/******************************************************************************
* Copyright (c) 2014 Oracle
* 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:
* Konstantin Komissarchik - initial implementation and ongoing maintenance
******************************************************************************/
package org.eclipse.sapphire.ui.forms.internal;
import org.eclipse.sapphire.Element;
import org.eclipse.sapphire.ElementList;
import org.eclipse.sapphire.ui.Presentation;
import org.eclipse.sapphire.ui.forms.MasterDetailsContentNodePart;
/**
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public class OutlineNodeMoveDownActionHandler extends OutlineNodeMoveActionHandler
{
public static final String ID = "Sapphire.Outline.Move.Down";
public OutlineNodeMoveDownActionHandler()
{
setId( ID );
}
@Override
@SuppressWarnings( "unchecked" )
protected Object run( final Presentation context )
{
final MasterDetailsContentNodePart node = (MasterDetailsContentNodePart) getPart();
final Element element = node.getModelElement();
final ElementList<Element> list = (ElementList<Element>) element.parent();
list.moveDown( element );
return null;
}
@Override
protected boolean computeEnabledState()
{
boolean enabled = super.computeEnabledState();
if( enabled )
{
final Element element = getModelElement();
final ElementList<?> list = (ElementList<?>) element.parent();
enabled = ( list.indexOf( element ) < ( list.size() - 1 ) );
}
return enabled;
}
}