diva.graph.toolbox

Class TypedNodeRenderer

java.lang.Object

diva.graph.toolbox.TypedNodeRenderer

All Implemented Interfaces:

NodeRenderer

public class TypedNodeRenderer
extends java.lang.Object
implements NodeRenderer

A NodeRenderer implementation which allows a user to add different specialized node renderers which are called selectively, based on the type of the user object that is contained in the node that is being rendered.

Version:

$Id$

Author:

Michael Shilman

Pt.AcceptedRating:

Red

Constructor Summary

Constructors

Constructor and Description
TypedNodeRenderer(GraphController controller, NodeRenderer defaultRenderer) A typed node renderer with the given node renderer as its default (i.e. how to render a node if it has a type that is not understood by this renderer).

Method Summary

Modifier and Type	Method and Description
void	addTypedRenderer(java.lang.Class c, NodeRenderer r) Add a renderer which is invoked when the rendered node's semantic object is an instance of the given class.
void	removeTypedRenderer(java.lang.Class c) Remove a typed renderer.
Figure	render(java.lang.Object node) Return the rendered visual representation of this node by looking up the class of its semantic object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TypedNodeRenderer

public TypedNodeRenderer(GraphController controller,
                         NodeRenderer defaultRenderer)

A typed node renderer with the given node renderer as its default (i.e. how to render a node if it has a type that is not understood by this renderer).

Method Detail

addTypedRenderer

public void addTypedRenderer(java.lang.Class c,
                             NodeRenderer r)

Add a renderer which is invoked when the rendered node's semantic object is an instance of the given class.

removeTypedRenderer

public void removeTypedRenderer(java.lang.Class c)

Remove a typed renderer.

See Also:

addTypedRenderer(Class,NodeRenderer)

render

public Figure render(java.lang.Object node)

Return the rendered visual representation of this node by looking up the class of its semantic object.

Specified by:

render in interface NodeRenderer

Parameters:

node - The node to render.

Returns:

The persistent object that is drawn on the screen.