-void Actor::Insert( unsigned int index, Actor& child )
-{
- DALI_ASSERT_ALWAYS( this != &child && "Cannot add actor to itself" );
- DALI_ASSERT_ALWAYS( !child.IsRoot() && "Cannot add root actor" );
-
- if( !mChildren )
- {
- mChildren = new ActorContainer;
- }
-
- Actor* const oldParent( child.mParent );
-
- // since an explicit position has been given, always insert, even if already a child
- if( oldParent )
- {
- oldParent->Remove( child ); // This causes OnChildRemove callback
-
- // Old parent may need to readjust to missing child
- if( oldParent->RelayoutDependentOnChildren() )
- {
- oldParent->RelayoutRequest();
- }
- }
-
- // Guard against Add() during previous OnChildRemove callback
- if( !child.mParent )
- {
- // Do this first, since user callbacks from within SetParent() may need to remove child
- if( index < GetChildCount() )
- {
- ActorIter it = mChildren->begin();
- std::advance( it, index );
- mChildren->insert( it, ActorPtr( &child ) );
- }
- else
- {
- mChildren->push_back( ActorPtr( &child ) );
- }
- // SetParent asserts that child can be added
- child.SetParent( this, index );
-
- // Notification for derived classes
- OnChildAdd( child );
-
- // Only put in a relayout request if there is a suitable dependency
- if( RelayoutDependentOnChildren() )
- {
- RelayoutRequest();
- }
-
- if( child.RelayoutDependentOnParent() )
- {
- child.RelayoutRequest();
- }
- }
-}
-