Application: gvSIG desktop

/* 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

 */

package com.iver.cit.gvsig.fmap.operations.selection;

import com.hardcode.gdbms.engine.data.driver.DriverException;

import com.hardcode.gdbms.engine.values.Value;

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

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

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

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

import java.util.HashMap;

/**

 * Listener que est? pendiente de la selecci?n que se haga sobre la tabla para

 * poder seleccionar de la tabla linkada los registros oportunos.

 *

 * @author Vicente Caballero Navarro

 */

public class LinkSelectionListener implements SelectionListener {

        private SelectableDataSource modelo1;

        private SelectableDataSource modelo2;

        private int index1;

        private int index2;

        /**

         * Crea un nuevo LinkSelectionListener. Donde se pasan como par?metros dos

         * SelectableDataSource, el primero de ellos(model1), representa la tabla

         * sobre la que al seleccionar alg?n registro buscaremos en el modelo2

         * para ver el valor del campo s1 y compararlo con el valor del campo s2 y

         * de esta forma seleccionar instantanemente los registros oportunos en la

         * tabla al que se representa con el modelo2.

         *

         * @param model1 SelectableDataSource de la tabla sobre la que se efectua

         *                   el link.

         * @param model2 SelectableDataSource de la tabla linkada.

         * @param s1 nombre del campo de la tabla donde se efectua el link.

         * @param s2 nombre del campo de la tabla linkada.

         */

        public LinkSelectionListener(SelectableDataSource model1,

                SelectableDataSource model2, String s1, String s2) {

                modelo1 = model1;

                modelo2 = model2;

                try {

                        index1 = modelo1.getFieldIndexByName(s1);

                        index2 = modelo2.getFieldIndexByName(s2);

                } catch (DriverException e) {

                        e.printStackTrace();

                }

                //field1 = s1;

                //field2 = s2;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.LegendListener#selectionChanged(com.iver.cit.gvsig.fmap.layers.LayerEvent)

         */

        public void selectionChanged(SelectionEvent e) {

                FBitSet bs1 = modelo1.getSelection();

                FBitSet bs2 = new FBitSet(); //(FBitSet)modelo2.getSelection().clone();

                HashMap idx = new HashMap((int) bs1.cardinality());

                //int index1 = -1;

                //int index2 = -1;

                try {

                        //                Construimos el ?ndice

                        for (int i = bs1.nextSetBit(0); i >= 0;

                                        i = bs1.nextSetBit(i + 1)) {

                                Value v = modelo1.getFieldValue((long) i, index1);

                                if (idx.get(v) == null) {

                                        idx.put(v, new Integer(i));

                                }

                        }

                } catch (DriverException e2) {

                        e2.printStackTrace();

                }

                try {

                        for (int i = 0; i < modelo2.getRowCount(); i++) {

                                Value v = modelo2.getFieldValue(i, index2);

                                Integer pi = (Integer) idx.get(v);

                                if (pi != null) {

                                        bs2.set(i);

                                }

                        }

                } catch (DriverException e1) {

                        e1.printStackTrace();

                }

                // this applies the selection to the linked table

                if (modelo1!=modelo2)

                        modelo2.setSelection(bs2);

                //modelo2.fireSelectionEvents();

        }

}