[gnome-tweak-tool] Add XKB options to Typing group

[Rui Matos <rtcm src gnome org>]

commit ce3063f5620bb060926597eb8617dabdabd9bc90
Author: Rui Matos <tiagomatos gmail com>
Date:   Tue Sep 25 22:35:11 2012 +0200

    Add XKB options to Typing group
    
    Thanks to John Stowers for review and making the code be idiomatic
    python.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=678171

 gtweak/tweaks/tweak_typing.py |  125 ++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 123 insertions(+), 2 deletions(-)
---
diff --git a/gtweak/tweaks/tweak_typing.py b/gtweak/tweaks/tweak_typing.py
index d8d98bf..bdf028e 100644
--- a/gtweak/tweaks/tweak_typing.py
+++ b/gtweak/tweaks/tweak_typing.py
@@ -1,5 +1,125 @@
-from gtweak.tweakmodel import TWEAK_GROUP_TYPING
-from gtweak.widgets import GSettingsComboEnumTweak
+# This file is part of gnome-tweak-tool.
+# Copyright (c) 2012 Red Hat, Inc.
+#
+# gnome-tweak-tool 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 3 of the License, or
+# (at your option) any later version.
+#
+# gnome-tweak-tool 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 gnome-tweak-tool.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Authors:
+#       Rui Matos
+
+from gi.repository import Pango, Gtk, GnomeDesktop
+
+from gtweak.tweakmodel import Tweak, TweakGroup, TWEAK_GROUP_TYPING
+from gtweak.widgets import GSettingsComboEnumTweak, build_label_beside_widget
+from gtweak.gsettings import GSettingsSetting, GSettingsMissingError, GSettingsFakeSetting
+
+class _XkbOption(Tweak):
+    def __init__(self, group_id, parent_settings, xkb_info, **options):
+        Tweak.__init__(self, group_id, "", **options) # FIXME: should be the id's description
+
+        self._group_id = group_id
+        self._parent_settings = parent_settings
+        self._xkb_info = xkb_info
+        self._value = None
+        self._possible_values = []
+
+        model_values = [(None, _("Disabled"))]
+        for option_id in self._xkb_info.get_options_for_group(group_id):
+            desc = self._xkb_info.description_for_option(group_id, option_id)
+            model_values.append((option_id, desc))
+            self._possible_values.append(option_id)
+
+        store = Gtk.ListStore(str, str)
+        store.set_sort_column_id(0, Gtk.SortType.ASCENDING)
+        for (val, name) in model_values:
+            store.append((val, name))
+
+        self._combo = Gtk.ComboBox(model = store)
+        renderer = Gtk.CellRendererText()
+        renderer.props.ellipsize = Pango.EllipsizeMode.END
+        renderer.props.max_width_chars = 40
+        self._combo.pack_start(renderer, True)
+        self._combo.add_attribute(renderer, "text", 1)
+        self._combo_changed_handler_id = self._combo.connect("changed", self._on_combo_changed)
+
+        self.widget = build_label_beside_widget(self.name, self._combo)
+        self.widget_for_size_group = self._combo
+
+        self.reload()
+
+    def reload(self):
+        for v in self._parent_settings.get_strv(TypingTweakGroup.XKB_GSETTINGS_NAME):
+            if (v in self._possible_values):
+                self._value = v
+                self._update_combo()
+                return
+
+        self._value = None
+        self._update_combo()
+
+    def _update_combo(self):
+        model = self._combo.get_model()
+        for row in model:
+            if self._value == row[0]:
+                self._combo.disconnect(self._combo_changed_handler_id)
+                self._combo.set_active_iter(row.iter)
+                self._combo_changed_handler_id = self._combo.connect("changed", self._on_combo_changed)
+                break
+
+    def _on_combo_changed(self, combo):
+        new_value = combo.get_model().get_value(combo.get_active_iter(), 0)
+
+        if not new_value:
+            if self._value:
+                self._parent_settings.setting_remove_from_list(TypingTweakGroup.XKB_GSETTINGS_NAME, self._value)
+        else:
+            if self._value:
+                self._parent_settings.setting_remove_from_list(TypingTweakGroup.XKB_GSETTINGS_NAME, self._value)
+            self._parent_settings.setting_add_to_list(TypingTweakGroup.XKB_GSETTINGS_NAME, new_value)
+
+class TypingTweakGroup(TweakGroup):
+
+    XKB_GSETTINGS_NAME = "xkb-options"
+    XKB_OPTIONS = ("ctrl","grp_led","keypad","kpdl","caps","altwin","compat","eurosign",
+                   "lv5","nbsp","japan","esperanto","terminate")
+
+    def __init__(self):
+        TweakGroup.__init__(self, TWEAK_GROUP_TYPING)
+
+        self._option_objects = []
+
+        try:
+            self._kbdsettings = GSettingsSetting("org.gnome.desktop.input-sources")
+            self._kbdsettings.connect("changed::"+self.XKB_GSETTINGS_NAME, self._on_changed)
+        except GSettingsMissingError:
+            self._kbdsettings = GSettingsFakeSetting()
+
+        self._xkb_info = GnomeDesktop.XkbInfo()
+
+        for opt in self.XKB_OPTIONS:
+            self._option_objects.append(
+                    _XkbOption(opt, self._kbdsettings, self._xkb_info)
+            )
+
+        self.set_tweaks(*self._option_objects)
+
+    def _on_changed(self, *args):
+        for obj in self._option_objects:
+            obj.reload()
+
+TWEAK_GROUPS = (
+    TypingTweakGroup(),
+)
 
 TWEAKS = (
     GSettingsComboEnumTweak("org.gnome.settings-daemon.peripherals.keyboard",
@@ -7,3 +127,4 @@ TWEAKS = (
                             schema_filename="org.gnome.settings-daemon.peripherals.gschema.xml",
                             group_name=TWEAK_GROUP_TYPING),
 )
+