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/* AdjustmentEvent.java -- An adjustable value was changed.
Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the non-peer AWT libraries of GNU Classpath.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published
by the Free Software Foundation, either version 2 of the License, or
(at your option) any later verion.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; if not, write to the Free Software Foundation
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA. */
package java.awt.event;
import java.awt.Adjustable;
/**
* This class represents an event that is generated when an adjustable
* value is changed.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
*/
public class AdjustmentEvent extends java.awt.AWTEvent
implements java.io.Serializable
{
/*
* Static Variables
*/
/**
* This is the first id in the range of ids used by adjustment events.
*/
public static final int ADJUSTMENT_FIRST = 601;
/**
* This is the last id in the range of ids used by adjustment events.
*/
public static final int ADJUSTMENT_LAST = 601;
/**
* This is the id indicating an adjustment value changed.
*/
public static final int ADJUSTMENT_VALUE_CHANGED = 601;
/**
* Adjustment type for unit increments
*/
public static final int UNIT_INCREMENT = 1;
/**
* Adjustment type for unit decrements
*/
public static final int UNIT_DECREMENT = 2;
/**
* Adjustment type for block decrements
*/
public static final int BLOCK_DECREMENT = 3;
/**
* Adjustment type for block increments
*/
public static final int BLOCK_INCREMENT = 4;
/**
* Adjustment type for tracking adjustments
*/
public static final int TRACK = 5;
/*************************************************************************/
/*
* Instance Variables
*/
/**
* @serial The object that caused the event.
*/
private Adjustable adjustable;
/**
* @serial The adjustment type
*/
private int adjustmentType;
/**
* @serial The adjustment value
*/
private int value;
/*************************************************************************/
/*
* Constructors
*/
/**
* Initializes an instance of <code>AdjustmentEvent</code> with the
* specified source, id, type, and value.
*
* @param source The source of the event.
* @param id The event id
* @param type The event type, which will be one of the constants in
* this class.
* @param value The value of the adjustment.
*/
public
AdjustmentEvent(Adjustable source, int id, int type, int value)
{
super(source, id);
this.adjustmentType = type;
this.value = value;
this.adjustable = source;
}
/*************************************************************************/
/*
* Instance Methods
*/
/**
* This method returns the source of the event as an <code>Adjustable</code>.
*
* @return The source of the event as an <code>Adjustable</code>.
*/
public Adjustable
getAdjustable()
{
return((Adjustable)getSource());
}
/*************************************************************************/
/**
* Returns the type of the event, which will be one of the constants
* defined in this class.
*
* @return The type of the event.
*/
public int
getAdjustmentType()
{
return(adjustmentType);
}
/*************************************************************************/
/**
* Returns the value of the event.
*
* @return The value of the event.
*/
public int
getValue()
{
return(value);
}
/*************************************************************************/
/**
* Returns a string that describes the event.
*
* @param A string that describes the event.
*/
public String
paramString()
{
return(getClass().getName() + " source= " + getSource() + " id=" + getID() +
" type=" + getAdjustmentType() + " value=" + getValue());
}
} // class AdjustmentEvent
|
