org.eclipse.jface.viewers

Class TreeNode

java.lang.Object

org.eclipse.jface.viewers.TreeNode

public class TreeNode
extends java.lang.Object

A simple data structure that is useful for implemented tree models. This can be returned by IStructuredContentProvider.getElements(Object). It allows simple delegation of methods from ITreeContentProvider such as ITreeContentProvider.getChildren(Object), ITreeContentProvider.getParent(Object) and ITreeContentProvider.hasChildren(Object)

Since:

3.2

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.Object	value The value contained in this node.

Constructor Summary

Constructors

Constructor and Description
TreeNode(java.lang.Object value) Constructs a new instance of TreeNode.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object object)
TreeNode[]	getChildren() Returns the child nodes.
TreeNode	getParent() Returns the parent node.
java.lang.Object	getValue() Returns the value held by this node.
boolean	hasChildren() Returns whether the tree has any children.
int	hashCode()
void	setChildren(TreeNode[] children) Sets the children for this node.
void	setParent(TreeNode parent) Sets the parent for this node.

Methods inherited from class java.lang.Object

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

Field Detail

value

protected java.lang.Object value

The value contained in this node. This value may be anything.

Constructor Detail

TreeNode

public TreeNode(java.lang.Object value)

Constructs a new instance of TreeNode.

Parameters:

value - The value held by this node; may be anything.

Method Detail

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

getChildren

public TreeNode[] getChildren()

Returns the child nodes. Empty arrays are converted to null before being returned.

Returns:

The child nodes; may be null, but never empty. There should be no null children in the array.

getParent

public TreeNode getParent()

Returns the parent node.

Returns:

The parent node; may be null if there are no parent nodes.

getValue

public java.lang.Object getValue()

Returns the value held by this node.

Returns:

The value; may be anything.

hasChildren

public boolean hasChildren()

Returns whether the tree has any children.

Returns:

true if its array of children is not null and is non-empty; false otherwise.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

setChildren

public void setChildren(TreeNode[] children)

Sets the children for this node.

Parameters:

children - The child nodes; may be null or empty. There should be no null children in the array.

setParent

public void setParent(TreeNode parent)

Sets the parent for this node.

Parameters:

parent - The parent node; may be null.