Application: gvSIG desktop

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

 *

 * Copyright (C) 2007 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.

 */

package org.gvsig.gui.beans.panelGroup.loaders;

import java.io.Serializable;

import java.util.ArrayList;

import java.util.Map;

import org.gvsig.gui.beans.Messages;

import org.gvsig.gui.beans.panelGroup.exceptions.ListCouldntLoadPanelException;

import org.gvsig.gui.beans.panelGroup.exceptions.PanelBaseException;

import org.gvsig.gui.beans.panelGroup.panels.AbstractPanel;

import org.gvsig.gui.beans.panelGroup.panels.IPanel;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * <p>Panel loader version that doesn't load the panels, only stores and returns them.</p>

 * <p>This loader is useful to mask the load of panels and eliminate the dependence to the extension

 *  points, and, consequently, the dependence between the <i>libUIComponents</i> project to other

 *  projects.</p>

 * <p>This loader is used together with {@link PanelGroupLoaderUtilities PanelGroupLoaderUtilities} (allocated

 * in other project), that is which really loads the panels. First use <code>PanelGroupLoaderUtilities</code>

 * and after <code>PanelGroupLoaderFromList</code>.</p>

 *

 * @see IPanelGroupLoader

 *

 * @version 15/10/2007

 * @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es)

 */

public class PanelGroupLoaderFromList implements IPanelGroupLoader, Serializable {

        private static final long serialVersionUID = 3066607004928429045L;

        final static private Logger logger = LoggerFactory.getLogger(PanelGroupLoaderFromList.class);

        /**

         * Array with the panels loaded.

         *

         * @see #loadPanels()

         */

        private Class<IPanel>[] list;

        /**

         * <p>Initializes this loader with the panels.</p>

         *

         * @param list array with the panels that this loader supposedly load

         */

        public PanelGroupLoaderFromList(Class<IPanel>[] list) {

                this.list = list;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gui.beans.panelGroup.loaders.IPanelGroupLoader#loadPanels(java.util.ArrayList)

         */

        public void loadPanels(ArrayList<IPanel> panels) throws ListCouldntLoadPanelException {

                if (list == null) {

                        return;

                }

                ListCouldntLoadPanelException lCLPException = null;

                AbstractPanel panel = null;

                for (int i = 0; i< list.length; i++) {

                        if (list[i] != null) {

                                try {

                                        panel = null;

                                        panel = (AbstractPanel) list[i].newInstance();

                                        panels.add(panel);

                                } catch (Exception e) {

                                        logger.debug(Messages.getText("panel_loading_exception"), e);

                                        if ( lCLPException == null ) {

                                                lCLPException = new ListCouldntLoadPanelFromListException();

                                        }

                                        PanelBaseException bew = null;

                                        if (panel == null) {

                                                bew = new PanelBaseException(e, "");

                                        } else {

                                                bew = new PanelBaseException(e, panel.getLabel());

                                        }

                                        lCLPException.add(bew);

                                }

                        }

                }

                if ( lCLPException != null ) {

                        throw lCLPException;

                }

        }

        /**

         * <p>Exception produced when fails the load of a panel by a loader of type <code>PanelGroupLoaderFromList</code>.</p>

         *

         * @version 27/11/2007

         * @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es)

         */

        public class ListCouldntLoadPanelFromListException extends ListCouldntLoadPanelException {

                private static final long serialVersionUID = -8607556361881436022L;

                private static final String formatString = "Couldn't load some panels from a list of classes:";

                private static final String messageKey = "couldnt_load_panels_from_list_exception";

                /**

                 * <p>Creates an initializes a new instance of <code>ListCouldntLoadPanelFromListException</code>.</p>

                 */

                public ListCouldntLoadPanelFromListException() {

                        super();

                }

                protected Map<String, String> values() {

                        return null;

                }

        }

}