Module java.desktop

Class TableModelEvent

java.lang.Object
java.util.EventObject
javax.swing.event.TableModelEvent
All Implemented Interfaces:
Serializable

public class TableModelEvent
extends EventObject
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 JavaBeans™ has been added to the java.beans package. Please see XMLEncoder.

See Also:
TableModel
  • Field Summary

    Fields
    Modifier and Type Field Description
    static int ALL_COLUMNS
    Specifies all columns in a row or rows.
    protected int column
    The column for the event.
    static int DELETE
    Identifies the removal of rows or columns.
    protected int firstRow
    The first row that has changed.
    static int HEADER_ROW
    Identifies the header row.
    static int INSERT
    Identifies the addition of new rows or columns.
    protected int lastRow
    The last row that has changed.
    protected int type
    The type of the event.
    static int UPDATE
    Identifies a change to existing data.

    Fields declared in class java.util.EventObject

    source
  • Constructor Summary

    Constructors
    Constructor Description
    TableModelEvent​(TableModel source)
    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.
    TableModelEvent​(TableModel source, int row)
    This row of data has been updated.
    TableModelEvent​(TableModel source, int firstRow, int lastRow)
    The data in rows [firstRow, lastRow] have been updated.
    TableModelEvent​(TableModel source, int firstRow, int lastRow, int column)
    The cells in column column in the range [firstRow, lastRow] have been updated.
    TableModelEvent​(TableModel source, int firstRow, int lastRow, int column, int type)
    The cells from (firstRow, column) to (lastRow, column) have been changed.
  • Method Summary

    Modifier and Type Method Description
    int getColumn()
    Returns the column for the event.
    int getFirstRow()
    Returns the first row that changed.
    int getLastRow()
    Returns the last row that changed.
    int getType()
    Returns the type of event - one of: INSERT, UPDATE and DELETE.

    Methods declared in class java.util.EventObject

    getSource, toString

    Methods declared in class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
  • Field Details

    • INSERT

      public static final int INSERT
      Identifies the addition of new rows or columns.
      See Also:
      Constant Field Values
    • UPDATE

      public static final int UPDATE
      Identifies a change to existing data.
      See Also:
      Constant Field Values
    • DELETE

      public static final int DELETE
      Identifies the removal of rows or columns.
      See Also:
      Constant Field Values
    • HEADER_ROW

      public static final int HEADER_ROW
      Identifies the header row.
      See Also:
      Constant Field Values
    • ALL_COLUMNS

      public static final int ALL_COLUMNS
      Specifies all columns in a row or rows.
      See Also:
      Constant Field Values
    • type

      protected int type
      The type of the event.
    • firstRow

      protected int firstRow
      The first row that has changed.
    • lastRow

      protected int lastRow
      The last row that has changed.
    • column

      protected int column
      The column for the event.
  • Constructor Details

    • TableModelEvent

      public TableModelEvent​(TableModel source)
      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.
      Parameters:
      source - the TableModel affected by this event
    • TableModelEvent

      public TableModelEvent​(TableModel source, int row)
      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.
      Parameters:
      source - the TableModel affected by this event
      row - the row which has been updated
    • TableModelEvent

      public TableModelEvent​(TableModel source, int firstRow, int lastRow)
      The data in rows [firstRow, lastRow] have been updated.
      Parameters:
      source - the TableModel affected by this event
      firstRow - the first row affected by this event
      lastRow - the last row affected by this event
    • TableModelEvent

      public TableModelEvent​(TableModel source, int firstRow, int lastRow, int column)
      The cells in column column in the range [firstRow, lastRow] have been updated.
      Parameters:
      source - the TableModel affected by this event
      firstRow - the first row affected by this event
      lastRow - the last row affected by this event
      column - the column index of cells changed; ALL_COLUMNS signifies all cells in the specified range of rows are changed.
    • TableModelEvent

      public TableModelEvent​(TableModel source, int firstRow, int lastRow, int column, int type)
      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.

      Parameters:
      source - the TableModel affected by this event
      firstRow - the first row affected by this event
      lastRow - the last row affected by this event
      column - the column index of cells changed; ALL_COLUMNS signifies all cells in the specified range of rows are changed.
      type - the type of change signified by this even, INSERT, DELETE or UPDATE
  • Method Details

    • getFirstRow

      public int getFirstRow()
      Returns the first row that changed. HEADER_ROW means the meta data, ie. names, types and order of the columns.
      Returns:
      an integer signifying the first row changed
    • getLastRow

      public int getLastRow()
      Returns the last row that changed.
      Returns:
      an integer signifying the last row changed
    • getColumn

      public int getColumn()
      Returns the column for the event. If the return value is ALL_COLUMNS; it means every column in the specified rows changed.
      Returns:
      an integer signifying which column is affected by this event
    • getType

      public int getType()
      Returns the type of event - one of: INSERT, UPDATE and DELETE.
      Returns:
      the type of change to a table model, an INSERT or DELETE of row(s) or column(s) or UPDATE to data