org.jgraph.graph
Class DefaultEdge

java.lang.Object
  javax.swing.tree.DefaultMutableTreeNode
      org.jgraph.graph.DefaultGraphCell
          org.jgraph.graph.DefaultEdge

All Implemented Interfaces:

Serializable, Cloneable, MutableTreeNode, TreeNode, Edge, GraphCell

public class DefaultEdge
extends DefaultGraphCell
implements Edge

A simple implementation for an edge.

Version:

1.0 1/1/02

Author:

Gaudenz Alder

See Also:

Serialized Form

Nested Class Summary

static class

DefaultEdge.DefaultRouting

Nested classes/interfaces inherited from class org.jgraph.graph.DefaultGraphCell

DefaultGraphCell.ValueChangeHandler

Nested classes/interfaces inherited from interface org.jgraph.graph.Edge

Edge.Routing

Field Summary

protected static int	center
protected static Point	defaultLabel
static ArrayList	defaultPoints
protected Object	source Source and target of the edge.
protected Object	target Source and target of the edge.

Fields inherited from class org.jgraph.graph.DefaultGraphCell

attributes, defaultBounds

Fields inherited from class javax.swing.tree.DefaultMutableTreeNode

allowsChildren, children, EMPTY_ENUMERATION, parent, userObject

Constructor Summary

DefaultEdge()
Constructs an empty edge.

DefaultEdge(Object userObject)
Constructs an edge that holds a reference to the specified user object.

DefaultEdge(Object userObject, boolean allowsChildren)
Constructs an edge that holds a reference to the specified user object and sets default values for points and the label position.

Method Summary

Map	changeAttributes(Map change) Override parent method to ensure non-null points.
Object	clone() Create a clone of the cell.
Object	getSource() Returns the source of the edge.
Object	getTarget() Returns the target of the edge.
void	setSource(Object port) Sets the source of the edge.
void	setTarget(Object port) Returns the target of edge.

Methods inherited from class org.jgraph.graph.DefaultGraphCell

cloneUserObject, getAttributes, getChildren, setAttributes, setUserObject

Methods inherited from class javax.swing.tree.DefaultMutableTreeNode

add, breadthFirstEnumeration, children, depthFirstEnumeration, getAllowsChildren, getChildAfter, getChildAt, getChildBefore, getChildCount, getDepth, getFirstChild, getFirstLeaf, getIndex, getLastChild, getLastLeaf, getLeafCount, getLevel, getNextLeaf, getNextNode, getNextSibling, getParent, getPath, getPathToRoot, getPreviousLeaf, getPreviousNode, getPreviousSibling, getRoot, getSharedAncestor, getSiblingCount, getUserObject, getUserObjectPath, insert, isLeaf, isNodeAncestor, isNodeChild, isNodeDescendant, isNodeRelated, isNodeSibling, isRoot, pathFromAncestorEnumeration, postorderEnumeration, preorderEnumeration, remove, remove, removeAllChildren, removeFromParent, setAllowsChildren, setParent, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jgraph.graph.GraphCell

getAttributes, setAttributes

Field Detail

center

protected static final int center

See Also:

Constant Field Values

defaultLabel

protected static final Point defaultLabel

defaultPoints

public static final ArrayList defaultPoints

source

protected Object source

Source and target of the edge.

target

protected Object target

Source and target of the edge.

Constructor Detail

DefaultEdge

public DefaultEdge()

Constructs an empty edge.

DefaultEdge

public DefaultEdge(Object userObject)

Constructs an edge that holds a reference to the specified user object.

Parameters:

userObject - reference to the user object

DefaultEdge

public DefaultEdge(Object userObject,
                   boolean allowsChildren)

Constructs an edge that holds a reference to the specified user object and sets default values for points and the label position.

Parameters:

userObject - reference to the user object

Method Detail

changeAttributes

public Map changeAttributes(Map change)

Override parent method to ensure non-null points.

Specified by:

changeAttributes in interface GraphCell

Overrides:

changeAttributes in class DefaultGraphCell

getSource

public Object getSource()

Returns the source of the edge.

Specified by:

getSource in interface Edge

getTarget

public Object getTarget()

Returns the target of the edge.

Specified by:

getTarget in interface Edge

setSource

public void setSource(Object port)

Sets the source of the edge.

Specified by:

setSource in interface Edge

setTarget

public void setTarget(Object port)

Returns the target of edge.

Specified by:

setTarget in interface Edge

clone

public Object clone()

Create a clone of the cell. The cloning of the user object is deferred to the cloneUserObject() method.

Overrides:

clone in class DefaultGraphCell

Returns:

Object a clone of this object.