com.eliad.model
Class AbstractGridModel

java.lang.Object
  |
  +--com.eliad.model.AbstractGenericModel
        |
        +--com.eliad.model.AbstractGridModel

Direct Known Subclasses:

DefaultHeaderModel, GenericGridModel

public abstract class AbstractGridModel

extends com.eliad.model.AbstractGenericModel

implements GridModel

This abstract class provides default implementations for most of the methods in the GridModel interface. It takes care of the management of listeners and provides some conveniences for generating GridModelEvents and dispatching them to the listeners. To create a concrete GridModel as a subclass of AbstractGridModel you need only provide implementations for the following three methods:

  public int getRowCount();
  public int getColumnCount();
  public Object getValueAt(int row, int column);
  

Version:

1.0 04/08/00

Author:

Patrick Mérissert-Coffinières

See Also:

Serialized Form

Fields inherited from class com.eliad.model.AbstractGenericModel

listeners_

Constructor Summary

AbstractGridModel()

Method Summary

void	addGridModelListener(GridModelListener l) Adds a listener to the list that's notified each time a change to the data model occurs.
void	fireGridCellsChanged(int firstRow, int firstColumn, int rowCount, int columnCount) Forwards a "data changed" notification event to all GridModelListeners that are registered for this grid model.
void	fireGridColumnsChanged(int firstColumn, int columnCount) Forwards a "data changed" notification event to all GridModelListeners that registered themselves as listeners for this grid model.
void	fireGridColumnsDeleted(int firstColumn, int columnCount) Forwards a columns removed notification event to all GridModelListeners that registered themselves as listeners for this grid model.
void	fireGridColumnsInserted(int firstColumn, int columnCount) Forwards a columns added notification event to all GridModelListeners that registered themselves as listeners for this grid model.
void	fireGridModelChanged() Forwards a "structure totally changed" notification event to all GridModelListeners that registered themselves as listeners for this grid model.
void	fireGridRowsChanged(int firstRow, int rowCount) Forwards a "data changed" notification event to all GridModelListeners that are registered for this grid model.
void	fireGridRowsDeleted(int firstRow, int rowCount) Forwards a rows removed notification event to all GridModelListeners that registered themselves as listeners for this grid model.
void	fireGridRowsInserted(int firstRow, int rowCount) Forwards a rows added notification event to all GridModelListeners that registered themselves as listeners for this grid model.
void	fireGridStructureChanged(int type, int first, int count) Forwards a "structure incrementally changed" notification event to all GridModelListeners that registered themselves as listeners for this grid model.
boolean	isCellEditable(int row, int column) Returns whether the cell at row and column is editable.
protected void	propagateDataChange(GridModelEvent e)
protected void	propagateModelChange(GridModelEvent e)
protected void	propagateStructureChange(GridModelEvent e)
void	removeGridModelListener(GridModelListener l) Removes a listener from the list that's notified each time a change to the data model occurs.
void	setValueAt(java.lang.Object aValue, int row, int column) Sets the value in the cell at column and row to aValue.

Methods inherited from class com.eliad.model.AbstractGenericModel

getListenerCount, getListeners

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractGridModel

public AbstractGridModel()

Method Detail

isCellEditable

public boolean isCellEditable(int row,
                              int column)

Returns whether the cell at row and column is editable. The default implementation for all cells is false.

Specified by:

isCellEditable in interface GridModel

Parameters:

row - the row being queried

column - the column being queried

Returns:

false

setValueAt

public void setValueAt(java.lang.Object aValue,
                       int row,
                       int column)

Sets the value in the cell at column and row to aValue. This empty implementation is provided so developpers don't have to implement this method if their data model is not editable.

Specified by:

setValueAt in interface GridModel

Parameters:

aValue - value to assign to cell

row - row of cell

column - column of cell

addGridModelListener

public void addGridModelListener(GridModelListener l)

Adds a listener to the list that's notified each time a change to the data model occurs.

Specified by:

addGridModelListener in interface GridModel

Parameters:

l - the GridModelListener

removeGridModelListener

public void removeGridModelListener(GridModelListener l)

Removes a listener from the list that's notified each time a change to the data model occurs.

Specified by:

removeGridModelListener in interface GridModel

Parameters:

l - the GridModelListener

propagateDataChange

protected void propagateDataChange(GridModelEvent e)

propagateModelChange

protected void propagateModelChange(GridModelEvent e)

propagateStructureChange

protected void propagateStructureChange(GridModelEvent e)

fireGridCellsChanged

public void fireGridCellsChanged(int firstRow,
                                 int firstColumn,
                                 int rowCount,
                                 int columnCount)

Forwards a "data changed" notification event to all GridModelListeners that are registered for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList

fireGridRowsChanged

public void fireGridRowsChanged(int firstRow,
                                int rowCount)

Forwards a "data changed" notification event to all GridModelListeners that are registered for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList

fireGridColumnsChanged

public void fireGridColumnsChanged(int firstColumn,
                                   int columnCount)

Forwards a "data changed" notification event to all GridModelListeners that registered themselves as listeners for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList

fireGridStructureChanged

public void fireGridStructureChanged(int type,
                                     int first,
                                     int count)

Forwards a "structure incrementally changed" notification event to all GridModelListeners that registered themselves as listeners for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList

fireGridModelChanged

public void fireGridModelChanged()

Forwards a "structure totally changed" notification event to all GridModelListeners that registered themselves as listeners for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList

fireGridRowsInserted

public void fireGridRowsInserted(int firstRow,
                                 int rowCount)

Forwards a rows added notification event to all GridModelListeners that registered themselves as listeners for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList

fireGridRowsDeleted

public void fireGridRowsDeleted(int firstRow,
                                int rowCount)

Forwards a rows removed notification event to all GridModelListeners that registered themselves as listeners for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList

fireGridColumnsInserted

public void fireGridColumnsInserted(int firstColumn,
                                    int columnCount)

Forwards a columns added notification event to all GridModelListeners that registered themselves as listeners for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList

fireGridColumnsDeleted

public void fireGridColumnsDeleted(int firstColumn,
                                   int columnCount)

Forwards a columns removed notification event to all GridModelListeners that registered themselves as listeners for this grid model.

See Also:

addGridModelListener(com.eliad.model.GridModelListener), GridModelEvent, EventListenerList