org.simantics.district.maps/src/org/simantics/maps/eclipse/TileJob.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.maps.eclipse;
  13
  14 import java.awt.Image;
  15
  16 import org.eclipse.core.runtime.IProgressMonitor;
  17 import org.eclipse.core.runtime.IStatus;
  18 import org.eclipse.core.runtime.Status;
  19 import org.eclipse.core.runtime.jobs.Job;
  20 import org.simantics.maps.query.Query;
  21 import org.simantics.maps.tile.ITileProvider;
  22 import org.simantics.maps.tile.TileKey;
  23
  24 /**
  25  * @author Tuukka Lehtonen
  26  * @see TileJobQueue
  27  */
  28 public class TileJob extends Job {
  29
  30     private ITileProvider provider;
  31     private Query<TileKey, Image> query;
  32
  33     public TileJob(Query<TileKey, Image> query, ITileProvider provider) {
  34         super("Raster Map Request Job");
  35         assert(query != null);
  36         this.query = query;
  37         this.provider = provider;
  38     }
  39
  40     public Query<TileKey, Image> getQuery() {
  41         return query;
  42     }
  43
  44     @Override
  45     protected IStatus run(IProgressMonitor monitor) {
  46         setThread(Thread.currentThread());
  47         monitor.beginTask("Querying map data", 1);
  48         try {
  49             // Check if canceled
  50             if (monitor.isCanceled()) {
  51                 cancel();
  52                 return Status.CANCEL_STATUS;
  53             }
  54             // Query
  55             try {
  56                 monitor.subTask(query.source.toString());
  57                 Image result = provider.get(query.source);
  58                 query.listener.queryComplete(query, result);
  59             } catch (Exception e) {
  60                 query.listener.queryFailed(query, e);
  61             }
  62             monitor.worked(1);
  63             monitor.subTask("");
  64         } finally {
  65             monitor.done();
  66         }
  67         return Status.OK_STATUS;
  68     }
  69
  70 }