[meld] ui.statusbar: Bind button label to active highlighting language

[Kai Willadsen <kaiw src gnome org>]

commit e0f6cb916ba121e3c6ff13826a63581b67af11d9
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sat Feb 7 09:49:45 2015 +1000

    ui.statusbar: Bind button label to active highlighting language

 meld/ui/statusbar.py |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/meld/ui/statusbar.py b/meld/ui/statusbar.py
index a538895..6ed7f89 100644
--- a/meld/ui/statusbar.py
+++ b/meld/ui/statusbar.py
@@ -80,8 +80,15 @@ class MeldStatusBar(Gtk.Statusbar):
         pop.set_position(Gtk.PositionType.TOP)
         pop.add(selector)
 
+        def get_language_label(binding, language, *args):
+            if not language:
+                return _("Plain Text")
+            return language.get_name()
+
         button = Gtk.MenuButton()
-        button.set_label("Foo")
+        self.bind_property(
+            'source-language', button, 'label', GObject.BindingFlags.DEFAULT,
+            get_language_label)
         button.set_popover(pop)
         button.show()