teropa.globetrotter.client.Demo.java Source code

Introduction

Here is the source code for teropa.globetrotter.client.Demo.java

Source

package teropa.globetrotter.client;

import java.util.ArrayList;
import java.util.List;

import teropa.globetrotter.client.common.Position;
import teropa.globetrotter.client.controls.CopyrightText;
import teropa.globetrotter.client.controls.Panner;
import teropa.globetrotter.client.controls.Zoomer;
import teropa.globetrotter.client.marker.Marker;
import teropa.globetrotter.client.marker.MarkerClickEvent;
import teropa.globetrotter.client.marker.MarkerLayer;
import teropa.globetrotter.client.osm.OpenStreetMapLayer;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.RootPanel;

public class Demo implements EntryPoint {

    public void onModuleLoad() {
        final Map map = new Map("100%", "100%");
        map.setResolutions(OpenStreetMapLayer.SUPPORTED_RESOLUTIONS, 4);

        initBaseLayer(map);
        initMarkerLayer(map);
        initControls(map);

        // Tell the map to recalculate its layout when window size changes
        Window.addResizeHandler(new ResizeHandler() {
            public void onResize(ResizeEvent event) {
                map.onResize();
            }
        });

        RootPanel.get("container").add(map);
    }

    private void initBaseLayer(final Map map) {
        OpenStreetMapLayer base = new OpenStreetMapLayer("http://tile.openstreetmap.org/", "Mapnik", true);
        map.addLayer(base);
    }

    private void initMarkerLayer(final Map map) {
        MarkerLayer markerLayer = new MarkerLayer("Capitals");

        List<Marker> markers = new ArrayList<Marker>();
        for (DemoCities.City city : DemoCities.CITIES) {
            markers.add(new Marker(city.getLonLat()));
        }
        markerLayer.addMarkers(markers);

        markerLayer.addMarkerClickHandler(new MarkerClickEvent.Handler() {
            public void onMarkerClick(MarkerClickEvent evt) {
                Window.alert("Marker clicked.");
            }
        });

        map.addLayer(markerLayer);

    }

    private void initControls(final Map map) {
        map.addControl(new Panner(), Position.TOP_LEFT);
        map.addControl(new Zoomer(), Position.MIDDLE_LEFT);

        HTML copy = new HTML(
                "(c) <a href=\"http://www.openstreetmap.org/\">OpenStreetMap</a> (and) contributors, <a href=\"http://creativecommons.org/licenses/by-sa/2.0/\">CC-BY-SA</a>");
        map.addControl(new CopyrightText(copy), Position.BOTTOM_LEFT);
    }

}