Application: gvSIG desktop » gvSIG raster

import java.nio.ByteBuffer;

import java.nio.channels.FileChannel;

import org.gvsig.raster.wmts.ogc.struct.WMTSLayer;

import org.gvsig.raster.wmts.ogc.struct.WMTSStyle;

     * @return string that represents the url for getting the wms legend

     * If the layer has the object layer-->style-->legendurl that url will be returned 

     * otherwise builds the getLegendGraphic according to the OGC WMS Specifications

     * 

     */

    /*private String buildGetLegendGraphicRequest(WMTSLayer layer, WMTSStyle style) {

    	String onlineResource = style.getLegendURL().getHref();

		String symbol = getSymbol(onlineResource);

		String layerName = layer.getTitle();

		if(onlineResource == null || onlineResource.equals(""))

			return null;

		StringBuffer req = new StringBuffer();

		req.append(onlineResource + symbol + "REQUEST=GetLegendGraphic&SERVICE=WMS&VERSION=").append(getVersion());

        req.append("&LAYER=" + layerName).append("&TRANSPARENT=TRUE").append("&FORMAT=image/png");

        String aux = req.toString().replaceAll(" ", "%20");

        System.out.println("GetLegendGraphic url:" + aux);

		return aux;

    }*/

	public File getLegendGraphic(WMTSLayer layer, WMTSStyle style, ICancellable cancel) 

			throws ServerErrorException, WMTSException, DownloadException {

		URL request = null;

		try {

			String requestStr = style.getLegendURL().getHref();

			if(requestStr == null || requestStr.equals(""))

				return null;

			request = new URL(requestStr);

			System.out.println(requestStr);

			File f = downloadFile(request, cancel);

			if (f== null)

				return null;

			if (Utilities.isTextFile(f)) {

				FileInputStream fis = new FileInputStream(f);

				FileChannel fc = fis.getChannel();

				byte[] data = new byte[(int)fc.size()];

				ByteBuffer bb = ByteBuffer.wrap(data);

				fc.read(bb);

				WMTSException wmsEx = null;

				String exceptionMessage = parseException(data);

				if (exceptionMessage == null) {

					String error = new String(data);

					int pos = error.indexOf("<?xml");

					if (pos!= -1) {

						String xml = error.substring(pos,error.length());

						exceptionMessage = parseException(xml.getBytes());

					}

					if (exceptionMessage == null)

						exceptionMessage = new String(data);

				}

				wmsEx = new WMTSException(exceptionMessage);

				wmsEx.setWMTSMessage(new String(data));

				Utilities.removeURL(request);

				fis.close();

				throw wmsEx;

			}

			return f;

		} catch(IOException e) {

			e.printStackTrace();

			throw new ServerErrorException();

		}

	}

	/**

	 * <p>It will send a GetFeatureInfo request to the WMTS