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: BufferGeoprocessController.java 5627 2006-06-02 18:20:58Z azabala $

* $Log$

* Revision 1.3  2006-06-02 18:20:04  azabala

* cuando el buffer es con dissolve se crea indice espacial para optimizar

*

* Revision 1.2  2006/05/25 08:21:48  jmvivo

* A?adida peticion de confirmacion para sobreescribir el fichero de salida, si este ya existiera

*

* Revision 1.1  2006/05/24 21:15:07  azabala

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

*

* Revision 1.3  2006/05/08 15:34:59  azabala

* refactoring of ITask api

*

* Revision 1.2  2006/05/01 19:20:14  azabala

* revisi?n general del buffer (a?adidos anillos concentricos, buffers interiores y exteriores, etc)

*

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

* primera version en cvs

*

*

*/

package com.iver.cit.gvsig.geoprocess.buffer;

import java.io.File;

import java.util.HashMap;

import com.iver.andami.PluginServices;

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

import com.iver.cit.gvsig.fmap.edition.ShpSchemaManager;

import com.iver.cit.gvsig.fmap.edition.writers.shp.ShpWriter;

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

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

import com.iver.cit.gvsig.geoprocess.buffer.fmap.BufferGeoprocess;

import com.iver.cit.gvsig.geoprocess.buffer.fmap.BufferVisitor;

import com.iver.cit.gvsig.geoprocess.buffer.gui.GeoProcessingBufferPanel;

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

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

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

import com.iver.cit.gvsig.geoprocess.core.gui.AddResultLayerTask;

import com.iver.cit.gvsig.geoprocess.core.gui.IGeoprocessPanel;

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

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

/**

 * Controller class for a Buffer Geoprocess

 * @author azabala

 *

 */

public class BufferGeoprocessController extends 

                                        AbstractGeoprocessController {

        /**

         * GUI class to read user entries.

         * TODO Put an interface, so this geoprocesscontroller

         * could be reused for command line environments, without

         * GUI

         */

        private GeoProcessingBufferPanel bufferPanel;

        /**

         * Geoprocess we are going to launch with

         * launchGeoprocess() method

         */

        private BufferGeoprocess buffer;

        /**

         * Default constructor

         *

         */

        public BufferGeoprocessController(){}

        /**

         * Sets GUI panel to read user entries

         */

        public void setView(IGeoprocessPanel viewPanel) {

                this.bufferPanel = (GeoProcessingBufferPanel) viewPanel;

        }

        public IGeoprocess getGeoprocess() {

                return buffer;

        }

        public boolean launchGeoprocess() {

                FLyrVect inputLayer = bufferPanel.getInputLayer();

                FLayers layers = bufferPanel.getFLayers();

                File outputFile = bufferPanel.getOutputFile();

                if (outputFile == null || (outputFile.getAbsolutePath().length() == 0)) {

                        String error = PluginServices.getText(this, "Error_entrada_datos");

                        String errorDescription = PluginServices.getText(this, "Error_seleccionar_resultado");

                        bufferPanel.error(errorDescription, error);

                        return false;

                }

                if (outputFile.exists()) {

                        if (!bufferPanel.askForOverwriteOutputFile(outputFile)) {

                                return false;

                        }

                }

                buffer = new BufferGeoprocess(inputLayer);

                HashMap params = new HashMap();

                boolean onlySelected = bufferPanel.isBufferOnlySelected();

                params.put("layer_selection", new Boolean(onlySelected));

                boolean dissolveBuffer = bufferPanel

                                .isDissolveBuffersSelected();

                params.put("dissolve_buffers", new Boolean(dissolveBuffer));

                byte strategy = 0;

                if (bufferPanel.isConstantDistanceSelected()) {

                        strategy = BufferGeoprocess.CONSTANT_DISTANCE_STRATEGY;

                        double bufferDistance = -1;

                        try {

                                bufferDistance = bufferPanel.getConstantDistance();

                        } catch (GeoprocessException e) {

                                String error = PluginServices.getText(this, "Error_entrada_datos");

                                String errorDescription = PluginServices.getText(this, "Error_distancia_buffer");

                                bufferPanel.error(errorDescription, error);

                                return false;

                        }

                        params.put("buffer_distance", new Double(bufferDistance));

                } else if (bufferPanel.isAttributeDistanceSelected()) {

                        strategy = BufferGeoprocess.ATTRIBUTE_DISTANCE_STRATEGY;

                        String attributeName = null;

                        try {

                                attributeName = bufferPanel

                                                .getAttributeDistanceField();

                        } catch (GeoprocessException e) {

                                String error = PluginServices.getText(this, "Error_entrada_datos");

                                String errorDescription = PluginServices.getText(this, "Error_atributo_no_numerico");

                                bufferPanel.error(errorDescription, error);

                                return false;

                        }

                        params.put("attr_name", attributeName);

                }

                params.put("strategy_flag", new Byte(strategy));

                //number of radial buffers

                int numberOfRadials = bufferPanel.getNumberOfRadialBuffers();

                params.put("numRings", new Integer(numberOfRadials));

                //type of polygon buffer

                String typePolygonBuffer = bufferPanel.getTypePolygonBuffer();

                byte typePolBuffer = BufferVisitor.BUFFER_OUTSIDE_POLY;

                if(typePolygonBuffer.equals(bufferPanel.BUFFER_INSIDE)){

                        typePolBuffer = BufferVisitor.BUFFER_INSIDE_POLY;

                }else if(typePolygonBuffer.equals(bufferPanel.BUFFER_INSIDE_OUTSIDE)){

                        typePolBuffer = BufferVisitor.BUFFER_INSIDE_OUTSIDE_POLY;

                }

                params.put("typePolBuffer", new Byte(typePolBuffer));

                //round cap or square cap

                byte cap = BufferVisitor.CAP_ROUND;

                boolean squareCap = bufferPanel.isSquareCap();

                if(squareCap)

                        cap = BufferVisitor.CAP_SQUARE;

                params.put("cap", new Byte(cap));

                try {

                        buffer.setParameters(params);

                } catch (GeoprocessException e2) {

                        String error = PluginServices.getText(this, "Error_ejecucion");

                        String errorDescription = PluginServices.getText(this, "Error_fallo_geoproceso");

                        bufferPanel.error(errorDescription, error);

                        return false;

                }

                SHPLayerDefinition definition = (SHPLayerDefinition) buffer

                                .createLayerDefinition();

                definition.setFile(outputFile);

                ShpSchemaManager schemaManager = new ShpSchemaManager();

                ShpWriter writer = null;

                try {

                        writer = getShpWriter(definition);

                } catch (Exception e1) {

                        String error = PluginServices.getText(this, "Error_escritura_resultados");

                        String errorDescription = PluginServices.getText(this, "Error_preparar_escritura_resultados");

                        bufferPanel.error(errorDescription, error);

                        return false;

                } 

                buffer.setResultLayerProperties(writer, schemaManager);

                try {

                        buffer.checkPreconditions();

                        IMonitorableTask task1 = buffer.createTask();

                        AddResultLayerTask task2 = new AddResultLayerTask(buffer);

                        task2.setLayers(layers);

                        MonitorableDecoratorMainFirst globalTask = new MonitorableDecoratorMainFirst(task1,

                                        task2);

                        if (globalTask.preprocess())

                                PluginServices.cancelableBackgroundExecution(globalTask);

                        return true;

                } catch (GeoprocessException e) {

                        String error = PluginServices.getText(this, "Error_ejecucion");

                        String errorDescription = PluginServices.getText(this, "Error_fallo_geoproceso");

                        bufferPanel.error(errorDescription, error);

                        return false;

                }

        }

}