125 lines
3.0 KiB
Java
125 lines
3.0 KiB
Java
/**
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*
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*/
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package org.gcube.portlets.widgets.ckandatapublisherwidget.client.openlayerwidget;
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import org.gcube.portlets.widgets.openlayerbasicwidgets.client.event.SelectAreaDialogEvent;
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import org.gcube.portlets.widgets.openlayerbasicwidgets.client.event.SelectAreaDialogEvent.SelectAreaDialogEventHandler;
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import org.gcube.portlets.widgets.openlayerbasicwidgets.client.event.SelectAreaDialogEventType;
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import org.gcube.portlets.widgets.openlayerbasicwidgets.client.widgets.AreaSelectionDialog;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.core.client.JavaScriptObject;
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import com.google.gwt.core.client.JsonUtils;
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import com.google.gwt.json.client.JSONObject;
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import com.google.gwt.user.client.Command;
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/**
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* The Class GeoJsonAreaSelectionDialog.
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*
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* Feb 20, 2019
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*/
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public class GeoJsonAreaSelectionDialog extends AreaSelectionDialog{
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private String wktArea;
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private Command onResponseCommand;
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/**
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* Instantiates a new geo json area selection dialog.
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*/
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public GeoJsonAreaSelectionDialog() {
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//THE HANDLER
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SelectAreaDialogEventHandler handler = new SelectAreaDialogEventHandler() {
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@Override
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public void onResponse(SelectAreaDialogEvent event) {
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GWT.log("SelectAreaDialog Response: "+event);
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SelectAreaDialogEventType closedType = event.getSelectAreaDialogEventType();
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wktArea = null;
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if(closedType.equals(SelectAreaDialogEventType.Completed)){
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wktArea = event.getArea();
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onResponseCommand.execute();
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}
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}
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};
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addSelectAreaDialogEventHandler(handler);
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this.getElement().addClassName("GeoJson-DialogBox");
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setZIndex(10000);
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}
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/**
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* Fire command on response.
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*
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* @param command the command
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*/
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public void fireCommandOnResponse(Command command){
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this.onResponseCommand = command;
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}
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/**
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* Convert wkt to geo json.
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*
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* @param wktData the wkt data
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* @return the string
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*/
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private static native String convertWKTToGeoJSON(String wktData) /*-{
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var ol = $wnd.ol;
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var geojson_options = {};
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var wkt_format = new ol.format.WKT();
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var testFeature = wkt_format.readFeature(wktData);
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var wkt_options = {};
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var geojson_format = new ol.format.GeoJSON(wkt_options);
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var out = geojson_format.writeFeature(testFeature);
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//window.getELementById("my-id").innerhtml(out);
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//alert(out);
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//console.log(out)
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return out;
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}-*/;
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/**
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* Wkt to geo json.
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*
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* @param wktTxt the wkt txt
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* @return the string
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*/
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public String wktToGeoJSON(String wktTxt){
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String geoJSON = convertWKTToGeoJSON(wktTxt);
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//Window.alert("geoJSON: "+geoJSON);
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GWT.log("geoJSON: "+geoJSON);
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JavaScriptObject toJSON = JsonUtils.safeEval(geoJSON);
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JSONObject objJson = new JSONObject(toJSON);
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return objJson.get("geometry").toString();
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}
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/**
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* Gets the WKT to geo json.
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*
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* @return the WKT to geo json
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*/
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public String getWKTToGeoJSON(){
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return wktToGeoJSON(wktArea);
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}
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/**
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* Gets the wkt area.
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*
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* @return the wktArea
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*/
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public String getWktArea() {
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return wktArea;
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}
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}
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