com.moneydance.awt
Class HashTreeModel<T>

java.lang.Object
  com.moneydance.awt.HashTreeModel<T>

All Implemented Interfaces:

javax.swing.tree.TreeModel

public class HashTreeModel<T>
extends java.lang.Object
implements javax.swing.tree.TreeModel

A HashTreeModel is an implementation of the Swing TreeModel backed by a HashMap. Any objects can be added as nodes or the class can be parameterized so that only nodes belonging to some type may be added (noting that TreeModel methods will still use Object). An object may only be inserted into the tree once as enforced by Object.equals(java.lang.Object) as this causes problems with the JTree.

Author:

Jay Detwiler

Constructor Summary

HashTreeModel(T root)
Create the HashTreeModel with the given object as root.

Method Summary

void	addChild(T parent, T child) Add a node to a parent.
void	addTreeModelListener(javax.swing.event.TreeModelListener l)
T	getChild(java.lang.Object parent, int index)
int	getChildCount(java.lang.Object parent)
int	getIndexOfChild(java.lang.Object parent, java.lang.Object child)
T	getRoot() Returns the root object.
boolean	isLeaf(java.lang.Object node)
boolean	isMember(java.lang.Object node) Return true if the given node is a member of the tree.
void	removeChildren(T node)
void	removeNode(T node) Remove a node from the tree.
void	removeTreeModelListener(javax.swing.event.TreeModelListener l)
void	valueForPathChanged(javax.swing.tree.TreePath path, java.lang.Object newValue)

Methods inherited from class java.lang.Object

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

Constructor Detail

HashTreeModel

public HashTreeModel(T root)

Create the HashTreeModel with the given object as root.

Parameters:

root - the root object

Method Detail

getRoot

public T getRoot()

Returns the root object.

Specified by:

getRoot in interface javax.swing.tree.TreeModel

Returns:

the root object.

addChild

public void addChild(T parent,
                     T child)

Add a node to a parent. To be valid, the parent must be a member and the child must not be a member of the tree.

Parameters:

parent - the node in the tree to add a new node to

child - a node to add to the tree

Throws:

java.lang.IllegalArgumentException - if the parent is not a member or the child already is a member of the tree

java.lang.NullPointerException - if either argument is null

removeNode

public void removeNode(T node)

Remove a node from the tree. This removes the node and any children. The node must be a member of the tree and not the root.

Parameters:

node - a node to remove

Throws:

java.lang.NullPointerException - if the node is null

java.lang.IllegalArgumentException - if the node is not a member or if the node is the root of the tree

removeChildren

public void removeChildren(T node)

isMember

public boolean isMember(java.lang.Object node)

Return true if the given node is a member of the tree.

Parameters:

node - a node to test

Returns:

true if the given node is a member of the tree.

getChild

public T getChild(java.lang.Object parent,
                  int index)

Specified by:

getChild in interface javax.swing.tree.TreeModel

getChildCount

public int getChildCount(java.lang.Object parent)

Specified by:

getChildCount in interface javax.swing.tree.TreeModel

isLeaf

public boolean isLeaf(java.lang.Object node)

Specified by:

isLeaf in interface javax.swing.tree.TreeModel

valueForPathChanged

public void valueForPathChanged(javax.swing.tree.TreePath path,
                                java.lang.Object newValue)

Specified by:

valueForPathChanged in interface javax.swing.tree.TreeModel

getIndexOfChild

public int getIndexOfChild(java.lang.Object parent,
                           java.lang.Object child)

Specified by:

getIndexOfChild in interface javax.swing.tree.TreeModel

addTreeModelListener

public void addTreeModelListener(javax.swing.event.TreeModelListener l)

Specified by:

addTreeModelListener in interface javax.swing.tree.TreeModel

removeTreeModelListener

public void removeTreeModelListener(javax.swing.event.TreeModelListener l)

Specified by:

removeTreeModelListener in interface javax.swing.tree.TreeModel