/*******************************************************************************
* Copyright (c) 2012, 2013 Original authors and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Original authors and others - initial API and implementation
******************************************************************************/
package org.eclipse.nebula.widgets.nattable.extension.glazedlists.groupBy.command;
import org.eclipse.nebula.widgets.nattable.command.AbstractLayerCommandHandler;
import org.eclipse.nebula.widgets.nattable.command.ILayerCommandHandler;
import org.eclipse.nebula.widgets.nattable.extension.glazedlists.groupBy.GroupByHeaderLayer;
import org.eclipse.nebula.widgets.nattable.extension.glazedlists.groupBy.GroupByModel;
import org.eclipse.nebula.widgets.nattable.layer.event.VisualRefreshEvent;
/**
* The {@link ILayerCommandHandler} for handling
* {@link GroupByColumnIndexCommand}s.
*/
public class GroupByColumnCommandHandler extends
AbstractLayerCommandHandler<GroupByColumnIndexCommand> {
private final GroupByHeaderLayer groupByHeaderLayer;
/**
* @param groupByHeaderLayer
* The {@link GroupByHeaderLayer} to which this command handler
* is registered to. Is needed to modify the {@link GroupByModel}
* and fire the update events.
*/
public GroupByColumnCommandHandler(GroupByHeaderLayer groupByHeaderLayer) {
this.groupByHeaderLayer = groupByHeaderLayer;
}
@Override
protected boolean doCommand(GroupByColumnIndexCommand command) {
int columnIndex = command.getGroupByColumnIndex();
if (groupByHeaderLayer.getGroupByModel().addGroupByColumnIndex(
columnIndex)) {
groupByHeaderLayer.fireLayerEvent(new VisualRefreshEvent(
groupByHeaderLayer));
}
return true;
}
@Override
public Class<GroupByColumnIndexCommand> getCommandClass() {
return GroupByColumnIndexCommand.class;
}
}