| /******************************************************************************* |
| * Copyright (c) 2003, 2013 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.sourcelookup; |
| |
| import java.util.List; |
| |
| import org.eclipse.debug.core.sourcelookup.ISourceContainer; |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.actions.SelectionListenerAction; |
| |
| /** |
| * The action used to move source containers up in the list |
| */ |
| public class UpAction extends SourceContainerAction { |
| |
| public UpAction() { |
| super(SourceLookupUIMessages.sourceTab_upButton); |
| } |
| /** |
| * Moves all selected entries up one position (if possible). |
| * |
| * @see IAction#run() |
| */ |
| @Override |
| public void run() { |
| List<ISourceContainer> targets = getOrderedSelection(); |
| if (targets.isEmpty()) { |
| return; |
| } |
| int top = 0; |
| int index = 0; |
| List<ISourceContainer> list = getEntriesAsList(); |
| for (ISourceContainer container : targets) { |
| index = list.indexOf(container); |
| if (index > top) { |
| top = index - 1; |
| ISourceContainer temp = list.get(top); |
| list.set(top, container); |
| list.set(index, temp); |
| } |
| top = index; |
| } |
| setEntries(list); |
| } |
| |
| /** |
| * @see SelectionListenerAction#updateSelection(IStructuredSelection) |
| */ |
| @Override |
| protected boolean updateSelection(IStructuredSelection selection) { |
| //check that something is selected, it's not first in the list, and it is a root tree node. |
| return !selection.isEmpty() && !isIndexSelected(selection, 0) && getViewer().getTree().getSelection()[0].getParentItem()==null; |
| } |
| |
| } |