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package org.traccar.web.client.view;
import java.util.AbstractMap;
import java.util.HashMap;
import java.util.List;
import org.gwtopenmaps.openlayers.client.Icon;
import org.gwtopenmaps.openlayers.client.LonLat;
import org.gwtopenmaps.openlayers.client.Map;
import org.gwtopenmaps.openlayers.client.MapOptions;
import org.gwtopenmaps.openlayers.client.MapWidget;
import org.gwtopenmaps.openlayers.client.Marker;
import org.gwtopenmaps.openlayers.client.Pixel;
import org.gwtopenmaps.openlayers.client.Projection;
import org.gwtopenmaps.openlayers.client.Size;
import org.gwtopenmaps.openlayers.client.control.ScaleLine;
import org.gwtopenmaps.openlayers.client.layer.Markers;
import org.gwtopenmaps.openlayers.client.layer.OSM;
import org.traccar.web.shared.model.Device;
import org.traccar.web.shared.model.Position;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.user.client.Command;
import com.sencha.gxt.widget.core.client.ContentPanel;
class MarkerIconFactory {
private static final Size iconSize = new Size(21, 25);
private static final Pixel iconOffset = new Pixel(-10.5f, -25.0f);
private static final String iconUrl = "http://www.openlayers.org/api/img/";
private static final String iconRed = iconUrl + "marker.png";
private static final String iconBlue = iconUrl + "marker-blue.png";
private static final String iconGreen = iconUrl + "marker-green.png";
private static final String iconGold = iconUrl + "marker-gold.png";
public static Icon getLocationIcon() {
return new Icon(iconRed, iconSize, iconOffset);
}
public static Icon getSelectedLocationIcon() {
return new Icon(iconGreen, iconSize, iconOffset);
}
public static Icon getArchiveIcon() {
return new Icon(iconBlue, iconSize, iconOffset);
}
public static Icon getSelectedArchiveIcon() {
return new Icon(iconGold, iconSize, iconOffset);
}
}
public class MapView {
private ContentPanel contentPanel;
public ContentPanel getView() {
return contentPanel;
}
private MapWidget mapWidget;
private Map map;
private Markers markerLayer;
private LonLat createPoint(double longitude, double latitude) {
LonLat point = new LonLat(longitude, latitude);
point.transform(new Projection("EPSG:4326").getProjectionCode(), map.getProjection());
return point;
}
public MapView() {
contentPanel = new ContentPanel();
contentPanel.setHeadingText("Map");
MapOptions defaultMapOptions = new MapOptions();
defaultMapOptions.setNumZoomLevels(16);
mapWidget = new MapWidget("100%", "100%", defaultMapOptions);
map = mapWidget.getMap();
OSM mapLayer = OSM.Mapnik("Mapnik");
mapLayer.setIsBaseLayer(true);
markerLayer = new Markers("Markers");
map.addLayer(mapLayer);
map.addLayer(markerLayer);
map.addControl(new ScaleLine());
map.setCenter(createPoint(30, 60), 1);
contentPanel.add(mapWidget);
// Update map size
contentPanel.addResizeHandler(new ResizeHandler() {
@Override
public void onResize(ResizeEvent event) {
Scheduler.get().scheduleDeferred(new Command() {
@Override
public void execute() {
map.updateSize();
}
});
}
});
}
private AbstractMap<Long, Marker> markerMap = new HashMap<Long, Marker>();
private Device selectedDevice;
public void showPositions(List<Position> positions) {
markerMap.clear();
markerLayer.clearMarkers();
for (Position position : positions) {
Marker marker = new Marker(
createPoint(position.getLongitude(), position.getLatitude()), MarkerIconFactory.getLocationIcon());
markerMap.put(position.getDevice().getId(), marker);
markerLayer.addMarker(marker);
}
if (selectedDevice != null) {
select(selectedDevice, false);
}
}
private void changeMarkerIcon(Marker marker, Icon icon) {
Marker newMarker = new Marker(marker.getLonLat(), icon);
markerLayer.removeMarker(marker);
markerLayer.addMarker(newMarker);
}
public void select(Device device, boolean center) {
if (selectedDevice != null) {
changeMarkerIcon(markerMap.get(selectedDevice.getId()), MarkerIconFactory.getLocationIcon());
selectedDevice = null;
}
if (device != null && markerMap.containsKey(device.getId())) {
Marker marker = markerMap.get(device.getId());
if (center) {
map.panTo(marker.getLonLat());
}
changeMarkerIcon(marker, MarkerIconFactory.getSelectedLocationIcon());
selectedDevice = device;
}
}
}
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