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# -*- coding: UTF-8 -*-
# This example is contributed by Martin Enlund
# Example modified for Tilix
# Shortcuts Provider was inspired by captain nemo extension

from gettext import gettext, textdomain
from subprocess import PIPE, call
try:
    from urllib import unquote
    from urlparse import urlparse
except ImportError:
    from urllib.parse import unquote, urlparse


from gi import require_version
require_version('Gtk', '3.0')
require_version('Nautilus', '3.0')
from gi.repository import Gio, GObject, Gtk, Nautilus


TERMINAL = "tilix"
TILIX_KEYBINDINGS = "com.gexperts.Tilix.Keybindings"
GSETTINGS_OPEN_TERMINAL = "nautilus-open"
REMOTE_URI_SCHEME = ['ftp', 'sftp']
textdomain("tilix")
_ = gettext

def _checkdecode(s):
    """Decode string assuming utf encoding if it's bytes, else return unmodified"""
    return s.decode('utf-8') if isinstance(s, bytes) else s

def open_terminal_in_file(filename):
    if filename:
        call('{0} -w "{1}" &'.format(TERMINAL, filename), shell=True)
    else:
        call("{0} &".format(TERMINAL), shell=True)


class OpenTilixShortcutProvider(GObject.GObject,
                                Nautilus.LocationWidgetProvider):

    def __init__(self):
        source = Gio.SettingsSchemaSource.get_default()
        if source.lookup(TILIX_KEYBINDINGS, True):
            self._gsettings = Gio.Settings.new(TILIX_KEYBINDINGS)
            self._gsettings.connect("changed", self._bind_shortcut)
            self._create_accel_group()
        self._window = None
        self._uri = None

    def _create_accel_group(self):
        self._accel_group = Gtk.AccelGroup()
        shortcut = self._gsettings.get_string(GSETTINGS_OPEN_TERMINAL)
        key, mod = Gtk.accelerator_parse(shortcut)
        self._accel_group.connect(key, mod, Gtk.AccelFlags.VISIBLE,
                                  self._open_terminal)

    def _bind_shortcut(self, gsettings, key):
        if key == GSETTINGS_OPEN_TERMINAL:
            self._accel_group.disconnect(self._open_terminal)
            self._create_accel_group()

    def _open_terminal(self, *args):
        filename = unquote(self._uri[7:])
        open_terminal_in_file(filename)

    def get_widget(self, uri, window):
        self._uri = uri
        if self._window:
            self._window.remove_accel_group(self._accel_group)
        if self._gsettings:
            window.add_accel_group(self._accel_group)
        self._window = window
        return None


class OpenTilixExtension(GObject.GObject, Nautilus.MenuProvider):

    def _open_terminal(self, file_):
        if file_.get_uri_scheme() in REMOTE_URI_SCHEME:
            result = urlparse(file_.get_uri())
            if result.username:
                value = 'ssh -t {0}@{1}'.format(result.username,
                                                result.hostname)
            else:
                value = 'ssh -t {0}'.format(result.hostname)
            if result.port:
                value = "{0} -p {1}".format(value, result.port)
            if file_.is_directory():
                value = '{0} cd "{1}" ; $SHELL'.format(value, result.path)

            call('{0} -e "{1}" &'.format(TERMINAL, value), shell=True)
        else:
            filename = Gio.File.new_for_uri(file_.get_uri()).get_path()
            open_terminal_in_file(filename)

    def _menu_activate_cb(self, menu, file_):
        self._open_terminal(file_)

    def _menu_background_activate_cb(self, menu, file_):
        self._open_terminal(file_)

    def get_file_items(self, window, files):
        if len(files) != 1:
            return
        items = []
        file_ = files[0]

        if file_.is_directory():

            if file_.get_uri_scheme() in REMOTE_URI_SCHEME:
                uri = _checkdecode(file_.get_uri())
                item = Nautilus.MenuItem(name='NautilusPython::open_remote_item',
                                         label=_(u'Open Remote Tilix'),
                                         tip=_(u'Open Remote Tilix In {}').format(uri))
                item.connect('activate', self._menu_activate_cb, file_)
                items.append(item)

            filename = _checkdecode(file_.get_name())
            item = Nautilus.MenuItem(name='NautilusPython::open_file_item',
                                     label=_(u'Open In Tilix'),
                                     tip=_(u'Open Tilix In {}').format(filename))
            item.connect('activate', self._menu_activate_cb, file_)
            items.append(item)

        return items

    def get_background_items(self, window, file_):
        items = []
        if file_.get_uri_scheme() in REMOTE_URI_SCHEME:
            item = Nautilus.MenuItem(name='NautilusPython::open_bg_remote_item',
                                     label=_(u'Open Remote Tilix Here'),
                                     tip=_(u'Open Remote Tilix In This Directory'))
            item.connect('activate', self._menu_activate_cb, file_)
            items.append(item)

        item = Nautilus.MenuItem(name='NautilusPython::open_bg_file_item',
                                 label=_(u'Open Tilix Here'),
                                 tip=_(u'Open Tilix In This Directory'))
        item.connect('activate', self._menu_background_activate_cb, file_)
        items.append(item)
        return items

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