org.wicketstuff.openlayers.MapWithGetSpecificFeaturePage.java Source code

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Here is the source code for org.wicketstuff.openlayers.MapWithGetSpecificFeaturePage.java

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/*
 * 
 * ==============================================================================
 * 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.wicketstuff.openlayers;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;

import org.apache.wicket.ajax.AbstractDefaultAjaxBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.request.cycle.RequestCycle;
import org.apache.wicket.request.http.WebRequest;
import org.wicketstuff.openlayers.api.Control;
import org.wicketstuff.openlayers.api.LonLat;
import org.wicketstuff.openlayers.api.control.GetSpecificFeature;
import org.wicketstuff.openlayers.api.layer.Layer;
import org.wicketstuff.openlayers.api.layer.WMS;
import org.wicketstuff.openlayers.js.JSUtils;
import org.wicketstuff.openlayers.proxy.WFSProxyBehavior;

/**
 * @author mocleiri
 * 
 */
public class MapWithGetSpecificFeaturePage extends WebPage {

    private static final long serialVersionUID = 1L;

    /**
     * 
     */
    public MapWithGetSpecificFeaturePage() {

        super();
        List<Layer> layerList = new LinkedList<Layer>();

        // function init(){
        // OpenLayers.ProxyHost= "proxy.cgi?url=";
        // map = new OpenLayers.Map('map', {
        // controls: [
        // new OpenLayers.Control.PanZoom(),
        // new OpenLayers.Control.Permalink(),
        // new OpenLayers.Control.Navigation()
        // ]
        // });
        // layer = new OpenLayers.Layer.WMS(
        // "States WMS/WFS",
        // "http://demo.opengeo.org/geoserver/ows",
        // {layers: 'topp:states', format: 'image/gif'}
        // );

        HashMap<String, String> options = new LinkedHashMap<String, String>();

        options.put("layers", JSUtils.getQuotedString("topp:states"));
        options.put("format", JSUtils.getQuotedString("image/png8"));
        options.put("srs", JSUtils.getQuotedString("EPSG:4326"));

        WMS layer = new WMS("States WMS/WFS", "http://demo.opengeo.org:80/geoserver/wms", options);

        layerList.add(layer);

        final WFSProxyBehavior proxyBehaviour = new WFSProxyBehavior();

        final AbstractDefaultAjaxBehavior callbackBehaviour = new AbstractDefaultAjaxBehavior() {

            private static final long serialVersionUID = 1L;

            @Override
            protected void respond(AjaxRequestTarget target) {

                RequestCycle rc = RequestCycle.get();

                WebRequest wr = (WebRequest) rc.getRequest();

                String state = wr.getRequestParameters().getParameterValue("propertyValue").toString();

                target.prependJavaScript("alert('you selected state = " + state + ");");

            }
        };

        GetSpecificFeature control = new GetSpecificFeature(layer, proxyBehaviour, callbackBehaviour,
                "http://demo.opengeo.org:80/geoserver/wms", "topp", "http://www.openplans.org/topp", "states", 4326,
                "STATE_NAME");

        HashMap<String, String> mapOptions = new LinkedHashMap<String, String>();

        mapOptions.put("projection", JSUtils.getQuotedString("EPSG:4326"));
        mapOptions.put("units", JSUtils.getQuotedString("degrees"));
        // mapOptions.put("maxExtent",
        // "new OpenLayers.Bounds(143.834,-43.648,148.479,-39.573)");

        OpenLayersMap map = new OpenLayersMap("map", true, layerList, mapOptions) {

            private static final long serialVersionUID = 1L;

            /*
             * (non-Javadoc)
             * 
             * @see org.wicketstuff.openlayers.OpenLayersMap#getJSinit()
             */
            @Override
            protected String getJSinit() {
                return "OpenLayers.ProxyHost='" + proxyBehaviour.getProxyUrl() + "';\n" + super.getJSinit();
            }

        };

        map.setCenter(LonLat.parse("-140.444336,25.115234,-44.438477,50.580078"));

        map.setZoom(3);

        map.addControl(control);
        map.addControl(Control.PanZoomBar);
        map.addControl(Control.Navigation);
        map.addControl(Control.Permalink);

        map.add(proxyBehaviour);
        map.add(callbackBehaviour);

        add(map);

    }

}