- java.lang.Object
-
- javax.swing.table.AbstractTableModel
-
- All Implemented Interfaces:
- Serializable, TableModel
- Direct Known Subclasses:
- DefaultTableModel
public abstract class AbstractTableModel extends Object implements TableModel, Serializable
This abstract class provides default implementations for most of the methods in theTableModel
interface. It takes care of the management of listeners and provides some conveniences for generatingTableModelEvents
and dispatching them to the listeners. To create a concreteTableModel
as a subclass ofAbstractTableModel
you need only provide implementations for the following three methods:public int getRowCount(); public int getColumnCount(); public Object getValueAt(int row, int column);
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 seeXMLEncoder
.
-
-
Field Summary
Fields Modifier and Type Field and Description protected EventListenerList
listenerList
List of listeners
-
Constructor Summary
Constructors Constructor and Description AbstractTableModel()
-
Method Summary
Methods Modifier and Type Method and Description void
addTableModelListener(TableModelListener l)
Adds a listener to the list that's notified each time a change to the data model occurs.int
findColumn(String columnName)
Returns a column given its name.void
fireTableCellUpdated(int row, int column)
Notifies all listeners that the value of the cell at[row, column]
has been updated.void
fireTableChanged(TableModelEvent e)
Forwards the given notification event to allTableModelListeners
that registered themselves as listeners for this table model.void
fireTableDataChanged()
Notifies all listeners that all cell values in the table's rows may have changed.void
fireTableRowsDeleted(int firstRow, int lastRow)
Notifies all listeners that rows in the range[firstRow, lastRow]
, inclusive, have been deleted.void
fireTableRowsInserted(int firstRow, int lastRow)
Notifies all listeners that rows in the range[firstRow, lastRow]
, inclusive, have been inserted.void
fireTableRowsUpdated(int firstRow, int lastRow)
Notifies all listeners that rows in the range[firstRow, lastRow]
, inclusive, have been updated.void
fireTableStructureChanged()
Notifies all listeners that the table's structure has changed.Class<?>
getColumnClass(int columnIndex)
ReturnsObject.class
regardless ofcolumnIndex
.String
getColumnName(int column)
Returns a default name for the column using spreadsheet conventions: A, B, C, ...<T extends EventListener>
T[]getListeners(Class<T> listenerType)
Returns an array of all the objects currently registered asFooListener
s upon thisAbstractTableModel
.TableModelListener[]
getTableModelListeners()
Returns an array of all the table model listeners registered on this model.boolean
isCellEditable(int rowIndex, int columnIndex)
Returns false.void
removeTableModelListener(TableModelListener l)
Removes a listener from the list that's notified each time a change to the data model occurs.void
setValueAt(Object aValue, int rowIndex, int columnIndex)
This empty implementation is provided so users don't have to implement this method if their data model is not editable.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
-
Methods inherited from interface javax.swing.table.TableModel
getColumnCount, getRowCount, getValueAt
-
-
-
-
Field Detail
-
listenerList
protected EventListenerList listenerList
List of listeners
-
-
Method Detail
-
getColumnName
public String getColumnName(int column)
Returns a default name for the column using spreadsheet conventions: A, B, C, ... Z, AA, AB, etc. Ifcolumn
cannot be found, returns an empty string.- Specified by:
getColumnName
in interfaceTableModel
- Parameters:
column
- the column being queried- Returns:
- a string containing the default name of
column
-
findColumn
public int findColumn(String columnName)
Returns a column given its name. Implementation is naive so this should be overridden if this method is to be called often. This method is not in theTableModel
interface and is not used by theJTable
.- Parameters:
columnName
- string containing name of column to be located- Returns:
- the column with
columnName
, or -1 if not found
-
getColumnClass
public Class<?> getColumnClass(int columnIndex)
ReturnsObject.class
regardless ofcolumnIndex
.- Specified by:
getColumnClass
in interfaceTableModel
- Parameters:
columnIndex
- the column being queried- Returns:
- the Object.class
-
isCellEditable
public boolean isCellEditable(int rowIndex, int columnIndex)
Returns false. This is the default implementation for all cells.- Specified by:
isCellEditable
in interfaceTableModel
- Parameters:
rowIndex
- the row being queriedcolumnIndex
- the column being queried- Returns:
- false
- See Also:
TableModel.setValueAt(java.lang.Object, int, int)
-
setValueAt
public void setValueAt(Object aValue, int rowIndex, int columnIndex)
This empty implementation is provided so users don't have to implement this method if their data model is not editable.- Specified by:
setValueAt
in interfaceTableModel
- Parameters:
aValue
- value to assign to cellrowIndex
- row of cellcolumnIndex
- column of cell- See Also:
TableModel.getValueAt(int, int)
,TableModel.isCellEditable(int, int)
-
addTableModelListener
public void addTableModelListener(TableModelListener l)
Adds a listener to the list that's notified each time a change to the data model occurs.- Specified by:
addTableModelListener
in interfaceTableModel
- Parameters:
l
- the TableModelListener
-
removeTableModelListener
public void removeTableModelListener(TableModelListener l)
Removes a listener from the list that's notified each time a change to the data model occurs.- Specified by:
removeTableModelListener
in interfaceTableModel
- Parameters:
l
- the TableModelListener
-
getTableModelListeners
public TableModelListener[] getTableModelListeners()
Returns an array of all the table model listeners registered on this model.- Returns:
- all of this model's
TableModelListener
s or an empty array if no table model listeners are currently registered - Since:
- 1.4
- See Also:
addTableModelListener(javax.swing.event.TableModelListener)
,removeTableModelListener(javax.swing.event.TableModelListener)
-
fireTableDataChanged
public void fireTableDataChanged()
Notifies all listeners that all cell values in the table's rows may have changed. The number of rows may also have changed and theJTable
should redraw the table from scratch. The structure of the table (as in the order of the columns) is assumed to be the same.
-
fireTableStructureChanged
public void fireTableStructureChanged()
Notifies all listeners that the table's structure has changed. The number of columns in the table, and the names and types of the new columns may be different from the previous state. If theJTable
receives this event and itsautoCreateColumnsFromModel
flag is set it discards any table columns that it had and reallocates default columns in the order they appear in the model. This is the same as callingsetModel(TableModel)
on theJTable
.- See Also:
TableModelEvent
,EventListenerList
-
fireTableRowsInserted
public void fireTableRowsInserted(int firstRow, int lastRow)
Notifies all listeners that rows in the range[firstRow, lastRow]
, inclusive, have been inserted.- Parameters:
firstRow
- the first rowlastRow
- the last row- See Also:
TableModelEvent
,EventListenerList
-
fireTableRowsUpdated
public void fireTableRowsUpdated(int firstRow, int lastRow)
Notifies all listeners that rows in the range[firstRow, lastRow]
, inclusive, have been updated.- Parameters:
firstRow
- the first rowlastRow
- the last row- See Also:
TableModelEvent
,EventListenerList
-
fireTableRowsDeleted
public void fireTableRowsDeleted(int firstRow, int lastRow)
Notifies all listeners that rows in the range[firstRow, lastRow]
, inclusive, have been deleted.- Parameters:
firstRow
- the first rowlastRow
- the last row- See Also:
TableModelEvent
,EventListenerList
-
fireTableCellUpdated
public void fireTableCellUpdated(int row, int column)
Notifies all listeners that the value of the cell at[row, column]
has been updated.- Parameters:
row
- row of cell which has been updatedcolumn
- column of cell which has been updated- See Also:
TableModelEvent
,EventListenerList
-
fireTableChanged
public void fireTableChanged(TableModelEvent e)
Forwards the given notification event to allTableModelListeners
that registered themselves as listeners for this table model.- Parameters:
e
- the event to be forwarded- See Also:
addTableModelListener(javax.swing.event.TableModelListener)
,TableModelEvent
,EventListenerList
-
getListeners
public <T extends EventListener> T[] getListeners(Class<T> listenerType)
Returns an array of all the objects currently registered asFooListener
s upon thisAbstractTableModel
.FooListener
s are registered using theaddFooListener
method.You can specify the
listenerType
argument with a class literal, such asFooListener.class
. For example, you can query a modelm
for its table model listeners with the following code:TableModelListener[] tmls = (TableModelListener[])(m.getListeners(TableModelListener.class));
If no such listeners exist, this method returns an empty array.- Parameters:
listenerType
- the type of listeners requested; this parameter should specify an interface that descends fromjava.util.EventListener
- Returns:
- an array of all objects registered as
FooListener
s on this component, or an empty array if no such listeners have been added - Throws:
ClassCastException
- iflistenerType
doesn't specify a class or interface that implementsjava.util.EventListener
- Since:
- 1.3
- See Also:
getTableModelListeners()
-
-
Traduction non disponible
Les API Java ne sont pas encore traduites en français sur l'infobrol. Seule la version anglaise est disponible pour l'instant.
Version en cache
22/12/2024 19:47:01 Cette version de la page est en cache (à la date du 22/12/2024 19:47:01) afin d'accélérer le traitement. Vous pouvez activer le mode utilisateur dans le menu en haut pour afficher la dernère version de la page.Document créé le 30/08/2006, dernière modification le 04/03/2020
Source du document imprimé : https://www.gaudry.be/java-api-rf-javax/swing/table/abstracttablemodel.html
L'infobrol est un site personnel dont le contenu n'engage que moi. Le texte est mis à disposition sous licence CreativeCommons(BY-NC-SA). Plus d'info sur les conditions d'utilisation et sur l'auteur.
Références
Ces références et liens indiquent des documents consultés lors de la rédaction de cette page, ou qui peuvent apporter un complément d'information, mais les auteurs de ces sources ne peuvent être tenus responsables du contenu de cette page.
L'auteur de ce site est seul responsable de la manière dont sont présentés ici les différents concepts, et des libertés qui sont prises avec les ouvrages de référence. N'oubliez pas que vous devez croiser les informations de sources multiples afin de diminuer les risques d'erreurs.