Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.editing;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.project.documents.view.gui.DefaultViewPanel;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontext.layers.FLayers;

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.tools.undo.UndoException;

/**

 * Extensi?n encargada de gestionar el deshacer los comandos anteriormente

 * aplicados.

 *

 * @author Vicente Caballero Navarro

 */

public class UndoViewExtension extends Extension {

        /**

         * @see org.gvsig.andami.plugins.IExtension#initialize()

         */

        public void initialize() {

        }

        /**

         * @see org.gvsig.andami.plugins.IExtension#execute(java.lang.String)

         */

        public void execute(String s) {

                DefaultViewPanel vista = (DefaultViewPanel) PluginServices.getMDIManager().getActiveWindow();

                if (s.compareTo("edit-undo-layer") == 0) {

                        undo(vista);

                }

        }

        private void undo(DefaultViewPanel vista) {

                MapControl mapControl = vista.getMapControl();

                try {

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

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

                                if (layers.getLayer(i) instanceof FLyrVect && layers.getLayer(i).isEditing() && layers.getLayer(i).isActive()){

                                        ((FLyrVect)layers.getLayer(i)).getFeatureStore().undo();

                                        mapControl.drawMap(false);

                                        ApplicationLocator.getManager().refreshMenusAndToolBars();

                                }

                        }

                } catch (UndoException e) {

                        NotificationManager.addError(e.getMessage(),e);

                }

        }

        /**

         * @see org.gvsig.andami.plugins.IExtension#isEnabled()

         */

        public boolean isEnabled() {

                DefaultViewPanel vista = (DefaultViewPanel) PluginServices.getMDIManager().getActiveWindow();

                MapControl mapControl = vista.getMapControl();

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

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

//                        try {

                                if (layers.getLayer(i) instanceof FLyrVect && ((FLyrVect)layers.getLayer(i)).getFeatureStore().isEditing() && layers.getLayer(i).isActive()){

                                        return ((FLyrVect)layers.getLayer(i)).getFeatureStore().canUndo();

//                                VectorialEditableAdapter vea=(VectorialEditableAdapter)((FLyrVect)layers.getLayer(i)).getSource();

//                                if (vea==null)return false;

//                                return vea.getCommandRecord().moreUndoCommands();

                                }

//                        } catch (ReadException e) {

//                                // TODO Auto-generated catch block

//                                e.printStackTrace();

//                        } catch (DataException e) {

//                                // TODO Auto-generated catch block

//                                e.printStackTrace();

//                        }

                }

                return false;

        }

        /**

         * @see org.gvsig.andami.plugins.IExtension#isVisible()

         */

        public boolean isVisible() {

                org.gvsig.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager()

                                                                                                                         .getActiveWindow();

                if (f == null) {

                        return false;

                }

                if (f instanceof DefaultViewPanel) {

                        MapControl mapControl = ((DefaultViewPanel)f).getMapControl();

                        FLayer[] layers=mapControl.getMapContext().getLayers().getActives();

                        FLayer layer;

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

                                layer = layers[i];

                                if (!layer.isAvailable()){

                                        continue;

                                }

//                                try {

                                        if (layer instanceof FLyrVect && ((FLyrVect)layer).getFeatureStore().isEditing()){

                                                return true;

                                        }

//                                } catch (ReadException e) {

//                                        // TODO Auto-generated catch block

//                                        e.printStackTrace();

//                                }

                        }

                }

                return false;

        }

}