com.moesol.gwt.maps.client.tms.LocalTileMapServiceAsync.java Source code

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Here is the source code for com.moesol.gwt.maps.client.tms.LocalTileMapServiceAsync.java

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/**
 * (c) Copyright, Moebius Solutions, Inc., 2012
 *
 *                        All Rights Reserved
 *
 * LICENSE: GPLv3
 */
package com.moesol.gwt.maps.client.tms;

import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.xml.client.Document;
import com.google.gwt.xml.client.XMLParser;
import com.moesol.gwt.maps.shared.tms.TileMapMetadata;
import com.moesol.gwt.maps.shared.tms.TileMapServiceAsync;
import com.moesol.gwt.maps.shared.tms.TileMapServiceMetadata;

/**
 * Retrieves TMS metadata from a same-domain source
 */
public class LocalTileMapServiceAsync implements TileMapServiceAsync {

    @Override
    public void getMapMetadata(final String serviceUrl, final String mapId,
            final AsyncCallback<TileMapMetadata> callback) {

    }

    @Override
    public void getServiceMetadata(final String serviceUrl, final AsyncCallback<TileMapServiceMetadata> callback) {
        final RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.GET, serviceUrl);
        requestBuilder.setHeader("Accept", "text/xml");
        try {
            requestBuilder.sendRequest(null, new com.google.gwt.http.client.RequestCallback() {
                @Override
                public void onError(final Request request, final Throwable exception) {
                    // TODO: do something more useful here
                    Window.alert("error in TileMapServiceMetadata.getMetadata");
                }

                @Override
                public void onResponseReceived(final Request request,
                        final com.google.gwt.http.client.Response response) {
                    Document doc = XMLParser.parse(response.getText());
                    callback.onSuccess(
                            TileMapServiceMetadata.parse(new ClientElementFacade(doc.getDocumentElement())));
                }
            });
        } catch (final RequestException e) {
            callback.onFailure(e);
        }
    }

}