| gvSIG desktop 1

/* 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;

import org.gvsig.data.ReadException;

import org.gvsig.data.vectorial.FeatureStore;

import com.iver.andami.PluginServices;

import com.iver.andami.messages.NotificationManager;

import com.iver.andami.plugins.Extension;

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

/**

 * Extensi?n encargada de gestionar el rehacer un comando anteriormente

 * deshecho.

 *

 * @author Vicente Caballero Navarro

 */

public class UndoTableExtension extends Extension {

        /**

         * @see com.iver.andami.plugins.IExtension#initialize()

         */

        public void initialize() {

                registerIcons();

        }

        private void registerIcons(){

                PluginServices.getIconTheme().registerDefault(

                                "table-undo",

                                this.getClass().getClassLoader().getResource("images/Undo.png")

                        );

        }

        /**

         * @see com.iver.andami.plugins.IExtension#execute(java.lang.String)

         */

        public void execute(String s) {

                Table tabla = (Table) PluginServices.getMDIManager().getActiveWindow();

                if (s.compareTo("UNDO") == 0) {

                        if (tabla.isEditing()){

                                FeatureStore fs=tabla.getModel().getModelo();

                                fs.undo();

                                fs.getSelection().clear();

                        }

                        tabla.getModel().setModified(true);

                }

        }

        /**

         * @see com.iver.andami.plugins.IExtension#isEnabled()

         */

        public boolean isEnabled() {

                Table tabla = (Table) PluginServices.getMDIManager().getActiveWindow();

                //MapControl mapControl = (MapControl) vista.getMapControl();

                //FLayers layers=mapControl.getMapContext().getLayers();

                //for (int i=0;i<layers.getLayersCount();i++){

                        if (tabla.getModel().getModelo() instanceof FeatureStore && tabla.isEditing()){

                                FeatureStore fs = tabla.getModel().getModelo();

                                if (fs==null)return false;

                                return fs.getCommandsRecord().moreUndoCommands();

                        }

                //}

                return false;

        }

        /**

         * @see com.iver.andami.plugins.IExtension#isVisible()

         */

        public boolean isVisible() {

                com.iver.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager()

                                                                                                                         .getActiveWindow();

                if (f == null) {

                        return false;

                }

                if (f instanceof Table) {

                        return true;

                } else {

                        return false;

                }

        }

}