echopoint.tree
Class DefaultTreeModel

java.lang.Object
  nextapp.echo.extras.app.tree.AbstractTreeModel
      echopoint.tree.DefaultTreeModel

All Implemented Interfaces:

Serializable, TreeModel

public class DefaultTreeModel
extends AbstractTreeModel

A simple tree model that uses TreeNodes.

Since:

3.0.0b3

Version:

$Id: DefaultTreeModel.java 248 2009-10-19 14:20:53Z sptrakesh $

Author:

Brad Baker, Rakesh 2009-05-29

See Also:

Serialized Form

Field Summary

protected TreeNode

root Root of the tree.

Fields inherited from class nextapp.echo.extras.app.tree.AbstractTreeModel

listenerList

Constructor Summary

DefaultTreeModel(TreeNode root)
Creates a tree with the specified root node.

Method Summary

void	addChild(DefaultMutableTreeNode parent, DefaultMutableTreeNode child)
Object	getChild(Object parent, int index) Returns the child of parent at index index in the parent's child array.
int	getChildCount(Object parent) Returns the number of children of parent .
int	getColumnCount()
int	getIndexOfChild(Object parent, Object child) Returns the index of child in parent.
Object	getRoot() Returns the root of the tree.
Object	getValueAt(Object node, int column)
boolean	isLeaf(Object node) Returns whether the specified node is a leaf node.
void	removeChild(DefaultMutableTreeNode parent, DefaultMutableTreeNode child)

Methods inherited from class nextapp.echo.extras.app.tree.AbstractTreeModel

addTreeModelListener, fireTreeNodesChanged, fireTreeNodesInserted, fireTreeNodesRemoved, fireTreeStructureChanged, getColumnClass, getColumnName, removeTreeModelListener, valueForPathChanged

Methods inherited from class java.lang.Object

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

Field Detail

root

protected TreeNode root

Root of the tree.

Constructor Detail

DefaultTreeModel

public DefaultTreeModel(TreeNode root)

Creates a tree with the specified root node.

Parameters:

root - a TreeNode object that is the root of the tree

Method Detail

getChild

public Object getChild(Object parent,
                       int index)

Returns the child of parent at index index in the parent's child array. parent must be a node previously obtained from this data source. This should not return null if index is a valid index for parent (that is index >= 0 && index < getChildCount( parent )).

Parameters:

parent - a node in the tree, obtained from this data source

Returns:

the child of parent at index index

getChildCount

public int getChildCount(Object parent)

Returns the number of children of parent . Returns 0 if the node is a leaf or if it has no children. parent must be a node previously obtained from this data source.

Parameters:

parent - a node in the tree, obtained from this data source

Returns:

the number of children of the node parent

getColumnCount

public int getColumnCount()

getIndexOfChild

public int getIndexOfChild(Object parent,
                           Object child)

Returns the index of child in parent.

getRoot

public Object getRoot()

Returns the root of the tree. Returns null only if the tree has no nodes.

Returns:

the root of the tree

getValueAt

public Object getValueAt(Object node,
                         int column)

isLeaf

public boolean isLeaf(Object node)

Returns whether the specified node is a leaf node. The way the test is performed depends on the askAllowsChildren setting.

addChild

public void addChild(DefaultMutableTreeNode parent,
                     DefaultMutableTreeNode child)

removeChild

public void removeChild(DefaultMutableTreeNode parent,
                        DefaultMutableTreeNode child)