com.sas.swing.visuals
Class BasicCheckBoxListUI.IncrementLeadSelectionAction

com.sas.swing.visuals.BasicCheckBoxListUI.IncrementLeadSelectionAction

All Implemented Interfaces:

java.awt.event.ActionListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, javax.swing.Action

Direct Known Subclasses:

BasicCheckBoxListUI.EndAction, BasicCheckBoxListUI.HomeAction, BasicCheckBoxListUI.PageDownAction, BasicCheckBoxListUI.PageUpAction, BasicTriStateCheckBoxListUI.IncrementLeadSelectionAction

Enclosing class:

BasicCheckBoxListUI

public static class BasicCheckBoxListUI.IncrementLeadSelectionAction

Action to increment the selection in the list up/down a row at a type. This also has the option to extend the selection, or only move the lead.

See Also:

Serialized Form

Field Summary

protected int	amount Amount to offset, subclasses will define what this means.
protected int	selectionType Either CHANGE_SELECTION or MOVE_TO_SELECTION.

Constructor Summary

IncrementLeadSelectionAction(java.lang.String name, int type)

IncrementLeadSelectionAction(java.lang.String name, int type, int amount)

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e) Invokes getNextIndex to determine the next index to select.
protected void	ensureIndexIsVisible(javax.swing.JList list, int index) Ensures the particular index is visible.
protected int	getNextIndex(javax.swing.JList list) Returns the next index to select.

Field Detail

amount

protected int amount

Amount to offset, subclasses will define what this means.

selectionType

protected int selectionType

Either CHANGE_SELECTION or MOVE_TO_SELECTION.

Constructor Detail

IncrementLeadSelectionAction

public IncrementLeadSelectionAction(java.lang.String name,
                                    int type)

IncrementLeadSelectionAction

public IncrementLeadSelectionAction(java.lang.String name,
                                    int type,
                                    int amount)

Method Detail

getNextIndex

protected int getNextIndex(javax.swing.JList list)

Returns the next index to select. This is based on the lead selected index and the amount ivar.

ensureIndexIsVisible

protected void ensureIndexIsVisible(javax.swing.JList list,
                                    int index)

Ensures the particular index is visible. This simply forwards the method to list.

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Invokes getNextIndex to determine the next index to select. If the index is valid (not -1 and < size of the model), this will either: move the selection to the new index and change its value if the selectionType == CHANGE_SELECTION, or move the selection to the new index if selectionType == MOVE_TO_SELECTION.