horstmann.ch08_graphed2

Class AbstractEdge

java.lang.Object

horstmann.ch08_graphed2.AbstractEdge

All Implemented Interfaces:

Edge, java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

LineEdge

public abstract class AbstractEdge
extends java.lang.Object
implements Edge

A class that supplies convenience implementations for a number of methods in the Edge interface type.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private Node	end
private Node	start

Constructor Summary

Constructors

Constructor and Description
AbstractEdge()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
void	connect(Node s, Node e) Connects this edge to two nodes.
java.awt.geom.Rectangle2D	getBounds(java.awt.Graphics2D g2) Gets the smallest rectangle that bounds this edge.
java.awt.geom.Line2D	getConnectionPoints() Gets the points at which this edge is connected to its nodes.
Node	getEnd() Gets the ending node.
Node	getStart() Gets the starting node.

Methods inherited from class java.lang.Object

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

Methods inherited from interface horstmann.ch08_graphed2.Edge

contains, draw

Field Detail

start

private Node start

end

private Node end

Constructor Detail

AbstractEdge

public AbstractEdge()

Method Detail

clone

public java.lang.Object clone()

Specified by:

clone in interface Edge

Overrides:

clone in class java.lang.Object

connect

public void connect(Node s,
                    Node e)

Description copied from interface: Edge

Connects this edge to two nodes.

Specified by:

connect in interface Edge

Parameters:

s - the starting node

e - the ending node

getStart

public Node getStart()

Description copied from interface: Edge

Gets the starting node.

Specified by:

getStart in interface Edge

Returns:

the starting node

getEnd

public Node getEnd()

Description copied from interface: Edge

Gets the ending node.

Specified by:

getEnd in interface Edge

Returns:

the ending node

getBounds

public java.awt.geom.Rectangle2D getBounds(java.awt.Graphics2D g2)

Description copied from interface: Edge

Gets the smallest rectangle that bounds this edge. The bounding rectangle contains all labels.

Specified by:

getBounds in interface Edge

Returns:

the bounding rectangle

getConnectionPoints

public java.awt.geom.Line2D getConnectionPoints()

Description copied from interface: Edge

Gets the points at which this edge is connected to its nodes.

Specified by:

getConnectionPoints in interface Edge

Returns:

a line joining the two connection points