1 files changed, 114 insertions, 0 deletions
diff --git a/src/org/traccar/web/client/view/MapPositionRenderer.java b/src/org/traccar/web/client/view/MapPositionRenderer.java
new file mode 100644
index 00000000..5a756c78
--- /dev/null
+++ b/src/org/traccar/web/client/view/MapPositionRenderer.java
@@ -0,0 +1,114 @@
+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;
+        }
+    }
+
+}