org.onebusaway.webapp.gwt.oba_application.view.SearchOriginMapPresenter.java Source code

Introduction

Here is the source code for org.onebusaway.webapp.gwt.oba_application.view.SearchOriginMapPresenter.java

Source

/**
 * Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.onebusaway.webapp.gwt.oba_application.view;

import org.onebusaway.webapp.gwt.common.MapOverlayManager;
import org.onebusaway.webapp.gwt.common.resources.map.MapResources;
import org.onebusaway.webapp.gwt.oba_application.control.StateEvent;
import org.onebusaway.webapp.gwt.oba_application.control.StateEventListener;
import org.onebusaway.webapp.gwt.oba_application.control.state.SearchLocationUpdatedState;
import org.onebusaway.webapp.gwt.oba_application.control.state.State;
import org.onebusaway.webapp.gwt.oba_application.model.LocationQueryModel;

import com.google.gwt.maps.client.geom.LatLng;
import com.google.gwt.maps.client.geom.Point;
import com.google.gwt.maps.client.geom.Size;
import com.google.gwt.maps.client.overlay.Icon;
import com.google.gwt.maps.client.overlay.Marker;
import com.google.gwt.maps.client.overlay.MarkerOptions;
import com.google.gwt.resources.client.DataResource;

public class SearchOriginMapPresenter implements StateEventListener {

    private LocationQueryModel _queryModel;

    private MapOverlayManager _mapOverlayManager;

    private Marker _marker;

    public void setLocationQueryModel(LocationQueryModel queryModel) {
        _queryModel = queryModel;
    }

    public void setMapOverlayManager(MapOverlayManager manager) {
        _mapOverlayManager = manager;
    }

    public void handleUpdate(StateEvent event) {

        State state = event.getState();

        if (state instanceof SearchLocationUpdatedState) {

            if (_marker != null) {
                _mapOverlayManager.removeOverlay(_marker);
                _marker = null;
            }

            LatLng location = _queryModel.getLocation();

            if (location == null) {
                System.err.println("PROBLEM!");
                return;
            }

            MapResources resources = MapResources.INSTANCE;
            DataResource resource = resources.getImageRouteStart();
            Icon icon = Icon.newInstance();
            icon.setImageURL(resource.getUrl());
            icon.setIconSize(Size.newInstance(20, 34));
            icon.setIconAnchor(Point.newInstance(10, 34));
            MarkerOptions opts = MarkerOptions.newInstance(icon);

            _marker = new Marker(location, opts);
            _mapOverlayManager.addOverlay(_marker);
        }

    }
}