Package nz.ac.waikato.cms.gui.core

Class JListHelper

java.lang.Object

nz.ac.waikato.cms.gui.core.JListHelper

public class JListHelper
extends Object

A helper class for JList GUI elements with DefaultListModel or derived models.

Version:

$Revision: 4584 $

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

• JList
• DefaultListModel

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MOVE_DOWN	moves items down.
static final int	MOVE_UP	moves items up.

Constructor Summary

Constructors

Constructor	Description
JListHelper()

Method Summary

Modifier and Type	Method	Description
static boolean	canMoveDown(JList list)	checks whether the selected items can be moved down.
static boolean	canMoveUp(JList list)	checks whether the selected items can be moved up.
static void	moveBottom(JList list)	moves the selected items to the end.
static void	moveDown(JList list)	moves the selected item down by 1.
protected static void	moveItems(JList list, int moveby, int direction)	moves the selected items by a certain amount of items in a given direction.
static void	moveTop(JList list)	moves the selected items to the top.
static void	moveUp(JList list)	moves the selected items up by 1.

Methods inherited from class java.lang.Object

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

Field Details

MOVE_UP

public static final int MOVE_UP

moves items up.

See Also:

• Constant Field Values

MOVE_DOWN

public static final int MOVE_DOWN

moves items down.

See Also:

• Constant Field Values

Constructor Details

JListHelper

public JListHelper()

Method Details

moveItems

protected static void moveItems(JList list,
 int moveby,
 int direction)

moves the selected items by a certain amount of items in a given direction.

Parameters:

list - the JList to work on

moveby - the number of items to move by

direction - the direction to move in

See Also:

• MOVE_UP
• MOVE_DOWN

moveUp

public static void moveUp(JList list)

moves the selected items up by 1.

Parameters:

list - the JList to work on

moveDown

public static void moveDown(JList list)

moves the selected item down by 1.

Parameters:

list - the JList to work on

moveTop

public static void moveTop(JList list)

moves the selected items to the top.

Parameters:

list - the JList to work on

moveBottom

public static void moveBottom(JList list)

moves the selected items to the end.

Parameters:

list - the JList to work on

canMoveUp

public static boolean canMoveUp(JList list)

checks whether the selected items can be moved up.

Parameters:

list - the JList to work on

Returns:

true if the selected items can be moved

canMoveDown

public static boolean canMoveDown(JList list)

checks whether the selected items can be moved down.

Parameters:

list - the JList to work on

Returns:

true if the selected items can be moved