Package org.ka2ddo.yaac.gui.util

Class NonEmptyTextButtonEnabler

java.lang.Object

org.ka2ddo.yaac.gui.util.NonEmptyTextButtonEnabler

All Implemented Interfaces:

EventListener, DocumentListener

public class NonEmptyTextButtonEnabler
extends Object
implements DocumentListener

This class implements a generic listener for enabling and disabling a button based on whether the associated text document contains text or not.

Author:

Andrew Pavlin, KA2DDO

Constructor Summary

Constructors

Constructor	Description
NonEmptyTextButtonEnabler(JComponent comp)	Create a document listener that will update the enabled state of a JComponent based on whether there is any text in the document.
NonEmptyTextButtonEnabler(JComponent comp, ButtonModel qualifyingModel)	Create a document listener that will update the enabled state of a JComponent based on whether there is any text in the document.
NonEmptyTextButtonEnabler(JComponent comp, JToggleButton qualifyingButton)	Create a document listener that will update the enabled state of a JComponent based on whether there is any text in the document.

Method Summary

Modifier and Type	Method	Description
void	changedUpdate(DocumentEvent e)	Gives notification that an attribute or set of attributes changed.
void	insertUpdate(DocumentEvent e)	Gives notification that there was an insert into the document.
void	removeUpdate(DocumentEvent e)	Gives notification that a portion of the document has been removed.

Methods inherited from class java.lang.Object

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

Constructor Details

NonEmptyTextButtonEnabler

public NonEmptyTextButtonEnabler(JComponent comp)

Create a document listener that will update the enabled state of a JComponent based on whether there is any text in the document.

Parameters:

comp - JComponent whose enabled state should be updated

NonEmptyTextButtonEnabler

public NonEmptyTextButtonEnabler(JComponent comp,
 ButtonModel qualifyingModel)

Create a document listener that will update the enabled state of a JComponent based on whether there is any text in the document.

Parameters:

comp - JComponent whose enabled state should be updated

qualifyingModel - ButtonModel used to indicate whether comp can be enabled

NonEmptyTextButtonEnabler

public NonEmptyTextButtonEnabler(JComponent comp,
 JToggleButton qualifyingButton)

Create a document listener that will update the enabled state of a JComponent based on whether there is any text in the document.

Parameters:

comp - JComponent whose enabled state should be updated

qualifyingButton - JToggleButton used to indicate whether comp can be enabled

Method Details

insertUpdate

public void insertUpdate(DocumentEvent e)

Gives notification that there was an insert into the document. The range given by the DocumentEvent bounds the freshly inserted region.

Specified by:

insertUpdate in interface DocumentListener

Parameters:

e - the document event

removeUpdate

public void removeUpdate(DocumentEvent e)

Gives notification that a portion of the document has been removed. The range is given in terms of what the view last saw (that is, before updating sticky positions).

Specified by:

removeUpdate in interface DocumentListener

Parameters:

e - the document event

changedUpdate

public void changedUpdate(DocumentEvent e)

Gives notification that an attribute or set of attributes changed.

Specified by:

changedUpdate in interface DocumentListener

Parameters:

e - the document event