/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
package javax.swing.event;
import java.util.EventObject;
import javax.swing.*;
/**
* An event that characterizes a change in selection. The change is limited to a
* a single inclusive interval. The selection of at least one index within the
* range will have changed. A decent {@code ListSelectionModel} implementation
* will keep the range as small as possible. {@code ListSelectionListeners} will
* generally query the source of the event for the new selected status of each
* potentially changed row.
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is
* appropriate for short term storage or RMI between applications running
* the same version of Swing. As of 1.4, support for long term storage
* of all JavaBeans™
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*
* @author Hans Muller
* @author Ray Ryan
* @see ListSelectionModel
*/
@SuppressWarnings("serial") // Same-version serialization only
public class ListSelectionEvent extends EventObject
{
private int firstIndex;
private int lastIndex;
private boolean isAdjusting;
/**
* Represents a change in selection status between {@code firstIndex} and
* {@code lastIndex}, inclusive. {@code firstIndex} is less than or equal to
* {@code lastIndex}. The selection of at least one index within the range will
* have changed.
*
* @param source the {@code Object} on which the event initially occurred
* @param firstIndex the first index in the range, <= lastIndex
* @param lastIndex the last index in the range, >= firstIndex
* @param isAdjusting whether or not this is one in a series of
* multiple events, where changes are still being made
*/
public ListSelectionEvent(Object source, int firstIndex, int lastIndex,
boolean isAdjusting)
{
super(source);
this.firstIndex = firstIndex;
this.lastIndex = lastIndex;
this.isAdjusting = isAdjusting;
}
/**
* Returns the index of the first row whose selection may have changed.
* {@code getFirstIndex() <= getLastIndex()}
*
* @return the first row whose selection value may have changed,
* where zero is the first row
*/
public int getFirstIndex() { return firstIndex; }
/**
* Returns the index of the last row whose selection may have changed.
* {@code getLastIndex() >= getFirstIndex()}
*
* @return the last row whose selection value may have changed,
* where zero is the first row
*/
public int getLastIndex() { return lastIndex; }
/**
* Returns whether or not this is one in a series of multiple events,
* where changes are still being made. See the documentation for
* {@link javax.swing.ListSelectionModel#setValueIsAdjusting} for
* more details on how this is used.
*
* @return {@code true} if this is one in a series of multiple events,
* where changes are still being made
*/
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