taverna-workbench-results-view/src/main/java/net/sf/taverna/t2/workbench/views/results/InvocationTreeModel.java

/*******************************************************************************
 * Copyright (C) 2013 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.workbench.views.results;

import static javax.swing.SwingUtilities.invokeLater;

import java.util.HashMap;
import java.util.Map;
import java.util.SortedSet;

import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.MutableTreeNode;

import net.sf.taverna.t2.workbench.ui.Updatable;
import uk.org.taverna.platform.report.Invocation;
import uk.org.taverna.platform.report.StatusReport;

/**
 * TreeModel for displaying invocations.
 *
 * @author David Withers
 */
@SuppressWarnings("serial")
public class InvocationTreeModel extends DefaultTreeModel implements Updatable {
	private final StatusReport<?, ?> report;
	private Map<String, InvocationTreeNode> nodes = new HashMap<>();

	/**
	 * Constructs a new TreeModel for displaying invocations.
	 *
	 * @param report
	 *            the report to display
	 */
	public InvocationTreeModel(StatusReport<?, ?> report) {
		super(new DefaultMutableTreeNode());
		this.report = report;
		updateTree(report.getInvocations());
	}

	public InvocationTreeNode getFirstInvocationNode() {
		return nodes.get(report.getInvocations().first().getId());
	}

	private void updateTree(SortedSet<Invocation> invocations) {
		for (Invocation invocation : invocations) {
			String invocationId = invocation.getId();
			if (!nodes.containsKey(invocationId))
				nodes.put(invocationId, createNode(invocation));
		}
	}

	private InvocationTreeNode createNode(Invocation invocation) {
		InvocationTreeNode node = new InvocationTreeNode(invocation);
		Invocation parent = invocation.getParent();
		if (parent != null) {
			Invocation grandParent = parent.getParent();
			if (grandParent != null) {
				Invocation greatGrandParent = grandParent.getParent();
				if (greatGrandParent != null) {
					String invocationId = greatGrandParent.getId();
					if (!nodes.containsKey(invocationId))
						nodes.put(invocationId, createNode(greatGrandParent));
					MutableTreeNode parentNode = nodes.get(invocationId);
					insertNodeInto(node, parentNode, parentNode.getChildCount());
					return node;
				}
			}
		}

		MutableTreeNode parentNode = ((MutableTreeNode) getRoot());
		insertNodeInto(node, parentNode, parentNode.getChildCount());
		return node;
	}

	@Override
	public void update() {
		invokeLater(new Runnable() {
			@Override
			public void run() {
				updateTree(report.getInvocations());
			}
		});
	}
}