| /********************************************************************** |
| * Copyright (C) 2007-2009 The University of Manchester |
| * |
| * Modifications to the initial code base are copyright of their |
| * respective authors, or their employers as appropriate. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public License |
| * as published by the Free Software Foundation; either version 2.1 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| **********************************************************************/ |
| package net.sf.taverna.t2.ui.menu; |
| |
| import java.net.URI; |
| |
| /** |
| * An {@link AbstractMenuAction} that is {@link ContextualMenuComponent} aware. |
| * The contextual selection can be retrieved from |
| * {@link #getContextualSelection()}. |
| * <p> |
| * The cached action will be flushed everytime the contextual selection changes, |
| * forcing a new call to {@link #createAction()} - given that |
| * {@link #isEnabled()} returns true. |
| * |
| * @author Stian Soiland-Reyes |
| */ |
| public abstract class AbstractContextualMenuAction extends AbstractMenuAction |
| implements ContextualMenuComponent { |
| |
| private ContextualSelection contextualSelection; |
| |
| public AbstractContextualMenuAction(URI parentId, int positionHint) { |
| super(parentId, positionHint); |
| } |
| |
| public AbstractContextualMenuAction(URI parentId, int positionHint, URI id) { |
| super(parentId, positionHint, id); |
| } |
| |
| public ContextualSelection getContextualSelection() { |
| return contextualSelection; |
| } |
| |
| @Override |
| public boolean isEnabled() { |
| return contextualSelection != null; |
| } |
| |
| @Override |
| public void setContextualSelection(ContextualSelection contextualSelection) { |
| this.contextualSelection = contextualSelection; |
| // Force new createAction() call |
| action = null; |
| } |
| } |