org.openide.nodes
Interface Index

All Superinterfaces:

Node.Cookie

All Known Implementing Classes:

Index.Support, Index.ArrayChildren

public interface Index

extends Node.Cookie

Index cookie providing operations useful for reordering child nodes. IndexedNode is the common implementation.

Inner Class Summary

static class	Index.ArrayChildren Reorderable children list stored in an array.
static class	Index.KeysChildren Implementation of index interface that operates on an list of objects that are presented by given nodes.
static class	Index.Support A support class implementing some methods of the Index cookie.

Method Summary

void	addChangeListener(ChangeListener chl) Add a new listener to the listener list.
void	exchange(int x, int y) Exchange two elements.
Node[]	getNodes() Get the child nodes.
int	getNodesCount() Get the number of nodes.
int	indexOf(Node node) Get the index of a given node.
void	move(int x, int y) Move the element at the x-th position to the y-th position.
void	moveDown(int x) Move an element down.
void	moveUp(int x) Move an element up.
void	removeChangeListener(ChangeListener chl) Remove a listener from the listener list.
void	reorder() Invoke a dialog for reordering the children.
void	reorder(int[] perm) Reorder all children with a given permutation.

Method Detail

getNodesCount

public int getNodesCount()

Get the number of nodes.

Returns:

the count

getNodes

public Node[] getNodes()

Get the child nodes.

Returns:

array of nodes that can be sorted by this index

indexOf

public int indexOf(Node node)

Get the index of a given node.

Parameters:

node - node to find index of

Returns:

index of the node, or -1 if no such node was found

reorder

public void reorder()

Invoke a dialog for reordering the children.

reorder

public void reorder(int[] perm)

Reorder all children with a given permutation.

Parameters:

perm - permutation with the length of current nodes

Throws:

IllegalArgumentException - if the permutation is not valid

move

public void move(int x,
                 int y)

Move the element at the x-th position to the y-th position. All elements after the y-th position are moved down.

Parameters:

x - the position to remove the element from

y - the position to insert the element to

Throws:

IndexOutOfBoundsException - if an index is out of bounds

exchange

public void exchange(int x,
                     int y)

Exchange two elements.

Parameters:

x - position of the first element

y - position of the second element

Throws:

IndexOutOfBoundsException - if an index is out of bounds

moveUp

public void moveUp(int x)

Move an element up.

Parameters:

x - index of element to move up

Throws:

IndexOutOfBoundsException - if an index is out of bounds

moveDown

public void moveDown(int x)

Move an element down.

Parameters:

x - index of element to move down

Throws:

IndexOutOfBoundsException - if an index is out of bounds

addChangeListener

public void addChangeListener(ChangeListener chl)

Add a new listener to the listener list. The listener will be notified of any change in the order of the nodes.

Parameters:

chl - new listener

removeChangeListener

public void removeChangeListener(ChangeListener chl)

Remove a listener from the listener list.

Parameters:

chl - listener to remove