| gvSIG desktop 1

     * <p>One of the three interfaces defined by the OGC WMS, it gets legend of a layer</p>

     * @return 

     */

    public File getLegendGraphic(String layerName, ICancellable cancel) throws WMSException, ServerErrorException{        

        return handler.getLegendGraphic(layerName, cancel);

    } 

    /**

    public File getLegendGraphic(String layerName, ICancellable cancel) throws ServerErrorException, WMSException

    {

    	URL request = null;

		try

		{

			request = new URL(buildGetLegendGraphicRequest(layerName));     

			System.out.println(request);

            File f = Utilities.downloadFile(request, "wmsGetLegendGraphic", 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);

	    		WMSException 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 WMSException(exceptionMessage);

            	wmsEx.setWMSMessage(new String(data));

            	Utilities.removeURL(request);

                throw wmsEx;

            }

			return f;	    	

		}

		catch(IOException e)

		{

			e.printStackTrace();

            throw new ServerErrorException();

		}

    } 

    private String buildGetLegendGraphicRequest(String layerName)

    { 

		StringBuffer req = new StringBuffer();

		String symbol = null;

		String onlineResource = null;

		onlineResource = getHost();

		symbol = getSymbol(onlineResource);

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

        req.append("LAYER=" + layerName)

        .append("&FORMAT=image/png");

		return req.toString().replaceAll(" ", "%20");

    }

    /**

     * Builds the GetMapRequest according to the OGC WMS Specifications

     */

					}		

					else if (parser.getName().compareTo(CapabilitiesTags.GETLEGENDGRAPHIC)==0)

					{

						serviceInfo.operations.put(CapabilitiesTags.GETLEGENDGRAPHIC, null);

					}