source: josm/trunk/src/org/openstreetmap/josm/gui/layer/markerlayer/MarkerProducers.java@ 1169

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

import java.io.File;

import org.openstreetmap.josm.data.gpx.WayPoint;

/**
 * This interface has to be implemented by anyone who wants to create markers.
 *
 * When reading a gpx file, all implementations of MarkerMaker registered with
 * the Marker are consecutively called until one returns a Marker object.
 *
 * @author Frederik Ramm <frederik@remote.org>
 */
public interface MarkerProducers {
    /**
     * Returns a Marker object if this implementation wants to create one for the
     * given input data, or <code>null</code> otherwise.
     *
     * @param wp waypoint data
     * @param relativePath An path to use for constructing relative URLs or
     *        <code>null</code> for no relative URLs
     * @return A Marker object, or <code>null</code>.
     */
    public Marker createMarker(WayPoint wp, File relativePath, MarkerLayer parentLayer, double time, double offset);
}