate_missing_items(keyboard)
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xconf_dir = os.path.normpath(root + "/etc/X11/xorg.conf.d")
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xconf_file = "%0.2d-anaconda-keyboard.conf" % weight
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vcconf_dir = os.path.normpath(root + "/etc")
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vcconf_file = "vconsole.conf"
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errors = []
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try:
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if not os.path.isdir(xconf_dir):
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os.makedirs(xconf_dir)
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except OSError as oserr:
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errors.append("Cannot create directory xorg.conf.d")
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if keyboard.x_layouts:
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try:
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with open(os.path.join(xconf_dir, xconf_file), "w") as fobj:
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fobj.write(get_layouts_xorg_conf(keyboard))
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except IOError as ioerr:
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errors.append("Cannot write X keyboard configuration file")
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if keyboard.vc_keymap:
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try:
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with open(os.path.join(vcconf_dir, vcconf_file), "w") as fobj:
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fobj.write('KEYMAP="%s"\n' % keyboard.vc_keymap)
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except IOError as ioerr:
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errors.append("Cannot write vconsole configuration file")
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if errors:
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raise KeyboardConfigError("\n".join(errors))
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def dracut_setup_args(keyboard):
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"""
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Function returning dracut setup args for the given keyboard configuration.
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@type keyboard: ksdata.keyboard object
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"""
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if not keyboard.vc_keymap:
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populate_missing_items(keyboard)
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args = set()
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args.add("vconsole.keymap=%s" % keyboard.vc_keymap)
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return args
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def _try_to_load_keymap(keymap):
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"""
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Method that tries to load keymap and returns boolean indicating if it was
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successfull or not. It can be used to test if given string is VConsole
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keymap or not, but in case it is given valid keymap, IT REALLY LOADS IT!.
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@type keymap: string
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@raise KeyboardConfigError: if loadkeys command is not available
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@return: True if given string was a valid keymap and thus was loaded,
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False otherwise
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"""
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# BUG: systemd-localed should be able to tell us if we are trying to
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# activate invalid keymap. Then we will be able to get rid of this
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# fuction
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ret = 0
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try:
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ret = iutil.execWithRedirect("loadkeys", [keymap], stdout="/dev/tty5",
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stderr="/dev/tty5")
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except OSError as oserr:
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msg = "'loadkeys' command not available (%s)" % oserr.strerror
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raise KeyboardConfigError(msg)
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return ret == 0
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def activate_keyboard(keyboard):
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"""
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Try to setup VConsole keymap and X11 layouts as specified in kickstart.
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@param keyboard: ksdata.keyboard object
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@type keyboard: ksdata.keyboard object
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"""
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localed = LocaledWrapper()
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c_lay_var = ""
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c_keymap = ""
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if keyboard._keyboard and not (keyboard.vc_keymap or keyboard.x_layouts):
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# we were give only one value in old format of the keyboard command
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# try to guess if we were given VConsole keymap or X11 layout
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is_keymap = _try_to_load_keymap(keyboard._keyboard)
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if is_keymap:
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keyboard.vc_keymap = keyboard._keyboard
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else:
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keyboard.x_layouts.append(keyboard._keyboard)
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if keyboard.vc_keymap:
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valid_keymap = _try_to_load_keymap(keyboard.vc_keymap)
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if not valid_keymap:
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log.error("'%s' is not a valid VConsole keymap, not loading" % \
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keyboard.vc_keymap)
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else:
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# activate VConsole keymap and get converted layout and variant
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c_lay_var = localed.set_and_convert_keymap(keyboard.vc_keymap)
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if not keyboard.x_layouts and c_lay_var:
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keyboard.x_layouts.append(c_lay_var)
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if keyboard.x_layouts:
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c_keymap = localed.set_and_convert_layout(keyboard.x_layouts[0])
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if not keyboard.vc_keymap:
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keyboard.vc_keymap = c_keymap
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# write out full configuration that will be loaded by X server
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# (systemd-localed writes configuration with only one layout)
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write_keyboard_config(keyboard, root="/", convert=False, weight=99)
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def item_str(s):
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"""Convert a zero-terminated byte array to a proper str"""
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i = s.find(b'\x00')
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return s[:i].decode("utf-8") #there are some non-ascii layout descriptions
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class _Layout(object):
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"""Internal class representing a single layout variant"""
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def __init__(self, name, desc):
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self.name = name
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self.desc = desc
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def __str__(self):
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return '%s (%s)' % (self.name, self.desc)
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def __eq__(self, obj):
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return isinstance(obj, self.__class__) and \
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self.name == obj.name
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@property
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def description(self):
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return self.desc
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class XklWrapperError(KeyboardConfigError):
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"""Exception class for reporting libxklavier-related problems"""
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pass
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class XklWrapper(object):
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"""
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Class wrapping the libxklavier functionality
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Use this class as a singleton class because it provides read-only data
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and initialization (that takes quite a lot of time) reads always the
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same data. It doesn't have sense to make multiple instances
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"""
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_instance = None
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@staticmethod
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def get_instance():
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if not XklWrapper._instance:
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XklWrapper._instance = XklWrapper()
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return XklWrapper._instance
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def __init__(self):
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# pylint: disable-msg=E0611
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from gi.repository import GdkX11
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#initialize Xkl-related stuff
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display = GdkX11.x11_get_default_xdisplay()
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self._engine = Xkl.Engine.get_instance(display)
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self._rec = Xkl.ConfigRec()
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if not self._rec.get_from_server(self._engine):
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raise XklWrapperError("Failed to get configuration from server")
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#X is probably initialized to the 'us' layout without any variant and
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#since we want to add layouts with variants we need the layouts and
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#variants lists to have the same length. Add "" padding to variants.
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#See docstring of the add_layout method for details.
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diff = len(self._rec.layouts) - len(self._rec.variants)
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if diff > 0:
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self._rec.set_variants(self._rec.variants + (diff * [""]))
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if not self._rec.activate(self._engine):
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raise XklWrapperError("Failed to initialize layouts")
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#needed also for Gkbd.KeyboardDrawingDialog
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self.configreg = Xkl.ConfigRegistry.get_instance(self._engine)
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self.configreg.load(False)
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self._language_keyboard_variants = dict()
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self._country_keyboard_variants = dict()
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self._switching_options = list()
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#we want to display layouts as 'language (description)'
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self.name_to_show_str = dict()
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#we want to display layout switching options as e.g. "Alt + Shift" not
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#as "grp:alt_shift_toggle"
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self.switch_to_show_str = dict()
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#this might take quite a long time
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self.configreg.foreach_language(self._get_language_variants, None)
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self.configreg.foreach_country(self._get_country_variants, None)
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#'grp' means that we want layout (group) switching options
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self.configreg.foreach_option('grp', self._get_switch_option, None)
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def _get_variant(self, c_reg, item, subitem, lang):
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if subitem:
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name = item_str(item.name) + " (" + item_str(subitem.name) + ")"
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description = item_str(subitem.description)
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else:
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name = item_str(item.name)
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description = item_str(item.description)
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#if this layout has already been added for some other language,
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#do not add it again (would result in duplicates in our lists)
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if lang and name not in self.name_to_show_str:
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self.name_to_show_str[name] = "%s (%s)" % (lang.encode("utf-8"),
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description.encode("utf-8"))
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self._variants_list.append(_Layout(name, description))
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elif lang is None:
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#if lang is None, we are iterating over countries not languages
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#and should just append the layout to the list
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self._variants_list.append(_Layout(name, description))
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def _get_language_variants(self, c_reg, item, user_data=None):
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#helper "global" variable
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self._variants_list = list()
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lang_name, lang_desc = item_str(item.name), item_str(item.description)
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c_reg.foreach_language_variant(lang_name, self._get_variant, lang_desc)
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self._language_keyboard_variants[lang_desc] = self._variants_list
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def _get_country_variants(self, c_reg, item, user_data=None):
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#helper "global" variable
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self._variants_list = list()
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country_name, country_desc = item_str(item.name), item_str(item.description)
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c_reg.foreach_country_variant(country_name, self._get_variant, None)
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self._country_keyboard_variants[country_name] = self._variants_list
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def _get_switch_option(self, c_reg, item, user_data=None):
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"""Helper function storing layout switching options in foreach cycle"""
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desc = item_str(item.description)
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name = item_str(item.name)
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self._switching_options.append(name)
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self.switch_to_show_str[name] = desc.encode("utf-8")
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def get_available_layouts(self):
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"""A generator yielding layouts (no need to store them as a bunch)"""
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for lang_desc, variants in sorted(self._language_keyboard_variants.items()):
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for layout in variants:
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yield layout.name
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def get_switching_options(self):
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"""Method returning list of available layout switching options"""
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return self._switching_options
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def get_default_language_layout(self, language):
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"""Get the default layout for a given language."""
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layouts = self.get_language_layouts(language)
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if layouts:
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#first layout (should exist for every language)
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return layouts[0].name
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else:
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return None
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def get_language_layouts(self, language):
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"""Get layouts for a given language."""
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language_layouts = self._language_keyboard_variants.get(language, None)
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if language_layouts:
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return language_layouts
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#else try some magic and if everything fails, return None
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for (lang, layouts) in self._language_keyboard_variants.iteritems():
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#XXX: some languages are returned in a weird form from the
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# libxklavier iterations (e.g. "Greek, Modern (1453-)")
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if lang.startswith(language):
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return layouts
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return None
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def get_default_lang_country_layout(self, language, country):
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"""
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Get default layout matching both language and country. If none such
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layout is found, get default layout for language.
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"""
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language_layouts = self.get_language_layouts(language)
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country_layouts = self._country_keyboard_variants.get(country, None)
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if not language_layouts:
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return None
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matches_both = (layout for layout in language_layouts
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if layout in country_layouts)
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try:
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return matches_both.next().name
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except StopIteration:
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return language_layouts[0].name
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def get_current_layout_name(self):
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"""
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Get current activated X layout's name
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@return: current activated X layout's name (e.g. "Czech (qwerty)")
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"""
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self._engine.start_listen(Xkl.EngineListenModes.TRACK_KEYBOARD_STATE)
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state = self._engine.get_current_state()
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groups_names = self._engine.get_groups_names()
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self._engine.stop_listen(Xkl.EngineListenModes.TRACK_KEYBOARD_STATE)
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return groups_names[state.group]
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def is_valid_layout(self, layout):
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"""Return if given layout is valid layout or not"""
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return layout in self.name_to_show_str
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def add_layout(self, layout):
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"""
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Method that tries to add a given layout to the current X configuration.
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The X layouts configuration is handled by two lists. A list of layouts
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and a list of variants. Index-matching items in these lists (as if they
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were zipped) are used for the construction of real layouts (e.g.
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'cz (qwerty)').
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@param layout: either 'layout' or 'layout (variant)'
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@raise XklWrapperError: if the given layout cannot be added
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"""
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#we can get 'layout' or 'layout (variant)'
|
|
(layout, variant) = _parse_layout_variant(layout)
|
|
|
|
#do not add the same layout-variant combinanion multiple times
|
|
if (layout, variant) in zip(self._rec.layouts, self._rec.variants):
|
|
return
|
|
|
|
self._rec.set_layouts(self._rec.layouts + [layout])
|
|
self._rec.set_variants(self._rec.variants + [variant])
|
|
|
|
if not self._rec.activate(self._engine):
|
|
raise XklWrapperError("Failed to add layout '%s (%s)'" % (layout,
|
|
variant))
|
|
|
|
def remove_layout(self, layout):
|
|
"""
|
|
Method that tries to remove a given layout from the current X
|
|
configuration.
|
|
|
|
See also the documentation for the add_layout method.
|
|
|
|
@param layout: either 'layout' or 'layout (variant)'
|
|
@raise XklWrapperError: if the given layout cannot be removed
|
|
|
|
"""
|
|
|
|
#we can get 'layout' or 'layout (variant)'
|
|
(layout, variant) = _parse_layout_variant(layout)
|
|
|
|
layouts_variants = zip(self._rec.layouts, self._rec.variants)
|
|
|
|
if not (layout, variant) in layouts_variants:
|
|
msg = "'%s (%s)' not in the list of added layouts" % (layout,
|
|
variant)
|
|
raise XklWrapperError(msg)
|
|
|
|
idx = layouts_variants.index((layout, variant))
|
|
new_layouts = self._rec.layouts[:idx] + self._rec.layouts[(idx + 1):]
|
|
new_variants = self._rec.variants[:idx] + self._rec.variants[(idx + 1):]
|
|
|
|
self._rec.set_layouts(new_layouts)
|
|
self._rec.set_variants(new_variants)
|
|
|
|
if not self._rec.activate(self._engine):
|
|
raise XklWrapperError("Failed to remove layout '%s (%s)'" % (layout,
|
|
variant))
|
|
def replace_layouts(self, layouts_list):
|
|
"""
|
|
Method that replaces the layouts defined in the current X configuration
|
|
with the new ones given.
|
|
|
|
@param layouts_list: list of layouts defined as either 'layout' or
|
|
'layout (variant)'
|
|
@raise XklWrapperError: if layouts cannot be replaced with the new ones
|
|
|
|
"""
|
|
|
|
new_layouts = list()
|
|
new_variants = list()
|
|
|
|
for layout_variant in layouts_list:
|
|
(layout, variant) = _parse_layout_variant(layout_variant)
|
|
new_layouts.append(layout)
|
|
new_variants.append(variant)
|
|
|
|
self._rec.set_layouts(new_layouts)
|
|
self._rec.set_variants(new_variants)
|
|
|
|
if not self._rec.activate(self._engine):
|
|
msg = "Failed to replace layouts with: %s" % ",".join(layouts_list)
|
|
raise XklWrapperError(msg)
|
|
|
|
def set_switching_options(self, options):
|
|
"""
|
|
Method that sets options for layout switching. It replaces the old
|
|
options with the new ones.
|
|
|
|
@param options: layout switching options to be set
|
|
@type options: list or generator
|
|
@raise XklWrapperError: if the old options cannot be replaced with the
|
|
new ones
|
|
|
|
"""
|
|
|
|
#preserve old "non-switching options"
|
|
new_options = [opt for opt in self._rec.options if "grp:" not in opt]
|
|
new_options += options
|
|
|
|
self._rec.set_options(new_options)
|
|
|
|
if not self._rec.activate(self._engine):
|
|
msg = "Failed to set switching options to: %s" % ",".join(options)
|
|
raise XklWrapperError(msg)
|
|
|
|
class LocaledWrapperError(KeyboardConfigError):
|
|
"""Exception class for reporting Localed-related problems"""
|
|
pass
|
|
|
|
class LocaledWrapper(object):
|
|
"""
|
|
Class wrapping systemd-localed daemon functionality.
|
|
|
|
"""
|
|
|
|
def __init__(self):
|
|
bus = dbus.SystemBus()
|
|
|
|
try:
|
|
localed = bus.get_object(LOCALED_SERVICE, LOCALED_OBJECT_PATH)
|
|
except dbus.DBusException:
|
|
raise LocaledWrapperError("Failed to get locale object")
|
|
|
|
try:
|
|
self._locale_iface = dbus.Interface(localed, LOCALED_IFACE)
|
|
except dbus.DBusException:
|
|
raise LocaledWrapperError("Failed to get locale interface")
|
|
|
|
try:
|
|
self._props_iface = dbus.Interface(localed, dbus.PROPERTIES_IFACE)
|
|
except dbus.DBusException:
|
|
raise LocaledWrapperError("Failed to get properties interface")
|
|
|
|
def set_and_convert_keymap(self, keymap):
|
|
"""
|
|
Method that sets VConsole keymap and returns X11 layout and
|
|
variant that (systemd-localed thinks) match given keymap best.
|
|
|
|
@return: string containing "layout (variant)" or "layout" if variant
|
|
is missing
|
|
@rtype: string
|
|
|
|
"""
|
|
|
|
# args: keymap, keymap_toggle, convert, user_interaction
|
|
# where convert indicates whether the keymap should be converted
|
|
# to X11 layout and user_interaction indicates whether PolicyKit
|
|
# should ask for credentials or not
|
|
try:
|
|
self._locale_iface.SetVConsoleKeyboard(keymap, "", True, False)
|
|
except dbus.DBusException:
|
|
msg = "Failed to call SetVConsoleKeyboard method"
|
|
raise LocaledWrapperError(msg)
|
|
|
|
try:
|
|
layout = self._props_iface.Get(LOCALED_IFACE, "X11Layout")
|
|
except dbus.DBusException:
|
|
raise LocaledWrapperError("locale has no X11Layout property")
|
|
|
|
try:
|
|
variant = self._props_iface.Get(LOCALED_IFACE, "X11Variant")
|
|
except dbus.DBusException:
|
|
raise LocaledWrapperError("locale has no X11Variant property")
|
|
|
|
return _join_layout_variant(layout, variant)
|
|
|
|
def set_and_convert_layout(self, layout_variant):
|
|
"""
|
|
Method that sets X11 layout and variant (for later X sessions)
|
|
and returns VConsole keymap that (systemd-localed thinks) matches
|
|
given layout and variant best.
|
|
|
|
@return: a keymap matching layout and variant best
|
|
@rtype: string
|
|
|
|
"""
|
|
|
|
(layout, variant) = _parse_layout_variant(layout_variant)
|
|
|
|
# args: layout, model, variant, options, convert, user_interaction
|
|
# where convert indicates whether the keymap should be converted
|
|
# to X11 layout and user_interaction indicates whether PolicyKit
|
|
# should ask for credentials or not
|
|
try:
|
|
self._locale_iface.SetX11Keyboard(layout, "", variant, "", True, False)
|
|
except dbus.DBusException:
|
|
msg = "Failed to call SetX11Keyboard method"
|
|
raise LocaledWrapperError(msg)
|
|
|
|
try:
|
|
return self._props_iface.Get(LOCALED_IFACE, "VConsoleKeymap")
|
|
except dbus.DBusException:
|
|
raise LocaledWrapperError("locale has no VConsoleKeymap property")
|