From 57c0be73cd1148206730936ae9f48468fda8b264 Mon Sep 17 00:00:00 2001
From: Emmanuele Bassi <ebassi@openedhand.com>
Date: Mon, 13 Aug 2007 17:00:47 +0000
Subject: [PATCH] Implement ClutterContainer::find_child_by_id() in ClutterBox

Iterate (recursively) on the children of a box to find the one with the
given unique id.
---
 clutter/clutter-box.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/clutter/clutter-box.c b/clutter/clutter-box.c
index 937728cda..7b9648982 100644
--- a/clutter/clutter-box.c
+++ b/clutter/clutter-box.c
@@ -126,12 +126,47 @@ clutter_box_foreach (ClutterContainer *container,
     }
 }
 
+static ClutterActor *
+clutter_box_find_child_by_id (ClutterContainer *container,
+                              guint             child_id)
+{
+  ClutterBox *self = CLUTTER_BOX (container);
+  ClutterActor *actor = NULL;
+  GList *l;
+
+  if (clutter_actor_get_id (CLUTTER_ACTOR (self)) == child_id)
+    return CLUTTER_ACTOR (self);
+
+  for (l = self->children; l; l = l->next)
+    {
+      ClutterBoxChild *child = l->data;
+
+      if (clutter_actor_get_id (child->actor) == child_id)
+        {
+          actor = child->actor;
+          break;
+        }
+
+      if (CLUTTER_IS_CONTAINER (child->actor))
+        {
+          ClutterContainer *c = CLUTTER_CONTAINER (child->actor);
+
+          actor = clutter_container_find_child_by_id (c, child_id);
+          if (actor)
+            break;
+	}
+    }
+
+  return actor;
+}
+
 static void
 clutter_container_iface_init (ClutterContainerIface *iface)
 {
   iface->add = clutter_box_add;
   iface->remove = clutter_box_remove;
   iface->foreach = clutter_box_foreach;
+  iface->find_child_by_id = clutter_box_find_child_by_id;
 }
 
 static void