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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 2 along with this work; if not, write to the Free Software Foundation,
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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: 


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


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.


Warning:
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 JavaBeansTM
has been added to the java.beans package. Please see XMLEncoder. 
Author:Alan Chung, Philip Milne
See Also:
/**
 * 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. 
/** Identifies the addtion of new rows or columns. */
    public static final int INSERT =  1;
    
Identifies a change to existing data. 
/** Identifies a change to existing data. */
    public static final int UPDATE =  0;
    
Identifies the removal of rows or columns. 
/** Identifies the removal of rows or columns. */
    public static final int DELETE = -1;

    
Identifies the header row. 
/** Identifies the header row. */
    public static final int HEADER_ROW = -1;

    
Specifies all columns in a row or rows. 
/** 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 TableModel
 to get the new row count and all the appropriate values.
 The JTable 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.

/**
     *  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 HEADER_ROW as the value for the row.
 When the JTable receives this event and its
 autoCreateColumnsFromModel
 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 setModel(TableModel) on the JTable.

/**
     *  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 [firstRow, lastRow] have been updated.

/**
     *  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 column in the range
 [firstRow, lastRow] have been updated.

/**
     *  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 column refers to the column index of the cell in the model's
 co-ordinate system. When column is ALL_COLUMNS, all cells in the
 specified range of rows are considered changed.
 

 The type should be one of: INSERT, UPDATE and DELETE.

/**
     *  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.

/** 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. 
/** 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.

/**
     *  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.

/**
     *  Returns the type of event - one of: INSERT, UPDATE and DELETE.
     */
    public int getType() { return type; }
}