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/*******************************************************************************
* Copyright (c) 2003, 2005 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.internal.ui.sourcelookup;
import java.util.List;
import org.eclipse.jface.viewers.IStructuredSelection;
/**
* The action for sorting the order of source containers in the dialog.
*
*/
public class DownAction extends SourceContainerAction {
public DownAction() {
super(SourceLookupUIMessages.getString( "DownAction.0" )); //$NON-NLS-1$
}
/**
* @see IAction#run()
*/
public void run() {
List targets = getOrderedSelection();
if (targets.isEmpty()) {
return;
}
List list = getEntriesAsList();
int bottom = list.size() - 1;
int index = 0;
for (int i = targets.size() - 1; i >= 0; i--) {
Object target = targets.get(i);
index = list.indexOf(target);
if (index < bottom) {
bottom = index + 1;
Object temp = list.get(bottom);
list.set(bottom, target);
list.set(index, temp);
}
bottom = index;
}
setEntries(list);
}
/**
* @see SelectionListenerAction#updateSelection(IStructuredSelection)
*/
protected boolean updateSelection(IStructuredSelection selection) {
return !selection.isEmpty() && !isIndexSelected(selection, getEntriesAsList().size() - 1) && getViewer().getTree().getSelection()[0].getParentItem()==null;
}
}
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