if ( propertyHandle != null && propertyHandle.isReadOnly( ) )
if ( propertyHandle != null && propertyHandle.isReadOnly( ) || propertyHandle == null )
	protected boolean isPropertyReadOnly( String propName )	{		boolean isReadOnly = false;		for ( int i = 0; i < elements.size( ); i++ )		{			PropertyHandle propertyHandle = ( (DesignElementHandle) elements					.get( i ) ).getPropertyHandle( propName );			if ( propertyHandle != null && propertyHandle.isReadOnly( ) )			{				isReadOnly = true;				break;			}		}		return isReadOnly;	}