From a23f1794d00ed1d78e16859c800b66cb87555796 Mon Sep 17 00:00:00 2001
From: Cole Robinson <crobinso@redhat.com>
Date: Fri, 20 Sep 2013 10:47:36 -0400
Subject: guest stuff

---
 virtinst/xmlbuilder.py | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

(limited to 'virtinst/xmlbuilder.py')

diff --git a/virtinst/xmlbuilder.py b/virtinst/xmlbuilder.py
index 7eb9834a..50e1524f 100644
--- a/virtinst/xmlbuilder.py
+++ b/virtinst/xmlbuilder.py
@@ -293,8 +293,23 @@ class XMLChildProperty(property):
             for obj in self._get(xmlbuilder)[:]:
                 xmlbuilder._remove_child(obj)
 
-    def append(self, xmlbuilder, obj):
-        self._get(xmlbuilder).append(obj)
+    def append(self, xmlbuilder, newobj):
+        # Keep the list ordered by the order of passed in child classes
+        objlist = self._get(xmlbuilder)
+        if len(self.child_classes) == 1:
+            objlist.append(newobj)
+            return
+
+        idx = 0
+        for idx in range(len(objlist)):
+            obj = objlist[idx]
+            if (obj.__class__ not in self.child_classes or
+                (self.child_classes.index(newobj.__class__) <
+                 self.child_classes.index(obj.__class__))):
+                break
+            idx += 1
+
+        objlist.insert(idx, newobj)
     def remove(self, xmlbuilder, obj):
         self._get(xmlbuilder).remove(obj)
     def set(self, xmlbuilder, obj):
-- 
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