void GraphComponent::addChildInternal( GraphComponentPtr child )
{
child->parentChanging( this );
GraphComponent *previousParent = child->m_parent;
if( previousParent )
{
// remove the child from the previous parent, but don't emit parentChangedSignal.
// this prevents a parent changed signal with new parent 0 followed by a parent
// changed signal with the new parent.
previousParent->removeChildInternal( child, false );
}
m_children.push_back( child );
child->m_parent = this;
child->setName( child->m_name.value() ); // to force uniqueness
childAddedSignal()( this, child.get() );
child->parentChangedSignal()( child.get(), previousParent );
}
void GraphComponent::setChild( const IECore::InternedString &name, GraphComponentPtr child )
{
GraphComponentPtr existingChild = getChild<GraphComponent>( name );
if( existingChild && existingChild == child )
{
return;
}
throwIfChildRejected( child.get() );
if( existingChild )
{
removeChild( existingChild );
}
child->setName( name );
addChild( child );
}
void GraphComponent::addChildInternal( GraphComponentPtr child, size_t index )
{
child->parentChanging( this );
GraphComponent *previousParent = child->m_parent;
if( previousParent )
{
// remove the child from the previous parent, but don't emit parentChangedSignal.
// this prevents a parent changed signal with new parent null followed by a parent
// changed signal with the new parent.
previousParent->removeChildInternal( child, false );
}
m_children.insert( m_children.begin() + min( index, m_children.size() ), child );
child->m_parent = this;
child->setName( child->m_name.value() ); // to force uniqueness
Signals::emitLazily( m_signals.get(), &Signals::childAddedSignal, this, child.get() );
child->parentChanged( previousParent );
Signals::emitLazily( child->m_signals.get(), &Signals::parentChangedSignal, child.get(), previousParent );
}
