| gvSIG desktop 1

package com.iver.cit.gvsig.gui.panels;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.iver.andami.PluginServices;

import com.iver.andami.messages.NotificationManager;

import com.iver.andami.ui.mdiManager.IWindow;

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

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

import com.iver.cit.gvsig.gui.filter.DefaultExpressionDataSource;

import com.iver.cit.gvsig.project.documents.table.gui.Table;

import com.iver.cit.gvsig.project.documents.view.IProjectView;

import com.iver.cit.gvsig.project.documents.view.gui.BaseView;

/* 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

 */

/**

 * This class has specific code for "WFSFilterPanel" extracted from "FiltroExension" that should be used by "WFSFilterPanel" but that has a conflict in the "DriverException" class

 * (because there are 2 classes with the same name "DriverException" but with different code: one in "libFMap" and another in "libGDBMS").

 *

 * @author Pablo Piqueras Bartolom? (p_queras@hotmail.com)

 */

public class DataLoadingFromActiveView {

        /**

         * Gets the default expression data source of the active window (view or table).

         * 

         * @return data of the active view or <code>null</code>

         */

        public static DefaultExpressionDataSource getDefaultExpressionDataSource() {

                DefaultExpressionDataSource ds = null;

                IWindow window = PluginServices.getMDIManager().getActiveWindow();

                try {

                        if ((window == null) || (!(window instanceof BaseView))) {

                                return null;

                        }

                        else {

                                // Tries to access to the ActivedWindow and get the data from its selected layer

                                SelectableDataSource dataSource = null;

                                if (window instanceof Table) {

                                        Table vista = (Table) window;

                                        dataSource = (SelectableDataSource)vista.getModel().getModelo().getRecordset();

                                } else if (window instanceof BaseView) {

                                        IProjectView pv = ((BaseView) window).getModel();

                                        FLayer layer = pv.getMapContext().getLayers().getActives()[0];

                                        if (layer == null)

                                                return null;

                                        dataSource = pv.getProject().getDataSourceByLayer(layer);

                                }

                                // Load values for return them

                                ds = new DefaultExpressionDataSource();

                                ds.setTable(dataSource);

                        }

                } catch (ReadDriverException de) {

                        NotificationManager.addError(PluginServices.getText(null, "error_filtering"), de);

                        return null;

                }

                return ds;

        }

}