Package org.jfree.ui
Class JTextObserver
- java.lang.Object
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- org.jfree.ui.JTextObserver
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- All Implemented Interfaces:
FocusListener
,EventListener
public final class JTextObserver extends Object implements FocusListener
An observer that selects all the text when a field gains the focus.- Author:
- Thomas Morgner
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static void
addTextComponent(JTextComponent t)
Adds this instance as a listener for the specified text component.void
focusGained(FocusEvent e)
Selects all the text when a field gains the focus.void
focusLost(FocusEvent e)
Deselects the text when a field loses the focus.static JTextObserver
getInstance()
Returns the single instance.static void
removeTextComponent(JTextComponent t)
Removes this instance as a listener for the specified text component.
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Method Detail
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getInstance
public static JTextObserver getInstance()
Returns the single instance.- Returns:
- The single instance.
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focusGained
public void focusGained(FocusEvent e)
Selects all the text when a field gains the focus.- Specified by:
focusGained
in interfaceFocusListener
- Parameters:
e
- the focus event.
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focusLost
public void focusLost(FocusEvent e)
Deselects the text when a field loses the focus.- Specified by:
focusLost
in interfaceFocusListener
- Parameters:
e
- the event.
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addTextComponent
public static void addTextComponent(JTextComponent t)
Adds this instance as a listener for the specified text component.- Parameters:
t
- the text component.
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removeTextComponent
public static void removeTextComponent(JTextComponent t)
Removes this instance as a listener for the specified text component.- Parameters:
t
- the text component.
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