| gvSIG desktop 1

package org.gvsig.remoteClientOld;

import java.awt.Image;

import java.awt.image.BufferedImage;

import java.io.ByteArrayInputStream;

import java.io.IOException;

import java.net.URL;

import java.util.ArrayList;

import javax.imageio.ImageIO;

import org.gvsig.remoteClientOld.descriptor.Capabilities;

import org.gvsig.remoteClientOld.exception.ServerOutOfOrderException;

import org.gvsig.remoteClientOld.exception.UnsupportedVersionException;

import org.gvsig.remoteClientOld.exception.WMSException;

import org.gvsig.remoteClientOld.request.GetCapabilitiesRequest;

import org.gvsig.remoteClientOld.request.GetFeatureInfoRequest;

import org.gvsig.remoteClientOld.request.GetMapRequest;

import org.gvsig.remoteClientOld.utils.LogManager;

import org.gvsig.remoteClientOld.utils.Logger;

import org.gvsig.remoteClientOld.wms.WMSAdapter;

import org.gvsig.remoteClientOld.wms.WMSAdapterFactory;

import com.iver.cit.gvsig.fmap.DriverException;

public class MapClient extends RemoteClient implements IMapClient 

{

        protected MapAdapter adapter;

        protected Logger m_log;

        private Capabilities theCapabilities;

        public MapClient()

        {

                m_log = LogManager.getLogManager().getLogger(getClass().getName());        

        }

        public String getName()

        {

                return "WMSClient"; 

        }

        /**

         * Sets the server that we want to connect to.

         * Establece el servidor al que se quiere conectar.

         * @param host

         */

        public void setHost(String host)

        {

                try

                {

                        if (adapter == null)

                        {

                                adapter = WMSAdapterFactory.getDriver(new URL(host));

                        }

                        adapter.setHost(host);

                        adapter.setServiceName("WMS");

                }

                catch(Exception e)

                {

                        m_log.error("WMSClient.setHost(). " + e);

                }

        }

        /**

         * Sends the GetCapabilities operation to the server.

         * Env?a la operaci?n GetCapabilities al servidor.

         * @throws ServerOutOfOrderException 

         */

        public Capabilities getCapabilities() 

                throws ServerOutOfOrderException, IOException, UnsupportedVersionException 

        {                

                theCapabilities = adapter.getCapabilities();

                return theCapabilities;

        }

        public Image getMap(GetMapRequest request) 

        throws IOException, NoSuchFieldException, WMSException 

        {        

                BufferedImage image = new BufferedImage(request.getWidth(),

                                request.getHeight(), BufferedImage.TYPE_INT_ARGB);

                try {

                        byte[] res = adapter.getMap(request);

                        ByteArrayInputStream inbytes = new ByteArrayInputStream(res);

                        image = ImageIO.read(inbytes);

                        return image;

                } catch (Exception e) {

                        return null;

                }

        }

        public void getFeatureInfo(GetFeatureInfoRequest request) 

        throws IOException, NoSuchFieldException, WMSException 

        {

                try

                {

                        adapter.getFeatureInfo(request);

                }

                catch(Exception e){}

        }

        /**

         * Returns the server's name. The string is extracted from the GetCapabilities

         * response.

         * Devuelve el nombre del servidor indicado por ?ste.

         * @return String

         */

        public String getServerName()

        {

                try

                {

                        if (theCapabilities == null)

                        {

                                theCapabilities = getCapabilities();

                        }

                        return theCapabilities.getServiceInformation().getName();                        

                }

                catch(Exception e)

                {

                        m_log.error("Error reading ServerName from Capabilities. " + e);

                        return "";

                }

        }

        /**

         * Returns a string containing the server's WMS version number.

         * Devuelve el n?mero de versi?n WMS del servidor

         * @return String

         */

        public String getVersion()

        {

                try

                {

                        if (theCapabilities == null)

                        {

                                theCapabilities = getCapabilities();

                        }

                        return theCapabilities.getServiceInformation().getVersion();                        

                }

                catch(Exception e)

                {

                        m_log.error("Error reading version from Capabilities. " + e);

                        return "";

                }        

        }

        /**

         * Returns name and description of the server. It is supposed to be used

         * as the source of the abstract field in your application's interface.

         * Devuelve nombre y descripci?n (abstract) del servidor.

         * @return String

         */

        public String getDescription()

        {

                try

                {

                        if (theCapabilities == null)

                        {

                                theCapabilities = getCapabilities();

                        }

                        String name= theCapabilities.getServiceInformation().getName();

                        String title = theCapabilities.getServiceInformation().getTitle();

                        String abstr = theCapabilities.getServiceInformation().getAbstract();

                        String description = name + "\n\n" + title + "\n" + abstr;

                        if ( description.trim().length() == 0) return "No description";

                        else return description;

                }

                catch(Exception e)

                {

                        m_log.error("Error reading description from Capabilities. " + e);

                        return "";

                }        

        }                

        /**

         * Returns a list containing the formats supported by the map

         * @return ArrayList

         */

        public ArrayList getMapFormats(){

                ArrayList formats = null;

                try

                {

                        if (theCapabilities == null)

                        {

                                theCapabilities = getCapabilities();

                        }                        

                        formats = theCapabilities.getServiceInformation().mapRequestInfo.formats;

                        //return null;//wms.getCapabilities().getFormats();

                }

                catch(Exception e){}

                return formats;

        }

        public String[] getLayerNames(){

                String[] names = null;                

                try

                {

                        if (theCapabilities == null)

                        {

                                theCapabilities = getCapabilities();

                        }                        

                        names = theCapabilities.getMapComposition().getLayerNames(); 

                }

                catch(Exception e){}

                return names;

        }

        /**

         * Returns the number of layers at the server.

         * Devuelve el numero de layers en el servidor

         * @return int

         */

        public int getNumOfLayers(){

                return getLayerNames().length;

        }

        /**

         * Returns an ArrayList containing a set of Strings with the layer's SRSs.

         *          

         * @param layer name

         * @return ArrayList

         */

        public ArrayList getSRSs(String layerName) 

        {        

                //TODO: get all the SRS from a Layer.

                return null;

        }        

        public void close()

        {}

        public void connect() throws IOException, DriverException 

        {

                try {

                        if ((adapter.getHost() != null) && (adapter.getHost().trim().length() > 0))

                        {

                                getCapabilities();                        

                                adapter.setConnected(true);

                        }

                        else

                        {

                                m_log.error("No host specified. Must specify a host to connect to");

                        }

                } catch (Exception e) {

                        throw new DriverException(e);

                }

        }

}