* 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 JavaBeans™
* has been added to the java.beans package.
* Please see {@link java.beans.XMLEncoder}.
*
* @author Alan Chung
* @author Philip Milne
* @see TableModel
*/
@SuppressWarnings("serial") // Same-version serialization only
public class TableModelEvent extends java.util.EventObject
{
/** Identifies the addition 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 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.
*/
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.
*/
public TableModelEvent(TableModel source, int row) {
this(source, row, row, ALL_COLUMNS, UPDATE);
}
/**
* The data in rows [firstRow, lastRow] 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.
*/
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. */ 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; } }