Application: gvSIG desktop

/*

 * Created on 10-abr-2006

 *

 * gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

*

* $Id: AddResultLayerTask.java 5796 2006-06-12 19:16:17Z azabala $

* $Log$

* Revision 1.3  2006-06-12 19:16:17  azabala

* a?adida comprobaci?n de que la capa resultado tiene elementos antes de a?adirla

*

* Revision 1.2  2006/06/08 18:22:31  azabala

* Se a?ade chequeo de capas vac?as antes de a?adir result al TOC

*

* Revision 1.1  2006/05/24 21:13:09  azabala

* primera version en cvs despues de refactoring orientado a crear un framework extensible de geoprocessing

*

* Revision 1.1  2006/04/11 17:55:51  azabala

* primera version en cvs

*

*

*/

package com.iver.cit.gvsig.geoprocess.core.gui;

import javax.swing.JComponent;

import javax.swing.JOptionPane;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.fmap.drivers.DriverIOException;

import com.iver.cit.gvsig.fmap.layers.CancelationException;

import com.iver.cit.gvsig.fmap.layers.FLayer;

import com.iver.cit.gvsig.fmap.layers.FLayers;

import com.iver.cit.gvsig.fmap.layers.FLyrVect;

import com.iver.cit.gvsig.geoprocess.core.fmap.GeoprocessException;

import com.iver.cit.gvsig.geoprocess.core.fmap.IGeoprocess;

import com.iver.utiles.swing.threads.IMonitorableTask;

/**

 * Implementation of IMonitorableTask that add result layer

 * of a geoprocess to the TOC in a background thread

 * @author azabala

 *

 */

public class AddResultLayerTask implements IMonitorableTask {

        /**

         * Layers of a view's TOC.

         */

        FLayers layers;

        /**

         * These are fictitial steps of adding layer to TOC task,

         * to get satisfactory visual results.

         */

        int initialStep = 1;

        int currentStep = 5;

        int lastStep = 10;

        /**

         * Finalization flag of the task

         */

        boolean finished = false;

        /**

         * Geoprocess whose result layer we want to add to TOC

         */

        IGeoprocess geoprocess;

        /**

         * Constructor

         * @param geoprocess

         */

        public AddResultLayerTask(IGeoprocess geoprocess) {

                this.geoprocess = geoprocess;

        }

        /**

         * Sets FLayers instance, to add new layer to it

         * @param layers

         */

        public void setLayers(FLayers layers){

                this.layers = layers;

        }

        public int getInitialStep() {

                return initialStep;

        }

        public int getFinishStep() {

                return lastStep;

        }

        public int getCurrentStep() {

                if (!finished)

                        return 5;

                else

                        return lastStep;

        }

        public String getStatusMessage() {

                return "Loading layer...";

        }

        public String getNote() {

                return "";

        }

        public boolean isDefined() {

                return true;

        }

        public void cancel() {

                finished = true;

        }

        private boolean checkToAdd(FLayer layer) throws GeoprocessException{

                try {

                        if(layer instanceof FLyrVect){

                                FLyrVect result = (FLyrVect) layer;

                                if(result.getSource().getShapeCount() > 0){

                                        return true;

                                }else

                                        return false;

                        }else if (layer instanceof FLayers){

                                FLayers result = (FLayers) layer;

                                int numLayers = result.getLayersCount();

                                if( numLayers == 0)

                                        return false;

                                for(int i = 0; i < numLayers; i++){

                                        FLayer lyrI = result.getLayer(i);

                                        if(lyrI instanceof FLyrVect){

                                                if(((FLyrVect)lyrI).getSource().getShapeCount() != 0)

                                                        return true;

                                        }//if

                                }//for

                                return false;

                        }else//TODO Verificar esto si queremos meter en geoprocessing capas raster

                                return false;

                } catch (DriverIOException e) {

                        throw new GeoprocessException("Error al chequear la capa resultado antes de pasarla al TOC");

                }

        }

        public void run() throws GeoprocessException {

                try {

                        FLayer result = geoprocess.getResult();

                        if(checkToAdd(result))

                                layers.addLayer(result);

                        else{

                                JOptionPane.showMessageDialog(

                                                (JComponent) PluginServices.

                                                        getMDIManager().

                                                        getActiveView(), 

                                                PluginServices.

                                                        getText(this, "Error_capa_vacia"), 

                                                        "Error",

                                                JOptionPane.ERROR_MESSAGE);

                        }

                } catch (CancelationException e) {

                        throw new GeoprocessException(

                                        "Error al a?adir el resultado de un geoproceso a flayers");

                } finally {

                        finished = true;

                }

        }

        public boolean isCanceled() {

                return false;

        }

        public boolean isFinished() {

                return finished;

        }

}