/* * Copyright (c) 1997, 2001, Oracle and/or its affiliates. All rights reserved. * 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. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.event; import java.util.EventObject;import javax.swing.table.*; /** * TableModelEvent is used to notify listeners that a table model * has changed. The model event describes changes to a TableModel * and all references to rows and columns are in the co-ordinate * system of the model. * Depending on the parameters used in the constructors, the TableModelevent * can be used to specify the following types of changes: <p> * * <pre> * TableModelEvent(source);              //  The data, ie. all rows changed * TableModelEvent(source, HEADER_ROW);  //  Structure change, reallocate TableColumns * TableModelEvent(source, 1);           //  Row 1 changed * TableModelEvent(source, 3, 6);        //  Rows 3 to 6 inclusive changed * TableModelEvent(source, 2, 2, 6);     //  Cell at (2, 6) changed * TableModelEvent(source, 3, 6, ALL_COLUMNS, INSERT); // Rows (3, 6) were inserted * TableModelEvent(source, 3, 6, ALL_COLUMNS, DELETE); // Rows (3, 6) were deleted * </pre> * * It is possible to use other combinations of the parameters, not all of them * are meaningful. By subclassing, you can add other information, for example: * whether the event WILL happen or DID happen. This makes the specification * of rows in DELETE events more useful but has not been included in * the swing package as the JTable only needs post-event notification. * <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<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. * * @author Alan Chung * @author Philip Milne * @see TableModel */public class TableModelEvent extends java.util.EventObject{    /** Identifies the addtion of new rows or columns. */    public static final int INSERT =  1;    /** Identifies a change to existing data. */    public static final int UPDATE =  0;    /** Identifies the removal of rows or columns. */    public static final int DELETE = -1;     /** Identifies the header row. */    public static final int HEADER_ROW = -1;     /** Specifies all columns in a row or rows. */    public static final int ALL_COLUMNS = -1; ////  Instance Variables//     protected int       type;    protected int       firstRow;    protected int       lastRow;    protected int       column; //// Constructors//     /**     *  All row data in the table has changed, listeners should discard any state     *  that was based on the rows and requery the <code>TableModel</code>     *  to get the new row count and all the appropriate values.     *  The <code>JTable</code> will repaint the entire visible region on     *  receiving this event, querying the model for the cell values that are visible.     *  The structure of the table ie, the column names, types and order     *  have not changed.     */    public TableModelEvent(TableModel source) {        // Use Integer.MAX_VALUE instead of getRowCount() in case rows were deleted.        this(source, 0, Integer.MAX_VALUE, ALL_COLUMNS, UPDATE);    }     /**     *  This row of data has been updated.     *  To denote the arrival of a completely new table with a different structure     *  use <code>HEADER_ROW</code> as the value for the <code>row</code>.     *  When the <code>JTable</code> receives this event and its     *  <code>autoCreateColumnsFromModel</code>     *  flag is set it discards any TableColumns that it had and reallocates     *  default ones in the order they appear in the model. This is the     *  same as calling <code>setModel(TableModel)</code> on the <code>JTable</code>.     */    public TableModelEvent(TableModel source, int row) {        this(source, row, row, ALL_COLUMNS, UPDATE);    }     /**     *  The data in rows [<I>firstRow</I>, <I>lastRow</I>] have been updated.     */    public TableModelEvent(TableModel source, int firstRow, int lastRow) {        this(source, firstRow, lastRow, ALL_COLUMNS, UPDATE);    }     /**     *  The cells in column <I>column</I> in the range     *  [<I>firstRow</I>, <I>lastRow</I>] have been updated.     */    public TableModelEvent(TableModel source, int firstRow, int lastRow, int column) {        this(source, firstRow, lastRow, column, UPDATE);    }     /**     *  The cells from (firstRow, column) to (lastRow, column) have been changed.     *  The <I>column</I> refers to the column index of the cell in the model's     *  co-ordinate system. When <I>column</I> is ALL_COLUMNS, all cells in the     *  specified range of rows are considered changed.     *  <p>     *  The <I>type</I> should be one of: INSERT, UPDATE and DELETE.     */    public TableModelEvent(TableModel source, int firstRow, int lastRow, int column, int type) {        super(source);        this.firstRow = firstRow;        this.lastRow = lastRow;        this.column = column;        this.type = type;    } //// Querying Methods//    /** Returns the first row that changed.  HEADER_ROW means the meta data,     * ie. names, types and order of the columns.     */    public int getFirstRow() { return firstRow; };     /** Returns the last row that changed. */    public int getLastRow() { return lastRow; };     /**     *  Returns the column for the event.  If the return     *  value is ALL_COLUMNS; it means every column in the specified     *  rows changed.     */    public int getColumn() { return column; };     /**     *  Returns the type of event - one of: INSERT, UPDATE and DELETE.     */    public int getType() { return type; }}