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org.geotools.gui.swing
Class AutoScroll  

java.lang.Object
  org.geotools.gui.swing.AutoScroll

All Implemented Interfaces:

javax.swing.event.ChangeListener, java.util.EventListener, java.io.Serializable

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final class AutoScroll

extends java.lang.Object

implements javax.swing.event.ChangeListener, java.io.Serializable

Scroll down a panel when new lines are added. This helper class require only the reference to the underlying javax.swing.BoundedRangeModel. If the model's value is equals to its maximal value and this maximal value increase, then this class increase the model's value as well. Example of use:

 DefaultTableModel table = new DefaultTableModel();
 JScrollPane pane = new JScrollPane(new JTable(table));
 AutoScroll autos = new AutoScrool(pane.getVerticalScrollBar().getModel());
 // etc...

 // Now, add the new item to the table. The table
 // will be scrolled down automatically if needed.
 table.addRow(...);
 

Version:

$Id: AutoScroll.java,v 1.5 2003/02/09 23:38:11 lbruand Exp $

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Field Summary
static java.lang.String	CVSID
private  int	extent           Properties of the javax.swing.BoundedRangeModel the last time sync() 55 has been invoked.
private  int	maximum           Properties of the javax.swing.BoundedRangeModel the last time sync() 55 has been invoked.
private  javax.swing.BoundedRangeModel	model           The model for the vertical scrollbar.
private static long	serialVersionUID           Serial number for interoperability with different versions.
private  int	value           Properties of the javax.swing.BoundedRangeModel the last time sync() 55 has been invoked.

 

Constructor Summary

AutoScroll(javax.swing.BoundedRangeModel model)           Construct a new AutoScroll for the specified model.

 

Method Summary
void	dispose()           Dispose any resources hold by this object.
void	stateChanged(javax.swing.event.ChangeEvent event)           Invoked automatically when the upper limit of javax.swing.BoundedRangeModel has increased.
private  void	sync()           Copy current model's state into value 55 , extent 55 and maximum 55 fields.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

CVSID

public static final java.lang.String CVSID

See Also:

Constant Field Values

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serialVersionUID

private static final long serialVersionUID

Serial number for interoperability with different versions.

See Also:

Constant Field Values

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model

private final javax.swing.BoundedRangeModel model

The model for the vertical scrollbar.

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value

private int value

Properties of the javax.swing.BoundedRangeModel the last time sync() 55 has been invoked.

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extent

private int extent

Properties of the javax.swing.BoundedRangeModel the last time sync() 55 has been invoked.

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maximum

private int maximum

Properties of the javax.swing.BoundedRangeModel the last time sync() 55 has been invoked.

Constructor Detail

AutoScroll

public AutoScroll(javax.swing.BoundedRangeModel model)

Construct a new AutoScroll for the specified model.

Method Detail

dispose

public void dispose()

Dispose any resources hold by this object. This method deregisters any listeners.

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sync

private void sync()

Copy current model's state into value 55 , extent 55 and maximum 55 fields.

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stateChanged

public void stateChanged(javax.swing.event.ChangeEvent event)

Invoked automatically when the upper limit of javax.swing.BoundedRangeModel has increased. If the last row was visible prior the addition of new rows, then this method scrolls down the model in order to show the new rows.

Specified by:

stateChanged in interface javax.swing.event.ChangeListener

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