Package org.eclipse.nebula.widgets.nattable.datachange

Class AbstractDataChangeHandler<T extends DataChange>

java.lang.Object

org.eclipse.nebula.widgets.nattable.datachange.AbstractDataChangeHandler<T>

All Implemented Interfaces:

DataChangeHandler

Direct Known Subclasses:

RowDeleteDataChangeHandler, RowInsertDataChangeHandler, UpdateDataChangeHandler

public abstract class AbstractDataChangeHandler<T extends DataChange>
extends Object
implements DataChangeHandler

Abstract implementation of DataChangeHandler to handle data updates.

Since:

1.6

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<Object,T>	dataChanges	Collection of modified identifiers according to the used CellKeyHandler and corresponding DataChanges that are collected in this handler.
protected boolean	handleDataUpdate	Flag that is used to temporarily disable event handling.
protected CellKeyHandler	keyHandler	The CellKeyHandler that is used to store dataChanges for a specific key.
protected DataChangeLayer	layer	The DataChangeLayer this handler is assigned to.

Constructor Summary

Constructors

Constructor	Description
AbstractDataChangeHandler(DataChangeLayer layer, CellKeyHandler<?> keyHandler, Map<Object,T> dataChanges)

Method Summary

Modifier and Type	Method	Description
void	clearDataChanges()	Clear the locally stored changes.
void	disableTracking()	Disable tracking of data changes to avoid tracking of changes that are caused by save or discard operations.
void	enableTracking()	Enable tracking of data changes to keep track of all changes.
Map<Object,T>	getDataChanges()
CellKeyHandler<?>	getKeyHandler()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.nebula.widgets.nattable.datachange.DataChangeHandler

handleStructuralChange, isCellDirty, isColumnDirty, isRowDirty

Field Detail

layer

protected final DataChangeLayer layer

The DataChangeLayer this handler is assigned to.

keyHandler

protected final CellKeyHandler keyHandler

The CellKeyHandler that is used to store dataChanges for a specific key.

dataChanges

protected final Map<Object,T extends DataChange> dataChanges

Collection of modified identifiers according to the used CellKeyHandler and corresponding DataChanges that are collected in this handler.

handleDataUpdate

protected boolean handleDataUpdate

Flag that is used to temporarily disable event handling. Used to not handle DataUpdateEvents on discard.

Constructor Detail

AbstractDataChangeHandler

public AbstractDataChangeHandler(DataChangeLayer layer,
                                 CellKeyHandler<?> keyHandler,
                                 Map<Object,T> dataChanges)

Parameters:

layer - The DataChangeLayer this handler should be assigned to.

keyHandler - The CellKeyHandler that is used to store data changes for a specific key.

dataChanges - The map to track the data changes locally.

Method Detail

disableTracking

public void disableTracking()

Description copied from interface: DataChangeHandler

Disable tracking of data changes to avoid tracking of changes that are caused by save or discard operations.

Specified by:

disableTracking in interface DataChangeHandler

enableTracking

public void enableTracking()

Description copied from interface: DataChangeHandler

Enable tracking of data changes to keep track of all changes.

Specified by:

enableTracking in interface DataChangeHandler

clearDataChanges

public void clearDataChanges()

Description copied from interface: DataChangeHandler

Clear the locally stored changes.

Specified by:

clearDataChanges in interface DataChangeHandler

getKeyHandler

public CellKeyHandler<?> getKeyHandler()

Returns:

The CellKeyHandler that is used to store dataChanges for a specific key.

getDataChanges

public Map<Object,T> getDataChanges()

Returns:

Collection of modified identifiers according to the used CellKeyHandler and corresponding DataChanges that are collected in this handler.