org.jfree.ui

Class JTextObserver

java.lang.Object

org.jfree.ui.JTextObserver

All Implemented Interfaces:

java.awt.event.FocusListener, java.util.EventListener

public final class JTextObserver
extends java.lang.Object
implements java.awt.event.FocusListener

An observer that selects all the text when a field gains the focus.

Field Summary

Fields

Modifier and Type	Field and Description
private static JTextObserver	singleton The singleton instance.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	JTextObserver() Creates a new instance.

Method Summary

Modifier and Type	Method and Description
static void	addTextComponent(javax.swing.text.JTextComponent t) Adds this instance as a listener for the specified text component.
void	focusGained(java.awt.event.FocusEvent e) Selects all the text when a field gains the focus.
void	focusLost(java.awt.event.FocusEvent e) Deselects the text when a field loses the focus.
static JTextObserver	getInstance() Returns the single instance.
static void	removeTextComponent(javax.swing.text.JTextComponent t) Removes this instance as a listener for the specified text component.

Methods inherited from class java.lang.Object

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

Field Detail

singleton

private static JTextObserver singleton

The singleton instance.

Constructor Detail

JTextObserver

private JTextObserver()

Creates a new instance.

Method Detail

getInstance

public static JTextObserver getInstance()

Returns the single instance.

Returns:

The single instance.

focusGained

public void focusGained(java.awt.event.FocusEvent e)

Selects all the text when a field gains the focus.

Specified by:

focusGained in interface java.awt.event.FocusListener

Parameters:

e - the focus event.

focusLost

public void focusLost(java.awt.event.FocusEvent e)

Deselects the text when a field loses the focus.

Specified by:

focusLost in interface java.awt.event.FocusListener

Parameters:

e - the event.

addTextComponent

public static void addTextComponent(javax.swing.text.JTextComponent t)

Adds this instance as a listener for the specified text component.

Parameters:

t - the text component.

removeTextComponent

public static void removeTextComponent(javax.swing.text.JTextComponent t)

Removes this instance as a listener for the specified text component.

Parameters:

t - the text component.