/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * 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:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.diagram.profile.view;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

import org.simantics.browsing.ui.model.children.ChildRule;
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.exception.DatabaseException;
import org.simantics.diagram.stubs.DiagramResource;
import org.simantics.scenegraph.profile.ProfileUtils;

public class ProfileEntryChildren implements ChildRule {

	@Override
	public boolean isCompatible(Class<?> contentType) {
		return contentType.equals(ProfileTuple.class);
	}

	@Override
	public Collection<?> getChildren(ReadGraph graph, Object parent)
			throws DatabaseException {
		ProfileTuple entry = (ProfileTuple) parent;
		ArrayList<ProfileTuple> entries = new ArrayList<>();
		DiagramResource DIA = DiagramResource.getInstance(graph);
		Resource children = graph.getPossibleObject(entry.getEntry(), DIA.HasEntries);
		if (children != null) {
			for (Resource entry2 : ProfileUtils.getProfileChildrenFromEntries(graph, children))
				entries.add(new ProfileTuple(entry.getBaseProfile(), entry2, entry.getRuntimeDiagram()));
			return entries;
		}
		return Collections.emptyList();
	}

	@Override
	public Collection<?> getParents(ReadGraph graph, Object child)
			throws DatabaseException {
		return Collections.emptyList();
	}

}