/*******************************************************************************
 * Copyright (c) 2012 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.maps.eclipse;

import java.awt.Image;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.simantics.maps.query.Query;
import org.simantics.maps.tile.ITileProvider;
import org.simantics.maps.tile.TileKey;

/**
 * @author Tuukka Lehtonen
 * @see TileJobQueue
 */
public class TileJob extends Job {

    private ITileProvider provider;
    private Query<TileKey, Image> query;

    public TileJob(Query<TileKey, Image> query, ITileProvider provider) {
        super("Raster Map Request Job");
        assert(query != null);
        this.query = query;
        this.provider = provider;
    }

    public Query<TileKey, Image> getQuery() {
        return query;
    }

    @Override
    protected IStatus run(IProgressMonitor monitor) {
        setThread(Thread.currentThread());
        monitor.beginTask("Querying map data", 1);
        try {
            // Check if canceled
            if (monitor.isCanceled()) {
                cancel();
                return Status.CANCEL_STATUS;
            }
            // Query
            try {
                monitor.subTask(query.source.toString());
                Image result = provider.get(query.source);
                query.listener.queryComplete(query, result);
            } catch (Exception e) {
            	query.listener.queryFailed(query, e);
            }
            monitor.worked(1);
            monitor.subTask("");
        } finally {
            monitor.done();
        }
        return Status.OK_STATUS;
    }

}