// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.data;

import java.util.HashSet;
import java.util.Set;

import javax.swing.JOptionPane;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.gui.layer.Layer;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;

public class DataSetChecker {

	public static void check() {
		if (Main.map == null)
			return;

		Set<OsmPrimitive> s = new HashSet<OsmPrimitive>();
		for (Layer l : Main.map.mapView.getAllLayers()) {
			if (l instanceof OsmDataLayer) {
				for (OsmPrimitive osm : ((OsmDataLayer)l).data.allPrimitives()) {
					if (s.contains(osm)) {
		                JOptionPane.showMessageDialog(Main.parent, "cross references");
		                return;
					}
					s.add(osm);
				}
			}
		}
		
		if (Main.map.mapView.getActiveLayer() instanceof OsmDataLayer) {
			OsmDataLayer l = (OsmDataLayer)Main.map.mapView.getActiveLayer();
			if (l.data != Main.ds) {
				JOptionPane.showMessageDialog(Main.parent, "Main.ds / active layer mismatch");
				return;
			}
		}

		JOptionPane.showMessageDialog(Main.parent, "working");
	}
}