Add ComboBox control.

sugar/graphics/Makefile.am

@@ -5,6 +5,7 @@ sugar_PYTHON =			\
 	iconbutton.py          	\
 	canvasicon.py		\
 	color.py		\
+	combobox.py		\
 	font.py			\
 	frame.py		\
 	menu.py			\

sugar/graphics/combobox.py

@@ -0,0 +1,76 @@
+# Copyright (C) 2007, One Laptop Per Child
+#
+# This program 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 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+import sys
+
+import gobject
+import gtk
+
+class ComboBox(gtk.ComboBox):
+    __gtype_name__ = 'SugarComboBox'    
+
+    __gproperties__ = {
+        'value'    : (int, None, None,
+                      0, sys.maxint, 0,
+                      gobject.PARAM_READABLE)
+    }
+    def __init__(self):
+        gtk.ComboBox.__init__(self)
+
+        self._model = gtk.ListStore(gobject.TYPE_INT,
+                                    gobject.TYPE_STRING,
+                                    gobject.TYPE_STRING,
+                                    gobject.TYPE_BOOLEAN)
+        self.set_model(self._model)
+
+        renderer = gtk.CellRendererPixbuf()
+        self.pack_start(renderer, False)
+        self.add_attribute(renderer, 'icon-name', 2)
+
+        renderer = gtk.CellRendererText()
+        self.pack_start(renderer, True)
+        self.add_attribute(renderer, 'text', 1)
+
+        self.set_row_separator_func(self._is_separator)
+        self.connect('realize', self._realize_cb)
+
+    def do_get_property(self, pspec):
+        if pspec.name == 'value':
+             action_id, text, icon_name, is_separator = self.get_active_item()
+             return action_id
+        else:
+            return gtk.ComboBox.do_get_property(self, pspec)
+
+    def _realize_cb(self, widget, data=None):
+        if self.get_active() == -1:
+            self.set_active(0)
+
+    def append_item(self, action_id, text, icon_name=None):
+        self._model.append([action_id, text, icon_name, False])
+
+    def append_separator(self):
+        self._model.append([0, None, None, True])    
+
+    def get_active_item(self):
+        index = self.get_active()
+        if index == -1:
+            index = 0
+
+        row = self._model.iter_nth_child(None, index)
+        return self._model[row]
+
+    def _is_separator(self, model, row):
+        action_id, text, icon_name, is_separator = model[row]
+        return is_separator