tizen_policy: allow null for parent parameter in set_parent_with_below

If parent parameter is null, then child removes the parent-child relationship.

Change-Id: I542f7a3053ccda53dfd8ccc019f42262b32ed861

diff --git a/protocol/tizen/tizen-extension.xml b/protocol/tizen/tizen-extension.xml
index 5dbc7ed..0b5957a 100644 (file)
--- a/protocol/tizen/tizen-extension.xml
+++ b/protocol/tizen/tizen-extension.xml
@@ -371,9 +371,10 @@
     <request name="set_parent_with_below" since="9">
       <description summary="set parent and place under the parent">
          This makes a relationship between parent and child. A child is always placed under a parent.
+         Setting a null parent for a child window removes any parent-child relationship for the child.
       </description>
       <arg name="child" type="object" interface="wl_surface" />
-      <arg name="parent" type="object" interface="wl_surface" />
+      <arg name="parent" type="object" interface="wl_surface" allow-null="true"/>
     </request>
   </interface>