Module org.jpo

Package org.jpo.datamodel

Class GroupNavigator

java.lang.Object

org.jpo.datamodel.NodeNavigator

org.jpo.datamodel.GroupNavigator

All Implemented Interfaces:

NodeNavigatorInterface

public class GroupNavigator
extends NodeNavigator

This class implements the NodeNavigator in the specific manner that is required for displaying the child nodes of a Group in the Thumbnail JScrollPane.

Constructor Summary

Constructors

Constructor	Description
GroupNavigator(SortableDefaultMutableTreeNode groupNode)

Method Summary

Modifier and Type	Method	Description
SortableDefaultMutableTreeNode	getGroupNode()	Returns the group node of the Navigator
SortableDefaultMutableTreeNode	getNode(int index)	This method returns the SortableDefaultMutableTreeNode node for the indicated position in the group.
int	getNumberOfNodes()	On a group we return the number of children in the group.
String	getTitle()	returns the name of the Group being displayed

Methods inherited from class org.jpo.datamodel.NodeNavigator

addNodeNavigatorListener, notifyNodeNavigatorListeners, removeNodeNavigatorListener

Methods inherited from class java.lang.Object

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

Constructor Details

GroupNavigator

public GroupNavigator(SortableDefaultMutableTreeNode groupNode)

Method Details

getTitle

public String getTitle()

returns the name of the Group being displayed

Returns:

the description of the group

getGroupNode

public SortableDefaultMutableTreeNode getGroupNode()

Returns the group node of the Navigator

Returns:

the group node

getNumberOfNodes

public int getNumberOfNodes()

On a group we return the number of children in the group.

Returns:

the number of child nodes

getNode

public SortableDefaultMutableTreeNode getNode(int index)

This method returns the SortableDefaultMutableTreeNode node for the indicated position in the group. If the request is for an index larger than the number of nodes null is returned so that clients can show something appropriate.

Parameters:

index - The component index that is to be returned.

Returns:

the child node at the index