[pygobject] Gtk overrides: Add TreePath.__getitem__()

[Martin Pitt <martinpitt src gnome org>]

commit 0d729c1534c7f3226b492f549d8f6ad3bb3ac8b7
Author: Simon Feltman <s feltman gmail com>
Date:   Fri Jul 20 19:55:46 2012 -0700

    Gtk overrides: Add TreePath.__getitem__()
    
    Use pythons sub-script operator for indexing into TreePaths
    as was the case in PyGtk. Also changed __iter__ to use
    TreePath.get_indices as opposed to formatting and re-parsing
    a string for getting an index list.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=680353

 gi/overrides/Gtk.py     |    5 ++++-
 tests/test_overrides.py |    4 ++++
 2 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/gi/overrides/Gtk.py b/gi/overrides/Gtk.py
index 49c2747..68d0f41 100644
--- a/gi/overrides/Gtk.py
+++ b/gi/overrides/Gtk.py
@@ -1227,11 +1227,14 @@ class TreePath(Gtk.TreePath):
         return other is None or self.compare(other) >= 0
 
     def __iter__(self):
-        return (int(part) for part in str(self).split(':'))
+        return iter(self.get_indices())
 
     def __len__(self):
         return self.get_depth()
 
+    def __getitem__(self, index):
+        return self.get_indices()[index]
+
 TreePath = override(TreePath)
 __all__.append('TreePath')
 
diff --git a/tests/test_overrides.py b/tests/test_overrides.py
index 73b17a5..9438add 100644
--- a/tests/test_overrides.py
+++ b/tests/test_overrides.py
@@ -1392,6 +1392,10 @@ class TestGtk(unittest.TestCase):
         self.assertFalse(p1 <= None)
 
         self.assertEqual(tuple(p1), (1, 2, 3))
+        self.assertEqual(p1[0], 1)
+        self.assertEqual(p1[1], 2)
+        self.assertEqual(p1[2], 3)
+        self.assertRaises(IndexError, p1.__getitem__, 3)
 
     def test_tree_model(self):
         tree_store = Gtk.TreeStore(int, str)