fi.racetrace.adminpanel.ui.VolLatLngPicker.java Source code

Introduction

Here is the source code for fi.racetrace.adminpanel.ui.VolLatLngPicker.java

Source

/*
 *  This file is part of RaceTrace-Adminpanel
 *  Copyright (C) 2012 Vaadin Oy
 *  Copyright (C) 2013 Jonni Nakari <jonni@egarden.fi>
    
 *  RaceTrace-Adminpanel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
    
 *  RaceTrace-Adminpanel is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
    
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package fi.racetrace.adminpanel.ui;

import org.vaadin.vol.OpenLayersMap;
import org.vaadin.vol.OpenStreetMapLayer;
import org.vaadin.vol.Point;
import org.vaadin.vol.PointVector;
import org.vaadin.vol.VectorLayer;
import org.vaadin.vol.VectorLayer.DrawingMode;
import org.vaadin.vol.VectorLayer.VectorDrawnEvent;
import org.vaadin.vol.VectorLayer.VectorDrawnListener;

import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Field;

public class VolLatLngPicker extends CustomComponent {
    private final OpenLayersMap map = new OpenLayersMap();
    private Field<String> latField;
    private Field<String> lonField;
    private VectorLayer markerLayer;
    private double centerLon;
    private double centerLat;
    private PointVector pointVector;

    public VolLatLngPicker(double centerLon, double centerLat) {
        this.centerLon = centerLon;
        this.centerLat = centerLat;

        setCompositionRoot(map);

        map.setCenter(centerLon, centerLat);
        map.setZoom(10);
        map.setWidth(400, Unit.PIXELS);
        map.setHeight(400, Unit.PIXELS);
        map.setImmediate(true);
        // base layer
        map.addLayer(new OpenStreetMapLayer());
        // vector layer where user can draw his desired location
        VectorLayer vl = new VectorLayer();
        map.addLayer(vl);
        vl.setImmediate(true);

        vl.setDrawindMode(DrawingMode.POINT);
        vl.addListener(new VectorDrawnListener() {
            @Override
            public void vectorDrawn(VectorDrawnEvent event) {
                PointVector v = (PointVector) event.getVector();
                Point point = v.getPoint();
                locationSelected(point);
            }
        });

        updateMarker();

    }

    private void updateMarker() {
        if (markerLayer == null) {
            markerLayer = new VectorLayer();
            map.addLayer(markerLayer);
        }

        if (pointVector == null) {
            pointVector = new PointVector(centerLon, centerLat);
            // pointVector.setStyleName("marker");
            markerLayer.addVector(pointVector);
        }
        Point[] points = { new Point(centerLon, centerLat) };
        pointVector.setPoints(points);
    }

    public void setLatField(Field<String> field) {
        latField = field;
    }

    public void setLonField(Field<String> field) {
        lonField = field;
    }

    public void locationSelected(Point point) {
        centerLat = point.getLat();
        centerLon = point.getLon();
        latField.setValue("" + centerLat);
        lonField.setValue("" + centerLon);
        map.setCenter(centerLon, centerLat);
        updateMarker();
    }
}