[gnome-tweak-tool] widgets: Add optional desc property to GSettingsSwitchTweak

[Jeremy Bicha <jbicha src gnome org>]

commit d960b5127d21e1a0ee61a4cd3a4ae62fe7365607
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sun May 28 12:03:30 2017 -0400

    widgets: Add optional desc property to GSettingsSwitchTweak
    
    This allows for a "subtitle" to explain Switches
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783176

 gtweak/widgets.py |   30 +++++++++++++++++++++++++++---
 1 files changed, 27 insertions(+), 3 deletions(-)
---
diff --git a/gtweak/widgets.py b/gtweak/widgets.py
index 4dbc27b..8422880 100644
--- a/gtweak/widgets.py
+++ b/gtweak/widgets.py
@@ -275,14 +275,38 @@ class GSettingsSwitchTweak(Gtk.Box, _GSettingsTweak, _DependableMixin):
         w = Gtk.Switch()
         self.settings.bind(key_name, w, "active", Gio.SettingsBindFlags.DEFAULT)
 
-        build_label_beside_widget(name, w, hbox=self)
-        self.widget_for_size_group = None
-
         self.add_dependency_on_tweak(
                 options.get("depends_on"),
                 options.get("depends_how")
         )
 
+        vbox1 = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
+        vbox1.props.spacing = UI_BOX_SPACING
+        lbl = Gtk.Label(label=name)
+        lbl.props.ellipsize = Pango.EllipsizeMode.END
+        lbl.props.xalign = 0.0
+        vbox1.pack_start(lbl, True, True, 0)
+
+        if options.get("desc"):
+            description = options.get("desc")
+            lbl_desc = Gtk.Label()
+            lbl_desc.props.xalign = 0.0
+            lbl_desc.set_line_wrap(True)
+            lbl_desc.get_style_context().add_class("dim-label")
+            lbl_desc.set_markup("<span size='small'>"+GLib.markup_escape_text(description)+"</span>")
+            vbox1.pack_start(lbl_desc, True, True, 0)
+
+        vbox2 = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
+        vbox2_upper = Gtk.Box()
+        vbox2_lower = Gtk.Box()
+        vbox2.pack_start(vbox2_upper, True, True, 0)
+        vbox2.pack_start(w, False, False, 0)
+        vbox2.pack_start(vbox2_lower, True, True, 0)
+
+        self.pack_start(vbox1, True, True, 0)
+        self.pack_start(vbox2, False, False, 0)
+        self.widget_for_size_group = None
+
 class GSettingsFontButtonTweak(Gtk.Box, _GSettingsTweak, _DependableMixin):
     def __init__(self, name, schema_name, key_name, **options):
         Gtk.Box.__init__(self, orientation=Gtk.Orientation.HORIZONTAL)