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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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 *
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 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
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 *
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 * For more information, contact:
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 *
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 *  Generalitat Valenciana
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 *   Conselleria d'Infraestructures i Transport
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 *   Av. Blasco Ib??ez, 50
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 *   46010 VALENCIA
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 *   SPAIN
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 *
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 *      +34 963862235
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 *   gvsig@gva.es
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 *      www.gvsig.gva.es
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 *
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 *    or
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 *
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 *   IVER T.I. S.A
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 *   Salamanca 50
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 *   46005 Valencia
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 *   Spain
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 *
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 *   +34 963163400
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 *   dac@iver.es
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 */
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package org.gvsig.editing;
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import org.gvsig.andami.PluginServices;
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import org.gvsig.andami.messages.NotificationManager;
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import org.gvsig.andami.plugins.Extension;
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import org.gvsig.app.project.documents.view.gui.DefaultViewPanel;
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import org.gvsig.fmap.mapcontext.layers.FLayer;
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import org.gvsig.fmap.mapcontext.layers.FLayers;
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import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;
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import org.gvsig.fmap.mapcontrol.MapControl;
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import org.gvsig.tools.undo.RedoException;
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/**
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 * Extensi?n encargada de gestionar el rehacer un comando anteriormente
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 * deshecho.
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 *
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 * @author Vicente Caballero Navarro
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 */
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public class RedoViewExtension extends Extension {
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        /**
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         * @see org.gvsig.andami.plugins.IExtension#initialize()
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         */
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        public void initialize() {
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        }
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        /**
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         * @see org.gvsig.andami.plugins.IExtension#execute(java.lang.String)
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         */
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        public void execute(String s) {
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                DefaultViewPanel vista = (DefaultViewPanel) PluginServices.getMDIManager().getActiveWindow();
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                MapControl mapControl = vista.getMapControl();
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                if (s.compareTo("edit-redo-layer") == 0) {
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                        try {
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                                        FLayers layers=mapControl.getMapContext().getLayers();
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                                        for (int i=0;i<layers.getLayersCount();i++){
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                                                if (layers.getLayer(i) instanceof FLyrVect && layers.getLayer(i).isEditing() && layers.getLayer(i).isActive()){
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                                                        ((FLyrVect)layers.getLayer(i)).getFeatureStore().redo();
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                                                        mapControl.drawMap(false);
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                                                }
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                                        }
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                        } catch (RedoException e) {
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                                NotificationManager.addError(e.getMessage(),e);
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                        }
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                }
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        }
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        /**
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         * @see org.gvsig.andami.plugins.IExtension#isEnabled()
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         */
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        public boolean isEnabled() {
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                DefaultViewPanel vista = (DefaultViewPanel) PluginServices.getMDIManager().getActiveWindow();
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                MapControl mapControl = vista.getMapControl();
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                FLayers layers=mapControl.getMapContext().getLayers();
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                for (int i=0;i<layers.getLayersCount();i++){
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//                        try {
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                                if (layers.getLayer(i) instanceof FLyrVect && ((FLyrVect)layers.getLayer(i)).getFeatureStore().isEditing() && layers.getLayer(i).isActive()){
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                                        return ((FLyrVect)layers.getLayer(i)).getFeatureStore().canRedo();
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                                }
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//                        } catch (ReadException e) {
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//                                // TODO Auto-generated catch block
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//                                e.printStackTrace();
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//                        } catch (DataException e) {
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//                                // TODO Auto-generated catch block
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//                                e.printStackTrace();
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//                        }
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                }
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                return false;
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        }
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        /**
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         * @see org.gvsig.andami.plugins.IExtension#isVisible()
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         */
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        public boolean isVisible() {
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                org.gvsig.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager()
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                                                                                                                         .getActiveWindow();
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                if (f == null) {
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                        return false;
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                }
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                if (f instanceof DefaultViewPanel) {
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                        MapControl mapControl = ((DefaultViewPanel)f).getMapControl();
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                        FLayer[] layers=mapControl.getMapContext().getLayers().getActives();
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                        FLayer layer;
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                        for (int i=0;i<layers.length;i++){
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                                layer = layers[i];
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                                if (!layer.isAvailable()){
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                                        continue;
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                                }
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//                                try {
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                                        if (layer instanceof FLyrVect && ((FLyrVect)layer).getFeatureStore().isEditing()){
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                                                return true;
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                                        }
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//                                } catch (ReadException e) {
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//                                        // TODO Auto-generated catch block
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//                                        e.printStackTrace();
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//                                }
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                        }
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                }
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                return false;
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        }
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}