LayoutListenerSupport can handle the (un-)registration of layout
event listeners (IContextListener, IGraphStructureListener,
ILayoutListener, and IPruningListener) and firing of events.LayoutListenerSupport for the given
ILayoutContext.LayoutProperties contains all properties which can be accessed on
ILayoutContext, IConnectionLayout, INodeLayout, and
ISubgraphLayout, their default values, as well as static accessor
methods for those properties.Copyright (c) 2014 itemis AG and others. All rights reserved.