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package org.traccar.web.client.view;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.gwtopenmaps.openlayers.client.Icon;
import org.gwtopenmaps.openlayers.client.Marker;
import org.gwtopenmaps.openlayers.client.feature.VectorFeature;
import org.gwtopenmaps.openlayers.client.geometry.LineString;
import org.gwtopenmaps.openlayers.client.geometry.Point;
import org.gwtopenmaps.openlayers.client.layer.Markers;
import org.gwtopenmaps.openlayers.client.layer.Vector;
import org.traccar.web.shared.model.Device;
import org.traccar.web.shared.model.Position;
public class MapPositionRenderer {
private final MapView mapView;
private final Vector vectorLayer;
private final Markers markerLayer;
private final MarkerIconFactory.IconType iconType;
public MapPositionRenderer(MapView mapView, MarkerIconFactory.IconType iconType) {
this.mapView = mapView;
vectorLayer = mapView.getVectorLayer();
markerLayer = mapView.getMarkerLayer();
this.iconType = iconType;
}
/*
* TODO: a lot of mess here
* 1. changeMarkerIcon doesn't save new marker
* 2. if device selected save device instead of position
* 3. find way to change marker icon
* 4. shorter cleaner methods
* ... maybe something else
*/
private void changeMarkerIcon(Marker marker, Icon icon) {
Marker newMarker = new Marker(marker.getLonLat(), icon);
markerLayer.removeMarker(marker);
markerLayer.addMarker(newMarker);
}
private Map<Long, Marker> markerMap = new HashMap<Long, Marker>(); // Position.id -> Marker
private Map<Long, Long> deviceMap = new HashMap<Long, Long>(); // Device.id -> Position.id
private Long selectedPositionId;
public void showPositions(List<Position> positions) {
for (Marker marker : markerMap.values()) {
markerLayer.removeMarker(marker);
}
markerMap.clear();
deviceMap.clear();
for (Position position : positions) {
Marker marker = new Marker(
mapView.createLonLat(position.getLongitude(), position.getLatitude()),
MarkerIconFactory.getIcon(iconType, false));
markerMap.put(position.getId(), marker);
deviceMap.put(position.getDevice().getId(), position.getId());
markerLayer.addMarker(marker);
}
if (selectedPositionId != null) {
selectPosition(null, selectedPositionId, false);
}
}
public void showTrack(List<Position> positions) {
vectorLayer.destroyFeatures();
if (!positions.isEmpty()) {
Point[] linePoints = new Point[positions.size()];
int i = 0;
for (Position position : positions) {
linePoints[i++] = mapView.createPoint(position.getLongitude(), position.getLatitude());
}
LineString lineString = new LineString(linePoints);
vectorLayer.addFeature(new VectorFeature(lineString));
//mapView.getMap().zoomToExtent(lineString.getBounds());
}
}
public void selectPosition(Position position, boolean center) {
selectPosition(selectedPositionId, position.getId(), center);
}
public void selectDevice(Device device, boolean center) {
Long positionId = (device != null) ? deviceMap.get(device.getId()) : null;
selectPosition(selectedPositionId, positionId, center);
}
private void selectPosition(Long oldPositionId, Long newPositionId, boolean center) {
if (oldPositionId != null && markerMap.containsKey(oldPositionId)) {
changeMarkerIcon(markerMap.get(oldPositionId), MarkerIconFactory.getIcon(iconType, false));
selectedPositionId = null;
}
if (newPositionId != null && markerMap.containsKey(newPositionId)) {
Marker marker = markerMap.get(newPositionId);
changeMarkerIcon(marker, MarkerIconFactory.getIcon(iconType, true));
if (center) {
mapView.getMap().panTo(marker.getLonLat());
}
selectedPositionId = newPositionId;
}
}
}
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