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JavaTM 2 Platform Std. Ed. v1.3.1 |
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javax.swing.event
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, reallcoate 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 deletedIt 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. A future release of Swing will provide support for long term persistence.
- See Also:
TableModel, Serialized Form
| Field Summary | |
static int |
ALL_COLUMNS
Specifies all columns in a row or rows. |
protected int |
column
|
static int |
DELETE
Identifies the removal of rows or columns. |
protected int |
firstRow
|
static int |
HEADER_ROW
Identifies the header row. |
static int |
INSERT
Identifies the addtion of new rows or columns. |
protected int |
lastRow
|
protected int |
type
|
static int |
UPDATE
Identifies a change to existing data. |
| Fields inherited from class java.util.EventObject |
source |
| Constructor Summary | |
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. |
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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. |
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TableModelEvent(TableModel source,
int firstRow,
int lastRow,
int column)
The cells in column column in the range [firstRow, lastRow] have been updated. |
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TableModelEvent(TableModel source,
int firstRow,
int lastRow,
int column,
int type)
The cells from (firstRow, column) to (lastRow, column) have been changed. |
|
| Method Summary | |
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 inherited from class java.util.EventObject |
getSource, toString |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
INSERT
public static final int INSERT
- Identifies the addtion of new rows or columns.
UPDATE
public static final int UPDATE
- Identifies a change to existing data.
DELETE
public static final int DELETE
- Identifies the removal of rows or columns.
HEADER_ROW
public static final int HEADER_ROW
- Identifies the header row.
ALL_COLUMNS
public static final int ALL_COLUMNS
- Specifies all columns in a row or rows.
type
protected int type
firstRow
protected int firstRow
lastRow
protected int lastRow
column
protected int column
| Constructor Detail |
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 recieving this event, querying the model for the cell values that are visble. The structure of the table ie, the column names, types and order have not changed.
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_ROWas the value for the row. When the JTable recieves 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 callingsetModel(TableModel)on the JTable.
TableModelEvent
public TableModelEvent(TableModel source, int firstRow, int lastRow)
- The data in rows [firstRow, lastRow] have been updated.
TableModelEvent
public TableModelEvent(TableModel source, int firstRow, int lastRow, int column)
- The cells in column column in the range [firstRow, lastRow] have been updated.
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.
| Method Detail |
getFirstRow
public int getFirstRow()
- Returns the first row that changed. HEADER_ROW means the meta data, ie. names, types and order of the columns.
getLastRow
public int getLastRow()
- Returns the last row that 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.
getType
public int getType()
- Returns the type of event - one of: INSERT, UPDATE and DELETE.
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JavaTM 2 Platform Std. Ed. v1.3.1 |
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